US 12,002,601 B2
Stress-resistant, creep-resistant, high-temperature resistant and high-insulation sheath material for maglev train cable, and manufacturing method and use thereof
Ping Wang, Hefei (CN); Shang Gao, Hefei (CN); Yong Zhong, Hefei (CN); Wenxiu Liu, Hefei (CN); Tao Hong, Hefei (CN); Tao Song, Hefei (CN); Long Chen, Hefei (CN); Bin Ye, Hefei (CN); Yunsheng Ding, Hefei (CN); Li Yang, Hefei (CN); Jie Song, Hefei (CN); Hongyu Tian, Hefei (CN); and Haibing Lu, Hefei (CN)
Assigned to Anhui Jianzhu University, Hefei (CN)
Filed by Anhui Jianzhu University, Hefei (CN)
Filed on Oct. 27, 2023, as Appl. No. 18/496,779.
Application 18/496,779 is a continuation of application No. PCT/CN2023/095747, filed on May 23, 2023.
Claims priority of application No. 202210775361.8 (CN), filed on Jul. 1, 2022.
Prior Publication US 2024/0062935 A1, Feb. 22, 2024
Int. Cl. H01B 19/04 (2006.01); H01B 3/44 (2006.01); H01B 3/46 (2006.01); B61L 15/00 (2006.01)
CPC H01B 19/04 (2013.01) [H01B 3/441 (2013.01); H01B 3/465 (2013.01); B61L 15/0036 (2013.01); B61L 2210/04 (2013.01)] 5 Claims
 
1. A stress-resistant, creep-resistant, high-temperature resistant and high-insulation sheath material for a maglev train cable, comprising the following raw materials in parts by weight:
100-150 parts of ultra-high molecular weight polyethylene (UHMWPE);
50-80 parts of functional polyvinylsilicone grease;
50-80 parts of ceramicized silicone rubber;
120-200 parts of phosphorus nitrogen flame retardant;
30-50 parts of reinforcing fillers;
5-10 parts of vulcanizing agent;
1-5 parts of vulcanization accelerator;
1-5 parts of coupling agent;
5-10 parts of compatibilizer;
2-5 parts of lubricant;
1-3 parts of antioxidant; and
1-2 parts of antistatic agent;
wherein the functional polyvinylsilicone grease is a four-arm eight-membered ring star-shaped polymer represented by formula (I) and containing a large amount of unsaturated bonds,

OG Complex Work Unit Chemistry
wherein z, x, m and n are numbers of repeated units, and are independently integrals between 300 and 500; the sheath material is prepared by performing melting blend on the UHMWPE, functional polyvinylsilicone grease, ceramicized silicone rubber, phosphorus nitrogen flame retardant, reinforcing filler, coupling agent, compatibilizer, lubricant, antioxidant and antistatic agent in ratios to obtain blended masterbatches and then performing melting blend on the blended masterbatches, vulcanizing agent and vulcanization accelerator to obtain pre-crosslinked masterbatches.