Unsaturated anhydride modified liquid nitrile rubber flexibilizer for unsaturated resin and preparation method thereof

A liquid nitrile rubber and acid anhydride modification technology, applied in the field of unsaturated acid anhydride modified liquid nitrile rubber toughening agent, can solve the problems of decreased strength and modulus, water resistance, aging resistance and fatigue resistance, etc. Achieve uniform and stable dispersion and reactivity

Active Publication Date: 2012-07-04
江门市瑞祥复合材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the contradiction between high-strength and high-performance products and high impact resistance and fatigue resistance is particularly prominent. Usually, the flexibility and frost resistance of the base resin are improved by introducing a flexible polymer polyol structure or mixing in flexible components. In this way, the impact resistance of the material can only be unilaterally improved, while its strength and modulus will be greatly reduced.
At the same time, the water resistance, aging resistance and fatigue resistance of materials and products will also be reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The unsaturated acid anhydride modified liquid acrylonitrile-butadiene rubber toughening agent for unsaturated resin described in embodiment 1 of the present invention is made up of unsaturated anhydride-modified liquid acrylonitrile-butadiene rubber addition polymer and ethylenically unsaturated monomer; The unsaturated acid anhydride modified liquid nitrile rubber addition polymer consists of catalyst, unsaturated anhydride and liquid nitrile rubber. The unsaturated acid anhydride is an unsaturated cyclic acid anhydride, and this embodiment uses maleic anhydride; the liquid nitrile rubber is a liquid nitrile rubber with a hydroxyl-terminated structure; the catalyst is a quaternary ammonium halide, and this embodiment uses benzyl triethyl chloride Ammonium. As the ethylenically unsaturated monomer, a styrene unsaturated monomer is used.

[0024] In addition, this embodiment 1 also relates to the technical scheme of the preparation method of the unsaturated acid anhydr...

Embodiment 2

[0031] Present embodiment 2 is modified on the basis of embodiment 1 to the preparation method of unsaturated acid anhydride modified liquid nitrile rubber toughening agent for unsaturated resin, specifically as follows:

[0032] Use an electronic balance to weigh qualified liquid nitrile rubber, preheat it at 80°C and add it to the reaction flask; then weigh maleic anhydride according to the mass ratio of maleic anhydride to liquid nitrile rubber of 1:10, and press the catalyst Weigh benzyltriethylammonium chloride at a mass ratio of 1:20 to liquid nitrile rubber and add it to the reaction flask. React in an oil bath at a temperature of 80°C to 150°C for 12 hours to obtain an addition polymer, lower the temperature, then weigh styrene according to the mass ratio of styrene to addition polymer of 1:3, and add it to the addition polymer , kept stirring at a temperature of 70°C for 6 hours, and the double bond content of the polymer mixture was detected to be 3.67%, and the mole...

Embodiment 3

[0034] Present embodiment 3 is to modify the preparation method of the unsaturated acid anhydride modified liquid nitrile rubber toughening agent for unsaturated resin on the basis of embodiment 1, as follows:

[0035]Weigh qualified liquid nitrile rubber with an electronic balance, preheat it at 80°C and add it to the reaction flask; then weigh maleic anhydride according to the mass ratio of maleic anhydride to liquid nitrile rubber of 1:10, and then press catalyst and The mass ratio of liquid nitrile rubber is 1:20. Weigh benzyltriethylammonium chloride and add it to the reaction flask. React in an oil bath at a temperature of 80°C to 150°C for 16 hours to obtain an addition polymer, lower the temperature, then weigh styrene according to the mass ratio of styrene to addition polymer 30:70, and add it to the addition polymer , insulated and stirred at 80°C for 7 hours, the double bond content of the polymer mixture was detected to be 3.57%, and the molecular weight was 43500....

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PUM

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Abstract

The invention discloses unsaturated anhydride modified liquid nitrile rubber flexibilizer for unsaturated resin, wherein the flexibilizer consists of unsaturated anhydride modified liquid nitrile addition polymer and alkene unsaturated monomer which are respectively 70%-95% and 5%-30% in percentage by weight. Meanwhile, the invention further discloses a preparation method of the unsaturated anhydride modified liquid nitrile rubber flexibilizer for the unsaturated resin. By different unsaturated anhydride and hydroxyl terminated butyl nitrile rubber as well as different alkene unsaturated monomers, a plurality of kinds of polymer materials capable of being dispersed and dissolved in the unsaturated resin and increasing the flexibility can be prepared. According to the characteristics of the unsaturated anhydride and the alkene unsaturated monomers, the flexibilizer can be applied to unsaturated polyester resins, vinyl esters and coatings thereof and can also applied to the processes of pasting glass fiber reinforced plastics by hand on composite materials, pultrusion, winding, centrifugal casting, mould pressing and liquid vacuum forming as well as in the field materials.

Description

technical field [0001] The present invention relates to a kind of unsaturated acid anhydride modified liquid nitrile rubber toughening agent and preparation method thereof for unsaturated resin, especially relate to a kind of liquid nitrile rubber macromolecular main chain with terminal hydroxyl structure to introduce unsaturated acid anhydride chain Section, synthetic unsaturated acid anhydride modified liquid nitrile rubber toughening agent with strong lipophilicity, good flexibility and good compatibility with unsaturated resin system and its preparation method. Background technique [0002] With the continuous advancement of composite material products and technology, unsaturated resin has been widely used in various fields of economic and social life, and is deepening and playing an increasingly important role. Among them, the contradiction between high-strength and high-performance products and high impact resistance and fatigue resistance is particularly prominent. Us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/02C08C19/38C08C19/28
Inventor 吴德山
Owner 江门市瑞祥复合材料研究院有限公司
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