Low-temperature-resistant pneumatic hammer tube and production process thereof

Abstract

The invention relates to the field of high polymer materials, in particular to a low-temperature-resistant pneumatic hammer tube which comprises a PVC inner layer and a PVC outer layer, and the PVC outer layer is prepared from, by weight, HG-2500 type PVC; a tackifying resin; a first plasticizer; DOS cold-resistant plasticizer; glucuronolactone; a first stabilizer; a wear-resistant agent; a first lubricant. The invention discloses a production process of the low-temperature-resistant pneumatic hammer tube. The production process comprises the following steps: S1, preparing the PVC inner layer; S2, winding a network cable; S3, preparing a tackifying layer; S4, preparation of the PVC outer layer; S5, piercing. Gluconolactone and DOS cold-resistant plasticizer are compounded for use, so that the cold resistance of the PVC inner layer is remarkably improved, the PVC inner layer is not prone to embrittlement and cracking at low temperature, meanwhile, the low-temperature toughness of the PVC inner layer is improved, and workers can conveniently install the PVC inner layer at low temperature.

Description

technical field

[0001] The present application relates to the technical field of rubber hoses, more specifically, it relates to a low-temperature-resistant wind gun hose and its production process. Background technique

[0002] Air gun tube is a kind of tubular rubber product used to transport gas, liquid, slurry or granular materials. It is composed of inner and outer rubber layers and a skeleton layer. The material of the skeleton layer can be cotton fiber, various synthetic fibers, carbon fiber or asbestos, steel wire, etc.

[0003] The material of the wind gun tube is usually PVC (polyvinyl chloride), because the wind gun tube needs to be bent during installation, so the wind gun tube is usually made of flexible PVC material. When the air bubble tube is transporting materials, it is often exposed outdoors. The weather in some areas is bad, and it is in a low temperature state all the year round, which makes the air gun tube harden, embrittle, and crack at low temperatur...