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Impact resistance modifying agent of PVC-M tubing and pipe fitting

A modifier, high impact resistance technology, applied in the field of processing aids for PVC products, can solve the limited improvement of impact resistance, can not meet the high strength, high impact resistance, PVC rigidity of PVC-M pipes and pipe fittings The problem of low impact strength of products

Inactive Publication Date: 2011-03-23
NORTEKEXAP XIAMEN PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The impact strength of rigid PVC products is not high. At present, it is mainly added by adding CPE (chlorinated polyethylene), MBS (butadiene and styrene, methyl methacrylate copolymer) or high impact ACR (acrylate copolymer) to improve the impact strength of products
However, the improvement of the impact resistance of CPE products is limited; high impact ACR and MBS resins can maintain a certain rigidity of the product and improve the impact resistance of the product. However, simply adding MBS or ACR still cannot meet the high strength, high strength, and high impact requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] According to the above process, based on 100% weight of polymerized monomers, 1,4-hexadiene 30%, styrene 25%, ethyl acrylate 15%, acrylate-2-ethyl-hexyl 15%, methyl methacrylate Esters 15%. The surfactant adopts sodium dodecylbenzenesulfonate, which accounts for 1% of the total weight of the polymer monomer, and the initiator adopts potassium persulfate, which accounts for 0.5% of the total weight of the polymer monomer, and the deionized water consumption is the total weight of the polymer monomer. 120% by weight. Add 5% high-density polyethylene to the above-mentioned copolymer resin powder for blending modification, and then make PVC-M pipes and pipe fittings anti-impact modifiers.

Embodiment 2

[0013] According to the above process, based on 100% weight of polymerized monomers, 1,4-hexadiene 35%, styrene 20%, ethyl acrylate 10%, acrylate-2-ethyl-hexyl 15%, methyl methacrylate Esters 20%. The surfactant adopts sodium dodecylbenzenesulfonate, which accounts for 2% of the total weight of the polymer monomers, and the initiator adopts potassium persulfate, which accounts for 0.7% of the total weight of the polymer monomers, and the deionized water consumption is the total weight of the polymer monomers. 130% by weight. Add 10% high-density polyethylene to the above-mentioned copolymer resin powder for blending modification, and then make PVC-M pipe and pipe fitting impact modifier.

Embodiment 3

[0015] According to the above process, based on 100% weight of polymerized monomers, 1,4-hexadiene 40%, styrene 15%, ethyl acrylate 15%, acrylate-2-ethyl-hexyl 10%, methyl methacrylate Esters 20%. The surfactant adopts sodium dodecylbenzenesulfonate, which accounts for 1.5% of the total weight of polymer monomers, and the initiator adopts potassium persulfate, which accounts for 0.9% of the total weight of polymerized monomers, and the amount of deionized water is the total weight of polymerized monomers 140%. Add 15% high-density polyethylene to the above-mentioned copolymer resin powder for blending modification, and then make PVC-M pipe and pipe fitting impact modifier.

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PUM

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Abstract

The invention discloses a high impact resistance modifying agent of PVC-M tubing and pipe fitting, which is a blending high impact resistant and flexible material modified by a copolymer. Calculated by 100% weight of the copolymerization monomer, the impact resistance modifying agent of the PVC-M tubing and pipe fitting is prepared by a method comprising the following steps: adding surfactants and deionized water into the mixture of 15 to 50% of 1,4-hexadiene, 15-50% of styrene, 10-35% of ethyl acrylate, 10-30% of 2-ethyl-hexyl acrylate, and 15-40% of methyl methacrylate; then initiating the mixture by an initiator for the emulsion copolymerization reaction to generate the copolymer; and adding the copolymerization product into high density polyethylene which is 5-25% of total weight of the copolymer for the blending modification after the condensation and the drying. The high impact resistance modifying agent of the PVC-M tubing and pipe fitting of the invention has higher tensile property and impact resistance compared with the impact resistance modifying agents such as methylmethacrylate butadiene styrene copolymer (MBS) and acrylate copolymer resin (ACR) which are used widely currently.

Description

technical field [0001] The invention belongs to a processing aid for PVC products, in particular to a high-strength, high-impact modifier applied to PVC-M (impact-modified polyvinyl chloride for water supply) pipes and fittings. technical background [0002] The impact strength of rigid PVC products is not high. At present, it is mainly added by adding CPE (chlorinated polyethylene), MBS (butadiene and styrene, methyl methacrylate copolymer) or high impact ACR (acrylate Copolymer) to improve the impact strength of the product. However, the improvement of the impact resistance of CPE products is limited; high impact ACR and MBS resins can maintain a certain rigidity of the product and improve the impact resistance of the product. However, simply adding MBS or ACR still cannot meet the high strength, high strength, and High impact requirements. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies in the prior art and provide ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L47/00C08L25/08C08L33/12C08L23/06
Inventor 郑集文李建阳郑华博洪锦滨
Owner NORTEKEXAP XIAMEN PLASTIC TECH