Neoprene composition suitable for micro wave curing process, and preparation method for flexible pipe

Abstract

The invention provides a neoprene composition suitable for a micro wave curing process, and a preparation method for a flexible pipe. The neoprene composition comprises the following components in part by mass: 100 parts of neoprene DCR66, 50 to 58 parts of fast extrusion carbon black, 15 to 25 parts of pottery clay, 24 to 32 parts of trioctyl trimellitate, 10 to 14 parts of white factice WF-150, 12 to 20 parts of absorbent EC-G, 1.0 to 2.0 parts of WB222, 1.2 to 1.8 parts of N,N'-diethyl thiourea, 4.0 to 6.0 parts of magnesium oxide, and 7.0 to 9.0 parts of zinc oxide. By using the neoprene composition, the flexible pipe in which no micropore is formed, and which has the bubble-free surface, and is high in high-temperature resistance and oil resistance can be prepared by the micro wave curing process, and the aims of simplifying processes, saving manpower, improving production efficiency and reducing cost can be fulfilled.

Description

technical field [0001] The invention relates to a chloroprene rubber composition and a hose prepared by using a microwave vulcanization process using the chloroprene rubber composition. Background technique [0002] At present, the neoprene rubber hoses commonly used in the world and at home are all vulcanized and formed by steam vulcanization tanks under high temperature and high pressure conditions. In this method, a straight extruder is used to extrude a semi-finished rubber hose, and the release agent is sprayed on the surface, and then cut according to the specified length. The cut semi-finished rubber hose is stacked together and parked for 4 to 8 hours. The single layer is placed on the metal tray, and finally the metal tray is pushed into the steam vulcanization tank, vulcanized and formed under high temperature and high pressure conditions, and the formed rubber hose is cleaned with a cleaning agent. The method has gone through eight processes of extrusion-spraying...

AI Technical Summary

Problems solved by technology

Microwave vulcanization process, the product is vulcanized and molded under high temperature and normal pressure conditions, the vulcanization medium is hot air, micropores are prone to appear inside the hose, and bubbles are prone to appear on the outer surface, which affects the performance and appearance of the product

The neoprene composition formula of the original steam vulcanization tank vulcanization process using the microwave vulcanization process cannot meet the requirements, and a new design of the neoprene composition is required to solve the problem of micropores inside the microwave vulcanization hose and the bubbles on the outer surface , while having the same material performance and appearance as the original process, it can simplify the process, save manpower, improve production efficiency and reduce costs