A kind of polymer containing polysulfide structure and preparation method thereof

A polysulfide and polymer technology, applied in the field of polymers containing polysulfide structure and its preparation, can solve the problems of reducing production process safety, loss of raw materials, long reaction time, etc., and achieve improved anti-vulcanization reversion performance , good repeatability, simple and easy preparation process
CN103788372BActive Publication Date: 2016-01-20BEIJING RED AVENUE INNOVA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING RED AVENUE INNOVA
Publication Date
2016-01-20

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Abstract

The invention provides a polymer containing an ether polysulfide structure and a safe and efficient preparation method thereof. According to the preparation method of the polymer containing the ether polysulfide structure, organic thiosulfate and sodium sulfide serve as raw materials and carry out homogeneous reaction in an aqueous solution or a mixed solvent of a water-soluble organic solvent and water so as to obtain a polymer containing an ether polysulfide structure, wherein a molecular structure of the polymer comprises a plurality of alkyl sulfide chain segments. The polymer containing the ether polysulfide structure can be used as a sulfurizing reagent and added in a rubber material; the alkyl sulfide in the polymer participates in a sulfuration reaction process of the rubber and can effectively carry out cross-linking reaction with the rubber material to form stable monosulphur bonds or disulphur bonds; and meanwhile, flexible alkyl chains are insertd into macromolecules of the rubber, so that anti-reversion performance of the rubber material is improved.
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Description

technical field

[0001] The invention belongs to the field of processing aid materials for the rubber industry, and in particular relates to a polymer containing a polysulfide structure and a preparation method thereof. Background technique

[0002] Sulfur is the most commonly used vulcanizing agent for unsaturated rubbers such as natural rubber (NR), butadiene rubber (BR) and styrene-butadiene rubber (SBR). When sulfur vulcanizes rubber, sulfur forms single-sulfur bonds (bond energy 227KJ / mol), disulfide bonds (bond energy 167KJ / mol) and polysulfide bonds (bond energy 115KJ / mol) between rubber macromolecules, and also generates internal macromolecules. monosulfide or polysulfide bonds. Compared with polysulfide bonds, monosulfide bonds and disulfide bonds have greater energy, better heat resistance and aging resistance, but due to the shorter length of the sulfur chains of monosulfide bonds and disulfide bonds, its tensile properties, Poor fatigue resistance and flexural p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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