CN103849312B - Improve lac and the method for modifying thereof of varnish thermotolerance - Google Patents
Improve lac and the method for modifying thereof of varnish thermotolerance Download PDFInfo
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- CN103849312B CN103849312B CN201210495259.9A CN201210495259A CN103849312B CN 103849312 B CN103849312 B CN 103849312B CN 201210495259 A CN201210495259 A CN 201210495259A CN 103849312 B CN103849312 B CN 103849312B
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- 239000002966 varnish Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 25
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims abstract description 98
- 229920001800 Shellac Polymers 0.000 claims abstract description 61
- 239000004208 shellac Substances 0.000 claims abstract description 61
- 229940113147 shellac Drugs 0.000 claims abstract description 61
- 235000013874 shellac Nutrition 0.000 claims abstract description 61
- 230000004048 modification Effects 0.000 claims abstract description 40
- 238000012986 modification Methods 0.000 claims abstract description 40
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 21
- 239000008158 vegetable oil Substances 0.000 claims abstract description 21
- 229940059574 pentaerithrityl Drugs 0.000 claims abstract description 19
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000011187 glycerol Nutrition 0.000 claims abstract description 18
- 238000010792 warming Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000002023 wood Substances 0.000 claims description 15
- 239000004922 lacquer Substances 0.000 claims description 14
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 12
- 235000006408 oxalic acid Nutrition 0.000 claims description 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 10
- 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 description 10
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 239000004202 carbamide Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 235000019198 oils Nutrition 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 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 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 23
- 238000010276 construction Methods 0.000 abstract description 6
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- 239000011248 coating agent Substances 0.000 description 34
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- 238000005516 engineering process Methods 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
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- 231100000252 nontoxic Toxicity 0.000 description 5
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- 239000002383 tung oil Substances 0.000 description 5
- DXRKLUVKXMAMOV-UHFFFAOYSA-N 3-heptadecylcatechol Chemical compound CCCCCCCCCCCCCCCCCC1=CC=CC(O)=C1O DXRKLUVKXMAMOV-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
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- 235000013399 edible fruits Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 3
- 239000011976 maleic acid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000013268 sustained release Methods 0.000 description 3
- 239000012730 sustained-release form Substances 0.000 description 3
- 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
- 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
- 241000607479 Yersinia pestis Species 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZRIHAIZYIMGOAB-UHFFFAOYSA-N butabarbital Chemical compound CCC(C)C1(CC)C(=O)NC(=O)NC1=O ZRIHAIZYIMGOAB-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 230000032050 esterification Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- -1 machinery Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 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
- 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
- 244000073231 Larrea tridentata Species 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 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
- 150000007942 carboxylates Chemical class 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 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
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- LDCRTTXIJACKKU-ONEGZZNKSA-N dimethyl fumarate Chemical compound COC(=O)\C=C\C(=O)OC LDCRTTXIJACKKU-ONEGZZNKSA-N 0.000 description 1
- 229960004419 dimethyl fumarate Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000004495 emulsifiable concentrate Substances 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 238000013332 literature search Methods 0.000 description 1
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- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
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- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
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Landscapes
- Paints Or Removers (AREA)
Abstract
The embodiment of the invention discloses a kind of lac of improving varnish thermotolerance, as follows according to the content of weight percent major ingredient: lac 40-50%; Dry vegetable oil 3-7%; Glycerine 5-9%; Gum Rosin 10-20%; Tetramethylolmethane 5-10%; Modification promotor 10-15%, the embodiment of the invention also discloses a kind of lac method of modifying improving varnish thermotolerance, comprise the steps: lac, Gum Rosin to stir and be dissolved in thinner, then get modification promotor to add in solution and heating until all dissolve, Heating temperature is 50-80 DEG C; In above-mentioned mixing solutions, add dry vegetable oil, tetramethylolmethane and glycerine, warming while stirring is to 40-82 DEG C, and reaction 1-4 hour, obtains the shellac solution of modification; The shellac solution of modification is made shellac varnish finished product, adopt the present invention, make the dry heat resistance performance of lac paint film and wet-hot aging performance have further significantly improve and construction and use procedure in environment and body harmless.
Description
Technical field
The present invention relates to a kind of lac, particularly relate to a kind of lac and the method for modifying thereof that improve varnish thermotolerance.
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 GBT4893.3-2005 " furniture surface dry heat resistance assay method ", GB/T4893.2-2005 " 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 by chemical reaction the physical and mechanical properties that crosslinking structure improves lac, add into sustained release dosage, inorganic salt and the method being prepared by environmentally friendly thinner to 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, dip treating 4-300 hour is carried out under putting into airtight Glass Containers what 10 DEG C of-80 DEG C of temperature after being mixed with hydrogen peroxide liquid by lacquer powder, 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
Embodiment of the present invention technical problem to be solved is, provides a kind of lac of improving varnish thermotolerance,
As follows according to the content of weight percent major ingredient: lac 40-50%; Dry vegetable oil 3-7%; Glycerine 5-9%; Gum Rosin 10-20%; Tetramethylolmethane 5-10%; Modification promotor 10-15%.
Wherein, described modification promotor is the one in morpholine, urea, thiocarbamide, borax, dicarboxylic acid or dicarboxylic anhydride.
Described lac is white shellac, refining refined bleached lac, dewaxing lac or hot ethanol insolubles be less than 1% sheet or grain lac in one.
Described Gum Rosin is mainly the one in gum resin, staybelite, modified rosin, nilox resin, polymerized rosin.
Described dry vegetable oil is the one through heating in Viscotrol C, oleum lini or the boiled wood oil boiled.
In order to solve the problems of the technologies described above, embodiments provide a kind of method of modifying improving the lac of varnish thermotolerance, comprising the steps:
(a), lac, Gum Rosin are stirred and are dissolved in thinner, then get modification promotor to add in solution and heating until all dissolve, Heating temperature is 50-80 DEG C;
(b), in above-mentioned mixing solutions, add dry vegetable oil, tetramethylolmethane and glycerine, warming while stirring to 40-82 DEG C, reaction 1-4 hour, obtain the shellac solution of modification;
(c), the shellac solution of modification is made shellac varnish finished product.
Wherein, the method making shellac varnish in described step c is: when modified shellac solution is cooled to 30-56 DEG C, adds obtaining property of the oxalic acid shellac varnish finished product of 0.1-5%.
The method making shellac varnish in described step c is: cold for modified shellac solution distillating recovering solvent is obtained modified shellac solid, obtains modified shellac through compressing tablet or granulation, is diluted to the modified shellac varnish of 6-51% during use with thinner.
The method making shellac varnish in described step c is: the weighting agent and the pigment that modified shellac solution are added solution weight 0.1-10% stir 1-2 hour, make environment-friendly modified lacquer.
Described weighting agent is the one in barium sulfate, calcium carbonate, titanium dioxide or carbon black
Implement the embodiment of the present invention, there is following beneficial effect:
Basic Mechanism of the present invention is multi-functional filmogen dry vegetable oil, rosin, tetramethylolmethane is miscible in laccol solution, hydroxyl generation esterification in 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, dry vegetable oil, rosin, the toughness that the plastification of 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 are had significantly improve further.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below will the present invention is described in further detail by embodiment.
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 are 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 hot temperature degree 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 hot temperature degree 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 are 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 hot temperature degree 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 hot temperature degree 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 are 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 hot temperature degree 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 hot temperature degree 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 are 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 hot temperature degree 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 hot temperature degree 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 hot temperature degree 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 hot temperature degree 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 are 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 hot temperature degree 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 hot temperature degree 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 are to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, when being cooled to 30-56 DEG C, add the modified shellac varnish finished product that 0.1 ~ 5% oxalic acid obtains; 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 hot temperature degree 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 hot temperature degree 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 are to 40 ~ 82 DEG C, get modification promotor morpholine 5 grams and add heating in solution until all dissolve, when being cooled to 30-56 DEG C, add the modified shellac solution that 0.1 ~ 5% oxalic acid obtains; 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 hot temperature degree 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 hot temperature degree is 65 DEG C.
Above disclosedly be only a kind of preferred embodiment of the present invention, the interest field of the present invention can not be limited with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. improve a lac for varnish thermotolerance, it is characterized in that, as follows according to the content of weight percent major ingredient: lac 40-50%; Dry vegetable oil 3-7%; Glycerine 5-9%; Gum Rosin 10-20%; Tetramethylolmethane 5-10%; Modification promotor 10-15%,
Lac method of modifying, comprises the steps:
(a), lac, Gum Rosin are stirred and are dissolved in thinner, then get modification promotor to add in solution and heating until all dissolve, Heating temperature is 50-80 DEG C;
(b), in above-mentioned mixing solutions, add dry vegetable oil, tetramethylolmethane and glycerine, warming while stirring to 40-82 DEG C, reaction 1-4 hour, obtain the shellac solution of modification;
(c), the shellac solution of modification is made shellac varnish finished product.
2. a kind of lac of improving varnish thermotolerance according to claim 1, is characterized in that, described modification promotor is the one in morpholine, urea, thiocarbamide, borax, dicarboxylic acid or dicarboxylic anhydride.
3. a kind of lac of improving varnish thermotolerance according to claim 1, is characterized in that, described lac is white shellac, refining refined bleached lac, dewaxing lac or hot ethanol insolubles be less than 1% sheet or grain lac in one.
4. a kind of lac of improving varnish thermotolerance according to claim 1, is characterized in that, described Gum Rosin is the one in gum resin, staybelite, polymerized rosin.
5. a kind of lac of improving varnish thermotolerance according to claim 1, is characterized in that, described dry vegetable oil is the one through heating in Viscotrol C, oleum lini or the boiled wood oil boiled.
6. a kind of lac method of modifying improving varnish thermotolerance according to any one of claim 1-5, is characterized in that, comprise the steps:
(a), lac, Gum Rosin are stirred and are dissolved in thinner, then get modification promotor to add in solution and heating until all dissolve, Heating temperature is 50-80 DEG C;
(b), in above-mentioned mixing solutions, add dry vegetable oil, tetramethylolmethane and glycerine, warming while stirring to 40-82 DEG C, reaction 1-4 hour, obtain the shellac solution of modification;
(c), the shellac solution of modification is made shellac varnish finished product.
7. a kind of lac method of modifying improving varnish thermotolerance according to claim 6, it is characterized in that, the method making shellac varnish in described (c) step is: when modified shellac solution is cooled to 30-56 DEG C, and the oxalic acid adding weight percent 0.1-5% obtains modified shellac varnish finished product.
8. a kind of lac method of modifying improving varnish thermotolerance according to claim 6, it is characterized in that, the method making shellac varnish in described (c) step is: cold for modified shellac solution distillating recovering solvent is obtained modified shellac solid, obtain modified shellac through compressing tablet or granulation, during use, be diluted to the modified shellac varnish of 6-51% with thinner.
9. a kind of lac method of modifying improving varnish thermotolerance according to claim 6, it is characterized in that, the method making shellac varnish in described (c) step is: the weighting agent and the pigment that modified shellac solution are added solution weight 0.1-10% stir 1-2 hour, make environment-friendly modified lacquer.
10. a kind of lac method of modifying improving varnish thermotolerance according to claim 9, it is characterized in that, described weighting agent is the one in barium sulfate, calcium carbonate, titanium dioxide or carbon black.
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| CN104893576A (en) * | 2015-06-10 | 2015-09-09 | 中国林业科学研究院资源昆虫研究所 | Shellac varnish containing biological insect-resist agent azadirachtin and preparation method of shellac varnish |
| IT201600076550A1 (en) | 2016-07-21 | 2018-01-21 | Dumax Srl | COMPOSITION OF PAINTS FOR GRAPHIC ARTS FORMULATED WITH SUBSTANCES USED IN THE FOOD INDUSTRY |
| CN108467678A (en) * | 2018-03-16 | 2018-08-31 | 铜陵学院 | A kind of coating for Chinese zither panel |
| CN114790365B (en) * | 2021-01-26 | 2023-01-31 | 五峰赤诚生物科技股份有限公司 | Tannin/furfural-shellac resin anticorrosive paint and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240939A (en) * | 1979-02-21 | 1980-12-23 | Sam Kostic | Wood finishing composition |
| CN1339548A (en) * | 2000-08-25 | 2002-03-13 | 韩京生 | Process for producing shellac paint |
| CN101643626A (en) * | 2008-08-04 | 2010-02-10 | 北京科技桥科贸有限公司 | Shellac varnish |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240939A (en) * | 1979-02-21 | 1980-12-23 | Sam Kostic | Wood finishing composition |
| CN1339548A (en) * | 2000-08-25 | 2002-03-13 | 韩京生 | Process for producing shellac paint |
| CN101643626A (en) * | 2008-08-04 | 2010-02-10 | 北京科技桥科贸有限公司 | Shellac varnish |
Non-Patent Citations (1)
| Title |
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| 紫胶的特性及应用;黄喜坚等;《杭州化工》;20090331(第1期);第11-15页 * |
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