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

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

technical field [0001] The invention relates to the field of fine chemicals, in particular to an interior wall latex paint containing oxidized corn starch. Background technique [0002] The pollution of interior decoration materials and furniture is the main cause of indoor air pollution; materials such as paint, plywood, shaving filler, interior wall paint, and plastic veneer all contain organic volatiles such as formaldehyde, benzene, ethanol, and chloroform. [0003] The main components of organic volatile gases (VOC) are: hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, including: benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters , acid and petroleum hydrocarbon compounds, etc.; when the VOC in the room reaches a certain concentration, it will cause symptoms such as headache, nausea, vomiting, fatigue, etc., and even cause convulsions and coma in severe cases, damage the liver, kidney...

AI Technical Summary

Problems solved by technology

[0005] At present, the adsorption method is often used to remove formaldehyde and other harmful organic volatiles; the basic principle of the adsorption method is: add some natural or synthetic materials with more capillary pores and adsorption effect to the paint, and absorb formaldehyde in the capillary pores The disadvantage of this method is that it damages the physical properties of the paint; because in order to achieve sufficient adsorption, it is necessary to ensure that the capillary pores of the porous material are exposed to the surface of the paint film, so that the paint film cannot be too dense, so its scrub resistance is affected accordingly; adsorption Another disadvantage of the method is that when the formaldehyde content in the air is low, the adsorbed formaldehyde will be dissociated or replaced by other gases, which cannot achieve a good adsorption effect, and the adsorption capacity of the adsorbent material is very limited. It is easy to reach saturation; in addition, in the prior art, auxiliary materials such as bamboo carbon powder, photocatalyst, and vinegar-acrylic emulsion are also added as means for adsorbing formaldehyde and chemically reacting harmful elements in the coating body, although this scheme has certain effects, but There are still considerable harmful residues such as formaldehyde in the final latex paint, and the effect is not optimal; therefore, it is necessary to provide a formaldehyde-free, low content of other harmful organic volatiles, and can effectively remove formaldehyde, other harmful organic Volatile latex paint for interior walls has practical significance

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