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Microwave response shape memory polymer composite material and preparation method thereof

A technology of memory polymers and composite materials, which is applied in the preparation of shape memory polymer composite materials and in the field of shape memory polymer composite materials, can solve problems such as inconvenience, achieve the effect of broadening types and improving thermomechanical properties

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, direct heating may cause inconvenience or other undesirable problems in some special use occasions

Method used

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  • Microwave response shape memory polymer composite material and preparation method thereof
  • Microwave response shape memory polymer composite material and preparation method thereof
  • Microwave response shape memory polymer composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Take 12g of nano-silicon carbide, add it to 120mL of 10% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Take 10 g of dried silicon carbide powder and add it to 100 mL of toluene, heat up to 50°C and stir for 1 h, add 0.3 g of KH550 dropwise, and stir for 2 h. ℃ drying in an oven for 12 hours to obtain modified silicon carbide.

[0034] Take 5 g of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 99% and add it to 100 mL of water, and dissolve it at 98°C for 6 hours to obtain a 5% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 3 with hydrochloric acid solution.

[0035] Disperse 0.5g of modified silicon carbide in 10mL of water, mix it in 100mL of polyvinyl alcohol aqueous solution, add 0.05g of glutaraldehyde and stir for 3 minutes, inject ...

Embodiment 2

[0038] Take 12g of nano-silicon carbide, add it to 120mL of 8% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Take 10 g of dried silicon carbide powder, add it to 100 mL of toluene, raise the temperature to 60°C and stir for 4 h, add 0.1 g of KH560 dropwise, and stir for 4 h. Dry in an oven at 105°C for 12h.

[0039] Take 9g of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 88% and add it to 100mL of water, and dissolve it at 98°C for 6 hours to obtain a 9% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 4 with hydrochloric acid solution.

[0040] Disperse 0.3g of modified silicon carbide in 10mL of water, mix it in 100mL of polyvinyl alcohol aqueous solution, add 0.1g of glutaraldehyde and stir for 3 minutes, inject the mixed solution into a hol...

Embodiment 3

[0043] Take 12g of nano-silicon carbide, add it to 120mL of 5% hydrochloric acid aqueous solution, stir for 24h, wash and filter repeatedly until the filtrate is neutral, and dry at a constant temperature of 120°C. Take 10 g of dried silicon carbide powder, add it to 100 mL of toluene, raise the temperature to 70°C and stir for 1 h, add 0.5 g of KH590 dropwise, and stir for 6 h. Dry in an oven at 105°C for 12h.

[0044] Take 6 g of polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of 88%, add it to 100 mL of water, and dissolve it at 98°C for 6 hours to obtain a 6% aqueous solution of polyvinyl alcohol. After the solution was cooled to room temperature, the pH value of the solution was adjusted to 3 with hydrochloric acid solution.

[0045] Disperse 0.1g of modified silicon carbide in 10mL of water, mix it in 100mL of polyvinyl alcohol aqueous solution, add 0.2g of glutaraldehyde and stir for 3 minutes, inject the mixed solution into a hollo...

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Abstract

The invention discloses a microwave response shape memory polymer composite material and a preparation method thereof. The preparation method comprises the steps: with 90-99wt% glutaraldehyde crosslinked polyvinyl alcohol as a base material and 1-10wt% microwave absorption medium silylated modified nanometer silicon carbide as a filling material, modifying the acidized nanometer silicon carbide by using a silylated coupling agent, then, dispersing the modified nanometer silicon carbide into water, mixing the modified nanometer silicon carbide with a polyvinyl alcohol water solution, and carrying out glutaraldehyde crosslinking reaction to obtain the microwave response shape memory polymer composite material. The composite material disclosed by the invention has shape change and generates a reply effect under the irradiation of a microwave field, and is not needed to be preheated in a reply process.

Description

technical field [0001] The invention relates to a functional polymer material, in particular to a shape memory polymer composite material and a preparation method of the shape memory polymer composite material. Background technique [0002] Shape memory polymers (SMPs) are a class of functional or intelligent polymers that can "memorize" the initial shape and recover under external stimuli after the initial shape is processed into a temporary shape starting shape. [0003] Since the discovery of thermally induced shape memory cross-linked polyethylene in the 1980s, SMPs have become a current research hotspot due to their excellent comprehensive properties and wide range of uses. In recent years, researchers have continued to explore a variety of response driving methods that can cause deformation recovery of SMPs. German Lendlein et al. (A. Lendlein, H. Jiang, O. Junger, R. Langer, Light-induced shape memory polymers, Nature , 2005, 434: 879-882.; H. Jiang, S. Kelch, A. L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K9/06C08K3/34C08K5/07C08J3/24
Inventor 杜海燕白利秀邱丽申迎华
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