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Preparation method of special sheath material for bridge cable

A technology for sheathing materials and cables, which is applied in the field of special sheathing materials for bridge cables and its preparation, can solve problems such as poor manufacturability, high cost, and complicated production process, and achieve good stability, simple and easy-to-control preparation process, and excellent environmental resistance The effect of stress cracking

Inactive Publication Date: 2018-07-03
SHANGHAI BANGZHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a special sheath material for bridge cables and its preparation method, which is used to overcome the shortcomings of the existing sheath materials such as complicated production process, poor manufacturability, and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the special sheath material for bridge cables, in parts by weight, its preparation raw materials include: 70 parts of high-density polyethylene, 25 parts of low-density polyethylene, 5 parts of vinyltrimethoxysilane, and 2 parts of color masterbatch , 0.5 part of antioxidant, 0.8 part of compounded ultraviolet absorber, 1.0 part of compounded plastic modifier. Among them, the high-density polyethylene is Shanghai Petrochemical YGH041; the low-density polyethylene is China Shenhua LLDPE8320; the masterbatch is the black masterbatch of Clariant; the antioxidant is a compound antioxidant composed of antioxidant 1010 and antioxidant 168. Antioxidant, antioxidant is 1:1 by the weight ratio of antioxidant 1010 and antioxidant 168; Composite ultraviolet absorber is made up of ultraviolet absorber 944 and ultraviolet absorber 326, and the weight ratio of ultraviolet absorber 944 and ultraviolet absorber 326 The compound plastic modifier is composed of polyet...

Embodiment 2

[0028] In this embodiment, the special sheath material for bridge cables, in parts by weight, its preparation raw materials include: 50 parts of high-density polyethylene, 40 parts of low-density polyethylene, 10 parts of vinyltrimethoxysilane, and 1 part of color masterbatch , 0.5 part of antioxidant, 1.0 part of compounded ultraviolet absorber, 0.5 part of compounded plastic modifier. Among them, the density of high-density polyethylene is 0.945 ~ 0.960g / cm 3 , at 190°C, the melt index under 2.16kg is 0.05-0.3g / 10min; the density of low-density polyethylene is 0.92-0.94g / cm 3 , at 190°C, the melt index under 2.16kg is 5-30g / 10min, and the elongation at break is greater than 500%; the masterbatch is Clariant's white masterbatch; the antioxidant is composed of antioxidant 1010 and antioxidant 168 The compound antioxidant of composition, antioxidant is that the weight ratio by antioxidant 1010 and antioxidant 168 is 2:1; Composite ultraviolet absorber is made up of ultraviolet...

Embodiment 3

[0031]In this embodiment, the special sheath material for bridge cables, in parts by weight, its preparation raw materials include: 80 parts of high-density polyethylene, 10 parts of low-density polyethylene, 8 parts of vinyltrimethoxysilane, and 10 parts of color masterbatch , 1.0 part of antioxidant, 0.5 part of compounded ultraviolet absorber, 0.7 part of compounded plastic modifier. Among them, the high-density polyethylene is Shanghai Petrochemical YGH041; the low-density polyethylene is China Shenhua LLDPE8320; the masterbatch is Clariant's anti-aging masterbatch; the antioxidant is a compound antioxidant composed of antioxidant 1010 and antioxidant 168 Oxygen agent, antioxidant is that the weight ratio by antioxidant 1010 and antioxidant 168 is 0.5:1; Composite ultraviolet absorber is made up of ultraviolet absorber 944 and ultraviolet absorber 326, and the weight of ultraviolet absorber 944 and ultraviolet absorber 326 The ratio is 2:1; the compound plastic modifier is...

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Abstract

The invention belongs to the technical field of high molecular materials and relates to a preparation method of a special sheath material for a bridge cable. The special sheath material for the bridgecable is prepared from the following raw materials in parts by weight: 50-80 parts of high density polyethylene, 10-40 parts of low density polyethylene, 5-10 parts of vinyl trimethoxy silane, 1.0-10parts of color master batch, 0.5-1.0 part of an antioxidant, 0.5-1.0 part of a compound ultraviolet absorbent and 0.5-1.0 part of a compound plastic modifier. The special sheath material for the bridge cable has excellent environmental stress cracking resistance, ageing resistance and good stability, and the indexes of the material meet the standard CJ / T297-2008 demand of Ministry of Housing andUrban-Rural Development. The preparation process of the special sheath material for the bridge cable is simple and easy to control, and the raw materials and equipment are easily available, so that the special sheath material for the bridge cable is quite conveniently produced on a large scale industrially.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a special sheathing material for bridge cables and a preparation method thereof. Background technique [0002] The cable system of a bridge is the main weighing structure of a modern long-span bridge, which plays a vital role in the life and quality of the bridge. The cable system bears load for a long time and is exposed to natural environmental conditions. It is subjected to environmental effects such as sunlight, rain, snow, and polluted air, and is subjected to multiple damage factors such as stress corrosion, fatigue corrosion, and metal corrosion. Once its performance decreases, it will affect the bridge quality, the consequences will be very serious. [0003] The cables of bridges are generally composed of steel strands or wire ropes and anchors. They are divided into several types according to the structure, but because the material is steel, it is easy to age an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K5/5425C08K5/134C08K5/526
CPCC08L23/06C08L2201/08C08L2205/025C08L2205/03C08L2207/062C08L23/0815C08K5/5425C08K5/1345C08K5/526
Inventor 储江顺毕宏海毕宏江欧阳贵
Owner SHANGHAI BANGZHONG NEW MATERIAL
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