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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 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 accelerators, antioxidants, sulfur and other additives, in the mixing process Add 0.2 g of proline to it, mix well and vulcanize to make rubber products.

[0032] Operation steps: natural rubber is masticated in an open mill at a temperature of 45℃-55℃, and the material is discharged when its Mooney viscosity reaches 60[ML(1+4)100℃]. The plasticized rubber is mixed on the mixer, and vulcanization accelerator, proline, antioxidant, zinc oxide, stearic acid, and various fillers are added in order. After a period of mixing, sulfur is added. These compounding agents are mixed uniformly and then discharged, during which the roller temperature of the mixer is controlled at 45℃-55℃. The mixed rubber is then calendered, extruded, molded, and vulcanized in a vulcanizer at 140°C (the most s...

Example Embodiment

[0033] Example 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 accelerators, antioxidants, sulfur and other additives, in the mixing process 0.5g of proline is added to it, mixed evenly and then vulcanized to make rubber products.

[0035] There are many types of synthetic rubber, and the operating conditions of each synthetic rubber are different. The following takes the operating steps of polyisoprene rubber as an example.

[0036] Operation steps: when the Mooney viscosity of polyisoprene rubber is lower than 60[M(1+4)100℃], it does not need to be masticated, and the polyisoprene rubber that needs to be masticated is first set at a roll temperature of 50℃- Pass 1-2 times on the open mill with a small roller pitch at 60℃. After the film wraps the rollers, slightly increase the roller pitch and continue to masticate for about 2 minutes, so t...

Example Embodiment

[0037] Example 3

[0038] The production method of rubber products, in the mixed rubber composed of 1 kg of natural rubber and 1 kg of synthetic rubber, together with other compounding agents, 2 g of proline is added during the mixing process, and the mixture is uniformly mixed and then vulcanized. rubber products.

[0039] Among the mixed rubber composed of natural rubber and synthetic rubber, most of the synthetic rubber can have good compatibility with natural rubber, and the combined effect is very good. However, there are many types 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 takes the operating steps of the mixed rubber composed of polyisoprene rubber and natural rubber as an example.

[0040] Operation steps: first masticate the two rubbers separately, and then make the natural rubber masticated rubber roll on the mixer, add 15% polyisoprene rubber masticated rubber...

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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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