CN1306108C - Single sided fluoro resin varnished fabric and its manufacturing method - Google Patents
Single sided fluoro resin varnished fabric and its manufacturing method Download PDFInfo
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- CN1306108C CN1306108C CNB2005100242618A CN200510024261A CN1306108C CN 1306108 C CN1306108 C CN 1306108C CN B2005100242618 A CNB2005100242618 A CN B2005100242618A CN 200510024261 A CN200510024261 A CN 200510024261A CN 1306108 C CN1306108 C CN 1306108C
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Abstract
The present invention discloses single-sided leather cloth made of fluor resin, which comprises a base sheet (1) of the leather cloth, one or more bonding coating layers (2) arranged on at least one main surface of the base sheet, and one or more fluor resin layers (3), wherein the bonding coating layer is selected from an alkanoyl polyamide-imide resin layer, a polyimide resin layer, a polyphenylene sulfide layer, a polyethersulfone layer, a polyether ether ketone layer, a silicate coating layer, a phosphate coating layer, a borate coating layer, a chromic acid-phosphoric acid coating layer and an orthoboric acid-chromic acid-phosphoric acid coating layer; one or more fluor resin layers (3) arranged on one or more bonding coating layer of the main surface of the coating base sheet. The present invention also relates to a manufacturing method of the single-sided leather cloth.
Description
Technical field
The present invention relates to the manufacture method of a kind of single sided fluoro resin varnished fabric and this single sided fluoro resin varnished fabric.
Background technology
Fluoroplastics polytetrafluoroethylene (PTFE), perfluoroethylene-propylene (FEP), soluble poly tetrafluoroethylene (PFA) etc. have outstanding chemical stability, electrical insulating property, self lubricity, noninflammability, non-viscosity, Weather-resistant and high low temperature adaptability.Fluoroplastics are widely used in the every field of national economy and national defence as the engineering plastics of specific performance, and wherein the polytetrafluoroethylene (PTFE) cost performance is that other fluorine-containing engineering material can't be compared, and it is most widely used.
In order to reduce cost or to improve the mechanical strength of ptfe sheet, those skilled in the art produces high temperature resistant and corrosion resistant polytetrafluoroethylene (PTFE) dipping varnished cloth.It is that a kind of usefulness can be born cloth more than 10 minutes or fabric as substrate, the compound that the dipping polyflon forms on substrate under 360-380 ℃ of sintering temperature.The example of described substrate has for example glass cloth, high strength aramid fiber cloth, wire cloth etc.This dipping varnished cloth has improved the mechanical strength of the slim and bandcast material of polytetrafluoroethylene (PTFE) greatly.
For example, Qian Zhimian has proposed a kind of manufacture method of polytetrafluoroethylene (PTFE) glass varnished cloth in " Organic fluoride industry " the 3rd phase of calendar year 2001 (the 4th says, ptfe emulsion processing "), and it comprises the steps:
(1) the glass fiber fabric base sheet is carried out dewaxing treatment;
(2) use ptfe emulsion to flood described glass fiber fabric base sheet, dry then, perhaps baking again;
(3) operation of repeating step (2) once or secondary, the composition of the polytetrafluoroethylene (PTFE) maceration extract that use this moment can be identical or different with step (2);
(4) obtain the finished product of polytetrafluoroethylene (PTFE) glass varnished cloth behind the sintering.
The varnished cloth that makes in this way is a kind of two-sided varnished cloth, promptly is coated with polytetrafluorethylecoatings coatings on two surface.
The purposes of described dipping polytetrafluoroethylene (PTFE) varnished cloth comprises occasions such as the heat pressure adhesive of plastic products for example or fused antiseized, the electric antistatic of high temperature, electric shock, as antiseized, high temperature electric insulation adhesive tape of antiseized, the flat plate mold of the dryer surface of anti-paste, the insulation of Electric Motor paper of the plastic bag sealing machine of package packing machine, bakeware for food, textile industry etc.Antiseized purposes with flat plate mold is an example, and it need stick on the polytetrafluoroethylene (PTFE) varnished cloth on the flat plate mold surface, utilizes the antistick characteristic of the polytetrafluorethylecoatings coatings of varnished cloth to reach the purpose of the mechanograph demoulding subsequently.Require the one side of varnished cloth this moment is to stick on the die surface, and another side is the antiseized demoulding that is beneficial to mould.
But can not coating adhesive without the polytetrafluoroethylene (PTFE) varnished cloth of surface activation process, this be because:
1) surface free energy of polytetrafluoroethylmaterial material low (surface tension is 0.019N/m), be that known solid material (removes perfluorocarbon polymer FEP, PFA etc. are outer) in surface free energy minimum, nearly all known solid material (removes perfluorocarbon polymer FEP, PFA etc. are outer) all can not adhere in its surface, has only the liquid of surface free energy below 0.019N/m moistening its surface fully, but known most of adhesive surface free energy is all more than 0.019N/m, all can not be moistening fully in its surface, therefore most of adhesives can not adhere on the polytetrafluoroethylene (PTFE) well;
2) degree of crystallinity is big, chemical stability good, almost there is not solvent can make polytetrafluoroethylene (PTFE) dissolving or swelling, when adhesive coated on ptfe surface, be difficult to take place the phase counterdiffusion of chain territory and the entanglement of high-polymer molecular chain, can not form the stronger adhesion of adhesive and polytetrafluoroethylmaterial material;
3) structure height symmetry is a non-polar polymeric material.Polytetrafluoroethylene (PTFE) does not possess the condition that forms dipole-dipole force and induction force to adhesive, can only form more weak dispersion force, and therefore less Van der Waals force causes adhesive relatively poor in polytetrafluoroethylmaterial material surface adhesion performance.
For overcoming above-mentioned defective, this area has proposed ptfe surface is carried out activating treatment method, so that adhesion agent.The technology of known activation processing ptfe sheet of those skilled in the art or film is being used or the method studied has sodium-naphthalene chemistry of complex facture, irradiation grafting method, corona treatment method, low-temperature plasma method, surface-modification method etc.But using method remains strong, the also operable sodium of common lab-naphthalene chemistry of complex facture of better, the bonding reliability of relatively economical in above these methods widely at present.
Sodium-naphthalene complex compound single face chemical treatment ptfe surface method comprises the steps:
(1) preparation sodium-naphthalene complex solution;
(2) with special resin or adhesive tape the polytetrafluoroethylene (PTFE) varnished cloth is carried out the single face protection;
(3) the not protection surface of usefulness sodium-naphthalene complex solution single face activation processing polytetrafluoroethylene (PTFE) varnished cloth;
(4) lip-deep product sodium fluoride of flush away polytetrafluoroethylene (PTFE) glass varnished cloth etc. and sodium naphthalene complex solution obtain the polytetrafluoroethylene (PTFE) glass varnished cloth that one side can be glued and one side is antiseized.
But this method has following shortcoming:
(1) can produce toxic smog in step (3) during with sodium-naphthalene complex solution single face activation processing polytetrafluoroethylene (PTFE) varnished cloth;
(2) can produce a large amount of waste liquids at lip-deep product sodium fluoride of step (4) flush away polytetrafluoroethylene (PTFE) glass varnished cloth etc. during with sodium naphthalene complex solution.
In addition, the cost of material of sodium-naphthalene complex solution is higher, process for preparation is complicated, and 1 ton of polytetrafluoroethylene (PTFE) varnished cloth of single face activation processing, cost of material need 10,000 yuans approximately.And carry out producing waste gas, waste water or lean solution a large amount of, that toxicity is higher, sodium-naphthalene complex compound raffinate in the process of single face activation processing polytetrafluoroethylene (PTFE) varnished cloth at sodium-naphthalene complex solution, very serious environmental issue is arranged.
In view of the above-mentioned defective of two-sided varnished cloth, from literary composition a kind of manufacture method of single face varnished cloth has been proposed " polytetrafluoroethylene (PTFE) single face varnished cloth " literary composition (" Organic fluoride industry " the 4th phase in 2002), it comprises the steps:
(1) ptfe emulsion is coated on the first type surface of glass cloth substrate;
(2) dry and sintering.
In order to prevent that ptfe emulsion from infiltrating on another surface of substrate, this method has been taked following measure:
(1) uses very fine and close glass cloth substrate;
(2) when applying ptfe emulsion, be close on the non-coating surface of substrate,, accelerate the deposition of coating emulsion to impel water evaporates with a heating plate.
This method need not to use sodium-naphthalene complex compound that polytetrafluoroethylene (PTFE) glass varnished cloth is carried out the single face activation processing, can eradicate the pollution of the raffinate liquid of sodium-naphthalene complex compound processing procedure, cleaning solution and sodium-naphthalene complex compound to environment, and the huge social benefit is arranged.
But, because contained complexed surfactant [anion surfactant perfluoro caprylic acid ammonia and non-ionic surface active agent (TX-10 or OP-10 etc.)] has strong permeability in the ptfe emulsion.When the ptfe emulsion that single face applies, just be to use high fine and close glass cloth, still can be penetrated into reverse side, therefore be difficult to reach the requirement of " technology will guarantee that ptfe emulsion can not be penetrated into reverse side ".Still do not see the report that this single face polytetrafluoroethylene (PTFE) varnished cloth technology is used up to now on adhesive plaster.
Therefore, still need to develop a kind of manufacture method of single face varnished cloth and this single face varnished cloth of easy manufacturing.
The content of invention
An object of the present invention is to provide a kind of single face varnished cloth of easy manufacturing.
Another object of the present invention provides a kind of manufacture method of single face varnished cloth of the present invention.
The inventor has proposed a kind of fluororesin single face varnished cloth and manufacture method thereof of novelty through after the long-term further investigation.
Therefore, one aspect of the present invention is a kind of fluororesin single face varnished cloth, and it comprises:
(1) varnished cloth substrate;
(2) but place one or more layers adhesive coating layer at least one first type surface of this substrate, but described adhesive coating layer is selected from heterocyclic polyamide imide resin layer, polyimide resin layer, polyphenylene sulfide layer, polyethersulfone resin layer, polyether-ether-ketone resin layer, silicate coating, phosphate coating, borate coating, chromic acid-phosphoric acid coating, boric acid-chromic acid-phosphoric acid coating;
(3) but place one or more layers fluororesin layer on described one or more layers adhesive coating layer of a first type surface of this coated substrates.
Another aspect of the present invention is a kind of fluororesin single face varnished cloth, and it comprises:
(1) varnished cloth substrate;
(2) place one or more layers fluororesin layer on two first type surfaces of this substrate respectively;
(3) but one or more layers adhesive coating layer on one or more layers described fluororesin layer of a first type surface of described coated substrates, but described adhesive coating layer is selected from heterocyclic polyamide imide resin layer, polyimide resin layer, polyphenylene sulfide layer, polyethersulfone resin layer, polyether-ether-ketone resin layer, silicate coating, phosphate coating, borate coating, chromic acid-phosphoric acid coating, boric acid-chromic acid-phosphoric acid coating.
Of the present invention is a kind of manufacture method of fluororesin single face varnished cloth more on the one hand, and it comprises:
(1) randomly the varnished cloth substrate is carried out surface treatment;
(2) at least one first type surface of substrate, but the dipping or apply one or more layers stick coating, but described stick coating is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid;
(3) but on the described stick coating of a first type surface of substrate, apply one or more layers fluoro-resin emulsion;
(4) drying obtains the fluoro resin varnished fabric that one side can be glued and one side is antiseized behind baking, the sintering.
Another aspect of the present invention provides a kind of manufacture method of fluororesin single face varnished cloth, and it comprises:
(1) randomly the varnished cloth substrate is carried out surface treatment;
(2) dipping or one or more layers fluoro-resin emulsion of dual coating;
(3) but on a first type surface of described coated substrates, apply one or more layers stick coating, but described stick coating is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid;
(4) drying, baking, sintering obtain the fluoro resin varnished fabric that one side can be glued and one side is antiseized.
The specific embodiment
In the present invention, term " drying " is meant, if water paint then carries out drying near the boiling point of water; If solvent based coating then carries out drying near main solvent boiling point.For example, the ptfe emulsion baking temperature is generally 70-110 ℃; Be generally drying time 2-10 minute.
In the present invention, term " main solvent " is meant in mixed solvent system, content surpass 20 volume %, boiling point the highest solvent.
In the present invention, term " is baked and banked up with earth " and is meant at the following 20-60 of fluororesin fusing point ℃ and cures.For example the ptfe emulsion stoving temperature is generally 270-300 ℃; The time of curing was generally 1-5 minute;
In the present invention, term " sintering " is meant at the fluororesin fusing point to more than the fusing point 150 ℃, be preferably fusing point above 20 ℃ to above 100 ℃ of fusing point, more preferably fusing point carries out sintering to 80 ℃ temperature more than the fusing point for above 40 ℃.For example, to be generally 370-400 ℃, tetrafluoroethylene/hexafluoropropylene copolymer sintering temperature be that 350-380 ℃, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer sintering temperature are 360-390 ℃ to the sintering temperature of polytetrafluoroethylene (PTFE).Sintering time can change according to sintering temperature and thickness, and sintering temperature height, required sintering time are just few; Sintering temperature is low, and required sintering time is just long; Same temperature, thick goods sintering time is longer.General sintering time is 1-20 minute.
Substrate
As the material of substrate of the present invention be known in the art as the varnished cloth substrate any material, physics or chemical change can not take place placing under 360-380 ℃ the temperature more than 10 minutes in it.The example of suitable substrate for example has woven cloths, woven felt, weaves blanket, woven webs, aluminium, copper, nickel or stainless steel, glass, pottery, asbestos, aramid fiber, polyamidoimide, polyimides, polyarylsulfone (PAS), polyether-ether-ketone, polyphenylene sulfide.Better be weaving or nonwoven material of glass yarn, high strength aramid fiber silk, wire or the formation of its mixture.
The thickness of substrate is without particular limitation, depends on concrete purposes.
Because the cause of manufacturing technique, some substrate (for example glass fabric) can contain paraffin or the starch as lubricant.But this paraffin or starch can influence the adhesion of adhesive coating layer or fluoro-resin emulsion.Therefore need it is carried out pre-treatment before coating, promptly dewaxing or destarch are handled.This pre-treating method is known in the art.But,, then generally no longer need to carry out pre-treatment if in the substrate manufacture process, use the contour fluorine resin emulsion of polytetrafluoroethylene (PTFE) as lubricant.Those of ordinary skill in the art can determine easily that according to its professional knowledge needs carry out the situation of pre-treatment and the method for pre-treatment.
But stick coating
But the film-forming components that is applicable to stick coating of the present invention should be the material that chemical change does not take place in sintering process of the present invention or necessary mechanical strength is still arranged behind oversintering.But the film-forming components that is used to form the present invention's adhesive coating layer is selected from the coating of heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid formation.
In a better example of the present invention, by the gross weight of coating solid, the content of described film-forming components is 17-100 weight %, is preferably 25-90 weight %, is preferably 40-80 weight %.
Be applicable to that heterocyclic polyamide acid imide of the present invention has following structure:
Wherein, R is phenyl, naphthyl, diphenyl ether, benzophenone, biphenyl, 2,2-diphenyl Hexafluoro acetone; N is 10-1000, is preferably 50-500.
At one preferably in the example of the present invention, described polyamidoimide has following general formula:
Wherein, n is 10-1000, is preferably 50-500.
The synthetic method that is applicable to polyamidoimide of the present invention can be this area method commonly used, for example, and can be referring to " synthetic adhesive " (Science Press's in August, 1980) and the Chinese patent CN103551A of Yang Yukun etc.
Be applicable to that polyamide-imide resin of the present invention also is commercially available.For example, it can HY660 available from Changzhou rainbow ripple coating Co., Ltd.
The aromatic diamine that is used to make polyimide resin of the present invention is selected from P-pHENYLENE dI AMINE, m-phenylenediamine, 4,4-benzidine, diamines diphenyl ether, two amido diphenyl sulfones, 4,4-two amido naphthalenes, 2, two (4-amido benzene) HFC-236fa of 2-etc.
The example that is used to make aromatic acid's dicarboxylic anhydride of polyimide resin of the present invention has Pyromellitic Acid dicarboxylic anhydride, tetracarboxylic acid naphthalene dianhydride, tetracarboxylic acid diphenyl ether dianhydride, tetracarboxylic acid benzophenone dianhydride, 2,2-two (3, the 4-phthalic anhydride).
The method that is used for synthesis of polyimides can be this area method commonly used, for example can be referring to " glued handbook (National Defense Industry Press's in February, 1989) and the Chinese patent 1101654A of Xia Wengan etc.
Be applicable to that polyimides of the present invention also is commercially available, for example, it can HY770 available from Changzhou rainbow ripple coating Co., Ltd.
Be applicable to that polyethersulfone resin of the present invention (PES) is commercially available, for example, it can be the coating level Gefone PES available from last Hailin root chemical company.
Be applicable to that polyphenylene sulfide of the present invention (PPS) can buy from the market.For example, available from the former powder of polyphenylene sulfide PPS of U.S. Philips company.
Above-mentioned organic resin can use separately or two or more are used in combination.At one preferably in the example of the present invention, with the weight mixing ratio is 1: 9-9: 1 polyamidoimide mixes with fluororesin (for example polyflon) with the mixture of polyether sulfone with the mixture of polyphenylene sulfide or polyamidoimide that (the weight mixing ratio is 1: 9-9: 1), form the coating of an anti-cohesional failure behind oversintering.
Be applicable to that inorganic adhesive of the present invention has phosphate (as phosphoric acid-cupric oxide bonding agent), silicate (sodium metasilicate-oxide, sodium metasilicate-nature of glass glaze slag-iron oxide), borate (borsal-calcium carbonate or barium-five phosphorous oxide) etc., can be referring to " the inorganic adhesive chapters and sections in the glued handbook (National Defense Industry Press's in February, 1989) of Xia Wengan etc.
Be applicable to that inorganic adhesive of the present invention also has chromic acid-phosphoric acid or dibastic sodium phosphate (potassium), boric acid-chromic acid-phosphoric acid or dibastic sodium phosphate (potassium), the adhesive of phosphoric acid-chromic acid series and fluoro-resin emulsion can form the higher coating of surface tension, if the adding filler has better coating machine intensity and adhesive strength.In and system sticking, add boric acid, can improve the compatibility of phosphoric acid-chromic acid or chromate binding system and fluororesin at phosphoric acid-chromic acid or chromate.Owing to have unoccupied orbital in the outer-shell electron track of boron atom in the boric acid molecule; The outer-shell electron track of the fluorine atom in the fluororesin is in saturation state, can form bonding effect to the material that unoccupied orbital is provided, but so the adding of boric acid can improve the coating that stick coating forms and the fusion performance of fluor resin coating.
Above-mentioned organic material can be added to and form solution or dispersion liquid in the suitable solvent.Described solvent does not have special restriction, if it can be used as coated carrier and not can with described coating solute and the substrate generation that will apply chemical reaction.The solvent that is suitable for comprises amide-type, for example N,N-dimethylacetamide, N-Methyl pyrrolidone etc.; Ketone, for example butanone, methyl iso-butyl ketone (MIBK) etc., diacetone alcohol etc.; Ester class, for example butyl acetate, ethyl acetoacetate etc.; Benzene class, for example toluene, dimethylbenzene etc.; Ethers, for example dioxane, diethylene glycol dimethyl ether etc.Described solvent can use separately or two or more are used in combination.
Also can in coating of the present invention, add fluororesin, for example ptfe emulsion, polytetrafluoroethylene (PTFE)/HFC-236fa copolymer emulsion, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer emulsion etc.But add the compatibility that described fluororesin can improve adhesive coating layer and fluororesin layer in the single face varnished cloth, thereby improve the shear strength of product.But by the solid weight meter of stick coating, the content of described fluororesin can be 0-60%, is preferably 10-40%, more preferably 15-35%.
It is without particular limitation to prepare the method that is coated with feed liquid, and it can be this area method commonly used.In a better example of the present invention, when the water-borne dispersions of preparation polyamidoimide and/or polyimides, make polyamidoimide and/or the polyimides solution in solvent earlier, subsequently solution being added to allows resin separate out in the water, add suitable wetting agent, dispersant again, adopt suitable pulverizer then, as ball mill, pulverize polyamidoimide and/or polyimides (as being crushed to below the 8 μ m), become the more stable polyamidoimide and/or the aqueous dispersion of polyimides.
The water-borne dispersions of polyether sulfone can adopt following method to make: with polyether sulfone, wetting agent, dispersant, water, pack in the ball mill, randomly add some polar solvents, after pulverizing, can form very thin particle (below 8 μ m), become the aqueous dispersion of more stable polyether sulfone.
The water-borne dispersions of polyphenylene sulfide can adopt following method to make: the polyphenylene sulfide fine powder is placed porcelain dish, be paved into thick about 2 centimetres one deck, be placed in the convection oven of 270 ℃ of constant temperature and handled 6-12 hour, improve the easily comminuted of polyphenylene sulfide.Treated polyphenylene sulfide is mixed with wetting agent, dispersant etc., place pulverizer to be crushed to very thin particle (below 8 μ m), become the aqueous dispersion of more stable polyphenylene sulfide.
In a better example of the present invention, the content that is coated with resin film-forming components in the feed liquid of formation is 10-60 weight %.
In another better example of the present invention, the concentration that is coated with the inorganic film-forming components that is selected from silicate, phosphate, borate, chromic acid-phosphoric acid or boric acid-chromic acid-phosphoric acid in the feed liquid of formation is 5-30 weight %.
In addition, can in coating, add filler, make coating have better anti-cohesional failure ability and coating surface to produce crude effect, help on coating surface applying adhesive again.
The filler that adds in coating can be the graininess of various anti-sintering conditions, powdery, sheet etc. organic, inorganic material is as mica, titanium dioxide, pearl essence, glass (glass powder, bead, Hollow Glass Sphere etc.), metal or alloy (stainless steel powder), metal oxide (chrome green powder etc.), indissoluble salt (blanc fixe etc.), organic polymer (aramid fiber powder, polybenzoate etc.), carbon fiber, (oxide of silicon and other metal etc. is as floating pearl for pottery, ceramic powder etc.), high temperature resistant inorganic pigment (chrome yellow, chrome red, cadmium yellow, cadmium red, molybdate red, barba hispanica, iron oxide black etc.), resistant to elevated temperatures organic pigment is (as phthalocyanine series, quinacridone series etc.), carborundum powder etc.The total amount of filler should account for the 0-75 weight % of coating solid constituent, is preferably 10-60 weight %, more preferably 20-50 weight %.Pigment plays painted effect, and general consumption is lower, accounts for the 0-10 weight % of coating solid constituent.
The granularity of filler can influence the surface roughness of coating, requires the granularity of filler to be generally the 120-2500 order according to surface roughness, is preferably the 325-1200 order.
In preparation is to improve the coating additive that the quality of coating also can add various routines during coating, can be with reference to " coating additive " kind and the Performance Manual (Chemical Industry Press's November nineteen ninety) of works such as Qian Fenglin about coating additive.For making fillers dispersed can add wetting agent, dispersant, anti-heavy agent etc.; Coating is stable can to add emulsifying agent, thickener etc. in order to make; For coating being steeped less or stillly can adding defoamer or defoamer; The coating coating is effective can to add wetting agent etc. in order to make.For making the stable general surfactant that adds of coating is nonionic and anionic surfactant.In order to improve coating and storage stability, can in coating, add water-soluble high-molecular compound, as polyvinyl alcohol, PVP, methylcellulose, hydroxyethylcellulose etc., regulate dope viscosity.By the resin solid in the coating, the content summation of various auxiliary agents is generally 0-10 weight % in coating, is preferably 1-5 weight %.
In the present invention, but also can use various existing coating as described stick coating.For example, the disclosed aqueous primer composition of Chinese patent CN1304431A (drawing in full at this is reference), the disclosed base coat composition of Chinese patent CN1145627A (drawing in full at this is reference).
Can use various suitable painting methods to apply described coating, the painting method that is suitable for is without particular limitation, it can be any method known in the art, its indefiniteness example for example have spray, brush, dipping, cylinder transfer, showering etc., wherein, better be that spraying, cylinder shift, dipping.
After applying the described coating of one deck, generally need after super-dry, apply another coating or fluororesin-coated emulsion again.Also can be dry after baking applies coating or fluoro-resin emulsion again.
Fluoro-resin emulsion
The indefiniteness example that is applicable to fluoro-resin emulsion of the present invention has ptfe emulsion, tetrafluoroethylene/hexafluoropropylene copolymer emulsion, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer emulsion etc.These emulsions are commercially available.
The fine and close substrate that uses the inventive method to need not the prior art requirement just can make the single face varnished cloth, just is to use the industry slim glass cloth commonly used also can implement this patent, for example uses slim alkali-free glass cloth EW60 or EW40 (Yaohua Glass-making Plant, Shanghai's production).Use the inventive method on the varnished cloth substrate that has cleaned, to flood or but two-sided or single face applies one or more layers stick coating, carry out drying subsequently, perhaps toast again, sintering, can improve the compactness of varnished cloth substrate effectively.But on applying the varnished cloth substrate of stick coating, during the fluororesin-coated emulsion of single face, can prevent effectively that fluoro-resin emulsion is penetrated into another side, not need to adopt the method for heating simultaneously.Because but stick coating and fluoro-resin emulsion have amalgamation preferably when sintering, but so the faying face of stick coating and the formed coating of fluororesin higher peel strength is arranged; Simultaneously but the formed coating of stick coating has bigger surface tension and surperficial crude degree, can with excellent bonds such as adhesive.
Further specify the present invention below in conjunction with embodiment, but the present invention is not limited to these embodiment.Except as otherwise noted, otherwise in an embodiment all " % " and " part " all are benchmark with weight.
Embodiment
Formulation example 1: the water-borne dispersions of preparation polyamidoimide
(HY 660 with the commercially available polyamideimide resin solution of 100 grams, available from Changzhou rainbow ripple coating Co., Ltd, solids content is 33% N-Methyl pyrrolidone solution) add in the 65 gram water resin is separated out, pulverize in the mixture input ball mill with resin and water again, obtain the water-borne dispersions of average grain diameter 5 μ m polyamidoimide following, solids content 20%.
Formulation example 2: the water-borne dispersions of preparation polyether sulfone
60 gram polyether sulfones (go up Hailin root chemical company, coating level Gafone PES) and 180 gram water are packed in the ball mill, add 60 gram N-Methyl pyrrolidone polar solvents again, be ground into below the 5 μ m, the aqueous dispersion of solids content 20%, stable polyether sulfone.
Formulation example 3: the water-borne dispersions of preparation polyphenylene sulfide
100 gram polyphenylene sulfide fine powders (available from U.S. Philips company), 145 gram water and 35 grams are packed in the ball mill as 5% polyacrylamide solution of suspension stabilizer, add 60 gram N-Methyl pyrrolidone polar solvents again, be ground into that 5 μ m are following, the aqueous dispersion of the polyphenylene sulfide of solids content 20%.
Formulation example 4: preparation filler suspension
With 100 grams, 325 purpose glass fiber powders, 5 gram wetting agent OP-10,2 gram dispersant sodium laurates, 5 gram modified poly ethylene micro mist waxes (Ffke-906) as antiprecipitant and 138 gram distilled water grinding machine for grinding 1 hour, obtain solids content and be 40% filler suspension.
Embodiment 1
(HY 770 to the commercially available polyimide solution of 100 grams, available from Changzhou rainbow ripple coating Co., Ltd, solids content is 100 grams) in add the anhydrous glycol dimethyl ether of 100 grams with regulator solution viscosity, to the 200 order glass fiber powders that wherein add 50 gram oven dry, mix the back and form coating.
With glass fibre substrate (EW60 of Yaohua Glass-making Plant, Shanghai alkali-free glass cloth) dewaxing treatment 5 minutes under 350 ℃ of high temperature, be immersed in then in the ptfe emulsion (FR301 of Shanghai Sanaifu New Material Co., Ltd product content 60 weight %), 80 ℃ of dryings form the fluororesin coated substrates after back 5 minutes.Repeat above-mentioned impregnation steps, make polytetrafluoroethylene (PTFE) behind the final sintering ride cloth thickness and be about 90 microns.
With the polyimides paint spay-coating that makes above on a first type surface of this coated substrates, coated weight makes that coating layer thickness is about 10 microns behind sintering, forms the single face varnished cloth through applying, then air drying, cured 2 minutes at 280 ℃, 350 ℃ of sintering 5 minutes.Obtain the single face varnished cloth.
Behind high temperature sintering, but the adhesive coating layer of described single face varnished cloth is made up of filler (glass fiber powder accounts for 71.4 weight %) and polyimide resin (accounting for 28.6 weight %).
For the ease of test, the polyimides coating that makes above is sprayed on simultaneously on two first type surfaces of this coated substrates, coated weight makes that each coating layer thickness is about 10 microns behind sintering, the two-sided test varnished cloth of formation through applying, air drying then, cured 2 minutes at 280 ℃, 350 ℃ of sintering 5 minutes.Obtain two-sided test varnished cloth.
The two-sided varnished cloth that glues that uses J-85 moisture-heat-proof epoxy stick to obtain is sandwiched in the middle of the standard aluminum alloy shearing test piece, solidifies 2 hours test cementing strength and other performance after room temperature is placed 24 hours under the effect of pressure at 100 ℃.With reference to the GB/T7124-86 standard, adopt the Instron puller system to carry out the shear strength test, detect the polytetrafluoroethylene (PTFE) varnished cloth wet-hot aging performance situation that obtains.Subtabulation 1 as a result.
Embodiment 2
To 30% commercially available polyamidoimide solution (HY660 of 100 grams, available from Changzhou rainbow ripple coating Co., Ltd, solids content is 30 weight %) the middle 100 gram N that add, the N-dimethylacetylamide is with regulator solution viscosity, to the 500 order glass fiber powders that wherein add 5.5 gram oven dry, mix the back and form coating.
Clean metal is weaved silk screen, then at nonwoven metal silk screen (400 order stainless steels, 304 silk screens, available from the new woven wire Co., Ltd of Anping County China) two first type surfaces on spray above-mentioned coating, but forms the coated substrates of coating adhesive coating layer after 10 minutes 85 ℃ of dryings.The repetitive coatings step reaches 15 microns until the coating layer thickness of drying.
Spraying one deck ptfe emulsion (FR301 on a first type surface of coated substrates, available from Shanghai Sanaifu New Material Co., Ltd), 80 ℃ of dryings 5 minutes, then cured 2 minutes at 280 ℃, subsequently 350 ℃ of sintering 5 minutes, obtain the single face varnished cloth, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide (accounting for 84.5 weight %) and filler (accounting for 15.5 weight %).
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 3
The filler suspension that the above-mentioned formulation example 4 of polyamidoimide water-borne dispersions, 10 weight portions that the above-mentioned formulation example 1 of 20 weight portions is made makes, 0.5 weight portion viscosity modifier (viscosity modifier 2038, available from Changfeng Chemical Plant, Shanghai) mix mutually, but make stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide (accounting for 50 weight %) and filler (accounting for 50 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 4
The aqueous dispersion of the polyamidoimide water-borne dispersions that the above-mentioned formulation example 1 of 20 weight portions is made, the polyphenylene sulfide that 20 weight portion formulation example 3 make, the filler suspension that 10 weight portion formulation example 4 make are mixed mutually, add 1 weight portion viscosity modifier (viscosity modifier 2038 is available from Changfeng Chemical Plant, Shanghai) but make stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide, polyphenylene sulfide (accounting for 66.7 weight % altogether) and filler (accounting for 33.3 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 5
Polyether sulfone water-borne dispersions, 10 weight portion ptfe emulsions (trade mark SFN-1, content 60 weight % ptfe emulsions that 20 weight portion formulation example 2 are made, available from two subsidiary factories of Sichuan morning twilight chemical research institute), the filler suspension that makes of 30 parts of formulation example 4 mixes, add 2 weight portion coalescents (10 weight % poly-vinyl alcohol solution) again but be made into stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyether sulfone, fluororesin (accounting for 57.1 weight % altogether) and filler (accounting for 42.9 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 6
The polyamidoimide water-borne dispersions that the above-mentioned formulation example 1 of 20 weight portions is made, filler suspension and 5 weight portions, 60% ptfe emulsion (trade mark SFN-1, the content 60 weight % ptfe emulsions that 6 weight portion formulation example 4 make, available from two subsidiary factories of Sichuan morning twilight chemical research institute) mix mutually, add 0.5 weight portion viscosity modifier (viscosity modifier 2038 is available from Changfeng Chemical Plant, Shanghai) but make stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide, fluororesin (accounting for 74.5 weight % altogether) and filler (accounting for 25.5 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 7
The polyamidoimide water-borne dispersions that the above-mentioned formulation example 1 of 10 weight portions is made, the polyether sulfone water-borne dispersions that 20 weight portion formulation example 2 make, the filler suspension that 10 weight portion formulation example 4 make are mixed mutually, make stick coating but add 1 weight portion hydroxyethylcellulose viscosity modifier.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide, polyether sulfone (accounting for 60.0 weight % altogether) and filler (accounting for 40.0 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 8
The polyamidoimide water-borne dispersions that the above-mentioned formulation example 1 of 15 weight portions is made, the polyphenylene sulfide water-borne dispersions that 20 weight portion formulation example 3 make, filler suspension and 3.5 weight portion ptfe emulsions (trade mark SFN-1, the content 60 weight % ptfe emulsions that 35 weight portion formulation example 4 make, available from two subsidiary factories of Sichuan morning twilight chemical research institute) mix mutually, add 1 weight portion, 0.5 weight portion viscosity modifier (viscosity modifier 2038 is available from Changfeng Chemical Plant, Shanghai) but make stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide, polyphenylene sulfide, fluororesin (accounting for 39.4 weight % altogether) and filler (accounting for 60.6 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 9
The polyamidoimide water-borne dispersions that the above-mentioned formulation example 1 of 10 weight portions is made, the polyether sulfone water-borne dispersions that 20 weight portion formulation example 2 make, the filler suspension that 60 weight portion formulation example 4 make are mixed mutually with 10 weight portions polytetrafluoroethylene (PTFE)/hexafluoropropene emulsion (trade mark FR463, content 50 weight % are available from Shanghai Sanaifu New Material Co., Ltd), add 1 weight portion, 0.5 weight portion viscosity modifier (viscosity modifier 2038 is available from Changfeng Chemical Plant, Shanghai) but make stick coating.
Make the single face varnished cloth with the method identical, but the adhesive coating layer of this varnished cloth is made up of film-forming resin polyamidoimide, polyether sulfone, fluororesin (accounting for 31.4 weight % altogether) and filler (accounting for 68.6 weight %) with embodiment 1.
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 10
1 part of phosphoric acid, 0.8 part of chromic acid, 0.2 part of boric acid are mixed with 10 parts of water, be made into phosphoric acid-chromic acid-boric acid composite coating adhesive.Tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer emulsion (tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer emulsion at 13 part 30%, content 30 weight % purchase in Shanghai Sanaifu New Material Co., Ltd) in add 5 parts of extender paste, 0.3 weight account polyethylene base pyrrolidones, 0.3 weight portion methylcellulose, 1 weight portion triethanolamines that formulation example 4 makes, be made into mixed emulsion.Before coating, the paint adhesive that is made into previously is added in this mixed emulsion, in 30 minutes, will coatings formulated be sprayed on the substrate subsequently by embodiment 1 described method, make the single face varnished cloth, but the adhesive coating layer of this varnished cloth is made up of film forming matter inorganic bond phosphoric acid-chromic acid-boric acid and fluororesin tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer (accounting for 74.7 weight % altogether) and filler (accounting for 25.3 weight %).
Make the two-sided varnished cloth of test usefulness and test with the method identical, the results are shown in table 1 with embodiment 1.
Embodiment 11
Make the single face varnished cloth with the method identical, but do not use filler with implementing 1 example.The results are shown in table 1.
Comparative example 1
With embodiment 1 described test method commercially available two-sided varnished cloth (Shanghai Yin Chuan water Plastic Products Co., Ltd polytetrafluoroethylene (PTFE) varnished glass cloth trade mark YCSFB-1 thickness is 0.1mm) is carried out shear strength test, the results are shown in table 1.
Comparative example 2
Sodium-naphthalene-oxolane surface treatment method with routine carries out surface treatment to commercially available two-sided varnished cloth (Shanghai Yin Chuan water Plastic Products Co., Ltd polytetrafluoroethylene (PTFE) varnished glass cloth trade mark YCSFB-1 thickness is 0.1mm).With embodiment 1 described test method it is carried out shear strength test, the results are shown in table 1.
Table 1 is respectively tested routine wet-hot aging performance information slip
| Embodiment | Coating | Shear strength after boiling (MPa) | ||||||
| Form | Content % | 0 | 24 hours | 48 hours | 72 hours | |||
| Film-forming resin | Fluororesin | Filler | ||||||
| 1 | Polyimides (PI)+filler | 28.6 | - | 71.4 | 11.8 | 11.6 | 11.3 | 11.0 |
| 2 | Polyamidoimide (PIA)+filler | 84.5 | - | 15.5 | 11.9 | 11.7 | 11.6 | 11.5 |
| 3 | Polyamidoimide+filler | 50.0 | - | 50.0 | 11.8 | 11.6 | 11.5 | 11.4 |
| 4 | PIA+ polyphenylene sulfide (PPS)+filler | 66.7 | - | 33.3 | 12.5 | 12.4 | 12.3 | 12.3 |
| 5 | Polyether sulfone (PES)+PPS+PTEF+ filler | 34.0 | 23.1 | 42.9 | 14.8 | 14.7 | 14.6 | 14.6 |
| 6 | The PIA+PTEF+ filler | 42.6 | 31.9 | 25.5 | 14.6 | 14.4 | 14.3 | 14.2 |
| 7 | The PIA+PES+ filler | 60.0 | - | 40.0 | 15.6 | 15.5 | 15.5 | 15.4 |
| 8 | The PIA+PPS+PTFE+ filler | 30.3 | 9.1 | 60.6 | 15.8 | 15.7 | 15.7 | 15.6 |
| 9 | The PRS+PPS+PTFE+ filler | 17.1 | 14.3 | 68.6 | 14.0 | 13.8 | 13.8 | 13.7 |
| 10 | Phosphoric acid+chromic acid+boric acid+PTFE+ filler | 25.3 | 49.4 | 25.3 | 13.8 | 13.6 | 13.3 | 13.1 |
| 11 | Polyimides (PI) | 100 | - | - | 9.9 | 9.6 | 9.3 | 9.0 |
| C1 | 0.53 | - | - | - | ||||
| C2 | 13.1 | 11.6 | 10.2 | 9.0 | ||||
In the methods of the invention, but on the fluoro resin varnished fabric of sintering, also can apply adhesive coating layer, but the inventor think and on unsintered fluoro resin varnished fabric, apply easily, and can be once sintered less, few one procedure, energy savings; Simultaneously on unsintered varnished cloth, but perhaps apply on the coating that is coated with stick coating, help coating and sprawl on existing coating on the base material and permeate, the easier one that is fused into mutually produces active force between strong coating when sintering.
The method of using the present invention to make the single face varnished cloth is compared with traditional method:
(1) deducts the step of activation processing single face polytetrafluoroethylene (PTFE) varnished cloth, simplify working process, improve working efficiency;
(2) remove expensive, the inflammable sodium-naphthalene complex solution of use from, reduce manufacturing cost, improve safety in production;
(3) removed from the toxicity that produces in the original activation processing polytetrafluoroethylene (PTFE) varnished cloth process higher, reluctant waste gas, waste water or lean solution, sodium-naphthalene complex compound raffinate, help environmental protection.The inventive method is the resource decrement type that meets national industrial policies, the clean preparation method that pollutes decrement type.
In addition, but compare, in coating, add the shear strength that fluororesin can improve each layer on the varnished cloth generally with the adhesive coating layer of fluorine resin not.
Claims (42)
1. fluororesin single face varnished cloth, it comprises:
(1) varnished cloth substrate;
(2) but place one or more layers adhesive coating layer at least one first type surface of this substrate, but the film-forming components of described adhesive coating layer is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid;
(3) but place one or more layers fluororesin layer on described one or more layers adhesive coating layer of a first type surface of this coated substrates.
2. fluororesin single face varnished cloth as claimed in claim 1, but it is characterized in that can adding fluororesin in the described adhesion coating; But the fluororesin of fluororesin in the described adding adhesive coating layer and/or formation fluororesin layer comprises polytetrafluoroethylene (PTFE), tetrafluoroethylene/hexafluoropropylene copolymer, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer, polytrifluorochloroethylene, hexafluoropropene/tetrafluoroethylene/vinylidene fluoride copolymers, and two or more mixture.
3. fluororesin single face varnished cloth as claimed in claim 1 or 2, also contain the filler that accounts for coating solid constituent 0-75 weight % but it is characterized in that forming in the coating of described adhesive coating layer, described filler is selected from mica, titanium dioxide, pearl essence, glass powder, bead, Hollow Glass Sphere, stainless steel powder, aluminium powder chrome green powder, blanc fixe, aramid fiber powder, polybenzoate, carbon fiber, ceramic powder, chrome yellow, chrome red, cadmium yellow, cadmium red, molybdate red, barba hispanica, iron oxide black, phthalocyanine, quinacridone, carborundum powder.
4. fluororesin single face varnished cloth as claimed in claim 1 or 2, also contain the coating additive that accounts for coating solid constituent 0-10 weight % but it is characterized in that forming in the coating of described adhesive coating layer, it is selected from dispersant, anti-heavy agent, emulsifying agent, thickener, defoamer, wetting agent.
5. fluororesin single face varnished cloth as claimed in claim 1 or 2 is characterized in that described varnished cloth substrate is selected from woven cloths, woven felt, weaves blanket, woven webs, aluminium, copper, nickel or stainless steel, glass, pottery, asbestos, aramid fiber, polyamidoimide, polyimides, polyarylsulfone (PAS), polyether-ether-ketone, polyphenylene sulfide.
6. fluororesin single face varnished cloth as claimed in claim 1 or 2 is characterized in that the gross weight by the coating solid, and the content of described film-forming components is 17-100 weight %.
7. fluororesin single face varnished cloth as claimed in claim 1 or 2 is characterized in that the heterocyclic polyamide acid imide has following structure described in the described film-forming components:
Wherein, R is phenyl, naphthyl, diphenyl ether, benzophenone, biphenyl, 2,2-diphenyl Hexafluoro acetone; N is 10-1000.
8. fluororesin single face varnished cloth as claimed in claim 7 is characterized in that n is 50-500.
9. fluororesin single face varnished cloth as claimed in claim 1 or 2 is characterized in that described polyamidoimide has following general formula:
Wherein, n is 10-1000.
10. fluororesin single face varnished cloth as claimed in claim 9 is characterized in that n is 50-500.
11. a fluororesin single face varnished cloth, it comprises:
(1) varnished cloth substrate;
(2) place one or more layers fluororesin layer on two first type surfaces of this substrate respectively;
(3) but one or more layers adhesive coating layer on one or more layers described fluororesin layer of a first type surface of described coated substrates, but the film-forming components of described adhesive coating layer is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid.
12. fluororesin single face varnished cloth as claimed in claim 11, but it is characterized in that to add fluororesin in the described adhesion coating; But the fluororesin of fluororesin in the described adding adhesive coating layer and/or formation fluororesin layer comprises polytetrafluoroethylene (PTFE), tetrafluoroethylene/hexafluoropropylene copolymer, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer, polytrifluorochloroethylene, hexafluoropropene/tetrafluoroethylene/vinylidene fluoride copolymers, and two or more mixture.
13. as claim 11 or 12 described fluororesin single face varnished cloths, also contain the filler that accounts for coating solid constituent 0-75 weight % but it is characterized in that forming in the coating of described adhesive coating layer, described filler is selected from mica, titanium dioxide, pearl essence, glass powder, bead, Hollow Glass Sphere, stainless steel powder, aluminium powder chrome green powder, blanc fixe, aramid fiber powder, polybenzoate, carbon fiber, ceramic powder, chrome yellow, chrome red, cadmium yellow, cadmium red, molybdate red, barba hispanica, iron oxide black, phthalocyanine, quinacridone, carborundum powder.
14. as claim 11 or 12 described fluororesin single face varnished cloths, also contain the coating additive that accounts for coating solid constituent 0-10 weight % but it is characterized in that forming in the coating of described adhesive coating layer, it is selected from dispersant, anti-heavy agent, emulsifying agent, thickener, defoamer, wetting agent.
15. as claim 11 or 12 described fluororesin single face varnished cloths, it is characterized in that described varnished cloth substrate is selected from woven cloths, woven felt, weaves blanket, woven webs, aluminium, copper, nickel or stainless steel, glass, pottery, asbestos, aramid fiber, polyamidoimide, polyimides, polyarylsulfone (PAS), polyether-ether-ketone, polyphenylene sulfide.
16. as claim 11 or 12 described fluororesin single face varnished cloths, it is characterized in that the gross weight by the coating solid, the content of described film-forming components is 17-100 weight %.
17., it is characterized in that the heterocyclic polyamide acid imide has following structure described in the described film-forming components as claim 11 or 12 described fluororesin single face varnished cloths:
Wherein, R is phenyl, naphthyl, diphenyl ether, benzophenone, biphenyl, 2,2-diphenyl Hexafluoro acetone; N is 10-1000.
18. fluororesin single face varnished cloth as claimed in claim 17 is characterized in that n is 50-500.
19., it is characterized in that described polyamidoimide has following general formula as claim 11 or 12 described fluororesin single face varnished cloths:
Wherein, n is 10-1000.
20. fluororesin single face varnished cloth as claimed in claim 19 is characterized in that n is 50-500.
21. the manufacture method of a fluororesin single face varnished cloth, it comprises:
(1) at least one first type surface of varnished cloth substrate, but the dipping or apply one or more layers stick coating, but the film-forming components of described stick coating is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid;
(2) but on the described stick coating of a first type surface of described varnished cloth substrate, apply one or more layers fluoro-resin emulsion;
(3) drying obtains the fluoro resin varnished fabric that one side can be glued and one side is antiseized behind baking, the sintering.
22. method as claimed in claim 21, but it is characterized in that described at least one first type surface of varnished cloth substrate the dipping or apply the step of one or more layers stick coating before, it also comprises carries out the surface-treated step to described varnished cloth substrate.
23. method as claimed in claim 21, but it is characterized in that to add fluororesin in the described adhesion coating; But the fluororesin of fluororesin in the described adding adhesive coating layer and/or formation fluororesin layer comprises polytetrafluoroethylene (PTFE), tetrafluoroethylene/hexafluoropropylene copolymer, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer, polytrifluorochloroethylene, hexafluoropropene/tetrafluoroethylene/vinylidene fluoride copolymers, and two or more mixture.
24. as each described method among the claim 21-23, but it is characterized in that also containing in the described stick coating filler that accounts for coating solid constituent 0-75 weight %, described filler is selected from mica, titanium dioxide, pearl essence, glass powder, bead, Hollow Glass Sphere, stainless steel powder, aluminium powder chrome green powder, blanc fixe, aramid fiber powder, polybenzoate, carbon fiber, ceramic powder, chrome yellow, chrome red, cadmium yellow, cadmium red, molybdate red, barba hispanica, iron oxide black, phthalocyanine, quinacridone, carborundum powder.
25. as each described method among the claim 21-23, but it is characterized in that also containing in the described stick coating coating additive that accounts for coating solid constituent 0-10 weight %, it is selected from dispersant, anti-heavy agent, emulsifying agent, thickener, defoamer, wetting agent.
26. as each described method among the claim 21-23, it is characterized in that described varnished cloth substrate is selected from woven cloths, woven felt, weaves blanket, woven webs, aluminium, copper, nickel or stainless steel, glass, pottery, asbestos, aramid fiber, polyamidoimide, polyimides, polyarylsulfone (PAS), polyether-ether-ketone, polyphenylene sulfide.
27. as each described method among the claim 21-23, it is characterized in that the gross weight by the coating solid, the content of described film-forming components is 17-100 weight %.
28., it is characterized in that the heterocyclic polyamide acid imide has following structure described in the described film-forming components as each described method among the claim 21-23:
Wherein, R is phenyl, naphthyl, diphenyl ether, benzophenone, biphenyl, 2,2-diphenyl Hexafluoro acetone; N is 10-1000.
29. fluororesin single face varnished cloth as claimed in claim 28 is characterized in that n is 50-500.
30., it is characterized in that described polyamidoimide has following general formula as each described method among the claim 21-23:
Wherein, n is 10-1000.
31. method as claimed in claim 30 is characterized in that n is 50-500.
32. the manufacture method of a fluororesin single face varnished cloth, it comprises:
(1) dipping or one or more layers fluoro-resin emulsion of dual coating on the varnished cloth substrate;
(2) but on a first type surface of described coated substrates, apply one or more layers stick coating, but the film-forming components of described stick coating is selected from heterocyclic polyamide imide resin, polyimide resin, polyphenylene sulfide, polyethersulfone resin, polyether-ether-ketone resin, silicate, phosphate, borate, chromic acid-phosphoric acid, boric acid-chromic acid-phosphoric acid;
(3) drying, baking, sintering obtain the fluoro resin varnished fabric that one side can be glued and one side is antiseized.
33. method as claimed in claim 32, it is characterized in that described on the varnished cloth substrate dipping or one or more layers fluoro-resin emulsion of dual coating before, it also comprises carries out the surface-treated step to described varnished cloth substrate.
34. method as claimed in claim 32, but it is characterized in that to add fluororesin in the described adhesion coating; But the fluororesin of fluororesin in the described adding adhesive coating layer and/or formation fluororesin layer comprises polytetrafluoroethylene (PTFE), tetrafluoroethylene/hexafluoropropylene copolymer, tetrafluoroethylene/perfluoro alkyl vinyl ether co-polymer, polytrifluorochloroethylene, hexafluoropropene/tetrafluoroethylene/vinylidene fluoride copolymers, and two or more mixture.
35. as each described method among the claim 32-34, but it is characterized in that also containing in the described stick coating filler that accounts for coating solid constituent 0-75 weight %, described filler is selected from mica, titanium dioxide, pearl essence, glass powder, bead, Hollow Glass Sphere, stainless steel powder, aluminium powder chrome green powder, blanc fixe, aramid fiber powder, polybenzoate, carbon fiber, ceramic powder, chrome yellow, chrome red, cadmium yellow, cadmium red, molybdate red, barba hispanica, iron oxide black, phthalocyanine, quinacridone, carborundum powder.
36. as each described method among the claim 32-34, but it is characterized in that also containing in the described stick coating coating additive that accounts for coating solid constituent 0-10 weight %, it is selected from dispersant, anti-heavy agent, emulsifying agent, thickener, defoamer, wetting agent.
37. as each described method among the claim 32-34, it is characterized in that described varnished cloth substrate is selected from woven cloths, woven felt, weaves blanket, woven webs, aluminium, copper, nickel or stainless steel, glass, pottery, asbestos, aramid fiber, polyamidoimide, polyimides, polyarylsulfone (PAS), polyether-ether-ketone, polyphenylene sulfide.
38. as each described method among the claim 32-34, it is characterized in that the gross weight by the coating solid, the content of described film-forming components is 17-100 weight %.
39., it is characterized in that the heterocyclic polyamide acid imide has following structure described in the described film-forming components as each described method among the claim 32-34:
Wherein, R is phenyl, naphthyl, diphenyl ether, benzophenone, biphenyl, 2,2-diphenyl Hexafluoro acetone; N is 10-1000.
40. method as claimed in claim 39 is characterized in that n is 50-500.
41., it is characterized in that described polyamidoimide has following general formula as each described method among the claim 32-34:
Wherein, n is 10-1000.
42. method as claimed in claim 41 is characterized in that n is 50-500.
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| CN104389134A (en) * | 2014-11-28 | 2015-03-04 | 沈阳飞机工业（集团）有限公司 | Coating method for aramid fiber |
| CN105524548B (en) * | 2016-01-25 | 2018-05-11 | 深圳市易珑科技有限公司 | A kind of aqueous, environmental protective high-temperature coatings and preparation method thereof |
| CN112351591B (en) * | 2020-11-17 | 2022-05-27 | 中国电子科技集团公司第四十六研究所 | Preparation method of polytetrafluoroethylene-based microwave composite dielectric material substrate with high peeling strength |
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