Method for testing abrasion resistance of ultra-high molecular mass polyethylene

A technology with ultra-high molecular weight and wear resistance, applied in the field of polymer material testing and evaluation, it can solve the problems of indistinguishable, inability to evaluate the wear resistance of high wear resistance plastics such as UHMWPE, and time-consuming, and achieve the effect of reasonable evaluation.

Inactive Publication Date: 2009-08-19
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method for evaluating the wear resistance of plastics is generally to use the national standard "Plastic Sliding Friction and Wear Test Method" (GB3960-83), and to test the wear resistance by rubbing plastic against a smooth surface. This method takes a long time. And it is impossible to evaluate the wear resistance of high wear resistance plastics such as UHMWPE, and the wear resistance of UHMWPE with different molecular weights and different grades cannot be distinguished

Method used

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  • Method for testing abrasion resistance of ultra-high molecular mass polyethylene
  • Method for testing abrasion resistance of ultra-high molecular mass polyethylene
  • Method for testing abrasion resistance of ultra-high molecular mass polyethylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put the UHMWPE powder with a molecular weight of 1.5 million into a custom-made abrasive tool, adjust the temperature, pressure and pressing time of the XLB flat vulcanizer, and obtain a test sample with a size of 30×7×6±0.2mm. Before the test, visually check whether the surface of the spline is smooth, whether there are defects such as bubbles, cracks, delamination, obvious impurities, and processing damage, and measure the length, width, and height of the spline with a vernier caliper to observe whether the size of the spline is within the required error range. The splines were polished with 400# metallographic sandpaper, scrubbed with wine clear cotton balls, dried in an infrared drying oven, and weighed.

[0021] Fix the friction ring glued with 280# sandpaper on the MH-20 friction and wear testing machine. The rotation speed of the fixed friction ring is 200r / min. Put the sample into the fixture and fix it on the testing machine. After the number of rotations is 25...

Embodiment 2

[0023] Put the UHMWPE powder with a molecular weight of 2.2 million into a custom-made abrasive tool, adjust the temperature, pressure and pressing time of the XLB flat vulcanizer, and obtain a test sample with a size of 30×7×6±0.2mm. Before the test, visually check whether the surface of the spline is smooth, whether there are defects such as bubbles, cracks, delamination, obvious impurities, and processing damage, and measure the length, width, and height of the spline with a vernier caliper to observe whether the size of the spline is within the required error range. The splines were polished with 400# metallographic sandpaper, scrubbed with wine clear cotton balls, dried in an infrared drying oven, and weighed.

[0024] Fix the friction ring glued with 280# sandpaper on the MH-20 friction and wear testing machine. The rotation speed of the fixed friction ring is 200r / min. Put the sample into the fixture and fix it on the testing machine. After the number of rotations is 25...

Embodiment 3

[0026] Put the UHMWPE powder with a molecular weight of 2.8 million into a custom-made abrasive tool, adjust the temperature, pressure and pressing time of the XLB flat vulcanizer, and obtain a test sample with a size of 30×7×6±0.2mm. Before the test, visually check whether the surface of the spline is smooth, whether there are bubbles, cracks, delamination, obvious impurities and processing damage, etc., and use a vernier caliper to measure the length, width, and height of the spline, and observe whether the size of the spline is within the required error range. The splines were polished with #400 metallographic sandpaper, scrubbed with wine clear cotton balls, dried in an infrared drying oven, and weighed.

[0027] Fix the friction ring glued with 280# sandpaper on the MH-20 friction and wear testing machine. The rotation speed of the fixed friction ring is 200r / min. Put the sample into the fixture and fix it on the testing machine. After the number of rotations is 250r, 500...

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Abstract

The invention relates to a method for testing wear-resisting property of polyethylene with super high molecular weight. The method comprises the following steps: based on the method for frictional wear test of plastic sliding of national standard (GB3960-83), a friction ring glued with sand paper is fixed on an MH-20 type frictional wear testing machine so as to fix the rotating speed of the friction ring; by relative wearing of the sample and the friction ring, the quality wearing capacity and grinding defect width of polyethylene with super high molecular weight are tested and volume wearing capacity and friction coefficients are calculated so as to obtain wear-resisting property of the polyethylene with super high molecular weight, which has different molecular weight and grades. Compared with the prior art, the method has the advantages of being fast, simple, easy and reasonable and the like.

Description

technical field [0001] The invention belongs to the field of detection and evaluation of polymer materials, and in particular relates to a method for testing the wear resistance of ultra-high molecular weight polyethylene. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is polyethylene with a molecular weight of 1 million to 4 million or even higher. Due to its long molecular chain and extremely high molecular weight, it has some excellent qualities that other resins do not have, such as impact resistance and wear resistance. loss, self-lubrication, chemical corrosion resistance, low temperature resistance, etc. UHMWPE is the plastic with the best wear resistance that has been found so far, and exceeds some metal materials, so its plates and pipes are widely used in long-distance transportation in industries such as petroleum, coal, mining, metallurgy, thermoelectricity, mineral processing, and grain processing. [0003] The wear resistance o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N19/02
Inventor 王新威张炜张玉梅洪尉夏晋程
Owner SHANGHAI RES INST OF CHEM IND
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