Metal composite delivery pipe with polyurethane elastomer lining and manufacturing method and application of metal composite delivery pipe

A polyurethane elastomer and metal composite technology, which is applied in the direction of rigid pipes, pipes, mechanical equipment, etc., can solve the problems of the thickness of the protective layer that is not resistant to impact, the protective layer is not wear-resistant, and the wear of the pipe, so as to achieve low cost and enhanced bonding , the effect of improving the service life

Active Publication Date: 2012-12-12
东莞华工佛塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these protective layers are not wear-resistant, not impact-resistant or because the thickness of the protective layer is not enough, it is easy to cause the pipeline to wear and be scrapped

Method used

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  • Metal composite delivery pipe with polyurethane elastomer lining and manufacturing method and application of metal composite delivery pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of adhesive solution Take 40 parts by weight of Chemlock 213 (Lord Corporation of the United States), add 60 parts by weight of mixed solvent, and stir evenly to obtain an adhesive solution; Percentage 30%, 35% and 35% mixed composition;

[0041] Inner surface treatment of metal pipe Sand blast the inner surface of the metal iron pipe, then degrease and degrease the inner surface with ethyl acetate, then evenly dip-coat the adhesive solution prepared above (dipping thickness is 20 μm), and park at room temperature for 30 minutes. Put it in an oven at 130°C and bake for 30 minutes, then it can be used for pouring;

[0042] The preparation of polyurethane prepolymer is that 15 weight parts of polytetrahydrofuran ether glycols with an average molecular weight of 650, 25 weight parts of polytetrahydrofuran ether glycols with an average molecular weight of 1000, 60 weight parts of polytetrahydrofuran ether glycols with an average molecular weight of 2000 and nano...

Embodiment 2

[0049]Preparation of adhesive solvent Take 20 parts by weight of Thixon406 (Dow Chemical), add 80 parts by weight of mixed solvent, and stir evenly to obtain adhesive solvent; Composition of 30% and 30%;

[0050] Inner surface treatment of metal pipe Sandblast the inner surface of the metal iron pipe, then degrease and degrease the inner surface with trichlorethylene, and then evenly dip-coat the adhesive solvent prepared above (the dipping thickness is 30 μm), and park it at room temperature for 60 minutes. Put it in an oven at 115°C and bake for 45 minutes, then it can be used for pouring;

[0051] Preparation of Polyurethane Prepolymer Put 35 parts by weight of polycaprolactone diol with an average molecular weight of 1000, 65 parts by weight of polycaprolactone diol with an average molecular weight of 2000, and 1.5 parts by weight of montmorillonite into a 300L stainless steel liner reactor , heated to 110°C, evacuated to an absolute pressure of less than 500Pa, dehydrate...

Embodiment 3

[0058] Preparation of adhesive solvent: Take 30 parts by weight of CILBOND48C (British Xibang Chemical Industry Co., Ltd.), add 70 parts by weight of mixed solvent, stir evenly, and obtain adhesive solvent; mixed solvent is composed of tetrahydrofuran, butyl acetate, and methyl pyrrolidone by volume percentage , 30% and 25%;

[0059] Inner surface treatment of metal pipe Sandblast the inner surface of metal iron pipe, degrease and degrease the inner surface with ethyl acetate, then evenly dip-coat the adhesive solvent prepared above (dipping thickness is 25μm), and park at room temperature for 45 minutes. Put it in a 100°C oven and bake for 60 minutes, then it can be used for pouring;

[0060] The preparation of polyurethane prepolymer is that the average molecular weight is 75 parts by weight of polyester diol of 2000, the average molecular weight is 25 parts by weight of polycarbonate diol of 1000, 1.5 parts by weight of nano-montmorillonite and 1.5 parts by weight of nano-s...

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Abstract

The invention discloses a metal composite delivery pipe with a polyurethane elastomer lining and a manufacturing method and application of the metal composite delivery pipe. Low-polymer polyhydric alcohol and isocyanate are used as raw materials, and the quantities of the raw materials and the reaction temperature are controlled, so that a prepared polyurethane elastomer is good in toughness and high in strength, and adhesion strength of the prepared polyurethane elastomer and metal is high; resin type adhesive is adopted, the polyurethane lining is tightly combined with the inner surface of a metal pipe by a centrifugal casting process and control of the rotational speed and the casting speed for centrifugal casting, and the adhesion strength is high; and adhesion between the polyurethane lining and the inner surface of the metal pipe is further strengthened by improving a crosslinking effect of the polyurethane lining via after-vulcanization. The manufacturing method of the metal composite delivery pipe with the polyurethane elastomer liner is simple, is low in cost and can be applied to industrial production. The manufactured metal composite delivery pipe with the polyurethane elastomer lining cannot be corroded or abraded by delivered media, and the service life of the delivery pipe is prolonged.

Description

technical field [0001] The invention belongs to the technical field of conveying materials, and in particular relates to a metal-lined composite conveying pipe made of polyurethane elastomer and its preparation method and application. Background technique [0002] Wear-resistant and anti-corrosion pipelines are widely used in electric power, chemical industry, metallurgy and construction industries. In the application of engineering components, the main forms of material damage are wear, corrosion and fracture. Among them, wear and corrosion account for more than 80% of the total number of material failures. [0003] At present, the pipes used in the wear-resistant and anti-corrosion fields at home and abroad are metal pipes, polymer pipes, inorganic material pipes and composite pipes composed of two materials. Composite pipes such as ceramic composite steel pipes, resin sprayed or coated steel pipes and rubber lined composite pipes. There is also nickel phosphating treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/10B29C39/44F16L9/147C08G18/10C08K3/34C08K3/36C08K3/26B29K75/00
Inventor 邹明清易玉华
Owner 东莞华工佛塑新材料有限公司
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