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Method for applying, to an inorganic surface, a PVC composition having improved adhesion to surfaces

A composition and inorganic technology, applied in the sealing of engines, chemical instruments and methods, adhesives, etc.

Active Publication Date: 2018-08-03
RESINOPLAST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore thicker layers of PVC cannot be applied while maintaining adhesive properties

Method used

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  • Method for applying, to an inorganic surface, a PVC composition having improved adhesion to surfaces
  • Method for applying, to an inorganic surface, a PVC composition having improved adhesion to surfaces
  • Method for applying, to an inorganic surface, a PVC composition having improved adhesion to surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0179] Description of the peel test (to determine surface adhesion)

[0180] The peel test measures the force (N) required to separate the PVC layer from the substrate (glass or metal plate, preferably steel) supporting the surface.

[0181] The PVC composition is deposited on a surface (glass or metal plate, preferably steel) with a size of 50x10 cm. The assembly is placed in a gradient oven reaching a temperature of 200°C to overmold the surface (glass or sheet metal, preferably steel) with PVC material.

[0182] Peel tests were performed using a LLOYD Instrument detector (Ametek Company). The obtained samples are placed in the tensile testing apparatus, the surface is fixed.

[0183] The test conditions are as follows:

[0184] Crosshead speed: 100mm / mi,

[0185] Maximum crosshead displacement: 80mm

[0186] If the peel force is above 40N, the rupture is said to be cohesive and transfers the excellent adhesion of the composition to the substrate.

Embodiment 1

[0201] Example 1 - PVC composition of the invention

[0202] The PVC composition was prepared using a PVC base (Kwert 65) containing 29% by weight of T8-10 plasticizer, 1.5% by weight of stabilizer (Ca / Zn), 0.5% by weight of costabilizer, 2.9% by weight of 3-(Aminopropyl)triethoxysilane and 1.5% by weight of bis[2-[(2-aminoethyl)amino]ethoxy][2-[(2-aminoethyl)amino]ethoxy base-O](prop-2-oxyl) titanate.

[0203] The glass surface was treated with methyl ethyl ketone at ambient temperature before heating in an oven to 200°C.

[0204] The PVC composition was applied by extrusion (Escuyer 40) under the following conditions:

[0205] - a die temperature of 170°C, with a temperature profile of 160 to 180°C; and

[0206] - The extrusion rate is 35 rpm.

[0207] The adhesion strength measured by performing a peel test on a glass surface is higher than 40N. The measured thermal stability (measured at 200°C) was 30 minutes.

Embodiment 2

[0208] Example 2 - PVC composition of the invention

[0209] The PVC composition was prepared using a PVC base (Kwert 65) containing 29% by weight of T8-10 plasticizer, 1.5% by weight of stabilizer (Ca / Zn), 0.5% by weight of costabilizer, 2.9% by weight of 3-(aminopropyl)triethoxysilane protected by tert-butoxycarbonyl functional group, and 1.5% by weight of bis[2-[(2-aminoethyl)amino]ethoxy][2-[(2 -Aminoethyl)amino]ethoxy-O](propan-2-oxy)titanate.

[0210] The glass surface was treated with methyl ethyl ketone at ambient temperature before heating in an oven to 200°C.

[0211] The PVC composition was applied by extrusion (Escuyer 40) under the following conditions:

[0212] - a die temperature of 170°C, with a temperature profile of 160 to 180°C; and

[0213] - The extrusion rate is 35 rpm.

[0214] On glass surfaces, the adhesion strength measured by performing a peel test is higher than 40N. The measured thermal stability (at 200°C) was 106 minutes.

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Abstract

The present invention relates to a method for applying, to an inorganic surface, a self-adhesive PVC composition which comprises a composition (C) comprising: an optionally protected aminosilane; and- at least one compound selected from a titanium complex, a zirconium complex and an optionally protected isocyanate compound; said method comprising a step of activating said surface, selected from heat treatment, a shot-peening step, a plasma treatment step, cleaning with solvent and a step of silica application.

Description

technical field [0001] The present invention relates to a method for applying PVC compositions (polyvinyl chloride) with improved adhesion to inorganic surfaces. The present invention also relates to PVC compositions (polyvinyl chloride), which are in particular self-adhesive, with improved surface adhesion to surfaces, especially to glass or metal surfaces, such as steel surfaces. The invention relates in particular to the automotive field, and more particularly to the adhesion of PVC seals around side glazing. Background technique [0002] In the automotive sector, the encapsulation technology for side glazing consists in particular of injecting thermoplastic material around the window. In general, the encapsulation of windows using thermoplastic elastomers (TPEs), more particularly PVC, requires a treatment by means of which layers of activator and primer are deposited, especially manually, around the window to be encapsulated in order to ensure the glass surface and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/544C09K3/10C08K7/14B60J10/15C09J127/06C08K5/057C08K5/098C08K5/53C08J5/10
CPCC08K5/057C08K5/098C08K5/53C08K5/544C08K7/14C08J2327/06B29C48/022C08J5/10B29C48/79B29C48/155B29C48/92C08L27/06C08F114/06C08F214/06C08K5/32C08K5/29C08K5/0091C08F14/06
Inventor R·萨拉S·哈利吉V·E·S·杜普雷
Owner RESINOPLAST
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