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CN-122011262-A - Polymer synthetic resin type building curtain wall material and preparation method thereof

CN122011262ACN 122011262 ACN122011262 ACN 122011262ACN-122011262-A

Abstract

The invention relates to the field of building curtain wall materials, in particular to a polymer synthetic resin type building curtain wall material and a preparation method thereof, which are used for solving the problems that the existing building curtain wall material is insufficient in water resistance and poor in anti-aging performance, and is easy to cause the failure of the curtain wall material; the building curtain wall material takes high molecular synthetic resin formed by polymerizing methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, KH-570 silane coupling agent, diene-based polyfluoro monomer and di-hindered amine-based monomer as main raw materials, and modified filler is added into the high molecular synthetic resin, so that the resin can provide excellent mechanical properties and stability under the synergistic effect, thereby playing the roles of enhancing the water resistance and ageing resistance of the building curtain wall material, effectively preventing the performance of the building curtain wall material from being reduced due to ageing in a humid environment or in a long-term use process, prolonging the service life of the curtain wall, and improving the aesthetic property and durability of a building.

Inventors

  • WANG QIUQIN
  • ZHU XUEMEI
  • ZHANG JING
  • CAO BIN
  • HUANG DONGSONG
  • LUO WENYOU
  • WANG ANYU
  • MA TENG

Assignees

  • 广州博为建科工程有限公司

Dates

Publication Date
20260512
Application Date
20260204

Claims (10)

  1. 1. The high polymer synthetic resin type building curtain wall material is characterized by comprising the following components in parts by weight: 35-40 parts of methyl methacrylate, 25-30 parts of butyl acrylate, 10-12 parts of hydroxyethyl methacrylate, 5-9 parts of KH-570 silane coupling agent, 1-9 parts of diene polyfluoro monomer, 0.8-3.6 parts of di-hindered amine group monomer, 18-26 parts of modified filler, 1-5 parts of emulsifier, 2-3 parts of initiator, 1.1-1.5 parts of dispersing agent, 0.7-0.9 part of defoaming agent, 0.3-0.5 part of leveling agent, 0.8-1.2 parts of thickener and 180-200 parts of deionized water; Wherein the diene-based polyfluoro monomer is prepared by the following steps: Step a1, stirring 2, 7-dibromocarbazole, 3- (perfluorooctyl) propyl iodide, potassium carbonate and N, N-dimethylformamide for reaction, cooling a reaction product after the reaction is finished, extracting, washing and drying an extract, vacuum-filtering, rotationally evaporating filtrate, and performing silica gel column chromatography to obtain polyfluoroyl dibromocarbazole; Step a2, stirring and reacting polyfluoroyl dibromocarbazole, p-hydroxybenzaldehyde, palladium acetate, 2-dicyclohexyl phosphorus-2 ',4',6' -triisopropyl biphenyl, cesium carbonate and o-xylene, cooling a reaction product after the reaction is finished, performing vacuum suction filtration, washing and drying filtrate, performing vacuum suction filtration, rotationally evaporating the filtrate, and performing silica gel column chromatography and recrystallization to obtain polyfluoroyl dialdehyde carbazole; and a3, stirring and reacting the polyfluoro dialdehyde carbazole, the methyltriphenyl phosphine bromide, sodium hydride and tetrahydrofuran, pouring a reaction product into distilled water after the reaction is finished, extracting, washing and drying an extract, performing vacuum suction filtration, rotationally evaporating filtrate, and performing silica gel column chromatography to obtain the diene polyfluoro monomer.
  2. 2. The polymeric synthetic resin type building curtain wall material according to claim 1, wherein the 2, 7-dibromocarbazole, 3- (perfluorooctyl) propyl iodide, potassium carbonate and N, N-dimethylformamide in the step a1 are used in an amount ratio of 10mmol:13-15mmol:10-12mmol:40-50mmol:70-80mL.
  3. 3. The polymer synthetic resin type building curtain wall material according to claim 1, wherein the dosage ratio of the polyfluoroyl dibromocarbazole, the parahydroxybenzaldehyde, the palladium acetate, the 2-dicyclohexyl phosphorus-2 ',4',6' -triisopropyl biphenyl, the cesium carbonate and the o-xylene in the step a2 is 10mmol:23-25mmol:0.11-0.13g:0.3-0.5g:25-30mmol:100-120mL.
  4. 4. The polymer synthetic resin type building curtain wall material according to claim 1, wherein the dosage ratio of the polyfluorodialdehyde carbazole, the methyltriphenyl phosphine bromide, the sodium hydride and the tetrahydrofuran in the step a3 is 10mmol:23-25mmol:2.1-2.5g:100-120mL.
  5. 5. The polymeric synthetic resin type building curtain wall material according to claim 1, wherein the di-hindered amine group monomer is prepared by the steps of: Step b1, stirring 2, 7-dibromocarbazole, tetramethyl piperidinol, potassium carbonate and methylene dichloride for reaction, cooling a reaction product after the reaction is finished, performing vacuum suction filtration, washing and drying filtrate, performing vacuum suction filtration, and performing rotary evaporation on the filtrate to obtain di-hindered amine carbazole; And b2, stirring and reacting the di-hindered amine carbazole, the phenothiazine, the triethylamine and the dichloromethane, then dropwise adding the methacryloyl chloride, continuing to stir and react, vacuum-filtering a reaction product after the reaction is finished, washing and drying filtrate, vacuum-filtering, rotationally evaporating the filtrate, and performing silica gel column chromatography to obtain the di-hindered amine monomer.
  6. 6. The polymeric synthetic resin type building curtain wall material according to claim 5, wherein the dosage ratio of 2, 7-dibromocarbazole, tetramethylpiperidinol, potassium carbonate and dichloromethane in the step b1 is 10mmol:20mmol:30-40mmol:60-70mL.
  7. 7. The polymeric synthetic resin type building curtain wall material according to claim 5, wherein the dosage ratio of the di-hindered amine carbazole, phenothiazine, triethylamine, dichloromethane and methacryloyl chloride in the step b2 is 20mmol:0.04-0.06g:25-30mmol:50-60mL:20mmol.
  8. 8. The polymeric synthetic resin type building curtain wall material according to claim 1, wherein the modified filler is prepared by the steps of: Stirring the mixed filler, the silane coupling agent KH-560 and toluene for reaction, then dropwise adding a hydrochloric acid solution for continuous stirring reaction, cooling a reaction product after the reaction is finished, centrifuging, washing and drying a precipitate to obtain the modified filler.
  9. 9. The high polymer synthetic resin type building curtain wall material according to claim 8, wherein the mixing filler, the silane coupling agent KH-560, toluene and the hydrochloric acid solution are used in an amount ratio of 5g to 1.2-3.6g to 50-60mL to 10-12mL, the mixing filler is nano silicon dioxide, nano titanium dioxide, nano zinc oxide and flaky mica powder according to a mass ratio of 4-6:1-2:2-3:1.5-3.5, the average particle size of the nano silicon dioxide is 30nm, the average particle size of the nano titanium dioxide is 50nm, the average particle size of the nano zinc oxide is 80nm, the average particle size of the flaky mica powder is 400 meshes, and the molar concentration of the hydrochloric acid solution is 0.1mol/L.
  10. 10. A method for preparing a polymeric synthetic resin type building curtain wall material according to any one of claims 1 to 9, comprising the steps of: The preparation method comprises the following steps of weighing 35-40 parts of methyl methacrylate, 25-30 parts of butyl acrylate, 10-12 parts of hydroxyethyl methacrylate, 5-9 parts of KH-570 silane coupling agent, 1-9 parts of diene polyfluoro monomer, 0.8-3.6 parts of di-hindered amine monomer, 18-26 parts of modified filler, 1-5 parts of emulsifier, 2-3 parts of initiator, 1.1-1.5 parts of dispersing agent, 0.7-0.9 part of defoamer, 0.3-0.5 part of flatting agent, 0.8-1.2 parts of thickener and 180-200 parts of deionized water according to parts by weight for standby; Adding methyl methacrylate, butyl acrylate, hydroxyethyl methacrylate, KH-570 silane coupling agent, diene-based polyfluoro monomer, di-hindered amine-based monomer and deionized water into a reaction kettle, stirring and reacting for 30-50min under the conditions of 20-25 ℃ and stirring speed of 200-300r/min, then continuously stirring and reacting for 3-5h under the conditions of heating to 80-85 ℃, cooling the reaction product to room temperature after the reaction is finished, and then continuously stirring and reacting for 30-50min by adding modified filler, emulsifier, initiator, dispersing agent, defoaming agent, leveling agent and thickening agent to obtain the high polymer synthetic resin type building curtain wall material.

Description

Polymer synthetic resin type building curtain wall material and preparation method thereof Technical Field The invention relates to the field of building curtain wall materials, in particular to a polymer synthetic resin type building curtain wall material and a preparation method thereof. Background Curtain wall materials are increasingly used in modern construction. The building curtain wall is used as a core enclosure and a decoration structure of a modern building, and is exposed to outdoor complex environments for a long time to bear multiple damage factors such as wind and rain erosion, ultraviolet irradiation and the like, wherein moisture permeation and ultraviolet aging are main reasons for causing the curtain wall material failure. At present, most of the building curtain wall materials on the market adopt traditional synthetic resin (such as common acrylic resin and epoxy resin) as base materials, and the following core technology pain points exist: 1. The traditional resin has the defects that the molecular structure contains a large amount of hydrophilic groups (such as hydroxyl and carboxyl), the traditional resin is easy to swell and hydrolyze after contacting with water for a long time, so that the coating is foamed and falls off, and the protective function is lost; 2. The anti-aging performance is poor, and the common resin molecular chain is easy to break and degrade under the irradiation of strong ultraviolet rays, so that the coating is pulverized, faded and cracked, the decorative effect is affected, and the corrosion of the base material is accelerated. Therefore, development of a polymer synthetic resin type building curtain wall material and a preparation method thereof have important practical significance. Disclosure of Invention In order to overcome the technical problems, the invention aims to provide the polymer synthetic resin type building curtain wall material and the preparation method thereof, which solve the problems that the existing building curtain wall material is insufficient in water resistance and poor in anti-aging performance, is easy to cause the curtain wall material to fail, not only affects the decoration effect, but also accelerates the corrosion of a base material. The aim of the invention can be achieved by the following technical scheme: in a first aspect, the application provides a polymer synthetic resin type building curtain wall material, which comprises the following components in parts by weight: 35-40 parts of methyl methacrylate, 25-30 parts of butyl acrylate, 10-12 parts of hydroxyethyl methacrylate, 5-9 parts of KH-570 silane coupling agent, 1-9 parts of diene polyfluoro monomer, 0.8-3.6 parts of di-hindered amine group monomer, 18-26 parts of modified filler, 1-5 parts of emulsifier, 2-3 parts of initiator, 1.1-1.5 parts of dispersing agent, 0.7-0.9 part of defoaming agent, 0.3-0.5 part of leveling agent, 0.8-1.2 parts of thickener and 180-200 parts of deionized water; Wherein the diene-based polyfluoro monomer is prepared by the following steps: Adding 2, 7-dibromocarbazole, 3- (perfluorooctyl) propyl iodide, potassium carbonate and N, N-dimethylformamide into a three-neck flask with a stirrer and a thermometer, stirring at a temperature of 20-25 ℃ and a stirring rate of 200-300r/min for reacting for 20-30min, heating to 100-110 ℃ for continuously stirring for reacting for 10-15h, cooling the reaction product to room temperature after the reaction is finished, extracting with ethyl acetate for 2-3 times, combining the extracts, washing the extracts with saturated saline solution for 2-3 times, drying with anhydrous sodium sulfate, vacuum suction filtering, rotationally evaporating the filtrate to remove the solvent, and performing silica gel column chromatography by taking a first mixed solvent as an eluent to obtain the polyfluoroyl dibromocarbazole; Step a2, adding polyfluoroyl dibromocarbazole, p-hydroxybenzaldehyde, palladium acetate, 2-dicyclohexyl phosphorus-2 ',4',6' -triisopropylbiphenyl, cesium carbonate and o-xylene into a three-neck flask provided with a stirrer, a thermometer and an air duct, introducing nitrogen for protection, stirring and reacting for 1-2h under the conditions of 25-30 ℃ and stirring speed of 200-300r/min, heating to 120-130 ℃ and continuing stirring and reacting for 8-10h, cooling the reaction product to room temperature after the reaction is finished, performing vacuum suction filtration, sequentially washing the filtrate with distilled water and saturated saline solution for 2-3 times, drying with anhydrous sodium sulfate, performing vacuum suction filtration, rotationally evaporating the filtrate to remove the solvent, performing silica gel column chromatography by using a second mixed solvent as an eluent, and performing recrystallization by using a third mixed solvent to obtain polyfluoroyl dialdehyde carbazole; Step a3, adding polyfluorodialdehyde carbazole, methyltriphenyl phosphine bromide, sodium hydri