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Two-component pad printing silicone rubber and preparation method thereof

A two-component, silicone technology, applied in the field of pad printing silicone rubber, can solve the problems of short service life, increased use cost, short service life of pad printing silicone rubber, etc., achieves long service life, strong resistance to permanent deformation, improved performance effect

Inactive Publication Date: 2021-06-04
HUNAN KOSEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing pad printing silicone rubber has a short service life, especially when it is used for printing on curved surfaces or substrate materials with large arcs, its service life is even shorter, which greatly increases the cost of use

Method used

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  • Two-component pad printing silicone rubber and preparation method thereof
  • Two-component pad printing silicone rubber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0096] According to a second embodiment of the present invention, there is provided a method for preparing a two-component pad printing silica gel or a method for preparing a two-component pad printing silica gel as described in the first embodiment, the method comprising the following steps:

[0097] 1) Preparation of component A: Mix polyvinyl siloxane, coupling agent, fumed silica, and ultra-short glass fiber in proportion. Then heat up and knead, add platinum catalyst after cooling. Finally, component A is obtained after grinding and filtering.

[0098] 2) Preparation of component B: Mix polyvinyl siloxane, MQ silicone resin, hydrogen-containing siloxane, and inhibitor in proportion, and filter to obtain component B.

[0099] 3) Preparation of two-component pad printing silica gel: Mix components A and B in proportion and react to obtain a two-component pad printing silica gel.

[0100] Wherein, the polyvinyl siloxane is one of the polyvinyl siloxanes having at least 2 t...

Embodiment 1

[0128] The specific surface area of ​​100g is 300m 2 / g of fumed silica, 13g of hexamethyldisilazane, and 2g of water were added to a reaction kettle filled with nitrogen, and reacted at 180°C for 2h. Then cool to room temperature and vacuumize for 2 hours to remove unreacted substances and small molecular substances, then heat to 120°C and dry for 1 hour to obtain hydrophobically modified fumed silica I.

Embodiment 2

[0130] The specific surface area of ​​100g is 300m 2 / g of fumed silica, 13g of hexamethyldisilazane, 3g of aluminate coupling agent, and 2g of water were added to a reaction kettle filled with nitrogen, and reacted at 180°C for 2h. Then cool to room temperature and vacuumize for 2 hours to remove unreacted substances and small molecular substances, then heat to 120°C and dry for 1 hour to obtain hydrophobically modified fumed silica II.

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Abstract

The invention provides two-component pad printing silicone rubber and a preparation method thereof; compared with existing pad printing silicone rubber, the two-component pad printing silicone rubber has the advantages that the solvent corrosion resistance of the silicone rubber is improved, the fatigue damage of the silicone rubber is reduced, the permanent deformation of the silicone rubber is reduced, the service life of the pad printing silicone rubber is prolonged, and the use cost is reduced. The method for preparing the two-component pad printing silicone rubber is simple and easy to operate, the adopted raw materials are simple and easy to obtain, and the two-component pad printing silicone rubber is suitable for large-scale industrial application. The economic benefit can be greatly improved and the use cost can be greatly reduced.

Description

technical field [0001] The invention relates to a pad printing silicone rubber, in particular to a two-component pad printing silicone rubber and a preparation method thereof, belonging to the technical field of pad printing silicone rubber production and preparation. Background technique [0002] Pad printing silicone rubber, a printing method of silicone rubber. Mainly ink is used to print text, graphics and images on the surface of silicone products through pad printing, and is now becoming an important special printing. Pad printing, also known as curved surface printing, is widely used in toys, auto parts, televisions, mobile phone screens, electronic parts, dials and other trademarks and surface pattern printing. The pad printing rubber head made of silicone rubber is used to accurately print various patterns and characters. Pad printing on the plane, concave-convex plane and concave-convex surface of metal, plastic, ceramics, glass, leather and other products. For e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K9/06C08K9/04C08K7/26C08K7/14
CPCC08L83/04C08L2205/025C08L2205/035C08K9/06C08K7/26C08K7/14C08K9/04
Inventor 欧阳光华刘立瑶祝蓓万如意
Owner HUNAN KOSEN NEW MATERIAL
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