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Preparation method of outdoor weather-resistant and environment-friendly PVC electric wire corrugated pipe material

A corrugated pipe, environmental protection technology, applied in the field of outdoor weather-resistant and environmentally friendly PVC wire corrugated pipe preparation field, can solve the problems of high molding processing requirements, environmental protection pressure, etc., and achieve the effect of meeting the long-term outdoor use requirements

Inactive Publication Date: 2017-04-19
WUXI YONGXING METAL HOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the high requirements of PVC wire corrugation on molding processing, lead salt stabilizers with good stability are generally used in the formulation, which has caused environmental pressure due to the toxicity of lead

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for preparing an outdoor weather-resistant and environment-friendly PVC wire corrugated pipe, comprising the following steps:

[0015] Step 1, in parts by weight, disperse 13 parts of polymethyl methacrylate in 32 parts of ethyl acetate, then add 5 parts of titanate coupling agent, 2 parts of castor oil propylene oxide polymer, and 4 parts of emulsifier , 2 parts of monomethyl maleate, 5 parts of sodium citrate, 1.4 parts of initiator, heat up to 155 ° C for 2.5 hours, let cool, filter with suction, wash the filter cake with ethanol, and dry the filter cake to obtain Complex;

[0016] Step 2, in parts by weight, mix 4 parts of compound, 13 parts of PVC, 2 parts of coumarone resin, 0.9 part of antioxidant, 0.3 part of stabilizer, 0.5 part of plasticizer, and 0.4 part of lignosulfonate , imported into a twin-screw extruder for extrusion.

[0017] Wherein, the titanate coupling agent is titanate coupling agent NDZ-401, the emulsifier is sodium dodecylbenzenesulf...

Embodiment 2

[0019] A method for preparing an outdoor weather-resistant and environment-friendly PVC wire corrugated pipe, comprising the following steps:

[0020] Step 1, in parts by weight, disperse 10 parts of polymethyl methacrylate in 30 parts of ethyl acetate, then add 3 parts of titanate coupling agent, 1 part of castor oil propylene oxide polymer, and 2 parts of emulsifier , 1 part of monomethyl maleate, 3 parts of sodium citrate, 0.8 parts of initiator, heat up to 150 ° C for 3 hours, let cool, filter with suction, wash the filter cake with ethanol, and dry the filter cake to obtain a compound thing;

[0021] Step 2, in parts by weight, mix 3 parts of compound, 10 parts of PVC, 1 part of coumarone resin, 0.4 part of antioxidant, 0.1 part of stabilizer, 0.2 part of plasticizer, and 0.2 part of lignosulfonate, Import the twin-screw extruder to extrude.

[0022] Wherein, the titanate coupling agent is titanate coupling agent NDZ-401, the emulsifier is sodium dodecylbenzenesulfonate...

Embodiment 3

[0024] A method for preparing an outdoor weather-resistant and environment-friendly PVC wire corrugated pipe, comprising the following steps:

[0025] Step 1, in parts by weight, disperse 17 parts of polymethyl methacrylate in 34 parts of ethyl acetate, then add 6 parts of titanate coupling agent, 2 parts of castor oil propylene oxide polymer, and 4 parts of emulsifier , 3 parts of monomethyl maleate, 6 parts of sodium citrate, 2.1 parts of initiator, heat up to 150 ° C for 3 hours, let cool, filter with suction, wash the filter cake with ethanol, dry the filter cake, and obtain a compound thing;

[0026] Step 2, in parts by weight, mix 5 parts of compound, 18 parts of PVC, 3 parts of coumarone resin, 0.9 part of antioxidant, 0.4 part of stabilizer, 0.6 part of plasticizer, and 0.5 part of lignosulfonate , imported into a twin-screw extruder for extrusion.

[0027] Wherein, the titanate coupling agent is titanate coupling agent NDZ-401, the emulsifier is sodium dodecylbenzen...

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Abstract

The invention provides a preparation method of an outdoor weather-resistant and environment-friendly PVC electric wire corrugated pipe material. Firstly, polymethyl methacrylate is dispersed in ethyl acetate; then a titanate coupling agent, castor oil propylene oxide polymer, an emulsifying agent, maleicacidmonomethylester, sodium citrate and initiator are added, and the temperature is risen to 150-160 DEG C and preserved for 2-3 h; chilling and suction filtration are performed, and a filter cake is washed with ethanol and is dried; and then obtained compounds, PVC, coumarone-indene resin, an anti-oxidizing agent, a stabilizing agent, a plasticizing agent and lignosulfonate are mixed and guided into a double screw extruder to be extruded out, and then the outdoor weather-resistant and environment-friendly PVC electric wire corrugated pipe material is obtained. The heavy metal content of the pipe material meets the ROHS requirement, the harmful substance content meets the REACH requirement, the outdoor weather-resistant and environment-friendly PVC electric wire corrugated pipe material can pass through a -40 DEG C flat experiment, a 80 DEG C flat experiment and a 1000-hour accelerated aging experiment, the flame retarding level is UL94-1999V0, the oxygen index is 39.2, and the long-time outdoor using requirement can be met.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of an outdoor weather-resistant and environment-friendly PVC wire corrugated pipe. Background technique [0002] Polyvinyl chloride corrugated wire pipe (PVC corrugated pipe) has gradually replaced various plastic pipes and metal pipes due to its combination of rigidity and flexibility and good performance. tubing. However, with the development of the telecommunication industry, the huge increase in the amount of outdoor cables makes the PVC wire corrugated pipes traditionally used indoors can be used outdoors. However, when the rigid PVC wire bellows is used outdoors, it is exposed to sunlight and wind and rain for a long time, which is prone to surface pulverization, which greatly affects its service life. In addition, outdoor use requires a wide temperature range, and the long-term use temperature is -40-80°C. In addition, becaus...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L45/02C08L33/12C08L91/00C08K5/00C08K5/12C08K5/098C08K5/10C08K5/57
CPCC08L27/06C08L2201/02C08L2203/18C08L2203/202C08L2205/035
Inventor 王铮
Owner WUXI YONGXING METAL HOSE
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