PREPARATION METHOD FOR ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE NANOCOMPOSITE MATERIAL PRODUCT, MOLD, AND PRODUCT

WIPO Patent Application WO/2023/130723

A1

A preparation method for an ultra-high molecular weight polyethylene (UHMWPE) nanocomposite material product, comprising: step S1, preparing a UHMWPE base material into a UHMWPE melt, and injecting the UHMWPE melt into a mold; step S2, cooling the UHMWPE melt to a first temperature in a preset pressure state; step S3, injecting a low-molecular-weight polyolefin nanocomposite melt into the UHMWPE melt at a second temperature; and step S4, cooling and shaping to prepare a UHMWPE nanocomposite material product. The mechanical property and wear resistance of the UHMWPE product itself are guaranteed, the surface of the prepared UHMWPE product is uniform in structure, a lubricating layer is formed by means of the surface structure, the stable ultra-low friction coefficient is guaranteed, the forming process is simple, one-time forming is achieved, the cost is low, and good market prospects are provided.

HE CHENG (CN)
LI ZHI (CN)
XIA JINCHENG (CN)
ZHAO WENJING (CN)
FENG LINGYING (CN)
SHEN XIANTING (CN)
HU YILUN (CN)
HONG WEI (CN)
ZHOU HAIBO (CN)
ZHU WEILIANG (CN)

PCT/CN2022/112136

July 13, 2023

August 12, 2022

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SHANGHAI RES INSTITUTE OF CHEMICAL INDUSTRY CO LTD (CN)
SHANGHAI MITSUBISHI ELEVATOR CO LTD (CN)

C08L23/06; B29C45/27; C08K3/04; C08K3/30

CN114539650A	2022-05-27
US6641769B1	2003-11-04
CN1579740A	2005-02-16
CN106626221A	2017-05-10
CN105173970A	2015-12-23
GB2104826A	1983-03-16

DING & ASSOCIATES PATENT TRADEMARK & LAW (CN)

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