Novel modified natural rubber composition

A technology for natural rubber and composition, applied in the field of new modified natural rubber composition, can solve the problems of poor aging resistance, oil resistance and organic solvent resistance of rubber products, prone to thermo-oxidative aging, etc., so as to shorten the vulcanization time, Good oil resistance and aging resistance, good synergistic effect

Active Publication Date: 2015-12-09
浙江沃明交通设施股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, natural rubber itself also has certain defects, such as easy swelling in non-polar solvents, poor oil resistance and organic solvent resistance; unsaturated double bonds in the molecular structure are prone to thermal oxygen aging, ozone aging and photooxidative aging, resulting in The aging resistance of rubber products is poor, which limits the application of natural rubber. It is necessary to modify natural rubber to obtain rubber materials with good comprehensive properties to meet the requirements of society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The novel modified natural rubber composition of the present invention, its raw material comprises the following components by weight: 75 parts of modified natural rubber, 25 parts of epoxidized nitrile rubber, 5 parts of nano calcium carbonate, 5 parts of precipitated white carbon black 10 parts of carbon nanotubes, 2 parts of stearic acid, 0.9 parts of sulfur, 2 parts of zinc oxide, 1.8 parts of silicone peroxide, 0.6 parts of dicumyl peroxide, 0.3 parts of polyvinyl alcohol, lanthanum stearate 3 parts, 0.3 parts of anti-aging agent RD, 0.5 parts of anti-aging agent MB, 1.8 parts of anti-aging agent 4020, 0.3 parts of zinc dimethyl dithiocarbamate, 2 parts of cerium glutamic acid dithiocarbamate, accelerator NS0. 8 parts, 6 parts of plasticizer;

[0022] Wherein, the modified natural rubber is prepared according to the following process: add 10 parts of natural rubber to 60 parts of toluene in parts by weight, heat up to 72 ° C and stir to dissolve, then pass nitrogen...

Embodiment 2

[0024] The novel modified natural rubber composition of the present invention, its raw material comprises the following components by weight: 95 parts of modified natural rubber, 5 parts of epoxidized nitrile rubber, 30 parts of nano calcium carbonate, 20 parts of precipitated white carbon black 3 parts of carbon nanotubes, 4 parts of stearic acid, 0.3 parts of sulfur, 5 parts of zinc oxide, 1 part of organic silicon peroxide, 0.2 parts of dicumyl peroxide, 1.5 parts of polyvinyl alcohol, lanthanum stearate 1 part, 1.2 parts of anti-aging agent RD, 1.5 parts of anti-aging agent MB, 0.8 parts of anti-aging agent 40200, 0.7 parts of zinc dimethyl dithiocarbamate, 0.8 parts of cerium glutamic acid dithiocarbamate, accelerator NS1. 5 parts, 2 parts of plasticizer;

[0025] Wherein, the plasticizer is dibutyl phthalate; the organosilicon peroxide is methyl tri-tertbutylperoxysilane;

[0026] The modified natural rubber is prepared according to the following process: add 18 parts o...

Embodiment 3

[0028] The novel modified natural rubber composition of the present invention, its raw material comprises the following components by weight: 87 parts of modified natural rubber, 20 parts of epoxidized nitrile rubber, 17 parts of nano calcium carbonate, 17 parts of precipitated white carbon black 6 parts of carbon nanotubes, 3.4 parts of stearic acid, 0.47 parts of sulfur, 4.2 parts of zinc oxide, 1.5 parts of organic silicon peroxide, 0.42 parts of dicumyl peroxide, 1.1 parts of polyvinyl alcohol, lanthanum stearate 2.2 parts, 0.7 parts of antioxidant RD, 1.1 parts of antioxidant MB, 1.2 parts of antioxidant 4020, 0.57 parts of zinc dimethyl dithiocarbamate, 1.2 parts of cerium glutamic acid dithiocarbamate, accelerator NS1. 35 parts, 3.7 parts of plasticizer;

[0029] Wherein, the plasticizer is a mixture of dibutyl phthalate and coumarone resin in parts by weight of 1:3; the organosilicon peroxide is vinylmethyl ethyl tert-butyl peroxysilane ;

[0030] The modified natura...

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Abstract

The invention discloses a novel modified natural rubber composition. The novel modified natural rubber composition comprises modified natural rubber, epoxidized butadiene-acrylonitrile rubber, nano calcium carbonate, precipitated white carbon black, carbon nano tube, stearic acid, sulphur, zinc oxide, organosilicone peroxide, dicumyl peroxide, polyvinyl alcohol, lanthanum stearate, anti-aging agent RD, anti-aging agent MB, anti-aging agent 4020, zinc dimethyldithiocarbamate, cerium glutamic acid dithiocarbamate, accelerant NS, and a plasticizer. The novel modified natural rubber composition is high in strength, oil resistance, and aging resistance; and service life of rubber products prepared from the novel modified natural rubber composition is long.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a novel modified natural rubber composition. Background technique [0002] Natural rubber has good elasticity; has excellent self-reinforcement and mechanical strength; has good self-adhesiveness and air tightness; good processing performance, easy to masticate, knead, calender, and extrude; as a non-polar Rubber, has excellent electrical properties; has good alkali resistance, etc. Due to the above-mentioned excellent comprehensive properties of natural rubber, it has been widely used in various aspects such as industry, agriculture, national defense, traffic, transportation, machinery manufacturing, medical and health fields and daily life, such as water shoes and warm water used in daily life. Water bags, elastic bands; medical gloves, blood vessels, and catheters used in medical care; various tires used in transportation; transmission belts, transmission belts, vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L15/00C08L29/04C08K13/04C08K7/24C08K3/26C08K3/36C08K5/09C08K3/22C08K5/098C08K3/06
Inventor 邱再明
Owner 浙江沃明交通设施股份有限公司
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