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A kind of poss reinforced high mechanical performance silicone rubber and preparation method thereof

A technology for mechanical properties and silicone rubber, applied in the field of high mechanical properties silicone rubber and its preparation, can solve problems such as insufficient mechanical properties, and achieve the effects of good biocompatibility, increased application range and high mechanical strength

Active Publication Date: 2021-05-07
SHANDONG BRANDEN MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of insufficient mechanical properties of ordinary silicone rubber, the invention provides a POSS-enhanced high mechanical performance silicone rubber and a preparation method thereof

Method used

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  • A kind of poss reinforced high mechanical performance silicone rubber and preparation method thereof
  • A kind of poss reinforced high mechanical performance silicone rubber and preparation method thereof
  • A kind of poss reinforced high mechanical performance silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: 5g of hyperbranched POSS (the hyperbranched polymer is polyamide-amine dendritic polymer (PAMAM), the branch chain is 18, the molecular weight is 500000, and the molecular formula is AB 18 , B in the molecular formula is a polyhedral cage-type oligomeric silsesquioxane containing 4 vinyl functional groups, and the link between POSS and hyperbranched polymer is an amide bond), 5g of fumed silica and 100g of 70A hardness Methyl vinyl phenyl silicone rubber is mixed evenly in the internal mixer, and then take the silicone rubber after internal mixing and add 4g of hydrogen-containing silicone oil with an active hydrogen content of 1.5% and 3.5 g of chloroplatinic acid / olefin complex. After all the components are mixed evenly, thin pass three times, and finally the mixed rubber is vulcanized on a flat rubber vulcanizing machine at 170°C for 10 minutes to obtain medical silicone rubber with high mechanical properties.

Embodiment 2

[0032] Example 2: The steps are the same as in Example 1, but the difference is that the hyperbranched POSS: the hyperbranched polymer is a polyamide dendritic polymer (polyamide), with 120 branches, a molecular weight of 1,000,000, and a molecular formula of AB 120、 B in the molecular formula is polyhedral cage oligomeric silsesquioxane containing one vinyl functional group, the link between POSS and hyperbranched polymer is an ester bond, and the mass of hyperbranched POSS is 10g.

Embodiment 3

[0033]Example 3: The steps are the same as in Example 1, but the difference is that the hyperbranched POSS: the hyperbranched polymer is a polylysine dendritic polymer (PLL), with 4 branches and a molecular weight of 5000. Molecular formula is AB 4、 B in the molecular formula is a polyhedral cage-type oligomeric silsesquioxane containing 8 vinyl functional groups, the link between POSS and the hyperbranched polymer is a urethane bond, and the mass of the hyperbranched POSS is 0.01 g.

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Abstract

The invention belongs to the technical field of polymer materials, and relates to a POSS-reinforced silicone rubber with high mechanical performance and a preparation method thereof. The silicone rubber includes the following raw materials: silicone rubber, white carbon black, hyperbranched POSS, hydrogen-containing silicone oil, and platinum catalyst. Among them, the addition of hyperbranched POSS and silica play a synergistic effect on silicone rubber, and increase the crosslinking point of silicone rubber, and the crosslinking method is concentrated crosslinking, which has a significant effect on the mechanical properties of silicone rubber. This POSS-enhanced silicone rubber with high mechanical properties can reduce the risk of broken tubes of thinner silicone catheters (peripheral central venous catheters, lacrimal drainage tubes, lumbar drainage tubes, etc.), reduce corresponding complications, and avoid secondary surgical injuries and Medical Dispute.

Description

technical field [0001] The invention relates to a POSS-enhanced high-mechanical-performance silicone rubber and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Silicone rubber is one of the most important products among silicone materials. Silicone rubber is mainly composed of linear polysiloxane (or base rubber, raw rubber), reinforcing filler, crosslinking agent, catalyst and other additives. Mix all the components uniformly and process it into rubber compound. After cross-linking (or vulcanization, curing) under certain conditions, the rubber compound will transform from the initial high-viscosity plastic state to an elastic state, that is, a three-dimensional Vulcanizate with network cross-linked structure. [0003] As we all know, silicone rubber has many unique and excellent properties, such as heat resistance, cold resistance, aging resistance (ozone aging resistance, thermal oxygen aging resistance,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K3/36C08J3/24
CPCC08J3/243C08J2383/07C08J2483/04C08J2483/05C08K3/36
Inventor 张海军袁坤山鲁手涛王如蒙徐海荣刘黎明曹文瑞尹玉霞周超侯文博刘光
Owner SHANDONG BRANDEN MEDICAL DEVICE
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