Addition type facial prosthesis silicone 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

Inactive Publication Date: 2013-05-15
FOURTH MILITARY MEDICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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 on patients, and most foreign prosthetic silicone rubber products cannot be purchased directl...

Method used

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  • Addition type facial prosthesis silicone rubber and preparation method thereof
  • Addition type facial prosthesis silicone rubber and preparation method thereof
  • Addition type facial prosthesis silicone 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 type facial prosthesis silicone rubber and a preparation method thereof. The medical addition type facial prosthesis silicone rubber is characterized in that according to the performance requirements of the prosthesis silicone rubber material, an organic silicon basic polymer synthesized from octamethyl cyclotetrasiloxane or a mixture comprising hexamethylcyclotrisiloxane, the octamethyl cyclotetrasiloxane, decamethylcyclopentasiloxane and the like, and divinyltetramethyldisiloxane by taking tetramethyl ammonium hydroxide as a catalyst is selected; the catalyst, namely a platinum metal complex, a polymerization inhibitor (a compound of butynol and tetramethyl tetravinyl cyclotetrasiloxane) and a cross-linking agent, namely a poly-methyl hydrogen silicone oil polymer are further selected; and modified fumed silica is taken as a filler. The addition type facial prosthesis silicone rubber is prepared from the following raw materials in percentage by weight: 20%-80% of basic polymer, 15%-75% of filler and 5%-15% of cross-linking agent, catalyst and polymerization inhibitor. According to the method, the medical prosthesis silicon rubber with the hardness of 20-45HA, tensile strength of above 6.0MPa and tearing strength of above 18KN/m can be prepared.

Description

[0001] This application is a divisional application of the Chinese patent application whose application date is June 22, 2010, application number 201010206591.X, and invention name "Additional Facial Prosthetic Silicone Rubber and Preparation Method". technical field [0002] 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 [0003] 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 pro...

Claims

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Application Information

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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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