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A kind of preparation method of lignin rubber auxiliary agent and tire rubber

A technology of rubber additives and lignin, which is applied in the field of rubber additives, can solve the problems of cumbersome preparation process and inability to enhance the wear resistance of rubber, and achieve the effects of simple preparation process, increased wear resistance, and reduced wear volume

Active Publication Date: 2016-04-13
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But above-mentioned method with lignin as reinforcing agent, its prepared rubber can not strengthen the abrasion resistance of rubber, and preparation process is loaded down with trivial details

Method used

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  • A kind of preparation method of lignin rubber auxiliary agent and tire rubber
  • A kind of preparation method of lignin rubber auxiliary agent and tire rubber
  • A kind of preparation method of lignin rubber auxiliary agent and tire rubber

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preparation example Construction

[0029] The invention provides a kind of preparation method of lignin rubber auxiliary agent, comprises the following steps:

[0030] A) The alkali lignin solution is obtained after mixing the alkali lignin with the lye;

[0031] B) The above-mentioned alkali lignin solution is filtered through an alkali-resistant nanofiltration membrane to obtain a lignin rubber additive; the weight average molecular weight of the lignin rubber additive is 100-1000.

[0032] In the invention, the alkali lignin is mixed with the lye to obtain an alkali lignin solution, and then the above alkali lignin solution is filtered by a nanofiltration membrane to obtain a lignin rubber additive with a weight average molecular weight of 100-1000. The lignin rubber additive provided by the invention can increase the abrasion resistance of rubber, and the preparation process is simple.

[0033] All the raw materials of the present invention have no special limitation on their sources, they can be purchased...

Embodiment 1

[0052] Mix 50g NaOH and 2500g water to prepare an alkali solution with a mass concentration of 2%, then put 500g of untreated commercially available alkali lignin (Shandong Quanlin Chemical Co., Ltd.) into the alkali solution and stir until completely dissolved to obtain alkali lignin The solution was then circulated and filtered with a roll-type nanofiltration membrane with a molecular weight cut-off of 1000. After 2 hours, stop filtering to obtain a small molecule lignin solution, and heat it to 70°C, then slowly add sulfuric acid with a mass concentration of 30% to the above small molecule lignin solution for acid analysis until the pH value of the filtrate is 3.5. After the acid analysis is completed, the small molecule lignin mixture obtained by the above acid analysis is centrifuged to obtain solid lignin, and then the solid lignin is dried in an oven at a drying temperature of 40°C and a drying time of 8 hours to obtain Dry powdered lignin.

[0053] Wash the above-ment...

Embodiment 2

[0055] The rubber, carbon black, rubber additives and the lignin rubber additives prepared in Example 1 were mixed and vulcanized according to the following formula, and the formula was as follows:

[0056] Rubber 100g; carbon black N23445g; naphthenic oil 2.0g; stearic acid 3.0g; zinc oxide 5.0g; microcrystalline wax 1.0g; antioxidant RD2.0g; antioxidant 40201.5g; ; The lignin rubber auxiliary agent 2.0g prepared by this patent.

[0057] Mixing is carried out on a 1L internal mixer, and the mixing process is as follows:

[0058] Table 1 Rubber mixing process

[0059]

[0060]

[0061] Obtain the tire rubber A described in this patent after mixing through the above-mentioned process 1 .

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Abstract

The invention provides preparation methods of a lignin rubber additive and tyre rubber. The preparation method of the lignin rubber additive comprises the following steps of mixing alkali lignin and an alkali liquor to obtain an alkali lignin solution, and filtering the alkali lignin solution by a nanofiltration membrane to obtain the lignin rubber additive, wherein the lignin rubber additive has weight-average molecular weight of 100-1000. The lignin rubber additive obtained by the preparation method can improve wear resistance of rubber and the preparation method has simple processes. Compared with the common tyre rubber, the tyre rubber with the lignin rubber additive has better wear resistance and has other performance indexes in a normal value scope.

Description

technical field [0001] The invention belongs to the technical field of rubber additives, in particular to a lignin rubber additive and a preparation method of tire rubber. Background technique [0002] Rubber is a polymer material that is extracted from plants or artificially synthesized, and then processed to be elastic, insulating, impervious to water and air. Rubber materials are widely used in various aspects of industry or life. However, rubber materials are often difficult to obtain high mechanical strength without reinforcement. Adding rubber reinforcement additives can significantly improve the physical and mechanical properties of rubber materials. [0003] Commonly used rubber reinforcement additives include powder materials such as carbon black and clay, and polymer materials such as resin and lignin. With the deepening of human understanding of environmental pollution and resource crisis, the renewable and degradable properties of natural polymers are increasing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/00C08H7/00C08L21/00C08L97/00C08K3/04C08K3/22
Inventor 唐一林江成真焦峰董岳徐秋石
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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