Modified rice hull ash-silicone rubber composite material and preparation method thereof

A composite material and technology of rice husk ash, applied in the field of modified rice husk ash-silicon rubber composite material and its preparation, can solve the problem of not finding a suitable development and utilization way, achieve good self-leveling, reduce carbon element content, The effect of improving purity

Inactive Publication Date: 2016-03-16
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There is a huge amount of rice husk (more than 40 million tons per year in my country), and no suitable way of developmen...

Method used

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  • Modified rice hull ash-silicone rubber composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: A kind of modified rice husk ash-silicone rubber composite material

[0032] According to 107 base rubber: crosslinking agent: chain extender: tackifier: plasticizer: modified rice husk ash: catalyst is composed in a ratio of 100:5:0.2:1:20:15:0.3 by weight.

[0033] Among them, the crosslinking agent is methyl tributyl ketoxime silane, the chain extender is methyl vinyl amido silane, the catalyst is octyl tin maleate, the plasticizer is non-reactive dimethyl silicone oil, and the tackifier for the KH550.

Embodiment 2

[0034] Embodiment 2: A kind of modified rice husk ash-silicone rubber composite material

[0035] According to 107 base rubber: crosslinking agent: chain extender: tackifier: plasticizer: modified rice husk ash: catalyst is composed in a ratio of 100:1:0.2:1:20:30:0.3 by weight.

[0036] Among them, the cross-linking agent is vinyl tributyl ketoxime silane, the chain extender is dimethyl hydroxylamino silane, the catalyst is dibutyl tin laurate, the plasticizer is MDT type silicone oil, and the tackifier is KH560.

Embodiment 3

[0037] Embodiment 3: A kind of modified rice husk ash-silicone rubber composite material

[0038] According to 107 base glue: crosslinking agent: chain extender: tackifier: plasticizer: modified rice husk ash: catalyst is composed in the ratio of 100:5:0.3:3:50:20:0.3 by weight.

[0039] Among them, the cross-linking agent is methyl tributylketoxime silane; the chain extender is methyl vinyl amido silane and dimethyl hydroxylamino silane, the ratio of the two is 1:1; the catalyst is octyltin maleate; The plasticizer is non-reactive simethicone, and the tackifier is KH570.

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Abstract

The invention discloses a modified rice hull ash-silicone rubber composite material which consists of 107 base rubber, a cross-linking agent, a chain expander, modified rice hull ash, a catalyst, a plasticizer and an adhesive, wherein the modified rice hull ash is prepared by: 1) performing acid pickling pretreatment on rice hulls before calcining; 2) calcining the pretreated rice hulls at low temperature and high temperature in sequence; and 3) grinding, grading and performing surface treatment on the calcined rice hull ash. The invention further discloses a preparation method of the composite material. The rice hull ash prepared by using the method disclosed by the invention in a modification manner can be relatively well used for preparing the modified rice hull ash-silicone rubber composite material, and moreover, the prepared composite material is low in modulus, good in elongation performance and good in self-leveling property, and can be widely used in the fields of traffic and buildings.

Description

technical field [0001] The technical field of the sealing material of the present invention specifically relates to a modified rice husk ash-silicone rubber composite material and a preparation method thereof. Background technique [0002] There is a huge amount of rice husk (more than 40 million tons per year in my country), and no suitable way of development and utilization has been found so far. It has become agricultural waste in many places and exerts great pressure on the environment. Therefore, seeking a suitable outlet for rice husk has become an increasingly urgent issue. At present, an important application of rice husk is to burn rice husk ash, which is mainly used as an admixture for concrete materials or to prepare silica. [0003] During the processing of rubber products, a certain amount of filler must be added to improve the mechanical strength of rubber products. Common fillers include calcium carbonate, white carbon black and other reinforcing fillers. S...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/06C08K9/02C08K3/36C08K3/04C08K5/5465
CPCC08L83/04C08K2201/003C08K2201/011C08K2201/014C08L2205/025C08K13/06C08K9/06C08K3/36C08K3/04C08K5/5465
Inventor 刘杰胜董莪邢珊珊余媛媛刘肖凡徐伟琦涂妮左洁
Owner WUHAN POLYTECHNIC UNIVERSITY
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