CN104449123A

CN104449123A - Interior wall latex paint containing oxidized corn starch and preparation method thereof

Info

Publication number: CN104449123A
Application number: CN201410721530.5A
Authority: CN
Inventors: 杨俊宇; 杨俊杰; 杜文杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-03
Filing date: 2014-12-03
Publication date: 2015-03-25

Abstract

The invention discloses interior wall latex paint containing oxidized corn starch and a preparation method thereof. The interior wall latex paint is prepared from the following raw material components in parts by weight: 4-8 parts of oxidized corn starch, 0.6-0.9 part of trimethylamine, 1-2 parts of bamboo charcoal powder, 0.2-0.4 part of photocatalyst, 12-18 parts of acetic styrene-acrylic emulsion, 0.2-0.6 part of hydroxyethyl cellulose thickening agent, 0.1-0.3 part of wetting dispersant, 0.1-0.3 part of defoaming agent, 0.6-0.9 part of coalescing agent, 6-10 parts of titanium dioxide, 15-20 parts of coarse whiting, 4-9 parts of calcined kaolin, 4-10 parts of talcum powder, 0.15-0.35 part of a preservative and 0.15-0.35 part of a mildew preventive. The preparation method comprises the following steps: sequentially preparing the oxidized corn starch and trimethylamine, adding the aids, respectively mixing and reacting, thereby obtaining the final product. The interior wall latex paint containing the oxidized corn starch has the characteristics of no toxicity and environment friendliness and has the effects of adsorbing and digesting volatile organic compounds (VOC) generated by various indoor home decorations.

Description

A kind of interiro wall latex paint containing oxidised maize starch and preparation method thereof

Technical field

The present invention relates to field of fine chemical, particularly a kind of interiro wall latex paint containing oxidised maize starch.

Background technology

The pollution of house decorative material and furniture is the major cause causing room air pollution at present; Wherein the material such as paint, glued board, wood shavings filler, interior wall coating, plastic facing is all containing organic volatiles such as formaldehyde, benzene, ethanol, chloroforms.

The main component of volatile organic compounds (VOC) has: hydro carbons, halohydrocarbon, oxygen hydrocarbon and nitrogen hydrocarbon, and it comprises: benzene homologues, organic chloride, freon series, organic ketone, amine, alcohol, ether, ester, acid and petroleum hydrocarbon compound etc.; When VOC reaches finite concentration in room, can cause headache, Nausea and vomiting, the symptom such as weak, even cause tic, stupor time serious, injury liver, kidney, brain and neural system, cause the serious consequences such as hypomnesis; In upholstery process, VOC mainly from paint, coating and tackiness agent, comprises the materials such as formaldehyde, ammonia, ethylene glycol, ester class.

Formaldehyde is a kind of important organic raw material, is mainly used in synthetic cakingagent, as: resol processed, urea-formaldehyde resin, synthon (as synthesis vinylon-polyvinyl formal), leather industry, medicine, dyestuff etc.Owing to employing Precondensed UreaFormaldehyde Resin tamanori in various artificial board (shaving board, fiberboard, glued board etc.), thus containing formaldehyde; The making of new-type furniture, the decoration on metope, ground is laid, and all will use tackiness agent; The place of every a large amount of use tackiness agent, always has Form aldehyde release; In addition, some chemical fibre carpet, paint are also containing a certain amount of formaldehyde; Formaldehyde is irritant gas that is colourless, that have overpowering odor, for more highly toxic material, China's noxious chemical priority acccess control list is in second, be defined as carcinogenic by the World Health Organization and cause deformed material, being generally acknowledged allergen, is also one of potential strong mutagen; Formaldehyde is magma poisonous substance, can and protein bound, suck after high-concentration formaldehyde, there will be the serious stimulation of respiratory tract and oedema, eye shouting pain, headache, also bronchial asthma can occur.Direct skin contact formaldehyde, can cause dermatitis, color spot, necrosis; The a small amount of formaldehyde of frequent suction, can cause chronic poisoning, serious caused leukemia and autonomic nervous dysfunction etc.; High-concentration formaldehyde or a kind of genotoxicity material, laboratory animal, when laboratory high density sucks, can cause rhinopharyngeal neoplasm.

At present, absorption method is often taked to remove formaldehyde and other harmful organic volatiles; The ultimate principle of absorption method is: in coating, add some contain more pore, have adsorbing natural or synthetic materials, by formaldehyde absorbing in pore; The shortcoming of this method is, the physical property of infringement coating; Because reach abundant absorption, just must ensure that the pore of porous material is exposed to coating surface, such film can not be too fine and close, and therefore its scrub performance is corresponding is affected; Another shortcoming of absorption method is, when aerial formaldehyde content is lower, the formaldehyde of absorption can dissociate out, or by other gas displacement out, the adsorption effect do not reached, and the adsorptive power of sorbing material is very limited, is easy to reach capacity; In another prior art, also auxiliary materials such as adding bamboo carbon powder, photocatalyst, acrylate and vinyl acetate emulsion is had to fall the means of the harmful element in coating body respectively as formaldehyde adsorption and chemical reaction, although this scheme has certain effect, but all also have the nuisances such as suitable formaldehyde to remain in final latex paint, effect is not best; Therefore, provide that a kind of self is lower containing formaldehyde, other harmful volatile organic content and effectively can remove the interiro wall latex paint of formaldehyde, other harmful organic volatiles, there is realistic meaning.

Summary of the invention

The invention discloses a kind of interiro wall latex paint containing oxidised maize starch, itself can not produce without various volatile organic compounds (VOC), and the volatile organic compounds (VOC) that the various house ornamentation in indoor produces is had to absorption and clears up effect.

The technical solution used in the present invention is as follows:

A kind of interiro wall latex paint containing oxidised maize starch, it is characterized in that, be made up of the material component of following weight part: oxidised maize starch 4 ~ 8, Trimethylamine 99 0.6 ~ 0.9, bamboo carbon powder 1 ~ 2, photocatalyst 0.2 ~ 0.4, acrylate and vinyl acetate emulsion 12 ~ 18, hydroxyethylcellulose thickener 0.2 ~ 0.6, wetting dispersing agent 0.1 ~ 0.3, defoamer 0.1 ~ 0.3, film coalescence aid 0.6 ~ 0.9, titanium dioxide 6 ~ 10, coarse whiting 15 ~ 20, calcined kaolin 4 ~ 9, talcum powder 4 ~ 10, sanitas 0.15 ~ 0.35, sanitas 0.15 ~ 0.35.

Above-mentioned raw materials component commonly uses bamboo carbon powder, photocatalyst, acrylate and vinyl acetate emulsion etc. in the prior art of interiro wall latex paint can help absorption and clear up on the basis of volatile organic compounds (VOC), add oxidised maize starch, Trimethylamine 99 component, and eliminate the flammable auxiliary agent A MP-95 and poisonous auxiliary agent glycol component that add in conventional coating; Oxidised maize starch under Trimethylamine 99 effect, viscosity good, anticorrosion nontoxic, free from extraneous odour, environment protection health.

Oxidised maize starch and Trimethylamine 99 is utilized to replace AMP-95 and ethylene glycol, decrease the combustiblecomponents in emulsion paint and toxic ingredient, particularly emulsion paint ethylene glycol of the prior art, its molecular weight is low, character is active, the reactions such as esterification, etherificate, alcoholization, oxidation, acetal, dehydration can be played, after eliminating this composition in material component of the present invention, substantially increase its safety and environmental protection performance; Trimethylamine 99 is the hydrolytic reagent of starch, can effectively make starch obtain good tackiness.

The bamboo carbon powder of the prior art retained in material component of the present invention refers to the powdery substance of bamboo charcoal, has fabulous adsorptive power, can absorb obnoxious flavour in air quickly and effectively; Photocatalyst is a kind of nano level metal oxide materials (titanium dioxide is more conventional), and it coats substrate surface, forms film after drying, under the effect of light, can produce similar photosynthetic light-catalyzed reaction.Photocatalyst is under the rayed of specific wavelength (388nm), the photosynthetic a series of energy conversion process of similar plants Determination of Chlorophyll can be produced, be that chemical energy gives photocatalyst surface very strong oxidation capacity light energy conversion, the various organic compound of oxidable decomposition and mineralising part inorganics, and there is antibacterial effect; Under light illumination, photocatalyst can absorb the luminous energy being equivalent to below band-gap energy, makes its surface excitation occur and produce electronics (e-) and hole (h+); These electronics and hole have very strong reduction and oxidation capacity, and the oxygen can deposited with water or appearance reacts, and produce hydroxide radical free radical (OH) and super cloudy oxonium ion (O); The energy of oxidation of these holes and hydroxide radical free radical is greater than 120kcal/mol, has very strong oxidation capacity, almost the chemical bond of all formation organic molecules can be cut off and decompose; Photocatalyst produces the extremely strong free hydroxy of oxidation capacity and active oxygen, there is very strong photoredox function, the various organic compound of oxidable decomposition and part inorganics, the cytolemma of bacterium and the protein of solidification virus can be destroyed, can kill bacteria Sum decomposition organic pollutant, organic pollutant is resolved into free of contamination water (H ₂and carbonic acid gas (CO O) ₂); Therefore, photocatalyst can be degraded toxic and harmful in air effectively; Effectively can kill various bacteria, antibiotic rate is up to 99.99%, and the toxin that bacterium or fungi can be discharged decomposes and harmless treatment; Also possesses the function such as deodorizing, anti-soil simultaneously.

Beneficial effect of the present invention:

The present invention by increasing oxidised maize starch and Trimethylamine 99 substitutes AMP-95 and ethylene glycol in emulsion paint, overcome in prior art the shortcoming having flammable hidden danger and toxic active ingredient, improve the interiro wall latex paint of material component, have feature that is nontoxic, environmental protection, the volatile organic compounds (VOC) simultaneously had the various house ornamentation in indoor produces has absorption and clears up effect.

Embodiment

Embodiment 1

Raw material (kg) is taken: oxidised maize starch 4 ~ 8, Trimethylamine 99 0.6 ~ 0.9, bamboo carbon powder 1 ~ 2, photocatalyst 0.2 ~ 0.4, acrylate and vinyl acetate emulsion 12 ~ 18, hydroxyethylcellulose thickener 0.2 ~ 0.6, wetting dispersing agent 0.1 ~ 0.3, defoamer 0.1 ~ 0.3, film coalescence aid 0.6 ~ 0.9, titanium dioxide 6 ~ 10, coarse whiting 15 ~ 20, calcined kaolin 4 ~ 9, talcum powder 4 ~ 10, sanitas 0.15 ~ 0.35, mould inhibitor 0.15 ~ 0.35 by following weight; And measure 160 ~ 170L water.

Preparation method:

First add water at stirring tank, oxidised maize starch is under agitation slowly added, stir and infiltrate, then order adds Trimethylamine 99, hydroxyethylcellulose thickener, wetting dispersing agent, defoamer, film coalescence aid; Then titanium dioxide, coarse whiting, bamboo carbon powder, photocatalyst, calcined kaolin, talcum powder is added; Add acrylate and vinyl acetate emulsion after turning low speed, sanitas, mould inhibitor stir; Be heated to 85 DEG C, constant temperature stirring reaction 180 minutes, to obtain final product.

The removal organic volatile gas effectiveness of the interiro wall latex paint that the interiro wall latex paint containing oxidised maize starch of the present invention and prior art are produced contrasts as following table:

As seen from the above table, the interiro wall latex paint that embodiment 1 provided by the invention obtains not only oxious component is starkly lower than prior art, and has extraordinary removal effect to the VOC (volatile organic compounds) in air and obnoxious flavour such as benzene etc.; Being 86.84% to the clearance of VOC, wherein, is 78.94% to the clearance of benzene.

Further, preferred embodiment 2

Raw material (kg) is taken: oxidised maize starch 6, Trimethylamine 99 0.8, bamboo carbon powder 1.5, photocatalyst 0.3, acrylate and vinyl acetate emulsion 15, hydroxyethylcellulose thickener 0.4, wetting dispersing agent 0.15, defoamer 0.2, film coalescence aid 0.7, titanium dioxide 8, coarse whiting 17, calcined kaolin 5, talcum powder 7, sanitas 0.2, mould inhibitor 0.2 by following weight; And measure 170L water.

Preparation method:

As seen from the above table, the interiro wall latex paint that embodiment 2 provided by the invention obtains not only oxious component is starkly lower than prior art, and has extraordinary removal effect to the VOC (volatile organic compounds) in air and obnoxious flavour such as benzene etc.; Being 94.23% to the clearance of VOC, wherein, is 93.75% to the clearance of benzene.

It is only the preferred embodiment of the present invention described in above embodiment; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. the interiro wall latex paint containing oxidised maize starch, it is characterized in that, be made up of the material component of following weight part: oxidised maize starch 4 ~ 8, Trimethylamine 99 0.6 ~ 0.9, bamboo carbon powder 1 ~ 2, photocatalyst 0.2 ~ 0.4, acrylate and vinyl acetate emulsion 12 ~ 18, hydroxyethylcellulose thickener 0.2 ~ 0.6, wetting dispersing agent 0.1 ~ 0.3, defoamer 0.1 ~ 0.3, film coalescence aid 0.6 ~ 0.9, titanium dioxide 6 ~ 10, coarse whiting 15 ~ 20, calcined kaolin 4 ~ 9, talcum powder 4 ~ 10, sanitas 0.15 ~ 0.35, sanitas 0.15 ~ 0.35.

2. a kind of interiro wall latex paint containing oxidised maize starch according to claim 1, it is characterized in that, be made up of the material component of following weight part: oxidised maize starch 6, Trimethylamine 99 0.8, bamboo carbon powder 1.5, photocatalyst 0.3, acrylate and vinyl acetate emulsion 15, hydroxyethylcellulose thickener 0.4, wetting dispersing agent 0.15, defoamer 0.2, film coalescence aid 0.7, titanium dioxide 8, coarse whiting 17, calcined kaolin 5, talcum powder 7, sanitas 0.2, sanitas 0.2.

3. the preparation method of a kind of interiro wall latex paint containing oxidised maize starch as claimed in claim 1 or 2, is characterized in that, comprise the following steps: