CN103382308B - Lac modification method for improving heat resistance of lac varnish - Google Patents
Lac modification method for improving heat resistance of lac varnish Download PDFInfo
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- 239000002966 varnish Substances 0.000 title claims abstract description 89
- 238000002715 modification method Methods 0.000 title abstract 3
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- 239000011248 coating agent Substances 0.000 claims abstract description 48
- 238000000576 coating method Methods 0.000 claims abstract description 47
- 230000004048 modification Effects 0.000 claims abstract description 40
- 238000012986 modification Methods 0.000 claims abstract description 40
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 235000011187 glycerol Nutrition 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 17
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- 238000010792 warming Methods 0.000 claims description 19
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- 239000004922 lacquer Substances 0.000 claims description 14
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- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
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- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
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- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 abstract description 2
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- DXRKLUVKXMAMOV-UHFFFAOYSA-N 3-heptadecylcatechol Chemical compound CCCCCCCCCCCCCCCCCC1=CC=CC(O)=C1O DXRKLUVKXMAMOV-UHFFFAOYSA-N 0.000 description 8
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 150000001298 alcohols Chemical class 0.000 description 2
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WHRZCXAVMTUTDD-UHFFFAOYSA-N 1h-furo[2,3-d]pyrimidin-2-one Chemical compound N1C(=O)N=C2OC=CC2=C1 WHRZCXAVMTUTDD-UHFFFAOYSA-N 0.000 description 1
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241001516928 Kerria lacca Species 0.000 description 1
- 235000006173 Larrea tridentata Nutrition 0.000 description 1
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- 229910000861 Mg alloy Inorganic materials 0.000 description 1
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- 229920000180 alkyd Polymers 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 229940120693 copper naphthenate Drugs 0.000 description 1
- SEVNKWFHTNVOLD-UHFFFAOYSA-L copper;3-(4-ethylcyclohexyl)propanoate;3-(3-ethylcyclopentyl)propanoate Chemical compound [Cu+2].CCC1CCC(CCC([O-])=O)C1.CCC1CCC(CCC([O-])=O)CC1 SEVNKWFHTNVOLD-UHFFFAOYSA-L 0.000 description 1
- 229960002126 creosote Drugs 0.000 description 1
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- LDCRTTXIJACKKU-ONEGZZNKSA-N dimethyl fumarate Chemical compound COC(=O)\C=C\C(=O)OC LDCRTTXIJACKKU-ONEGZZNKSA-N 0.000 description 1
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Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a lac modification method for improving heat resistance of lac varnish, and belongs to the technical field of environmentally-friendly coating materials. Dry plant oil, glycerin, rosin resin, pentaerythritol and a modification promoter modify lac for varnish in an alcohol dissolution state of lac so that toughness and heat resistance of lac varnish are greatly improved. The modified lac varnish can be dried naturally in air and can be used as stoving varnish. Through baking at a temperature of 56-110 DEG C for 2-6h, heat (wet heat and dry heat) resistance of a lac varnish film is further improved. A basic mechanism of the lac modification method comprises that multifunctional film forming substances such as dry plant oil, rosin and pentaerythritol are mix-dissolved in a lac alcohol solution; hydroxyl of carboxyl ethanol in lac undergoes an esterification reaction; and plastification produced by dry plant oil, rosin and pentaerythritol, and chemical or physical crosslinking promotion produced by the modification promoter improve lac varnish film toughness and further greatly improve dry heat and wet heat resistance of the lac varnish film.
Description
Technical field
The invention belongs to environment-protection coating material technical field, a kind of lac method of modifying improving shellac varnish thermotolerance is particularly provided.
Background technology
The feature of environmental protection of coating is a major subjects of wood lacquer industry.The surface protection major requirement material of timber provides good mechanical property, aesthetic property and weather etc.Woodwork coating is mainly used in Furniture manufacture and interior decoration.Wherein, furniture manufacturing industry holds the balance to woodwork coating industry.And in furniture manufacturing industry, outlet furniture is the engine of promotion industry.The market requirement is powerful.Meanwhile, Domestic Environment has the development being beneficial to environment protecting paint for wooden articles.On June 1st, 2010, " in the indoor decorating and refurnishing materials solvent wood coatings limits of harmful substances " national standard being drafted formulation by national coating and Pigments Standardization Technical Committee is formally implemented.Along with the strict enforcement of this standard, the market outlook of environment friendly wood coatings are very wide.
Lac (Shellac, also known as shellac) is by the oozy a kind of natural resin of tachardia lacca, have nontoxic, electrical insulation capability good, binding property and thermoplastic strong; The characteristics such as waterproof, protection against the tide, antirust, corrosion resistant, be widely used in military affairs, electrically, coating, paint, machinery, rubber, plastics, process hides, papermaking, medicine, in the industry such as food.Shellac varnish dissolves brown translucent or light yellow clear liquid in ethanol by shellac, white shellac (popular name shellac) or refined bleached lac.Dry rapidly after brushing, formed and there is excellent hardness and electrical insulating property protective film, and the color and luster of light can be showed through polishing grinding.Be mainly used in brushing woodenware and electrical apparatus insulation material.Shellac varnish uses the history of existing more than one thousand years as a kind of traditional wood lacquer, and its consumption reaches peak in the eighties in last century.Because traditional shellac varnish film quality is more crisp, thermotolerance and weather resistance are also poor compared with synthetic coating, unsuitable external application.Along with the appearance of synthetic coating, the feature of shellac varnish poor heat resistance makes the application of shellac varnish decline by containing to turn.Along with the raising of people's living standard, concern for the environment and own health, uphold nature has become a kind of fashion.Synthetic coating to the hazardness of environmental protection and health progressively be familiar with by people.Lac base wood lacquer except there is excellent use properties, also impart that lac product is natural, environmental protection, healthy excellent attribute.The development of thermotolerance to the application of shellac varnish product and lac base environment protecting paint for wooden articles industry how improving shellac varnish has very important meaning.The present invention utilize dry vegetable oil, glycerine, Gum Rosin, tetramethylolmethane under the molten state of laccol in addition modification promotor with lac, modification is carried out to varnish and the toughness of shellac varnish and thermotolerance is largely increased.Press GBT 4893.3-2005 " furniture surface dry heat resistance assay method ", GB/T 4893.2-2005 " furniture surface wet-heat resisting assay method " through quality product research institute of Yunnan Province to detect, compared with the varnish that the varnish that the modified shellac utilizing the present invention to produce makes and common lac make, dry heat resistance performance improves 12-25%, and wet-hot aging performance improves 10-28%.
The research and development of lac modification technology are focuses of current lac application technical research.Through having the close patent that existing literature search finds: 1) patent of invention number: CN100415840C, denomination of invention: the method for environment friendly coated layer material is prepared in a kind of lac modification.Object is to provide a kind of method that environment friendly coated layer material is prepared in lac modification, namely form crosslinking structure by chemical reaction and improve the physical and mechanical properties of lac, add sustained release dosage, inorganic salt and prepared by environmentally friendly thinner to the method for environment friendly coated layer material.And make material in construction and use procedure to environment and body harmless.The multiple carboxyl reaction that the Basic Mechanism of this invention is in multi-functional organic amine and lac forms the object that amido linkage reaches crosslinked.The object that the mechanical property that the formation of cross-linked structure improves lac reaches material protection improves simultaneously and stops extraneous factor to the erosional competency of metallic surface; Amido linkage can improve lac and interface cohesive force and to metallic substance resistance to corrosion, add thinner and inorganic salt etc. and the Corrosion Protection of modified shellac had significantly improve further.Aggregation, the aggregation of this invention add inorganic salt face with sustained release dosage or aggregation with sustained release dosage and mix, and obtain the coated material of different components, are applied to timber, copper and the non-ferrous metal surface such as alloy, aluminum magnesium alloy and have good protection preservative effect.This material can solid or solution state store, stable performance.The coating prepared by this material for thinner, belongs to environment friendly coated layer material with non-benzene homologues solvent.But to how not related to by the thermotolerance of adding softening agent and modification promotor raising shellac varnish; 2) number of patent application: 200810117661.7 denominations of invention: shellac varnish; The invention provides the shellac varnish that a kind of preparation method is simple, nontoxic pollution-free, result of use are good.For reaching above-mentioned technical requirements, shellac varnish involved in the present invention adopts following technical scheme: main raw material composition of the present invention comprises: shellac, solvent etc.Technology described by this patent is make shellac varnish in ethanol shellac being dissolved in 95%, belongs to typical shellac varnish traditional manufacturing technique, poor heat resistance; 3) number of patent application: 00123626.1 denomination of invention: a kind of production method of lacquer, invention relates to a kind of production method of lacquer, natural shellac varnish is milled into 50-200 object powder, put into airtight Glass Containers after being mixed with hydrogen peroxide liquid by lacquer powder and carry out dip treating 4-300 hour at 10 DEG C of-80 DEG C of temperature, every 10 grams of lacquer powder mixtures 10 milliliters of-100 milliliters of hydrogen peroxide liquid, dry the lacquer taking-up after dip treating and namely can be made into red lacquer, look lacquer or colourless lacquer.To how but not related to by the thermotolerance of modification technology raising shellac varnish, 4) number of patent application: 01112705.8 denomination of invention: printing paint for protecting wooden articles, a kind of printing paint for protecting wooden articles, comprise protective liquid and bottom closing paint, protective liquid is by ethanol, phosphorothionate, dimethyl fumarate, Sorbic Acid, creosote and lac bar mix and blend composition, bottom closing paint is by medium-oil-length Semen Lini oil modified alkyd resin, No. 200 industrial napthas, dimethylbenzene, zinc naphthenate, cobalt naphthenate, copper naphthenate and pyrethroid emulsifiable concentrate mix and blend composition, by protective liquid brushing in wood substrates, protective liquid can play the effect of pest control and anticorrosion, then by bottom closing paint brushing on timber, composition each in protective liquid can be closed in wood by bottom closing paint, keep the effect of pest control and anticorrosion.To how but not related to by the thermotolerance of modification technology raising shellac varnish; 5) number of patent application: 201110197401.7 denominations of invention: a kind of aqueous bottom coating for wood products.Invention provides a kind of aqueous bottom coating for wood products, the weight percent of each component of its constitutive material is: potter's clay powder 6.134-7.535%, calcium carbonate 14.45-17.45%, shellac 0.416-0.498%, animal skin glue 4.156-4.956%, pure water 65.391-71.261%, alcohol 1.495-1.695%, sticky rice flour 2.078-2.478%.Aqueous bottom coating for wood products of the present invention has contamination-free, has no irritating odor, nontoxic, the formaldehyde hidden danger avoided in common coating, and flatness is high, and construction easily; adhesivity is strong, and flame retardant resistance is high, and coating hardness height easily forms protective layer; there is quick-drying, the feature of not after-tacking simultaneously.To how but not related to by the thermotolerance of modification technology raising shellac varnish; 6) number of patent application: 201110197398.9 denominations of invention: a kind of aqueous surface coating for wood products.Invention provides a kind of aqueous surface coating for wood products, and the weight percent of each component of its constitutive material is: potter's clay powder 24.286-29.286%, shellac 0.813-0.973%, animal skin glue 5.452-6.452%, water 56.524-62.524%, alcohol 1.388-1.588%, starch 4.857-5.857%.Aqueous surface coating for wood products of the present invention has contamination-free, has no irritating odor, nontoxic, the formaldehyde hidden danger avoided in common coating, and flatness is high, and construction easily; adhesivity is strong, and flame retardant resistance is high, and coating hardness height easily forms protective layer; there is quick-drying, the feature of not after-tacking simultaneously.To how but not related to by the thermotolerance of modification technology raising shellac varnish; 7) number of patent application: 201110197399.3 denominations of invention: a kind of wood-product aqueous crack coating material.Invention provides a kind of wood-product aqueous crack coating material, and the weight percent of each component of its constitutive material is: flatting silica 7.139-9.439%, shellac 1.910-2.310%, alcohol 79.388-86.388%, sticky rice flour 4.46-5.56%.Wood-product aqueous crack coating material of the present invention has contamination-free, has no irritating odor, nontoxic, the formaldehyde hidden danger avoided in common coating, and plasticity-is high, and construction easily, has quick-drying, environmental protection simultaneously, harmless in construction.To how but not related to by the thermotolerance of modification technology raising shellac varnish; 8) number of patent application: 201010039147.3 denominations of invention: modified shellac fruit coating agent of anti-hickie and preparation method thereof.Invention provides modified shellac fruit coating agent of a kind of anti-hickie and preparation method thereof.Be made up of the component of following masses part: modified shellac resin 10 ~ 25 parts, mass concentration is the solvent 75 ~ 90 parts of 8 ~ 13%; Preparation method is: be first mixed in sclerolac by basic group polymkeric substance, then adds in solvent by mixture, and heated and stirred is to dissolving completely; The amount of 0.1 ~ 2 times of fumaric acid siccative oil by sclerolac quality is joined in above-mentioned gained mixture, obtains modified shellac resin; The solvent being 8 ~ 13% by modified shellac resin and mass concentration mixes by above-mentioned mass parts, and adjust ph to 7 ~ 9 obtain the modified shellac fruit coating agent of anti-hickie.This invention adopts the polymkeric substance and the drying oil-modified lac of fumaric acidization that contain basic group, closes lac carboxyl and hydroxyl, makes it to lose chance esterification occurring and produces cross linkage, thus avoids rete to occur hickie under high temperature, high humidity environment.Lac method of modifying and the present invention of this invention have essence different, and to how but not related to by the thermotolerance of modification technology raising shellac varnish.
Summary of the invention
The object of the invention is to: a kind of lac method of modifying improving shellac varnish thermotolerance is provided, namely utilize dry vegetable oil, glycerine, Gum Rosin, tetramethylolmethane under the molten state of laccol in addition modification promotor with lac, modification is carried out to varnish and the toughness of shellac varnish and thermotolerance is largely increased.This material construction and use procedure in environment and body harmless.
Lac of the present invention comprises starting material and the rough-wrought product thereof of lac, white shellac (the white shellac of popular name), refining refined bleached lac etc.
The present invention utilize dry vegetable oil, glycerine, Gum Rosin, tetramethylolmethane under the molten state of laccol in addition modification promotor modification is carried out to improve toughness and the thermotolerance of shellac varnish with lac to varnish, concrete steps are as follows: be dissolved in thinner by lac, Gum Rosin under 1, stirring, get the modification promotor being equivalent to lac weight 1 ~ 10 % by weight and add heating in solution until all dissolve, Heating temperature is 50 ~ 80 DEG C, obtains the shellac solution of 10 ~ 50 % by weight; Described thinner comprises: alcohols or ketone; Alcohols is ethanol, and ketone is acetone; Described modification promotor comprises: morpholine or urea or thiocarbamide or borax or dicarboxylic acid or dicarboxylic anhydride.
Lac is sheet or the grain lac that white shellac or refining refined bleached lac or dewaxing lac or hot ethanol insolubles are less than 1%.Described Gum Rosin comprises: gum resin or staybelite or modified rosin or the alcohol such as nilox resin or polymerized rosin dissolubility Gum Rosin.
2, in above-mentioned shellac solution, add dry vegetable oil, tetramethylolmethane, glycerine, warming while stirring, to 40 ~ 82 DEG C, is reacted 1 ~ 4 hour, is obtained modified shellac solution, adds the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains when being cooled to 30-56 DEG C; Or distillating recovering solvent obtains modified shellac solid, use by making shellac varnish after user's dissolution with solvents.Described dry vegetable oil is through heating the Viscotrol C or oleum lini or boiled wood oil that boil.
3, modified shellac solution distillating recovering solvent is obtained modified shellac solid, obtain finished product modified shellac through compressing tablet or granulation.Use thinner (stir if desired and be heated to 40-60 DEG C) to be diluted to the modified shellac solution of 6 ~ 51% before use, directly use as modified shellac varnish.Also can after paint film seasoning at 60-110 DEG C dry 2-6 hour toast.Coating full color after baking, beautiful, have higher hardness of paint film, good wear resisting property makes the toughness of shellac varnish and thermotolerance be largely increased simultaneously, forms the protective coating of excellent combination property.
4, stirring lower concentration is add the weighting agent that is equivalent to lac weight 0.1 ~ 10 % by weight and pigment stirring 1 ~ 2 hour in the modified shellac solution of 10 ~ 50 quality %; Directly use as environment-friendly modified lacquer.Described weighting agent is barium sulfate or calcium carbonate or titanium dioxide or carbon black.
The application of coated material:
1) the modified shellac solution being 6-51% using the solution described in 2,3 or 4 or the lower configuration concentration of solid material thinner stirring is directly coated on smooth wood surface (roughness is less than 5) by the method brushed or spray and is coated with as primary coat or face.Lower 15 minutes of this coating room temperature can surface drying, 12 hours substantially dries.This paint film has good toughness, and the toughness of shellac varnish and thermotolerance are improved, and can the surface of available protecting wood materials.
2) the modified shellac solution being 6-51% using the solution described in 2,3 or 4 or the lower configuration concentration of solid material thinner stirring is directly coated in wood floor surface as finish paint by the method brushed or spray.Lower 15 minutes of this coating room temperature can surface drying, and 24 hours complete dryinies, after drying, at 60-110 DEG C, dry 2-6 hour toasts.Coating full color after baking, beautiful, have higher hardness of paint film, good wear resisting property makes the toughness of shellac varnish and thermotolerance be largely increased simultaneously, forms the protective coating of excellent combination property.
3) this coated material does not discharge the volatile organic matter that country prohibites after constructing, deposit and using, and is environment friendly coated layer material.
Basic Mechanism of the present invention is that multi-functional filmogen dry vegetable oil, rosin, tetramethylolmethane are miscible in laccol solution, and the hydroxyl generation esterification in the carboxyl ethanol in lac obtains carboxylate.Adding the properties-correcting agent glycerine that improves lac toughness and modification promotor makes the multiple carboxyl reaction in lac molecule form interaction force between group.Modification promotor plays the crosslinked effect impelling chemistry or physics.The toughness that the plastification of dry vegetable oil, rosin, tetramethylolmethane and the formation of cross-linked structure improve lac paint film improves the temperature capacity of lac paint film simultaneously, the dry heat resistance performance of lac paint film and wet-hot aging performance is had and significantly improves further.
application example
example 1. be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of gum resin under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Dry heat resistance temperature is 84 DEG C, and wet-heat resisting temperature is 76 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 2. 20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Dry heat resistance temperature is 87 DEG C, and wet-heat resisting temperature is 75 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 3. 20 grams of lacs, 6 grams of maleic acid modified rosin pentaerythritol resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil tung oil 2 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Dry heat resistance temperature is 90 DEG C, and wet-heat resisting temperature is 78 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 4. be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of maleic acid modified Gum Rosins under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 92 DEG C, and wet-heat resisting temperature is 83 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 5. 20 grams of lacs, 6 grams of nilox resin resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 93 DEG C, and wet-heat resisting temperature is 84 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 6. 20 grams of lacs, 6 grams of maleic acid modified rosin pentaerythritol resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil tung oil 2 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 95 DEG C, and wet-heat resisting temperature is 84 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 7. be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of gum resin under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor thiocarbamide 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns.Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 93 DEG C, and wet-heat resisting temperature is 82 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 8.20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring, to 40 ~ 82 DEG C, is got modification promotor morpholine 5 grams and is added heating in solution until all dissolve, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains when being cooled to 30-56 DEG C; React 1 ~ 4 hour, obtain modified shellac solution, by this liquid directly by being coated on smooth plank, room temperature places 16 hours, obtains the coating that thickness is 2 microns.Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 95 DEG C, and wet-heat resisting temperature is 85 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
example 9.20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve.Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring, to 40 ~ 82 DEG C, is got modification promotor morpholine 5 grams and is added heating in solution until all dissolve, add the modified shellac solution that 0.1 ~ 5% oxalic acid obtains when being cooled to 30-56 DEG C; Stir and add the weighting agent light calcium carbonate that is equivalent to lac 3% and 2% charcoal blacks stirs 2 hours; Directly use as environment-friendly modified lacquer.Put into 110 DEG C of baking oven bakings 2 hours after paint film natural air drying, dry heat resistance temperature is 91 DEG C, and wet-heat resisting temperature is 83 DEG C.The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
Claims (9)
1. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of gum resin under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Dry heat resistance temperature is 84 DEG C, and wet-heat resisting temperature is 76 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
2. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Dry heat resistance temperature is 87 DEG C, and wet-heat resisting temperature is 75 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
3. one kind is improved the lac method of modifying of shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of maleic acid modified rosin pentaerythritol resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Dry heat resistance temperature is 90 DEG C, and wet-heat resisting temperature is 78 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
4. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of maleic acid modified Gum Rosins under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 92 DEG C, and wet-heat resisting temperature is 83 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
5. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of nilox resin resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 93 DEG C, and wet-heat resisting temperature is 84 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
6. one kind is improved the lac method of modifying of shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of maleic acid modified rosin pentaerythritol resins are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get 5 grams, modification promotor urea and add heating in solution until all dissolve, react 1 ~ 4 hour, obtain modified shellac solution, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 95 DEG C, and wet-heat resisting temperature is 84 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
7. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: be dissolved in 100 gram of 95% alcohol by 20 grams of lacs, 6 grams of gum resin under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil tung oil 2 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring is to 40 ~ 82 DEG C, get modification promotor thiocarbamide 5 grams and add heating in solution until all dissolve, react 1 ~ 4 hour, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; By this liquid directly by being coated on smooth plank, room temperature places 24 hours, obtains the coating that thickness is 2 microns; Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 93 DEG C, and wet-heat resisting temperature is 82 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
8. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring, to 40 ~ 82 DEG C, is got modification promotor morpholine 5 grams and is added heating in solution until all dissolve, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains when being cooled to 30-56 DEG C; React 1 ~ 4 hour, obtain modified shellac solution, by this liquid directly by being coated on smooth plank, room temperature places 16 hours, obtains the coating that thickness is 2 microns; Put into 110 DEG C of baking oven bakings 2 hours, dry heat resistance temperature is 95 DEG C, and wet-heat resisting temperature is 85 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
9. improve a lac method of modifying for shellac varnish thermotolerance, it is characterized in that, its step is as follows: 20 grams of lacs, 6 grams of hydrogenated rosin resin are dissolved in 100 grams of thinner 95% alcohol under stirring, Heating temperature is 50 ~ 80 DEG C, until all dissolve; Add dry vegetable oil oleum lini 3 grams, tetramethylolmethane 3 grams, glycerine 3 grams, warming while stirring, to 40 ~ 82 DEG C, is got modification promotor morpholine 5 grams and is added heating in solution until all dissolve, add the modified shellac solution that 0.1 ~ 5% oxalic acid obtains when being cooled to 30-56 DEG C; Stir and add the weighting agent light calcium carbonate that is equivalent to lac 3% and 2% charcoal blacks stirs 2 hours; Directly use as environment-friendly modified lacquer; Put into 110 DEG C of baking oven bakings 2 hours after paint film natural air drying, dry heat resistance temperature is 91 DEG C, and wet-heat resisting temperature is 83 DEG C; The shellac varnish paint film of non-modified on year-on-year basis, dry heat resistance temperature is 75 DEG C, and wet-heat resisting temperature is 65 DEG C.
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| CN106906649A (en) * | 2016-07-01 | 2017-06-30 | 陆海蓉 | Blend fabric crease-resistant no-iron finishing agent |
| CN114790366B (en) * | 2021-01-26 | 2023-01-31 | 五峰赤诚生物科技股份有限公司 | Tannin/eleostearic acid toughened shellac resin anticorrosive paint and preparation method thereof |
| CN112979964B (en) * | 2021-02-22 | 2022-05-31 | 烟台大学 | High-toughness shellac and preparation method thereof |
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|---|---|---|---|---|
| US1560321A (en) * | 1925-04-30 | 1925-11-03 | Riley George Baker | Reenforced glass |
| US4240939A (en) * | 1979-02-21 | 1980-12-23 | Sam Kostic | Wood finishing composition |
| CN1264406A (en) * | 1997-08-01 | 2000-08-23 | 朗开斯特集团有限公司 | Aqueous shellac solution or dispersion |
| CN101747838A (en) * | 2008-12-13 | 2010-06-23 | 林杉 | Preparation method of natural transparent paint |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1560321A (en) * | 1925-04-30 | 1925-11-03 | Riley George Baker | Reenforced glass |
| US4240939A (en) * | 1979-02-21 | 1980-12-23 | Sam Kostic | Wood finishing composition |
| CN1264406A (en) * | 1997-08-01 | 2000-08-23 | 朗开斯特集团有限公司 | Aqueous shellac solution or dispersion |
| CN101747838A (en) * | 2008-12-13 | 2010-06-23 | 林杉 | Preparation method of natural transparent paint |
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