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A kind of low temperature toughened PVC drainage pipe material and its preparation method and application

A drainage pipe and toughening technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of low impact strength, hardening and brittleness, brittle cracking, etc., achieve low temperature resistance and toughness enhancement, improve toughness, and benefit scattered effect

Active Publication Date: 2016-09-28
HENAN LIANSU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC also has some defects or deficiencies in performance, among which brittleness is one of the biggest shortcomings of PVC plastics.
Rigid PVC plastics have poor toughness and low impact strength at room temperature, and even worse toughness at low temperatures. When the temperature is lowered, they rapidly harden and become brittle, and are easily brittle when impacted. Applications in Low Temperature Environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use 100 parts by weight of montmorillonite and 6 parts by weight of long-carbon chain alkyl quaternary ammonium salt to stir evenly at 30°C to obtain a mixture for later use; heat the obtained mixture to 50°C and perform solid phase stirring for 1min, then cool to room temperature to obtain Modified montmorillonite: the modified montmorillonite of 100 parts by weight and the MBS of 10 parts by weight are prepared by emulsion polymerization to form a core-shell structure composite modified particle with montmorillonite as the core and MBS as the shell, The specific operation steps are: put the above-mentioned modified montmorillonite in the reactor of the condensing device, add deionized water, stir evenly, then add emulsifier, MBS, heat to 80°C and stir to disperse evenly, add conventional Initiator, react at 80°C for 2 hours, keep stirring, and cool to room temperature after the reaction, to obtain composite modified particles with montmorillonite as the core and MBS as...

Embodiment 2

[0027] Use 100 parts by weight of montmorillonite and 8 parts by weight of long-carbon chain alkyl quaternary ammonium salt to stir evenly at 50°C to obtain a mixture for later use; heat the obtained mixture to 70°C and perform solid phase stirring for 4 minutes, and then cool to room temperature to obtain Modified montmorillonite: the modified montmorillonite of 100 parts by weight and the MBS of 15 parts by weight are prepared by emulsion polymerization to form a core-shell structure composite modified particle with montmorillonite as the core and MBS as the shell, The specific operation steps are: put the above-mentioned modified montmorillonite in the reactor of the condensing device, add deionized water, stir evenly, then add emulsifier, MBS, heat to 85°C and stir to disperse evenly, add conventional Initiator, react at 85°C for 3 hours, keep stirring, and cool to room temperature after the reaction, to obtain composite modified particles with montmorillonite as the core a...

Embodiment 3

[0031] Use 100 parts by weight of montmorillonite and 10 parts by weight of long-carbon chain alkyl quaternary ammonium salt to stir evenly at 100°C to obtain a mixture for later use; heat the obtained mixture to 100°C and perform solid phase stirring for 8 minutes, and then cool to room temperature to obtain Modified montmorillonite: the modified montmorillonite of 100 parts by weight and the MBS of 20 parts by weight are prepared by emulsion polymerization to form a core-shell structure composite modified particle with montmorillonite as the core and MBS as the shell, The specific operation steps are: put the above-mentioned modified montmorillonite in the reactor of the condensing device, add deionized water, stir evenly, then add emulsifier, MBS, heat to 90°C and stir to disperse evenly, add conventional Initiator, react at 90°C for 3 hours, keep stirring, and cool to room temperature after the reaction, to obtain composite modified particles with montmorillonite as the cor...

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PUM

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Abstract

The invention relates to a low-temperature toughened PVC drainage pipe material and its preparation method and application. The PVC drainage pipe material is prepared by the following preparation method: using montmorillonite and methyl methacrylate-butadiene by emulsion polymerization ‑Styrene copolymer is used as a raw material to prepare composite modified particles with a core-shell structure; then the composite modified particles are melt-blended with PVC to prepare ternary nanocomposites; the present invention selects specific nanoparticles and elastic The composite modified particles are organically combined to form a core-shell structure composite modified particle with montmorillonite as the core and MBS as the shell, and then the composite modified particle is melt-blended with PVC resin to make the composite modified particle well dispersed in the PVC matrix. Then the PVC is toughened and strengthened.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a low-temperature toughened PVC drainage pipe material and a preparation method and application thereof. Background technique [0002] The raw material polyvinyl chloride (PVC) used in PVC-U drainage pipe is a general-purpose plastic variety with excellent comprehensive performance, low price and wide source of raw materials. Its output and consumption are second only to polyethylene, and it has been widely used in various fields. However, PVC also has some defects or deficiencies in performance, among which brittleness is one of the biggest shortcomings of PVC plastics. Rigid PVC plastics have poor toughness and low impact strength at room temperature, and even worse toughness at low temperatures. When the temperature is lowered, they rapidly harden and become brittle, and are easily brittle when impacted. applications in low temperature environments. Therefore, improvin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K9/10C08K9/04C08K3/34F16L9/12
Inventor 代营伟李锦松
Owner HENAN LIANSU IND
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