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Ultra-polymer two-way stencil straight-out composite pipe and its manufacturing method

A technology of ultra-high polymer and composite pipes, which is applied in the direction of non-polymer adhesive additives, pipes/pipe joints/fittings, hoses, etc., which can solve problems such as difficult welding, non-welding bonding, and non-adhesiveness. Achieve superior performance, increase hardness and impact strength, and enhance surface polarity

Inactive Publication Date: 2018-08-03
天津市明志实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. The polarity of the surface of the ultra-high material is almost zero, and it is non-adhesive, so it is difficult to weld and bond
No matter how good a material is, if it cannot be welded and bonded, it will be difficult to enter the downstream market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The hot melt adhesive provided by the present invention comprises the following components in parts by weight: 40 parts of diphenylmethane diisocyanate, 3 parts of dimethylaminoethyl methacrylate, 0.5 part of dibutyltin dilaurate, triene isocyanurate 5 parts of propyl ester, 3 parts of triethanolamine, 2 parts of triphenyl phosphate, 1 part of 8-hydroxyquinoline, 10 parts of tert-butylhydroquinone and 10 parts of ethylene-vinyl acetate copolymer.

[0029] The preparation method of the above hot melt adhesive is to heat diphenylmethane diisocyanate and dimethylaminoethyl methacrylate to 70-80°C in a reaction kettle, stir and mix, add dibutyltin dilaurate, triphenyl phosphate, 8 - Hydroxyquinoline, stirred for 40-60 minutes, then heated to 100-110°C under the condition of vacuum degree of 0.02-0.05Mpa, added tert-butyl hydroquinone and ethylene-vinyl acetate copolymer, kept for 40-50 minutes , and finally add triallyl isocyanurate and triethanolamine, and stir for 20-30 m...

Embodiment 2

[0031] The manufacturing method of the straight-out composite pipe in the ultra-high polymer bidirectional steel mesh provided by the present invention has the following steps:

[0032] Step 1, extruding ultra-high molecular weight polyethylene into a tube through an extruder to obtain an inner straight outlet tube;

[0033] Step 2, the inner straight outlet pipe is drawn into the winding machine, and the outer surface of the inner straight outlet pipe is wound with steel wire mesh under the heating condition of 110°C;

[0034] Step 3, step 2 After winding the steel mesh, cover the surface of the steel mesh with the hot melt adhesive prepared in Example 1 after heating and softening;

[0035] Step 4: Dissolve diacetone acrylamide in water, then add ultra-high molecular weight polyethylene, stir and mix, then raise the temperature to 60°C, keep it for 30 minutes, then add dimethylaminoethyl acrylate and N-phenylaniline. The temperature was raised to 150°C under a vacuum condit...

Embodiment 3

[0038] A method for manufacturing a composite pipe straight out of an ultra-high polymer two-way steel mesh, the steps are as follows:

[0039] Step 1, extruding ultra-high molecular weight polyethylene into a tube through an extruder to obtain an inner straight outlet tube;

[0040] Step 2, the inner straight outlet pipe is drawn into the winding machine, and the outer surface of the inner straight outlet pipe is wound with steel wire mesh under the heating condition of 110°C;

[0041] Step 3, step 2 After winding the steel mesh, cover the surface of the steel mesh with the hot melt adhesive prepared in Example 1 after heating and softening;

[0042] Step 4: Dissolve diacetone acrylamide in water, then add ultra-high molecular weight polyethylene, stir and mix, heat up to 65°C, keep it for 36 minutes, then add dimethylaminoethyl acrylate and N-phenylaniline, in vacuum Under the vacuum condition of 0.04MPa, the temperature was raised to 160°C and kept for 6 minutes to obtain a ...

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PUM

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Abstract

The invention discloses an ultra-high molecular two-way steel net inner straight-out pipe and a manufacturing method. The ultra-high molecular two-way steel net inner straight-out pipe comprises an inner straight-out pipe, the outer surface of the inner straight-out pipe is covered with a steel wire net, a hot melt adhesive is arranged outside the steel wire net in a composite mode, and an ultra-high molecular weight polyethylene composite material is arranged on the outer surface of the hot melt adhesive in a composite mode, wherein the inner straight-out pipe is formed when ultra-high molecular weight polyethylene is extruded by an extruder. The manufacturing method comprises the steps that the outer surface of the inner straight-out pipe is wound by the steel wire net, the surface of the steel wire net is covered with the softened hot melt adhesive, diacetone acrylamide, ultra-high molecular weight polyethylene, N,N-dimethylaminoethyl acrylate and N-phenylaniline are extruded by the two-screw extruder to obtain the ultra-high molecular weight polyethylene composite material, the ultra-high molecular weight polyethylene composite material is made to adhere to the surface of the softened hot melt adhesive, sizing is carried out, and the ultra-high molecular two-way steel net inner straight-out pipe is obtained. The ultra-high molecular two-way steel net inner straight-out pipe has excellent properties, and the application range is further expanded.

Description

technical field [0001] The invention belongs to the technical field of chemical material preparation, and in particular relates to a composite pipe straight out of an ultrahigh polymer bidirectional steel mesh and a manufacturing method thereof. Background technique [0002] Although ultra-high molecular weight polyethylene has excellent performance, so far, the domestic production volume including pipes is only tens of thousands of tons. So, what factors limit the promotion and application of ultra-high products: 1. The melt index is zero. There is no fluidity and plasticizing molding requires high pressure, high temperature and long time, which makes the processing of ultra-high products very difficult and the efficiency is very low. The output of a pipeline production line is only a few hundred kilograms a day. Coupled with high raw material prices, product costs remain high. 2. The tensile strength is only about 20% higher than that of PE, PP and PVC, and the hardness...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/147F16L11/08C09J175/04C09J11/06C09J11/04B29D23/00B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29D23/00C08K5/00C08K5/17C08K5/34924C08K5/521C09J11/06C09J175/04F16L9/147F16L11/081
Inventor 吴定财
Owner 天津市明志实业发展有限公司
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