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Self-lubricating solvent-free epoxy pipeline coating and preparation method thereof

A solvent-free, self-lubricating technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of easy flying of chopped glass fibers, increase in coating viscosity, and decrease in strength, and improve mechanical and chemical properties. , good reinforcement effect, improve the effect of uniformity

Active Publication Date: 2020-05-12
JIANGSU ZHAOHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The actual situation is: 1. The viscosity of E-51 epoxy resin is not low enough, and a large amount of reactive diluent needs to be added. Too much reactive diluent will reduce the strength of the epoxy coating; If it is added before construction, the uniformity of stirring cannot be guaranteed, so that the quality of the epoxy coating is not uniform; 3. The chopped glass fiber is easy to fly when it is added, which is extremely harmful to the health of the operator; 4. The amount of added fiber is limited. , generally not more than 10%, slightly increasing the dosage, the viscosity of the coating will rise sharply, which will increase the resistance during the extrusion coating process, which is not conducive to construction

Method used

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  • Self-lubricating solvent-free epoxy pipeline coating and preparation method thereof
  • Self-lubricating solvent-free epoxy pipeline coating and preparation method thereof
  • Self-lubricating solvent-free epoxy pipeline coating and preparation method thereof

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preparation example Construction

[0051] (2) Preparation of coating:

[0052] Mix the paint and curing agent according to the ratio, send the prepared paint into the steel pipe with a gear pump, calculate the amount used in advance, then add 10% margin, and gently push the rubber ball in by hand;

[0053] Connect the flanges at the two nozzles, the inlet flange is connected to the compressed air source, and the outlet flange is connected to a microporous damper;

[0054] Open the compressed air, and observe the pressure gauge reading, when the rubber ball starts to move, write down the pressure reading, the pressure of extrusion paint on the conventional market needs to reach 8 kg, and the paint of the present invention can push the rubber ball when it is 6 kg ;

[0055] Use an ultrasonic thickness gauge to measure the dried coating, and one side can reach 1000μm;

[0056] Observed with an endoscope, the coating film has no sagging phenomenon under the condition of 1000μm film thickness, and has excellent th...

Embodiment 1

[0072] Take 40.6 parts of bisphenol F epoxy resin and 3 parts of monoepoxy reactive diluent, put them in the reactor and stir evenly, slowly add 3.5 parts of titanium dioxide, 0.3 parts of phthalocyanine blue, 7 parts of aluminum tripolyphosphate, zinc phosphate 12 parts, high speed mixing;

[0073] After mixing evenly, enter the pin-type sand mill to grind until the fineness is less than 20 μm;

[0074] Slowly add 0.6 parts of graphene powder, 13 parts of chopped polyester fibers, and 12 parts of glass flakes to the paint prepared above, and mix at a slow speed;

[0075] Put the paint material prepared above and 8 parts of cardanol epoxy curing agent in the reaction kettle and stir evenly to obtain the coating.

Embodiment 2

[0077] Take 33.5 parts of bisphenol F epoxy resin and 5 parts of monoepoxy reactive diluent, put them in the reactor and stir evenly, slowly add 5 parts of titanium dioxide, 1 part of phthalocyanine blue, 10 parts of aluminum tripolyphosphate, zinc phosphate 15 parts, high speed mixing;

[0078] After mixing evenly, enter the pin-type sand mill to grind until the fineness is less than 20 μm;

[0079] Slowly add 0.5 parts of graphene powder, 15 parts of chopped polyester fibers, and 5 parts of glass flakes to the paint prepared above, and mix at a slow speed;

[0080] Put the paint material prepared above and 10 parts of cardanol epoxy curing agent in the reaction kettle and stir evenly to obtain the coating.

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Abstract

The invention relates to a self-lubricating solvent-free epoxy pipeline coating material and a preparation method thereof. The coating material consists of 28-45 parts of bisphenol F epoxy resin, 0.3-0.8 part of graphene powder, 5-15 parts of chopped polyester fiber, 5-15 parts of glass flake, 3-5 parts of single epoxy reactive diluent, 5-10 parts of aluminum tripolyphosphate, 5-15 parts of zinc phosphate, 3-6 parts of pigment, and 8-10 parts of curing agent. The self-lubricating solvent-free epoxy coating material has the advantages that the resistance in the extrusion process of the coatingmaterial can be reduced, the corrosion resistance of the coating can be improved, the bending resistance and the adhesion strength of the epoxy coating can be increased, the coating system can generate good thixotropy, and the solvent-free epoxy coating realizes one-time thick applying.

Description

Technical field: [0001] The invention relates to the technical field of coating preparation, in particular to a self-lubricating solvent-free epoxy pipeline coating and a preparation method thereof, and also relates to a self-lubricating solvent-free epoxy pipeline simulation construction device and a simulation construction method thereof. Background technique: [0002] At present, domestic extrusion coatings mainly include: 1. only use active diluents to reduce epoxy viscosity and reduce extrusion resistance, such as a solvent-free epoxy pipeline coating disclosed by CN106497323A; 2. stir and add chopped glass fibers on site, Increase coating strength, as the patent No. CN104530921B discloses a kind of preparation method of epoxy heavy-duty anticorrosion coating with toughness. [0003] The main raw materials above are E-51 epoxy resin, monoepoxy reactive diluent, pigment, filler, modified amine curing agent, and chopped glass fiber. [0004] The actual situation is: 1. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/62C09D7/65D06M11/48D06M15/564B05D7/22B05D7/24B05D5/00D06M101/32
CPCB05D5/00B05D7/222B05D7/24B05D2504/00B05D2601/20B05D2602/00C08K2003/2241C08K2003/321C08K2003/327C08L2203/18C09D5/08C09D7/61C09D7/62C09D7/65C09D7/70C09D163/00D06M11/48D06M15/564D06M2101/32C08L67/02C08K13/06C08K9/00C08K9/04C08K3/042C08K7/00C08K3/32C08K3/22
Inventor 王宏辉苏张宝
Owner JIANGSU ZHAOHUI CHEM