阅读说明：本技术 一种环保型磁性装修板材的加工工艺 (Processing technology of environment-friendly magnetic decoration board ) 是由 陈家珺 于 2019-11-15 设计创作，主要内容包括：本发明公开了一种环保型磁性装修板材的制备方法,具体制备过程如下：将柔性酚醛树脂加入搅拌釜中,同时向其中加入吐温-80和正戊烷,搅拌均匀后再加入醋酸,搅拌混合1-2min后得到粘稠的浆料,然后将浆料均匀涂布在柔性装饰层的背面,控制涂布厚度为3-4mm,涂布均匀后将磁性固定层黏附在浆料表面,然后将得到的三层复合板材在40℃下发泡固化20-30min,得到环保型磁性装修板材。本发明通过在柔性装饰片材的底面复合一层发泡柔性酚醛树脂层,同时在酚醛树脂层的底面复合一层磁性固定层,由于中间发泡层中含有大量的泡孔,具有缓冲作用,能够实现很好的隔音和保温效果,进而解决了现有柔性装饰板材直接使用一层柔性片材,使得其隔音效果仍有待提高的问题。(The invention discloses a preparation method of an environment-friendly magnetic decoration board, which comprises the following specific preparation processes: adding the flexible phenolic resin into a stirring kettle, adding tween-80 and n-pentane into the stirring kettle, stirring uniformly, adding acetic acid, stirring and mixing for 1-2min to obtain viscous slurry, then uniformly coating the slurry on the back of the flexible decorative layer, controlling the coating thickness to be 3-4mm, uniformly coating, adhering a magnetic fixing layer on the surface of the slurry, and then foaming and curing the obtained three-layer composite board at 40 ℃ for 20-30min to obtain the environment-friendly magnetic decorative board. According to the invention, the foamed flexible phenolic resin layer is compounded on the bottom surface of the flexible decorative sheet, and the magnetic fixing layer is compounded on the bottom surface of the phenolic resin layer, so that the middle foaming layer has a buffering effect due to a large number of foam holes, and good sound insulation and heat preservation effects can be realized, and the problem that the sound insulation effect of the existing flexible decorative sheet is still to be improved due to the fact that the flexible sheet is directly used is solved.)

1. The preparation method of the environment-friendly magnetic decoration board is characterized by comprising the following specific preparation processes:

adding isopropyl glycidyl ether into an ethanol solution, adding ethanolamine into the ethanol solution, stirring the mixture at normal temperature for reaction for 50-60min, and then carrying out reduced pressure distillation to obtain a flexible diluent;

secondly, adding bisphenol A into ethanol, stirring and dissolving, then adding formaldehyde and a flexible diluent, then adjusting the pH value of the solution to 2 with hydrochloric acid, stirring and reacting for 6-7h at normal temperature, and then carrying out reduced pressure distillation to obtain flexible bisphenol A;

thirdly, adding the flexible bisphenol A prepared in the second step into ethanol, stirring and dissolving, then adding formaldehyde and a certain amount of sodium hydroxide, then heating to 90 ℃, carrying out reflux reaction for 2 hours, then cooling to room temperature, adjusting the pH to be neutral, and evaporating until the viscosity of the product is 5000-6000 CP;

and fourthly, adding the flexible phenolic resin prepared in the third step into a stirring kettle, adding tween-80 and n-pentane into the stirring kettle, uniformly stirring, adding acetic acid, stirring and mixing for 1-2min to obtain viscous slurry, uniformly coating the slurry on the back of the flexible decorative layer, controlling the coating thickness to be 3-4mm, uniformly coating, adhering a magnetic fixing layer on the surface of the slurry, and foaming and curing the obtained three-layer composite board at 40 ℃ for 20-30min to obtain the environment-friendly magnetic decorative board.

2. The method for preparing an environment-friendly magnetic decorative plate as claimed in claim 1, wherein in the first step, isopropyl glycidyl ether and ethanolamine are prepared in an amount of 1: 1, and mixing.

3. The method for preparing an environment-friendly magnetic decorative plate as claimed in claim 1, wherein in the second step, the ratio of bisphenol a to the flexible diluent and formaldehyde is 1: 2: 2, and mixing.

4. The method for preparing an environment-friendly magnetic decoration board as claimed in claim 1, wherein the flexible decoration layer is prepared by the following steps: and uniformly mixing the polyamino inorganic powder and the pigment, adding water, stirring and mixing to form a suspension, then adding the phosphate acrylic emulsion, uniformly stirring to form slurry, then pouring the slurry into a mold, curing and demolding to obtain the flexible decorative layer.

5. The method for preparing the environment-friendly magnetic decoration board as claimed in claim 4, wherein the phosphate-based acrylic emulsion is prepared by the steps of ① weighing a certain amount of phytic acid and water, adding into a reaction vessel, stirring for dissolution, adding crotyl alcohol and p-methoxyphenol, heating to 85-90 ℃ for reflux reaction for 3-4h, reducing the temperature to room temperature, then carrying out reduced pressure distillation to obtain a phosphate-based unsaturated monomer, ② adding the phosphate-based unsaturated monomer prepared in the step ①, acrylic acid and water into the reaction vessel, then adding ammonium persulfate and dodecyl mercaptan into the reaction vessel, heating to 90 ℃ for reflux reaction for 30-40min, then adding acrylamide, heating to 110-120 ℃ for reflux reaction for 3-4h, and then carrying out reduced pressure vacuum pumping for 30 min.

6. The method for preparing an environment-friendly magnetic finishing board as claimed in claim 5, wherein the ratio of the phytic acid to the crotyl alcohol is 1: 1, and mixing.

7. The method for preparing the environment-friendly magnetic decorative plate as claimed in claim 5, wherein 0.23-0.25g of acrylamide, 2.12-2.23g of phosphate group unsaturated monomer, 0.11-0.12g of ammonium persulfate and 0.04g of dodecyl mercaptan are added into each gram of acrylic acid.

8. The method for preparing the environment-friendly magnetic decoration board as claimed in claim 4, wherein the specific preparation process of the polyamino inorganic powder is as follows:

step 1: adding p-hydroxyacetophenone and diethyl ether into a reaction kettle simultaneously, adding triethylamine into the reaction kettle simultaneously, heating to 50 ℃, dropwise adding silicon chloride into the reaction kettle, controlling the dropwise adding to be complete within 1h, stirring at constant temperature for reaction for 3-4h after the dropwise adding is complete, then adding epoxy chloropropane into the reaction kettle, keeping the temperature unchanged, carrying out reflux reaction for 2-3h, heating to 105 ℃, carrying out reflux reaction for 1h, then cooling to 70 ℃, adding benzene into the reaction kettle, precipitating out, and then carrying out suction filtration to obtain p-siloxy quaternary ammonium acetophenone;

step 2: adding boric acid into water, heating to 100 ℃, stirring for dissolving, refluxing, adding ethanolamine after the boric acid is completely dissolved, refluxing for 18 hours, cooling to room temperature, filtering, washing and drying to obtain amino boric acid ester;

and step 3: adding silicone-oxygen quaternary ammonium acetophenone into water, stirring and dissolving, then adding 30% formaldehyde solution and diethanol amine into a reaction container, adjusting the pH value of the reaction solution to be 2 by using 0.1mol/L hydrochloric acid solution, then stirring and reacting at normal temperature for 4-5h, then heating to 120 ℃, adding amino boric acid ester into the reaction solution, stirring and reacting for 12h, then reducing the temperature to room temperature, and carrying out reduced pressure distillation to obtain a solid substance which is a polyamino siloxane modifier;

and 4, step 4: and (3) adding the polyamino siloxane modifier prepared in the step (3) into water, stirring and dissolving, then adding inorganic powder into the mixture, stirring and reacting for 2-3h at the temperature of 75-80 ℃, and then filtering to obtain the polyamino inorganic powder.

9. The method for preparing the environment-friendly magnetic decoration board as claimed in claim 8, wherein the ratio of the amount of the p-hydroxyacetophenone, the silicon chloride and the epichlorohydrin in step 1 is 1: 1: 3.1, and 8.7-8.9mol of triethylamine is added to each mol of silicon chloride.

10. The method for preparing an environment-friendly magnetic finishing board as claimed in claim 8, wherein the boric acid and ethanolamine are prepared in the amount of 1: 2, and mixing.

Technical Field

The invention belongs to the field of decoration board processing, and relates to an environment-friendly magnetic decoration board and a processing technology thereof.

Background

The pleasing to the eye of wall body in the fitment process, durability and feature of environmental protection are the problem of considering first, current wall body fitment panel is usually direct with the decorative board complex on the wall body surface, it is troublesome to change when fitment again, the utility model patent that patent application number is CN207363176U discloses a flexible decorative sheet of wall with magnetism, this fitment panel sets up magnetic coating or fixed magnetic strip through the bottom surface of flexible decorative sheet body, realize quick installation and change fitment panel, but when exempting from coating magnetic paint in time, the unable direct reuse of magnetic material of flexible decorative sheet bottom surface after the change, when direct use magnetic strip bonding, magnetic strip surface adhesion thing is clear complicated. Meanwhile, the existing flexible decorative plate directly uses a layer of flexible sheet, and the flexible sheet has no porous structure, so that the sound insulation effect of the flexible decorative plate is still to be improved.

Disclosure of Invention

The invention aims to provide a preparation method of an environment-friendly magnetic decoration plate, which is characterized in that a foamed flexible phenolic resin layer is compounded on the bottom surface of a flexible decoration sheet, and a magnetic fixing layer is compounded on the bottom surface of the phenolic resin layer.

The purpose of the invention can be realized by the following technical scheme:

a preparation method of an environment-friendly magnetic decoration plate comprises the following specific preparation processes:

adding isopropyl glycidyl ether into an ethanol solution, adding ethanolamine into the ethanol solution, stirring the mixture at normal temperature for reaction for 50-60min, and then carrying out reduced pressure distillation to obtain a flexible diluent; wherein isopropyl glycidyl ether and ethanolamine are prepared in the amount of substances of 1: 1, amino in ethanolamine can react with epoxy group in isopropyl glycidyl ether, so that the prepared flexible diluent contains amino and long-chain flexible ether bonds;

secondly, adding bisphenol A into ethanol, stirring and dissolving, then adjusting the pH value of the solution to 2 by hydrochloric acid, then adding formaldehyde and a flexible diluent, stirring and reacting for 6-7h at normal temperature, and then carrying out reduced pressure distillation to obtain flexible bisphenol A; wherein the ratio of bisphenol A to the flexible diluent to formaldehyde is 1: 2: 2, mixing; the hydrogen at the ortho positions of two phenolic hydroxyl groups of bisphenol A is more active, and meanwhile, the amino group in the flexible diluent contains a hydrogen atom which can perform aminomethylation reaction with the hydrogen at the ortho position of the phenolic hydroxyl group of bisphenol A under the action of formaldehyde, and the ratio of the bisphenol A to the flexible diluent to the formaldehyde according to the mass is 1: 2: 2, bisphenol A contains four ortho hydrogens, wherein two ortho hydrogens can be subjected to aminomethylation reaction, the remaining two ortho hydrogens are introduced into the reacted flexible bisphenol A, and thus, bisphenol A molecules contain two long-chain flexible ether bonds, and the flexibility of the bisphenol A molecules is improved;

thirdly, adding the flexible bisphenol A prepared in the second step into ethanol, stirring and dissolving, then adding formaldehyde and a certain amount of sodium hydroxide, then heating to 90 ℃, carrying out reflux reaction for 2 hours, then cooling to room temperature, adjusting the pH to be neutral, and evaporating until the viscosity of the product is 5000-6000 CP; because the molecules of the flexible bisphenol A contain two ortho-position hydrogens, the flexible bisphenol A can react with formaldehyde under an alkaline condition, and the flexible phenolic resin liquid is prepared by formaldehyde crosslinking; the ratio of the flexible bisphenol A to formaldehyde in terms of the amount of substances is 1: 1.6-1.7, and simultaneously adding 36-41g of sodium hydroxide into each mol of flexible bisphenol A;

fourthly, adding the flexible phenolic resin prepared in the third step into a stirring kettle, adding tween-80 and n-pentane into the stirring kettle, uniformly stirring, adding acetic acid, stirring and mixing for 1-2min to obtain viscous slurry, uniformly coating the slurry on the back of the flexible decorative layer, controlling the coating thickness to be 3-4mm, uniformly coating, adhering a magnetic fixing layer on the surface of the slurry, and foaming and curing the obtained three-layer composite board at 40 ℃ for 20-30min to obtain an environment-friendly magnetic decorative board; wherein the mass ratio of the flexible phenolic resin to the tween-80 to the n-pentane to the acetic acid is 100: 7-8: 16-18: 5-6; because a large number of flexible groups are introduced into the prepared flexible phenolic resin, the prepared phenolic resin layer has higher toughness and elasticity, and meanwhile, because the layer is prepared by foaming, the layer has a porous structure, and the sound absorption and heat insulation performance of the layer is improved;

the preparation process of the flexible decorative layer is as follows: uniformly mixing polyamino inorganic powder and pigment, adding water, stirring and mixing to form a suspension, then adding phosphate acrylic emulsion, uniformly stirring to form slurry, then pouring the slurry into a mold, curing and demolding to obtain a flexible decorative layer; wherein the polyamino inorganic powder, the pigment and the phosphate acrylic emulsion are mixed according to the mass ratio of 100: 2.3-2.8: adding 25.1-27.6; the inorganic powder has certain adsorption performance and can adsorb formaldehyde, the surfaces of the polyamino inorganic powder and the phosphate group acrylic acid emulsion contain a large amount of amino, the amino can react with formaldehyde to generate imino, so that the surface of the prepared decorative layer can adsorb the formaldehyde through physical action and chemical action, the decorative layer has high adsorption performance, and the decorative layer almost consists of the phosphate group acrylic acid emulsion and the polyamino inorganic powder, and the phosphate group acrylic acid emulsion and the polyamino inorganic powder have high formaldehyde adsorption performance, so that the whole decorative layer has the performance of adsorbing the formaldehyde; the phosphoric acid group acrylic emulsion is chelated with metal ions contained in the decorative layer, so that the oxidation performance of the decorative layer can be effectively prevented from being reduced;

① adding a certain amount of phytic acid and water into a reaction container, stirring and dissolving, adding crotyl alcohol and p-methoxyphenol, heating to 85-90 ℃, carrying out reflux reaction for 3-4h, reducing the temperature to room temperature, carrying out reduced pressure distillation to obtain a phosphate unsaturated monomer, mixing phytic acid and crotyl alcohol according to the ratio of the amounts of the substances being 1: 1, wherein due to the fact that the phytic acid contains a large amount of phosphate groups, the phytic acid can react with hydroxyl groups in the crotyl alcohol at high temperature to generate phosphate groups, due to the fact that the content of the crotyl alcohol added is small, the phytic acid still contains a large amount of phosphate groups after reaction, the prepared product contains a large amount of phosphate groups and phosphate groups, ② adding the phosphate unsaturated monomer, acrylic acid and water prepared in the step ① into the reaction container at the same time, then adding ammonium persulfate and dodecyl mercaptan into the reaction container, heating to 90 ℃, carrying out reflux reaction for 30-40min, then adding acrylamide into the reaction container, heating to 110-120 ℃, carrying out reflux reaction for 3-4h, then carrying out vacuum pumping for 30min to obtain a high-23 g of phosphate ion, adding 0.04g of acrylic acid ions into the acrylic acid emulsion, and adding 0.12g of acrylamide to prevent the acrylic acid from damaging the epoxy group in the epoxy amine oxide contained in the acrylic acid, and the acrylic acid, the acrylic acid contained in the acrylic acid, the acrylic acid contained in the acrylic acid is carried out the reaction, the epoxy amine oxide contained in the acrylic acid, the acrylic acid is carried out the reaction, the epoxy amine oxide is carried out the reaction, the reaction is carried out the reaction, the reaction;

the specific preparation process of the polyamino inorganic powder comprises the following steps:

step 1: adding p-hydroxyacetophenone and diethyl ether into a reaction kettle simultaneously, adding triethylamine into the reaction kettle simultaneously, heating to 50 ℃, dropwise adding silicon chloride into the reaction kettle, controlling the dropwise adding to be complete within 1h, stirring at constant temperature for reaction for 3-4h after the dropwise adding is complete, then adding epoxy chloropropane into the reaction kettle, keeping the temperature unchanged, carrying out reflux reaction for 2-3h, heating to 105 ℃, carrying out reflux reaction for 1h, then cooling to 70 ℃, adding benzene into the reaction kettle, precipitating out, and then carrying out suction filtration to obtain p-siloxy quaternary ammonium acetophenone, wherein the reaction structural formula is shown as follows; wherein the mass ratio of the p-hydroxyacetophenone, the silicon chloride and the epichlorohydrin is 1: 1: 3.1, and 8.7-8.9mol of triethylamine is added into each mol of silicon chloride, the silicon chloride reacts with phenolic hydroxyl in p-hydroxyacetophenone to generate hydrochloric acid, the hydrochloric acid is adsorbed by the triethylamine, and the ratio of the amounts of the hydroxy acetophenone to the silicon chloride is 1: 1, one chlorine in the silicon chloride reacts with phenolic hydroxyl in p-hydroxyacetophenone, the silicon chloride after the reaction has three residual chlorines, which can react with epoxy chloropropane, three alkyl chlorines are introduced into the product after the reaction, and the three alkyl chlorines can react with triethylamine in the solution at high temperature to generate ammonium chloride, so that four alkoxy bonds are introduced into the prepared p-siloxane quaternary ammonium acetophenone, and three quaternary ammonium groups are introduced, the water solubility of the p-siloxane quaternary ammonium acetophenone can be improved through the action of the quaternary ammonium groups, and the prepared product can be quickly dissolved in water;

step 2: adding boric acid into water, heating to 100 ℃, stirring for dissolving, refluxing, adding ethanolamine after the boric acid is completely dissolved, refluxing for 18 hours, cooling to room temperature, filtering, washing and drying to obtain amino boric acid ester; wherein the boric acid and the ethanolamine are prepared into a mixture according to the mass ratio of 1: 2, boric acid contains three boric acid groups, and the boric acid can react with alcoholic hydroxyl in ethanolamine, and the boric acid and the ethanolamine are prepared into a mixture according to the mass ratio of 1: 2, further reacting two acid groups in the boric acid with ethanolamine, wherein the other boric acid group does not participate in the reaction;

and step 3: adding the silicone quaternary ammonium acetophenone into water, stirring and dissolving, then adding 30% formaldehyde solution and diethanol amine into a reaction container, adjusting the pH value of the reaction solution to be 2 by using 0.1mol/L hydrochloric acid solution, then stirring and reacting at normal temperature for 4-5h, then heating to 120 ℃, adding amino boric acid ester into the reaction solution, stirring and reacting for 12h, then reducing the temperature to room temperature, and then carrying out reduced pressure distillation to obtain a solid substance which is a polyamino siloxane modifier, wherein the reaction structural formula is as follows, wherein the ratio of the amount of the silicone quaternary ammonium acetophenone, the amount of the formaldehyde, the amount of the diethanol amine and the amino boric acid ester is 1: 1: 1: 2, mixing; the ortho-position of carbonyl in the siloxane quaternary ammonium acetophenone contains active hydrogen, the active hydrogen can perform aminomethylation reaction with amino in diethanol amine under the action of formaldehyde, two alcoholic hydroxyl groups are introduced into a product after the reaction, and the prepared amino boric acid ester contains a boric acid group and can react with the two alcoholic hydroxyl groups, so that two amino groups are introduced into the two alcoholic hydroxyl groups at two sides in the prepared polyamino siloxane modifier, and the prepared product contains four amino groups;

and 4, step 4: adding the polyamino siloxane modifier prepared in the step 3 into water, stirring and dissolving, then adding inorganic powder into the mixture, stirring and reacting for 2-3 hours at the temperature of 75-80 ℃, and then filtering to obtain polyamino inorganic powder; wherein the inorganic powder is mineral powder, the boiler slag is crushed and then screened by a 100-mesh screen, and then the inorganic powder is mixed with the boiler slag according to the mass ratio of 1: 0.3-1, adding 15-17mL of water into each gram of polyamino siloxane modifier, and simultaneously adding 0.38-0.46g of polyamino siloxane modifier into each gram of inorganic powder; the silicon-oxygen bond connected with quaternary ammonium group in the polyamino siloxane modifier is very soluble in water and can be hydrolyzed in water to form Si-OH, meanwhile, the surface of the inorganic powder contains hydroxyl which can react with Si-OH, so that the polyamino siloxane modifier is coated on the surface of the inorganic powder, because the polyamino siloxane modifier contains a large amount of amino, after the polyamino siloxane modifier is coated on the surface of the inorganic powder, a layer of reticular membrane is formed on the surface of the inorganic powder, the surface of the reticular membrane contains a large amount of amino, and because the polyamino siloxane modifier contains three quaternary ammonium salt groups, part of quaternary ammonium salt groups are remained after hydrolysis, so that the surface of the inorganic powder still contains a certain amount of quaternary ammonium salt groups, the prepared inorganic powder contains positive charges, the inorganic powder is uniformly dispersed through positive charge repulsion, and the existence of quaternary ammonium groups enables the inorganic powder to have higher antibacterial performance;

the preparation method of the magnetic fixed layer comprises the following steps: adding 100g of silane coupling agent into 300mL of acetone, stirring and dissolving, adding 50g of carbonyl iron powder, stirring and reacting for 2h at normal temperature, filtering, washing and drying, then adding the dried carbonyl iron powder into 36g of E-44 type epoxy resin, stirring and mixing uniformly, adding 8.3g of diethylenetriamine, stirring and mixing uniformly, then coating on one surface of an aluminum foil layer uniformly, and curing and airing at normal temperature to obtain the magnetic fixed layer.

The invention has the beneficial effects that:

1. according to the invention, the foamed flexible phenolic resin layer is compounded on the bottom surface of the flexible decorative sheet, and the magnetic fixing layer is compounded on the bottom surface of the phenolic resin layer, so that the middle foaming layer has a buffering effect and can realize good sound insulation and heat preservation effects, and the problems that the existing flexible decorative sheet material directly uses one flexible sheet material, and the flexible sheet material has no porous structure, so that the sound insulation effect of the flexible decorative sheet material still needs to be improved are solved.

2. The surface of the magnetic fixed layer prepared by the invention is the aluminum foil layer material, after the aluminum foil layer material is bonded with the phenolic resin layer, the magnetic fixed layer is easy to tear off when the decoration plate is replaced, and after the magnetic fixed layer is torn off, the phenolic resin foam adhered to the surface of the magnetic fixed layer is scraped off, so that the magnetic fixed layer is reused, the cleaning is convenient, and the aluminum foil layer is not required to be additionally processed and prepared.

3. According to the invention, the foam material is prepared between the flexible decorative layer and the magnetic fixing layer through the flexible phenolic resin, the phenolic resin has high acid-base resistance and flame retardant property, but the phenolic resin has poor toughness and is brittle, and the phenolic resin is easy to break under the action of external force.

4. According to the invention, the polyamino inorganic powder with a large amount of amino groups and the phosphate acrylic emulsion with a large amount of amino groups and containing phosphate groups and phosphate groups are directly prepared, the inorganic powder contained in the sheet prepared by two crosslinking polymerization has certain adsorption performance, formaldehyde can be adsorbed by physical adsorption, meanwhile, a large amount of amino groups contained in the sheet can react with formaldehyde to generate imino groups, and further, the physical adsorption and chemical adsorption combination is realized, the high-efficiency formaldehyde adsorption performance is realized, no additional adsorption material is required to be added, and the high-efficiency formaldehyde adsorption performance can be realized by directly combining the inorganic powder and the phosphate acrylic emulsion.

5. The phosphate acrylic emulsion prepared by the invention contains a certain amount of phosphate which can be chelated with metal ions in the decorative layer, so that the metal ions promoting oxidation lose activity after chelation, and simultaneously release hydrogen to destroy peroxide generated in the autoxidation process, thereby effectively preventing the metal ions in the material from promoting the oxidation of acrylic acid and further reducing the performance of the decorative layer.

Detailed Description