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Reversible dynamic macroporous elastomer polymer material and preparation method and applications thereof

An elastomeric polymer and dynamic technology, which is applied in the field of reversible dynamic macroporous elastomeric polymer materials and their preparation, can solve the problem of lack of green environmental protection preparation, little exploration of applications, and the inability of macroporous polymers to effectively reversibly switch pore structures, etc. question

Active Publication Date: 2020-03-27
CHENGDU YUPING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] All in all, there is currently a lack of green and environmentally friendly methods for preparing responsive macroporous polymers. The prepared macroporous polymers cannot effectively reversibly switch their pore structures, and related applications are therefore rarely explored.

Method used

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  • Reversible dynamic macroporous elastomer polymer material and preparation method and applications thereof
  • Reversible dynamic macroporous elastomer polymer material and preparation method and applications thereof
  • Reversible dynamic macroporous elastomer polymer material and preparation method and applications thereof

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Embodiment 1

[0097] The preparation method of obtaining the reversible dynamic macroporous polymer by the small molecule polymerization of this embodiment includes:

[0098] Mix 20g of 4-hydroxybutyl acrylate, 0.2g of 1,6-hexanediol diacrylate, 0.1g of azobisisobutyronitrile and 0.2g of poly(4-hydroxybutyl acrylate) , to obtain a viscous polymeric precursor solution. Then it was mixed with 3.1 g of polyvinyl alcohol water containing 1 wt%, and vigorously stirred to obtain an emulsion. The obtained emulsion was cured for 1 day under room temperature, natural light and exposure conditions, and a dynamically reversible macroporous polymer in a solid state was obtained after curing.

[0099] The reversible dynamic macroporous elastomeric polymer material obtained in this embodiment is a transparent material.

Embodiment 2

[0101] The preparation method of obtaining the reversible dynamic macroporous polymer by the small molecule polymerization of this embodiment includes:

[0102] Mix 20g of 4-hydroxybutyl acrylate, 0.2g of 1,6-hexanediol diacrylate, 0.1g of azobisisobutyronitrile and 0.2g of poly(4-hydroxybutyl acrylate) , to obtain a viscous polymeric precursor solution. Then it was mixed with 3.1 g of pure water and vigorously stirred to obtain an emulsion. The resulting emulsion was pre-cured for 15 minutes under sealed conditions at 40°C; then the sample was placed in a desiccator with the open open, and vacuumed at room temperature until a transparent sample was obtained, then the sample was taken out, and the temperature was raised to 40°C for curing for 1 day . A dynamically reversible macroporous polymer in a solid state is obtained after curing.

[0103] The reversible dynamic macroporous elastomeric polymer material obtained in this embodiment is a transparent material.

Embodiment 3

[0105] In this embodiment, the preparation method for preparing a reversible dynamic macroporous elastomeric polymer through a crosslinkable polymer precursor includes:

[0106] A mixture of 10 g of A and 10 g of B was used to obtain a silicone precursor. The silicone precursor and 3 g of an aqueous solution containing 1 wt % polyvinyl alcohol were mixed and stirred for 30 min, and the obtained emulsion was poured on the substrate and cured at room temperature for 6 days to obtain a reversible dynamic macroporous elastomeric polymer material.

[0107] The reversible dynamic macroporous elastomeric polymer material obtained in this embodiment is a transparent material.

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Abstract

The invention discloses a reversible dynamic macroporous elastomer polymer material and a preparation method and applications thereof. A polymerizable precursor (or a crosslinkable polymer precursor)and a template liquid that is insoluble in the precursor are mixed and evenly stirred, and the prepared emulsion is cured to obtain the reversible dynamic macroporous elastomer polymer material. The synthesis technology is simple, green, and environmentally friendly, is easy to perform and popularize, and has a high yield and a low preparation cost. The reversible dynamic macroporous elastomer polymer material has an adjustable reversible multilayer porous structure, has a good convertible sunlight reflection performance, an infrared irradiation performance, a strong liquid storage performance, and adjustable surface roughness, belongs to macroporous polymer materials, and has a wide application prospect in fields such as radiation refrigeration, solar heating, intelligent interface, and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a reversible dynamic macroporous elastomer polymer material and its preparation method and application. Background technique [0002] Macroporous polymers (macroporous polymers, also known as polymer macroporous materials) are a class of materials that use polymers as substrates to form interpenetrating or closed pore structures. The main cavity diameters are above 50 nanometers (according to international IUPAC standard). Macroporous polymers can combine the advantages of macroporous materials and polymer materials. In addition to the large surface area and adjustable pore size of macroporous materials, they also have high mechanical strength, good thermal stability, and good solvent resistance. , easy processing, and low raw material prices have been widely used in catalysis, energy storage, sound insulation, gas separation, water treatment, drug delivery and other f...

Claims

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Application Information

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IPC IPC(8): C08J9/14C08L33/14C08L83/04C08F220/20C08F222/14
CPCC08F220/20C08J9/14C08J9/142C08J2201/0502C08J2333/14C08J2383/04C08J2483/04
Inventor 崔家喜王宏
Owner CHENGDU YUPING TECH CO LTD
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