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Method for modifying elastomer by using click reaction of thiol-ene

A technology of olefinic click and elastomer, which is applied in the field of ultraviolet light cross-linked elastomers, can solve the problems of easy aging and strength to be improved, and achieve the effect of good mechanical properties, improved mechanical properties, and easy availability of raw materials

Inactive Publication Date: 2014-05-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the presence of isolated double bonds in its molecule, there are also disadvantages such as easy aging, and its strength still needs to be improved.

Method used

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  • Method for modifying elastomer by using click reaction of thiol-ene
  • Method for modifying elastomer by using click reaction of thiol-ene

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Experimental program
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Effect test

Embodiment 1

[0019] Tetrakis (3-mercaptopropionic acid) pentaerythritol ester and SBS are dissolved in tetrahydrofuran according to different ratios, add an appropriate amount of photoinitiator, wherein photoinitiator is 0.005 times of consumption of SBS, tetrakis (3-mercaptopropionic acid) pentaerythritol ester and SBS The mass ratio is 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 1, 2%,, after stirring evenly, it is cast into a film under light conditions. figure 1 is a graph of stress-strain curves for various proportions of material.

[0020] Table 1 shows the elongation at break and strength at break in tensile tests of various ratio materials.

[0021] Table 1

[0022]

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Abstract

The invention belongs to the technical field of chemical material preparation, and particularly relates to a method for modifying an elastomer by using click reaction of thiol-ene. The method is characterized in that isolate double bonds in an elastomer material are crosslinked with an elastomer compound system by using click chemistry of thiol-ene with the participation of polythiol organic molecules under an UV-irradiation condition so as to achieve the purpose of modifying the elastomer material. The method for modifying the elastomer is simple, easy in obtaining of raw materials and relatively low in cost. The obtained composite material has excellent mechanical property and can be widely applied.

Description

technical field [0001] The invention belongs to the technical field of chemical material preparation, and in particular relates to a method for ultraviolet light crosslinking elastomers. Background technique [0002] The molecular chains of the rubber can be cross-linked. When the cross-linked rubber is deformed by an external force, it has the ability to recover quickly, and has good physical and mechanical properties and chemical stability. Rubber is the basic raw material of the rubber industry and is widely used in the manufacture of tires, hoses, tapes, cables and other rubber products. But in the process of use, it needs to be vulcanized to improve the general structure of unvulcanized rubber such as strength. The vulcanization process is mostly treated with sulfur or peroxide, and these traditional vulcanization methods may have disadvantages such as releasing harmful substances. The ultraviolet light cross-linking method used in this patent is simple, easy, and poll...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08J3/28C08L53/02C08K5/37
Inventor 白静史子兴印杰
Owner SHANGHAI JIAO TONG UNIV