CN105273555A - Dehumidifying sterilizing wallpaper containing modified acrylic resin emulsion coating - Google Patents

Abstract

The invention discloses a dehumidifying sterilizing wallpaper containing a modified acrylic resin emulsion coating. A cellulose acetate copolymerized modified water-based acrylic resin emulsion serves as a resin adhesive applied to the coating slurry used for the wallpaper, wherein the emulsion is stable in property and contains no chronic volatile toxic compound, such as, formaldehyde, and the like; the formed coating is smooth and elastic and has the functions of resisting water, resisting dirt, sterilizing, and the like; compared with the traditional PVC (Poly Vinyl Chloride) thickener, the coating has the advantage that the plasticizing temperature can be below 120-150 DEG C; compared with the micro powder, the polylactic acid porous fiber containing the nanometer copper oxide and active alumina micro powder is easier to scatter in the emulsion; the air permeability of the coating is improved; the nanometer copper oxide has the sterilizing and antibiosis effects; the active alumina is strong in moisture absorption, is free from expansion and cracking after the moisture absorption and is high in drying speed; the novel wallpaper is fit for humid environment and can be used for effectively protecting the wall, preventing the wall from being damp and mildewed and improving the living environment.

Description

A kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating

Technical field

The present invention relates to wallpaper technical field, particularly relate to a kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating.

Background technology

Wallpaper has another name called wallpaper, because of it, to have color various, pattern enriches, the advantage such as luxurious style, safety and environmental protection, easy construction, affordable is applied more and more extensive in house ornamentation, common wallpaper is greatly using the material such as pure paper, non-woven fabrics as base material, at its surface-coated resin slurry, make through operations such as high temperature plasticizing, printing embossing.

Modal coating paste is mainly made up of polyvinyl chloride resin and filler in the market, although this coated material has the advantages such as attractive and durable waterproof, but its poor air permeability, and containing organic solvent, long-time use can pollute room air, along with the raising of people's environmental consciousness, require also more and more higher to the feature of environmental protection of wallpaper, this needs to use new coated material to replace polyvinyl chloride resin undoubtedly.In recent years market emerges the water-base resin coated material of a collection of environmental protection, although this kind of material is not containing volatile organic solvent, but its ventilation property, plasticization temperature, additional functional and with the stickiness of base material etc. in still Shortcomings.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating.

The present invention is achieved by the following technical solutions:

A kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating, this wallpaper is made up after super-dry, plasticizing, embossing of non-woven fabrics base material and the coating paste being coated on substrate surface, and described coating paste is made up of the raw material of following weight part: composite water soluble Emulsion acrylic resin 80-100, polylactic acid slice 8-10, vinyl two stearic amide 0.1-0.2, Reactive alumina 4-5, nano cupric oxide 0.1-0.2, silane coupling agent kh5500.1-0.2.

Described coating paste preparation method is:

(1) activated alumina-polylactic acid porous fiber preparation: first polylactic acid slice, the two stearic amide of vinyl, Reactive alumina, nano cupric oxide, silane coupling agent kh550 are carried out melt-spinning after being uniformly mixed, making length is 50-100 μm, and diameter is the porous staple fibre of 30-50 μm;

(2) activated alumina-polylactic acid porous fiber is dropped in composite water soluble Emulsion acrylic resin, add other leftover materials after being uniformly mixed 30-50min, strong stirring mixing 4-5h, leave standstill after placing 30-40min subsequently and get final product.

Described composite water soluble Emulsion acrylic resin is made up of the raw material of following weight part: nano silicon 0.5-0.8, cellulose acetate 4-5, N, dinethylformamide 12-15, butyl acrylate 18-25, methyl methacrylate 15-20, vinylformic acid 10-15, ammonium persulphate 5-8, emulsifier op-10 2-3, sodium lauryl sulphate 1-3, ammoniacal liquor are appropriate, deionized water 50-60, and preparation method is:

(1) first drop in DMF by cellulose acetate, be stirred to it and dissolve completely, drop in solution subsequently by nano silicon, closed ultrasonic dispersed with stirring 3-4h, the cellulose acetate solution obtaining blending nano silicon is for subsequent use;

(2) emulsifier op-10, sodium lauryl sulphate are dropped in reactor, add the deionized water of 10-15 weight part subsequently, be stirred to after dissolving completely, material prepared by input step (1) and butyl acrylate, methyl methacrylate, vinylformic acid, be warming up to 70-75 DEG C, be uniformly mixed 2-3h, obtain pre-emulsion for subsequent use;

(3) seed emulsion preparation: ammonium persulphate and appropriate ammoniacal liquor are dissolved in the deionized water of surplus, regulator solution pH value is 6.0-7.5, and be heated to 65-75 DEG C, then pre-emulsion prepared by this solution of 2/3 weight part and 1/4 weight part step (2) is got respectively, be added drop-wise in reaction vessel simultaneously, rate of addition is that 45-60 drips/min, stops dripping, obtain seed emulsion when question response system is blue-fluorescence;

(4) gained seed emulsion drips ammonium persulfate solution and the pre-emulsion of residual content again after leaving standstill 15-20min, after dropping terminates under 70-75 DEG C of condition constant temperature 50-60min, be heated to 75-80 DEG C subsequently, strong stirring mixing 1.5-2h under constant temperature, stop subsequently stirring, when emulsion naturally cools to below 50 DEG C, ammoniacal liquor regulator solution pH value is 7.0, subsequent filtration discharging and get final product.

The resin adhesive adopted in the coating paste that wallpaper of the present invention uses is cellulose acetate modification by copolymerization water-borne acrylic resin emulsion, this emulsion property is stablized, not containing chronic volatility toxic compounds such as formaldehyde, the coating formed is smooth flexible, possess water resistant, anti-soil, the function such as antibacterial, than traditional PVC paste material not only plasticization temperature can be low to moderate 120-150 DEG C; Polylactic acid porous fiber containing nano cupric oxide and Reactive alumina more easily disperses in emulsion than micro mist; improve the ventilation property of coating; nano cupric oxide wherein has sterilization antibiotic effect; activated alumina water absorbability is strong, and not swollenly after moisture absorption does not split, again fast dry; this Novel wall paper is applicable in comparatively moistening environment; effectively can protect body of wall, prevent body of wall damp and mouldy, improve living environment.

Embodiment

This embodiment wallpaper is made up after super-dry, plasticizing, embossing of non-woven fabrics base material and the coating paste being coated on substrate surface, and wherein coating paste is made up of the raw material of following weight part: composite water soluble Emulsion acrylic resin 80, polylactic acid slice 8, vinyl two stearic amide 0.1, Reactive alumina 4, nano cupric oxide 0.1, silane coupling agent kh5500.1.

This coating paste preparation method is:

(1) activated alumina polylactic acid porous fiber preparation: first polylactic acid slice, the two stearic amide of vinyl, Reactive alumina, nano cupric oxide, silane coupling agent kh550 are carried out melt-spinning after being uniformly mixed, making length is 50 μm, and diameter is the porous staple fibre of 30 μm;

(2) polylactic acid porous for activated alumina fiber is dropped in composite water soluble Emulsion acrylic resin, add other leftover materials after being uniformly mixed 30min, strong stirring mixing 4h, leave standstill after placing 30min subsequently and get final product.

Wherein composite water soluble Emulsion acrylic resin is made up of the raw material of following weight part: nano silicon 0.5, cellulose acetate 4, N, dinethylformamide 12, butyl acrylate 18, methyl methacrylate 15, vinylformic acid 10, ammonium persulphate 5, polyoxyethylene nonylphenol ether 2, sodium lauryl sulphate 1, ammoniacal liquor are appropriate, deionized water 50, and preparation method is:

(1) first drop in DMF by cellulose acetate, be stirred to it and dissolve completely, drop in solution subsequently by nano silicon, closed ultrasonic dispersed with stirring 3h, the cellulose acetate solution obtaining blending nano silicon is for subsequent use;

(2) polyoxyethylene nonylphenol ether, sodium lauryl sulphate are dropped in reactor, add the deionized water of 10 weight parts subsequently, be stirred to after dissolving completely, material prepared by input step (1) and butyl acrylate, methyl methacrylate, vinylformic acid, be warming up to 70 DEG C, be uniformly mixed 2h, obtain pre-emulsion for subsequent use;

(3) seed emulsion preparation: ammonium persulphate and appropriate ammoniacal liquor are dissolved in the deionized water of surplus, regulator solution pH value is 6.0, and be heated to 65 DEG C, then pre-emulsion prepared by this solution of 2/3 weight part and 1/4 weight part step (2) is got respectively, be added drop-wise in reaction vessel simultaneously, rate of addition is 45/min, stops dripping, obtain seed emulsion when question response system is blue-fluorescence;

(4) gained seed emulsion drips ammonium persulfate solution and the pre-emulsion of residual content again after leaving standstill 15min, after dropping terminates under 70 DEG C of conditions constant temperature 50min, be heated to 75 DEG C subsequently, strong stirring mixing 1.5h under constant temperature, stop subsequently stirring, when emulsion naturally cools to below 50 DEG C, ammoniacal liquor regulator solution pH value is 7.0, subsequent filtration discharging and get final product.

Coating paste is coated in nonwoven fabric base paper surface, control glue spread is 15g/m ², after its drying, plastify embossing under 135 DEG C of conditions, carry out performance test to product according to relevant criterion after cooling forming, test result is:

Moisture regain: 0.32%; Gas permeability: 11.5L/(m ²s); Tensile strength: 3350N/m, bursting strength: 180KPa.

Antibacterial and mouldproof: can 99.2% be reached to streptococcus aureus bacteriostasis rate; Can 99.5% be reached to intestinal bacteria bacteriostasis rate; It is 0 grade to the antibacterial grade of aspergillus niger, chaetomium globosum, green sticky broom bacterium.

Wallpaper prepared by this embodiment meets the regulation of GB18585-2001, the heavy metal antimony, arsenic, barium, cadmium, chromium, lead, mercury, the selenium that prohibit the use not containing national regulation, not containing formaldehyde, not containing vinyl chloride monomer.

Claims (3)

1. the dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating, this wallpaper is made up after super-dry, plasticizing, embossing of non-woven fabrics base material and the coating paste being coated on substrate surface, it is characterized in that, described coating paste is made up of the raw material of following weight part: composite water soluble Emulsion acrylic resin 80-100, polylactic acid slice 8-10, vinyl two stearic amide 0.1-0.2, Reactive alumina 4-5, nano cupric oxide 0.1-0.2, silane coupling agent kh5500.1-0.2.

2. a kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating as claimed in claim 1, it is characterized in that, described coating paste preparation method is:

(1) activated alumina-polylactic acid porous fiber preparation: first polylactic acid slice, the two stearic amide of vinyl, Reactive alumina, nano cupric oxide, silane coupling agent kh550 are carried out melt-spinning after being uniformly mixed, making length is 50-100 μm, and diameter is the porous staple fibre of 30-50 μm;

(2) activated alumina-polylactic acid porous fiber is dropped in composite water soluble Emulsion acrylic resin, add other leftover materials after being uniformly mixed 30-50min, strong stirring mixing 4-5h, leave standstill after placing 30-40min subsequently and get final product.

3. a kind of dehumidifying disinfecting type wallpaper containing modified acrylic resin emulsion coating as claimed in claim 1 or 2, it is characterized in that, described composite water soluble Emulsion acrylic resin is made up of the raw material of following weight part: nano silicon 0.5-0.8, cellulose acetate 4-5, N, dinethylformamide 12-15, butyl acrylate 18-25, methyl methacrylate 15-20, vinylformic acid 10-15, ammonium persulphate 5-8, emulsifier op-10 2-3, sodium lauryl sulphate 1-3, ammoniacal liquor are appropriate, deionized water 50-60, and preparation method is:

(1) first drop in DMF by cellulose acetate, be stirred to it and dissolve completely, drop in solution subsequently by nano silicon, closed ultrasonic dispersed with stirring 3-4h, the cellulose acetate solution obtaining blending nano silicon is for subsequent use;

(2) emulsifier op-10, sodium lauryl sulphate are dropped in reactor, add the deionized water of 10-15 weight part subsequently, be stirred to after dissolving completely, material prepared by input step (1) and butyl acrylate, methyl methacrylate, vinylformic acid, be warming up to 70-75 DEG C, be uniformly mixed 2-3h, obtain pre-emulsion for subsequent use;

(3) seed emulsion preparation: ammonium persulphate and appropriate ammoniacal liquor are dissolved in the deionized water of surplus, regulator solution pH value is 6.0-7.5, and be heated to 65-75 DEG C, then pre-emulsion prepared by this solution of 2/3 weight part and 1/4 weight part step (2) is got respectively, be added drop-wise in reaction vessel simultaneously, rate of addition is that 45-60 drips/min, stops dripping, obtain seed emulsion when question response system is blue-fluorescence;

(4) gained seed emulsion drips ammonium persulfate solution and the pre-emulsion of residual content again after leaving standstill 15-20min, after dropping terminates under 70-75 DEG C of condition constant temperature 50-60min, be heated to 75-80 DEG C subsequently, strong stirring mixing 1.5-2h under constant temperature, stop subsequently stirring, when emulsion naturally cools to below 50 DEG C, ammoniacal liquor regulator solution pH value is 7.0, subsequent filtration discharging and get final product.