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Low-temperature-brittleness-resistant mine pipe and preparation method thereof

A technology of anti-low temperature and brittleness, which is applied in the field of PVC pipes and its preparation, can solve the problems of unsatisfactory low-temperature resistance of composite pipes, failure to meet the use requirements of mining pipes, and limited application range, etc., to improve thermal stability and improve Effect of improving mechanical strength and dispersion stability

Inactive Publication Date: 2017-05-24
宋志勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite pipes prepared in the above literature have the disadvantages of large surface resistance and poor antistatic properties. Once the pipe surface is rubbed, static electricity will be generated and gathered on the pipe surface. If it is used in coal mine production operations, it may cause fire when the static electricity is discharged. and gas explosion, unable to meet the requirements for the use of mining pipes, limiting its application range
In addition, the low temperature resistance of the composite pipes made in the above literature is also unsatisfactory.

Method used

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Examples

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Effect test

Embodiment Construction

[0018] A low-temperature brittle-resistant mining pipe, made of the following raw materials (kg): polyvinyl chloride 55, acetoxybutyl stearate 14, triethylene glycol diisocaprylate 12, zinc laurate 1.5 , barium laurate 1.5, microcrystalline paraffin 6, tetrahydrofurfuryl oleate 16, pearlite 22, pentaerythritol monooleate 8, montmorillonite 25, graphene oxide 20, diopside powder 21.

[0019] A preparation method of anti-low temperature brittle mining pipe, comprising the following steps:

[0020] (1) Add montmorillonite to 95% absolute ethanol according to the solid-to-liquid ratio of 1:15-25, stir well, and then add N-(β-aminoethyl )-γ-aminopropylmethyldimethoxysilane, heated in an oil bath to 70-75°C, stirred for 1-1.5h, cooled to room temperature, washed three times with ethanol and deionized water respectively, freeze-dried and pulverized To the nanometer particle size, sieve to obtain aminated nano-montmorillonite;

[0021] (2) Stir graphene oxide with water to make a gr...

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Abstract

The invention discloses a low-temperature-brittleness-resistant mine pipe and a preparation method thereof. The low-temperature-brittleness-resistant mine pipe is prepared from the following raw materials in parts by weight: 49-62 parts of polyvinyl chloride, 11-17 parts of butyl acetoxystearate, 10-15 parts of triethylene glycol di-2-ethylhexoate (triglycol dioctate), 1-2 parts of zinc laurate, 1-2 parts of barium laurate, 5-7 parts of microcrystalline wax, 14-19 parts of tetrahydrofurfuryl oleate, 18-26 parts of pearlife, 5-10 parts of pentaerythritol monooleate and 17-24 parts of diopside powder. Three cold-resistant plasticizers, i.e., the butyl acetoxystearate, the triethylene glycol di-2-ethylhexoate (triglycol dioctate) and the tetrahydrofurfuryl oleate are added and are matched with filler such as the pearlife and the diopside powder for use, so that not only are the cold tolerance and weather resistance of a material improved, but the mechanical strength of the material is also improved. The polyvinyl chloride (PVC) pipe prepared by the method is high in mechanical strength, good in weather resistance and excellent in cold tolerance; compared with PVC pipes in the prior art, the PVC pipe provided by the invention has greatly improved low temperature brittleness and has minimum working temperature reaching to -50 DEG C.

Description

technical field [0001] The invention relates to a PVC pipe and a preparation method thereof, in particular to a low-temperature brittle-resistant mining pipe and a preparation method thereof. Background technique [0002] Montmorillonite is a typical natural clay mineral, which has the advantages of high reserves, various types, low price and excellent structure. Montmorillonite also has good dispersion properties, and can be widely used in the polymer material industry as an additive for nano-polymer polymer materials to improve mechanical properties, dimensional stability, thermal stability and gas barrier properties, thereby enhancing polymer properties. The role of comprehensive physical properties, while improving the processing performance of materials, has broad application prospects. [0003] Zheng Yuying and Peng Chao used montmorillonite as the main raw material in their article "Research and Development of PVC-U / Montmorillonite Nanocomposite Pipes", and developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/10C08L91/06C08K13/02C08K5/101C08K5/098C08K3/34C08K5/103C08F292/00C08F220/18
CPCC08F292/00C08K2201/001C08K2201/014C08L27/06C08L2201/04C08L2203/18C08L2205/03C08L51/10C08L91/06C08K13/02C08K5/101C08K5/098C08K3/34C08K5/103C08F220/1804
Inventor 宋志勇
Owner 宋志勇
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