Ultrahigh-molecular-weight polyethylene lining pipe and preparation method thereof

An ultra-high molecular weight, polyethylene technology, used in the field of plastic pipes, can solve problems such as impact strength drop, and achieve the effect of strong wear resistance and strong resistance to thermal deformation.

Inactive Publication Date: 2020-12-01
莱芜华亚超高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the filler is modified, the impact strength decreases slightly. If the content is controlled within 40%, ultra-high molecular weight polyethylene (UHMW-PE) still has a relatively high impact strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 An ultra-high molecular weight polyethylene lined pipe

[0027] Take 88 parts of ultra-high molecular weight polyethylene with a molecular weight of 3.5 to 5.5 million, 3 parts of polyethylene with a molecular weight of less than 500,000, 8 parts of nanofillers, 0.015 parts of dibutyltin diacetate, and 0.8 parts of dibutyl hydroxytoluene. Weigh the material according to the above weight composition, mix it with a high-speed mixer, and extrude it with a single-screw extruder; the extrusion temperature of the single-screw extruder is 150°C in the first zone, 200°C in the second zone, and 260°C in the third zone. ℃, 185℃ in the fourth zone.

[0028] The preparation method of described nanofiller is:

[0029] (1) Mix glass microspheres with a particle size of 10-30 microns, fumed silica, and silane coupling agent at a weight ratio of 6:30:0.5, homogenize for 8 minutes at a vacuum degree of 0.05mpa, then vacuum dry and grind , to obtain mixed powder;

[0030] (2...

Embodiment 2

[0032] Example 2 A kind of ultra-high molecular weight polyethylene lined pipe

[0033] Take 84 parts of ultra-high molecular weight polyethylene with a molecular weight of 3.5 to 5.5 million, 4 parts of polyethylene with a molecular weight of less than 500,000, 10 parts of nanofillers, 0.018 parts of dibutyltin diacetate, and 0.5 parts of dibutyl hydroxytoluene. Weigh the material according to the above weight composition, mix it with a high-speed mixer, and extrude it with a single-screw extruder; the extrusion temperature of the single-screw extruder is 140°C in the first zone, 230°C in the second zone, and 240°C in the third zone. ℃, 170℃ in the fourth zone.

[0034] The preparation method of described nanofiller is:

[0035] (1) Mix glass microspheres with a particle size of 10-30 microns, fumed silica, and silane coupling agent at a weight ratio of 50:40:0.5, homogenize for 10 minutes at a vacuum degree of 0.04mpa, then vacuum dry and grind , to obtain mixed powder;

...

Embodiment 3

[0038] Example 3 An ultra-high molecular weight polyethylene lined pipe

[0039] Take 92 parts of ultra-high molecular weight polyethylene with a molecular weight of 3.5 to 5.5 million, 2 parts of polyethylene with a molecular weight of less than 500,000, 6 parts of nanofillers, 0.01 part of dibutyltin diacetate, and 1.2 parts of dibutyl hydroxytoluene. Weigh the material according to the above weight composition, mix it with a high-speed mixer, and extrude it with a single-screw extruder; the extrusion temperature of the single-screw extruder is 160°C in the first zone, 180°C in the second zone, and 290°C in the third zone. ℃, 200℃ in the fourth zone.

[0040] The preparation method of described nanofiller is:

[0041] (1) Mix glass microspheres with a particle size of 10-30 microns, fumed silica, and silane coupling agent at a weight ratio of 70:20:0.5, homogenize for 5 minutes at a vacuum degree of 0.06mpa, then vacuum dry and grind , to obtain mixed powder;

[0042] (2)...

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PUM

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Abstract

The invention belongs to the technical field of plastic pipes, and particularly relates to an ultrahigh-molecular-weight polyethylene lining pipe and a preparation method thereof. The lining pipe is prepared from the following raw materials in parts by weight: 84 to 92 parts of ultrahigh-molecular-weight polyethylene, 2 to 4 parts of polyethylene, 4 to 8 parts of a nanometer filler, 0.01 to 0.018part of a bonding catalyst and 0.5 to 1.2 parts of an antioxidant. The lining pipe provided by the invention has relatively strong wear resistance and thermal deformation resistance.

Description

technical field [0001] The invention belongs to the technical field of plastic pipes, and in particular relates to an ultra-high molecular weight polyethylene lined pipe and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene is a thermoplastic engineering plastic with a linear structure and excellent comprehensive properties. Compared with other engineering plastics, UHMWPE has disadvantages such as low surface hardness and heat distortion temperature, poor bending strength and creep performance. This is caused by the molecular structure and molecular aggregation morphology of ultra-high molecular weight polyethylene, which can be improved by filling and cross-linking methods. [0003] Use glass beads, glass fiber, mica, talc powder, silicon dioxide, aluminum oxide, molybdenum disulfide, carbon black, etc. to fill and modify ultra-high molecular weight polyethylene (UHMW-PE), which can make the surface hardness, Rigidity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K9/00C08K7/20C08K7/26
CPCC08L23/06C08L2203/18C08L2207/068C08L2201/08C08L2205/025C08K2201/005
Inventor 曹海杜兴涛张立国
Owner 莱芜华亚超高分子材料科技有限公司
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