Printable coating for lithium ion battery wrapping film and preparation method of printable coating

A lithium-ion battery, printing coating technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problem of affecting the printing effect of UV ink, reducing the surface energy of the raw material of the wrapping film, poor surface adhesion, etc. problem, to achieve the effect of not easy to slip, ensure reliability, and strong surface energy

Active Publication Date: 2022-03-18
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wrapping film without any treatment, when printing with UV ink, the adhesion of UV ink to the surface of the wrapping film without any treatment is poor, which may easily lead to ink loss
CN110834457A discloses a wrapping film material for a power battery, the surface of which is not treated, and may have the problem of ink loss when used for the label of a power battery
[0005]Furthermore, the raw material of the wrapping film needs to be rolled up with the silicon-containing release film before use, and the transfer of silicon from the silicon-containing release film will reduce the Surface energy, which affects the printing effect when printing with UV ink

Method used

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  • Printable coating for lithium ion battery wrapping film and preparation method of printable coating
  • Printable coating for lithium ion battery wrapping film and preparation method of printable coating
  • Printable coating for lithium ion battery wrapping film and preparation method of printable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation of a printable coating for a lithium-ion battery wrapping film.

[0038] (1) Composition of printable coatings for lithium-ion battery wrapping films.

[0039]

[0040] The polyester resin has the following characteristics: a relative molecular weight of 20,000, a glass transition temperature of 65°C, an acid value of 5 mgKOH / g, a hydroxyl value of 5 mgKOH / g, and a linear structure.

[0041] Resin-based adhesion promoters have the following characteristics: phosphate esters with polyester as the main chain.

[0042] (2) Preparation of printable coatings for lithium-ion battery wrapping films.

[0043] Step S1. Put 150 parts of ethyl acetate / butyl acetate mixed solvent and 30 parts of polyester resin into the temperature-controllable reactor to completely dissolve the polyester resin;

[0044] Step S2. Weigh the dissolved polyester resin in the glue mixing container, add 3 parts of crosslinking agent aziridine / amino resin mixture, 3 parts of p...

Embodiment 2

[0046] Example 2: Preparation of a printable coating for a lithium-ion battery wrapping film.

[0047] (1) Composition of printable coatings for lithium-ion battery wrapping films.

[0048]

[0049] The polyacrylate resin has the following characteristics: a relative molecular weight of 30,000, a glass transition temperature of 78° C., an acid value of 3.5 mgKOH / g, and a BMA / MMA copolymer.

[0050] (2) Preparation of printable coatings for lithium-ion battery wrapping films.

[0051] Step S1. Put 157 parts of ethyl acetate / butanone mixed solvent and 25 parts of polyacrylate resin into the temperature-controllable reactor to completely dissolve the polyacrylate resin;

[0052] Step S2. Weigh the dissolved polyacrylate resin in the glue mixing container, add 2 parts of crosslinking agent isocyanate, 2 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate, and stir to form a uniform printing coating liquid;

[0053] Step S3. The printable coating liquid is coated...

Embodiment 3

[0054] Example 3: Preparation of a printable coating for a lithium-ion battery wrapping film.

[0055] (1) Composition of printable coatings for lithium-ion battery wrapping films.

[0056]

[0057]

[0058] Acrylic modified polyurethane resin has the following characteristics: relative molecular weight is 10,000, glass transition temperature is 60°C, acid value is 5 mgKOH / g, hydroxyl value is 5 mgKOH / g, and straight chain structure.

[0059] Resin-based adhesion promoters have the following characteristics: phosphate esters with polyester as the main chain.

[0060] (2) Preparation of printable coatings for lithium-ion battery wrapping films.

[0061] Step S1. Put 150 parts of acetone solvent and 30 parts of acrylic modified polyurethane resin into the temperature-controllable reactor to completely dissolve the polyester resin;

[0062] Step S2. Weigh the dissolved polyester resin in the glue mixing container, add 3 parts of cross-linking agent epoxy resin, 3 parts of...

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Abstract

The invention discloses a printable coating for a lithium ion battery wrapping film and a preparation method of the printable coating. The printable coating for the lithium ion battery wrapping film comprises the following raw materials in parts by weight: 20-40 parts of resin, 1-5 parts of a cross-linking agent and 1-5 parts of an adhesion promoter, a molecular chain of the resin comprises carboxyl and/or ester groups, and the resin can be cross-linked at room temperature. The printable coating has very strong bonding strength on the double-faced adhesive tape, so that the reliability of the lithium ion battery is ensured; the adhesive force to UV ink is strong, and ink is not easy to fall off; and the surface energy and the printing effect of the coating film are not influenced in use.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a printable coating used for lithium-ion battery wrapping films and a preparation method thereof. Background technique [0002] At present, there are mainly two fixing methods for fixing the lithium-ion battery on the battery compartment: 1. directly bonding the lithium-ion battery to the battery compartment of the electronic device through a double-sided adhesive having adhesive properties. In this method, the surface of the lithium-ion battery is directly bonded to the double-sided adhesive. When maintaining and replacing the lithium-ion battery, the lithium-ion battery needs to be pulled out from the battery compartment. If the operation is improper, the surface of the lithium-ion battery will be easily damaged The surface glue is pulled and deformed, wrinkled, damaged, etc. Lithium-ion batteries with damaged surfaces are prone to heat and swelling when they are used again, which make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D133/04C09D175/14C09D7/63C09D7/65
CPCC09D167/00C09D7/63C09D7/65C09D133/04C09D175/14C09D133/00C08L61/20C08L67/00C08K5/3412C08K5/29C08K5/10C08L63/00C08K5/098Y02E60/10
Inventor 鲍爱兵阮镜棠
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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