Normal-temperature fast-curing silicone release agent and preparation method thereof

A fast-curing, silicone-based technology for adhesives, film/flake adhesives, coatings, etc., that solves the problems of waste, high heat consumption, unfavorable energy savings and cost control

Active Publication Date: 2018-06-08
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under normal circumstances, the heating temperature of this type of release agent is above 120°C, which consumes a lot of heat during the production process, resulting in great waste, which is not conducive to energy saving and cost control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation of normal temperature quick-curing organosilicon release agent, comprises the following steps, parts by mass:

[0028] Stir 100 parts of vinyl silicone oil, 4 parts of hydrogen-containing silicone oil, and 2 parts of inhibitor evenly, then add 1 part of catalyst, and stir for 10-20 minutes to obtain a release agent. Use a coater to coat, evenly coat the release agent on the glassine paper, put it in an oven, and cure it at 60°C for 1 minute to obtain a release paper product with a coating thickness of 1-2 μm.

[0029] The prepared release paper has good release property, the release force is between 15-20g / 25mm, and the release performance is relatively stable, which is close to the conventional high-temperature curing release agent.

Embodiment 2

[0031] A kind of preparation of normal temperature quick-curing organosilicon release agent, comprises the following steps, parts by mass:

[0032] Stir 100 parts of vinyl silicone oil, 5 parts of hydrogen-containing silicone oil, and 3 parts of inhibitor evenly, then add 2 parts of catalyst, and stir for 10-20 minutes to obtain a release agent. Use a coater to coat, evenly coat the release agent on the glassine paper, put it in an oven, and cure it at 70°C for 50s to obtain a release paper product with a coating thickness of 1-2 μm.

[0033] The prepared release paper has good release property, the release force is between 15-20g / 25mm, and the release performance is relatively stable, which is close to the conventional high-temperature curing release agent.

Embodiment 3

[0035] A kind of preparation of normal temperature quick-curing organosilicon release agent, comprises the following steps, parts by mass:

[0036] Stir 100 parts of vinyl silicone oil, 6 parts of hydrogen-containing silicone oil, and 4 parts of inhibitor evenly, then add 3 parts of catalyst, and stir for 10-20 minutes to obtain a release agent. Use a coater to coat the release agent evenly on the glassine paper, put it in an oven, and cure it at 80°C for 35s to obtain a release paper product with a coating thickness of 1-2 μm.

[0037] The prepared release paper has good release performance, the release force is between 15-20g / 25mm, and the release performance is relatively stable, which is close to the level of conventional high-temperature curing release agents (120°C).

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Abstract

The invention belongs to the technical field of release materials, and discloses a solvent-free normal-temperature fast-curing silicone release agent and a preparation method thereof. The solvent-freenormal-temperature fast-curing silicone release agent provided by the invention comprises the following components in parts by mass: 100 parts of vinyl silicone oil, 3-10 parts of hydrogen-containingsilicone oil, 1-5 parts of an inhibitor and 1-3 parts of a catalyst. During the application of the release agent, various components of the release agent provided by the invention are mixed and stirred uniformly, and then the obtained mixture is coated on a substrate, wherein quick curing can be realized at 60 DEG C, and the curing time is 10s-2min. According to the difference of the usage amounts of the components and the varieties of the inhibitor in the release agent, the curing temperature can be adjusted (60-200 DEG C), and the curing time can also be adjusted. Moreover, the release paper sample obtained by using the release agent provided by the invention has stable release performance.

Description

technical field [0001] The invention belongs to the technical field of release materials, in particular to a solvent-free normal-temperature fast-curing silicone release agent and a preparation method thereof. Background technique [0002] Release agent, also known as anti-sticking agent, is used between the substrate and the pressure-sensitive adhesive layer. Its main function is to protect the pressure-sensitive adhesive layer coated on the substrate to prevent the pressure-sensitive adhesive layer from being polluted or sticking to other items. and fail. Whether it's labels, baking paper, self-adhesive envelopes, or hygiene products, release coatings are the unsung heroes of the entire paper industry. Silicone release agent is a large category of release agents. [0003] Silicone release agent has the advantages of good transparency, good isolation effect, adjustable peeling force in a wide range, high temperature resistance, solvent resistance, adjustable coating thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/21C09D183/07C09D7/65
CPCC08L2205/025C09D183/04C08L83/04
Inventor 胡继文李广森涂园园魏彦龙黄振祝欧明林树东吕满庚
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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