Formula and preparation method of chloroprene rubber for chloroprene rubber coated fabric splicing and enveloping

Abstract

The invention discloses a formula and a preparation method of chloroprene rubber for chloroprene rubber coated fabric splicing, belongs to the field of rubber, and integrates the processes of internal mixing, open mixing, batching out and film vulcanizing. According to the method, DETU (diethyl thiourea) is adopted as a vulcanization accelerator for chloroprene rubber and butyl rubber, and increases the vulcanizing speed of sizing material while retaining the basic mechanical performance of the sizing material; a DOS (dioctyl sebacate) polar plasticizer is adopted and can be well compatible with the chloroprene rubber; and various physical performance indexes of the product meet the standard requirement, and particularly, the appearance is improved greatly.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a formula and a production method of neoprene rubber for splicing covers of neoprene tapes. Background technique [0002] Many engineering tapes (such as dam cloth, hovercraft apron, etc.) have a large width and require several pieces of tape to be spliced ​​and formed. The splicing seams need to be covered with a layer of rubber for secondary vulcanization of the cover, so that the appearance of the splicing parts is smooth and smooth, and it plays a better protective role. However, if the vulcanization system of the cover formula is unreasonable, the setting speed will be slow, which will easily cause the rubber on the edge of the cover at the splicing part to be honeycombed; if the softening system of the cover formula is unreasonable, the glue will be sticky or have poor fluidity, which will easily lead to failure to release the film or Raised cover edge at seams. Contents ...

AI Technical Summary

Problems solved by technology

However, if the vulcanization system of the cover formula is unreasonable, the setting speed will be slow, which will easily cause the rubber on the edge of the cover at the splicing part to be honeycombed; if the softening system of the cover formula is unreasonable, the glue will be sticky or have poor fluidity, which will easily lead to failure to release the film or Raised cover edges at seams

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