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

A technology of chlorinated polyvinyl chloride and polyvinyl chloride resin, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of non-corrosion-resistant service life, high cost, and easy delamination of steel pipes, and achieve flame-retardant insulation and The effect of good compressive performance, improved impact strength and simple preparation process

Active Publication Date: 2011-07-27
SHANGHAI YUANZHOU PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 gla

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] a. Initial mix

[0029] 1. Mix 5 kg of bismaleimide with 5 kg of ABS, 5 kg of acrylic resin and 1.5 kg of polyester compound acid, heat and stir for 6 minutes, stop stirring when the temperature reaches 120°C, and then cool the material temperature to 45°C Sent to the next process for blending;

[0030] 1. Polycarbonate and acrylonitrile-butadiene-styrene graft were dried at 100°C for 3 hours respectively, then each weighed 6 kg and mixed with 2 kg of styrene-maleic anhydride copolymer, heated and stirred for 8 Minutes, when the temperature reaches 100°C, add 100 kg of chlorinated polyvinyl chloride resin with a chlorine content of 65% and a degree of polymerization of 1000 and continue stirring, stop stirring when the temperature reaches 125°C, and then cool the material temperature to 45°C Sent to the next process for blending;

[0031] b. Blending

[0032] Mix the above-mentioned initial mixed raw materials and heat and stir for 4 minutes. When the temperature...

Embodiment 2

[0036] a. Initial mix

[0037] 1. Mix 6 kg of bismaleimide with 8 kg of ABS, 7 kg of acrylic resin and 1.2 kg of ethylene-vinyl acetate copolymer, heat and stir for 7 minutes, stop stirring when the temperature reaches 120 ° C, and then cool the material temperature Send to the next process for blending at 45°C;

[0038] 1. Dry polyamide and polyoxymethylene at 100°C for 3 hours respectively, then weigh 6 kg each and add 3 kg of styrene-maleic anhydride graft and 1.5 kg of acrylonitrile-butadiene-styrene graft Mix, heat and stir for 7 minutes, when the temperature reaches 100°C, add 75 kg of chlorinated polyvinyl chloride resin with a chlorine content of 67%, a degree of polymerization of 1000, and 25 kg of a five-type polyvinyl chloride resin with a degree of polymerization of 1200 to continue Stir, stop stirring when the temperature reaches 125°C, then cool the material temperature to 48°C and send it to the next process for blending;

[0039] b. Blending

[0040] Mix ...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C08L27/24C08L27/06C08L55/02C08L33/00C08L59/00C08L69/00C08L77/00C08K13/02B29C47/92F16L9/12B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/9258B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904B29C2948/92933
Inventor 张双全周文忠王锡臣
Owner SHANGHAI YUANZHOU PIPE
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