Cracking resistance modified polyethylene material and preparation method therefor

A polyethylene and anti-cracking technology, which is applied in the field of anti-cracking modified polyethylene materials and their preparation, can solve problems such as cracking of the outer layer of polyethylene, and achieve the effects of prolonging the service life, improving the range of adapting to temperature changes, and having advanced formulations.

Inactive Publication Date: 2016-01-13
山东融汇管通股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the modification of polyethylene materials and micro-crosslinking technology, the problem of cracking of the polyethylene outer layer of steel-plastic composite pipes can be solved

Method used

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  • Cracking resistance modified polyethylene material and preparation method therefor

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Experimental program
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Effect test

Embodiment １

[0030] (1) Linear low-density polyethylene particles (Qilu Petrochemical 7042), 4 packs of 100kg, filled into a plastic mill for grinding, grinding process parameters: grinding disc temperature ≤ 65 ° C, grinding disc rotation speed 2500-3200rpm;

[0031] (2) Take antioxidant 1010 (BASF AG), 2kg; antioxidant 168 (BASF AG), 2kg; peroxide (dicumyl peroxide DCP) 6kg, take the linearity obtained in step (1) 100kg of low-density polyethylene powder is filled into a high-speed mixer and mixed to prepare a composite powder. The mixing process parameters are: temperature 80-120°C, speed ≥ 800rpm, mixing time 3-10min;

[0032] (3) Melt and blend the composite powder obtained in step (2) with a twin-screw extruder, extrude and granulate to obtain a modified masterbatch, and the extrusion process parameters: the melt temperature is 110-210°C, and the screw speed is 100-800rpm; 25kg of modified masterbatch, bagged and set aside;

[0033] (4) Take 4 packages of high-density polyethylene, ...

Embodiment 2

[0036] (1) Linear low-density polyethylene particles (Qilu Petrochemical 7042), 4 packs of 100kg, filled into a plastic mill for grinding, grinding process parameters: grinding disc temperature ≤ 65 ° C, grinding disc rotation speed 2500-3200rpm;

[0037] (2) Take antioxidant 1010 (BASF AG), 1.5kg; antioxidant 168 (BASF AG), 1.5kg; peroxide (dicumyl peroxide DCP) 3kg, take step (1) to get 100kg of linear low-density polyethylene powder is filled into a high-speed mixer and mixed to prepare a composite powder. The mixing process parameters are: temperature 80-120°C, speed ≥ 800rpm, mixing time 3-10min;

[0038] (3) Melt and blend the composite powder obtained in step (2) with a twin-screw extruder, extrude and granulate to obtain a modified masterbatch, and the extrusion process parameters: the melt temperature is 110-210°C, and the screw speed is 100-800rpm; 25kg of modified masterbatch, bagged and set aside;

[0039] (4) Take 4 bags of high-density polyethylene, 100kg; 30kg ...

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Abstract

The invention discloses a cracking resistance modified polyethylene material and a preparation method therefor. The cracking resistance modified polyethylene material is prepared from linear low-density polyethylene, high-density polyethylene, POE (Polyolefin Elastomer) and modified masterbatch. Through polyethylene material modification and a micro cross-linking technology, the problem that polyethylene outer layers of composite metal plastic pipes crack is solved.

Description

technical field [0001] The invention relates to the technical field of organic polymer plastics, in particular to an anti-cracking modified polyethylene material and a preparation method thereof, which can be used for the outer layer of a steel-plastic composite pipe. Background technique [0002] Traditional drainage cast iron pipes, steel pipes, and cement pipes have been difficult to meet the needs of rapid urban development due to their inherent characteristics. As a result, some new types of plastic pipes have emerged, such as high-density polyethylene (HDPE) winding pipes, HDPE double-wall corrugated pipes, steel-plastic composite winding drainage pipes, etc. At present, with the development and technological progress of municipal water supply and drainage projects, large The demand for large-caliber plastic pipes continues to increase. Due to the impact of processing technology and economic costs, large-diameter plastic pipes mostly use steel-plastic composite structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K5/134C08K5/526C08K5/14
CPCC08L23/06C08L2205/025C08L2205/035C08L2207/04C08L2207/062C08L2312/00C08L23/0815C08K5/1345C08K5/526C08K5/14
Inventor 张传强刘可岭刘焕章
Owner 山东融汇管通股份有限公司
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