Flame-retardant single-faced tape and preparation method thereof

Abstract

The invention discloses a flame-retardant single-faced tape and a preparation method thereof. The single-faced tape comprises a transparent base film, a flame-retardant coating, a flame-retardant glue layer and a single-faced release film, wherein the flame-retardant coating coats the surface of the transparent base film, and the flame-retardant glue layer coats the surface of the flame-retardant coating; the single-faced release film covers the surface of the flame-retardant glue layer; the flame-retardant coating comprises the following components in percentage by weight: 25-35% of PU resin, 10-30% of fire retardant, and 40-55% of dispersing solvent butanone; the flame-retardant glue layer comprises the following components in percentage by weight: 90-97% of acrylic adhesive, 2-8% of a flame retardant, and 0.5-2% of a curing additive. According to the flame-retardant single-faced tape, the flame-retardant coating and the flame-retardant glue layer are prepared through special formulas, so that the flame-retardant single-faced tape is high in adhering force, high in adhesion force, outstanding in flame retardance, and outstanding in weather resistance, can be widely applied to inner surface wrapping and adhering of a mobile phone battery, and facilities the production.

Description

technical field

[0001] The invention relates to the technology in the field of adhesive tapes, in particular to a single-sided adhesive tape with flame-retardant properties and a preparation method thereof. Background technique

[0002] In the battery manufacturing process, it is often necessary to use adhesive tape for wrapping and attaching. At present, the mobile phone industry is developing rapidly, and the power of mobile phone batteries is also increasing, and high-power mobile phone batteries will generate a lot of heat during operation, which is likely to cause risks such as spontaneous combustion of mobile phones. The flame retardant performance of the adhesive tape of the mobile phone battery is not good. When the risk of spontaneous combustion of the battery occurs, the flame retardant effect cannot be achieved, which may easily lead to unexpected accidents for users. Contents of the invention

[0003] In view of this, the present invention addresses the defici...

Examples

preparation example Construction

[0022] The present invention also discloses a method for preparing a single-sided adhesive tape with flame retardant properties, comprising the following steps:

[0023] (1) Preparation of flame retardant coating: first add flame retardant to the dispersion solvent methyl ethyl ketone and stir and disperse with a mixer for 25-35 minutes, then add PU resin to stir and disperse; after stirring fully, use a grinder to fully grind and filter twice Finally, flame retardant coatings are obtained.

[0024] (2) Preparation of flame retardant glue: Dilute and disperse the curing additive with a solvent at a ratio of 1:1, then add it to the acrylic adhesive for stirring, then add the flame retardant and stir evenly and let it stand for 25-35 minutes to obtain the flame retardant glue .

[0025] (3) Apply the flame-retardant coating on the transparent base film, bake it at 85°C-95°C for 2.5-3.5 minutes for curing, and after curing, put it into a drying room at 45°C-55°C for 23-25h Dryi...

Embodiment 1

[0029] A single-sided adhesive tape with flame-retardant performance includes a transparent base film 10, a flame-retardant coating 20, a flame-retardant adhesive layer 30 and a single-sided release film 40.

[0030] The flame retardant coating 20 is coated on the surface of the transparent base film 10, the flame retardant adhesive layer 30 is coated on the surface of the flame retardant coating 20, and the single-sided release film 40 is coated on the flame retardant adhesive layer 30 on the surface. Moreover, the transparent base film 10 is made of PET. The flame retardant coating 20 includes the following components by weight percentage: 25% of PU resin, 30% of flame retardant and 45% of dispersing solvent butanone; the thickness of the flame retardant coating is 5 μm. The flame retardant adhesive layer 30 includes the following components in weight percentage: 90% of acrylic adhesive, 8% of flame retardant and 2% of curing additive, and the thickness of the flame retarda...

Embodiment 2

[0037] A single-sided adhesive tape with flame-retardant performance includes a transparent base film 10, a flame-retardant coating 20, a flame-retardant adhesive layer 30 and a single-sided release film 40.

[0038] The flame retardant coating 20 is coated on the surface of the transparent base film 10, the flame retardant adhesive layer 30 is coated on the surface of the flame retardant coating 20, and the single-sided release film 40 is coated on the flame retardant adhesive layer 30 on the surface. Moreover, the transparent base film 10 is made of PET. The flame retardant coating 20 includes the following components in weight percent: PU resin 35%, flame retardant 10% and dispersion solvent butanone 55%; the thickness of the flame retardant coating is 10 μm. The flame retardant adhesive layer 30 includes the following components in weight percentage: 97% of acrylic adhesive, 2% of flame retardant and 1% of curing additive, and the thickness of the flame retardant adhesive...

technical field

[0001] The invention relates to the technology in the field of adhesive tapes, in particular to a single-sided adhesive tape with flame-retardant properties and a preparation method thereof. Background technique

[0002] In the battery manufacturing process, it is often necessary to use adhesive tape for wrapping and attaching. At present, the mobile phone industry is developing rapidly, and the power of mobile phone batteries is also increasing, and high-power mobile phone batteries will generate a lot of heat during operation, which is likely to cause risks such as spontaneous combustion of mobile phones. The flame retardant performance of the adhesive tape of the mobile phone battery is not good. When the risk of spontaneous combustion of the battery occurs, the flame retardant effect cannot be achieved, which may easily lead to unexpected accidents for users. Contents of the invention

[0003] In view of this, the present invention addresses the defici...

Examples

preparation example Construction

[0022] The present invention also discloses a method for preparing a single-sided adhesive tape with flame retardant properties, comprising the following steps:

[0023] (1) Preparation of flame retardant coating: first add flame retardant to the dispersion solvent methyl ethyl ketone and stir and disperse with a mixer for 25-35 minutes, then add PU resin to stir and disperse; after stirring fully, use a grinder to fully grind and filter twice Finally, flame retardant coatings are obtained.

[0024] (2) Preparation of flame retardant glue: Dilute and disperse the curing additive with a solvent at a ratio of 1:1, then add it to the acrylic adhesive for stirring, then add the flame retardant and stir evenly and let it stand for 25-35 minutes to obtain the flame retardant glue .

[0025] (3) Apply the flame-retardant coating on the transparent base film, bake it at 85°C-95°C for 2.5-3.5 minutes for curing, and after curing, put it into a drying room at 45°C-55°C for 23-25h Dryi...

Embodiment 1

[0029] A single-sided adhesive tape with flame-retardant performance includes a transparent base film 10, a flame-retardant coating 20, a flame-retardant adhesive layer 30 and a single-sided release film 40.

[0030] The flame retardant coating 20 is coated on the surface of the transparent base film 10, the flame retardant adhesive layer 30 is coated on the surface of the flame retardant coating 20, and the single-sided release film 40 is coated on the flame retardant adhesive layer 30 on the surface. Moreover, the transparent base film 10 is made of PET. The flame retardant coating 20 includes the following components by weight percentage: 25% of PU resin, 30% of flame retardant and 45% of dispersing solvent butanone; the thickness of the flame retardant coating is 5 μm. The flame retardant adhesive layer 30 includes the following components in weight percentage: 90% of acrylic adhesive, 8% of flame retardant and 2% of curing additive, and the thickness of the flame retarda...

Embodiment 2

[0037] A single-sided adhesive tape with flame-retardant performance includes a transparent base film 10, a flame-retardant coating 20, a flame-retardant adhesive layer 30 and a single-sided release film 40.

[0038] The flame retardant coating 20 is coated on the surface of the transparent base film 10, the flame retardant adhesive layer 30 is coated on the surface of the flame retardant coating 20, and the single-sided release film 40 is coated on the flame retardant adhesive layer 30 on the surface. Moreover, the transparent base film 10 is made of PET. The flame retardant coating 20 includes the following components in weight percent: PU resin 35%, flame retardant 10% and dispersion solvent butanone 55%; the thickness of the flame retardant coating is 10 μm. The flame retardant adhesive layer 30 includes the following components in weight percentage: 97% of acrylic adhesive, 2% of flame retardant and 1% of curing additive, and the thickness of the flame retardant adhesive...

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