CN102676048A - Modified polyphenylene sulfide coating and application thereof - Google Patents
Modified polyphenylene sulfide coating and application thereof Download PDFInfo
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- CN102676048A CN102676048A CN201210186275XA CN201210186275A CN102676048A CN 102676048 A CN102676048 A CN 102676048A CN 201210186275X A CN201210186275X A CN 201210186275XA CN 201210186275 A CN201210186275 A CN 201210186275A CN 102676048 A CN102676048 A CN 102676048A
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Abstract
The invention discloses a modified polyphenylene sulfide coating and the application thereof. The modified polyphenylene sulfide coating consists of the following components by weight percentage: 60-90 percent of polyphenylene sulfide resin, 3-25 percent of poly-perfluorinated ethylene propylene resin, 3-20 percent of ethylene-tetrafluoroethylene copolymer resin, 1-5 percent of molybdenum disulfide, 1-5 percent of graphite and the balance of filler, wherein the filler is any one of or a mixture of zinc oxide, aluminum oxide, silicon carbide and chromium sesquioxide. The modified polyphenylene sulfide coating disclosed by the invention has the advantages that the compatibility among the components is good; a prepared coating layer has higher corrosion resistance, higher self-lubricity and strong wear-resistant ability, is resistant to high temperature, is highly insulated, has good toughness, can bear impact force capable of being borne by a metal surface, has excellent bond performance with a metal material and is particularly suitable for the using and working condition of cold/hot sudden changes which cannot be borne by glass lining equipment; and through spraying the coating disclosed by the invention on the surface of the metal matrix material, a manufactured work piece has excellent physical-chemical performance, a long service life and a wide application range.
Description
Technical field
The present invention relates to polyphenylene sulfide modified paint and application thereof, particularly resistance to wear, corrosion-resistant polyphenylene sulfide modified paint and application thereof.
Background technology
In the industrial installation; The kinetic friction mechanism of equipment, carry gritty crude oil pipeline, carry the friction means that receives that the chemical pipeline contain granule materials, the flue that discharging contains dust etc. use in corrosive environment; Particularly be in the gritty crude oil pipeline of conveying under severe cold and the hot environment for a long time and discharge the flue that contains dust; In use can receive abrasion and the dual harm of corrosive, cause said parts short work-ing life, it is high to change frequency; Increase running cost, brought bigger difficulty also for the continuity and the security of suitability for industrialized production.
Above-mentioned parts are worn and corrosive harm in order to reduce, people use have resistance to wear, the material of corrosion resistance nature casts above-mentioned parts.Said have resistance to wear, the material of corrosion resistance nature comprises metallic substance, inorganic materials, macromolecular material; And existing these three kinds of materials exist following problem respectively: (1), resistance to wear, corrosion resistant metallic substance; All be expensive alloy material, like titanium-nickel-Chromium Stainless Steel, its price is not only several times even tens times of common iron; And its work-ing life is very limited, and the maintain and replace cost is also very high; (2), resistance to wear, corrosion resistant inorganic materials, like glass (iron-based lass lining), cast stone, corundum etc.,, be difficult to processing because of enbrittling, and raw materials cost is also higher; (3), resistance to wear, corrosion resistant macromolecular material, because of shortcoming such as poor heat resistance, intensity be low, its use range has received bigger restriction.
In order to overcome the problems referred to above that prior art exists, at present, also have with comprise the resistance to wearing of a kind of base resin, corrosion resistant coating is sprayed on the metal matrix material surface and forms coating, obtain having resistance to wear, the matrix material of corrosion resistance nature.Though this matrix material has overcome shortcomings such as alloy material cost height, the difficult processing of inorganic materials, macromolecular material intensity be low to a certain extent; But the contriver finds that in actual mechanical process still there are these problems in this material: bonding force is poor between (1), metal matrix material and its coating surfaces; Make coating be prone to peel off, let metal-coating composite material lose corrosion-resistant, wear-resistant performance from body material; (2), the coating frictional coefficient is high, wear resistance is low; (3), erosion resistance is low, work-ing life is short.
Summary of the invention
The objective of the invention is to overcome metal-coating composite material that metal matrix material surface sprayed coating forms in the prior art; The coating that exists be prone to from basic material peel off, wear resistance and the low shortcoming of erosion resistance, provide good, resistance to wear and the polyphenylene sulfide modified paint of corrosion resistance and good with the metal matrix material bonding force.
Second purpose of the present invention is to provide the application of polyphenylene sulfide modified paint.
The 3rd purpose of the present invention be to provide with the preparation of polyphenylene sulfide modified paint resistance to wear, the method for corrosion resistance nature matrix material.
In order to realize first purpose of the present invention, the invention provides following technical scheme:
The polyphenylene sulfide modified paint, percentage composition meter by weight, composed of the following components:
Polyphenylene sulfide 60～90%,
Exhaustive fluorinated ethylene propylene 3～25%,
Ethylene-tetrafluoroethylene copolymer resins 3～20%,
Molybdenumdisulphide 1～5%,
Graphite 1～5%,
The filler surplus,
Said filler is any one or a few the mixture in zinc oxide, aluminum oxide, silit and the chromium sesquioxide.
In the above-mentioned coating, said polyphenylene sulfide can be linear polyphenylthioether, also can be the branched chain type polyphenylene sulfide.Preferred branched chain type polyphenylene sulfide; Particularly the limiting viscosity when the branched chain type polyphenylene sulfide is that (with α-chloronaphthalene is solvent to 5～20mL/g; Soltion viscosity at 208 ℃) time, superior physicalies such as better corrosion-resistant, wear-resistant, high temperature resistant, high insulation and cementability that above-mentioned polyphenylene sulfide modified paint has.
The weight percentage of above-mentioned polyphenylene sulfide preferred 60～80%.
The weight percentage of above-mentioned exhaustive fluorinated ethylene propylene preferred 5～20%.
The weight percentage of above-mentioned ethylene-tetrafluoroethylene copolymer resins preferred 5～20%.
In the above-mentioned coating, any several kinds of mixtures in the preferred zinc oxide of said filler, aluminum oxide, silit and the chromium sesquioxide.Zinc oxide in the said filler can be common zinc oxide, also can be ZnOw.Because the molecular structure that ZnOw has the pawl type; Not only can play filling effect, and can embed in the base resin molecule, intermolecular more being prone to combined; Make between each component of coating consistency better; Thereby make above-mentioned polyphenylene sulfide modified paint have better rigidity and wear resistance, therefore, the preferred ZnOw of above-mentioned zinc oxide.
Preferably, the length-to-diameter ratio of above-mentioned ZnOw is preferably 5: 1～and 30: 1, be preferably 10: 1～30: 1.
In order further to make above-mentioned coating have higher rigidity and wear resistance, the preferred Alpha-alumina of above-mentioned aluminum oxide; Said Alpha-alumina has better hardness because of it, is filled in the coating, has improved the rigidity and the wear resistance of coating.
In order further to make above-mentioned polyphenylene sulfide modified paint have better rigidity and wear resistance again, the particle diameter of above-mentioned silit and chromium sesquioxide is preferably and is less than or equal to 0.01mm.
In order to realize second purpose of the present invention, the invention provides following technical scheme: the application of polyphenylene sulfide modified paint, with above-mentioned polyphenylene sulfide modified paint be used on the metal matrix material make resistance to wear, the corrosion resistance nature matrix material.
In order to realize the 3rd purpose of the present invention; The invention provides following technical scheme: with the preparation of above-mentioned polyphenylene sulfide modified paint resistance to wear, the method for corrosion resistance nature matrix material; Comprise above-mentioned polyphenylene sulfide modified paint is sprayed on the metal matrix material heating, melting and solidification film forming.
The present invention adopts polyphenylene sulfide, exhaustive fluorinated ethylene propylene and the composite use of ethylene-tetrafluoroethylene copolymer resins; Common base resin as coating of the present invention, wherein, polyphenylene sulfide; Claim polyphenylene sulfoether resin again; Be the polymkeric substance that molecular chain contains the phenylene sulfide repeated structural unit, be divided into linear polyphenylthioether and branched chain type polyphenylene sulfide, have preferably resistance to wear, advantage such as erosion resistance, thermotolerance, weathering resistance, high-insulativity; The ethylene-tetrafluoroethylene copolymer resins; Claim fluororesin 40 again, form with 1: 1 (mo l), replace the multipolymer of chain link by ethene and tetrafluoroethylene by ethene and tetrafluoroethylene; Have over-all propertieies such as good shock-resistant, creep resistance, high compression-strength, life-time service temperature-60～+ 180 ℃; Exhaustive fluorinated ethylene propylene is the multipolymer of tetrafluoroethylene and perfluoro propylene, has and similar physical strength, chemicalstability, electrical insulating property, stability to aging and the non-stickiness of tetrafluoroethylene of being known as " kings of plastics ", can be at-85～205 ℃ of life-time service.Have fabulous consistency between the coating composition of the present invention, make the coating for preparing with coating of the present invention have both excellent physical chemistry, the mechanics of machinery characteristic of said three kinds of base resins; In the proportional range of three kinds of base resins according to the invention, paint spay-coating of the present invention forms coating on metal matrix material, under the molten state; Molecular chain twines each other; The chain rupture of part superpolymer, grafting or block again, thus form the uniform polyphenylene sulfide perfluoroethylene-propylene of molecule interface exposure phase ethylene-tetrafluoroethylene copolymer high polymer alloy; Make with the more said three kinds of base resin performances of coating of coating preparation of the present invention more excellent; It is better with corrosion resistance nature particularly to resistance to wear, and the bonding force of coating and metal matrix material is better, and coating is difficult for peeling off from body material; Adopt molybdenumdisulphide and graphite to make auxiliary lubricant, filled up the textural defect of said three kinds of base resins, strengthened the self lubricity of coating of the present invention, make wear-resistant ability strong; Adopt above-mentioned filler to make propping agent, strengthened the rigidity and the wear resistance of coating of the present invention.
Compared with prior art, beneficial effect of the present invention: polyphenylene sulfide modified paint of the present invention, consistency is good between the component, the coating of preparation have following corrosion-resistant with the physical and chemical performance advantage such as resistance to wear:
(1), higher erosion resistance is arranged; The coating salt tolerant acid (36%w of preparation; " %w " according to the invention expression quality percentage composition, down with), nitric acid (40%w), sulfuric acid (70%w), phosphoric acid (60%w), caustic soda (40%w), ammoniacal liquor; Calcium chloride, the corrosion of acetate, acetone, chloroform, ethanol petrol acid such as (volume ratios 20: 80), alkali, salt, organic solvent;
(2), have self lubricity, frictional coefficient is low, antiwear property is strong;
(3), good toughness, can bear the surging force that the metallic surface can be born;
(4), have good cohesive force, sticking power is high, is specially adapted to the applying working condition of the cold and hot cataclysm that glass-lined equipment can not bear with metal matrix material such as iron and steel, aluminium, stainless steel;
(5), the surface highly polished, scale inhibition performance is good, in the use, particularly under the hard water environment the use less scaling;
(6), high insulation, high temperature resistant, have higher thermostability and better weather, can be in the medium-term and long-term use of liquid (20～160 ℃) and air (40～260 ℃).
Because of coating of the present invention has as above advantage, through paint spay-coating of the present invention is surperficial in metal matrix material, the workpiece physical and chemical performance that produces is excellent, long service life, applied range.
Embodiment
Below in conjunction with Test Example and embodiment the present invention is made further detailed description.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.
Embodiment 1～7
The polyphenylene sulfide modified paint of embodiment 1～7, the percentage composition meter is mixed by component shown in embodiment in the table 1 1～7 respectively by weight.
Comparative example 1～3
The polyphenylene sulfide modified paint of comparative example 1～3, the percentage composition meter is mixed by component shown in comparative example in the table 1 1～3 respectively and forms by weight.
Table 1
In the table 1:
The branched chain type polyphenylene sulfide is the coating level, particle diameter≤45um, and limiting viscosity is 5～20mL/g;
The linear polyphenylthioether resin is the coating level, particle diameter≤45um.
Exhaustive fluorinated ethylene propylene, particle diameter≤15um is the F46 exhaustive fluorinated ethylene propylene of being produced by Quzhou sky over the river fluorine chemistry ltd;
The ethylene-tetrafluoroethylene copolymer resins, particle diameter≤15um is the F40 exhaustive fluorinated ethylene propylene by Yancheng brightness Fluroplast-4 ltd production forever.
The preparation of embodiment 8～12 usefulness polyphenylene sulfide modified paints is resistance to worn, the corrosion resistance nature matrix material
Prepare respectively with embodiment 1～5 said coating resistance to wear, the test piece of corrosion resistance nature matrix material; Body material that adopts and coating are shown in following table table 2, and body material is of a size of 30 * 20 * 1mm, removes substrate material surface foreign matter, greasy dirt; With paint spay-coating to the surface; Send in the process furnace, temperature is 300～380 ℃ in the stove, toasts 10～30 minutes; Plasticizing, levelling after the fusion, forming thickness is the coating of 0.01～0.08mm, is cooled to room temperature, places 23 ℃ of Homothermal Proof Box works to detect test after the status adjustment in 72 hours again.
1～3 said polyphenylene sulfide modified paint preparation of comparative example 4～6 usefulness comparative examples is resistance to worn, the test piece of corrosion resistance nature matrix material, and the preparation method is with embodiment 8～12, and the body material of employing and coating are shown in following table table 2.
Test piece to embodiment 8～12, comparative example 4～6 detects test, and test item is following:
Appearance of coat: visual method;
Rub(bing)test: test piece is put on the reciprocating type frictional testing machines, and the friction pair material is identical with the test piece base material; Applying load 0.5MPa, speed 1m/s (PM comes and goes 120 times), stroke 250mm, combined stroke 1000m, medium are tap water, observe surface of friction, survey the friction pair wear loss;
Salt-fog test: specimen size 30 * 20 * 1mm, coat-thickness 0.08mm makes an experiment by GB/T10125-1997;
The HCl test: technical hydrochloric acid (36%w), soaking at room temperature 7 days is observed corrosion phenomenon;
The caustic soda test: liquid caustic soda (Na OH content is 40%w), room temperature bubble 7 days is observed corrosion phenomenon;
Acetic acid test: industrial acetic (98%w), room temperature 7 days is observed corrosion phenomenon;
The ethanol petrol weathering test: ethanol (20 parts by volume), gasoline (80 parts by volume), fully mixing is put into test piece, and is airtight, soaks 90 days under the room temperature, observes corrosion phenomenon;
The xenon light aging test: specimen size 30 * 20 * 1mm, coat-thickness 0.08mm places xenon light aging test case with test piece, and 3kW xenon lamp irradiation 1000h observes variation;
Freezing test: specimen size 30 * 20 * 1mm, coat-thickness 0.08mm places cold box with test piece, and-45 ℃, 1000h observes variation;
Coating toughness and adhesion test: to through the test piece of above-mentioned freezing test, folder diameter 1mm steel wire doubling 4 times (positive and negative each 2 times) is observed coating damage, form comes off;
The weight loss on heating test: body material is that carbon steel or stainless test piece Heating temperature are 500 ℃; Body material is that the test piece Heating temperature of aluminium is 360 ℃; Constant temperature 1h; Calculating is because of the weight loss on heating of weight loss on heating, and weight loss on heating is test back test piece weight that loses and a per-cent of testing preceding test piece weight.
The result that above-mentioned test piece is made an experiment is shown in following table table 2:
Table 2
From the test piece test-results of table 2 illustrated embodiment 8～12, comparative example 4～6, can find out: embodiment 1～5 said coating, component and the component ratio selected for use are suitable, and the coating of preparing shows excellent physico-chemical property; The coating of embodiment 1～3 and embodiment 5 said coating preparations; In weight loss on heating test weight loss on heating all 0.6% and below; The coating of the said coating preparation of embodiment 4 particularly, weight loss on heating is 0%, coating is not damaged; Proved that coated material of the present invention can at high temperature use, and has resistance to elevated temperatures.
Test piece test-results from table 2 illustrated embodiment 8～12; Can find out: embodiment 5 said coating have adopted linear polyphenylene sulfide as base resin; The coating physico-chemical property that the coating of preparing has adopted embodiment 1～4 said coating of branched chain type polyphenylene sulfide to prepare is poor, so the preferred branched chain type polyphenylene sulfide of coating of the present invention is as base resin.
Test piece test-results from table 2 illustrated embodiment 8～12, comparative example 4; Can find out: comparative example 1 said coating; Its polyphenylene sulfide consumption is few, and has only used polyphenylene sulfide and exhaustive fluorinated ethylene propylene as base resin, makes through the coating physico-chemical property of this coating preparation very poor; From table 2 illustrated embodiment 8～12, comparative example 5 described test piece test-results; Can find out: comparative example 2 said coating; Use polyphenylene sulfide in high proportion; Make that the coating physico-chemical property that passes through this coating preparation is also bad, so the consumption of coating polyphenylene sulfide of the present invention selects 60～90% for use.
Test piece test-results from table 2 illustrated embodiment 8～12, comparative example 6 said coating preparations; Can find out: comparative example 3 said coating; Though its polyphenylene sulfide consumption is more suitable; But owing to only used polyphenylene sulfide and ethylene-tetrafluoroethylene copolymer resins as base resin; Make that the coating physico-chemical property that passes through this coating preparation is also very poor, so the present invention uses polyphenylene sulfide, exhaustive fluorinated ethylene propylene and the composite use of ethylene-tetrafluoroethylene copolymer resins, common base resin as coating of the present invention; Not only have fabulous consistency between the component, but also make coating of the present invention have both excellent physical chemistry, the mechanics of machinery characteristic of said three kinds of base resins.
Claims (10)
1. the polyphenylene sulfide modified paint is characterized in that, percentage composition meter by weight is composed of the following components:
Polyphenylene sulfide 60～90%,
Exhaustive fluorinated ethylene propylene 3～25%,
Ethylene-tetrafluoroethylene copolymer resins 3～20%,
Molybdenumdisulphide 1～5%,
Graphite 1～5%,
The filler surplus,
Said filler is any one or a few the mixture in zinc oxide, aluminum oxide, silit and the chromium sesquioxide.
2. polyphenylene sulfide modified paint according to claim 1 is characterized in that, said polyphenylene sulfide is the branched chain type polyphenylene sulfide.
3. polyphenylene sulfide modified paint according to claim 2 is characterized in that, said polyphenylene sulfide with limiting viscosity be 5～20mL/g.
4. according to the arbitrary described polyphenylene sulfide modified paint of claim 1～3; It is characterized in that; The weight percentage of said polyphenylene sulfide is 60～80%; The weight percentage of said exhaustive fluorinated ethylene propylene is 5～20%, and the weight percentage of said ethylene-tetrafluoroethylene copolymer resins is 5～20%.
5. according to the arbitrary described polyphenylene sulfide modified paint of claim 1～3, it is characterized in that said zinc oxide is ZnOw.
6. polyphenylene sulfide modified paint according to claim 5 is characterized in that, the length-to-diameter ratio of said ZnOw is 5:1～30:1.
7. according to the arbitrary described polyphenylene sulfide modified paint of claim 1～3, it is characterized in that said aluminum oxide is an Alpha-alumina.
8. according to the arbitrary described polyphenylene sulfide modified paint of claim 1～3, it is characterized in that the particle diameter of said silit and chromium sesquioxide is less than or equal to 0.01mm.
9. the application of the arbitrary described polyphenylene sulfide modified paint of claim 1～8 is characterized in that, with the polyphenylene sulfide modified paint be used on the metal matrix material make resistance to wear, the corrosion resistance nature matrix material.
10. the preparation method of resistance to wearing described in the claim 9, corrosion resistance nature matrix material is characterized in that, comprises said polyphenylene sulfide modified paint is sprayed on the metal matrix material heating, melting and solidification film forming.
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| CN103587164B (en) * | 2013-11-13 | 2015-06-03 | 湖北三江航天江河化工科技有限公司 | Conductive coating |
| CN103740271B (en) * | 2014-02-11 | 2015-02-18 | 南通新昱化工有限公司 | Wear-resistant and impact-resistant coating |
| CN103740271A (en) * | 2014-02-11 | 2014-04-23 | 南通新昱化工有限公司 | Wear-resistant and impact-resistant coating |
| CN103788784A (en) * | 2014-02-28 | 2014-05-14 | 葫芦岛亿拓实业有限公司 | Anti-adhesion coating for inner walls of ship pipelines and preparation method thereof |
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| CN114231165A (en) * | 2021-12-27 | 2022-03-25 | 扬州市维纳复合材料科技有限公司 | Polyphenylene sulfide powder coating and preparation method and application thereof |
| CN114702898A (en) * | 2022-04-20 | 2022-07-05 | 浙江新和成特种材料有限公司 | Wear-resistant and corrosion-resistant polyphenylene sulfide coating on metal surface and preparation method thereof |
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