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Preparation method of compound modified rubber material of lignin calcium carbonate

A technology of lignin calcium carbonate and modified rubber, applied in the field of rubber composite material preparation, can solve the problems of poor physical and mechanical properties and difficult to meet the requirements of use, and achieve the effects of broadening the scope of use, improving compatibility, and improving mechanical properties

Inactive Publication Date: 2017-11-24
ANHUI YICAINI FIBER MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of pure natural rubber or synthetic rubber, whether it is unvulcanized raw rubber or vulcanized rubber, its physical and mechanical properties are very poor and it is difficult to meet the requirements of use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a composite modified rubber material of lignin calcium carbonate, comprising the following steps:

[0021] Step 1: Mix 30 parts by weight of lignin with 10 parts by weight of calcium carbonate, and add 30 parts by weight of water, stir and mix at a high speed for 10 minutes, then put the mixture into a ball mill tank, and wet it on the ball mill at a speed of 240rpm ball milling for 6 hours to obtain lignin-calcium carbonate filler;

[0022] Step 2: masticate the natural rubber NR on an open mill for 15-20 minutes, and let it stand for more than 8 hours to eliminate the axial stress inside the natural rubber NR;

[0023] Step 3: batching according to the following parts by weight: 100 parts of natural rubber NR, 20 parts of lignin-calcium carbonate filler, 3 parts of zinc oxide, 2 parts of stearic acid, 1.2 parts of accelerator NS, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4010NA, 10 parts of white carbon black, 1.2 parts o...

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Abstract

The invention relates to a preparation method of a compound modified rubber material of lignin calcium carbonate and belongs to the technical field of rubber composite materials. The method comprises the steps of preparation of a lignin calcium carbonate compound, plastication of natural rubber (NR), mixing of ingredients, preparation of a mixed compound sheet, and sulfuration treatment of the mixed compound sheet. Lignin is used as an organic modifier of calcium carbonate, and can improve the compatibility of calcium carbonate and a rubber matrix; calcium carbonate can prevent lignin from reuniting in the mixing process, and the dispersion of lignin in the matrix is promoted. In conclusion, lignin and calcium carbonate are used as fillings and have high synergistic and reinforcement effects, lignin can improve the mechanical property of calcium carbonate in the composite materials and have a modification effect on calcium carbonate.

Description

technical field [0001] The invention belongs to the technical field of rubber composite material preparation, and in particular relates to a preparation method of a compound modified rubber material of lignin calcium carbonate. Background technique [0002] Composite materials are heterogeneous materials composed of two or more materials with different physical and chemical properties in a microscopic or macroscopic form. Because of pure natural rubber or synthetic rubber, whether it is unvulcanized raw rubber or vulcanized rubber, its physical and mechanical properties are very poor and it is difficult to meet the requirements of use. Therefore, compounding is one of the inevitable trends in the development of rubber materials. Contents of the invention [0003] According to the problems existing in the prior art, the present invention provides a preparation method of a compound modified rubber material of lignin calcium carbonate, which makes the raw materials more unif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L97/00C08K13/02C08K3/26C08K5/09C08K3/22C08K3/36C08K3/06
CPCC08L7/00C08K2003/2296C08K2003/265C08L97/005C08K13/02C08K3/26C08K5/09C08K3/22C08K3/36C08K3/06
Inventor 章云张贝尼张娃妮柯模松
Owner ANHUI YICAINI FIBER MATERIALS TECH