Material special for plastic pipes and preparation method of continuous-fiber-cloth-enhanced plastic pipe

A technology of plastic pipes and continuous fibers, which is applied in the field of preparation of special materials for plastic pipes and continuous fiber cloth reinforced plastic pipes, can solve the problems that the tensile strength, impact resistance strength, and strength and toughness of plastic pipes cannot be effectively improved, etc., Achieve the effects of inhibiting creep and stress relaxation damage, long service life and less equipment investment

Active Publication Date: 2017-05-03
SHANGHAI QINGYUAN PIPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When short fibers are used to modify plastic pipes, the short fibers exist in the form of "zero-dimensional" particles in the matrix resin, and their mechanical properties are isotropic, which can improve the rigidity of the pipes, but cannot effectively improve the plastic pipes. Tensile strength and impact strength; when continuous fiber bundles are used to enhance and modify plastic pipes, the fiber bundles exist in the form of a one-dimensional structure in the resin, which can improve the tensile strength and impact strength of the pipe in a single direction. but cannot improve strength and toughness along other directions

Method used

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  • Material special for plastic pipes and preparation method of continuous-fiber-cloth-enhanced plastic pipe
  • Material special for plastic pipes and preparation method of continuous-fiber-cloth-enhanced plastic pipe
  • Material special for plastic pipes and preparation method of continuous-fiber-cloth-enhanced plastic pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Plastic pipe special material ingredients:

[0042] HDPE resin: 100 kg;

[0043] POE: 3kg;

[0044] EVA: 3 kg;

[0045] Silane coupling agent: 2 kg;

[0046] Polyethylene wax: 0.3 kg;

[0047] Zinc stearate: 0.3 kg;

[0048] Antioxidant 168: 0.1 kg;

[0049] Nucleating agent: 0.1 kg.

[0050] Firstly, pre-coat PE resin on a continuous fiber cloth with a certain warp and weft density, and reserve it; HDPE, POE, EVA, silane coupling agent, polyethylene wax, zinc stearate, antioxidant 168, and nucleating agent are prepared according to the above The ratio is added to the high-speed mixing mixer in turn and mixed evenly to obtain special pipe materials; the special materials enter the main extruder and auxiliary extruder respectively, and meet with the continuous fiber cloth passing through the die at the mouth of the die. Calibrate, cool, form, and finally obtain continuous fiber cloth reinforced plastic pipes.

Embodiment 2

[0052]Plastic pipe special material ingredients:

[0053] PP resin: 100 kg;

[0054] Inorganic powder: 30 kg;

[0055] EVA: 2 kg;

[0056] EPDM: 2 kg;

[0057] Aluminate coupling agent: 2 kg;

[0058] Paraffin: 1 kg;

[0059] Zinc stearate: 0.2 kg;

[0060] Antioxidant BHT: 0.1 kg;

[0061] Nucleating agent: 0.1 kg.

[0062] First, the continuous fiber cloth with a certain warp and weft density is pre-coated with PE resin, and it is used for later use; PP, inorganic powder, EVA, EPDM, aluminate coupling agent, paraffin, zinc stearate, antioxidant BHT, The nucleating agent is added into the high-speed mixing mixer in sequence according to the above ratio and mixed evenly to obtain special pipe material; the special material enters the main extruder and auxiliary extruder respectively, and is mixed with the continuous fiber cloth passing through the die at the die port. Intersect with each other, after vacuum sizing, cooling and forming, the continuous fiber cloth reinfo...

Embodiment 3

[0064] Plastic pipe special material ingredients:

[0065] HDPE resin: 100 kg;

[0066] Inorganic powder: 60 kg;

[0067] EVA: 2 kg;

[0068] POE: 2kg;

[0069] Ethylene-octene copolymer: 1 kg;

[0070] Titanate coupling agent: 2 kg;

[0071] Paraffin: 0.5 kg;

[0072] Polyethylene wax: 0.2 kg;

[0073] Antioxidant 1010: 0.1 kg;

[0074] Nucleating agent: 0.1 kg.

[0075] Firstly, pre-coat PE resin on a continuous fiber cloth with a certain warp and weft density, and reserve it; HDPE, inorganic powder, EVA, POE, ethylene-octene copolymer, titanate coupling agent, paraffin wax, polyethylene wax , Antioxidant 1010, and nucleating agent are sequentially added to the high-speed mixing mixer according to the above ratio and mixed evenly to obtain special pipe materials; The cloth meets each other at the mouth of the die, and after vacuum sizing, cooling and forming, the continuous fiber cloth reinforced plastic pipe is finally obtained.

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Abstract

A material special for plastic pipes comprises 100 parts of a matrix resin, 0-60 parts of inorganic powder, 1-10 parts of a compatilizer, 1-5 parts of a coupling agent, 0.1-1 part of a lubricant, 0.1-1 part of an anti-oxidant and 0.1-1 part of a nucleating agent. A preparation method of a continuous-fiber-cloth-enhanced plastic pipe based on the material special for plastic pipes comprises: leading continuous fiber cloth through a cloth penetration hole and a cloth penetration channel of a neck die of a head die, allowing the continuous fiber cloth to join a resin, so that the continuous fiber cloth can be uniformly covered, and carrying out vacuum sizing and cooling to finally form a plastic pipe with a multi-layer composite structure. The continuous-fiber-cloth-enhanced plastic pipe has advantages of light weight, good rigidity and tensile resistance, impact resistance, creep resistance and stress relaxation damage resistance, and can be widely applied to fields including water supply and drainage, agricultural irrigation, gas transmission, mining engineering, oil field, chemical industry and post and telecommunication.

Description

technical field [0001] The invention relates to pipes, in particular to a special material for plastic pipes and a preparation method for continuous fiber cloth reinforced plastic pipes. Background technique [0002] As a chemical building material, plastic pipe has the characteristics of low energy consumption, corrosion resistance, environmental friendliness and long service life. However, plastic pipes generally have the defects of low rigidity, poor dimensional stability, and prone to creep and stress relaxation damage. A single resin material often cannot meet the requirements of special working conditions such as high load and easy settlement, and often needs to be modified. Strengthen and toughen it. Fiber cloth (cover) is a kind of network structure material, which has the advantages of high modulus, corrosion resistance and excellent dimensional stability. Anisotropy can effectively improve the tensile strength, impact resistance and dimensional stability of fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/08C08L91/06C08L23/16C08K5/098C08K5/134
CPCC08L23/06C08L23/12C08L2203/18C08L2205/025C08L2205/035C08L2205/24C08L2207/062C08L23/0815C08L23/0853C08K5/098C08L23/16C08L91/06C08K5/1345
Inventor 苏长裕杨永喆沈佳俊
Owner SHANGHAI QINGYUAN PIPE TECH
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