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CM/EPDM blended rubber single-phase etching method and resolution improving method during rubber blended material microscopic structure expression

A technology of rubber blends and blended rubber, which is applied in the field of improving the resolution of the microstructure of rubber blends, can solve the problems of not being etched, and achieve the effect of improving the effect of not being easily etched

Active Publication Date: 2017-05-31
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fully vulcanized blends can only be swollen and cannot be etched due to the formation of a network structure.

Method used

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  • CM/EPDM blended rubber single-phase etching method and resolution improving method during rubber blended material microscopic structure expression
  • CM/EPDM blended rubber single-phase etching method and resolution improving method during rubber blended material microscopic structure expression
  • CM/EPDM blended rubber single-phase etching method and resolution improving method during rubber blended material microscopic structure expression

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Experimental program
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Embodiment 1

[0026] In this embodiment, the method for single-phase etching of CM / EPDM blend glue is as follows:

[0027] 1. CM glue and EPDM glue are blended according to the mass ratio of 50:50, the blending method is started, the roller distance is 2 mm, the roller temperature is 40 ℃, and the milling time is 5 minutes;

[0028] 2. The CM phase in the CM / EPDM blend rubber is vulcanized by the thiadiazole vulcanization system, and the EPDM phase is kept in an unvulcanized state; the crosslinking agent in the thiadiazole vulcanization system is ECHO·A, the dosage is 1phr, and the accelerator is Vanax 808, the dosage is 1phr; the vulcanization temperature is 170℃, and the vulcanization time is 10 minutes.

[0029] 3. Use the etchant xylene to etch the EPDM phase in the CM / EPDM blend glue from the blend system to form holes, leaving the unetched CM phase, and then use the solvent ethanol to remove the excess etchant It is extracted from the blended rubber and dried;

[0030] The ratio of ...

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Abstract

The invention discloses a CM / EPDM blended rubber single-phase etching method and a resolution improving method during rubber blended material microscopic structure expression. The CM phase in CM / EPDM blended rubber is vulcanized through a vulcanization system; the EPDM phase is maintained to be in an unvulcanized state; then, an etching agent is used for etching the EPDM phase in the CM / EPDM blended rubber away from a blending system to form holes; the un-etched CM phase is left; then, volatile solvents are used for extracting the excessive etching agents from the blended rubber; the operation is completed after drying. One phase in the blended rubber is vulcanized to form a reticular structure, so that the stable structure is maintained in the etching process; the erosion by the solvents is avoided; the unvulcanized phase is etched; the observable surface appearance is formed.

Description

technical field [0001] The invention relates to a method for single-phase etching of CM / EPDM blend rubber and a method for improving the resolution when characterizing the microstructure of the rubber blend. Background technique [0002] The methods for characterizing the microstructure of the two rubber blends usually include scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and phase contrast microscopy, among which scanning electron microscopy and transmission electron microscopy are the most widely used. Compared with scanning electron microscopy, transmission electron microscopy requires that the two phases in the blend have a large enough contrast difference for observation, and ultra-thin sections are required for solid samples, and the level of sample preparation directly affects the test results. [0003] When using transmission electron microscopy to observe the microscopic phase structure, the dyeing method is usually used to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08J3/24C08L23/28
Inventor 夏茹舒俊杰林瑞健陈鹏杨斌苏丽芬钱家盛苗继斌曹明郑争志
Owner ANHUI UNIVERSITY