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Cold-resistant rubber and preparation method therefor

A technology of cold-resistant rubber and neoprene, applied in the field of rubber, can solve the problems of poor cold resistance of neoprene rubber, hardening of raw rubber, and increase of Mooney viscosity

Inactive Publication Date: 2015-11-11
WUHU FENGXUE RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although neoprene has the above-mentioned excellent properties, the cold resistance of neoprene is poor
In a low temperature environment, chloroprene rubber will produce a "self-sulfur" phenomenon, the Mooney viscosity will increase, and the raw rubber will harden, which greatly limits the application of chloroprene rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The present invention also provides a kind of preparation method of cold-resistant rubber, comprising:

[0017] 1) Soak coconut palm in hydrochloric acid solution, then filter to obtain additive;

[0018] 2) Mix neoprene, glass powder, paraffin, carbon black, mercaptan-based imidazoline, zinc oxide, sodium lignosulfonate, dibutyl adipate, alum powder and additives, melt and cool to make cold-resistant rubber .

[0019] In the preparation method provided by the present invention, the amount of each component can be selected in a wide range, but in order to make the cold-resistant rubber obtained have more excellent mechanical properties and cold resistance, preferably, relative to 100 parts by weight of chlorine Butadiene rubber, the consumption of glass powder is 7-9 parts by weight, the consumption of paraffin wax is 12-20 parts by weight, the consumption of carbon black is 9-13 parts by weight, the consumption of thiol imidazoline is 2-6 parts by weight, oxidation T...

Embodiment 1

[0025] 1) Coconut palm is soaked in the hydrochloric acid solution (the concentration of hydrochloric acid is 25% by weight) of 25 ℃ in 25h, then filter and make additive;

[0026] 2) Neoprene, glass powder, paraffin, carbon black, mercaptan imidazoline, zinc oxide, sodium lignin sulfonate, dibutyl adipate, alum powder and additives (the weight ratio is 100:8:16 : 10: 4: 6: 7: 18: 11: 13) mixed, melted at 190°C for 40 minutes, and then cooled to obtain cold-resistant rubber A1.

Embodiment 2

[0028] 1) Coconut palm is soaked in the hydrochloric acid solution (the concentration of hydrochloric acid is 20% by weight) of 15 ℃ in 20h, then filter and make additive;

[0029] 2) Neoprene, glass powder, paraffin, carbon black, mercaptan-based imidazoline, zinc oxide, sodium lignosulfonate, dibutyl adipate, alum powder and additives (the weight ratio is 100:7:12 :9:2:3:4:15:8:12) mixed, melted at 180°C for 30 minutes, and then cooled to obtain cold-resistant rubber A2.

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PUM

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Abstract

The invention discloses cold-resistant rubber and a preparation method therefor. The cold-resistant rubber comprises chloroprene rubber, glass powder, paraffin, carbon black, mercaptoimidazoline, zinc oxide, sodium lignin sulfonate, dibutyl adipate, alum powder and an additive; and the additive is prepared by soaking coconut fibers into a hydrochloric acid solution to obtain a mixture, and then filtering the mixture. The cold-resistant rubber has excellent mechanical property and cold resistance.

Description

technical field [0001] The invention relates to rubber, in particular to a cold-resistant rubber and a preparation method thereof. Background technique [0002] Neoprene is a synthetic rubber produced by α-polymerization of chloroprene (ie 2-chloro-1,3-butadiene) as the main raw material. It is widely used in anti-weather products, viscose soles, coatings and rocket fuel. Neoprene has excellent physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance and chemical corrosion resistance. [0003] Although neoprene has the above-mentioned excellent properties, the cold resistance of neoprene is relatively poor. In a low-temperature environment, neoprene will produce a "self-sulfur" phenomenon, the Mooney viscosity will increase, and the raw rubber will harden, which greatly limits the application of neoprene. Contents of the invention [0004] The object of the present invention is to provide a cold-resista...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08L91/06C08L97/00C08L97/02C08K13/02C08K3/40C08K3/04C08K3/22C08K5/11C08K3/30
Inventor 苏福男陆雪龙
Owner WUHU FENGXUE RUBBER
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