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Modified chloroprene rubber V band and method for preparing same

A chloroprene rubber and modification technology is applied in the field of carbon nanotube composite additive modified chloroprene rubber V-belt and its preparation field. Good heat resistance, antistatic and flame retardant properties improve, reduce the effect of fire hazards

Active Publication Date: 2009-12-16
SANLUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the prior art is not ideal for improving the performance of the base rubber, especially for heat resistance, oil resistance, and antistatic performance.

Method used

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  • Modified chloroprene rubber V band and method for preparing same
  • Modified chloroprene rubber V band and method for preparing same
  • Modified chloroprene rubber V band and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The carbon nanotubes are refluxed and purified with nitric acid with a concentration of 98% by mass, and are combined with ultrasonic vibration to prepare the nitric acid-modified carbon nanotubes.

[0045] Take the above 20 parts by weight of nitric acid modified carbon nanotubes, 10 parts by weight of carbon black obtained by soaking in hydrochloric acid with a concentration of 5% by mass and then vacuum drying at 10°C, and 2 parts by weight of phosphorus trioxide and compound them by wet method Composite additives are prepared.

[0046] Put 100 parts by weight of chloroprene rubber in a double-roller plastic mixer, the temperature of the rollers is 45°C, the temperature difference between the front and rear rollers is 10°C, the distance between the rollers is 1mm, the speed ratio of the front and rear rollers is 1:1.27, and after 10min of mastication, let it stand in the air. After cooling, add 15 parts by weight of sulfur and the above-mentioned composite additives,...

Embodiment 2

[0048] The carbon nanotubes are refluxed and purified with nitric acid with a concentration of 98% by mass, and are combined with ultrasonic vibration to prepare the nitric acid-modified carbon nanotubes.

[0049] Take the above 50 parts by weight of nitric acid modified carbon nanotubes, 10 parts by weight of carbon black obtained by soaking in hydrochloric acid with a mass percent concentration of 20% and then vacuum drying at 20 ° C, and 5 parts by weight of phosphorus trioxide. Composite additives are prepared.

[0050] Put 100 parts by weight of chloroprene rubber in a double-roller masticator, the roller temperature is 50°C, the temperature difference between the front and rear rollers is 11°C, the roller distance is 0.9mm, and the front and rear roller speed ratio is 1:1.27. After 15 minutes of mastication, let it stand in the air After cooling, add 12 parts by weight of sulfur and the above-mentioned composite additives, pre-mix for a few minutes in a two-roller mill w...

Embodiment 3

[0052] The carbon nanotubes are refluxed and purified with nitric acid with a concentration of 98% by mass, and are combined with ultrasonic vibration to prepare the nitric acid-modified carbon nanotubes.

[0053] Take the above 35 parts by weight of nitric acid-modified carbon nanotubes, 20 parts by weight of the carbon black obtained by vacuum drying at 55° C. and 2 parts by weight of phosphorus pentoxide by dry method Composite to make composite additives.

[0054] Put 100 parts by weight of chloroprene rubber in a double-roller plastic mixer, the temperature of the rollers is 55°C, the temperature difference between the front and rear rollers is 12°C, the distance between the rollers is 1.2mm, the speed ratio of the front and rear rollers is 1:1.27, and it is masticated for 15 minutes and left to stand in the air After cooling, add 18 parts by weight of sulfur and the above-mentioned composite additives, and pre-mix for several minutes in a two-roller masticator with a rol...

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Abstract

The invention discloses a modified chloroprene rubber V band and a method for preparing the same. The rubber matrix of the modified chloroprene rubber V band is prepared by mixing the following raw materials in portion by weight: 100 portions of chloroprene rubber, 20 to 50 portions of acid modification carbon nano-tube, 10 to 20 portions of carbon black, 2 to 10 portions of phosphorus oxide, 12 to 18 portions of sulfur, 0.3 to 5 portions of anti-aging agent, 1 to 5 portions of filler, 3 to 7 portions of softener, 2 to 10 portions of plasticizer, and 1 to 6 portions of promoter. The modified chloroprene rubber V band has good properties of heat resistance, oil corrosion resistance, static resistance and fire retardation, and can be widely applied to mechanical transmission systems under special operation environments in the industries such as coal mines, petroleum, chemical engineering, paper making and the like.

Description

technical field [0001] The invention relates to the field of rubber V-belt processing, in particular to a neoprene V-belt modified with a carbon nanotube composite additive and a preparation method thereof. Background technique [0002] Because the existing rubber V-belts are mainly made of rubber, it is easy to generate static electricity during use. After the static electricity accumulates, it will absorb dust, aggravate the slipping of the rubber V-belt, and cause electrostatic discharge. It is not suitable for use where static electricity accumulation is easy to cause discharge. Special working occasions, and common V-belts for general transmission, the main rubber is natural rubber, because the molecular structure of natural rubber is polyisoprene (--CH 2 -C=CHCH 2 (CH 3 )-) n , with -CH in the molecular structure 3 And the effect of α-H makes the -C=CH- double bond structure bond energy low, not heat-resistant and oil-resistant, so the ordinary V-belt with natural ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08K13/06C08K3/04C08K3/32
Inventor 石水祥滕伟洁
Owner SANLUX
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