Method for preparing faceted heater from ultraviolet crosslinking macromolecular positive temperature coefficient (PTC) material through adopting three-dimensional (3D) printing mode

A cross-linked polymer, 3D printing technology, applied in the field of polymer PTC materials, can solve the problems of complex process and inability to achieve, and achieve the effect of better device technology

Inactive Publication Date: 2013-08-07
CHENGDU SHUNKANG ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polymer PTC materials and their devices are not suitable for manufacturing products with irregular shapes. Even if they are manufactured, the process is quite complic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: A method for preparing planar heaters by using ultraviolet light crosslinked polymer PTC materials by 3D printing described in this embodiment is characterized in that it is produced according to the following steps:

[0037] a. Mixing: by weight, put 100g ethylene-vinyl acetate copolymer (EVA), 20g carbon black, 1g benzophenone BP, and 1g trimethylolpropane triacrylate (TMPTA) into a high-speed mixer Stir and mix at room temperature for 3 minutes to form a mixture;

[0038] b. Make a slurry: Pour the mixture and 100g of tetrahydrofuran into an internal mixer, carry out internal mixing at a temperature of 130°C for 15 minutes, then allow it to cool naturally to room temperature, and then place it in a three-roll rolling mill pulping ， Repeat rolling 4 times to form PTC slurry, and the speed ratio of the three-roll rolling mill is set as 1：3：9 ;

[0039] c. 3D printing molding: 3D printing the PTC slurry to prepare the PTC planar heating body; the printi...

Embodiment 2

[0043] Embodiment 2: A method for preparing a planar heater by using ultraviolet light cross-linked polymer PTC material by 3D printing described in this embodiment is characterized in that it is produced according to the following steps:

[0044] a. Mixing: by weight, put 100g ethylene-vinyl acetate copolymer (EVA), 25g carbon black, 1g benzophenone BP, and 1g trimethylolpropane triacrylate (TMPTA) into a high-speed mixer Stir and mix at room temperature for 3 minutes to form a mixture;

[0045] b. Make a slurry: Pour the mixture and 100g of tetrahydrofuran into an internal mixer, carry out internal mixing at a temperature of 130°C for 15 minutes, then allow it to cool naturally to room temperature, and then place it in a three-roll rolling mill pulping ， Repeat rolling 4 times to form PTC slurry, and the speed ratio of the three-roll rolling mill is set as 1：3：9 ;

[0046] c. 3D printing molding: 3D printing the PTC slurry to prepare the PTC planar heating body; the print...

Embodiment 3

[0050] Embodiment 3: A method for preparing planar heaters by using ultraviolet light crosslinked polymer PTC materials by 3D printing described in this embodiment is characterized in that it is produced according to the following steps:

[0051] a. Mixing: by weight, put 100g of ethylene-vinyl acetate copolymer (EVA), 30g of carbon black, 1g of benzophenone BP, and 1.5g of trimethylolpropane triacrylate (TMPTA) into a high-speed mixer Stir and mix at room temperature for 3 minutes to form a mixture;

[0052] b. Make a slurry: Pour the mixture and 100g of tetrahydrofuran into an internal mixer, carry out internal mixing at a temperature of 130°C for 15 minutes, then allow it to cool naturally to room temperature, and then place it in a three-roll rolling mill pulping ， Repeat rolling 4 times to form PTC slurry, and the speed ratio of the three-roll rolling mill is set as 1：3：9 ;

[0053] c. 3D printing molding: 3D printing the PTC slurry to prepare the PTC planar heating bo...

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Abstract

The invention relates to a method for preparing a faceted heater from an ultraviolet crosslinking macromolecular positive temperature coefficient (PTC) material through adopting a three-dimensional (3D) printing mode. The method comprises the following steps: a, stirring and mixing 100 parts of polyolefin and/or ethylene-propylene-diene-terpolymer rubber, 15-30 parts of carbon powder, 1-1.5 parts of an ultraviolet initiator and 1-1.5 parts of a crosslinking agent to form a mixed material; b, pouring the mixed material and 100 parts of tetrahydrofuran into an internal mixer to internally mix, and pulping the mixture in a three-roll mill after cooling so as to form a PTC size; c, preparing a PTC faceted heating body from the PTC size through 3D printing; d, irradiating the formed PTC faceted heating body through an ultraviolet light source to form a crosslinking PTC faceted heating body; and e, laminating the crosslinking PTC faceted heating body through laminating equipment to form the faceted heater. By utilizing the method, various 3D printing materials can be provided, and macromolecular PTC materials and devices thereof are simple in technology, energy-saving and environmental-friendly.

Description

technical field [0001] The invention belongs to the technical field of polymer PTC materials, and in particular relates to a method for preparing planar heaters by crosslinking polymer PTC materials with ultraviolet light and adopting 3D printing. Background technique [0002] "3D printing" is a popular name, and its academic name is rapid prototyping technology, also known as additive manufacturing technology. Model data, the technology of making a physical model by means of material accumulation through molding equipment. 3D printers can make more and more objects, from automobile and aircraft parts, to food, to human organs and more. 3D printing technology is a major breakthrough in the world's manufacturing technology field in the past 20 years. It is the integration of mechanical engineering (precision manufacturing), computer technology (software development), numerical control technology, material science and other multidisciplinary technologies. It is the most diff...

Claims

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Application Information

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IPC IPC(8): C08K3/04C08J3/28C08L23/08C08J3/24C08K7/06C08L23/16
Inventor 杨敬义叶峰
Owner CHENGDU SHUNKANG ELECTRONICS
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