Rubber-blended macromolecular compatibilizer, preparation method and application thereof

A technology of macromolecules and compatibilizers, applied in the field of rubber combined with macromolecular compatibilizers, can solve the problems of poor physical and mechanical properties, thermodynamic incompatibility, and poor compatibility of vulcanizates, and achieve good compatibilization effect, The effect of many activation fulcrums, simple and pollution-free synthesis process

Inactive Publication Date: 2019-05-10
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, FKM and MVQ have poor compatibility and belong to thermodynamically incompatible systems.
If simple mechanical blending, the blend will have a serious phase separation phenomenon, and after the blend is vulcanized, the physical and mechanical properties of the vulcanizate will be very poor

Method used

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  • Rubber-blended macromolecular compatibilizer, preparation method and application thereof
  • Rubber-blended macromolecular compatibilizer, preparation method and application thereof
  • Rubber-blended macromolecular compatibilizer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The raw materials in this embodiment are: 100 parts by mass of FKM raw rubber, 100 parts by mass of MVQ raw rubber, and the vulcanized small material of FKM rubber includes MgO3%, Ca(OH) 2 6%, stearic acid 1%, MVQ rubber vulcanization small material includes fumed white carbon black 20%, dicumyl peroxide (DCP) 6%, auxiliary vulcanization agent TAIC 3%.

[0032] This example is to vulcanize FKM and MVQ without adding compatibilizer and blend rubber. The specific implementation steps are as follows:

[0033] (1) Add FKM raw rubber to the open mill, adjust the roller distance to 2mm, add fluorine rubber vulcanization small materials after wrapping the rolls, make triangular bags 3 times on the left and right sides after thinning, and release the pieces after the materials are evenly eaten to obtain fluorine rubber master Rubber mixing a.

[0034] (2) Add MVQ raw rubber to the open mill, adjust the roll distance to 2mm, add silicone rubber vulcanized small materials after ...

Embodiment 2

[0039] The raw material composition of the macromolecule compatibilizer in this embodiment is: 100 parts by mass of FKM raw rubber, 5 parts by mass of grafting agent A500CS terminal vinyl silicone oil, 0.5 parts by mass of lubricant B stearic acid, initiator C diperoxide 0.5 parts by mass of cumene.

[0040]The preparation method of rubber and macromolecule compatibilizer is as follows in the present embodiment:

[0041] 1. Add FKM raw rubber, grafting agent A, lubricant B, and initiator C into the open mill, adjust the roll distance to 2 mm, make triangular bags on the left and right sides of the thin pass three times, and discharge to obtain mixture a;

[0042] 2. Put the mixture a obtained in step 1 into the internal mixer, and then banbury at 160°C and 60 rad / min for 10 minutes, then discharge to obtain the primary product of the macromolecule compatibilizer;

[0043] 3. Cut the primary product of the macromolecule compatibilizer obtained in step 2 into pieces and put it ...

Embodiment 3

[0046] The raw material composition of the macromolecular compatibilizer in this embodiment is: 100 parts by mass of FKM raw rubber, 5 parts by mass of grafting agent A1000CS terminal vinyl silicone oil, 0.5 parts by mass of lubricant B stearic acid, initiator C diperoxide 0.5 parts by mass of cumene.

[0047] The preparation method of rubber and macromolecule compatibilizer is as follows in the present embodiment:

[0048] 1. Add FKM raw rubber, grafting agent A, lubricant B, and initiator C into the open mill, adjust the roll distance to 2 mm, make triangular bags on the left and right sides of the thin pass three times, and discharge to obtain mixture a;

[0049] 2. Put the mixture a obtained in step 1 into the internal mixer, and then banbury at 160°C and 60 rad / min for 10 minutes, then discharge to obtain the primary product of the macromolecule compatibilizer;

[0050] 3. Cut the primary product of the macromolecule compatibilizer obtained in step 2 into pieces and put ...

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Abstract

The invention discloses a rubber-blended macromolecular compatibilizer, a preparation method and an application thereof. The rubber-blended macromolecular compatibilizer is a macromolecular compatibilizer FKM-g-(SiR)n acquired by taking fluororubber as a main chain and grafting with long-chain vinyl silicone oil through a high-temperature thermodynamic grafting process. The rubber-blended macromolecular compatibilizer disclosed by the invention can be used as the compatibilizer for blending fluororubber and silicone rubber, has a compatibilization effect on the blending of fluororubber and silicone rubber, and can be used for preparing vulcanized products with excellent physical and mechanical properties and oil resistance.

Description

technical field [0001] The invention relates to a macromolecule compatibilizer for rubber and its preparation method and application. The compatibilizer of the present invention can be used as a compatibilizer when the fluororubber and the silicone rubber are blended to improve the compatibility of the fluororubber and the silicone rubber. Background technique [0002] Fluorine rubber (FKM) refers to a synthetic polymer elastomer with fluorine atoms attached to the carbon atoms of the main chain or side chain. The hydrogen atoms on the carbon molecular chain are replaced by fluorine atoms. The most volatile element has the highest degree of oxidation, and its polymer is not easy to be oxidized and decomposed. Therefore, the chemical stability of fluororubber is very good, and it has high temperature resistance, oil resistance, aging resistance, weather resistance, ozone resistance, medium dose radiation resistance, and various resistance. Chemical erosion, resistance to sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F299/02C08K5/09C08K3/22C08K3/36C08K5/14C08K13/02C08L27/12C08L83/04C08L87/00C08L55/00
Inventor 钱家盛汪恒夏茹章于川曹明苗继斌陈鹏杨斌
Owner ANHUI UNIVERSITY
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