Preparing technology for high temperature resistant protective film
A technology of high temperature resistant protective film and preparation process, applied in the direction of film/sheet adhesive, adhesive, etc., can solve the problems of flammability, odor, difficult to keep soft and usable, etc.
Inactive Publication Date: 2014-11-19
JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD
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Problems solved by technology
However, the existing protective films have the following disadvantages: they are flammable, smelly, easy to spread flames, and difficult to keep soft and usable in extreme temperatures
Method used
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Embodiment
[0021] Embodiment: a kind of preparation technology that is used for high temperature resistant protective film, described preparation technology comprises the following steps:
[0022] Put 28 parts of polyurethane resin Bostick 7411, 30 parts of polyurethane resin Bostick7412, 2.3 parts of crosslinking agent Boscodur 21, 2.5 parts of catalyst Metacue T-12, 1.5 parts of surfactant Surfactant G125, 15 parts of methyl ethyl ketone, and 17 parts of toluene into the mixture In the tank, start the variable-speed mixer, and stir continuously for 2-3 hours at a speed of 400-600 rpm;
[0023] During stirring, the temperature of the liquid rises to 30-40°C, and some bubbles are generated, then the stirring is stopped, and the polyurethane adhesive is obtained through filtration;
[0024] The polyimide film is installed on the film substrate unwinding roller, and the first power traction rail pulls the polyimide film from the film substrate unwinding roller;
[0025] The cast coater fl...
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The invention discloses a preparing technology for a high temperature resistant protective film. The preparing technology comprises the following steps: filling 28 parts of polyurethane resin Bostick7411, 30 parts of polyurethane resin Bostick7412, 2.3 parts of a crosslinker Boscodur21, 2.5 parts of catalyst MetacueT-12, 1.5 parts of a surfactant G125, 15 parts of butanone and 17 parts of toluene into a mixing trough, and continuously agitating for 2-3 hours under the rotating speed condition of 400-600 rpm; during agitating, raising the liquid temperature to 30-40 DEG C, and obtaining a polyurethane adhesive through filter processing; coating the polyurethane adhesive on a polyimide film by a tape casting machine; enabling a reinforced fiber net mounted on a reinforced fiber net uncoiling roller to drop on the polyimide film with the polyurethane adhesive under the self weight. The obtained high temperature resistant protective film provided by the invention is nonflammable, odorless and tear-resistant, prevents flame spread, cannot creep or crisp under the influence of ambient temperature variation, and is resistant to water vapor, chemicals and solvents.
Description
technical field [0001] The invention relates to a preparation process of a protective film, in particular to a preparation process for a high temperature resistant protective film. Background technique [0002] The protective film used in the prior art usually includes a substrate layer, an adhesive layer and a release material layer. When in use, the release material layer is torn off, and the adhesive layer is attached to the surface of the protected material. However, the existing protective films have the following disadvantages: they are flammable, smelly, easy to spread flames, and difficult to keep soft and usable under extreme temperatures. Therefore, how to develop a protective film that is non-flammable, non-melting, odorless, does not spread flames, and can still remain soft under extreme temperatures, and has improved tear resistance and comprehensive performance has become the direction of efforts of those skilled in the art. Contents of the invention [000...
Claims
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IPC IPC(8): C09J7/02C09J175/04
Inventor 金闯杨晓明
Owner JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD