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CN-121973508-A - Fireproof and antibacterial diatom ooze decorative plate and preparation method thereof

CN121973508ACN 121973508 ACN121973508 ACN 121973508ACN-121973508-A

Abstract

The invention relates to the technical field of diatom ooze decorative plates, in particular to a fireproof and antibacterial diatom ooze decorative plate and a preparation method thereof, wherein the fireproof and antibacterial ooze decorative plate comprises a base material layer, a decorative layer and a fireproof and antibacterial coating which are sequentially arranged from bottom to top, and raw materials of the fireproof and antibacterial coating comprise 3-6 parts of nano silicon dioxide, 6-10 parts of methacryloyloxyethyl hexadecyl dimethyl ammonium chloride, 20-30 parts of 2-hydroxyethyl methacrylate phosphate, 10-20 parts of [ (6-oxo-6H-dibenzo [ C, E ] [1,2] oxaphosphorin-6-yl) methyl ] succinic acid bis (2-hydroxyethyl) ester, 80-100 parts of polyurethane acrylate resin, 3-5 parts of photoinitiator and 20-40 parts of organic solvent. The fireproof and antibacterial diatom ooze decorative plate and the preparation method thereof provided by the invention are beneficial to not only having excellent decorative effect, but also simultaneously having fireproof performance and antibacterial performance on the premise of ensuring mechanical strength.

Inventors

  • CHEN XIANWEI
  • JIANG QIMING
  • CHEN FANGGEN
  • WANG GANGGANG
  • LIU CHANG

Assignees

  • 佛山石湾鹰牌陶瓷有限公司

Dates

Publication Date
20260505
Application Date
20260115

Claims (9)

  1. 1. The fireproof and antibacterial diatom ooze decorative plate is characterized by comprising a base material layer, a decorative layer and a fireproof and antibacterial coating which are sequentially arranged from bottom to top; According to the mass portion, the raw materials of the substrate layer comprise 45-50 parts of diatom ooze, 30-43 parts of composite flame retardant, 8-10 parts of polyvinyl aldehyde, 3-5 parts of vinyl acetate-ethylene copolymer emulsion, 0.8-1.2 parts of cross-linking agent, 1.5-2.5 parts of silane coupling agent, 0.5-1 part of chopped glass fiber and 18-28 parts of water; the composite flame retardant comprises aluminum hydroxide, ammonium polyphosphate and pentaerythritol; According to the mass portion, the fireproof and antibacterial coating comprises 3-6 portions of nano silicon dioxide, 6-10 portions of methyl acryloyloxyethyl hexadecyl dimethyl ammonium chloride, 20-30 portions of 2-hydroxyethyl methacrylate phosphate, 10-20 portions of [ (6-oxo-6H-dibenzo [ C, E ] [1,2] oxaphosphorinane-6-yl) methyl ] succinic acid bis (2-hydroxyethyl) ester, 80-100 portions of polyurethane acrylate resin, 3-5 portions of photoinitiator and 20-40 portions of organic solvent.
  2. 2. The fireproof and antibacterial diatom ooze decorative plate according to claim 1, wherein the mixing ratio of the aluminum hydroxide, the ammonium polyphosphate and the pentaerythritol in the composite flame retardant is (10-15): (15-20): (5-8) according to the mass ratio.
  3. 3. The fire-resistant and antibacterial diatom ooze decorative panel according to claim 1, wherein the cross-linking agent is glutaraldehyde.
  4. 4. The fire-resistant and antibacterial diatom ooze decorative sheet according to claim 1, wherein the polyurethane acrylate resin is a hexafunctional polyurethane acrylate resin.
  5. 5. The fire-resistant and antibacterial diatom ooze decorative sheet according to claim 1, wherein the silane coupling agent comprises any one of dodecyl trimethyl silane, vinyl trimethoxy silane and gamma-methacryloxypropyl trimethoxy silane.
  6. 6. A fire resistant and antimicrobial diatom ooze decorative panel according to claim 5, wherein said photoinitiator comprises 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide and 1-hydroxycyclohexyl phenyl ketone.
  7. 7. A fire-resistant antimicrobial diatom ooze decorative panel according to claim 1, further comprising an adhesion enhancing coating, said adhesion enhancing coating being located between said decorative layer and said fire-resistant antimicrobial coating; The raw materials of the adhesive force enhancing coating comprise 90-110 parts of bisphenol F type epoxy resin, 2-4 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 30-45 parts of phenolic amine curing agent and 10-30 parts of propylene glycol methyl ether acetate.
  8. 8. A method for preparing a fireproof and antibacterial diatom ooze decorative sheet, which is used for preparing the fireproof and antibacterial diatom ooze decorative sheet according to claim 7, and comprises the following steps: s1, uniformly mixing diatom ooze with formula amount and a composite flame retardant to obtain mixed powder; Adding a silane coupling agent with a formula amount into the mixed powder, and stirring for 30-60 min at a rotation speed of 5000-8000 rpm to obtain pretreated powder; Uniformly stirring the pretreated powder and the formula amount of water, then adding the formula amount of polyvinyl aldehyde and vinyl acetate-ethylene copolymer emulsion, and uniformly mixing to obtain intermediate slurry; adding the formula amount of chopped glass fibers into the intermediate slurry, uniformly mixing, adding the formula amount of cross-linking agent, and uniformly mixing to obtain a molding slurry; S2, uniformly mixing the bisphenol F type epoxy resin, gamma- (2, 3-glycidoxy) propyl trimethoxy silane, a phenolic amine curing agent and propylene glycol methyl ether acetate according to the formula amount to obtain an adhesive force enhancing coating; S3, uniformly mixing nano silicon dioxide, methacryloyloxyethyl hexadecyl dimethyl ammonium chloride, 2-hydroxyethyl methacrylate phosphate, [ (6-oxo-6H-dibenzo [ C, E ] [1,2] oxaphosphorin-6-yl) methyl ] succinic acid bis (2-hydroxyethyl) ester, polyurethane acrylate resin, a photoinitiator and an organic solvent according to the formula amount to obtain the fireproof antibacterial coating; S4, injecting the molding slurry into a mold, and sequentially carrying out hot press molding and demolding to obtain an intermediate plate; hot pressing the wood grain decorating paper on the surface of the base material layer by using a hot press to form a decorating layer; Polishing the upper surface of the decorative layer, then coating an adhesive force enhancing coating, and placing the decorative layer at room temperature until the adhesive force enhancing coating is dried to form an adhesive force enhancing coating; And coating fireproof and antibacterial coating on the surface of the adhesion-enhanced coating, and sequentially drying and UV curing to form the fireproof and antibacterial coating and obtain the fireproof and antibacterial diatom ooze decorative plate.
  9. 9. The method for preparing the fireproof and antibacterial diatom ooze decorative plate according to claim 8, wherein in the step S4, the curing temperature of curing is 60-70 ℃ and the curing time is 24-48 h.

Description

Fireproof and antibacterial diatom ooze decorative plate and preparation method thereof Technical Field The invention relates to the technical field of diatom ooze decorative plates, in particular to a fireproof and antibacterial diatom ooze decorative plate and a preparation method thereof. Background The diatomite decorative board is an environment-friendly indoor decorative board prepared by taking diatomite as a main base material and performing inorganic-organic compounding and hot press molding. The functional characteristics of adsorption, humidity control and air purification brought by the natural microporous structure of diatomite are widely focused in the field of wall decoration. As the application scene extends from the residential space to public buildings such as schools, hospitals and office buildings with higher requirements on environmental sanitation and safety, the market has higher requirements on the plates, and the plates not only need to have mechanical strength to bear certain pressure and impact, but also are not easy to break or deform, and are more expected to have fireproof performance and antibacterial performance at the same time. In order to endow the diatom mud board with fireproof performance and antibacterial performance, the prior art mainly follows the design path of 'functional external addition', and is specifically characterized in that (1) functional finishing paint is coated on the surface of the board. For example, flame retardant and antibacterial agents are added into the surface coating to realize fireproof performance and antibacterial performance, and (2) a separate intermediate functional layer is introduced to specially bear flame retardant and antibacterial components. The above technical means are all aimed at modularly integrating the functions into the product by means of physical superposition. However, such functional layer laminating techniques are limited by the choice of raw material formulation, resulting in limited fire resistance and antimicrobial properties of the diatom ooze decorative panels produced. Meanwhile, a large amount of fillers and opaque components added for realizing functions such as fireproof performance, antibacterial performance and the like in the prior art cause excessively strong covering power of a surface layer and loss of permeability, so that textures and colors of a built-in decorative layer cannot be clearly presented, and a final decorative plate is difficult to realize an excellent decorative effect on the premise of ensuring excellent fireproof performance and antibacterial performance. In conclusion, the diatom ooze decorative plate prepared by the prior art has the technical problems that the fireproof performance and the antibacterial performance are insufficient, and the excellent decorative effect is difficult to achieve. Disclosure of Invention The invention aims to provide a fireproof and antibacterial diatom ooze decorative plate and a preparation method thereof, which are beneficial to not only having excellent decorative effect, but also having fireproof performance and antibacterial performance on the premise of ensuring mechanical strength so as to overcome the defects in the prior art. To achieve the purpose, the invention adopts the following technical scheme: a fireproof and antibacterial diatom ooze decorative plate comprises a base material layer, a decorative layer and a fireproof and antibacterial coating which are sequentially arranged from bottom to top; According to the mass portion, the raw materials of the substrate layer comprise 45-50 parts of diatom ooze, 30-43 parts of composite flame retardant, 8-10 parts of polyvinyl aldehyde, 3-5 parts of vinyl acetate-ethylene copolymer emulsion, 0.8-1.2 parts of cross-linking agent, 1.5-2.5 parts of silane coupling agent, 0.5-1 part of chopped glass fiber and 18-28 parts of water; the composite flame retardant comprises aluminum hydroxide, ammonium polyphosphate and pentaerythritol; According to the mass portion, the fireproof and antibacterial coating comprises 3-6 portions of nano silicon dioxide, 6-10 portions of methyl acryloyloxyethyl hexadecyl dimethyl ammonium chloride, 20-30 portions of 2-hydroxyethyl methacrylate phosphate, 10-20 portions of [ (6-oxo-6H-dibenzo [ C, E ] [1,2] oxaphosphorinane-6-yl) methyl ] succinic acid bis (2-hydroxyethyl) ester, 80-100 portions of polyurethane acrylate resin, 3-5 portions of photoinitiator and 20-40 portions of organic solvent. Further, in the composite flame retardant, the mixing ratio of the aluminum hydroxide to the ammonium polyphosphate to the pentaerythritol is (10-15)/(15-20)/(5-8) according to the mass ratio. Further, the cross-linking agent is glutaraldehyde. Further, the urethane acrylate resin is a hexafunctional urethane acrylate resin. Further, the silane coupling agent includes any one of dodecyl trimethyl silane, vinyl trimethoxy silane and gamma-methacryloxypropyl trimethoxy silane. Furthe