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Electrical resistor inner filler effective in electric radiation isolation

A resistor and electrical radiation technology, applied in the field of resistors, can solve the problems of poor moisture resistance, inability to effectively prevent gas release, and the inability of the resistor shell to shield electromagnetic radiation, so as to improve compatibility and strength. Improved, good high temperature resistance and flame retardancy

Inactive Publication Date: 2019-03-08
安徽科比电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional resistor casing cannot play the role of shielding electromagnetic radiation, cannot effectively prevent the release of gas generated during or after the plastic packaging process, and has poor resistance to moisture

Method used

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  • Electrical resistor inner filler effective in electric radiation isolation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, a kind of resistor internal filler that effectively isolates electric radiation, comprises the raw material of following weight part: acrylate rubber 400kg, polytetrafluoroethylene 280kg, silicon rubber 280kg, polysulfide rubber 45kg, bisphenol epoxy resin 16kg, aliphatic epoxy resin 17kg, glass fiber 15kg, asbestos fiber 20kg, kaolin 35kg, bentonite 22kg, UV protection agent 8kg, waterproofing agent 12kg, antioxidant 5kg, zinc oxide 10kg, aluminum oxide 10kg, magnesium oxide 15kg, accelerator 4kg, surfactant 15kg, flame retardant 5kg.

[0020] The present invention also provides a method for preparing a resistor inner filler that effectively isolates electric radiation, comprising the following steps:

[0021] (1) Add acrylate rubber, polytetrafluoroethylene, silicone rubber, and polysulfide rubber into the internal mixer, raise the temperature to 160°C, and react and mix for 4-5 hours under the protection of nitrogen; then add reinforcing fiber, kaolin, ...

Embodiment 2

[0023] Embodiment 2, a kind of resistor inner filler that effectively isolates electric radiation, comprises the following raw materials in parts by weight: acrylate rubber 400kg, polytetrafluoroethylene 280kg, silicon rubber 280kg, polysulfide rubber 45kg, bisphenol epoxy resin 16kg, aliphatic epoxy resin 17kg, glass fiber 15kg, asbestos fiber 20kg, kaolin 35kg, bentonite 22kg, UV protection agent 8kg, waterproofing agent 12kg, antioxidant 5kg, zinc oxide 10kg, aluminum oxide 10kg, magnesium oxide 15kg, accelerator 4kg, surfactant 15kg, flame retardant 5kg, modified gangue powder 35kg.

[0024] The present invention also provides a method for preparing a resistor inner filler that effectively isolates electric radiation, comprising the following steps:

[0025] (1) Add acrylate rubber, polytetrafluoroethylene, silicone rubber, and polysulfide rubber into the internal mixer, raise the temperature to 160°C, and react and mix for 4-5 hours under the protection of nitrogen; then ...

Embodiment 3

[0028] The same as embodiment 2 will not be repeated, and the difference from embodiment 2 is:

[0029] Preferably, the modification method of the modified coal gangue powder is as follows: adding limestone powder to the coal gangue, calcination at high temperature to obtain a fired product, mixing low-melting point glass powder and glass fiber into the fired product, and using Polyvinyl alcohol aqueous solution is used as a binder, mixed and sieved to obtain plastic particles, that is, modified coal gangue powder.

[0030] In a further technical solution, the weight ratio of the coal gangue, limestone powder, low-melting glass powder and glass fiber is 1:(0.3-0.7):(0.5-0.8):(0.1-0.3).

[0031] In a further technical solution, the weight ratio of the coal gangue, limestone powder, low-melting glass powder and glass fiber is 1:0.6:0.7:0.2.

[0032] In a further technical solution, the particle size of the low-melting glass powder is 1-100 μm.

[0033] In a further technical s...

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Abstract

The invention discloses electrical resistor inner filler effective in electric radiation isolation. The electrical resistor inner filler is prepared from, by weight, 260-700 parts of acrylic ester rubber, 260-350 parts of polytetrafluoroethylene, 260-350 parts of silicon rubber, 40-60 parts of polysulfide rubber, 30-40 parts of an epoxy thickening agent, 32-44 parts of reinforcing fibers, 30-45 parts of kaolin, 20-30 parts of bentonite, 8-10 parts of an ultraviolet-proof agent, 10-15 parts of a waterproof agent, 5-7 parts of an antioxidant, 30-40 parts of inorganic heat-conducting filler, 4-6parts of an accelerant, 10-23 parts of a surfactant, 5-7 parts of a flame retardant and 30-40 parts of modified coal gangue powder. The electrical resistor inner filler is not only excellent in insulativity but also great in waterproof and damp-proof performance and airtightness; by modification, great heat conducting and dissipating performances, high-temperature resistance and flame retardationare achieved, short circuit caused by high temperature and overburning of the an electrical resistor is avoided, and the service life of the electrical resistor is prolonged.

Description

Technical field: [0001] The invention relates to the technical field of resistors, in particular to a resistor internal filling material for effectively isolating electric radiation. Background technique: [0002] Resistors are generally directly referred to as resistances in daily life. It is a current-limiting element. After the resistor is connected to the circuit, the resistance value of the resistor is fixed. Generally, there are two pins, which can limit the current through the branch it is connected to. A resistor whose resistance value cannot be changed is called a fixed resistor. Those with variable resistance are called potentiometers or variable resistors. An ideal resistor is linear, that is, the instantaneous current through the resistor is proportional to the instantaneous applied voltage. Variable resistors for voltage division. On the exposed resistor body, one or two movable metal contacts are pressed tightly. The position of the contacts determines the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L27/18C08L83/04C08L81/04C08K13/08C08K11/00C08K9/04C08K3/34C08K3/40C08K7/14
CPCC08L33/04C08L2201/02C08L2201/08C08L2203/20C08L2205/035C08L27/18C08L83/04C08L81/04C08K13/08C08K11/005C08K9/04C08K3/346C08K3/40C08K7/14
Inventor 陈普琦陆玲马孝对苗刘兰
Owner 安徽科比电子科技有限公司