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Flame-retardant rubber toughened nylon corrugated-pipe material used for rail transit and preparation method thereof

A rubber toughening and rail transportation technology, applied in the field of nylon corrugated pipe materials, can solve the problems of high price, poor product stability and short service life of nylon corrugated pipes, achieve good flame retardancy, improve stability and reduce adverse effects Effect

Inactive Publication Date: 2018-02-16
滁州远方车船装备工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since wire harnesses and cables in rail vehicles work in a closed environment with long-term vibration and high safety requirements, this requires nylon bellows used in locomotives to have good damping and flame retardancy. Nylon corrugated pipe is expensive, has no flame retardancy, poor product stability, poor water absorption, and short service life. It needs to be compounded and modified with other raw materials to improve its performance

Method used

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Experimental program
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Embodiment Construction

[0018] A flame-retardant rubber toughened nylon bellows material for rail transit, comprising the following raw materials in weight percentage:

[0019] 65% nylon 66 resin, 5% nitrile rubber, 10% polymer vesicles loaded with flame retardant, 1% stearic acid, 0.1% antioxidant, 1% glass fiber, 0.1% vulcanizing agent PDM.

[0020] Wherein the preparation method of the polymer vesicle of load flame retardant is: poly(isoprene-block-ethylene oxide) block copolymer is dropped into N, in N-dimethylformamide, stir to its Completely dissolve, and prepare an amphiphilic block copolymer solution with a concentration of 50g / L, then add an organophosphorus flame retardant equal to the weight of the amphiphilic block copolymer, stir and mix at a speed of 300 rpm for 2 hours, and then keep Add an appropriate amount of water to the solution system in the stirring state, continue to stir and mix for 15 hours, then dialyze for 10 hours, change the water every 1 hour, centrifuge and precipitate ...

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Abstract

The invention discloses a flame-retardant rubber toughened nylon corrugated-pipe material used for rail transit and a preparation method thereof. The flame-retardant rubber toughened nylon corrugated-pipe material comprises the following raw materials in percentages by weight: 65 to 80% of nylon resin, 5 to 10% of toughening rubber, 10 to 20% of flame retardant loaded polymer vesicles, 1 to 2% ofstearic acid, 0.1 to 0.5% of an anti-oxidant, 1 to 5% of an inorganic filling material and 0.1 to 0.5% of a vulcanizing agent PDM.

Description

technical field [0001] The invention relates to the technical field of nylon bellows materials, in particular to a flame-retardant rubber-toughened nylon bellows material for rail transit and a preparation method thereof. Background technique [0002] The bellows is a cylindrical thin-walled elastic shell with transverse corrugations, which has many functions such as conversion, compensation, connection and energy storage. Compared with pipes made of the same material, corrugated pipes have the advantages of light weight, beautiful appearance, durability, low cost, and good elasticity. They are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other fields. When in use, the open end of the bellows is fixed, and the sealed end is in a free state. Under the action of internal or external pressure, it changes along the longitudinal or radial direction of the pipe, which plays the role of shock absorption and maintaining t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L9/02C08K13/06C08K9/12C08K5/09C08K7/14C08K5/49
CPCC08L77/06C08L2201/02C08L9/02C08K13/06C08K9/12C08K5/09C08K7/14C08K5/49
Inventor 戴新民葛正兵
Owner 滁州远方车船装备工程有限公司
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