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Three-layer efficient bonded PVC (Polyvinyl Chloride) tube extrusion preparation method

A technology of PVC pipe and PVC resin, applied in the direction of tubular articles, applications, household appliances, etc., to achieve the effect of high tensile strength, convenient construction and excellent chemical stability

Inactive Publication Date: 2018-12-14
安徽博泰塑业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the prior art and provide a three-layer high-efficiency bonded PVC pipe extrusion preparation method

Method used

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  • Three-layer efficient bonded PVC (Polyvinyl Chloride) tube extrusion preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A three-layer high-efficiency bonded PVC pipe extrusion preparation method, the multi-layer PVC pipe includes an upper PVC resin layer, a middle grid-like reinforcement layer and a lower plastic film layer arranged in sequence;

[0033] The upper PVC resin layer is prepared from the following components in parts by weight: 140 parts of PVC, 0.5 parts of pearl micropowder, 8 parts of barium sulfate, 2 parts of stabilizer, 1 part of external lubricant, and 0.6 part of toughening agent;

[0034] The middle grid reinforcement layer adopts a grid reinforcement layer composed of warp threads and weft threads, and the weft threads are formed by combining and twisting at least one aramid fiber and at least one polyester fiber; the warp threads are made of short cotton linters Twisted with thermoplastic resin;

[0035] The lower plastic film layer is made of the following raw materials in parts by mass: 60 parts of polyvinyl alcohol, 15 parts of artemisia gum, 12 parts of hydrox...

Embodiment 2

[0053] Embodiment 2: three-layer high-efficiency bonded PVC pipe extrusion preparation method: the multilayer PVC pipe includes an upper PVC resin layer, a middle grid-like reinforcement layer and a lower plastic film layer arranged in sequence;

[0054] The upper PVC resin layer comprises the following components in parts by weight: 1160 parts of PVC, 1 part of pearl micropowder, 9 parts of barium sulfate, 3 parts of stabilizer, 2 parts of external lubricant, and 1.5 parts of toughening agent;

[0055] The middle grid reinforcement layer adopts a grid reinforcement layer composed of warp threads and weft threads, and the weft threads are formed by combining and twisting at least one aramid fiber and at least one polyester fiber; the warp threads are made of short cotton linters Twisted with thermoplastic resin;

[0056] The lower plastic film layer is made of the following raw materials in parts by mass: 70 parts of polyvinyl alcohol, 20 parts of artemisia gum, 18 parts of hy...

Embodiment 3

[0074] Embodiment 3: Three-layer high-efficiency bonded PVC pipe extrusion preparation method, the multilayer PVC pipe includes an upper PVC resin layer, a middle grid-shaped reinforcing layer and a lower plastic film layer arranged in sequence;

[0075] The upper PVC resin layer comprises the following components by weight: 1:50 parts of PVC, 0.7 parts of pearl micropowder, 8.5 parts of barium sulfate, 2.5 parts of stabilizer, 1.5 parts of external lubricant, and 1 part of toughening agent;

[0076] The middle grid reinforcement layer adopts a grid reinforcement layer composed of warp threads and weft threads, and the weft threads are formed by combining and twisting at least one aramid fiber and at least one polyester fiber; the warp threads are made of short cotton linters Twisted with thermoplastic resin;

[0077] The lower plastic film layer is made of the following raw materials in parts by mass: 65 parts of polyvinyl alcohol, 17 parts of artemisia gum, 15 parts of hydro...

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Abstract

The invention discloses a three-layer efficient bonded PVC (Polyvinyl Chloride) tube extrusion preparation method. A multi-layer PVC tube comprises an upper PVC resin layer, a middle grid reinforcinglayer and a lower plastic film layer in sequence. Compared with a conventional PVC tube, the PVC tube has excellent properties of high tension strength and the like, the lower plastic film layer has excellent waterproof and anti-corrosion properties, the bending properties of the tube can be ensured by wefts in middle-layer grids, warps ensure a tension rate, the upper-layer PVC has a relatively small density which accounts for 1 / 4-1 / 7 of that of a metal, the tube is excellent in electric insulating property and chemical stability, convenient to mount and construct, easy to repair and low in unit energy consumption, molding conditions can be provided as temperatures are continuously changed in an extrusion process, multiple times of thermal expansion and cold contraction are carried out, and materials can be tightly bonded through contraction and expansion.

Description

Technical field: [0001] The invention relates to the field of pipe preparation, in particular to a three-layer high-efficiency bonded PVC pipe extrusion preparation method. Background technique: [0002] PVC is a white powder with an amorphous structure, the degree of branching is small, the relative density is about 1.4, the glass transition temperature is 77-90°C, it begins to decompose at about 170°C, and it has poor stability to light and heat. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration and rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve the stability to heat and light. [0003] The molecular weight of industrially produced PVC is generally in the range of 50,000 to 110,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K3/30C08L29/04C08L5/00C08L1/28C08K3/36C08K5/098C08J5/18B29C47/06
CPCB29L2023/00C08J5/18C08K3/30C08K2003/3045C08K2201/011C08L29/04C08L2203/16C08L2205/025C08L2205/035C08L27/06C08L5/00C08L1/28C08K3/36C08K5/098
Inventor 张跃张友亮张龙徐光辉李明
Owner 安徽博泰塑业科技有限公司
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