Processes comprising crosslinking polyethylene or using crosslinked polyethylene
A polyethylene and composition technology, applied in the field of cross-linked polyethylene or using cross-linked polyethylene, can solve problems such as uncertainty, affecting UHMWEPE performance, troubles, etc.
Inactive Publication Date: 2009-12-30
施乐辉骨科用品股份公司
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, these processes are relatively cumbersome, e.g. indeterminate, require more than one pass to melt UHMW PE, are time consuming, and / or substantially negatively affect other properties of UHMW PE such as crack resistance
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0096] Sinter GUR 4020, and measure the Charpy impact strength of the sintered GUR 4020 to be 191kJ / M 2 .
Embodiment 2
[0098] Example 1 was repeated except that the GUR 4020 was compacted before sintering. The Charpy impact strength of compacted and sintered GUR 4020 was determined to be 202kJ / M 2 .
Embodiment 3
[0100] Sintered GUR 1020, and determined that the anti-fatigue crack growth of sintered GUR 1020 was 1.25MPa / m 1 / 2 .
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Abstract
Provided are processes comprising crosslinking polyethylene or using crosslinked polyethylene. Furthermore, the processes may include compacting and / or sintering the polyethylene.
Description
technical field [0001] The present invention relates to processes involving crosslinked polyethylene or using crosslinked polyethylene, and products obtained therewith. Background technique [0002] Ultra-high molecular weight polyethylene (UHMW PE) is known inter alia for its chemical resistance, low coefficient of friction high toughness and water resistance. It turns out to find many applications in harsh environments where some or all of the above properties are required. This polymer is also known to be difficult to process, due to the fact that above its crystalline melting temperature, UHMW PE does not form a fluid phase whose viscosity allows the melts used for common thermoplastic polymers. body processing technology. [0003] A negative consequence of the fact that UHMW PE only changes to a viscoelastic state above its crystalline melting temperature is that the original polymer particles soften but tend to substantially retain their shape. Even at relatively hi...
Claims
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IPC IPC(8): B29C43/00
CPCB29K2023/0683B29C43/003B29C43/006B29L2031/7532
Inventor H·施默兹尔Y·迪瑞克斯P·史密斯T·特尔沃特L·布兰尼尔
Owner 施乐辉骨科用品股份公司