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Ultra high molecular weight polyethylene low-resistance wear-resistance support friction pair material and preparation thereof

An ultra-high molecular weight, polyethylene technology, applied in the field of polymer materials, can solve the problems of poor wear resistance and low compressive strength of pure PTFE, and achieve improved compatibility, low friction coefficient, and creep. small effect

Inactive Publication Date: 2009-09-23
LUOYANG SUNRUI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that pure PTFE has low bearing strength and poor wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Dilute KH-550 with ethanol to a concentration of 10%, take out 0.5% of the diluted KH-550 to 15% of 1250 mesh ultrafine glass beads, 10% of MoS 2 The filler is pretreated by spraying evenly while stirring the filler. After stirring evenly, the filler is dried for use.

[0025] Take 71% of ultra-high molecular weight polyethylene, 1% of 1010 antioxidant, and 3% of carbon black light shielding agent, respectively weigh and put them into a high-speed mixer for high-speed mixing with the above-mentioned fillers, and stir evenly to form a mixture.

[0026] Put the mixture into a mold and heat it up to 190°C, shape it under a pressure of 20MPa, heat and hold pressure for 70 minutes, and then take it out when it is cooled to below 60°C under pressure to make ultra-high molecular weight polyethylene low-resistance wear-resistant support. Seat friction pair material.

Embodiment 2

[0028] Dilute KH-560 with ethanol to a concentration of 20%, take out 0.5% of the diluted KH-560 against 5% graphite, 10% SiO 2 The filler is pretreated by spraying evenly while stirring the filler. After stirring evenly, the filler is dried for use.

[0029] Take 79.5% ultra-high molecular weight polyethylene, 0.5% 1076 antioxidant, and 5% carbon black light shielding agent, respectively weigh and put the above fillers into a high-speed mixer for high-speed mixing, and stir evenly to form a mixture.

[0030] Put the mixture into a mold and heat it to 210°C, shape it under a pressure of 30MPa, heat and hold the pressure for 50 minutes, and then take it out when it is cooled to below 60°C under the state of holding pressure to make ultra-high molecular weight polyethylene low-resistance wear-resistant support. Seat friction pair material.

Embodiment 3

[0032] Dilute KH-560 with ethanol to a concentration of 20%, take out 0.5% of the diluted KH-560 to 15% of 2500 mesh ultrafine glass beads, 5% of nano-SiO 2 , 5% MoS 2 , 2% PTFE filler as pretreatment, adopt the way of stirring the filler while spraying evenly, after stirring evenly, dry the filler for later use.

[0033] Take 69% ultra-high molecular weight polyethylene, 1% 1076 antioxidant, and 3% carbon black light shielding agent, respectively weigh and put the above fillers into a high-speed mixer for high-speed mixing, and stir evenly to form a mixture.

[0034] Put the mixture into a mold and heat it to 220°C, shape it under a pressure of 30MPa, heat and hold the pressure for 40 minutes, and then take it out when it is cooled to below 60°C under the state of holding pressure to make ultra-high molecular weight polyethylene low-resistance wear-resistant support. Seat friction pair material.

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PUM

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Abstract

An ultra high molecular weight polyethylene low-resistance wear-resistance support friction pair material comprises the following components by weight percentage: 40 to 97.8 percent of ultra high molecular weight polyethylene, 1 to 30 percent of inorganic reinforcing filler treated by a coupling agent; 1 to 15 percent of oil pad treated by a coupling agent; 0.1 to 2 percent of antioxidant, and 0.1 to 5 percent of light screener. The preparation of the support friction pair material comprises three steps of filler pretreatment, material mixing and compression molding forming. The ultra high molecular weight polyethylene UHMWPE has extremely low friction coefficient, excellent self-lubrication and wear resistance topped plastics but low surface hardness, low mechanical strength and low high temperature-resistance performance, so modification by a filling or coupling method of the ultra high molecular weight polyethylene is required. The material is advantages over pure poly(tetrafluoroethylene) in terms of bearing strength and wear resistance, is characterized by low friction coefficient and small creep deformation, improves compatibility, further ensures the wear resistance of the material and meets use requirements.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ultra-high molecular weight polyethylene low-resistance wear-resistant bearing friction pair material and its preparation. Background technique [0002] The friction pair material of the support is an important part for the support to realize the sliding function. my country's "GB 20688.4-2007 Rubber Bearings Part 4: Ordinary Rubber Bearings", "GB / T 17955-2000 Technical Conditions for Ball Bearings", "JT / T 391-1999 Highway Bridge Basin Rubber Bearings", "TB / T 2331-2004" and other regulations stipulate that the friction pair material used for the support is polytetrafluoroethylene or filled polytetrafluoroethylene, and the support manufacturers currently use pure polytetrafluoroethylene plates as the friction pair material. The disadvantage is that pure PTFE has low bearing strength and poor wear resistance. Contents of the invention [0003] In order t...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K7/20C08K3/30C08K3/04B29C43/58
Inventor 冯刚宪刘绍辉姜文英
Owner LUOYANG SUNRUI SPECIAL EQUIP
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