Resin composition

Patent metadata

Field	Value
Publication number	US-12365797-B2
Application number	US-202017441912-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Mar 27, 2019
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A resin composition, a method for manufacturing the same and a use thereof are provided. The resin composition provides excellent thixotropy while having one or more excellent properties selected from thermal conductivity, adhesiveness, insulation properties, tensile characteristics, hardness and flame retardancy.

First claim

The invention claimed is:

1. A resin composition, comprising:
a curable resin or a curing agent;
particles, and
thermally conductive fillers,
wherein the curable resin is a polyol compound,
the thermally conductive fillers comprise ceramic fillers,
the particles are comprised in an amount of 5 to 30 parts by weight relative to 100 parts by weight of the curable resin or the curing agent,
the thermally conductive fillers are comprised in an amount of 50 parts by weight or more relative to 100 parts by weight of the curable resin or the curing agent, and
the particles have the D50 particle diameter in a range of 1 to 10 μm, and have a ratio (D90/D50) of a D90 particle diameter to the D50 particle diameter in a range of 1.5 to 5, and the particles have a change rate of a D50 particle diameter in a range of −95% to −80% after milling with zirconium beads having a particle diameter of 1 mm for 20 hours.

2. The resin composition according to claim 1 , wherein the particles have a change rate of a D10 particle diameter in a range of −85% to −70% after milling with the zirconium beads having the particle diameter of 1 mm for 20 hours.

3. The resin composition according to claim 1 , wherein the particles have a change rate of a D90 particle diameter in a range of −95% to −80% after milling with the zirconium beads having the particle diameter of 1 mm for 20 hours.

4. The resin composition according to claim 1 , wherein the curing agent is an isocyanate compound.

5. The resin composition according to claim 1 , wherein the particles have a ratio (D50/D10) of the D50 particle diameter to a D10 particle diameter in a range of 3.5 to 6.

6. The resin composition according to claim 1 , wherein the resin composition has a thixotropic index value of 1 to 4, wherein the thixotropic index value is a ratio (V0.25/V2.5) of a viscosity (V0.25) at a shear rate of 0.25/s to a viscosity (V2.5) at a shear rate of 2.5/s, at room temperature.

7. A method for preparing the resin composition of claim 1 , the method comprising:
mixing the curable resin or the curing agent with the particles and the thermally conductive fillers.

8. A method for preparing a resin composition comprising:
mixing a curable resin or a curing agent with particles and thermally conductive fillers to form a first mixture, and
mixing the first mixture with a second thermally conductive filler having an average particle diameter larger than that of the thermally conductive fillers,
wherein the curable resin is a polyol compound,
the thermally conductive fillers comprise ceramic fillers,
the particles are comprised in an amount of 5 to 30 parts by weight relative to 100 parts by weight of the curable resin or the curing agent,
the thermally conductive fillers are comprised in an amount of 50 parts by weight or more relative to 100 parts by weight of the curable resin or the curing agent, and
the particles have the D50 particle diameter in a range of 1 to 10 μm, and have a ratio (D90/D50) of a D90 particle diameter to the D50 particle diameter in a range of 1.5 to 5, and the particles have a change rate of a D50 particle diameter in a range of −95% to −80% after milling with zirconium beads having a particle diameter of 1 mm for 20 hours.

9. A battery module, comprising:
a module case having a top plate, a bottom plate, and sidewalls;
a plurality of battery cells; and
a resin layer,
wherein an inner space is formed by the top plate, the bottom plate and the sidewalls;
wherein the plurality of battery cells is in the inner space of the module case,
wherein the resin layer comprises the resin composition of claim 1 and is in contact with the plurality of battery cells and the bottom plate or the sidewall.

10. A battery pack, comprising two or more of the battery module of claim 9 , wherein the two or more battery modules are electrically connected to each other.

11. A vehicle comprising the battery pack of claim 10 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Hyoung Sook
• Yang Se Woo
• Cho Yoon Gyung
• Kang Yang Gu
• Park Eun Suk
• Kim Hyun Suk
• Park Sang Min
• Yang Young Jo

Classifications

• H01M50/227

  Organic material · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08K2201/003

  Additives being defined by their diameter · CPC title