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Shape memory functional material with gutta percha and method for preparing same

A technology of eucommia gum and functional materials, applied in medical science, prosthesis, etc., can solve the problems of low technological content, no industrial chain, farmers' low enthusiasm for planting, etc., and achieve the effect of promoting development and easy operation

Inactive Publication Date: 2008-10-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experts and scholars concerned about the development of eucommia gum in the industry believe that for a long time, the planting area of ​​eucommia ulmoides in my country is small, the technology content is low, the promotion efforts cannot keep up, and an industrial chain has not been formed, so farmers are not very enthusiastic about planting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Formula: Eucommia gum: 20 parts, butadiene rubber: 60 parts, high-density polyethylene: 20 parts, sulfur-containing accelerator: 2.5 parts, anti-aging agent: 1 part, zinc oxide: 1 part, magnesium oxide: 0.5 parts, peroxide Dicumyl: 2%, sulfur: 3 parts, white carbon black: 10 parts, stearic acid: 5 parts.

[0018] Recipe Notes:

[0019] 1. The introduction of rubber is conducive to the formation of an effective cross-linked elastic network in the vulcanization system.

[0020] 2. The introduction of polyethylene is beneficial to improve the tensile strength of the system.

[0021] 3. The sulfur-containing accelerator can be 2-mercaptobenzothiazole (M), dibenzothiazole disulfide (DM), N-cyclohexyl-2-benzothiazole sulfenamide (CN), bis-pentasulfide tetrasulfide Methylthiuram (TRA), bis-dipentylthiuram hexasulfide (DPTT), etc.

[0022] 4. In order to effectively improve the compatibility of the system, bismalic anhydride, silane coupling agent, etc. can be added.

[002...

Embodiment 2

[0027] Formula: Eucommia gum: 20 parts, rubber: 70 parts, polyethylene: 10 parts, sulfur-containing accelerator: 2.5 parts, anti-aging agent: 1 part, zinc oxide: 1 part, magnesium oxide: 1 part, sulfur: 3 parts, Dicumyl peroxide: 1%, white carbon black: 10 parts, stearic acid: 5 parts.

[0028] The formula description and operating instructions of embodiment 2 are the same as embodiment 1.

[0029] Performance indicators: tear strength 20-40Mpa, elongation at break ≥ 500%, residual deformation rate ≤ 5%, softening point 50-70°C, deformation rate ≥ 150%.

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Abstract

The invention relates to a shape memory functional material containing gutta-percha and a method for making the same. The functional material is technically characterized in that the compositions in mass portion are: 10 to 50 portions of gutta-percha, 10 to 60 portions of rubber, 10 to 30 portions of polyethylene, 0.5 to 3 portions of accelerating agent containing sulfur, 1 to 3 portions of antideteriorant, 1 to 5 portions of zinc oxide, 0 to 2 portions of magnesia, 1 to 5 portions of sulfur, 1 to 3 percent of dicumyl peroxide, 10 to 70 portions of siliceous reinforcing agent and 1 to 10 portions of stearine. The invention provides the shape memory functional material containing gutta-percha and the method for making the same and can be applied to produce the products such as an orthopedic external fixation material, a prosthetic limb sleeve, a sports protection tool and a health beauty appliance. A medical gutta-percha plate replaces plaster to serve as the orthopedic external fixation material because the gutta-percha plate is sanitary, light and convenient and radiotransparent X, has convenient and simple operation, high quality and low price, and is more popular compared with other imported macromolecule materials for replacing plaster; the shape memory functional material can be made into a film stuck with the metal perfectly because the material has good radar wave-transparent performance, thereby synthesizing a radar wave-transparent material for sealing a pore radar waveguide antenna and contributing to the development of the war industry.

Description

technical field [0001] The invention relates to a shape memory functional material containing Eucommia gum and a preparation method thereof. Using eucommia gum as the basic raw material, the material with shape memory function was prepared by blending modification. Background technique [0002] Eucommia is a deciduous tree of Eucommiaceae, also known as silk cotton wood. Up to 10 to 20 meters high. The bark is used as medicine, and the Chinese patent medicine with Eucommia as the main raw material is well-known in Southeast Asian countries, Hong Kong and Macao; the leaves can be made into health tea and exported to Japan, and Eucommia gum can also be extracted. In the 1980s, Chinese scientists extracted natural gum from Eucommia ulmoides, and found that the resulting product was very similar to gutta-percha (trans-1,4-polyisoprene) in performance and the same chemical structure, so it is also called Chinese gum. Gutta gum. Experts and scholars concerned about the develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K5/47B29C35/02A61L27/40A61L27/50
Inventor 岳红林春玲杨青芳郭云珠
Owner NORTHWESTERN POLYTECHNICAL UNIV
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