Unlock instant, AI-driven research and patent intelligence for your innovation.

Single-component moisture curing reaction type power battery tab insulating glue and preparation method thereof

A moisture-curing, power battery technology, used in adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the problems of adhesive layer failure, peeling force drop, etc., and achieve good hydrolysis resistance.

Active Publication Date: 2022-05-13
BEIJING COMENS NEW MATERIALS
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the power battery manufacturing processes at home and abroad use the method of wrapping adhesive tape or using polyolefin, polyamide non-reactive hot melt adhesive to spray and cover the bonding method, so that the tabs of the power battery can be resistant to electrolyte and Insulation is required, but the bonding methods of adhesive tape and non-reactive hot melt adhesive to bond metal tape are all non-reactive bonding. The bonding force is mainly based on the van der Waals force between material molecules, and there are small molecules in the colloid to increase the viscosity Resin, so there is a problem that the adhesive layer fails and the peeling force decreases after long-term immersion in the electrolyte

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single-component moisture curing reaction type power battery tab insulating glue and preparation method thereof
  • Single-component moisture curing reaction type power battery tab insulating glue and preparation method thereof
  • Single-component moisture curing reaction type power battery tab insulating glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] Further, the present invention also provides a method for preparing the above-mentioned one-component moisture-curing reaction type power battery tab insulating glue, which may include the following steps:

[0049] Step 1. Weigh isocyanate, polytetrahydrofuran ether diol, polydodecanoic acid-1,6 hexanediol ester diol, polycarbonate - 1,6 hexanediol ester diol, hydroxyl terminated polybutadiene, ethylene-vinyl acetate copolymer, silane coupling agent, antioxidant, stabilizer and catalyst.

[0050] Step 2. Add the polytetrahydrofuran ether diol and the ethylene-vinyl acetate copolymer into the reaction kettle, raise the temperature to 150-160°C, stir at a constant speed of 150-160°C and vacuum degree -0.05-0.095Mpa for 1- After 2 hours, cool down to 100-130°C.

[0051] Step 3. Add the hydroxyl-terminated polybutadiene, the antioxidant, and the stabilizer into the reaction kettle, and stir for 0.5-2 hours at 100-140° C. and a vacuum of -0.05-0.095 Mpa, Cool down to 90-11...

Embodiment 1

[0071] A method for preparing a single-component moisture-curing reaction type power battery tab insulating glue may include the following steps:

[0072] Step A1, add 200kg of PT2000 and 110kg of ethylene-vinyl acetate copolymer into the reaction kettle, raise the temperature to 150-160°C, stir at a constant speed of 150-160°C, vacuum degree -0.05-0.095Mpa for 1-2 hours, Cool down to 100-130°C.

[0073] Step A2: Add 250kg of HTPB, 0.5kg of antioxidant, and 0.5kg of stabilizer into the reaction kettle, stir at 100-140°C, vacuum degree -0.05-0.095Mpa for 0.5-2 hours, and cool down to 90 ~110°C.

[0074] Step A3, adding 120kg of MDI-100 into the reaction kettle, stirring at 80-140°C and vacuum degree of -0.05-0.095Mpa for 0.5-2 hours.

[0075] Step A4: Add 80kg of PE4000 and 200kg of PCDL3000 to the reaction kettle after vacuum dehydration, and stir for 0.5 to 2 hours at 80-140°C and vacuum degree of -0.05-0.095Mpa.

[0076] Step A5: Add 38kg of secondary aminosilane and 1kg ...

Embodiment 2

[0078] A method for preparing a single-component moisture-curing reaction type power battery tab insulating glue may include the following steps:

[0079] Step B1, add 200kg of PT2000 and 150kg of ethylene-vinyl acetate copolymer into the reaction kettle, raise the temperature to 150-160°C, stir at a constant speed of 150-160°C, vacuum degree -0.05-0.095Mpa for 1-2 hours, Cool down to 100-130°C.

[0080] Step B2: Add 210kg of HTPB, 0.5kg of antioxidant, and 0.5kg of stabilizer into the reaction kettle, stir at 100-140°C, vacuum degree -0.05-0.095Mpa for 0.5-2 hours, and cool down to 90 ~110°C.

[0081] Step B3: Add 118kg of MDI-100 into the reaction kettle, stir at 80-140°C, vacuum degree -0.05-0.095Mpa for 0.5-2 hours.

[0082] Step B4: Add 100 kg of PE4000 and 200 kg of PCDL3000 to the reaction kettle after vacuum dehydration, and stir for 0.5 to 2 hours at 80-140° C. and vacuum degree of -0.05-0.095 Mpa.

[0083] Step B5: Add 20kg of secondary aminosilane and 1kg of N-me...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Functional group degreeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a single-component moisture-curing reaction type power battery tab insulating paste and a preparation method thereof, and the single-component moisture-curing reaction type power battery tab insulating paste is prepared from the following raw materials in parts by weight: 8-15 parts of isocyanate, 15-25 parts of polytetrahydrofuran ether glycol, 3-10 parts of polydodecyl acid-1, 6-hexanediol ester glycol, 1-3 parts of polycarbonate acid-1, 6-hexanediol ester glycol, 1-3 parts of polydimethylsiloxane, 1-3 parts of polydimethylsiloxane, 1-3 parts of polydimethylsiloxane, 1-3 parts of The invention relates to a high-temperature-resistant flame-retardant plastic which is prepared from the following components in parts by weight: 10 to 25 parts of 1, 6-hexanediol ester glycol, 10 to 40 parts of hydroxyl-terminated polybutadiene, 3 to 15 parts of ethylene-vinyl acetate copolymer, 0.5 to 6 parts of silane coupling agent, 0.05 to 0.5 part of antioxidant, 0.01 to 0.1 part of stabilizer and 0.01 to 0.5 part of catalyst. The adhesive has the characteristics of good hydrolysis resistance, acid and alkali resistance, solvent resistance and high temperature resistance, can tolerate long-term high-temperature soaking of an electrolyte without failure, still has enough adhesive property after being subjected to long-term high-temperature soaking of the electrolyte, and can be efficiently and industrially produced in a spraying or dispensing manner.

Description

technical field [0001] The invention relates to the technical field of polyurethane hot-melt adhesives, in particular to a single-component moisture curing reaction type power battery tab insulating adhesive and a preparation method. Background technique [0002] Power battery tabs are a raw material for polymer power battery products such as nickel-metal hydride batteries and lithium-ion batteries. The two ends of the positive and negative poles of the battery are the contact points when charging and discharging. This contact point is a connection inside the battery. . Power battery tabs are usually composed of a film and a metal strip. The film is used to cover the burrs of the tab metal material, prevent electrolyte leakage during battery packaging, and prevent short circuits between the metal strip and the aluminum-plastic film. [0003] At present, most of the power battery manufacturing process at home and abroad is to use the method of wrapping adhesive tape or using...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J123/08C09J11/06C08G18/69C08G18/48C08G18/44C08G18/42
CPCC09J175/14C09J11/06C08G18/698C08G18/4018C08G18/4854C08G18/4238C08G18/44C08L2201/08C08L23/0853C08K5/1345C08K5/13
Inventor 刘立忠易晨凤刘滨罗善国
Owner BEIJING COMENS NEW MATERIALS