A kind of synthetic method and application of unsaturated epoxy-chloroether rubber
The technology of a kind of epichlorohydrin rubber and synthesis method is applied in the application of epoxy-chloroether rubber with unsaturated double bonds, and the synthesis field of low crystallization and unsaturated epoxy-chloroether rubber can solve the problem of reaching It does not reduce the Payne effect, the polymer molecular weight distribution is not wide enough, and the filler oil is unevenly distributed, so as to achieve the effect of reducing stereoregularity, good elasticity and high strength
Active Publication Date: 2021-02-05
CHINA PETROLEUM & CHEM CORP +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0009] At present, the proportion of allyl glycidyl ether in the epoxy rubber of the prior art in the total polymerized monomer is 2% and 20%, and the number of double bonds in the polymer is either low or high, that is, when the ring When the double bond content of oxygen rubber is low, part of the epoxy rubber will not be vulcanized and cross-linked with diene synthetic rubber (such as SSBR), and the purpose of reducing the Payne effect will not be achieved; when the double bond of epoxy rubber When the number content is too high, the epoxy rubber will have part of its own vulcanization and cross-linking, and the composite rubber will form a partial phase separation, resulting in undesired defects such as uneven hardness of the vulcanized rubber, uneven distribution of filling oil in the vulcanized rubber, etc.
In addition, the molecular structure of the existing propylene oxide rubber is linear structure, the molecular weight distribution of the polymer is not wide enough, the self-adhesiveness is low, and the roll wrapping performance is not good; third, the polymer is composed of binary or ternary monomers, which is easy to produce crystal unit block
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0049] Place the 200mL two-necked ox-horn bottle replaced with dry nitrogen into an ice-water bath at -5~5°C, and then use a syringe to inject 110mL of 20% triethylaluminum, 23mL of ether, 1.6mL of water, and 10.2mL of acetylacetone. Pour it into a horn bottle (the above are the mass contents), and after 30 minutes of magnetic stirring, the catalyst complex can be completely reacted, wherein the aluminum content in the complex solution is 1.21mol / L.
Embodiment 2
[0051] Place the 200mL two-necked ox-horn bottle replaced with dry nitrogen into an ice-water bath at -5-5°C, and inject 110mL of 20% triethylaluminum, 23mL of ether, 2mL of water, and 20.5mL of acetylacetone into the In the horn bottle, after 30 minutes of magnetic stirring, the catalyst complex can be completely reacted, and the aluminum content in the complex solution is 1.12mol / L.
Embodiment 3
[0053] Place the 200mL two-necked ox-horn bottle replaced with dry nitrogen into an ice-water bath at -5-5°C, and inject 110mL of 20% triethylaluminum, 23mL of ether, 3mL of water, and 30.8mL of acetylacetone into the In the horn bottle, after 30 minutes of magnetic stirring, the catalyst complex can be completely reacted, and the aluminum content in the complex solution is 1.05mol / L.
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Abstract
The synthesis method and application of a kind of unsaturated epoxy-chloroether rubber disclosed by the present invention include allyl glycidyl ether, propylene oxide, ethylene oxide, and epoxy chloride in a trialkylaluminum-based catalytic system. Mixed monomers including propane and ethylene glycol diglycidyl ether are subjected to ring-opening copolymerization to obtain unsaturated epoxy-chloroether rubber; the unsaturated epoxy-chloroether rubber has high amorphous structure content, low crystallinity, The characteristics of good processing performance can be vulcanized by ethylene thiourea or sulfur to make vulcanized rubber products. The vulcanized rubber has high strength, good elasticity, excellent physical properties such as organic solvent resistance, low temperature resistance and high temperature resistance. Raw rubber can also be used for containing Synthetic glue with carbon-carbon double bond, such as SSBR, is used for modification.
Description
technical field [0001] The present invention relates to a synthesis method and application of unsaturated epoxy-ether chloride rubber, in particular to a method for synthesizing epoxy-ether chloride rubber with low crystallinity and unsaturated double bonds and its application in vulcanized rubber ; Belongs to the field of special rubber materials. Background technique [0002] The industrial production of epichlorohydrin rubber began in 1965, and the first producers were Goodrich and Hercules in the United States. The epichlorohydrin homopolymer (abbreviated as CHR or CO) comes out under the trade name "Hydrin100", and the approximately equimolar copolymer of epichlorohydrin and ethylene oxide (abbreviated as CHC or ECO) comes out under the trade name "Hydrin200". Hercules has marketed epichlorohydrin homopolymers and epichlorohydrin-ethylene oxide copolymers under the trade names "Herclar H" and "Herclor C" respectively. Zeon Corporation of Japan produces unsaturated cop...
Claims
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IPC IPC(8): C08G65/24C08G65/06C08G65/12C08L71/03C08K13/02C08K3/36
CPCC08G65/06C08G65/12C08G65/24C08G2650/58C08K3/36C08K13/02C08L71/03
Inventor 张建国佘振银宁朝晖蒋文英
Owner CHINA PETROLEUM & CHEM CORP