公司主营目前市场上最具竞争优势产品有：感光银浆，激光银浆，可拉伸导电银浆，自控温PTC碳浆,低温导电银浆，QTC压力传感油墨，医疗生物电极氯化银浆，透明导电油墨，导电碳浆，UV绝缘油等高端功能材料。
产品广泛适用于CTP触摸屏、医疗生物传感、汽车电子、智能穿戴电子等行业。
如有相关资材需求请联系：Guang Zhou City Silver Well trading Co.,ltd.
手机：86-13922125860，E-mail: laiqiangping2010@163.com
2016年9月20日星期二
Enfucell Printed Battery Powering Golf Sensor, Temperature Sensors and More
Guang Zhou City Silver Well trading Co.,ltd.是一家专业为高新技术企业：汽车电子，医疗电子、生物传感器，CTP触摸屏，智能家电，RFID等制造企业提供一站式技术及材料供应解决方案。我公司是多家美国、德国、日本、韩国知名品牌在中国区唯一代理商。客户一直享受最优质的产品和技术服务。我司与原厂建立广泛的研发及技术合作，可为客户专案订制材料研发。
Printable electronics is an innovative area of technology with great commercial potential
new in-mold electronic inks enable circuits to be printed directly onto plastic substrates, and allow touch controls, such as electronic buttons, switches and slides, to be readily integrated in applications such as home appliances and automobiles
USA Santa Clara, Calif. New materials include conductive inks for wearable and in-mold electronics, and materials that can be processed at very high or low temperatures, expanding the range of applications in the growing printed electronics field. DuPont experts also will share their views on the industry and enabling technologies in three key technical forums during the event. These initiatives are consistent with DuPont’s aim to continue expanding its product offering and leadership position in the printed electronics market.
New prototypes for wearable electronics, including a sensing headband, gaming gloves, shoe insole, and biometric shirt; all made using stretchable electronic ink materials. The inks provide a manufacturing-ready alternative to traditional methods of embedding electronics in clothing and are used to create thin, form-fitting circuits that can be seamlessly bonded with many standard fabrics. New inks for wearable electronics being introduced this year include sensor materials, conductor materials with improved stretch, and encapsulant with improved printability.
A new suite of in-mold electronic inks designed to help streamline electronic devices by reducing the need for rigid circuit boards. These inks enable circuits to be printed directly onto plastic substrates, and allow touch controls, such as electronic buttons, switches and slides, to be readily integrated in applications such as home appliances and automobiles. An in-mold electronics demonstration highlighting capacitive touch under high humidity will be on display in DuPont’s booth and on Demonstration Street, an area at Printed Electronics USA dedicated to showing working products using printed electronic technologies.
New low-temperature inks that cure quickly at temperatures as low as 60°C, opening up the possibility for printed electronics designers to use less expensive plastic films.
Guang Zhou City
Silver Well trading Co.,ltd.
手机：86-13922125860，QQ:598362644
E-mail: laiqiangping2015@gmail.com
2016年9月19日星期一
供应：PTCInk
PTC stands for Positive Temperature Co-efficient, an inherent characteristic of a selected material. It means that the electric resistance of the said material increases with the increase of the temperature as shown in Figure 1.
PTC films refers to such films with the desirable PTC characteristic and inks used to form these such films, are referred to as PTC Inks.
PTC films are generally used as heating elements which mainly provide infra-red radiation to the environment which are known as PTC heating films.
我司系一家供应进口功能材料及技术服务供应商，专业为汽车电子，充电电桩，医疗电子，智能家电等科技型制造企业提供一站式技术及材料供应解决方案， 我公司是多家美国、德国、日本、韩国知名品牌在中国区唯一代理商。客户一直享受最优质的产品和技术服务。我司与原厂建立广泛的研发及技术合作，可为客户专案订制材料研发。
公司主营目前市场上最具竞争优势产品有：激光镭射银浆，可拉伸导电银浆，可拉伸UV绝缘油，可拉伸氯化银浆，PTC温控碳浆，常温固化导电银浆，QTC压力传感油墨，医疗电极氯化银浆， AED除颤电极银浆，透明导电油墨，UV绝缘油，环氧罐封胶，马达胶水，快干胶水，三防漆等高端功能材料。
产品广泛适用于CTP触摸屏、医疗生物电极、可穿戴电子，汽车电子，充电电桩，智能电子等行业。
如有相关资材需求请联系：
Guang Zhou City
Silver Well trading Co.,ltd.
手机：86-13922125860，QQ:598362644
E-mail: laiqiangping2015@gmail.com
Distinguished from other regular heating elements whose electric resistances are relatively constant, a PTC heating film is capable of controlling the temperature itself, by regulating its heating power via its electric resistance response to temperature.
The science behind this self-regulation is based on the principal of the Ohm Law: [I = V/R, and P=I*V =V*V/R, where I is current, V is Voltage, R is Resistance, P is power).
At low temperatures, its resistance is lower, so its heating power is larger resulting in the temperature quickly increasing. While the temperature increases, its resistance rises as well and therefore decreasing its heating power at the same time.
During a short period and certain temperature, its heating power decreases to point where it simply balances the energy loss of the system, maintaining a constant.
In our proprietary PTC film, the PTC characteristics are scientifically achieved by controlling the distance between conducting domains (particles of carbon black mostly) through the designed thermal expansion of the polymeric binder employed in our PTC inks in nano-scale and in quantum fashion.
At a lower temperature (below Tg), the polymer chains are mainly frozen. Their thermal expansion is limited, so the carbon particles are closer to each other which offers high conductivity (low resistivity).
When the temperature increases, polymer chains start to move and stretch and when the temperature approaches its Tg, its expansion increases dramatically, so does the distance between carbon particles, thus as a result, the conductivity quickly decreases (resistivity quickly increases), so does its heating power.
The heating PTC film can be simply treated as an intelligent heating element, and its initial resistivity (R0) is expressed in ohm per square (Ω/◊).
Depending on the application, the effective electric resistance (W) of the final heating element can be achieved via outlaying these squares in a designed pattern.
As demonstrated in the figure, the overall heating power is function of N*V2/R0, so it can be easily manipulated by selecting any parameter of applied voltage, the overall number (N) of square in parallel, and the initial resistivity (R0).
Under optimization, the resistivity of our proprietary PTC film is designed to be around 10K (Ω/◊). In this case, each square regardless of its dimension can be viewed as a resistor of 10K, so the overall heating power can be expressed as P = N*V2/10000.
If a voltage of 110V is applied, then the overall heating power is simply expressed as P110 = 1.21N. That is to say, in a given area of any designed dimension, this PTC film would yield an initial heating power P110 = 1210 Watt if 1000 (N=1000) equivalent squares are patterned in parallel.
Of course, this heating power will automatically adjusted in response to temperature, the lower temperature, the higher the heating power. In theory, any heating power for a given area can be designed
PTC stands for Positive Temperature Co-efficient, an inherent characteristic of a selected material. It means that the electric resistance of the said material increases with the increase of the temperature as shown in Figure 1.
PTC films refers to such films with the desirable PTC characteristic and inks used to form these such films, are referred to as PTC Inks.
PTC films are generally used as heating elements which mainly provide infra-red radiation to the environment which are known as PTC heating films.
Distinguished from other regular heating elements whose electric resistances are relatively constant, a PTC heating film is capable of controlling the temperature itself, by regulating its heating power via its electric resistance response to temperature.
The science behind this self-regulation is based on the principal of the Ohm Law: [I = V/R, and P=I*V =V*V/R, where I is current, V is Voltage, R is Resistance, P is power).
At low temperatures, its resistance is lower, so its heating power is larger resulting in the temperature quickly increasing. While the temperature increases, its resistance rises as well and therefore decreasing its heating power at the same time.
During a short period and certain temperature, its heating power decreases to point where it simply balances the energy loss of the system, maintaining a constant.
In our proprietary PTC film, the PTC characteristics are scientifically achieved by controlling the distance between conducting domains (particles of carbon black mostly) through the designed thermal expansion of the polymeric binder employed in our PTC inks in nano-scale and in quantum fashion.
At a lower temperature (below Tg), the polymer chains are mainly frozen. Their thermal expansion is limited, so the carbon particles are closer to each other which offers high conductivity (low resistivity).
When the temperature increases, polymer chains start to move and stretch and when the temperature approaches its Tg, its expansion increases dramatically, so does the distance between carbon particles, thus as a result, the conductivity quickly decreases (resistivity quickly increases), so does its heating power.
Engineering and Design
The heating PTC film can be simply treated as an intelligent heating element, and its initial resistivity (R0) is expressed in ohm per square (Ω/◊).
Depending on the application, the effective electric resistance (W) of the final heating element can be achieved via outlaying these squares in a designed pattern.
As demonstrated in the figure, the overall heating power is function of N*V2/R0, so it can be easily manipulated by selecting any parameter of applied voltage, the overall number (N) of square in parallel, and the initial resistivity (R0).
Under optimization, the resistivity of our proprietary PTC film is designed to be around 10K (Ω/◊). In this case, each square regardless of its dimension can be viewed as a resistor of 10K, so the overall heating power can be expressed as P = N*V2/10000.
If a voltage of 110V is applied, then the overall heating power is simply expressed as P110 = 1.21N. That is to say, in a given area of any designed dimension, this PTC film would yield an initial heating power P110 = 1210 Watt if 1000 (N=1000) equivalent squares are patterned in parallel.
Of course, this heating power will automatically adjusted in response to temperature, the lower temperature, the higher the heating power. In theory, any heating power for a given area can be designed
Printable electronics is an innovative area of technology with great commercial potential.
Printable electronics is an innovative area of technology with great commercial potential.
Here, a screen-printed functional ink, comprising a combination of semiconducting acicular particles, electrically insulating nanoparticles and a base polymer ink, is described that exhibits pronounced pressure sensitive electrical properties for applications in sensing and touch sensitive surfaces.
The combination of these components in the as-printed ink yield a complex structure and a large and reproducible touch pressure sensitive resistance range. In contrast to the case for some composite systems, the resistance changes occur down to applied pressures of 13 Pa.
Current–voltage measurements at fixed pressures show monotonic non-linear behavior, which becomes more Ohmic at higher pressures and in all cases shows some hysteresis. The physical basis for conduction, particularly in the low pressure regime, can be described in terms of field assisted quantum mechanical tunneling.
Printable electronics is now an established area of technology with significant commercial potential in a wide range of application sectors that includes photovoltaics, super capacitors and RFID [1–3].
The development of technologies with electronic functionality that can be mass produced by printing processes has the potential to provide technical benefits, including lighter weight components, and can lead to significant cost benefits from the manufacturing process.
A wide range of materials and functionalities are currently under investigation for printable manufacture, from simple electrically conductive tracks [4], to flexible FETs [5]. An area of growing applications importance is touch sensitive components and surfaces for switching and position sensing.
In its simplest form, touch sensitivity requires some contact-sensitive switching capability. The addition of pressure sensitivity adds a third dimension to conventional two-dimensional touch surface interfaces, providing an additional input parameter based upon the applied force in addition to the surface location.
Functional force and location sensing touch pad technology based upon contact-resistance produced by printing has been demonstrated elsewhere [6, 7]. However, this approach involved additional patterning, through lithographic and printing methods, on top of a resistive layer or with the addition of features to create regular structures that were needed to create the pressure and location sensing capacity [6, 7].
An alternate approach is to develop an ink that is insulating when no pressure is applied, but has an intrinsic pressure sensitive electrical response, allowing direct printing of pressure sensitive components without the need for additional patterning and structures.
In bulk form, pressure sensitive electrically conducting switching composites have been a focus of research for over 50 years [8]. The first conductive composites were composed of metal or other conductive filler powders, such as nickel or carbon black, dispersed within insulating elastomers, such as rubber
Figure 1. (a) Schematic cross section of printed structure for the pressure sensitive test device (not to scale) and (b) photograph showing top view of a printed test device. The force probe is applied to the center of the printed disk.
The variation of conductivity behavior of such composites with filler loading has been described using percolation and effective medium theories, whereby the conductivity of the composite takes a value close to that of the bulk insulating matrix at low filler loading, and rises dramatically at the percolation threshold, a critical filler loading where direct electrical connections form between filler particles throughout the insulating matrix [11].
Such carbon black based conducting composites have been developed as inks for pressure sensing [12]. However, as the composite is loaded above the percolation threshold printed films have a finite start resistance and exhibit an inverse relationship between the starting resistance and pressure sensitivity of the resistive behavior.
Other research has shifted towards composites with filler particles of varying geometries and a wider range of insulating matrices [13–15]. For printing applications the challenge is to develop composite materials with appropriate pressure sensitive electrical behavior coupled with the structural requirements needed for preparation as inks that can be printed using conventional print technologies.
Such composite materials are not uncommon, having been a focus of research for use as conductive tracks and electrodes, chemical sensors and thin film transistors, and often comprise nanoscale conductive filler particles dispersed in a flowing polymer [16–20].
The choice of nanoscale filler particles has enabled the use of ink-jet printing for many of these composite materials; larger particles tend to clog the printer nozzles. This work presents a description of the functional behavior and physical structure of a new type of screen-printed (possible due to the choice of nanoscale filler particles) composite ink with electrical properties that are highly sensitive to applied force.
Investigation of the I–V behavior at constant pressure provides some insight into the physical mechanisms that may be responsible for the pressure sensitive electrical behavior.
Here, a screen-printed functional ink, comprising a combination of semiconducting acicular particles, electrically insulating nanoparticles and a base polymer ink, is described that exhibits pronounced pressure sensitive electrical properties for applications in sensing and touch sensitive surfaces.
The combination of these components in the as-printed ink yield a complex structure and a large and reproducible touch pressure sensitive resistance range. In contrast to the case for some composite systems, the resistance changes occur down to applied pressures of 13 Pa.
Current–voltage measurements at fixed pressures show monotonic non-linear behavior, which becomes more Ohmic at higher pressures and in all cases shows some hysteresis. The physical basis for conduction, particularly in the low pressure regime, can be described in terms of field assisted quantum mechanical tunneling.
Printable electronics is now an established area of technology with significant commercial potential in a wide range of application sectors that includes photovoltaics, super capacitors and RFID [1–3].
The development of technologies with electronic functionality that can be mass produced by printing processes has the potential to provide technical benefits, including lighter weight components, and can lead to significant cost benefits from the manufacturing process.
A wide range of materials and functionalities are currently under investigation for printable manufacture, from simple electrically conductive tracks [4], to flexible FETs [5]. An area of growing applications importance is touch sensitive components and surfaces for switching and position sensing.
In its simplest form, touch sensitivity requires some contact-sensitive switching capability. The addition of pressure sensitivity adds a third dimension to conventional two-dimensional touch surface interfaces, providing an additional input parameter based upon the applied force in addition to the surface location.
Functional force and location sensing touch pad technology based upon contact-resistance produced by printing has been demonstrated elsewhere [6, 7]. However, this approach involved additional patterning, through lithographic and printing methods, on top of a resistive layer or with the addition of features to create regular structures that were needed to create the pressure and location sensing capacity [6, 7].
An alternate approach is to develop an ink that is insulating when no pressure is applied, but has an intrinsic pressure sensitive electrical response, allowing direct printing of pressure sensitive components without the need for additional patterning and structures.
In bulk form, pressure sensitive electrically conducting switching composites have been a focus of research for over 50 years [8]. The first conductive composites were composed of metal or other conductive filler powders, such as nickel or carbon black, dispersed within insulating elastomers, such as rubber
Figure 1. (a) Schematic cross section of printed structure for the pressure sensitive test device (not to scale) and (b) photograph showing top view of a printed test device. The force probe is applied to the center of the printed disk.
The variation of conductivity behavior of such composites with filler loading has been described using percolation and effective medium theories, whereby the conductivity of the composite takes a value close to that of the bulk insulating matrix at low filler loading, and rises dramatically at the percolation threshold, a critical filler loading where direct electrical connections form between filler particles throughout the insulating matrix [11].
Such carbon black based conducting composites have been developed as inks for pressure sensing [12]. However, as the composite is loaded above the percolation threshold printed films have a finite start resistance and exhibit an inverse relationship between the starting resistance and pressure sensitivity of the resistive behavior.
Other research has shifted towards composites with filler particles of varying geometries and a wider range of insulating matrices [13–15]. For printing applications the challenge is to develop composite materials with appropriate pressure sensitive electrical behavior coupled with the structural requirements needed for preparation as inks that can be printed using conventional print technologies.
Such composite materials are not uncommon, having been a focus of research for use as conductive tracks and electrodes, chemical sensors and thin film transistors, and often comprise nanoscale conductive filler particles dispersed in a flowing polymer [16–20].
The choice of nanoscale filler particles has enabled the use of ink-jet printing for many of these composite materials; larger particles tend to clog the printer nozzles. This work presents a description of the functional behavior and physical structure of a new type of screen-printed (possible due to the choice of nanoscale filler particles) composite ink with electrical properties that are highly sensitive to applied force.
Investigation of the I–V behavior at constant pressure provides some insight into the physical mechanisms that may be responsible for the pressure sensitive electrical behavior.
2016年9月18日星期日
供应美国进口PTC材料
Henkel PTC Inks Lend New Efficiency, Functionality to Heating Applications
A streamlined replacement to traditional copper wire and printed carbon, Henkel’s PTC materials are enabling new designs for a variety of products that require efficient and adaptable heating functionality.
“Conventional flexible heating has been achieved through the use of wires and carbon inks, which can be cumbersome andchallenging,” explains Todd Williams, Henkel Global Product Manager for Inks and Coatings. “The LOCTITE ECI 8000 materials have exceptionally thin form factors, so can be printed for use within very tight spaces and in infinite patterns to accommodate various architectures. And, the performance is as impressive as the materials’ design adaptability. They offer the best of both worlds.”
LOCTITE ECI 8000 PTC inks are self-regulating so that the temperature does not rise above its set point. With traditional flexible heating technologies, there is a linear relationship between voltage and temperature, which usually requires a control unit to regulate temperature and a fuse to prevent overheating. LOCTITE ECI 8000 PTC inks, however, have a non-linear relationship between voltage and temperature, ensuring no
overheating and eliminating the need for a fuse and, in some applications, a control unit as well.
Henkel’s unique PTC inks offer numerous benefits including rapid and uniform heating, self-regulation, reduced weight as compared to traditional flexible heating options, and sustainability through environmental stability, long life, lower power consumption and reduced waste. Though application possibilities are endless for Henkel’s PTC ink technology, early success has already been achieved for automotive products such as mirrors and windshields, consumer goods that require condensation control, floor and wall heating and seat heaters, among others.
“Previous flexible heating solutions, while effective to a point, had limitations in terms of space adaptability and consistent heat regulation,” concludes Williams. “Henkel’s PTC inks open up new possibilities for all types of products in terms of design, consumer safety, product longevity and lower costs.”
“Conventional flexible heating has been achieved through the use of wires and carbon inks, which can be cumbersome andchallenging,” explains Todd Williams, Henkel Global Product Manager for Inks and Coatings. “The LOCTITE ECI 8000 materials have exceptionally thin form factors, so can be printed for use within very tight spaces and in infinite patterns to accommodate various architectures. And, the performance is as impressive as the materials’ design adaptability. They offer the best of both worlds.”
LOCTITE ECI 8000 PTC inks are self-regulating so that the temperature does not rise above its set point. With traditional flexible heating technologies, there is a linear relationship between voltage and temperature, which usually requires a control unit to regulate temperature and a fuse to prevent overheating. LOCTITE ECI 8000 PTC inks, however, have a non-linear relationship between voltage and temperature, ensuring no
overheating and eliminating the need for a fuse and, in some applications, a control unit as well.
Henkel’s unique PTC inks offer numerous benefits including rapid and uniform heating, self-regulation, reduced weight as compared to traditional flexible heating options, and sustainability through environmental stability, long life, lower power consumption and reduced waste. Though application possibilities are endless for Henkel’s PTC ink technology, early success has already been achieved for automotive products such as mirrors and windshields, consumer goods that require condensation control, floor and wall heating and seat heaters, among others.
“Previous flexible heating solutions, while effective to a point, had limitations in terms of space adaptability and consistent heat regulation,” concludes Williams. “Henkel’s PTC inks open up new possibilities for all types of products in terms of design, consumer safety, product longevity and lower costs.”
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