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Ethylene propylene diene monomer heat-conducting rubber

A technology of EPDM rubber and thermally conductive rubber, which is applied in the field of nano-new materials and can solve problems such as poor thermal conductivity, reduced mechanical properties, and high production costs

Active Publication Date: 2013-04-17
天津瑞艾化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research on filling thermally conductive rubber adopts the method of physical filling, which has poor thermal conductivity, serious decline in mechanical properties, and high production costs.

Method used

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  • Ethylene propylene diene monomer heat-conducting rubber
  • Ethylene propylene diene monomer heat-conducting rubber
  • Ethylene propylene diene monomer heat-conducting rubber

Examples

Experimental program
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Embodiment 1

[0047] Embodiment 1: In this embodiment, the high thermal conductivity nanometer rapid vulcanization composite EPDM rubber, the content ratio of each raw material component is as follows in parts by weight:

[0048] 240-300 parts of EPDM rubber,

[0049] Anti-aging agent 3-5 parts,

[0050] 60-100 parts of carbon black,

[0051] 1-3 parts of sulfur,

[0052] Accelerator 2-4 parts,

[0053] 5-9 parts of plasticizer,

[0054] 60-90 parts of paraffin oil,

[0055] 10-18 parts of inorganic active agent,

[0056] Dispersant 2-5 parts.

[0057] And it is prepared by the following steps:

[0058] The first step, synthetic rubber: the above raw materials are synthesized into rubber through an internal mixer;

[0059] The second step, molding: the synthetic rubber is molded by an open mill;

[0060] The third step, vulcanization: Put the formed rubber into the mold in the vulcanizer, and the pressure range is 150-210kgf / ㎝ 2 , heating up to 220-230°C for 80-100 seconds for vul...

Embodiment 2

[0061] Embodiment 2: The rubber dispersant is a reagent that promotes the uniform dispersion of material particles in the rubber medium to form a stable suspension. The rubber dispersant used in the embodiments of the present invention is one or more of the following reagents: triethylhexyl phosphoric acid, sodium lauryl sulfate, methyl amyl alcohol, cellulose derivatives, polyacrylamide, ancient Er gum, fatty acid polyethylene glycol ester.

Embodiment 3

[0063] The anti-aging agent used in one embodiment of the present invention is: 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline. Its trade name is antiaging agent AW. Antiaging agent AW is a brown viscous liquid, and the pure product is a light brown viscous liquid. Non-toxic, the specific gravity is 1.029~1.030 (25°C), and the boiling point is 169°C. Soluble in benzene, acetone, dioxyethane, carbon tetrachloride, solvent gasoline and ethanol; insoluble in water. Stable in storage. It is a special anti-ozone anti-aging agent, and it also has a protective effect on flex cracking and thermal oxygen aging. Especially suitable for products used under dynamic conditions. No frost, polluting, not suitable for light-colored products. When the amount is 1-2 parts, it has little effect on vulcanization, and when it is increased to 3 parts, it will significantly promote vulcanization, and the amount of promotion should be appropriately reduced during use.

[0064] The anti-aging age...

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Abstract

The invention discloses ethylene propylene diene monomer heat-conducting rubber. A plasticizer of the ethylene propylene diene monomer heat-conducting rubber is one or more of the following reagents: dioctyl phthalate, polyol benzoate, dioctyl adipate, dihexyl adipate, butyl benzyl phthalate and di-2-ethylhexyl sebacate; and a dispersant of the ethylene propylene diene monomer heat-conducting rubber is one or more of the following reagents: triethylhexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose derivative, polyacrylamide, guar gum and polyethylene glycol fatty acid. When an inorganic particle filler is ultrafine and even nanometer-sized, the heat conductivity of the inorganic particle filler is qualitatively changed due to the change of atomic distances and structures in particles. The heat conducting coefficient of high-purity fine magnesium oxide is not less than 50 w / (m.K) and is equivalently 4 times that of silicon oxide and 3 times that of aluminum oxide.

Description

technical field [0001] The invention relates to the technical field of new nanometer materials, in particular to a EPDM heat-conducting rubber. Background technique [0002] Now, as electronic products tend to be more and more miniaturized, composite rubber substrates that are easy to integrate and miniaturize and have good flexibility are widely used, but because of the high integration of integrated circuits and the multilayering of laminates, there will inevitably be Therefore, the requirements for the thermal conductivity of these materials have become a top priority. [0003] Ethylene-propylene-diene rubber (EPDM) is a terpolymer of ethylene, propylene and diene monomers. The introduction of diene is to realize vulcanization. The types of diene are: dicyclopentadiene (DCPD), 1,4 Hexadiene. EPDM is tougher than ordinary ethylene propylene rubber. [0004] In recent years, people have filled polymers with non-conductive metal oxides and other compounds, which has initi...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/06C08K3/22C08K5/11C08K5/12C08K3/34C08K3/38C08K5/18C08K3/28
Inventor 杨高林孙向红江志鑫
Owner 天津瑞艾化工科技股份有限公司
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