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Novel modified polyvinyl chloride pipe fitting and preparation method thereof

A technology for polyvinyl chloride and pipe fittings is applied in the field of new modified polyvinyl chloride pipe fittings and their preparation, which can solve problems such as pipe fitting deformation, and achieve the effects of good weather resistance, high Vicat softening point and good application prospects.

Inactive Publication Date: 2017-04-19
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used in harsh special environments such as strong outdoor light and high temperature for a long time (such as Xinjiang and Hainan in my country, Southeast Asia, the Middle East and other regions abroad), it is easy to have problems such as deformation, rupture, and fading of pipe fittings, which limits its use in special environments. application

Method used

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  • Novel modified polyvinyl chloride pipe fitting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The pipe fitting formulation is made of the following components in parts by weight:

[0043] PVC resin (SG-8) 100 parts, heat stabilizer (calcium zinc stabilizer) 5.5 parts, processing modification aid (ACR) 2.0 parts, silicate-like modifier (ultrafine fibrous wollastonite powder) 20 parts parts, heat-resistant modifier (α-methylstyrene-based polymer) 5 parts, lubricant (polyethylene wax) 1.5 parts, lubricant (polyethylene oxide) 0.2 parts, lubricant (calcium stearate) 0.5 parts parts, 0.2 parts of antioxidant, 2.5 parts of pigment (titanium dioxide).

Embodiment 2

[0045] The pipe fitting formulation is made of the following components in parts by weight:

[0046] PVC resin (SG-7) 100 parts, heat stabilizer (calcium zinc stabilizer) 6.5 parts, processing modification aid (ACR) 3.0 parts, silicate-like modifier (ultra-fine fibrous wollastonite powder) 30 parts parts, heat-resistant modifier (α-methylstyrene-based polymer or) 10 parts, lubricant (polyethylene wax) 2.0 parts, lubricant (polyethylene oxide) 0.2 parts, lubricant (calcium stearate) 1.0 parts, 0.2 parts of antioxidant, 2.5 parts of pigment (titanium dioxide).

Embodiment 3

[0048] The pipe fitting formulation is made of the following components in parts by weight:

[0049] PVC resin (SG-8) 100 parts, heat stabilizer (calcium zinc stabilizer) 6 parts, processing modification aid (ACR) 0.5 parts, silicate-like modifier (ultra-fine fibrous wollastonite powder) 10 parts parts, heat-resistant modifier (α-methylstyrene-based polymer) 5 parts, lubricant (polyethylene wax) 1.5 parts, lubricant (polyethylene oxide) 0.2 parts, lubricant (calcium stearate) 0.5 parts part, 0.2 part of antioxidant, 0.01 part of pigment (titanium dioxide).

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Abstract

The invention relates to a novel modified polyvinyl chloride pipe fitting and a preparation method thereof. The polyvinyl chloride pipe fitting is composed of the following raw materials in parts by weight: 100 parts of PVC resin, 10-30 parts of silicate-like modifier, 5-10 parts of heat-resistant modifier and 1-5 parts of processing aids, wherein the silicate-like modifier is a superfine fibre-shaped wollastonite powder subjected to surface treatment; and the heat-resistant modifier is one or more of alpha-methyl styryl polymer and alpha-styryl polymers. The polyvinyl chloride pipe fitting provided by the invention is high in physical and mechanical property, has a high Vicat softening point, and is high in weather resistance, dimensional stability and smooth finish.

Description

technical field [0001] The invention relates to the technical field of modification, processing and application of polymer materials, in particular to a novel modified polyvinyl chloride pipe fitting and a preparation method thereof. Background technique [0002] At present, the world's PVC plastic products are mainly hard, and PVC pipe fittings are the representative varieties of rigid polyvinyl chloride injection molding. Polyvinyl chloride resin exhibits hard and brittle properties due to the polar bonds between macromolecules. Due to the poor impact and low temperature resistance of rigid polyvinyl chloride, an impact modifier must be blended in the resin. The impact modifiers used in the prior art are generally CPE (chlorinated polyvinyl chloride), MBS (formaldehyde At the same time, in order to reduce costs, improve product rigidity, reduce shrinkage, etc., it is often necessary to add fillers to the resin, and the fillers used are generally ground and precipitated C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/16C08L25/06C08K13/06C08K9/06C08K9/04C08K7/10C08K5/098C08K3/22
CPCC08L27/06C08K2201/003C08K2201/004C08L2201/08C08L2203/18C08L2205/035C08L25/16C08K13/06C08K9/06C08K9/04C08K7/10C08K5/098C08K2003/2241C08L25/06
Inventor 王绍雄黄特立宋科明
Owner GUANGDONG LIANSU TECH INDAL
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