Ultrahigh molecular weight polyethylene plate production method

An ultra-high molecular weight polyethylene board technology, used in applications, household appliances, flat products, etc., can solve the problems of cloud spots, entangled molecular chains of ultra-high molecular weight polyethylene, poor fluidity, uneven thickness of the board, etc.

Pending Publication Date: 2019-10-25
江苏明珠硅橡胶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the ultra-high molecular weight polyethylene molecular chain is entangled and has poor fluidity, the 2-20mm thick plate pressed by the conventional process has uneven thickness, inconsistent density, cloud spots under the light, and it is difficult to guarantee product quality and physical properties.

Method used

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  • Ultrahigh molecular weight polyethylene plate production method

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Effect test

Embodiment 1

[0015] The production method of ultra-high molecular weight polyethylene board in this embodiment, the specific pressing steps are: add ultra-high molecular weight polyethylene particles, carbon fiber, and silicone resin The mixture of vinyl powder is fed into the molding machine. In the mixture, ultra-high molecular weight polyethylene powder is ultra-high molecular weight polyethylene powder with a molecular weight greater than 3 million; the content of ultra-high molecular weight polyethylene powder is 85-94%; the content of carbon fibers of 0.1 to 5 mm is 5-10%; The content of silicone resin is 1-5%.

[0016] In this embodiment, 94 kg of ultra-high molecular weight polyethylene particles with a molecular weight greater than 3 million, 5 kg of carbon fiber, and 1 kg of silicone resin are mixed in the mixer. Two metal plates 3 are placed between the upper mold gland 1 and the lower mold gland 2 of the molding machine, the material is P20 material, and polished and chrome-pl...

Embodiment 2

[0019] The production method of ultra-high molecular weight polyethylene board in this embodiment, the specific pressing steps are: add ultra-high molecular weight polyethylene particles, carbon fiber, and silicone resin The mixture of vinyl powder is fed into the molding machine. In the mixture, ultra-high molecular weight polyethylene powder is ultra-high molecular weight polyethylene powder with a molecular weight greater than 4.5 million; the content of ultra-high molecular weight polyethylene powder is 85-94%; the content of carbon fibers of 0.1 to 5 mm is 5-10%; The content of silicone resin is 1-5%.

[0020] In this embodiment, 90 kg of ultra-high molecular weight polyethylene particles with a molecular weight greater than 4.5 million, 8 kg of carbon fiber, and 2 kg of silicone resin are mixed in the mixer. Two metal plates 3 are arranged between the upper die gland and the lower die gland of the molding machine, said metal plates are preferably iron plates, the two ir...

Embodiment 3

[0023] The production method of ultra-high molecular weight polyethylene board in this embodiment, the specific pressing steps are: add ultra-high molecular weight polyethylene particles, carbon fiber, and silicone resin The mixture of vinyl powder is fed into the molding machine. In the mixture, the ultra-high molecular weight polyethylene powder is ultra-high molecular weight polyethylene powder with a molecular weight greater than 6 million; the content of ultra-high molecular weight polyethylene powder is 85-94%; the content of 0.1-5mm carbon fiber is 5-10%; The content of silicone resin is 1-5%.

[0024] In this embodiment, 85 kg of ultra-high molecular weight polyethylene particles with a molecular weight greater than 6 million, 10 kg of carbon fiber, and 5 kg of silicone resin for mixing in the mixer are placed between the upper mold gland and the lower mold gland of the molding machine. Two metal plates 3, said metal plates are preferably iron plates, the two iron pla...

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Abstract

The invention discloses an ultrahigh molecular weight polyethylene plate production method. Two metal sheets are placed between an upper mould pressing cover and a lower mould pressing cover on a mould pressing machine, a high-temperature-resistant elastic rubber layer plate is placed between the two metal sheets at the same time, a mixture containing ultrahigh molecular weight polyethylene powderis filled between the upper mould pressing cover and the metal sheet on the upper layer so as to be pressed, and the elasticity of the elastic rubber layer is utilized for improving the extrusion stress of the mixture in the pressing process, so that the extrusion stress on the ultrahigh molecular weight polyethylene powder is consistent, and finally an ultrahigh molecular weight polyethylene plate with uniformly distributed powder is obtained through pressing. By adopting the method, a product blank is effectively prevented from deviating and a sheet material is prevented from becoming warped during production, so that the thickness uniformity and the density consistency of the sheet material are ensured, the product has a high physical property, meanwhile, the mould pressing process conditions and parameters of the ultrahigh molecular weight polyethylene thin plate are improved, and the defects that the ultrahigh molecular weight polyethylene thin plate products are non-uniform in thickness and inconsistent in density, and dark and light spots appear under light are effectively overcome.

Description

technical field [0001] The invention relates to a production technology of ultra-high molecular weight polyethylene polymer material, in particular to a production method of molded ultra-high molecular weight polyethylene sheet. Background technique [0002] Ultra-high molecular weight polyethylene refers to a linear structure polyethylene with a molecular weight of 3 to 10 million. It is an engineering plastic with the best comprehensive properties. Its wear resistance, impact resistance, corrosion resistance, self-lubrication, and impact energy absorption—these five properties are The best of existing plastics, known internationally as an "amazing material". Ultra High Molecular Weight Polyethylene (UHMWPE) has been widely used in various sectors of national industry because of its superior performance. UHMW-PE has been widely used in textile, papermaking, packaging, transportation, machinery, chemical industry, mining, petroleum, agriculture, construction, electrical, fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/18C08L23/06B29K23/00B29L7/00
CPCB29C43/18B29C43/003C08L23/06C08L2207/068B29K2023/06B29L2007/002C08L83/04C08K7/06
Inventor 朱德洪陈廷松田月仙黄俊
Owner 江苏明珠硅橡胶材料有限公司
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