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

A technology of low temperature resistance and wind cannon, applied in the direction of hoses, pipes, tubular objects, etc., can solve the problems of poor flexibility of wind cannon tubes, achieve good compatibility, improve low temperature resistance, and increase PVC cold resistance.

Active Publication Date: 2021-04-27
浙江新洁新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the problem of poor flexibility of the air gun tube at low temperature, the application provides a low temperature resistant air gun tube and its production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0056] Preparation of polyhydric phenolic resin:

[0057] Weigh phenol and formaldehyde into a container, the molar ratio of phenol and formaldehyde is 1:2, adjust the pH value to 9.4 with sodium hydroxide, raise the temperature to 60°C for 8 hours, wash with acetone to prepare polyhydroxyphenolic resin.

preparation example 2

[0059] The difference from Preparation Example 1 is that sodium hydroxide is used to adjust the pH to 7.3.

preparation example 3

[0061] The difference from Preparation Example 2 is that sodium hydroxide is used to adjust the pH to 11.6.

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B32B27/30B32B27/06B32B27/22B32B27/18B32B7/12B32B37/12B32B38/00C08L27/06C08L61/06C08L23/06C08K5/11C08K5/098C08K5/1535F16L11/08
CPCB32B27/304B32B27/08B32B27/22B32B27/18B32B7/12B32B37/1284B32B38/0012C08L27/06F16L11/081C08L2203/18C08K2201/014C08L2205/03B32B2250/24B32B2307/558B32B2597/00C08L61/06C08L23/06C08K5/11C08K5/098C08K5/1535
Inventor 高云方王勇豪沈小宁
Owner 浙江新洁新材料科技有限公司
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