Preparation method of epoxidized solution polymerized styrene-butadiene rubber coating

A technology of solution polymerization of styrene-butadiene rubber and epoxidation, which is applied in the direction of rubber derivative coatings, polyamide coatings, coatings, etc., can solve the problems of compatibility differences, unstable coating systems, etc., to reduce impact, solve Effects of paint system instability

Inactive Publication Date: 2015-04-22
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above technologies have the problem of unstable coating system caused by the difference in compatibility between epoxy resin and rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The preparation of epoxidized solution-polymerized styrene-butadiene rubber, the preparation route is as follows:

[0014] (a)

[0015] (b)

[0016] The present invention can be realized by following measures:

[0017] In a container with a stirrer, a reflux condenser, a thermometer and a constant pressure dropping funnel, add the formulated amount of SSBR and an organic solvent (cyclopentane or toluene), stir at room temperature, and heat to the reaction temperature after the SSBR is completely dissolved , add the formula amount of formic acid, drop the formula amount of hydrogen peroxide at a rate of 1ml / min, control the reaction temperature, after the reaction is completed, wash the epoxidized soluble polystyrene-butadiene rubber (ESSBR) with distilled water until neutral , When cyclopentane is used as solvent, evaporate cyclopentane at 70°C; when toluene is used as solvent, precipitate ESSBR with ethanol, and dry it in a vacuum oven at room temperature...

Embodiment 1

[0021] Add 6.034g of SSBR and 85.0ml of toluene into a 500ml container with a stirrer, reflux condenser, thermometer and constant pressure dropping funnel, stir at room temperature, heat to 50°C after SSBR is completely dissolved, add 3.21ml of formic acid, Add 7.64ml of hydrogen peroxide dropwise at a rate of 1ml / min, react at 50°C for 2 hours, wash ESSBR with distilled water until neutral, precipitate ESSBR with ethanol, and dry it in a vacuum oven at room temperature to constant weight. After drying, the epoxy degree was measured to be 32.68%.

Embodiment 2

[0023] Add 120.0g SSBR and 1440ml cyclopentane into a 2000ml container equipped with a stirrer, reflux condenser, thermometer and constant pressure dropping funnel, stir at room temperature, heat to 40°C after SSBR is completely dissolved, add 63.8ml formic acid , add 76.0ml of hydrogen peroxide dropwise at a rate of 3ml / min, react at 40°C for 2 hours, wash ESSBR with distilled water until neutral, evaporate cyclopentane at 70°C, and dry in a vacuum oven at room temperature To constant weight, the epoxy degree measured after drying is 14.73%.

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Abstract

The invention discloses a preparation method of an epoxidized solution polymerized styrene-butadiene rubber coating. The preparation method comprises the following steps: carrying out epoxidizing modification on solution polymerized styrene-butadiene rubber by virtue of H2O2 and HCOOH peracid system to prepare an epoxidized solution polymerized styrene-butadiene rubber, dissolving the synthesised epoxidized solution polymerized styrene-butadiene rubber in a certain amount of solvent, placing the mixed solvent in a sand mill together with pigments and fillers, an antiager and the like, and grinding and dispersing, discharging when the fineness reaches 20mu m to obtain the component A of the epoxidized solution polymerized styrene-butadiene rubber coating, dissolving polyamide resin in a certain amount of a solvent, adding a curer and a curing accelerator, placing in the sand mill for grinding and dispersing, discharging when the fineness reaches 20mu m to obtain the component B of the epoxidized solution polymerized styrene-butadiene rubber coating, mixing the component A and the component B of the epoxidized solution polymerized styrene-butadiene rubber coating, uniformly stirring and ageing, and then coating a plate with the epoxidized solution polymerized styrene-butadiene rubber coating, so that the performances of the coating can be detected.

Description

technical field [0001] The invention relates to a preparation method of epoxy-solution-polymerized styrene-butadiene rubber coating, which belongs to the technical field of polymer chemistry, polymer coating and its composition. Background technique [0002] Solution-polymerized styrene-butadiene rubber (SSBR) has good comprehensive performance and superior performance. The introduction of epoxy groups in SSBR can increase the polarity of SSBR molecular chains, enhance the interaction with fillers, and improve the SSBR rubber matrix and complementary properties. The compatibility of strong agents and the introduction of epoxy groups greatly improve the adhesion of solution-polymerized styrene-butadiene rubber to substrates. The epoxy group has strong reactivity, which provides convenience for further modification of SSBR, and can provide solution polystyrene butadiene rubber coatings with room temperature curing reaction characteristics. The epoxidation methods of solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D115/00C09D177/00C09D7/12C08C19/06
CPCC08K2003/2241C09D115/00C08C19/06C09D7/61C09D7/63C09D7/65
Inventor 郭军红常洲杨保平崔锦峰包雪梅周应萍谢吉仁赵秋萍慕波李敏睿郭永亮张鹏中
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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