High-impact high-flowability PVC (polyvinyl chloride) formula and preparation method thereof

A high-fluidity, high-impact technology, applied in the field of PVC, can solve the problems of high melt viscosity, high processing temperature, poor thermal stability, etc., achieve good fluidity, reduce processing temperature, and improve flow performance

Active Publication Date: 2017-08-22
YIBIN TIANYUAN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high processing temperature, high melt viscosity and poor thermal stability in the processing of PVC, the present invention proposes a high-impact and high-fluidity formula and its preparation method to solve the above-mentioned problems

Method used

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  • High-impact high-flowability PVC (polyvinyl chloride) formula and preparation method thereof
  • High-impact high-flowability PVC (polyvinyl chloride) formula and preparation method thereof
  • High-impact high-flowability PVC (polyvinyl chloride) formula and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0046] The high-impact high-flow PVC formulation of the present embodiment consists of the following components in parts by weight:

[0047] PVC resin (SG5): 85 parts; ACR-g-VC resin: 5 parts

[0048] PVC fine powder: 10 parts; composite stabilizer: 3 parts

[0049] Internal lubricant: 0.5 parts External lubricant: 0.5 parts

[0050] Calcium carbonate: 10 parts.

[0051] The ACR-g-VC resin of this embodiment is a graft copolymer of vinyl chloride and n-butyl acrylate, and its degree of polymerization is equivalent to that of SG5; PVC fine powder is a low-molecular-weight polyvinyl chloride with a particle size less than 20um and a degree of polymerization of 300-800 . The composite stabilizer is selected from any one or more of organic tin, calcium stearate, barium stearate, cadmium stearate, zinc stearate, and magnesium stearate. The internal lubricant is stearic acid, and the external lubricant is oxidized polyethylene wax; the filler is nanometer calcium carbonate.

[...

Embodiment 2

[0055] The high-impact high-flow PVC formulation of the present embodiment consists of the following components in parts by weight:

[0056] PVC resin (SG5): 47 parts; ACR-g-VC resin: 50 parts;

[0057] PVC fine powder: 3 parts; composite stabilizer: 3.5 parts;

[0058] Internal lubricant: 0.5 parts; External lubricant: 0.5 parts;

[0059] Calcium carbonate: 15 parts.

[0060] The ACR-g-VC resin is a graft copolymer of vinyl chloride and n-butyl acrylate, and its degree of polymerization is equivalent to that of SG5. The PVC fine powder is low molecular weight polyvinyl chloride with a particle size of less than 20um and a degree of polymerization of 300-800.

[0061] The composite stabilizer is selected from one or more composites of organotin, calcium stearate, barium stearate, cadmium stearate, zinc stearate and magnesium stearate.

[0062] The internal lubricant of the present embodiment is stearic acid, and the external lubricant is oxidized polyethylene wax.

[0063...

Embodiment 3

[0067] The high-impact high-flow PVC formulation of the present embodiment consists of the following components in parts by weight:

[0068] PVC resin (SG5): 74 parts; ACR-g-VC resin: 20 parts

[0069] PVC fine powder: 6 parts; composite stabilizer: 3.5 parts

[0070] Internal lubricant: 0.5 parts; External lubricant: 0.5 parts

[0071] Calcium carbonate: 10 parts.

[0072] The ACR-g-VC resin in this example is a graft copolymer of vinyl chloride and n-butyl acrylate, and its degree of polymerization is equivalent to that of general-purpose SG5 resin.

[0073] The PVC fine powder in this embodiment is low molecular weight polyvinyl chloride with a particle size of less than 20 um and a degree of polymerization of 300-800. The composite stabilizer in this embodiment is selected from one or more composites of organotin, calcium stearate, barium stearate, cadmium stearate, zinc stearate, and magnesium stearate.

[0074] The internal lubricant is stearic acid, and the external...

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Abstract

The invention discloses a high-impact high-flowability PVC (polyvinyl chloride) formula and a preparation method thereof. The high-impact high-flowability PVC formula is prepared from the following ingredients in parts by weight: 60 to 95 parts of PVC resin, 3 to 50 parts of ACR-g-VC resin, 3 to 15 parts of PVC fine powder, 2 to 5 parts of composite stabilizing agents, 0.5 to 2 parts of inner lubricating agents, 0.5 to 1 part of outer lubricating agents and 20 to 50 parts of calcium carbonate. A conventional extrusion process is used; low-polymerization-degree PVC fine powder and ACR-g-VC resin (chloroethylene-n-butyl acrylate graft copolymers) are added; the inner plasticization effects of low-polymerization-degree PVC resin and the chloroethylene-n-butyl acrylate graft copolymers is mainly utilized; the plasticization performance is improved in a cooperated way; the plasticization time is shortened; meanwhile, the anti-impact performance of the plastic product is obviously improved.

Description

technical field [0001] The invention relates to the field of PVC, in particular to a PVC formula with high impact resistance and high fluidity and a preparation method thereof. Background technique [0002] Polyvinyl chloride is one of the five general-purpose plastic raw materials, which is relatively easy to process and has good comprehensive mechanical properties. However, the processing temperature is relatively high, usually at 160°C, and PVC has poor thermal stability. When the temperature is higher than 150°C, it is easy to decompose and release HCl, which makes the product discolored and has poor impact strength. Therefore, if the formula is improved, the raw materials are easy to be plasticized, and the processing temperature is lowered, the performance of the product will be improved. [0003] Chinese patent CN104031332A high-fluidity rigid polyvinyl chloride material and its preparation method is to add a solid wetting agent for hot melt, extrude and granulate th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/00C08L23/30C08K13/02C08K3/26C08K5/09
CPCC08K2003/265C08K2201/011C08K2201/014C08L27/06C08L51/003C08L2201/08C08L2205/025C08L2205/035C08L23/30C08K13/02C08K3/26C08K5/09
Inventor 文仕敏佘国华颜华缑可贞
Owner YIBIN TIANYUAN GRP CO LTD
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