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Adhesive for PVC (Polyvinyl Chloride) pipes and preparation method thereof

An adhesive and effective technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of energy consumption, complicated welding process, long curing time, etc.

Inactive Publication Date: 2015-02-11
ANHUI YUANFENG PIPELINE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding process is complicated, and at the same time, it needs to be heated by a power source, which consumes energy; and the use of existing adhesives to connect adjacent PVC pipes not only requires a long curing time, but also the bonded pipes are difficult to meet in terms of water pressure. High pressure piping requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The present invention also provides a preparation method of an adhesive for PVC pipes, the preparation method comprising:

[0019] a, soaking perchlorethylene resin and polyvinyl chloride resin in a mixed solution comprising butyl acetate, cyclohexanone and ethylene dichloride to prepare a basic mixed solution;

[0020] b. Mix and soak the alkyd resin, dibutyl phthalate and the basic mixed liquid to prepare the modified mixed liquid;

[0021] c. Add light calcium carbonate to the modified mixture to form an adhesive for PVC pipes.

[0022] In the preparation method of the PVC pipe adhesive provided by the present invention, the amount of each raw material can be selected in a wide range, but in order to make the PVC pipe adhesive have more excellent viscosity, bonding strength and hydraulic burst strength . Preferably, relative to 100 parts by weight of perchlorethylene resin, the amount of polyvinyl chloride resin is 30-80 parts by weight, the amount of butyl acetate...

Embodiment 1

[0031] a. At 25°C, soak 100 parts by weight of perchlorethylene resin and 50 parts by weight of polyvinyl chloride resin in a mixed solution containing 300 parts by weight of butyl acetate, 500 parts by weight of cyclohexanone and 200 parts by weight of ethylene dichloride 2.5h to prepare the basic mixed solution; wherein, the weight average molecular weight of the perchlorethylene resin is 3000-5000, and the weight average molecular weight of the polyvinyl chloride resin is 7500.

[0032] b. At 25°C, mix 50 parts by weight of alkyd resin and 20 parts by weight of dibutyl phthalate with the above basic mixed solution and soak for 2.5 hours to obtain a modified mixed solution; the weight average of alkyd resin The molecular weight is 8000, and the particle size of light calcium carbonate is 0.02mm.

[0033] c. Add 1500 parts by weight of light calcium carbonate to the above-mentioned modified mixed solution to form PVC pipe adhesive A1.

[0034] The parameters of the viscosity...

Embodiment 2

[0036] a. At 20°C, soak 100 parts by weight of perchlorethylene resin and 30 parts by weight of polyvinyl chloride resin in a mixed solution containing 250 parts by weight of butyl acetate, 300 parts by weight of cyclohexanone and 150 parts by weight of ethylene dichloride 2h to prepare the basic mixed liquid; wherein, the weight average molecular weight of the perchlorethylene resin is 3000, and the weight average molecular weight of the polyvinyl chloride resin is 7000.

[0037] b. At 20°C, mix 30 parts by weight of alkyd resin and 10 parts by weight of dibutyl phthalate with the above basic mixed solution and soak for 2 hours to obtain a modified mixed solution; the weight average molecular weight of alkyd resin 4000, the particle size of light calcium carbonate is 0.01mm.

[0038] c. Add 1400 parts by weight of light calcium carbonate to the above-mentioned modified mixed solution to form PVC pipe adhesive A2.

[0039] The parameters of the viscosity, bond strength and hy...

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Abstract

The invention discloses an adhesive for PVC (Polyvinyl Chloride) pipes and a preparation method thereof. The adhesive for the PVC pipes contains perchloro-ethylene resin, PVC resin, butyl acetate, cyclohexanone, dichloroethane, alkyd resin, dibutyl phthalate and light calcium carbonate. The adhesive for the PVC pipes, prepared by the method, has excellent viscosity, bond strength and hydrostatic burst strength; the preparation method has the advantages that the steps are simple, and the raw materials are easily obtained.

Description

technical field [0001] The invention relates to an adhesive, in particular to an adhesive for PVC pipes and a preparation method thereof. Background technique [0002] At present, PVC pipes are widely used in industrial production and life. The laying of PVC pipes is either to connect the PVC pipes by welding, or to connect two adjacent PVC pipes by adhesive. The welding process is complicated, and at the same time, it needs to be heated by a power source, which consumes energy; and the use of existing adhesives to connect adjacent PVC pipes not only requires a long curing time, but also the bonded pipes are difficult to meet in terms of water pressure. High pressure piping requirements. Contents of the invention [0003] The object of the present invention is to provide a kind of adhesive for PVC pipe and preparation method thereof, the adhesive for PVC pipe prepared by the method has excellent viscosity, cohesive strength and hydraulic bursting strength, and the prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J127/24C09J127/06C09J167/08C09J11/06C09J11/04
Inventor 伍克军
Owner ANHUI YUANFENG PIPELINE TECH CO LTD