Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes

Abstract

The invention discloses a preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes, which is characterized in that the tubes are made by the following steps: 75 to 100 portions of chlorinated polyvinyl chloride resin, 0 to 25 portions of vinyl chloride resin, 3 to 10 portions of ABS, 1 to 8 portions of acrylic acid resin, 3 to 8 portions of bismaleimides, 1 to 5 portions of plasticizing accelerator, 1 to 5 portions of compatibilizer, 10 to 25 portions of engineering plastics, 1 to 3 portions of lubricant, 1 to 5 portions of nanometer materials, 4 to 8 portions of stabilizing agent, 2 to 15 portions of filler, 0 to 1 portion of cross-linking agent, 1 to 5 portions of processing modifier and 3 to 10 portions of impact modifier are mixed and blended according to weight proportion, and then extruded by a mould. Compared with the prior art, the super-strong high temperature-resistant chlorinated polyvinyl chloride tubes has the advantages of being high in vicat softening point, being capable of meeting the high-temperature requirement of more than 120 DEG C, and having good anti-aging performance, antiflaming and insulation performance, and compression resistance, and long service life.

Description

technical field [0001] The invention relates to the technical field of non-metal building materials, in particular to a preparation method of a super-strong high-temperature-resistant chlorinated polyvinyl chloride pipe. Background technique [0002] With the advancement of science and technology, PP-R hot water pipes, PE-RT hot water pipes, PB hot water pipes, PE-X hot water pipes and PAP aluminum-plastic composite hot water pipes have been gradually developed to replace the steel pipes or cast iron we usually used before. pipes to carry hot water. [0003] Recently, the development of urban planning and construction as well as the cleanliness and beauty of the city require that the overhead high-voltage wires be buried underground. Due to the high-voltage cables and high voltage, they are prone to heat generation or high temperature due to instantaneous accidental short circuit. People usually use modified polymer Propylene (MPP), steel pipes or glass steel pipes are used...

AI Technical Summary

Problems solved by technology

[0003] Recently, the development of urban planning and construction as well as the cleanliness and beauty of the city require that the overhead high-voltage wires be buried underground. Due to the high-voltage cables and high voltage, they are prone to heat generation or high temperature due to instantaneous accidental short circuit. People usually use modified polymer Propylene (MPP), steel pipes or glass steel pipes are used as sheath pipes for high-voltage cables. MPP pipes or steel pipes need to be welded during construction, which is inconvenient for field work and relatively low in construction efficiency. High, but steel pipes are not corrosion-resistant, and their service life is generally only 15 to 30 years before they are damaged by corrosion. However, FRP adopts glass fiber winding coating process, which is easy to cause pollution during production and use. At the same time, FRP pipes are relatively brittle and not resistant to heavy It is also easy to be delaminated if pressed, knocked or collided, which will affect the service life

[0004] Because the high temperature Vicat softening point of the CPVC pipe produced by the prior art is only 93-110°C, although it is corrosion-resistant, aging-resistant, non-polluting, convenient for adhesive connection, and has good flame-retardant and antibacterial effects, it cannot meet the requirements of high-temperature, high-pressure hot water pipes. And high-voltage cable heavy pressure and vibration conditions greatly affect and restrict the wide use of CPVC pipes in hot water and power engineering