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Functional composite memory material and preparation method and application thereof

A memory material and function technology, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc., can solve the problems of environmental protection hazards of medical waste, and achieve the effect of full degradation

Active Publication Date: 2012-11-14
湖北安达康医用新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current preparation process of low-temperature thermoplastic materials, another important component is introduced, which is a non-degradable polymer, so that medical waste poses a potential hazard to environmental protection.

Method used

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  • Functional composite memory material and preparation method and application thereof
  • Functional composite memory material and preparation method and application thereof
  • Functional composite memory material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Prepare functional composite memory materials according to the formula in Table 3 below:

[0041] Table Three

[0042]

[0043] The preparation method is as follows:

[0044] 1) Granulation

[0045] The raw materials are blended according to the ratio of formula A in Table 3 and pelletized by a twin-screw extruder to obtain pellets A; in addition, the raw materials are blended according to the ratio of formula B in Table 3 and pelletized by a twin-screw extruder. Obtain pellet B; the working parameters of the twin-screw extruder are as follows:

[0046] Screw rpm

1 heating section ℃

2 heating section ℃

3 heating section ℃

4 heating section ℃

20

65

75

85

90

[0047] 2) Board making

[0048] 2.1) Such as figure 2 As shown, the pellets B obtained by the method in step 1) are plasticized and melted into the middle of rolls 5 and 6 in a four-roll calender for calendering and forming. The gap between rolls 5 and 6 is adjusted to 2.34mm, and the particles Material ...

Embodiment 2

[0056] Prepare functional composite memory materials according to the formula in Table 5 below:

[0057] Table 5

[0058]

[0059] In the preparation method, except for the difference in the ratio of raw materials, the thickness of the plate and the irradiation dose, the other processes are basically the same as in Example 1.

[0060] Put the functional composite memory material obtained in this example into a constant temperature water tank, set the temperature to 65-72°C, keep it for 3-5 minutes, wait until the functional composite memory material is completely softened and become transparent, and stretched to 10 times its original length. Maintain stress and cool to room temperature. Then put it in a constant temperature water tank, keep it for more than 10 minutes, and the deformation will recover 95%.

Embodiment 3

[0062] Prepare functional composite memory materials according to the formula in Table 6 below:

[0063] Table 6

[0064]

[0065] In the preparation method, except for the difference in the ratio of raw materials, the thickness of the plate and the irradiation dose, the other processes are basically the same as in Example 1.

[0066] Put the functional composite memory material obtained in this example into a constant temperature water tank, set the temperature to 65-72°C, keep it for 3-5 minutes, wait until the functional composite memory material is completely softened and become transparent, and stretched to 10 times its original length. Maintain stress and cool to room temperature. Then put it in a constant temperature water tank, keep it for more than 10 minutes, and the deformation recovers 93%.

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Abstract

The invention provides a functional composite memory material, which is a plate-shaped material formed by covering surface layers (1) and a core base material (2), wherein the covering surface layers (1) cover two sides of the core base material (2); each covering surface layer (1) is prepared from polycaprolactone, triallyl isocyanurate and a lubricating agent in a weight ratio of (70-100): (2.5-10): (0-2); the core base material (2) is prepared from polycaprolactone, triallyl isocyanurate and the lubricating agent in a weight ratio of (80-100): (0.3-8): (0-2); and the materials are subjected to radiation treatment and the radiation dosage is 50-400 kGy. According to the functional composite memory material disclosed by the invention, the mechanical property meets clinical requirements and the functional composite memory material can be sufficiently degraded. The invention further provides a preparation method and application of the functional composite memory material.

Description

Technical field [0001] The invention relates to a functional composite memory material and its preparation method and application. Background technique [0002] When using low-temperature thermoplastic materials in clinical medicine, put the low-temperature thermoplastic material in a constant temperature water tank, set the temperature above the melting point of the low-temperature thermoplastic material, and keep it for a certain period of time. The low-temperature thermoplastic material is completely softened and becomes transparent. After shaping, keep the stress, cool to room temperature, freeze the stress to complete the shaping, and have a certain mechanical strength. Due to the excellent properties of low-temperature thermoplastic materials, they are widely used in orthopedic external fixation, functional stents for rehabilitation patients, radiotherapy positioning films and other medical fields; currently, there are deficiencies due to the non-degradable polymers added i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/16B32B27/20B32B27/36C08L67/04C08K5/3492C08K5/20C08J3/28C08J3/24B29C47/92B29C43/24B29C43/58B29B9/06A61L31/10A61L31/06A61L31/14B29C48/92
Inventor 姚建中王立君
Owner 湖北安达康医用新材料有限公司