High-strength and high-toughness polyvinyl chloride injection molded composition and preparation method thereof

A polyvinyl chloride, high-strength and high-toughness technology, which is applied in the formulation and preparation of high-strength and high-toughness polyvinyl chloride injection molding compositions, can solve the problems of easy decomposition and discoloration, low product strength, and low-temperature brittleness, and achieve tensile strength High efficiency, high equipment utilization rate and excellent flow performance

Inactive Publication Date: 2019-03-08
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of slow plasticization, easy decomposition and discoloration, low product strength and brittleness at low temperature in PVC during processing, the present invention proposes a high-strength and high-toughness polyvinyl chloride injection molding composition formula and preparation method to solve these existing problems

Method used

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  • High-strength and high-toughness polyvinyl chloride injection molded composition and preparation method thereof
  • High-strength and high-toughness polyvinyl chloride injection molded composition and preparation method thereof
  • High-strength and high-toughness polyvinyl chloride injection molded composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] The high-strength and high-toughness polyvinyl chloride pipe formula of the present embodiment, the weight ratio of its various components is as follows:

[0045]

[0046] The PVC resin 1 of this embodiment refers to the SG8 type ordinary PVC resin with a degree of polymerization of 700, and the addition amount is 90 parts.

[0047] The PVC resin 2 in this embodiment refers to a PVC resin with a degree of polymerization of 1300, and the addition amount is 5 parts.

[0048] The ACR-g-VC resin in this embodiment refers to a resin obtained by polymerizing polyacrylate nanolatex with vinyl chloride monomer. The degree of polymerization is equivalent to that of general PVC resin SG5 (the degree of polymerization is 1000). The addition amount is 5 parts.

[0049] The impact modifier of this embodiment is MBS resin, and the addition amount is 6 parts.

[0050] The composite stabilizer in this embodiment is selected from one or more composites of organotin, stearate, and ...

Embodiment 2

[0058] The high-strength and high-toughness polyvinyl chloride pipe formula of the present embodiment, the weight ratio of its various components is as follows:

[0059]

[0060] The PVC resin 1 of this embodiment refers to the SG8 type PVC general resin with a degree of polymerization of 700, and the addition amount is 80 parts.

[0061] The PVC resin 2 in this embodiment refers to a PVC resin with a degree of polymerization of 1300, and the addition amount is 10 parts.

[0062] The ACR-g-VC resin in this embodiment refers to a resin obtained by polymerizing polyacrylate nanolatex with vinyl chloride monomer. The degree of polymerization is equivalent to that of general PVC resin SG5 (the degree of polymerization is 1000). The addition amount is 10 parts.

[0063] The impact modifier of this embodiment is MBS resin, and the addition amount is 6 parts.

[0064] The composite stabilizer in this embodiment is selected from one or more composites of organotin, stearate, and...

Embodiment 3

[0072] The high-strength and high-toughness polyvinyl chloride pipe formula of the present embodiment, the weight ratio of its various components is as follows:

[0073]

[0074] The PVC resin 1 of this embodiment refers to the SG8 type PVC common resin with a degree of polymerization of 700, and the addition amount is 70 parts.

[0075] The PVC resin 2 of this embodiment refers to the SG8 type PVC general resin with a degree of polymerization of 1300, and the addition amount is 15 parts.

[0076] The ACR-g-VC resin in this embodiment refers to a resin obtained by polymerizing polyacrylate nanolatex with vinyl chloride monomer. The degree of polymerization is equivalent to that of general PVC resin SG5 (the degree of polymerization is 1000). The addition amount is 15 parts.

[0077] The impact modifier of this embodiment is MBS resin, and the addition amount is 6 parts.

[0078] The composite stabilizer in this embodiment is selected from one or more composites of organo...

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Abstract

The invention discloses a high-strength and high-toughness polyvinyl chloride injection molded composition and a preparation method thereof. The composition comprises, by weight, 50-90 parts of PVC (polyvinyl chloride) resin 1, 5-20 parts of PVC resin 2, 5-40 parts of ACR-g-VC (acrylic graft vinyl chloride) resin, 3-10 parts of parts of impact modifier, 4-6 parts of compound stabilizer, 0.5-2 parts of internal lubricant, 0.5-1.2 parts of external lubricant, 1-5 parts of fillers, 1-3 parts of plasticizer and 0.1-1 part of antioxygen. The preparation method includes: weighing the ingredients according to a formula about weight ratios, placing in a high-speed mixer, mixing to obtain a polyvinyl chloride mixture, adding the polyvinyl chloride mixture into a tapered double-screw extruder, melting, extruding, pelletizing and packaging. Compared with a product prepared according to a formula adopting normal SG8 type PVC resin, the high-strength and high-toughness polyvinyl chloride injectionmolded composition has the advantages that plasticizing time can be shortened by more than 20%, and impact strength can be enhanced by more than 10 times.

Description

technical field [0001] The invention belongs to the field of polyvinyl chloride polymer materials, and in particular relates to a high-strength and high-toughness polyvinyl chloride injection molding composition formula and a preparation method thereof. Background technique [0002] Polyvinyl chloride is a polar non-crystalline high polymer, which has the advantages of acid and alkali corrosion resistance, good electrical insulation, good comprehensive mechanical properties, etc., and is low in price and widely used, but it is resistant to light and heat. Poor stability, easy to decompose; poor impact resistance, brittle under impact, if used to produce PVC pipe fittings, low strength, brittle. Therefore, users generally do not want to use PVC pressure pipes because the parts of the pipe fittings are weak points and are easily broken. [0003] Chinese patent CN104031332A discloses a novel high-fluidity rigid PVC material and a preparation method thereof. The main component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/00C08L51/04C08L91/06C08K5/098C08K3/26C08K3/11
CPCC08K2003/265C08K2201/011C08L27/06C08L2201/08C08L2205/025C08L2205/035C08L51/003C08L51/04C08L91/06C08K5/098C08K3/26C08K3/11
Inventor 文仕敏陈华佘国华缑可贞伍洋徐伟
Owner YIBIN TIANYUAN GRP CO LTD
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