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Title:
FLEXIBLE POLYPROPYLENE MODIFIED INSULATION MATERIAL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/011515
Kind Code:
A1
Abstract:
A flexible polypropylene modified insulation material, a preparation method therefor, and an application thereof, in particular, relating to the field of cable insulation materials. The flexible polypropylene modified insulation material comprises a propylene-based continuous phase, as well as a rubber phase dispersed in the propylene-based continuous phase and a graft phase derived from a polymerizable monomer containing an unsaturated bond. On the basis of the total weight of the flexible polypropylene modified insulation material, the content of a xylene soluble matter in the flexible polypropylene modified insulation material is 10-55 wt%, preferably 15-45 wt%, more preferably 18-40 wt%, and more preferably 20-40 wt%; and the content of a structural unit in a grafted state derived from the polymerizable monomer containing the unsaturated bond in the flexible polypropylene modified insulation material is 0.3-6 wt%, preferably 0.7-5 wt%. The flexible polypropylene modified insulation material has a flexural modulus of 200-1000 MPa, preferably 200-950 MPa, more preferably 200-700 MPa, and more preferably 250-600 MPa. Preferably, the ratio of the mass of the structural unit, in a xylene insoluble matter, derived from the polymerizable monomer containing the unsaturated bond in the flexible polypropylene modified insulation material to the mass of the structural unit in the flexible polypropylene modified insulation material is greater than 0.1, preferably 0.3-0.9. The flexible polypropylene modified insulation material can give consideration to both mechanical performance and electrical performance at a higher working temperature, and is suitable for working conditions having high temperature and high operating field strength.

Inventors:
SHAO QING (CN)
HE JINLIANG (CN)
YUAN HAO (CN)
LI QI (CN)
ZHANG YARU (CN)
HU JUN (CN)
WNAG MINGDI (CN)
HUANG SHANGSHI (CN)
LI JUAN (CN)
HU SHIXUN (CN)
ZHANG QI (CN)
GAO DALI (CN)
SHI HONGWEI (CN)
Application Number:
PCT/CN2022/109917
Publication Date:
February 09, 2023
Filing Date:
August 03, 2022
Export Citation:
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Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
BEIJING RES INST CHEMICAL IND CHINA PETROLEUM & CHEMICAL CORP (CN)
UNIV TSINGHUA (CN)
International Classes:
C08L23/12; C08F222/06; C08F255/02; C08F255/04; H01B3/30
Domestic Patent References:
WO2007056154A22007-05-18
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Other References:
ZHANG GUANGPING: "Solid Phase Graft of Maleic Anhydride onto Polypropylene in Helical Ribbon Reactor", CHINA PLASTICS, vol. 16, no. 2, February 2002 (2002-02-01), pages 69 - 71
WANG ZHENGXISUN DAOTONGCAO LIQUN: "Application of the Standard Addition Method to Quantitative Infrared Analysis of Polymer [J", PLASTIC INDUSTRY, no. 6, 1989, pages 41 - 43
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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