Gutta percha shape memory polymer composite material and preparation method thereof

A composite material and technology of eucommia glue, applied in the field of eucommia glue shape memory polymer composite material and its preparation, can solve the problems of poor high temperature resistance, low deformation temperature, etc. The effect of improving the crack strength

Active Publication Date: 2015-07-08
湖北格霖威新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, Eucommia gum itself also has the disadvantages of low deformation temperature and poor high temperature resistance, so it is greatly restricted in use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Eucommia gum shape-memory polymer composite material, in parts by weight, is compounded with the following raw materials: 54 parts of polyethylene, 29 parts of Eucommia gum, 13 parts of inorganic reinforcing material, 3 parts of crosslinking agent, and 1 part of antioxidant. The preparation method is to weigh the above-mentioned materials according to the proportion, add them to a high-speed mixer and stir evenly, then add the mixed raw materials to an open mill and mix them at a temperature range of 145-155°C for 10-15 minutes; The finished product is put into a pressure forming machine for hot press forming, the temperature is controlled at 155-165°C, and finally the formed product is cooled. The resulting product has a tensile strength of 16.3MPa, a bending strength of 30.2MPa, an impact strength of 8.2KJ / ㎡, a Vicat softening temperature of 114.6°C, a thermal deformation rate of 250%, and a thermal stimulation temperature of 69.2°C.

Embodiment 2

[0021] A eucommia gum shape-memory polymer composite material, which is prepared by compounding the following raw materials in parts by weight: 54 parts of low-density polyethylene, 48 parts of natural eucommia gum, 23 parts of inorganic reinforcing materials, 4.5 parts of crosslinking agent, Antioxidant 1.5 parts. The resulting product has a tensile strength of 14.6MPa, a bending strength of 21.6MPa, an impact strength of 6.8KJ / ㎡, a Vicat softening temperature of 101.5°C, a thermal deformation rate of 190%, and a thermal stimulation temperature of 58.6°C.

Embodiment 3

[0023] A eucommia gum shape-memory polymer composite material, which is compounded by the following raw materials in parts by weight: 42 parts of high-density polyethylene, 36 parts of eucommia gum, 16 parts of inorganic reinforcing materials, 3 parts of crosslinking agent, 1 part of oxidizing agent. The resulting product has a tensile strength of 15.2MPa, a bending strength of 24.7MPa, an impact strength of 7.4KJ / ㎡, a Vicat softening temperature of 108.9°C, a thermal deformation rate of 193%, and a thermal stimulation temperature of 63.3°C.

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Abstract

The invention discloses a gutta percha shape memory polymer composite material and a preparation method thereof. The composite material is compounded from the following raw materials in parts by weight: 33-54 parts of polyethylene, 27-48 parts of gutta percha, 9-23 parts of an inorganic reinforcing material, 1.5-4.5 parts of a cross-linking agent and 0.5-1.5 parts of an antioxidant. When in preparation, all the raw materials are weighed according to the mixture ratio and uniformly mixed and stirred, then a mixture is subjected to mixing in an open mill at 135-165 DEG C for 10-15min, then hot-press forming is performed in a pressure forming machine, the temperature is controlled at 145-175 DEG C, and cooling is finally performed for preparation. The obtained composite material has the advantages of good resistance to high temperature, relatively great deformation and relatively easy figuration, and the field of use is expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a shape-memory polymer composite material of Eucommia gum and a preparation method thereof. Background technique [0002] Eucommia gum high elastic body has a very special duality of rubber and plastic, and can be used as thermoplastic material, thermoelastic material and rubber elastic material. Over the past few years, through the continuous efforts of many researchers, Eucommia gum has been widely used in many fields such as medical treatment and chemical industry. Among them, Eucommia gum shape memory polymer composite material is widely used in the connection of gas pipelines, various vacuum equipment, chemical and medical equipment and other pipelines due to its large deformation volume, fast deformation speed, and high deformation recovery accuracy. On the other hand, Eucommia gum itself also has the shortcomings of low deformation temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L7/00C08L9/00C08K13/04C08K7/14C08K3/34C08K3/36C08K5/5419
CPCC08L7/00C08L23/06C08L2201/08C08L2207/062C08L2207/066C08K13/04C08K7/14C08K3/34C08K3/36C08K5/5419C08K5/1345C08K5/526
Inventor 郭庆时袁友诚程海
Owner 湖北格霖威新材料科技有限公司
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