Applications of proline in aspects of vulcanization, reinforcement and aging resistance of rubber

A technology of rubber vulcanization and proline, which is applied in the field of rubber production, can solve the problems of performance degradation and great impact on rubber performance, and achieve the effect of accelerating the vulcanization rate

Inactive Publication Date: 2013-01-02
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] During the coagulation of natural fresh latex, the curing of clot, creasing, granulation, etc., most of the non-rubber components in the latex are discharged with the whey, and only a small part remains in the dry rubber, but this small part is non-rubber The composition has a great influence on the properties of rubber, and if the non-rubber components in natural rubber are removed, its performance will be greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The production method of rubber products, in 1 kg of natural rubber, together with fillers (such as carbon black or white carbon black), stearic acid, zinc oxide, vulcanization accelerator, anti-aging agent, sulfur and other compounding agents, in the mixing process Add 0.2 grams of proline to the mixture, knead evenly and vulcanize to make rubber products.

[0032] Operation steps: The natural rubber is masticated in an open mill at a temperature of 45°C-55°C, and the material is discharged when the Mooney viscosity reaches 60 [ML (1+4) 100°C]. The plasticized rubber is kneaded on the kneader, and vulcanization accelerator, proline, anti-aging agent, zinc oxide, stearic acid, and various fillers are added in sequence, and sulfur is added after a period of kneading. These compounding ingredients are mixed uniformly and discharged, during which the roller temperature of the kneader is controlled at 45°C-55°C. The kneaded rubber is then calendered, extruded, shaped, and ...

Embodiment 2

[0034] The production method of rubber products, in 1 kg of synthetic rubber, together with fillers (such as carbon black or white carbon black), stearic acid, zinc oxide, vulcanization accelerator, anti-aging agent, sulfur and other compounding agents, in the mixing process Add 0.5 g of proline to the mixture, knead evenly and vulcanize to make rubber products.

[0035]There are many kinds of synthetic rubber, and the operating conditions of each synthetic rubber are different. The following is an example of the operation steps of polyisoprene rubber.

[0036] Operation steps: When the Mooney viscosity of polyisoprene rubber is lower than 60 [M (1+4) 100°C], no mastication is required, and the polyisoprene rubber that needs to be masticated is first heated at a roller temperature of 50°C- Thin pass 1-2 times on the open mill with a small roller distance at 60°C. After the film is covered with rollers, slightly increase the roller distance and continue to masticate for about 2...

Embodiment 3

[0038] The production method of rubber products is to add 2 grams of proline to the mixed rubber composed of 1 kg of natural rubber and 1 kg of synthetic rubber together with other compounding agents, and vulcanize after mixing evenly. rubber products.

[0039] In the mixed rubber composed of natural rubber and synthetic rubber, most of the synthetic rubber has good compatibility with natural rubber, and the combination effect is very good. There are many kinds of synthetic rubber, and the operating conditions of the mixed rubber composed of each synthetic rubber and natural rubber are not the same. The following is an example of the operation steps of the mixed rubber composed of polyisoprene rubber and natural rubber.

[0040] Operation steps: First put the two kinds of rubber into plastication and park them respectively, then make the plasticization rubber of natural rubber roll on the mixer, add 15% polyisoprene rubber in the plastication rubber and mix them together, and ...

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PUM

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Abstract

The invention discloses applications of proline in aspects of vulcanization, reinforcement and aging resistance of rubber. A first usage method of the proline includes adding the proline during primary processing of the rubber, wherein the added quantity of the proline is 0.01%-1% of the total weight of the rubber; and a second usage method of the proline includes adding the proline during the production of rubber products, wherein the added quantity of the proline is 0.01%-1% of the total weight of the rubber. According to the applications of the proline in the aspects of vulcanization, reinforcement and aging resistance of the rubber, vulcanization rates of rubber vulcanization processes can be increased, and simultaneously, tensile strength and aging resistant performances of the rubber products are improved.

Description

technical field [0001] The present invention relates to the application of proline in the aspects of rubber vulcanization accelerator, reinforcement and anti-aging, and specifically relates to the new application of proline in improving rubber vulcanization rate, enhancing the tensile strength of rubber vulcanizate and improving the anti-aging performance of rubber, belonging to Technical field of rubber production. Background technique [0002] Rubber is divided into natural rubber and synthetic rubber. The natural rubber of the present invention is obtained from the fresh latex produced by Hevea brasiliensis through coagulation, aging, crumpling, granulation and drying. [0003] The fresh latex produced by the Brazilian Hevea tree is generally called natural fresh latex. The composition of natural fresh rubber latex is very complex. In addition to rubber hydrocarbons, it also contains dozens of other substances, that is, non-rubber substances. These substances account fo...

Claims

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Application Information

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IPC IPC(8): C08K5/3415C08L21/00C08L7/00
Inventor 张北龙邓维用黄红海丁丽
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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