Search

CN-121471644-B - Heat insulation foam material with photo-induced temperature-sensitive response, preparation method and application thereof

CN121471644BCN 121471644 BCN121471644 BCN 121471644BCN-121471644-B

Abstract

The application relates to the technical field of heat-insulating foam, in particular to a heat-insulating foam material with photo-induced temperature-sensitive response, a preparation method and application thereof, wherein the heat-insulating foam material comprises PMI foam with photo-thermal conversion function, a first initiator and N-isopropyl acrylamide; the heat-insulating foam is prepared by a method comprising the following steps of soaking PMI foam with a photo-thermal conversion function in a solvent for pretreatment, then adding the PMI foam into a solution containing N-isopropyl acrylamide and a first initiator for grafting, and drying to obtain a heat-insulating foam material, wherein the solvent is one or more than two of N-pentane, N-hexane, acetone, ethyl acetate, methylene dichloride and tetrahydrofuran, and the heat-insulating foam material can solve the problem that the traditional heat-insulating material lacks intelligent regulation and control capability, realize active and dynamic regulation of heat-insulating performance, thereby better adapting to different environmental conditions and improving the energy efficiency and applicability of a heat-insulating system.

Inventors

  • LI KEDI
  • XU KEXIN
  • XU SHIYU

Assignees

  • 浙江中科恒泰新材料科技有限公司

Dates

Publication Date
20260508
Application Date
20260109

Claims (9)

  1. 1. A heat insulation foam material with photo-induced temperature-sensitive response comprises PMI foam with photo-thermal conversion function, a first initiator and N-isopropyl acrylamide; The heat insulation foam is prepared by a method comprising the following steps: The PMI foam with the photo-thermal conversion function is soaked in a solvent for pretreatment, then added into a solution containing N-isopropyl acrylamide and a first initiator for grafting, and the heat insulation foam material is obtained after drying; the solvent is one or more than two selected from n-pentane, n-hexane, acetone, ethyl acetate, dichloromethane and tetrahydrofuran; the PMI foam with the photothermal conversion function is prepared by a method comprising the following steps: Mixing methacrylic acid, methacrylonitrile, a second initiator, a foaming agent, a cross-linking agent and a photothermal conversion nano material to obtain a mixed solution; polymerizing and foaming the mixed solution to obtain a PMI heat insulation material with photo-thermal function conversion; Wherein the mass ratio of the methacrylic acid to the methacrylonitrile to the second initiator to the foaming agent to the crosslinking agent to the photothermal conversion nanomaterial is=40-70:30-50:0.1-3:1-20:0.1-5:0.1-1.
  2. 2. The insulating foam of claim 1, wherein the first initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptonitrile, azobisisobutyrimidine hydrochloride, potassium persulfate, ammonium persulfate, and benzoyl peroxide.
  3. 3. The insulating foam of claim 1, wherein the grafted temperature is 30-80 ℃, and/or The grafting time is 6-12h, and/or Drying at 80-100deg.C, and/or The drying time is 12-36h.
  4. 4. The heat insulation foam material according to claim 1, wherein the mass ratio of the first initiator to the N-isopropyl acrylamide of the PMI foam with the photo-thermal conversion function is 30-60:0.1-3:10-30.
  5. 5. The insulating foam of claim 1, wherein the second initiator is selected from one or both of t-butyl peroxybenzoate, azobisisobutyronitrile, dibenzoyl peroxide lauroyl peroxide, t-butyl peroxybenzoate, t-butyl peroxy 2-ethylhexanoate, and bis (4-t-butylcyclohexyl) peroxydicarbonate, and/or The foaming agent is one or more selected from isopropanol, glycerol, isobutanol, tertiary butanol, n-heptane, methyl ethyl ketone, urea and tertiary butyl methyl ether, and/or The photo-thermal conversion nano material is one or more than two of graphene quantum dots, tiCT x nano sheets, nbCT x nano sheets, lead sulfide quantum dots and lead selenide quantum dots.
  6. 6. A method of making an insulating foam material having a photo-thermo-sensitive response, comprising: The PMI foam with the photo-thermal conversion function is soaked in a solvent for pretreatment, then added into a solution containing N-isopropyl acrylamide and a first initiator for grafting, and the heat insulation foam material is obtained after drying; the solvent is one or more than two selected from n-pentane, n-hexane, acetone, ethyl acetate, dichloromethane and tetrahydrofuran; Mixing methacrylic acid, methacrylonitrile, a second initiator, a foaming agent, a cross-linking agent and a photothermal conversion nano material to obtain a mixed solution; polymerizing and foaming the mixed solution to obtain a PMI heat insulation material with photo-thermal function conversion; the mass ratio of the methacrylic acid to the methacrylonitrile to the second initiator to the foaming agent to the crosslinking agent to the photothermal conversion nanomaterial is (40-70:30-50:0.1-3:1-20:0.1-5:0.1-1).
  7. 7. The method of claim 6, wherein the grafting temperature is 30-80 ℃, and/or The grafting time is 6-12h, and/or Drying at 80-100deg.C, and/or Drying time of 12-36h, and/or The PMI foam with the photo-thermal conversion function comprises a first initiator and N-isopropyl acrylamide in a mass ratio of 30-60:0.1-3:10-30.
  8. 8. The process according to claim 6, wherein the second initiator is selected from one or both of t-butyl peroxybenzoate, azobisisobutyronitrile, dibenzoyl peroxide, dibenzoyl peroxylauroyl, t-butyl peroxybenzoate, t-butyl peroxy2-ethylhexanoate and bis (4-t-butylcyclohexyl) peroxydicarbonate, and/or The foaming agent is one or more selected from isopropanol, glycerol, isobutanol, tertiary butanol, n-heptane, methyl ethyl ketone, urea and tertiary butyl methyl ether, and/or The photo-thermal conversion nano material is one or more than two of graphene quantum dots, tiCT x nano sheets, nbCT x nano sheets, lead sulfide quantum dots and lead selenide quantum dots.
  9. 9. Use of the insulating foam material of any one of claims 1-5 in the field of building energy conservation, in the field of marine or aerospace.

Description

Heat insulation foam material with photo-induced temperature-sensitive response, preparation method and application thereof Technical Field The application relates to the technical field of heat-insulating foam, in particular to a heat-insulating foam material with photo-induced temperature-sensitive response, a preparation method and application thereof. Background In the field of heat insulation materials, along with continuous upgrading of requirements of industries such as building energy conservation, high-end equipment manufacturing and the like for heat management intelligence and precision, the limitations of the traditional passive heat insulation materials are increasingly remarkable because the traditional passive heat insulation materials do not have environment perception and performance self-adaption capabilities. On one hand, in a building scene, illumination and temperature fluctuation are extremely large, a traditional material cannot dynamically adjust the heat insulation effect according to a real-time environment, and on the other hand, in the field of high-end equipment such as aerospace, new energy and the like, the thermal load change is severe in the running process of equipment, and a passive material is difficult to quickly respond to the thermal management requirement, so that the thermal runaway risk or the low energy utilization efficiency is extremely easy to cause. Therefore, the industry urgently needs an innovative material capable of automatically adapting to external environment changes and realizing dynamic regulation and control of heat insulation performance so as to fill the blank of the traditional technology in the aspect of intelligent heat management, and the related power-assisted field advances to the high-efficiency and intelligent direction. Disclosure of Invention Based on the technical problems in the prior art, the application provides a heat-insulating foam material with photo-thermo-sensitive response, a preparation method and application thereof, wherein the heat-insulating foam material is sensitive to photo-thermo-sensitive response and has excellent performance. The specific technical scheme of the application is as follows: The application provides a heat-insulating foam material with photo-induced temperature-sensitive response, which comprises the following raw materials of PMI foam with photo-thermal conversion function, a first initiator and N-isopropyl acrylamide; The heat insulation foam is prepared by a method comprising the following steps: The PMI foam with the photo-thermal conversion function is soaked in a solvent for pretreatment, then added into a solution containing N-isopropyl acrylamide and a first initiator for grafting, and the heat insulation foam material is obtained after drying; the solvent is one or more selected from n-pentane, n-hexane, acetone, ethyl acetate, dichloromethane and tetrahydrofuran. Preferably, for the above-described heat insulating foam, wherein the first initiator is selected from one or two or more of azobisisobutyronitrile, azobisisoheptonitrile, azobisisobutyrimidine hydrochloride, potassium persulfate, ammonium persulfate, and benzoyl peroxide. Preferably, for the insulating foam described above, wherein the grafted temperature is from 30 to 80 ℃, and/or The grafting time is 6-12h, and/or Drying at 80-100deg.C, and/or The drying time is 12-36h. Preferably, for the heat insulation foam material, the mass ratio of the PMI foam with the photo-thermal conversion function to the first initiator to the N-isopropyl acrylamide is 30-60:0.1-3:10-30. Preferably, for the heat insulating foam material according to any one of the above, wherein the PMI foam having a photothermal conversion function comprises methacrylic acid, methacrylonitrile, a second initiator, a foaming agent, a crosslinking agent, and a photothermal conversion nanomaterial. Preferably, for the heat insulation foam material described above, wherein the PMI foam having a photothermal conversion function is prepared by a method comprising the steps of: Mixing methacrylic acid, methacrylonitrile, a second initiator, a foaming agent, a cross-linking agent and a photothermal conversion nano material to obtain a mixed solution; And polymerizing and foaming the mixed solution to obtain the PMI heat insulation material with photo-thermal function conversion. Preferably, for the thermal insulation foam material described above, the mass ratio of the methacrylic acid, the methacrylonitrile, the second initiator, the foaming agent, the crosslinking agent, and the photothermal conversion nanomaterial is=40-70:30-50:0.1-3:1-20:0.1-5:0.1-1. Preferably, for the heat insulating foamed material described above, wherein the second initiator is selected from one or two of t-butyl peroxybenzoate, azobisisobutyronitrile, dibenzoyl peroxide lauroyl peroxide, t-butyl peroxybenzoate, t-butyl peroxy 2-ethylhexanoate and bis (4-t-butylcyclohexyl) peroxydicarbonate, and/or