Super high molecular weight polyethylene composite liner

A technology of ultra-high molecular weight and composite lining board, which is applied in the field of ultra-high molecular weight polyethylene composite materials, can solve the problems of non-recyclability and achieve high heat distortion temperature, good flame retardancy, and high wear resistance

Inactive Publication Date: 2008-08-27
上海枚胜化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 1032175A blends and cross-links ultra-high molecular weight polyethylene, styrene-butadiene rubber, super wear-resistant carbon black, dicumyl peroxide and other additives, and obtains a composite material by molding method, and its wear amount is close to Zero, the residual strength rate reaches 83%-96%, and the temperature rises to 350°C without softening, but the composite material is a cross-linked system, which is a thermosetting material, which cannot be recycled, and can only be made by turning and other mechanical processing methods. product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh in order according to mass percentage: 30% of ultra-high molecular weight polyethylene with a relative molecular mass of 6 million, 25% of reinforced nylon (PA66), 20% of filled polytetrafluoroethylene (PTFE), titanate coupling agent (OL- T999, liquid) 15%, superfine active magnesium hydroxide powder with a particle size range of 2.0-3.0 μm 10%. First, add ultrafine active magnesium hydroxide powder into the coupling agent, and stir at room temperature for 2 minutes at a speed of 2000 rpm. Add ultra-high molecular weight polyethylene, reinforced nylon and filled polytetrafluoroethylene into a high-speed mixer, stir at high speed for 2 minutes, then add titanate coupling agent / ultrafine calcium carbonate mixed system, and continue stirring for 5 minutes. It is hot-pressed on an ordinary press, with a pressure of 3-9MPa, a temperature of 340°C-380°C, and a hot-pressing time of 10-20min. Keep the pressure and cool to normal temperature to obtain the ultra-high molec...

Embodiment 2

[0023] Weigh in order according to mass percentage: 47.5% of ultra-high molecular weight polyethylene with a relative molecular mass of 4.5 million, 20% of reinforced nylon (PA66), 15% of filled polytetrafluoroethylene (PTFE), silane coupling agent (PC-1A, Liquid) 10%, superfine active magnesium hydroxide powder with a particle size range of 1.0-2.0 μm 7%, aluminum-titanium composite coupling agent 0.5%. First, add the superfine activated magnesium hydroxide powder into the silane coupling agent, and stir at room temperature for 2 minutes at a speed of 2000 rpm. Add ultra-high molecular weight polyethylene, reinforced nylon and filled polytetrafluoroethylene into the high-speed mixer, stir at high speed for 2 minutes, then add the silane coupling agent / ultrafine calcium carbonate mixed system, and aluminum-titanium composite coupling agent and continue stirring for 5 minutes. It is hot-pressed on an ordinary press, with a pressure of 3-9MPa, a temperature of 340°C-380°C, and a...

Embodiment 3

[0028] Weigh in order according to mass percentage: 65% of ultra-high molecular weight polyethylene with a relative molecular mass of 3 million, 15% of reinforced nylon (PA66), 10% of filled polytetrafluoroethylene (PTFE), titanate coupling agent (KR- 7, liquid) 5%, superfine active magnesium hydroxide powder 5% with a particle size range of 5-10 μm. First, add ultrafine active magnesium hydroxide powder into the titanate coupling agent, and stir at room temperature for 2 minutes at a speed of 2000 rpm. Add ultra-high molecular weight polyethylene, reinforced nylon and filled polytetrafluoroethylene into a high-speed mixer, stir at high speed for 2 minutes, then add titanate coupling agent / ultrafine calcium carbonate mixed system, and continue stirring for 5 minutes. It is hot-pressed on an ordinary press, with a pressure of 3-9MPa, a temperature of 340°C-380°C, and a hot-pressing time of 10-20min. Keep the pressure and cool to normal temperature to obtain the ultra-high mole...

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Abstract

A super-high molecular weight polyethylene composite lining plate is formed by the following materials: super-high molecular weight polyethylene, reinforced polyamide, filled polytetrafluoroethylene, coupling agent, ultra-fine active magnesium hydrate powder and universal coupling agent. The horizontal and longitudinal molecular chain of the invention are compact regular shape, and molecular cross chains are compact irregular shape, thereby increased the property of products at large maximum, especially heat-proof property and abrasion-resistance compared with pure super-high molecular weight polyethylene products. The thermal deformation temperature of the invention can reach over 210 DEG C (0.45MPa, GB/T1634-2004), and abrasion value is lower 1.60*10-5g/cm2 (GB/T4085-1983). The super-high molecular weight polyethylene composite material which has high thermal deformation temperature and high abrasion resistance can be used as stock house lining plates in coal mine, metallurgy, grain processing, salt-making, cement, ports or flow process lines of light industry.

Description

Technical field: [0001] The invention relates to the technical field of polymer materials, in particular to the technical field of high polymers and their molding processing, more specifically, to an ultra-high molecular weight polyethylene composite material with high heat distortion temperature, wear resistance and high surface hardness. Material. Background technique: [0002] Ultra-high molecular weight polyethylene (polyethylene with a viscosity-average molecular weight exceeding 1.5 million) has excellent wear resistance, impact resistance, chemical corrosion resistance and low-temperature toughness, and is widely used as a thermoplastic engineering plastic. However, ultra-high molecular weight polyethylene also has some inherent disadvantages of polyethylene resin, such as low heat distortion temperature, poor creep resistance, large thermal expansion coefficient, and low surface hardness, which limit its application range to a certain extent. [0003] The measures t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/22C08K5/54C08K5/00C08J5/18C08L77/02C08L27/18
Inventor 叶正林薛平李建立
Owner 上海枚胜化工科技有限公司
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