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A kind of polarized styrene thermoplastic elastomer and its preparation method and application

A thermoplastic elastomer and styrene-based technology, which is applied in the field of polarized styrene-based thermoplastic elastomer and its preparation, can solve the problems of few successful cases, improve material toughness, obtain raw materials, and improve impact resistance Effect

Active Publication Date: 2020-03-03
ZHEJIANG ZHONGLI SYNTHETIC MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the third method is more flexible, except for maleic anhydride grafted styrene thermoplastic elastomers, there are relatively few successful cases of large-scale industrial applications

Method used

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  • A kind of polarized styrene thermoplastic elastomer and its preparation method and application
  • A kind of polarized styrene thermoplastic elastomer and its preparation method and application
  • A kind of polarized styrene thermoplastic elastomer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] Preparation of halomethylated styrene thermoplastic elastomers:

[0028] Chloromethylation of Styrene Thermoplastic Elastomer (SEBS YH-501)

[0029] The formula and chloromethylation rate of SEBS are shown in Table 1. According to the formula in Table 1, SEBS YH-501 and tin tetrachloride were successively added to a three-necked flask filled with 250 parts of chloroform to control SEBS. The mass concentration does not exceed 10%, and the stirring is started. Then add 1,4-dichloromethoxybutane into the constant pressure dropping funnel, slowly drop 1,4-dichloromethoxybutane into the flask, control the reaction temperature not to exceed 20°C, and react for a period of time After the reaction, ethanol was added to the reaction system to precipitate chloromethylated SEBS, washed repeatedly with chloroform / ethanol for at least 3 times, and finally dried to obtain the product chloromethylated SEBS.

[0030] Table 1

[0031]

[0032] Bromomethylation of Styrene Thermopla...

Embodiment 1

[0038] A preparation method of polarized styrene thermoplastic elastomer, comprising the steps of:

[0039] (1) Preparation of toluene solution of halomethylated styrene thermoplastic elastomer: add halomethylated styrene thermoplastic elastomer to a flask containing 150 parts of toluene to prepare halomethylated styrene thermoplastic elastomer Toluene solution, the control mass concentration is not more than 10%;

[0040] (2) Preparation of an alkaline aqueous solution containing a phase transfer catalyst: at normal temperature, add metered tetrabutylammonium bromide to 2 parts of deionized water, and after all dissolve, add metered polyethylene glycol monomethyl ether, Metered sodium hydroxide, after all dissolving, obtains the alkaline aqueous solution containing phase transfer catalyst;

[0041] (3) adding the alkaline aqueous solution containing the phase transfer catalyst into the toluene solution of the halomethylated styrene thermoplastic elastomer, reacting at 60° C....

Embodiment 2

[0048] Add bromomethylated SEPS to a flask containing 100 parts of toluene to prepare a bromomethylated SEPS toluene solution, and control the mass concentration to not exceed 10%. Add measured amounts of cetyltrimethylammonium bromide (CTAB), measured amounts of polypropylene glycol monomethyl ether, and measured amounts of potassium hydroxide to 4 parts of deionized water to prepare an alkaline aqueous solution. Add the aqueous alkali solution to the bromomethylated SEPS toluene solution, and react at 40°C for 24 hours. After finishing, add methanol to precipitate the product and dry it to obtain polarized SEPS. The formula and contact angle of polarized modification of SEPS are shown in Table 4:

[0049] Table 4

[0050]

[0051] The polarized styrenic thermoplastic elastomer prepared by the present invention has remarkable effect, the contact angle is 30-90°, and because the elastomer contains both polyether molecular side chains and long fatty main chains, it has exce...

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Abstract

The invention relates to a polarized styrene-type thermoplastic elastomer as well as a preparation method and use thereof. The thermoplastic elastomer is prepared from the following raw materials in parts by weight: 1-30 parts of a halomethylated styrene-type thermoplastic elastomer, 0.1-10 parts of ether alcohol, 0.5-2 parts of a phase transfer catalyst and 0.5-8 parts of alkaline water. The preparation method has the beneficial effects that a preparation manner is simple, the raw materials are easily available, and the prepared polarized styrene-type thermoplastic elastomer is properly polarized; furthermore, and a molecular side chain of the elastomer is a polyether china segment, so that the elastomer has excellent hydrophily and lipophilicity; and by utilizing the polarized styrene-type thermoplastic elastomer as an interface compatilizer, the impact resistance of a composite material can be substantially improved, and the tenacity of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of modification of styrenic thermoplastic elastomers, and in particular relates to a polarized styrenic thermoplastic elastomer and its preparation method and application. Background technique [0002] Styrenic thermoplastic elastomer is an elastic material with soft and hard segments in the molecular chain, and has the characteristics of interpenetrating soft and hard phases in the material matrix. At room temperature, the hard segment acts as a cross-linking point to inhibit the flow of the soft segment, and the material exhibits high elasticity; at high temperature, the hard segment flows, and the material as a whole exhibits thermoplasticity. Such materials are widely used in cables, impact modification, medical equipment, adhesives, coatings and other fields. [0003] Common styrene-based thermoplastic elastomers are non-polar and difficult to be compatible with polar materials, which greatly limits th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F297/04C08F8/26C08G81/02C08L53/02C08L87/00
CPCC08F8/26C08G81/025C08L53/025C08L87/005C08F297/04
Inventor 蒋祥豹张爱明詹延辉
Owner ZHEJIANG ZHONGLI SYNTHETIC MATERIAL TECH CO LTD
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