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U-PVC plastic, pipe fitting made of U-PVC plastic and preparing method of pipe fitting

A technology of rigid polyvinyl chloride and plastic pipe fittings, applied in the field of rigid polyvinyl chloride (U-PVC) plastic and its pipe fittings and production, can solve the problems of influence, unfavorable product performance, poor environment and human health, etc. Improve overall quality, reduce dosage, and improve the effect of processing technology

Active Publication Date: 2015-11-25
LIANSU TECH DEV GUIYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the addition of the o-phthalic liquid plasticizer will not only cause adverse effects on the environment and human health, but also cause adverse effects on the performance of the product

Method used

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  • U-PVC plastic, pipe fitting made of U-PVC plastic and preparing method of pipe fitting
  • U-PVC plastic, pipe fitting made of U-PVC plastic and preparing method of pipe fitting
  • U-PVC plastic, pipe fitting made of U-PVC plastic and preparing method of pipe fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. The raw material components of rigid polyvinyl chloride plastic pipe fittings that do not contain o-phthalic solid plasticizers are selected and accurately weighed according to the three formulas in Table 1. Wherein, the solid plasticizer is a compound formed by the copolymerization reaction of polyether and alcohol ester, or one or more mixtures of complex ester compounds.

[0042] The polyvinyl chloride resin is prepared by a suspension method, the residual amount of vinyl chloride monomer in the polyvinyl chloride resin is less than 1.0 mg / kg, and the viscosity of the polyvinyl chloride resin is 50ml / g-110ml / g.

[0043] The heat stabilizer is an environment-friendly calcium-zinc stabilizer; further preferably, the stabilizer is an environment-friendly powdery or granular composite calcium-zinc stabilizer, and the mass percentages of calcium and zinc in the stabilizer are less than 1.5%.

[0044] The processing modification aid is one or a mixture of methyl methac...

Embodiment 2

[0056] The research of embodiment 2 rigid polyvinyl chloride plastic pipe fitting formula

[0057] 1. Effect of solid plasticizer content on rigid PVC plastic pipe fittings

[0058] (1) Prepare U-PVC plastic pipe fittings according to the production method described in Example 1 according to the formula in Table 3.

[0059] Wherein, the polyvinyl chloride resin is prepared by a suspension method, the residual amount of vinyl chloride monomer in the polyvinyl chloride resin is less than 1.0 mg / kg, and the viscosity of the polyvinyl chloride resin is 50ml / g-110ml / g;

[0060] The product G-P20B of Zhongshan Gusheng Chemical Industry Co., Ltd. is a compound formed by the copolymerization reaction of polyether and alcohol ester.

[0061] The thermal stabilizer is an environment-friendly composite calcium-zinc stabilizer, and the mass percentages of calcium and zinc in the stabilizer are all less than 1.5%;

[0062] The processing modification aid is a methyl methacrylate copoly...

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Abstract

The invention discloses U-PVC plastic, a pipe fitting made of the U-PVC plastic and a preparing method of the pipe fitting. The U-PVC plastic is prepared from, by mass, 100 parts of PVC resin, 0.5-5 parts of solid plasticizer, 1-6 parts of heat stabilizer, 1-5 parts of processing performance additive, 2-10 parts of anti-shock performance additive and 0.1-2 parts of lubricant. The solid plasticizer is a compound formed by copolymerization of polyether and alcohol ester or one or a mixture of compound ester compounds. The U-PVC plastic can be well applied to preparation of the U-PVC pipe fitting, and the processing requirement is met; the solid plasticizer is a non-toxic high-molecular polymer, is good in compatibility with PVC, cannot dissolve out to move to the surface of a product in the using process and can obviously improve the rigidity strength of materials and the vicat and hydraulic performance of the product, and the overall quality of the product can be improved.

Description

technical field [0001] The invention belongs to the technical field of U-PVC plastic pipe fittings. More specifically, it relates to a rigid polyvinyl chloride (U-PVC) plastic, a pipe fitting and a manufacturing method thereof. Background technique [0002] Rigid polyvinyl chloride (U-PVC) plastic pipe fittings are a general term for parts and accessories that play the roles of connection, control, direction change, diversion, sealing, support, etc. in the piping system. Compared with pipes, pipe fittings have higher requirements on comprehensive processing performance, especially high requirements on processing fluidity. On the other hand, they have high requirements on hardness and pressure resistance. [0003] At present, in order to make up for the problems of insufficient processing flow and poor plasticization, the plasticizers added to the formula of rigid polyvinyl chloride (U-PVC) plastic pipe fittings are basically liquid ortho-phthalic plasticizers, especially th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L71/00C08L33/10C08L51/04C08L23/06C08K5/098B29C47/92B29C45/76B29C48/92
Inventor 徐政委宋科明
Owner LIANSU TECH DEV GUIYANG
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