CN102304305A - Persimmon peel extractive, extraction method thereof and formaldehyde-removal coating containing persimmon peel extractive - Google Patents
Persimmon peel extractive, extraction method thereof and formaldehyde-removal coating containing persimmon peel extractive Download PDFInfo
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- CN102304305A CN102304305A CN201110159302XA CN201110159302A CN102304305A CN 102304305 A CN102304305 A CN 102304305A CN 201110159302X A CN201110159302X A CN 201110159302XA CN 201110159302 A CN201110159302 A CN 201110159302A CN 102304305 A CN102304305 A CN 102304305A
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Abstract
The invention relates to the field of fine chemical engineering, in particular to a persimmon peel extractive, an extraction method thereof and a formaldehyde-removal coating containing persimmon peel extractive. The persimmon peel extractive is characterized in that the persimmon peel is dried, smashed and screened to obtain the dry powder of the persimmon peel; and then, the dry powder of the persimmon peel is extracted by acetone to obtain the persimmon peel extractive. The coating comprises the persimmon peel extractive. The coating provided by the invention does not release formaldehyde and has low content of volatile organic compounds (VOC), and the quality conforms to the national standard. Experiments prove that the coating provided by the invention can be used for effectively inhibiting bacteria of which the bacteria inhibition rate is more than 99.99%, and formaldehyde strainaway rate is 93.16-95.97%. The interiro wall latex paint provided by the invention has the strainaway rate for VOC is 68.79-73.17%, wherein the strainaway rate for benzene is 63.14-73.06%, and thus the persimmon peel extractive can effectively and continuously remove formaldehyde in the air and other volatile organic compound airs (VOC).
Description
Technical field
The present invention relates to field of fine chemical, particularly Pericarpium Kaki extract and process for extracting thereof and the methanal paint that removes that contains the Pericarpium Kaki extract.
Background technology
In recent years, along with the raising of Chinese economic development and living standards of the people, people's environmental consciousness and health requirements strengthen day by day, and the hazardous and noxious substances pollution on the environment in the building and ornament materials, the influence that human health is caused also become increasingly conspicuous.Hazardous and noxious substances is mainly derived from pollutents such as formaldehyde that building and ornament materials discharge, ammonia, benzene series thing.Wherein, Formaldehyde is mainly derived from the glued board that is used for indoor ornamentation; Blockboard; Paint in the finishing material such as coating, is a kind of colourless molten irritant gas that is prone to; Hazard ratio to human body is bigger; It can cause eyes, skin and and the hormesis of respiratory tract, cause neural system, immunity system, endocrine system dysfunction, have embryotoxicity, teratogenesis, carcinogenesis simultaneously.Ammonia is a kind of colourless, has the gas of intense stimulus smell, often is adsorbed on a conjunctiva and the skin mucosa, and human body produce is stimulated and inflammation, can corrode and tissue that stimulation contacts, mainly comes from fire retardant in the finishing material, frostproofer, additive etc.
At present, all deep research has been done in the purification of indoor environment both at home and abroad, developed a series of air clearing product, like anion generator, anionic additive, formaldehyde absorption agent etc.But some formaldehyde absorption agents itself are exactly the synthetic chemical, when removing formaldehyde, self can discharge other dusty gas, and contaminate environment works the mischief to HUMAN HEALTH simultaneously.
Persimmon, the Ebenaceae calamander is the large fruit of China, output is big, except that eating raw, how drying one-tenth dried persimmon.In the process of drying one-tenth dried persimmon, produced a large amount of Pericarpium Kakis with persimmon; Research shows, contains a large amount of polyphenols in the Pericarpium Kaki, and polyphenols has the effect of removing odorous gas preferably, removing formaldehyde; Just discarded without utilizing, caused the waste and the environmental pollution of resource.
Summary of the invention
In view of this, the present invention's methanal paint that removes of a kind of Pericarpium Kaki extract and process for extracting thereof being provided and containing the Pericarpium Kaki extract.This Pericarpium Kaki extract through with Pericarpium Kaki through dry, pulverize, sieve, process Pericarpium Kaki dry powder, obtain the Pericarpium Kaki extract with acetone extract again.Pericarpium Kaki extract among the present invention is a natural plant extracts, does not contain artificial chemical, has removing formaldehyde, eliminates stink, and effect such as antibacterial grade can be used as paint additive, and preparation coating.
In order to realize the foregoing invention purpose, the present invention provides following technical scheme:
The invention provides a kind of process for extracting of Pericarpium Kaki extract, comprising:
Step 1: Pericarpium Kaki dry powder is pulverized, sieves, made to Pericarpium Kaki through 60 ℃ of oven dry 10h;
Step 2: in g/mL, in Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution, at 45 ℃ of water-bath lucifuge lixiviate 2h, filters, and obtains first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, obtains the Pericarpium Kaki extract.
The present invention also provides the Pericarpium Kaki that is obtained by said extracted method extract.
The Pericarpium Kaki extract that obtains is carried out routine evaluation, and the result shows, contains the Pericarpium Kaki polyphenol in the Pericarpium Kaki extract, and through process for extracting provided by the invention, the content of Pericarpium Kaki polyphenol in the Pericarpium Kaki extract has had and significantly improves, and is 79.9～95.3%.
Research shows; Contain abundant polyphenols in the Pericarpium Kaki; Pericarpium Kaki polyphenol in the Pericarpium Kaki extract is mainly condensed tannin; Comprise flavanol compound, anthocyan, anthoxanthins, chlorogenic acid etc.; Phenolic hydroxyl group on the catechin wherein has the activity that proton is provided, and very strong reducing power is arranged, and formaldehyde protonated improved the electron deficiency property on the carbonyl carbon; The negative oxygen ion that catechin disassociation generates promptly with methane generation electrophilic addition reaction, its chemical equation is following:
Simultaneously; Pericarpium Kaki extract material has stronger active group-OH; Reactions such as it can neutralize with odorous substance, condensation, combination, bag pod; Therefore the main odorous substance to indoor environment has tangible deodorizing effect, and particularly the deodorizing capability to methylamine, Trimethylamine 99, ammonia, indoles is stronger.In addition, the chlorogenic acid in the Pericarpium Kaki extract material also is that a kind of excellent antibiotic is plain, thereby Pericarpium Kaki extract provided by the invention also has the excellent antibiotic effect.
In view of above-mentioned Pericarpium Kaki extract remove formaldehyde, eliminate odorous gas, characteristic aspect antibacterial, the present invention also provides the Pericarpium Kaki extract to absorb formaldehyde in preparation, eliminate the application in stink or the bacteriostatic paint additive.
The present invention also provides a kind of coating, comprises the Pericarpium Kaki extract, acceptable assistant in emulsion, titanium dioxide, coarse whiting, calcined kaolin, talcum powder and the coating; Pericarpium Kaki dry powder is pulverized, sieves, made to said Pericarpium Kaki extract through 60 ℃ of oven dry 10h,, in g/mL by Pericarpium Kaki; In Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution; At 45 ℃ of water-bath lucifuge lixiviate 2h, filter, obtain first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, makes.
As preferably, coating provided by the invention by weight percentage, contains Pericarpium Kaki extract 1～3%.
As preferably, acceptable assistant comprises one or more the mixture in thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid, terepthaloyl moietie, sanitas, the mould inhibitor in the said coating.
As preferably, said coating is water soluble paint.
Preferably; Coating provided by the invention; By weight percentage; Comprise: Pericarpium Kaki extract 1～3%; Acrylate and vinyl acetate emulsion or benzene emulsion 23.5～44%, Natvosol thickening material 0.3～0.9%, AMP-95 multifunctional assistant 0.05～0.15%; Wetting dispersing agent 0.3～0.6%; Defoamer 0.2～0.4%, film coalescence aid 0.8～1.5%, terepthaloyl moietie 1～1.5%; Titanium dioxide 5～15%; Coarse whiting 10～30%, calcined kaolin 5～15%, talcum powder 2～8%; Sanitas 0.1～0.3%, mould inhibitor 0.1～0.3%.
The process for extracting of Pericarpium Kaki extract provided by the invention, through with Pericarpium Kaki through dry, pulverize, sieve, process Pericarpium Kaki dry powder, obtain the Pericarpium Kaki extract with acetone extract again.Pericarpium Kaki extract provided by the invention is a natural plant extracts, does not contain artificial chemical, has removing formaldehyde, eliminates stink, and effect such as antibacterial grade can be used as paint additive, and because it can be miscible with multiple coating, can be prepared into water-borne coatings.
Coating provided by the invention, self is release formaldehyde not, and the content of organic volatile gas (VOC) is lower, the quality National standard; Evidence, coating provided by the invention can effectively suppress bacterium, and bacteriostasis rate is greater than 99.99%, and the formaldehyde clearance is 93.16～95.97%; Interiro wall latex paint provided by the invention is 68.79～73.17% to the clearance of VOC, wherein, is 63.14～73.06% to the clearance of benzene, can continuous and effective must remove airborne formaldehyde and other organic volatile gas (VOC).
Embodiment
The methanal paint that removes that the invention discloses a kind of Pericarpium Kaki extract and process for extracting thereof and contain the Pericarpium Kaki extract, those skilled in the art can use for reference this paper content, suitably improve processing parameter and realize.Special needs to be pointed out is that all similarly replace and change apparent to those skilled in the art, they all are regarded as and are included in the present invention.Method of the present invention and application are described through preferred embodiment; The related personnel obviously can change or suitably change and combination methods and applications as herein described in not breaking away from content of the present invention, spirit and scope, realizes and use technology of the present invention.
The invention provides a kind of process for extracting of Pericarpium Kaki extract, comprising:
Step 1: Pericarpium Kaki dry powder is pulverized, sieves, made to Pericarpium Kaki through 60 ℃ of oven dry 10h;
Step 2: in g/mL, in Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution, at 45 ℃ of water-bath lucifuge lixiviate 2h, filters, and obtains first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, obtains the Pericarpium Kaki extract.
The present invention also provides the Pericarpium Kaki that is obtained by said extracted method extract.
The present invention also provides the Pericarpium Kaki extract to absorb formaldehyde in preparation, eliminate the application in stink or the bacteriostatic paint additive.
The present invention also provides a kind of coating, comprises the Pericarpium Kaki extract, acceptable assistant in emulsion, titanium dioxide, coarse whiting, calcined kaolin, talcum powder and the coating; Pericarpium Kaki dry powder is pulverized, sieves, made to said Pericarpium Kaki extract through 60 ℃ of oven dry 10h,, in g/mL by Pericarpium Kaki; In Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution; At 45 ℃ of water-bath lucifuge lixiviate 2h, filter, obtain first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, makes.
As preferably, coating provided by the invention by weight percentage, contains Pericarpium Kaki extract 1～3%.
As preferably, said coating is water soluble paint.
As preferably, acceptable assistant comprises one or more the mixture in thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid, terepthaloyl moietie, sanitas, the mould inhibitor in the said coating.
Acrylate and vinyl acetate emulsion is claimed vinyl acetate emulsion again, is to be the aqueous high molecular resin that the major function monomer copolymerization forms with vinyl acetate between to for plastic and Bing Xisuandingzhi.
In the coating provided by the invention, acrylate and vinyl acetate emulsion is that monomer copolymerization forms with vinyl acetate between to for plastic and Bing Xisuandingzhi.
As preferably, the glass transition temp of acrylate and vinyl acetate emulsion (Tg) is 10～20 ℃.
Preferably, the glass transition temp of acrylate and vinyl acetate emulsion (Tg) is 18 ℃.
As preferably, the minimum film-forming temperature of acrylate and vinyl acetate emulsion (MFT) is 5～6 ℃.
Preferably, in the coating provided by the invention, the acrylate and vinyl acetate emulsion outward appearance becomes milky white liquid, and solids content is 54～58%, is preferably 55%; Brookfield viscosity is 150～1600cp.s (3/60rpm/25 a ℃); Average particle diameter is 0.18～0.45 μ m, is preferably 0.18～0.3 μ m; PH value (25 ℃) is 3.5～5.0 (25 ℃); Ion characteristic is a negatively charged ion; Free monomer (weight %)＜0.3; Glass transition temp (Tg) is 18 ℃; Minimum film-forming temperature (MFT) is 6 ℃; Wet proportion is 1.03～1.08; Dried proportion is 1.07～1.13.In the coating provided by the invention, do not contain APEO in the acrylate and vinyl acetate emulsion, do not contain formaldehyde yet.
Benzene emulsion (cinnamic acrylic ester emulsion) is to be made through emulsion copolymerization by vinylbenzene and acrylate monomer.Its solids content 40～50%, viscosity 800～2000mPas, level of residual monomers are less than 0.5%, and the pH value is 8～9.Benzene emulsion sticking power is good, and glued membrane is transparent, water-fast, oil resistant, heat-resisting, ageing-resistant performance is good.Specifically can be selected from organic-silicon-modified benzene emulsion, organic fluorine modifying cinepazid emulsion.
Thickening material is claimed jelling agent again, can improve system viscosity, makes system keep even, stable suspended state or milkiness state, or forms gel.In emulsion paint was made, thickening material played many-sided coordinative role to the thickening of emulsion paint, the stable rheological property that reaches.In pigment, fillers dispersed stage, improve the viscosity of dispersed material and be beneficial to dispersion; In storage and transport process, improve paint stability, prevent that pigment, filler from sinking to the bottom caking; In construction, regulate the emulsion paint viscosity, and present good rheological etc.
Thickening material belongs to hydrophilic macromolecular compounds mostly, by sources is divided into animal class, plant class, mineral substance, synthetic type or semi-synthetic class.Simple branch can be divided into natural and synthetic two big types.Natural article great majority are to produce from the plant and the seaweeds that contain the polyose viscous substance, like starch, pectin, agar, gelatin, marine alga fat, carrageenin, dextrin, tragacanth gum, the plain derivative of polysaccharide etc.; Synthetics has derivatived celluloses such as methylcellulose gum, carboxymethyl cellulose, starch derivative, casein food grade, sodium polyacrylate, polyoxyethylene, polyvinylpyrrolidone, polyvinyl alcohol, low-molecular polyethylene wax, polyacrylamide etc.
Thickening material commonly used has ether of cellulose and derivatives class, association type alkali swelling thickening material and polyurethane thickener.(1) ether of cellulose and derivative thereof: ether of cellulose and derivatives class thickening material thereof mainly contain Natvosol, methyl hydroxyethylcellulose, Type 3U, methylhydroxypropylcellulose etc.The hydrophobically modified Mierocrystalline cellulose is on the Mierocrystalline cellulose hydrophilic skeleton, to introduce a small amount of long-chain hydrophobic alkyl, thereby becomes associative thickener, and its thickening effectiveness can be suitable with the much bigger ether of cellulose thickening material kind of relative molecular mass.(2) alkali swelling type thickening material: alkali swelling thickening material is divided into two types: non-association type alkali swelling thickening material and association type alkali swelling thickening material.(3) the non-polyurethane thickener of polyurethane thickener and hydrophobically modified: polyurethane thickener is a kind of hydrophobic grouping modification oxyethyl group urethane water-soluble polymers, belongs to the non-ionic type associative thickener.Eco-friendly association type polyurethane thickener exploitation has received generally to be paid attention to, and except the linear association type polyurethane thickener of top introduction, also has pectination associative polyurethane thickening material.In the coating provided by the invention, the thickening material of interpolation is not done qualification.
Natvosol (HEC) is a kind of white or faint yellow, and tasteless, nontoxic fibrous or pulverulent solids is prepared through etherification reaction by alkali cellulose and oxyethane (or chloroethanol), belongs to the plain ethers of non-ionic type soluble fiber.Has following character: 40 order sieving rate >=99; Softening temperature: 135～140 ℃; Performance density: 0.35～0.61g/mL; Decomposition temperature: 205～210 ℃; Combustionvelocity is slower; Balance contains the temperature amount: 23 ℃; During 50%rh 6%, during 84%rh 29%.
Because HEC has good thickening, suspension, dispersion, emulsification, bonding, film forming, protection moisture and characteristic such as protective colloid is provided, and has been widely used in fields such as oil production, coating, building, medicine food, weaving, papermaking and macromolecular polymerization reaction.Natvosol also has following character: HEC and dissolves in hot water or cold water as a kind of tensio-active agent of non-ionic type, and high temperature or boil does not precipitate, and makes it have large-scale solvability and viscosity characteristics, and non-hot gelation; Non-ionic type own can with other water-soluble polymerss on a large scale, the coexistence of tensio-active agent, salt is a kind of good colloid thickening material that contains the high density electrolyte solution; Water retention capacity exceeds one times than methylcellulose gum, has flow adjustment property preferably; The dispersive ability of HEC and the methylcellulose gum of generally acknowledging are compared dispersive ability with Vltra tears poor slightly, but the protective colloid ability is stronger.
Therefore, in the coating provided by the invention, the preferred Natvosol of thickening material (HEC).
The coating multifunctional assistant is the indispensable component of coating, and it can improve production technique, keeps shelf-stable, improves execution conditions, improves the quality of products, and gives specific function.Rationally the right selection multifunctional assistant can reduce cost, and increases economic efficiency.The multifunctional assistant that adds in the coating provided by the invention does not limit.
AMP-95 is a kind of 5% moisture content-2-amino-2-methyl-1-propanol that contains, and also is that present minority has one of lower molecular weight and overbasic industrial amine.Use the multifunctional assistant of AMP-95, except improving the coating property, also can reduce cost greatly, because other amine of required amount ratio of AMP-95 is much lower as waterborne polymeric.Not only have excellent functions such as dispersion, thickening, adjusting pH value, nondiscoloration, but also possess antimicrobial (sterilization) characteristic, also can reduce VOC (volatile organic compounds) total amount simultaneously, help the enhancing ring guaranteed cost.In view of the foregoing, as preferably, in the coating provided by the invention, add the AMP-95 multifunctional assistant.
The outward appearance of wetting dispersing agent is limpid yellow liquid; Activated feedstock is a kind of modified polypropene acid sodium-salt; The content of active ingredient is 39～41%; Solids content is 40～45%; Ion characteristic is a negatively charged ion; The pH value is 7.0～9.0.Mineral dye had remarkable wetting and dispersive ability such as ferric oxide and titanium dioxide etc.; Can improve colouring intensity, pigment stability in storage; In alkaline medium, strengthen water-base resin and emulsion consistency; Has excellent waterproofness; Preferred wetting dispersing agent has and does not contain alkylphenol ethoxylate, do not contain advantage such as solvent.The wetting dispersing agent that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, add Akzo Nobel 645 as wetting dispersing agent, it is a kind of vinylformic acid sodium salt homopolymer.
Defoamer is called kilfoam again, in industrial process, can produce many harmful foams, needs to add defoamer.Be widely used in removing the harmful foam that produces in the industry production processes such as latex, textile sizing, food fermentation, biological medicine, coating, petrochemical complex, papermaking, industry cleaning.
The composition of defoamer: (1) active ingredient, effect: broken bubble, froth breaking reduce surface tension; Representative: silicone oil, polyethers, higher alcohols, mineral oil, plant wet goods.(2) emulsifying agent, effect: make activeconstituents be dispersed into small-particle, be convenient to be dispersed in the water, better play froth breaking, press down the bubble effect.Representative: the ninth of the ten Heavenly Stems (suffering) basic phenol polyethenoxy ether, soap salt, op series etc., tween series, this dish series etc.(3) carrier, effect: help the combination of carrier and foaming system, be easy to be distributed in the foaming system, both are combined, the surface tension of itself is low, helps to press down bubble, and can reduce cost.Representative: the solvent beyond dewatering, like aliphatic hydrocarbon, aromatic hydrocarbon, oxo solvent etc.(4) emulsion adjuvant, effect: make emulsifying effectiveness better.Representative: dispersion agent: water drain silica etc.; Tackifier: CMC, polyvinyl ether etc.The defoamer that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, the CF-246 that adds England Blackburn company is as defoamer.
Film coalescence aid is claimed coalescing aid again, can promote macromolecular compound plastic flow and recoverable deformation, improves the coalescence performance, and film forming material in extensive construction temperature scope is a kind of evanescent softening agent.Commonly used is the strong solvent of ether alcohol class superpolymer, like Ucar 35 butyl ether, 1-Methoxy-2-propyl acetate etc.General emulsion has film-forming temperature, and emulsion is difficult for film forming when envrionment temperature is lower than the emulsion film forming temperature, and film coalescence aid can improve emulsion film forming mechanism, helps film forming.The film coalescence aid volatilization can not influence the characteristic of filming after the film forming.Film coalescence aid commonly used is an alcohol ester-12 in the industry at present, the TEXNAL of Yi Siman.The film coalescence aid that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, the alcohol ester-12 that adds Mitsui company is as film coalescence aid.
Terepthaloyl moietie (ethylene glycol) has another name called " glycol ", " 1,2 ethylene glycol ", is called for short EG.Molecular formula is C
2H
6O
2, chemical formula is (HOCH
2)
2, molecular weight is 62.07, is the simplest dibasic alcohol.Terepthaloyl moietie is no color or smell, pleasantly sweet liquid, can dissolve each other with water, acetone, but solubleness is less in ethers, can be used as the raw material of solvent, frostproofer and synthetic terylene.In coating, use mainly as antifreezing agent and solubility promoter.
The titanium dioxide formal name used at school is titanium dioxide (Titanium Dioxide), and molecular formula is TiO
2, relative molecular mass 79.90.The titanium dioxide chemical property is stable, does not react with most of material in the ordinary course of things, belongs to inert pigment, is considered at present the best a kind of white pigment of performance in the world.It has three kinds of crystallizations: plate titanium type, sharp titanium and rutile-type.Plate titanium type is unsettled crystal formation; No industrial utilization is worth; Anatase titanium dioxide (Anatase) is called for short the A type; And rutile-type (Rutile) is called for short the R type; All has stable lattice; Be important white pigment and porcelain glaze, superior whiteness, tinting strength, opacifying power, weathering resistance, thermotolerance and chemical stability relatively arranged, particularly do not have toxicity with other white pigments.
Titanium dioxide is a kind of intermediate oxide of slant acidity; React with other elements and compound hardly under the normal temperature, all inoperative to oxygen, ammonia, nitrogen, hydrogen sulfide, carbonic acid gas, sulfurous gas, water insoluble, fatty; Also be insoluble to diluted acid and mineral acid, alkali, only be dissolved in hydrofluoric acid.But under light action, the successive redox reaction can take place in titanium dioxide, has photochemical activity.This a kind of photochemical activity, anatase thpe white powder is particularly evident under uviolizing, even this character makes the photosensitized oxidation catalyzer of some mineral compound of titanium dioxide, is again the photosensitive reducing catalyst of some organic compound.
Titanium dioxide is widely used at coating industry, and Rutile type Titanium Dioxide is particularly most ofly consumed by coatings industry.With the coating that titanium dioxide is made, bright in luster, opacifying power is high, strong coloring force; Low-consuming, wide in variety, can play a protective role to the stability of medium, and can strengthen the physical strength and the sticking power of paint film; Prevent crackle, prevent that ultraviolet ray and moisture from seeing through, and prolongs the paint film life-span.
The titanium dioxide size-grade distribution is a comprehensive index, and it has a strong impact on titanium white powder pigment performance and product application performance, therefore, can directly analyze from size-grade distribution for opacifying power and dispersed discussion.The factor that influences the titanium dioxide size-grade distribution is comparatively complicated, at first is the size of hydrolysis initial size, through control and adjusting hydrolysis process condition, makes initial size within the specific limits.Next is a calcining temperature, and metatitanic acid is in the incinerating process, and crystal formation transition phase of particle experience and growth stage, the temperature that control is suitable makes the growth particle within the specific limits.Be exactly the pulverizing of product at last, usually to the transformation of Raymond mill and the adjusting of analyzer rotating speed, quality is pulverized in control.The titanium dioxide that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, the rutile titanium white powder that adds granularity and be 0.2 μ m is as titanium dioxide.
Water-ground limestone is called for short coarse whiting, is ground and is formed by natural carbonate mineral such as calcite, marble, Wingdale.Because its settling volume (1.1-1.9mL/g/) is littler than the light calcium carbonate settling volume of producing with chemical process (2.4-2.8mL/g), therefore be called as water-ground limestone.Water-ground limestone is the powdery mineral filler of using always, have chemical purity height, inertia big, be difficult for chemical reaction, Heat stability is good, can not decompose below 400 ℃, whiteness is high, oil absorbency is low, refractive index is low, matter is soft, dry, do not contain crystal water, hardness is hanged down advantages such as wear(ing)value is little, nontoxic, tasteless, odorless, good dispersity.
By weight percentage, contain CaCO in the water-ground limestone
399.7%, Fe
2O
3≤0.005%, SiO
20.1%, Al
2O
3≤0.15%, whiteness 95%, 18～5 μ m.Be white non-opaque pigment and filler, opacifying power is stronger, good dispersity.Because the lime carbonate color is a white, relative latex in coating, the solvent price is all cheap, and particle is thin, can be in coating homodisperse, so be a large amount of pigment extenders that use.Along with the raising of environmental consciousness, architectural coating uses water-borne coatings in a large number, and lime carbonate is because hydrophilic, and low price is widely used.Inserting of lime carbonate can strengthen deposition property and the perviousness of priming paint to substrate surface.In paste paint, lime carbonate can make coating thickening, thickening, plays a kind of filling and mends flat effect.So in paste paint, add water-ground limestone and light calcium carbonate usually, add water-ground limestone and can reach 24.6～78.5%.In finish paint, promptly in the finishing paint, half light and lustreless paint then will adopt the increase pigment extender to cut down the glossy way, and lime carbonate is exactly ideal delustring filler.Lime carbonate can be used as wherein a kind of its effect of additive performance in multicolor finish, reach and both reduce material cost, can improve the purpose of decorative effect again.Available light calcium carbonate in multicolor finish, i.e. precipitated chalk, its oil number is about 80%, about granularity 15 μ m, proportion about 2.7, refractive index are about 1.60.Also available water-ground limestone (calcite in powder) is that grindings such as natural product marble form.The suitable consumption of lime carbonate is 30% in metal anti-corrosion paint.In metal anti-corrosion paint, lime carbonate is pigment extender, also has rust inhibition.
Water-ground limestone is divided into corase grind lime carbonate (＞3 μ m), fine grinding lime carbonate (1～3 μ m), calcium carbonate superfine powder (0.5～1 μ m) by its original median size (d).Can select as required.The coarse whiting that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, add 600 order coarse whitings.
Calcined kaolin can be applicable to coating, papermaking, rubber and plastics pottery etc., and wherein paint and coating are the topmost Application Areass of China's high-quality calcined kaolin, account for about 60% and 30% of domestic ultra-fine high-brightness high grade kaolinite consumption respectively.Compare with calcined kaolin not; The kaolinic combination water content of low temperature calcination reduces; Silicon-dioxide and alchlor content all increase, and active site increases, and structure changes; Particle diameter is less and even; Fill the NR sizing material with calcined kaolin not and compare, low temperature calcination kaolin is filled the vulcanization characteristics curve basically identical of NR sizing material, and your the A type hardness tester that continues is constant; Tensile strength improves, and both physicalies all reach the requirement of the nontransparent sole industry standard of sports shoes.The calcined kaolin that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, add 3000 order ground calcined kaolins.
Talcum powder is the powder of white or off-white color, fine, no grittiness, and molecular weight is 260.8617, and hand has been touched greasy feeling.Odorless, tasteless.In water, the acid of rare ore deposit or rare alkali hydroxide solution, all do not dissolve.Talcous main component is the aqueous Magnesium Silicate q-agent of talcum, and molecular formula is Mg
3[Si
4O
10] (OH)
2Belong to oblique system.Crystal is false six sides or rhombohedral sheet, is generally fine and close bulk, foliated lamellar, radial, fibrous agrregate, crystal water white transparency or white, but present light green, pale yellow, shallow palm fibre even light red because of containing a spot of impurity; Be pearliness on the cleavage surface.Hardness approaches 1, and proportion is 2.7～2.8.Talcum have oilness, anti-stick, help stream, resistivity against fire, resistance to acid, insulativity, fusing point height, chemical torpescence, opacifying power well, good physics, chemical property such as softness, good luster, adsorptive power be strong.The talcum powder kind of adding in the coating provided by the invention does not limit.
Sanitas is meant natural or the putrid medicament of synthetic chemical ingredients inhibitory substance, to being that the microbial growth of metabolism substrate has lasting restraining effect with the corrupt substance.It can suppress the most incident Putrefaction under different situations, particularly when general sterilization functions is insufficient, still have the effect of persistence.It is added food, medicine, pigment, biological sample etc., to postpone the corruption that microorganism growth or chemical transformation cause.Nitrite and sulfurous gas are one of sanitass of using always.To fiber and the preservation of timber against decay with Dormant oils, coal tar, tannin, to biological sample with formaldehyde, mercuric chloride, toluene, butyl p-hydroxybenzoate, nitrofurazone derivative or face cream resinoid.
In the coating industry, sanitas is generally selected the isothiazolinone of card conifer and the mixture of methylisothiazolinone for use, also has benzisothiazole-3-ketone in addition.
Isothiazolinone is a kind of wide spectrum, efficient, low toxicity, non-oxidative bactericide; Mainly form, work to kill livestock acting on through the key that breaks off bacterium and algae protein matter by 5-chloro-2-methyl-4-isothiazoline-3-ketone (CMI) and 2-methyl-4-isothiazoline-3-ketone (MI).It can promptly irreversibly suppress its growth with after microorganism contacts, thereby causes the death of microorganism cells, so common bacteria, fungi, algae etc. are had very strong inhibition and killing action.The efficient of killing livestock height, degradation property is good, has characteristics such as do not produce residual, operational safety, compatibleness is good, stability is strong, use cost is low.Can be miscible with chlorine and most of yin, yang ion and nonionogenic tenside.During high dosage, isothiazolinone has been peeled off unusual effect to biological clay.
Methylisothiazolinone is a kind of efficient germicide, and heat-stable water-borne preservative has good effect for suppressing microbial growth, can suppress the growth of bacterium, fungi, mould and mould.
Benzisothiazole-3-ketone has the good sterilization performance; Under acid and alkaline environment, all can use; At 180 ℃ is to still have fabulous stability, has its configuration article of good safety performance good stability is arranged, and it can provide long protection to material system.And do not contain heavy metal, chlorine, formaldehyde and inorganic salt.
All contain formaldehyde in a lot of sanitass, as preferably, in the coating provided by the invention, add do not contain formaldehyde Tao Shi LXE as sanitas.
Mould inhibitor is meant mould had and kills or restraining effect, prevents the preparation that application goes mouldy.Phenols (like phenol), chlorophenols (like Pentachlorophenol), organic mercury salt (like phenyl mercury oleate), organic copper salt (like copper 8-quinolinolate), organic tin salt (like chlorination three second or tributyl tin etc.) are arranged, reach inorganic salt copper sulfate, mercury chloride, Sodium Fluoride etc.Be mainly used in plastics, rubber, textiles, paint and insulating material etc.The kind of the mould inhibitor that adds in the coating provided by the invention does not limit.
As preferably, in the coating provided by the invention, add Ke Laien DFX-1 as mould inhibitor.
Preferably; Coating provided by the invention; By weight percentage; Comprise: Pericarpium Kaki extract 1～3%; Acrylate and vinyl acetate emulsion or benzene emulsion 23.5～44%, Natvosol thickening material 0.3～0.9%, AMP-95 multifunctional assistant 0.05～0.15%; Wetting dispersing agent 0.3～0.6%; Defoamer 0.2～0.4%, film coalescence aid 0.8～1.5%, terepthaloyl moietie 1～1.5%; Titanium dioxide 5～15%; Coarse whiting 10～30%, calcined kaolin 5～15%, talcum powder 2～8%; Sanitas 0.1～0.3%, mould inhibitor 0.1～0.3%.
The process for extracting of Pericarpium Kaki extract provided by the invention, through with Pericarpium Kaki through dry, pulverize, sieve, process Pericarpium Kaki dry powder, obtain the Pericarpium Kaki extract with acetone extract again.Pericarpium Kaki extract provided by the invention is a natural plant extracts, does not contain artificial chemical, has removing formaldehyde, eliminates stink, and effect such as antibacterial grade can be used as paint additive, and because it can be miscible with multiple coating, can be prepared into water-borne coatings.
Coating provided by the invention, self is release formaldehyde not, and the content of organic volatile gas (VOC) is lower, the quality National standard; Evidence, coating provided by the invention can effectively suppress bacterium, and bacteriostasis rate is greater than 99.99%, and the formaldehyde clearance is 93.16～95.97%; Interiro wall latex paint provided by the invention is 68.79～73.17% to the clearance of VOC, wherein, is 63.14～73.06% to the clearance of benzene, can continuous and effective must remove airborne formaldehyde and other organic volatile gas (VOC).
In the coating provided by the invention, each composition all can be buied by market.Wherein, titanium dioxide: the rutile titanium white powder that company of U.S. Du group produces; 600 order coarse whitings: the water-ground limestone that Guangdong Dongfanghong powder company limited produces; Acrylate and vinyl acetate emulsion, benzene emulsion: LG-DOW company produces; Film coalescence aid: Mitsui company produces; The AMP-95 multifunctional assistant: U.S. An Ge company produces; Sanitas, mould inhibitor: German Clariant company produces.
Below in conjunction with embodiment, further set forth the present invention:
The extraction of embodiment 1 Pericarpium Kaki extract
Accurately take by weighing Pericarpium Kaki 100g, Pericarpium Kaki dry powder 92.8g is pulverized, sieves, made to Pericarpium Kaki through 60 ℃ of oven dry 10h; In Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution 1113.6mL, at 45 ℃ of water-bath lucifuge lixiviate 2h, filters, and collects the first filtrating 989.4mL; Collecting filter residue 85.6g, to add volume fraction at 1: 6 by mass volume ratio be 50% aqueous acetone solution 513.6mL, extracts 1h, obtains second 482.7mL that filtrates; After first filtrating, the second filtrating mixing, distillation obtains concentrated solution, after lyophilize, obtains Pericarpium Kaki extract 79.5g, and the extraction yield of Pericarpium Kaki extract is 79.5%.
The extraction of embodiment 2 Pericarpium Kaki extracts
Accurately take by weighing Pericarpium Kaki 200g, Pericarpium Kaki dry powder 183.7g is pulverized, sieves, made to Pericarpium Kaki through 60 ℃ of oven dry 10h; In Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution 2204.4mL, at 45 ℃ of water-bath lucifuge lixiviate 2h, filters, and collects the first filtrating 2008.5mL; Collecting filter residue 173.1g, to add volume fraction at 1: 6 by mass volume ratio be 50% aqueous acetone solution 1038.6mL, extracts 1h, obtains second 879.4mL that filtrates; After first filtrating, the second filtrating mixing, distillation obtains concentrated solution, after lyophilize, obtains Pericarpium Kaki extract 160.2g, and the extraction yield of Pericarpium Kaki extract is 80.1%.
Embodiment 3 Pericarpium Kaki extractive type deodorant gas, remove the formaldehyde validity check
The Pericarpium Kaki extract that embodiment 1, embodiment 2 are provided carries out the routine evaluation, and the result shows, contains the Pericarpium Kaki polyphenol in the Pericarpium Kaki extract, and the content of Pericarpium Kaki polyphenol is 79.9～83.5%.
The Pericarpium Kaki extract 10g that taking by weighing the embodiment of the invention 1 provides removes foul smell, removes the formaldehyde validity check.
The mensuration of ammonia, Trimethylamine 99, indoles, formaldehyde: use headspace gas chromatography.
Test group: in the 100mL injection bottle that is added with the Pericarpium Kaki extract 10g that the embodiment of the invention 1 provides in advance, inject the water saturation solution of ammonia, Trimethylamine 99, indoles, formaldehyde respectively, behind the 12h, draw 1mL bottle head space gas sampling, obtain the test group peak height;
Blank group: in the 100mL injection bottle that does not add the Pericarpium Kaki extract that the embodiment of the invention 1 provides, inject the water saturation solution of Trimethylamine 99, formaldehyde, indoles respectively, behind the 12h, draw 1mL bottle head space gas sampling, obtain blank group peak height;
Wherein, the Pericarpium Kaki extract that the embodiment of the invention 1 provides is 49.12% to the clearance of ammonia, is 54.79% to the clearance of Trimethylamine 99, is 46.58% to the clearance of indoles, and the clearance of PARA FORMALDEHYDE PRILLS(91,95) is 73.21%.
According to above-mentioned test method; The removing foul smell, remove the formaldehyde effect and verify of the Pericarpium Kaki extract that the embodiment of the invention 2 is provided; The result shows; The Pericarpium Kaki extract that the embodiment of the invention 2 provides is 53.04% to the clearance of ammonia; Clearance to Trimethylamine 99 is 55.17%; Clearance to indoles is 52.03%, and the clearance of PARA FORMALDEHYDE PRILLS(91,95) is 79.65%.
Comprehensive above-mentioned test-results, Pericarpium Kaki extract provided by the invention have better except that foul smell, except that the formaldehyde effect.
Embodiment 4 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 1.0g that the embodiment of the invention 1 provides, acrylate and vinyl acetate emulsion 24.5g, Natvosol thickening material 0.3g; AMP-95 multifunctional assistant 0.05g, wetting dispersing agent 0.3g, defoamer 0.2g; Film coalescence aid 0.8g, terepthaloyl moietie 1.5g, titanium dioxide 5g; 600 order coarse whiting 30g; Calcined kaolin 5g, talcum powder 2g, sanitas 0.1g; Mould inhibitor 0.1g is measured 29.15mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 1 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add acrylate and vinyl acetate emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
Embodiment 5 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 2.0g that the embodiment of the invention 2 provides, benzene emulsion 25g, Natvosol thickening material 0.5g; AMP-95 multifunctional assistant 0.15g, wetting dispersing agent 0.45g, defoamer 0.4g; Film coalescence aid 1.5g, terepthaloyl moietie 1.2g, titanium dioxide 15g; 600 order coarse whiting 20g; Calcined kaolin 15g, talcum powder 8g, sanitas 0.3g; Mould inhibitor 0.3g is measured 10.2mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 2 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add benzene emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
Embodiment 6 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 3.0g that the embodiment of the invention 1 provides, acrylate and vinyl acetate emulsion 28.2g, Natvosol thickening material 0.5g; AMP-95 multifunctional assistant 0.1g, wetting dispersing agent 0.6g, defoamer 0.3g; Film coalescence aid 1g, terepthaloyl moietie 1.5g, titanium dioxide 10g; 600 order coarse whiting 28g; Calcined kaolin 10g, talcum powder 5g, sanitas 0.2g; Mould inhibitor 0.2g is measured 11.4mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 1 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add acrylate and vinyl acetate emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
Embodiment 7 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 2.5g that the embodiment of the invention 2 provides, benzene emulsion 32.3g, Natvosol thickening material 0.9g; AMP-95 multifunctional assistant 0.15g, wetting dispersing agent 0.5g, defoamer 0.35g; Film coalescence aid 1.4g, terepthaloyl moietie 1g, titanium dioxide 8g; 600 order coarse whiting 10g; Calcined kaolin 12g, talcum powder 4g, sanitas 0.1g; Mould inhibitor 0.1g is measured 26.7mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 2 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add benzene emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
Embodiment 8 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 1.5g that the embodiment of the invention 1 provides, acrylate and vinyl acetate emulsion 23.5g, Natvosol thickening material 0.7g; AMP-95 multifunctional assistant 0.05g, wetting dispersing agent 0.4g, defoamer 0.25g; Film coalescence aid 1.2g, terepthaloyl moietie 1.2g, titanium dioxide 13g; 600 order coarse whiting 30g; Calcined kaolin 8g, talcum powder 6g, sanitas 0.2g; Mould inhibitor 0.2g is measured 13.8mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 1 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add acrylate and vinyl acetate emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
Embodiment 9 coating that contain the Pericarpium Kaki extract provided by the invention
Accurately take by weighing the Pericarpium Kaki extract 1.0g that the embodiment of the invention 2 provides, benzene emulsion 44g, Natvosol thickening material 0.7g; AMP-95 multifunctional assistant 0.05g, wetting dispersing agent 0.6g, defoamer 0.25g; Film coalescence aid 1.2g, terepthaloyl moietie 1.2g, titanium dioxide 13g; 600 order coarse whiting 10g; Calcined kaolin 8g, talcum powder 2g, sanitas 0.2g; Mould inhibitor 0.2g is measured 15.8mL water.
Earlier add entry earlier at stirring tank, order adds Natvosol thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid again, and middling speed is disperseed behind the terepthaloyl moietie; Add titanium dioxide then, 600 order coarse whitings, the Pericarpium Kaki extract that the embodiment of the invention 2 provides, calcined kaolin, high speed dispersion to fineness is less than 50 μ m behind the talcum powder; Add benzene emulsion after changeing low speed, sanitas, mould inhibitor stirs, and promptly gets.
The quality of 10 pairs of coating provided by the invention of embodiment detects
The coating that the embodiment of the invention 4 to 9 provides send national building materials test center, and detected result is seen table 1.
Table 1 coating purifying formaldehyde provided by the invention rate detects
The quality of 11 pairs of coating provided by the invention of embodiment detects
According to the detection method of limits of harmful substances national standard in the GB18582-2008 indoor decorating material interior wall coating, it is that beam chemistry institute Institute of Analysis is detected that the coating that the embodiment of the invention 4 to 9 is provided is delivered Beijing, and the result sees table 2.
Table 2 coating objectionable impurities provided by the invention detects
Can know the equal National standard of coating provided by the invention by table 2.
The quality of 12 pairs of coating provided by the invention of embodiment detects
It is that beam chemistry institute Institute of Analysis is detected that the coating that the embodiment of the invention 4 to 9 is provided is delivered Beijing, and the result sees table 3.
Table 3 coating microorganism detection provided by the invention
Can know that by table 3 coating that the embodiment of the invention 4 to 9 provides has good inhibitory effect to bacterium, to streptococcus aureus, colibacillary inhibiting rate all greater than 99.99%.
The formaldehyde removal effect that embodiment 13 detects coating provided by the invention
Handled object such as timber (building materials such as main adhesive plate, fiberboard or decorative sheet), paper, fiber, fibre product, resin forming product etc.
With the coating that makes among the embodiment 4 to 9,, the formaldehyde performance of removing of coating provided by the invention is estimated according to the measuring method of following burst size of methanal.
The preparation of test film: 6 F2 adhesive plates (specification is the two sides of 35cm * 35cm * 0.55cm), evenly applies the coating that embodiment 4 to 9 makes respectively, after the drying at room temperature, in the plastics bag of packing into, sealing 24h.From the F2 adhesive plate that is coated with the coating that embodiment 4 to 9 makes, be cut into test film with 15cm * 5cm * 0.55cm.
The preparation of comparison film: from the F2 adhesive plate of uncoated coating provided by the invention, be cut into comparison film according to 15cm * 5cm * 0.55cm.
Crystallizing dish (the diameter 120mm that fills 300mL distilled water is placed in bottom at moisture eliminator (the about 10L of big or small 240mm, internal volume that meets JIS R3503 regulation); High 60mm); Be covered with porcelain plate above it; Place above-mentioned test film and comparison film respectively; Place 24h in 20～25 ℃, the formaldehyde that the F2 adhesive plate is separated out absorbs to the distilled water as test soln.
Concentration of formaldehyde is measured with luminous point colorimeter colorimetric assay according to acetylacetone method in the test soln.
Formaldehyde diffusing capacity (mg/L) is the formaldehyde diffusing capacity of comparison film.
Formaldehyde reduction (mg/L) is the formaldehyde diffusing capacity of the formaldehyde diffusing capacity-comparison film of test film.
Formaldehyde is removed rate (%)=formaldehyde reduction (mg/L)/formaldehyde diffusing capacity (mg/L) * 100.
The result sees table 4.
Table 4 coating provided by the invention removes the formaldehyde effect
Can be known that by table 4 the coating release formaldehyde amount that the embodiment of the invention 4 to 9 provides is few, the rate of removing of formaldehyde reaches 93.16～95.96%, can effectively remove the formaldehyde that upholstery and furniture are separated out.
The formaldehyde removal effect that embodiment 14 detects coating provided by the invention
The wood-based plate (seven lis of plates) of 7 25cm * 25cm is put into the encloses container of 20L respectively, measure and write down two concentration of formaldehyde values in the encloses container with 4160 type formaldehyde monitors behind the 24h; Take out wood-based plate then, will be wherein one apply common coating (not adding Pericarpium Kaki extract provided by the invention, the auxiliary agent in the coating that the auxiliary agent in the coating provides with embodiment 4 to 9) as control group, whenever apply one time at a distance from 1h, apply altogether 3 times; All the other 6 reach the coating that the embodiment of the invention 4 to 9 provides respectively as test group, every at a distance from 1h coating one time, apply altogether 3 times.Put into encloses container behind the 24h finish-drying again, behind the airtight 24h, measure and write down the concentration of formaldehyde value in the encloses container again with 4160 type formaldehyde monitors.Behind 36h, 48h, 60h, 72h, 5d, 7d, 11d, 18d, 30d, 60d, 90d, measure and the record concentration of formaldehyde respectively.
Detecting instrument: be the U.S.'s 4160 type formaldehyde monitors that the national standard metering is assert, display density value numeral in the time of detection.The numerical value that 4160 type formaldehyde monitors are measured and the deviation of laboratory chemical process detected value are generally in 5%.
Measure numerical standard: the content of measured value formaldehyde in indoor air is international standard value ppm, is suitable for China's standard, need be converted into milligram value (mg/m
3).
The highest limit value of national regulation indoor formaldehyde concentration (GB/T 18883-2002) 0.10mg/m
3Milligram with the reduction formula of ppm is: 1ppm=1.247mg/m
3
Measure the result and see table 5.
Table 5 coating provided by the invention removes the formaldehyde effect
Can be known that by table 5 common coating also has certain formaldehyde effect of removing, the formaldehyde clearance when 24h is 8.24%; Behind the 5d, the formaldehyde clearance reaches minimum, is 18.09%; Pass in time, remove the formaldehyde rate and do not rise counter falling, this shows that the amount of common coating absorption formaldehyde is very limited, can not absorb the formaldehyde of separating out in the interior finish in the follow-up period, and perhaps the formaldehyde that will absorb in the past on the contrary discharges in the gas that makes the return trip empty again.The coating that the embodiment of the invention 4 to 9 provides in the time, keeps formaldehyde clearance preferably at 24h to 90d always, is 93.48～95.97%, can effectively remove the formaldehyde that discharges in the interior finish.
The organic volatile gas removal effect that embodiment 15 detects coating provided by the invention
The solution that discharges objectionable impuritiess such as benzene, VOC is sprayed into respectively in the climate box of 7 airtight same volumes; Wherein place the sheet glass that is coated with the coating that the embodiment of the invention 4 to 9 makes in 6 climate boxs; In the integral point time period, detect with benzene detector tube, VOC detector tube.Or detect with the portable benzene organic gas of U.S. home-made TLV FALCON, VOC organic gas PID monitor.
Test group: select 1 airtight proofing box (about 1m
3, inside is provided with ultraviolet source), be placed with the sheet glass that surfaces coated is covered with the 50cm * 50cm of the coating that embodiment 4 makes among the present invention in the proofing box.Spray into benzene, control constant temp (23 ℃ ± 2), humidity (60%) are fully volatilized benzene through 30min and are filled the air.
Control group: select airtight proofing box (about 1m with the identical size of test group
3, inside is provided with ultraviolet source), be placed with the sheet glass of 50cm * 50cm in the proofing box, do not apply the coating that embodiment 4 to 9 makes among the present invention.Spray into benzene, control constant temp (23 ℃ ± 2), humidity (60%) are fully volatilized benzene through 30min and are filled the air.
Behind the 24h,, and carry out blank determination with the absorption liquid of on-the-spot unsampled blank absorption tube with the air sampling of atmosphere sampling instrument to each airtight proofing box.According to GB/T11737-2001 " benzene,toluene,xylene health test method in the atmosphere of residential district " test benzene in air concentration.Or detect and record with the portable benzene organic gas of U.S. TLV FALCON detector.
The detection method of VOC is approximate with benzene, and different only is obnoxious flavour that sprays into and the instrument that detects usefulness.Measure the result and see table 6.
Table 6 coating provided by the invention removes organic volatile gas effect
Can know that by table 6 coating that embodiment 4 provided by the invention makes has removal effect preferably to airborne VOC (volatile organic compounds) and obnoxious flavour such as benzene etc.Clearance to VOC is 69.23%, wherein, is 64.38% to the clearance of benzene.
The coating that embodiment 5 to 9 provided by the invention makes also has the close effect of coating that makes with embodiment 1, can effectively remove airborne VOC and toxic and harmful equally.Wherein, the coating that embodiment 5 to 9 makes is 68.79～73.17% to the clearance of VOC, wherein, is 63.14～73.06% to the clearance of benzene.
Comprehensive The above results, coating provided by the invention is 68.79～73.17% to the clearance of VOC, wherein, is 63.14～73.06% to the clearance of benzene.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be considered as protection scope of the present invention.
Claims (8)
1. the process for extracting of a Pericarpium Kaki extract is characterized in that, comprising:
Step 1: Pericarpium Kaki dry powder is pulverized, sieves, made to Pericarpium Kaki through 60 ℃ of oven dry 10h;
Step 2: in g/mL, in Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution, at 45 ℃ of water-bath lucifuge lixiviate 2h, filters, and obtains first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, obtains the Pericarpium Kaki extract.
2. the Pericarpium Kaki extract that process for extracting as claimed in claim 1 obtains.
3. Pericarpium Kaki extract as claimed in claim 2 absorbs formaldehyde in preparation, eliminates the application in stink or the bacteriostatic paint additive.
4. a coating is characterized in that, comprises the Pericarpium Kaki extract, acceptable assistant in emulsion, titanium dioxide, coarse whiting, calcined kaolin, talcum powder and the coating; Pericarpium Kaki dry powder is pulverized, sieves, made to said Pericarpium Kaki extract through 60 ℃ of oven dry 10h,, in g/mL by Pericarpium Kaki; In Pericarpium Kaki dry powder, adding volume fraction according to mass volume ratio 1: 12 is 50% aqueous acetone solution; At 45 ℃ of water-bath lucifuge lixiviate 2h, filter, obtain first filtrating; The collection filter residue is 50% aqueous acetone solution again by mass volume ratio adding in 1: 6 volume fraction, extracts 1h, obtains second filtrating; First filtrating, second filtrating are mixed, and distillation obtains concentrated solution, after lyophilize, makes.
5. coating as claimed in claim 4 is characterized in that, by weight percentage, contains Pericarpium Kaki extract 1～3%.
6. coating as claimed in claim 4; It is characterized in that acceptable assistant comprises one or more the mixture in thickening material, multifunctional assistant, wetting dispersing agent, defoamer, film coalescence aid, terepthaloyl moietie, sanitas, the mould inhibitor in the said coating.
7. coating as claimed in claim 4 is characterized in that, said coating is water soluble paint.
8. coating as claimed in claim 4; It is characterized in that; By weight percentage; Comprise: Pericarpium Kaki extract 1～3%; Acrylate and vinyl acetate emulsion or benzene emulsion 23.5～44%, Natvosol thickening material 0.3～0.9%, AMP-95 multifunctional assistant 0.05～0.15%; Wetting dispersing agent 0.3～0.6%; Defoamer 0.2～0.4%, film coalescence aid 0.8～1.5%, terepthaloyl moietie 1～1.5%; Titanium dioxide 5～15%; Coarse whiting 10～30%, calcined kaolin 5～15%, talcum powder 2～8%; Sanitas 0.1～0.3%, mould inhibitor 0.1～0.3%.
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| CN103555299A (en) * | 2013-11-15 | 2014-02-05 | 西安石油大学 | Method for preparing environment-friendly thickening agent for oil field from persimmon peels and application of thickening agent |
| CN103555299B (en) * | 2013-11-15 | 2015-09-23 | 西安石油大学 | Method for preparing environment-friendly thickening agent for oil field from persimmon peels and application of thickening agent |
| CN105568748A (en) * | 2015-12-19 | 2016-05-11 | 北海光利彩色印刷有限公司 | White paperboard and method for manufacturing same |
| CN105542549A (en) * | 2016-01-22 | 2016-05-04 | 湖北融友生物科技有限公司 | Biological formaldehyde remover |
| CN105795314A (en) * | 2016-04-06 | 2016-07-27 | 安徽新珠城鱼坊餐饮管理有限公司 | Treatment method for fish baking before pickling |
| CN105852027A (en) * | 2016-04-06 | 2016-08-17 | 安徽新珠城鱼坊餐饮管理有限公司 | Treatment liquid used before marinating of roasted fish |
| CN108244145A (en) * | 2018-02-07 | 2018-07-06 | 广州市凯卫莎环保科技有限公司 | Triple effect all-weather light catalyst indoor air purification agent and preparation method and application |
| CN108144417A (en) * | 2018-03-16 | 2018-06-12 | 广州市凯卫莎环保科技有限公司 | Multiple-effect, environmentally-friendly eliminating smell agent and preparation method and application |
| CN108144097A (en) * | 2018-03-16 | 2018-06-12 | 广州市凯卫莎环保科技有限公司 | Fragrant essential oil and preparation method and application |
| CN108951257A (en) * | 2018-08-16 | 2018-12-07 | 枣庄市天龙纸业有限公司 | A kind of environmental protection low basis weight coated duplex board with grey back and preparation method thereof |
| CN110938890A (en) * | 2019-12-07 | 2020-03-31 | 杭州东南纺织有限公司 | Production method of polyester colored yarn |
| CN112972742A (en) * | 2021-02-23 | 2021-06-18 | 浙江思享家环保科技有限公司 | Environment-friendly plant composite extract for removing formaldehyde, decomposing peculiar smell and sterilizing and preparation thereof |
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