Search

CN-122011619-A - Fireproof high-strength plastic floor material and production process thereof

CN122011619ACN 122011619 ACN122011619 ACN 122011619ACN-122011619-A

Abstract

The invention relates to the technical field of floor materials, in particular to a fireproof high-strength plastic floor material and a production process thereof. The fireproof high-strength plastic floor material comprises, by weight, 45-65 parts of matrix resin, 20-30 parts of composite filler, 10-12 parts of acetyl tributyl citrate, 6-8 parts of calcium-zinc composite stabilizer, 6-9 parts of aluminum hypophosphite, 3-5 parts of nano silicon dioxide, 2-3 parts of maleic anhydride grafted POE, 1-2 parts of oxidized polyethylene wax, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite filler consists of surface modified aluminum hydroxide, a composite layered silicate nano composite material and zinc borate coated calcium carbonate. The fireproof high-strength plastic floor material provided by the invention has the advantages that the flame retardance of the plastic floor material is improved, and the strength, toughness, tear resistance, wear resistance and dimensional stability of the material are improved.

Inventors

  • XIAO YAO
  • MENG BIN
  • BI WENPENG
  • WANG GUANJIE

Assignees

  • 安徽蓝艺新型建材有限公司

Dates

Publication Date
20260512
Application Date
20260227

Claims (10)

  1. 1. The fireproof high-strength plastic floor material is characterized by comprising, by weight, 45-65 parts of matrix resin, 20-30 parts of composite filler, 10-12 parts of acetyl tributyl citrate, 6-8 parts of calcium-zinc composite stabilizer, 6-9 parts of aluminum hypophosphite, 3-5 parts of nano silicon dioxide, 2-3 parts of maleic anhydride grafted POE, 1-2 parts of oxidized polyethylene wax, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite filler consists of surface modified aluminum hydroxide, a composite layered silicate nano composite material and zinc borate coated calcium carbonate, and the matrix resin consists of polyvinyl chloride and ethylene-vinyl acetate copolymer in a weight ratio of 3.5-5:1.
  2. 2. The fireproof high-strength plastic floor material according to claim 1, wherein the preparation method of the surface modified aluminum hydroxide comprises the steps of preheating aluminum hydroxide powder to 70-85 ℃, spraying a silane coupling agent KH-570 solution diluted by absolute ethyl alcohol in an atomization mode under high-speed stirring, controlling the reaction temperature to 85-90 ℃ for 15-25 minutes, and then cooling and discharging to obtain the surface modified aluminum hydroxide.
  3. 3. The fireproof high-strength plastic floor material according to claim 2, wherein the addition amount of the silane coupling agent KH-570 is 1.0% -1.5% of the weight of the aluminum hydroxide powder.
  4. 4. The fireproof high-strength plastic flooring material according to claim 1, wherein the composite layered silicate nanocomposite comprises organized montmorillonite and nano sepiolite in a weight ratio of 1:1.8-2.2.
  5. 5. The fireproof high-strength plastic floor material according to claim 1, wherein the preparation method of the zinc borate coated calcium carbonate comprises the following steps: A1. Dispersing, namely mixing calcium carbonate, deionized water and a sodium polyacrylate dispersing agent, and performing ultrasonic dispersion to obtain a suspension A; A2. preparing a reaction solution, namely preparing a mixed aqueous solution B of a zinc source and a boron source; A3. coating reaction, namely dropwise adding the mixed aqueous solution B into the suspension A at 55-65 ℃ under the condition of continuous stirring, preserving heat and reacting for 1.5-2.5 hours after the dropwise adding is finished, and regulating the pH value of the system to 8.0-9.0; A4. And (3) post-treatment, namely carrying out solid-liquid separation after the reaction is finished, washing the obtained solid, drying the solid at 100-110 ℃ for 10-14 hours, and sieving the solid to obtain the zinc borate coated calcium carbonate.
  6. 6. The fireproof high-strength plastic floor material according to claim 5, wherein the weight ratio of the calcium carbonate, the deionized water and the sodium polyacrylate is 20:180-220:0.1-0.3.
  7. 7. The fireproof high-strength plastic floor material according to claim 5, wherein the weight ratio of the calcium carbonate to the zinc source to the boron source is 100:13-18:11-16.
  8. 8. The fireproof high-strength plastic floor material according to claim 1, wherein the antioxidant is antioxidant 1010, and the ultraviolet absorber is ultraviolet absorber UV-326.
  9. 9. A process for producing a fireproof high-strength plastic flooring material according to any one of claims 1 to 8, comprising the steps of: s1, raw material pretreatment, namely respectively preparing surface modified aluminum hydroxide, a compound layered silicate nanocomposite and zinc borate coated calcium carbonate; S2, premixing filler, namely, blending the surface modified aluminum hydroxide, the compound layered silicate nano composite material and the zinc borate coated calcium carbonate to obtain a composite filler, and premixing the composite filler, aluminum hypophosphite and nano silicon dioxide in a high-speed mixer for 10-25 minutes at 60-80 ℃ to obtain a premixed filler; S3, mixing main materials, namely adding polyvinyl chloride, an ethylene-vinyl acetate copolymer, a calcium-zinc composite stabilizer, an antioxidant and an ultraviolet absorber into a high-speed mixer, heating to 95-105 ℃ and stirring for 5-8 minutes, cooling to 75-85 ℃, adding acetyl tributyl citrate and maleic anhydride grafted POE, stirring for 3-5 minutes, adding the pre-mixed filler obtained in the step S2, stirring at a high speed until the material temperature reaches 110-115 ℃, adding oxidized polyethylene wax, stirring for 2-3 minutes, and cooling to below 45 ℃ to obtain a premix; And S4, melt blending and granulating, namely feeding the premix into a parallel co-rotating double-screw extruder, and obtaining the fireproof high-strength plastic floor material through melt blending, extrusion, cooling and granulating.
  10. 10. The process for producing the fireproof high-strength plastic floor material according to claim 9, wherein in the step S4, the process parameters of the parallel co-rotating double screw extruder are that the screw rotating speed is 200-300 rpm, the extrusion temperature is set from a feed inlet to a machine head to be 130-140 ℃, a melting area 155-175 ℃, a mixing area 170-180 ℃, a homogenizing area 175-180 ℃ and the machine head 170-175 ℃.

Description

Fireproof high-strength plastic floor material and production process thereof Technical Field The invention relates to the technical field of floor materials, in particular to a fireproof high-strength plastic floor material and a production process thereof. Background The fireproof high-strength plastic floor material is one kind of building decorating material with special performance and produced with several kinds of material and through specific production process. The core aim is to obviously improve the fire-proof grade and mechanical strength of the material on the basis of ensuring the basic service performance of the plastic floor so as to reduce the risk of fire, prolong the service life of the material and improve the use safety. The existing common fireproof high-strength plastic floor material in the market adopts polyvinyl chloride as matrix resin, and has good processability, chemical stability and certain flame retardance. In order to further improve the fireproof and mechanical properties of the material, inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide and inorganic fillers such as calcium carbonate are generally added to enhance the hardness and rigidity of the material. Meanwhile, various auxiliary agents such as a stabilizer, a plasticizer, an antioxidant and the like can be added to improve the processability and stability of the material. Although inorganic flame retardants such as aluminum hydroxide are added to the existing materials, the dispersibility of the flame retardants in the materials is often not ideal enough, and the flame retardant effect is uneven. Moreover, the mechanism of action of a single flame retardant is relatively single, and it is difficult to effectively prevent flame propagation and heat transfer in the face of a complex fire environment. Inorganic fillers used in existing materials, such as calcium carbonate, although increasing the hardness and rigidity of the materials, tend to form interface defects inside the materials due to poor compatibility with the matrix resin, resulting in stress concentration, thereby reducing tear resistance, abrasion resistance and dimensional stability of the materials. In the long-term use process, the defects can be gradually expanded, the problems of cracking, deformation and the like of materials are caused, and the service life and the safety of the plastic floor are seriously influenced. Based on the above, the invention provides a fireproof high-strength plastic floor material and a production process thereof. Disclosure of Invention The invention provides a fireproof high-strength plastic floor material and a production process thereof, which improve the flame retardance of the plastic floor material, improve the strength, toughness, tear resistance, wear resistance and dimensional stability of the material, and simultaneously reduce the loss of mechanical and wear resistance caused by weak interfaces. The technical scheme of the invention is as follows: The invention provides a fireproof high-strength plastic floor material, which comprises, by weight, 45-65 parts of matrix resin, 20-30 parts of composite filler, 10-12 parts of acetyl tributyl citrate, 6-8 parts of calcium-zinc composite stabilizer, 6-9 parts of aluminum hypophosphite, 3-5 parts of nano silicon dioxide, 2-3 parts of maleic anhydride grafted POE, 1-2 parts of oxidized polyethylene wax, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite filler consists of surface modified aluminum hydroxide, a composite layered silicate nano composite material and zinc borate coated calcium carbonate, and the matrix resin consists of polyvinyl chloride and ethylene-vinyl acetate copolymer in a weight ratio of 3.5-5:1. The preparation method of the surface modified aluminum hydroxide comprises the steps of preheating aluminum hydroxide powder to 70-85 ℃, spraying a silane coupling agent KH-570 solution diluted by absolute ethyl alcohol in an atomization mode under high-speed stirring, controlling the reaction temperature to be 85-90 ℃ and continuously stirring for 15-25 minutes, and then cooling and discharging to obtain the surface modified aluminum hydroxide. As a further technical scheme, the addition amount of the silane coupling agent KH-570 is 1.0% -1.5% of the weight of the aluminum hydroxide powder. As a further technical scheme, the compound layered silicate nanocomposite comprises organic montmorillonite and nano sepiolite in a weight ratio of 1:1.8-2.2. As a further technical scheme, the preparation method of the zinc borate coated calcium carbonate comprises the following steps: A1. Dispersing, namely mixing calcium carbonate, deionized water and a sodium polyacrylate dispersing agent, and performing ultrasonic dispersion to obtain a suspension A; A2. preparing a reaction solution, namely preparing a mixed aqueous solution B of a zinc source and a boron source; A3. coating reaction, namely d