# US 2019/0169473 A1 · Composite material and adhesive bonding material having the composite material

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- Number: US 2019/0169473 A1
- Document ID: US20190169473A1
- Status: Published application
- Kind: A1
- Application number: 16/208,639
- Filed: 2018-12-04
- Published: 2019-06-06
- Earliest claimed: 2017-12-04
- Assignees: Schott AG
- Applicants: Schott AG
- Inventors: Jörg Schuhmacher; Philipp Treis; Jochen Drewke; Hans-Joachim Schmitt; Martun Hovhannisyan; Friedrich Siebers; Yvonne Menke-Berg
- Web page: https://patentgrep.com/patent/US20190169473A1

## CPC

- C09J 11/04: inorganic
- C03C 3/21: containing titanium, zirconium, vanadium, tungsten or molybdenum
- C03C 8/24: Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
- C03C 10/00: Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C 14/004: {the non-glass component being in the form of particles or flakes}
- C08K 3/22: of metals
- C08K 3/32: Phosphorus-containing compounds
- C08K 3/34: Silicon-containing compounds
- C08K 3/40: Glass
- C08K 7/20: Glass
- C09J 9/00: Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence)
- C09J 163/00: Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
- H10W 74/473: {containing a filler}
- C03C 2214/04: Particles; Flakes
- C08K 2201/003: Additives being defined by their diameter
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A composite material is provided that includes at least one first material and particles. The particles have a negative coefficient of thermal expansion and the particles have a sphericity Ψ of at least 0.7. The composite material includes at least 30 vol % of the particles at a particle size of d50≤1.0 μm or at least 40 vol % of the composite material at a particle size d50>1.0 μm.

## Claims

### Claim 1

A composite material, comprising:
a first material; and
particles having a negative coefficient of thermal expansion and a sphericity of at least 0.7, wherein the particles are present in at least 30 vol % of the composite material at a particle size of d50≤1.0 μm or are present in at least 40 vol % of the composite material at a particle size d50>1.0 μm.

### Claim 2 (depends on 1)

The composite material of claim 1, wherein the first material is selected from a group consisting of a polymer, a glass, and combinations thereof.

### Claim 3 (depends on 1)

The composite material of claim 1, wherein the first material is selected from a group of consisting of epoxy resins, glass frits, glass solders, and combinations thereof.

### Claim 4 (depends on 1)

The composite material of claim 1, wherein the particles comprise a compound selected from a group consisting of ZrW2O8, Y2Mo3O12, LiAlSiO4, LiASi2O6, and a phase system ZrO2—WO3-A2O3-P2O5.

### Claim 5 (depends on 1)

The composite material of claim 1, wherein the negative coefficient of thermal expansion of the particles is in a range from −1.0×10−6/K to −100×10−6/K in the temperature range from −50° C. to 200° C.

### Claim 6 (depends on 1)

The composite material of claim 1, wherein the particles are spray calcination particles.

### Claim 7 (depends on 1)

The composite material of claim 1, wherein the particles are pulsation reactor particles.

### Claim 8

An adhesive bonding material, comprising a composite material including a first material and particles, the particles having a negative coefficient of thermal expansion and a sphericity of at least 0.7, wherein the particles are present in at least 30 vol % of the composite material at a particle size of d50≤1.0 μm or are present in at least 40 vol % of the composite material at a particle size d50>1.0 μm.

### Claim 9 (depends on 8)

The adhesive bonding of claim 8, wherein the first material is selected from a group consisting of a polymer, a glass, and combinations thereof.

### Claim 10 (depends on 8)

The adhesive bonding material of claim 8, wherein the first material is selected from a group of consisting of epoxy resins, glass frits, glass solders, and combinations thereof.

### Claim 11 (depends on 8)

The adhesive bonding material of claim 8, wherein the particles comprise a compound selected from a group consisting of ZrW2O8, Y2Mo3O12, LiASiO4, LiASiO6, and a phase system ZrO2—WO3—Al2O3—P2O5.

### Claim 12 (depends on 8)

The adhesive bonding material of claim 8, wherein the negative coefficient of thermal expansion of the particles is in a range from −1.0×10−6/K to −100×10−6/K in the temperature range from −50° C. to 200° C.

### Claim 13 (depends on 8)

The adhesive bonding material of claim 8, wherein the particles are spray calcination particles.

### Claim 14 (depends on 8)

The adhesive bonding material of claim 8, wherein the particles are pulsation reactor particles.