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Modified natural rubber composite material with low rolling resistance and wet skid resistance and preparation method thereof

A technology of natural rubber and composite materials, which is applied in the field of low rolling resistance wet slip modified natural rubber composite materials and its preparation, which can solve the problems of affecting the reinforcement effect, easy agglomeration, weak interface interaction, etc., and achieve wet slip resistance Improvement, low rolling resistance, rolling resistance reduction effect

Active Publication Date: 2021-05-11
ZHONGBEI UNIV +1
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  • Claims
  • Application Information

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Problems solved by technology

However, the more hydroxyl groups on the surface of silica make it easy to agglomerate, which affects the reinforcing effect, and the interface interaction between silica and rubber matrix is ​​weak

Method used

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  • Modified natural rubber composite material with low rolling resistance and wet skid resistance and preparation method thereof
  • Modified natural rubber composite material with low rolling resistance and wet skid resistance and preparation method thereof
  • Modified natural rubber composite material with low rolling resistance and wet skid resistance and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-4

[0046] Embodiment 1-4 Preparation of low rolling resistance wet slip modified natural rubber composite material:

[0047]Prepare according to the formula in Table 1 as follows:

[0048] ① Prepare the prepared modified silica particles in proportion by mass to prepare an aqueous solution. After ultrasonication for 15 minutes, add it to natural rubber latex with a solid content of 60%. After mechanical stirring for 30 minutes, calcium chloride solution is used for demulsification. After drying in an oven at 70°C, the master batch is obtained;

[0049] ②Under the conditions of 90°C and 40rpm, masticate the dry masterbatch obtained in step ① in an internal mixer, and add 5 parts by mass of zinc oxide, 2 parts of stearic acid, 1.5 parts of Vulcanization accelerator NOBS, 1 part of anti-aging agent 4010NA and 1 part of antioxidant RD, knead for 5 minutes, and discharge the rubber compound;

[0050] ③ Adjust the cavity temperature of the internal mixer to 110°C, put the rubber comp...

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Abstract

The invention relates to a modified natural rubber composite material, in particular to a modified natural rubber composite material with low rolling resistance and wet skid resistance and a preparation method thereof. The preparation method comprises the following steps: modifying silicon dioxide by using a silane coupling agent KH792 to prepare aminated silicon dioxide; then, grafting cysteine on solution polymerized styrene-butadiene rubber by using a sulfydryl-alkene click chemistry method to prepare carboxyl functionalized styrene-butadiene rubber; and carrying out amidation reaction on aminated silicon dioxide and carboxylated styrene butadiene rubber to form covalent bond connection, dispersing the prepared modified particles into distilled water, conducting blending with natural rubber, and conducting vulcanizing to prepare the modified natural rubber composite material. A rapid and effective mixing mode is adopted, the modified silicon dioxide can be well dispersed in a natural rubber matrix and can form covalent bond connection with the matrix, and the obtained natural rubber composite material has good wet skid resistance and low rolling resistance.

Description

technical field [0001] The invention relates to a modified natural rubber composite material, in particular to a wet-slip modified natural rubber composite material with low rolling resistance and a preparation method thereof. Background technique [0002] With the implementation of EU tire labeling law, the standard of green performance can be clarified, and then the research of green tires will be pushed to a climax. Green tires designed with new materials, new technologies, and new formulas, adhering to the concept of green manufacturing, have won people's favor with the characteristics of efficient application. The raw materials and production process of green tires follow the concept of green manufacturing, and the application process implements the scientific development concept of energy saving, emission reduction, and green environmental protection. It is a new type of tire that conforms to the sustainable development of socialization. Therefore, the development of ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08K9/06C08K9/04C08K3/36
CPCC08K9/06C08K9/08C08K3/36C08K2201/011C08L7/00
Inventor 张志毅张利召刘亚青赵贵哲
Owner ZHONGBEI UNIV
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