Silicone resin flexible heat shrinkable sleeve and manufacture method thereof

Abstract

The invention relates to a silicone resin flexible heat shrinkable sleeve and a manufacture method thereof, solving the disadvantages of higher rigidity and poorer heat stability of the traditional silicone resin flexible heat shrinkable sleeve and acid release of raw materials in the process to difficultly manufacture a large diameter silicone resin flexible heat shrinkable sleeve in the traditional method. The silicone resin flexible heat shrinkable sleeve is prepared by methyl vinyl silicone raw rubber, ethylene-methyl methacrylate copolymer, antioxidant and lubricant. The method comprisesthe following step of preparing the silicone resin flexible heat shrinkable sleeve by mixing milling the materials under high temperature, extruding the materials to form a tubular object and treating the tubular object through processes of electronic radiation crosslinking, expansion, setting and the like. The large diameter silicone resin flexible heat shrinkable sleeve has the advantages of good heat stability, low rigidity and low-temperature shrinkage, can be used for places of environmental friendly flexible heat shrinkable sleeves requiring low-temperature shrinkage and has good industrialization prospect. The method has the advantages of simpleness and easy operation.

Description

technical field [0001] The invention relates to a manufacturing method of a silicone resin heat-shrinkable tube. Background technique [0002] Generally, rubber heat shrinkable tubing is made from a blend of thermoplastic resin and rubber. For example, the polyethylene / ethylene-vinyl acetate copolymer / EPDM rubber blend radiation crosslinking heat shrinkable material of Chinese patent CN1257090A, the trans polyisoprene / ethylene-vinyl acetate copolymer of Chinese patent CN1357572A Mixture radiation crosslinking heat shrinkable material, ethylene-vinyl acetate copolymer / silicone rubber blend radiation crosslinkable heat shrinkable material of Chinese patent CN1760997A, etc. However, the hardness of these cross-linked heat-shrinkable materials is relatively high, and the acid released by the thermoplastic resin ethylene-vinyl acetate copolymer in the raw material blend has a certain corrosive effect on the equipment, and the sour taste affects people's health and is not conduci...