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Preparation and application of a macromolecular silane coupling agent for EPDM rubber

A technology of molecular silane coupling agent and EPDM rubber, which is applied in the field of functional polymer materials, can solve the problems of unsatisfactory modification effect and few effective groups, so as to improve interfacial compatibility and mechanical properties Effect

Active Publication Date: 2017-01-25
山东元禾新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silane coupling agent is a compound with two functional groups of different chemical properties in the molecule, which can form a strong chemical bond between the inorganic filler and the polymer matrix, improve the interface properties of the material, and significantly improve the mechanical properties of the composite material. When using a small molecule coupling agent to treat the surface of the filler, because it is a small molecule, there are few effective groups, and the modification effect is not ideal.

Method used

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  • Preparation and application of a macromolecular silane coupling agent for EPDM rubber
  • Preparation and application of a macromolecular silane coupling agent for EPDM rubber
  • Preparation and application of a macromolecular silane coupling agent for EPDM rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 8g of EPDM in 100ml of toluene and add it to a dry four-necked flask, then add 3.75g of methyl methacrylate and 2.5g of γ-methacryloxypropyl trimethoxysilane. Stirring was continued at 90°C, and nitrogen gas was bubbled for 30 minutes to obtain a mixed system of reactants;

[0022] Then the initiator benzoyl peroxide of 0.1425g is dissolved in the toluene of 30ml and stirs, slowly be added dropwise in the above-mentioned reactant mixed system (continuous stirring reactant mixed system in the process of dropping, and the reactant mixed system The temperature was kept at 90°C), and the time of dropping was controlled at 30min. After the dropwise addition was completed, stirring was continued at 90°C for 16 hours. After the reaction was completed, it was cooled to room temperature, precipitated with excess methanol, filtered, and obtained Crude product of molecular silane coupling agent.

[0023] The macromolecular silane coupling agent crude product obtained abo...

specific Embodiment 2-5

[0033] The differences between the synthesis process conditions of the macromolecular coupling agent and Example 1 are shown in Table 2, and the rest of the preparation process is the same as that of Example 1. The process for surface-treating silica with the macromolecular coupling agent is the same as in Example 1, and the preparation process for the surface-treated silica-filled EPDM composite material is the same as in Example 1. The resulting mechanical properties are shown in Table 3

[0034] Table 2

[0035]

[0036] table 3

[0037]

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Abstract

The invention relates to preparation of a novel silane macromolecular coupling agent. The initiator benzoyl peroxide initiates graft polymerization reaction of ethylene propylene diene monomer rubber (EPDM), methyl methacrylate (MMA), and gamma-methacryloxy propyl trimethoxyl silane (KH-570). By controlling the reaction conditions, a series of macromolecular silane coupling agents with different grafting ratios can be prepared so as to reach the purpose of adjusting the strength and modulus of the system and realize control and optimization of the interface structure between an inorganic filler and a matrix material. The invention is conducive to optimizing design of macromolecular coupling agents, thus better improving the comprehensive properties of the composite material.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, in particular to the preparation and application of a macromolecular silane coupling agent suitable for rubber products. Background technique [0002] Composite material is a multiphase solid material composed of two or more substances with different physical and chemical properties. Compared with traditional metal materials, composite material has high specific stiffness, high specific strength, fatigue resistance, Corrosion resistance, easy molding and other advantages. A major factor that determines the physical and mechanical properties of composite materials is the compatibility between the inorganic filler and the matrix. In order to improve the compatibility between the polymer matrix and the inorganic filler, a silane coupling agent is often used to treat the surface of the inorganic filler to improve the composite. The interface of the material achieves the purpose of improvi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/06C08F220/14C08F230/08C08L23/16C08K9/06C08K3/36
Inventor 张洪文张杨姜彦任玉荣刘巧云俞强
Owner 山东元禾新材料科技股份有限公司
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