Addition face fake composite silicon rubber and preparation method thereof

An addition-type, silicone rubber technology, applied in the field of addition-type facial prosthetic silicone rubber and its preparation, can solve the problems of difficulty in meeting the urgent needs of patients, insufficient water absorption and solubility, and backwardness

Active Publication Date: 2010-10-20
FOURTH MILITARY MEDICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the relatively backward research on prosthetic silicone rubber materials in China, there is no market-oriented product yet, and the clinical demand mainly depends on imports. However, foreign products are expensive, which increases the financial burden of patients, and most foreign prosthetic silicone rubber products cannot be directly purchased in China. , the purchase cycle is long, it is difficult to meet the urgent needs of the majority of patients
The developed SY series condensation-type prosthetic silicone rubber has good mechanical properties, but there are deficiencies in water absorption and solubility, which have a certain impact on the life of prosthetics that repair some parts of the defect.

Method used

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  • Addition face fake composite silicon rubber and preparation method thereof
  • Addition face fake composite silicon rubber and preparation method thereof
  • Addition face fake composite silicon rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to the base polymer (i.e. vinyl silicone oil) 80wt%; filler 15wt%; crosslinking agent, catalyst and polymerization inhibitor and 5wt% of the preparation of addition type facial prosthetic silicone rubber:

[0035] Preparation of vinyl silicone oil: First, take 75.2 parts by weight of chemically pure octamethylcyclotetrasiloxane and add it into the reactor, raise the temperature to 90°C, and under stirring at less than 0.01Mpa, blow nitrogen into the ring body for 120min to remove the Stop the nitrogen flow after moisture, then add 2.4 parts by weight of chemically pure divinyltetramethyldisiloxane and stir evenly, then add 2.4 parts by weight of analytically pure tetramethylammonium hydroxide, and heat up under stirring React at 100-110°C until the viscosity of the system remains roughly constant (at 1400±10% mm2 / s), stop stirring, and raise the temperature to 150°C at a rate of 5°C / min under normal pressure for 1 hour to destroy tetramethyl base amine hydroxi...

Embodiment 2

[0038] According to 20wt% of base polymer; 75wt% of filler; 5wt% of the sum of crosslinking agent catalyst and polymerization inhibitor to prepare addition-type facial prosthetic silicone rubber:

[0039] Preparation of vinyl silicone oil: First, take 18.8 parts by weight of octamethylcyclotetrasiloxane and add it into the reactor, raise the temperature to 50°C, and pass nitrogen gas at less than 0.01Mpa under stirring for 30 minutes to remove the nitrogen in the ring body. Stop the nitrogen flow after moisture, then add 0.6 parts by weight of divinyltetramethyldisiloxane and stir evenly, then add 0.6 parts by weight of analytically pure tetramethylammonium hydroxide, and heat up to React at 100-110°C until the viscosity of the system remains roughly constant (3700±10%mm2 / s), then raise the temperature to 150°C at a rate of 5°C / min under normal pressure and react for 1 hour to destroy tetramethylammonium hydroxide , and then gradually heated up to 200°C under stirring, and the...

Embodiment 3

[0042] According to 55wt% of base polymer; 30wt% of filler; 15wt% of the sum of crosslinking agent, catalyst and polymerization inhibitor to prepare addition-type facial prosthetic silicone rubber:

[0043] Preparation of vinyl silicone oil: first, take 51.7 parts by weight of a mixture composed of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane and add it to the reactor, and heat up to 95°C, under stirring at less than 0.01Mpa, pass nitrogen gas for 100min to remove moisture in the ring body, stop nitrogen flow, then add 1.65 parts by weight of divinyltetramethyldisiloxane to it and stir evenly, Then add 1.65 parts by weight of analytically pure tetramethylammonium hydroxide, and heat up to 100-110°C for reaction under stirring until the viscosity of the system (21500 ± 10% mm2 / s) is constant. / min heating rate to 150°C for 1 hour to destroy tetramethylammonium hydroxide, then gradually raise the temperature to 200°C under stirring, a...

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Abstract

The invention relates to medical addition face fake composite silicon rubber and preparation method thereof. The invention is characterized in that: octamethylcyclotetrasiloxane or mixture composed of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane or organic silicon base polymer synthesized by taking divinyl tetramethyldisiloxane and tetramethyl ammoniumhydroxide as catalyst is selected according to the performance requirement of fake composite silicon rubber material; catalyst adopts platinum complex, polymerization inhibitor adopts composite of butynol and tetramethyl tetravinylcyclotetrasiloxane, and poly methyl hydrogen silicone oil polymer is taken as cross linking agent; modified gas phase method white carbon is taken as filler; and the addition face fake composite silicon rubber is prepared by the following raw materials by weight percent: 20-80% of base polymer, 15-75% of filler and 5-15% of cross linking agent, catalyst and polymerization inhibitor. The invention can prepare medical fake composite silicon rubber with the hardness of 20-45HA, tensile strength more than 6.0MPa and tearing strength more than 18KN / m.

Description

technical field [0001] The invention belongs to a medical facial soft tissue repair material, and in particular relates to an addition-type facial prosthetic silicone rubber and a preparation method thereof. Background technique [0002] Due to its excellent mechanical and physical properties, chemical stability and good biocompatibility, silicone rubber is internationally recognized as the material of choice for facial soft tissue repair. However, there is currently no commercialized series of prosthetic silicone rubber materials in China, and the clinical demand mainly depends on imports. However, foreign products are expensive, which increases the financial burden of patients, and most foreign prosthetic silicone rubber products cannot be directly purchased in China, and the purchase cycle is relatively short. long, it is difficult to meet the urgent needs of the majority of patients. The new type currently disclosed is an addition-type prosthetic silicone rubber materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/18C08L83/07C08L83/05C08K3/36C08G77/20
Inventor 赵铱民陶云峰韩影方辉韩颖吴念
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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