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CN-121975318-A - Heat insulation material for doors and windows of ultralow energy consumption system and preparation method thereof

CN121975318ACN 121975318 ACN121975318 ACN 121975318ACN-121975318-A

Abstract

The invention discloses a heat insulation material for doors and windows of an ultralow-energy-consumption system and a preparation method thereof, and relates to the technical field of high polymer materials. The heat insulation material for doors and windows of the ultralow energy consumption system at least comprises the following raw materials, by mass, 55-65 parts of PA66 resin, 8-15 parts of thermoplastic polyurethane, 5-10 parts of polyamide imide, 18-25 parts of activated chopped glass fiber, 3-6 parts of modified nano silicon dioxide coated aerogel microbead heat insulation filler, 2-5 parts of melamine cyanurate coated diethyl aluminum phosphinate flame retardant, 1-3 parts of microcapsule expanded graphite flame retardant, 0.3-0.8 part of antioxidant, 0.2-0.5 part of light stabilizer and 0.5-1 part of lubricant. The heat insulation material prepared by the invention has the advantages of ultralow heat conduction, high-efficiency flame retardance, low smoke, no toxicity, high dimensional stability and excellent mechanical property.

Inventors

  • CAI GEN
  • SUN JING
  • ZHU YAO
  • XU GUOBING

Assignees

  • 中绿建江苏建筑节能有限公司

Dates

Publication Date
20260505
Application Date
20260311

Claims (10)

  1. 1. The heat insulation material for the doors and windows of the ultra-low energy consumption system is characterized by at least comprising the following raw materials in parts by mass: 55-65 parts of PA66 resin, 8-15 parts of thermoplastic polyurethane, 5-10 parts of polyamide imide, 18-25 parts of activated chopped glass fiber, 3-6 parts of modified nano silicon dioxide coated aerogel microbead heat insulation filler, 2-5 parts of aluminum diethyl phosphinate flame retardant coated by melamine cyanurate, 1-3 parts of microcapsule expanded graphite flame retardant, 0.3-0.8 part of antioxidant, 0.2-0.5 part of light stabilizer and 0.5-1 part of lubricant.
  2. 2. The heat insulation material for doors and windows of an ultra-low energy consumption system according to claim 1, wherein the preparation method of the aluminum diethyl phosphinate flame retardant coated by melamine cyanurate at least comprises the following preparation steps: Adding cyanuric acid into absolute ethyl alcohol, stirring, adding diethyl aluminum phosphinate powder, dripping aqueous dispersion of melamine, centrifuging, washing and drying after reaction to obtain the melamine cyanurate coated diethyl aluminum phosphinate flame retardant.
  3. 3. The heat insulation material for doors and windows of an ultra-low energy consumption system according to claim 2, wherein the particle size of the aluminum diethyl phosphinate flame retardant coated by melamine cyanurate is 1-20 μm, and the mass ratio of the melamine, the cyanuric acid and the aluminum diethyl phosphinate is 1:0.8-1.2:5-10.
  4. 4. The ultra-low energy consumption system door and window insulation material according to claim 1, wherein the preparation method of the microcapsule expanded graphite flame retardant at least comprises the following preparation steps: mixing the expanded graphite, isophorone diisocyanate and polyether polyol, adding the mixture into an aqueous solution of polyvinyl alcohol for emulsification, then dropwise adding an aqueous solution of diethylenetriamine for reaction, filtering, washing and drying to obtain the microcapsule expanded graphite flame retardant.
  5. 5. The ultra-low energy consumption system door and window insulation material according to claim 4, wherein the particle size of the microcapsule expanded graphite flame retardant is 30-150 μm, and the mass ratio of the expanded graphite, the isophorone diisocyanate, the polyether polyol and the diethylenetriamine is 1:2-3:0.5-1:1-1.5.
  6. 6. The heat insulation material for doors and windows of an ultra-low energy consumption system according to claim 1, wherein the preparation method of the modified nano silica coated aerogel microbead heat insulation filler at least comprises the following preparation steps: Adding nano silicon dioxide into the silane hydrolysate, and dispersing and stirring to obtain modified nano silicon dioxide dispersion liquid; Dispersing aerogel microbeads into absolute ethyl alcohol to obtain an aerogel microbead suspension; and adding the aerogel microbead suspension into the modified nano-silica dispersion, stirring for reaction, and then spray-drying to obtain the modified nano-silica coated aerogel microbead heat-insulating filler.
  7. 7. The ultra-low energy consumption system door and window insulation material according to claim 6, wherein the mass ratio of the nano silica to the aerogel microbeads is 1:0.8-1.5, and the average diameter of the modified nano silica coated aerogel microbead insulation filler is 10-30 μm.
  8. 8. The ultra-low energy consumption system door and window insulation material according to claim 1, wherein the activated chopped glass fibers have a diameter of 10-15 μm and a length of 3-5mm, and the activated chopped glass fibers are obtained by treating chopped glass fibers with a silane coupling agent.
  9. 9. The method for preparing the heat insulation material for doors and windows of an ultra-low energy consumption system according to any one of claims 1 to 8, comprising at least the steps of adding PA66 resin, thermoplastic polyurethane and polyamide imide into a high-speed mixer, and drying to obtain a premix matrix; Adding the premixed matrix, the modified nano silicon dioxide coated aerogel microbead heat insulation filler, the melamine cyanurate coated diethyl phosphinate aluminum flame retardant, the microcapsule expanded graphite flame retardant, the antioxidant, the light stabilizer and the lubricant into a double-screw extruder from a main feeding port, adding the activated chopped glass fibers into the double-screw extruder from a side feeding port, and carrying out melt blending extrusion, bracing, cooling and granulating to obtain the heat insulation material.
  10. 10. The method for preparing the heat insulation material for the doors and windows of the ultra-low energy consumption system according to claim 9, wherein the temperature of the twin-screw extruder is set to be 230-245 ℃, 245-260 ℃, 260-275 ℃, 270-285 ℃, 275-290 ℃ and 280-295 ℃ in the first zone, the second zone, the third zone, the fourth zone, and the fifth zone.

Description

Heat insulation material for doors and windows of ultralow energy consumption system and preparation method thereof Technical Field The invention relates to the technical field of high polymer materials, in particular to a heat insulation material for doors and windows of an ultralow energy consumption system and a preparation method thereof. Background The construction industry is an extremely typical high pollution, high energy industry. The relevant literature shows that the energy consumption in the building field is more than 40.0% of the total global energy consumption, and that more than about half of the energy consumption comes from heat loss of the peripheral structure of the building itself during daily work. Along with the continuous improvement of building energy-saving standards, especially the popularization of passive ultra-low energy consumption buildings, very strict requirements are put forward on the heat preservation and heat insulation performance of doors and windows of the system. The door and window of the system is used as a key part of building energy consumption, and the heat insulation performance of the system directly determines the energy-saving effect of the building. The heat insulation strip is used as a core component for blocking the heat bridge of the aluminum alloy section, and the performance quality of the heat insulation strip is important. At present, the commercial main flow heat insulation strip mostly adopts a reinforcing system of PA66 added with 25% -30% of glass fiber. However, the prior art still has the following defects that firstly, the toughness of a PA66 matrix is insufficient, the PA66 matrix is easy to crack at low temperature, creep is easy to occur after long-term use, the structural stability of doors and windows is affected, secondly, the heat conductivity coefficient of a traditional PA66 heat insulation strip is higher, the extremely heat insulation requirement of the doors and windows with ultra-low energy consumption is difficult to meet, thirdly, the flame retardant property is poor, the flame retardant grade of an unmodified PA66 material is low, molten drops are generated during combustion, the fire spread is easy to occur, and the fire safety requirement of a building cannot be met. Therefore, developing a heat insulation material for doors and windows of an ultralow energy consumption system, which has the advantages of low heat conduction, high flame retardance, high toughness, stable size, controllable cost and industrial production, becomes a technical problem to be solved in the current field. Disclosure of Invention The invention aims to provide a heat insulation material for doors and windows of an ultralow energy consumption system and a preparation method thereof, which solve the following technical problems: The existing heat insulation material for doors and windows of the ultralow energy consumption system has the problems of insufficient heat insulation, poor mechanical property and poor flame retardance. The aim of the invention can be achieved by the following technical scheme: The heat insulation material for the doors and windows of the ultra-low energy consumption system at least comprises the following raw materials in parts by mass: 55-65 parts of PA66 resin, 8-15 parts of thermoplastic polyurethane, 5-10 parts of polyamide imide, 18-25 parts of activated chopped glass fiber, 3-6 parts of modified nano silicon dioxide coated aerogel microbead heat insulation filler, 2-5 parts of aluminum diethyl phosphinate flame retardant coated by melamine cyanurate, 1-3 parts of microcapsule expanded graphite flame retardant, 0.3-0.8 part of antioxidant, 0.2-0.5 part of light stabilizer and 0.5-1 part of lubricant. The preparation method of the melamine cyanurate coated diethyl aluminum phosphinate flame retardant at least comprises the following preparation steps: Adding cyanuric acid into absolute ethyl alcohol, stirring, adding diethyl aluminum phosphinate powder, dripping aqueous dispersion of melamine, centrifuging, washing and drying after reaction to obtain the melamine cyanurate coated diethyl aluminum phosphinate flame retardant. As a further scheme of the invention, the particle size of the melamine cyanurate coated aluminum diethyl phosphinate flame retardant is 1-20 mu m, and the mass ratio of the melamine to the cyanuric acid to the aluminum diethyl phosphinate is 1:0.8-1.2:5-10. The preparation method of the microcapsule expanded graphite flame retardant at least comprises the following preparation steps: mixing the expanded graphite, isophorone diisocyanate and polyether polyol, adding the mixture into an aqueous solution of polyvinyl alcohol for emulsification, then dropwise adding an aqueous solution of diethylenetriamine for reaction, filtering, washing and drying to obtain the microcapsule expanded graphite flame retardant. As a further scheme of the invention, the particle size of the microcapsule expanded graphit