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Fibrous support comprising a silicone coating

An organosilicon, polyorganosiloxane technology, applied in coating, fiber processing, transportation and packaging, etc., can solve problems such as roughness, high friction coefficient, passenger injury, etc., to achieve the effect of good possible performance

Inactive Publication Date: 2009-05-27
BLUESTAR SILICONES FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the application of the above-mentioned amount of silicone composition to the surface of the protective bag resulted in a rough and abrasive surface with a "tacky" feel and a high coefficient of friction
Such surfaces cause many problems during the folding process of the airbag and then during its inflation, leading to difficult or undesired preferential orientation during deployment, excessive friction with parts of the motor vehicle such as side windows, and also head or Risk of injury to occupants whose limbs rub against the deployed airbag

Method used

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  • Fibrous support comprising a silicone coating
  • Fibrous support comprising a silicone coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0161] Example 1 : Preparation of cross-linked emulsion R

[0162] Mentioned in Table 1 are various weight compositions (in g) of crosslinked emulsions:

[0163] Table 1

[0164] CR1 CR2 R3 R4 R5 POS A 27 27 27 27 27 Resin G 27 27 27 27 27 POS B 2.5 2.5 2.5 2.5 2.5 ECH 0.06 0.06 0.06 0.06 0.06 TA1 15 15 15 15 15 TA2 0 2 2 2 2 Filler (E) 0 0 50 25 75 Sorbic acid 0.02 0.02 0.02 0.02 0.02 water 28 28 28 28 28

[0165] CR1 and CR2 are comparative compositions.

[0166] TA1 and sorbic acid were introduced into an IKA laboratory reactor with scraper anchor stirrer and base (cooled by cold water circulation). Resin G was then poured over 170 min with stirring. Next, it takes 150 min to pour POS A in which ECH has been predispersed. An ultra-turrax (IKA) rotor-stator was then added and the emulsion was subjected to shear for 90 min, 20 min at 16000 rpm followed by 70 mi...

Embodiment 2

[0168] Example 2 : Preparation of Catalytic Emulsion C

[0169] The emulsion contained 53% by weight POS A, 28% by weight TA1, 0.45% by weight catalyst and 17.5% by weight water.

Embodiment 3

[0170] Example 3 : Preparation of Coated Fabrics

[0171] The fabric is a 470 dtex warp and weft polyamide fabric with 18 yarns per centimeter. Coated with a silicone inner layer (1) of Rhodorsil TCS 7510 from Rhodia Silicones having 65 g / m 2 surface density. The inner layer (1) has a thickness of 60 μm.

[0172] During the formation of the coating bath prior to application to the fabrics, the amounts of crosslinking and catalytic formulations described in Table 2 were mixed, optionally with dilution water, adjusted for the purpose of controlling the amount of silicone deposited on the fabrics The viscosity and concentration of the bath.

[0173] The coating bath was applied with a No. 3 Meyer rod to the fabric that had been coated with the silicone inner layer. Next, make the coated fabric enter the ventilated heating chamber according to the conditions specified in Table 2.

[0174] Characterization of coated fabrics

[0175] - Wetting: It is first evaluated visual...

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Abstract

The present invention relates to a fibrous support comprising a silicone coating, consisting of at least two successive silicone-type layers. The first layer, that in contact with the fibrous support, is a layer based on an elastomeric silicone composition. The second layer, that in contact with the first layer, is a thin layer obtained by crosslinking an aqueous polyorganosiloxane emulsion crosslinkable by a polyaddition reaction, having a high filler content. The invention also relates to a process for manufacturing such coated fibrous supports, especially inflatable protective bags of the airbag type.

Description

technical field [0001] The present invention relates to fibrous supports comprising a silicone coating consisting of at least two successive layers of the silicone type. The first layer in contact with the fibrous support is a layer based on an elastomeric silicone composition. The second layer in contact with the first layer is a thin layer obtained by crosslinking an aqueous polyorganosiloxane emulsion capable of crosslinking by polyaddition reaction containing a high content of filler. The invention also relates to a method for producing such a coated fibrous carrier, in particular an inflatable protective bag of the air bag type. [0002] The general field of the invention lies in silicone compositions capable of being crosslinked by polyaddition reactions to produce thin-layer elastomers, especially those of the two-component or multi-component type when used as various fibrous supports such as woven ( tissés), knitted (tricotés) or non-woven (non tissés) fiber supports...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/12C09D183/04B60R21/16
CPCB60R2021/23514C09D183/04D06N3/128C08G77/20C08G77/12C08K5/56Y10T428/25Y10T442/20C08L83/00B60R21/16D06M15/643D06N3/12
Inventor F·拉费塞L·迪蒙B·博尔德
Owner BLUESTAR SILICONES FRANCE SAS
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