A kind of preparation method of semiconductive polyolefin slurry
A polyolefin slurry and semi-conductive technology, which is applied in the direction of power cables, circuits, and power cables with shielding layers/conductive layers, can solve the problems of reducing the conductivity of materials, polluting materials, and reducing the surface smoothness of material products. Avoid agglomeration, enhance dispersion, and ensure the effect of dispersion
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Embodiment 1
[0028] The preparation method of semiconductive polyolefin slurry in the present embodiment is carried out according to the following steps:
[0029] All raw materials in the examples were subjected to -0.09MPa high negative pressure dust removal treatment before opening the package for use, and all steps were implemented in an ultra-clean environment with a cleanliness level of 100.
[0030] (1) Under a liquid nitrogen environment, ethylene-vinyl acetate (vinyl acetate content is 18%) polymer is frozen for 2 hours, pulverized and ground into fine particles, then screened and refined with a 300-mesh standard sieve, and dried. Gather spares.
[0031] (2) Vacuum-dry the superconducting carbon black at 120°C for 24 hours, grind it with a ball mill for 30 minutes, and then sieve it with a 300-mesh standard sieve. Take 3Kg of superconducting carbon black after screening and add it to 27Kg of micropores with a pore size of 0.2 μm. In the isopropanol solvent after membrane purificat...
Embodiment 2
[0035] The preparation method of semiconductive polyolefin slurry in the present embodiment is carried out according to the following steps:
[0036] All raw materials in the examples were subjected to -0.09MPa high negative pressure dust removal treatment before opening the package for use, and all steps were carried out in an ultra-clean environment with a cleanliness level of 100.
[0037] (1) In a liquid nitrogen environment, the ethylene-ethyl acrylate (16% ethyl acrylate content) polymer was frozen for 2 hours, crushed and ground into fine particles, then sieved and refined with a 300-mesh standard sieve, and dried. Gather spares.
[0038] (2) Superconducting carbon black and carbon nanotubes were vacuum-dried at 120°C for 24 hours, ground for 30 minutes with a ball mill, and then screened with a 300-mesh standard sieve, and 2.5Kg of superconducting carbon black and carbon nanotubes after screening were taken respectively. Tube 0.5Kg, add 12Kg of isopropanol solvent pur...
Embodiment 3
[0042] The preparation method of semiconductive polyolefin slurry in the present embodiment is carried out according to the following steps:
[0043] All raw materials in the examples were subjected to -0.09MPa high negative pressure dust removal treatment before opening the package for use, and all steps were carried out in an ultra-clean environment with a cleanliness level of 100.
[0044] (1) Under a liquid nitrogen environment, the ethylene-butyl acrylate (butyl acrylate content is 27%) polymer was frozen for 2 hours, crushed and ground into fine particles, then sieved and refined with a 300-mesh standard sieve, and dried. Gather spares.
[0045](2) Superconducting carbon black and graphene sheets were vacuum-dried at 120° C. for 24 hours respectively, ground for 30 minutes with a ball mill, and then screened with a 300-mesh standard sieve to get superconducting carbon black 2.5Kg and graphene sheets after screening. Add 0.5Kg to 7Kg of isopropanol solvent purified and...
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Abstract
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