Rare-earth-modified-montmorillonite-added modified PVC (polyvinyl chloride) microporous insulation binder

Abstract

The invention discloses a rare-earth-modified-montmorillonite-added modified PVC (polyvinyl chloride) microporous insulation binder which is prepared from the following raw materials in parts by weight: 1.5-1.6 parts of halloysite nanotube, 0.75-0.77 part of silane coupling agent kh570, a right amount of deionized water, a right amount of anhydrous ethanol, 1.2-1.4 parts of lauryl sodium sulfate, 1.4-1.5 parts of alkylphenol polyoxyethylene, 55-60 parts of butyl acrylate, 40-43 parts of 2-ethylhexyl acrylate, 40-44 parts of isotactic polypropylene, 53-55 parts of polyvinyl chloride, 3-4 parts of dibenzylidene sorbitol, a right amount of dioctyl phthalate, 3-4 parts of glass fiber, 12-13 parts of sodium-base montmorillonite, 7-8 parts of 0.4 mol / L lanthanum chloride solution, 1.5-1.6 parts of sodium monododecyl phosphate, 3-4 parts of poly-4-methyl-1-pentene and 2-3 parts of white wax oil. The product disclosed by the invention has excellent adhesiveness, insulativity and heat stability.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a modified PVC microporous insulating wrapping tape added with rare earth modified montmorillonite. Background technique [0002] Insulating bandages are mainly used to wrap joints and interfaces of wires and cables. In addition to being used for ordinary electrical insulation, they are also widely used in engineering pipeline protection, endoscopic line protection, and automotive wiring harness bundling protection. The prior art cloth-based insulating tape is composed of cloth base, rubber, rosin, and filler coating glue, which has good mechanical strength and insulation effect, but the cloth-based tape is easy to age, has poor waterproofness and sealing performance, and is exposed to high temperature and high pressure. , The shielding performance of the tape is greatly reduced, which makes it unable to be used in more fields. The existing polyethylene nitrogen pressure-sen...

AI Technical Summary

Problems solved by technology

The prior art cloth-based insulating tape is composed of cloth base, rubber, rosin, and filler coating glue, which has good mechanical strength and insulation effect, but the cloth-based tape is easy to age, has poor waterproofness and sealing performance, and is exposed to high temperature and high pressure. , the shielding performance of the tape is greatly reduced, resulting in the inability to be used in more fields

The existing polyethylene nitrogen pressure-sensitive adhesive tape is a general-purpose electrical adhesive tape, which is cheap, has excellent electrical properties and physical and mechanical properties, and has an electrical strength of up to 60kV / mm, high volume resistivity, soft and It is easy to stretch, and also has excellent acid and alkali resistance, aging resistance, cold resistance and humidity resistance. It is widely used in the connection winding and insulation protection of AC and DC wires, the manufacture of electrical equipment, and the wrapping of various wire harnesses and cables. , the disadvantage is that the temperature resistance level is not high, and the heat dissipation performance is poor

[0003] In the article "Emulsion pressure-sensitive adhesive suitable for soft polyvinyl chloride electrical adhesive tape and its manufacturing method", although the tape made has the advantages of low softening point, strong cohesive force, and fast curing, but due to the polyacrylate The linear molecular structure determines its lack of heat resistance and mechanical strength. In addition, the application of emulsion-type acrylate pressure-sensitive adhesives is slow, the drying energy consumption is high, and the surface tension is high. To broaden its scope of use and improve its comprehensive performance, it is necessary to modify polyvinyl chloride substrates and acrylate pressure-sensitive adhesives