Manufacturing method for epoxy resin filling type pre-stress steel strand

A technology of prestressed steel strand and epoxy resin, applied in epoxy resin coating, auxiliary device for rope making, coating, etc., can solve the problem of poor corrosion resistance of prestressed steel strand, increase corrosion resistance, The effect of good corrosion resistance

Active Publication Date: 2018-05-08
贵州水钢金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is to provide a preparation method of epoxy resin filled prestressed steel strand for the defect of poor corrosion resistance of prestressed steel strand

Method used

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  • Manufacturing method for epoxy resin filling type pre-stress steel strand

Examples

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Effect test

example 1

[0027]In parts by weight, add 70 parts of deionized water and 8 parts of sodium lauryl sulfate into a three-necked flask with a stirrer and a dropping funnel, start the stirrer, stir for 45min at a speed of 300r / min, and obtain the prepared Emulsion, after adding 40 parts of aniline to the pre-emulsion, add 20 parts of ammonium persulfate solution with a mass fraction of 5% to the three-necked flask dropwise with a dropping funnel at a rate of 3 mL / min. React for 6 hours and discharge to obtain a polyaniline emulsion; add 50mL acetone to 200mL polyaniline emulsion, break the emulsion for 2 hours to obtain a polyaniline suspoemulsion, place the polyaniline suspoemulsion in a high-speed centrifuge at a speed of 4000r / min After centrifugation for 10 minutes, filter with suction, remove the filtrate to obtain a filter cake, wash the filter cake with deionized water 3 times, place the product after suction filtration and washing in a vacuum drying oven with a set temperature of 40°C...

example 2

[0029] In parts by weight, add 75 parts of deionized water and 9 parts of sodium lauryl sulfate into a three-necked flask with a stirrer and a dropping funnel, start the stirrer, and stir for 47min at a speed of 310r / min to obtain the prepared mixture. Emulsion, after adding 45 parts of aniline to the pre-emulsion, add 22 parts of ammonium persulfate solution with a mass fraction of 5% to the three-necked flask dropwise with a dropping funnel at a dropping rate of 4mL / min. React for 6.5 hours and discharge to obtain polyaniline emulsion; add 55mL acetone to 210mL polyaniline emulsion, break the emulsion for 2.5h to obtain polyaniline suspoemulsion, place polyaniline suspoemulsion in a high-speed centrifuge, and spin at 4200r / min After centrifugation at a speed of 11 minutes, filter with suction, remove the filtrate to obtain a filter cake, wash the filter cake with deionized water 4 times, and place the product after suction filtration and washing in a vacuum drying oven with a...

example 3

[0031] In parts by weight, add 80 parts of deionized water and 10 parts of sodium lauryl sulfate into a three-necked flask with a stirrer and a dropping funnel, start the stirrer, and stir for 50 min at a speed of 330 r / min to obtain the prepared Emulsion, after adding 50 parts of aniline to the pre-emulsion, add 25 parts of ammonium persulfate solution with a mass fraction of 5% to the three-necked flask dropwise with a dropping funnel at a rate of 5 mL / min. React for 7 hours and discharge to obtain polyaniline emulsion; add 60mL acetone to 220mL polyaniline emulsion, and break the emulsion for 3 hours to obtain polyaniline suspoemulsion. After centrifugation for 12 minutes, filter with suction, remove the filtrate to obtain a filter cake, wash the filter cake with deionized water 5 times, place the product after suction filtration and washing in a vacuum drying oven with a set temperature of 45°C, and dry it for 14 hours. Grind and pass through a 100-mesh sieve to obtain lat...

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Abstract

The invention discloses a manufacturing method for an epoxy resin filling type pre-stress steel strand, and belongs to the technical field of steel strand manufacturing. The method comprises: using aniline as a raw material, emulsifying the aniline at normal temperature, to initiate polymerization to obtain a polyaniline emulsion, spraying an epoxy spraying coating to a bright steel wire through electrostatic spraying, to obtain an epoxy steel strand wire, immediately spraying imvite powders on the epoxy steel strand wire, twisting and stretching repeatedly to form a frosted epoxy steel strandwire, and demagnetizing, solidifying and drying, and cooling to obtain the epoxy resin filling type pre-stress steel strand. An epoxy resin coating has certain anti-corrosion effect. Once an outer layer has defects, corrosion would occur. Because of an inductive coupling effect of the polyaniline, the steel strand has good anti-corrosion property. The epoxy spraying coating is sprayed to the surface of the steel strand through electrostatic spraying, and electrons on the surface of the steel strand wire are obtained. A layer of oxidized metal film is added to the surface of the pre-stress steel strand, so as to improve corrosion resistance of the pre-stress steel strand. The method is wide in application prospect.

Description

technical field [0001] The invention discloses a method for preparing an epoxy resin filled prestressed steel strand, belonging to the technical field of steel strand preparation. Background technique [0002] Steel strand is a steel product composed of multiple steel wires, which can be divided into prestressed steel strand, unbonded steel strand, galvanized steel strand, etc. The carbon steel surface can be added with galvanized layer, zinc-aluminum alloy layer, aluminum-clad layer, copper-plated layer, epoxy resin coating, etc. as required. [0003] The most commonly used steel strands are galvanized steel strands and prestressed steel strands. The diameter of commonly used prestressed steel strands is in the range of 9.5mm to 17.8mm, and there are a small number of steel strands with larger diameters. There are generally 7 steel wires in each prestressed steel strand, and there are also 2, 3 and 19 steel wires. The steel wires can have metal or non-metallic anti-corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D07B1/16D07B7/14C09D163/00C09D7/65C09D5/08
CPCC08K2003/2227C09D5/08C09D163/00D07B1/16D07B7/145D07B2201/2082D07B2201/2087D07B2205/206D07B2801/18D07B2801/16C08L79/02C08K3/22
Inventor 高俊何少雄陈可
Owner 贵州水钢金属科技有限公司
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