Flame-resistant composite member

Patent metadata

Field	Value
Publication number	US-9707742-B2
Application number	US-201214357906-A
Country	US
Kind code	B2
Filing date	Nov 13, 2012
Priority date	Nov 14, 2011
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

There is provided a flame-resistant composite member exhibiting remarkably high flame resistance even if having a flammable base material. The flame-resistant composite member according to the present invention has a film formed of a silicone resin composition (C) containing at least an inorganic oxide particle-containing condensation-reactive silicone resin on at least one surface of a base material. The inorganic oxide particle-containing condensation-reactive silicone resin may be a condensation-reactive silicone resin (A) including a crosslinked structural body wherein an inorganic oxide particle dispersed in a polysiloxane resin having a condensation-reactive group and the polysiloxane resin are crosslinked through a chemical bond. The silicone resin composition (C) may contain the condensation-reactive silicone resin (A) and an inorganic particle (B).

First claim

The invention claimed is:

1. A flame-resistant composite member, having a film formed of a silicone resin composition (C) comprising at least an inorganic oxide particle-containing condensation-reactive silicone resin on at least one surface of a base material, wherein the flame-resistant composite member has a property of not igniting or carbonizing in a combustion test of a railway rolling stock material combustion test.

2. The flame-resistant composite member according to claim 1 , wherein the inorganic oxide particle-containing condensation-reactive silicone resin is a condensation-reactive silicone resin (A) comprising a crosslinked structural body wherein in the crosslinked structural body, an inorganic oxide particle dispersed in a polysiloxane resin having a condensation-reactive group and the polysiloxane resin are crosslinked through a chemical bond.

3. The flame-resistant composite member according to claim 2 , wherein in the condensation-reactive silicone resin (A), as the polysiloxane resin having a condensation-reactive group, (i) a condensation-reactive group-containing polysilsesquioxane wherein a basic structural unit thereof is a T unit, or (ii) the condensation-reactive group-containing polysilsesquioxane wherein a basic structural unit thereof is a T unit and also a condensation-reactive group-containing polysiloxane wherein basic structural units thereof are a D unit and a T unit and/or a polysiloxane resin having a silanol group are used.

4. The flame-resistant composite member according to claim 1 , wherein the silicone resin composition (C) comprising at least an inorganic oxide particle-containing condensation-reactive silicone resin comprises: a condensation-reactive silicone resin (A) comprising a crosslinked structural body wherein in the crosslinked structural body, an inorganic oxide particle dispersed in a polysiloxane resin having a condensation-reactive group and the polysiloxane resin are crosslinked through a chemical bond; and an inorganic particle (B).

5. The flame-resistant composite member according to claim 4 , wherein the inorganic particle (B) is at least one inorganic particle selected from the group consisting of glass frits, silica particles, alumina particles, aluminum hydroxide particles, magnesium hydroxide particles, tin oxide particles and clay mineral particles.

6. The flame-resistant composite member according to claim 5 , wherein the glass frit as the inorganic particle (B) has a deformation point of not less than 300° C. and not more than 700° C.

7. The flame-resistant composite member according to claim 5 , wherein the glass frit as the inorganic particle (B) is a glass frit formed of at least one component selected from silicic acid, boric acid, borosilicic acid, aluminum oxide, calcium oxide, sodium oxide, lithium oxide and phosphorus oxide.

8. The flame-resistant composite member according to claim 7 , wherein the glass frit as the inorganic particle (B) is a glass frit formed of at least a component comprising phosphorus oxide.

9. The flame-resistant composite member according to claim 5 , wherein the glass frit as the inorganic particle (B) has an average particle diameter of 0.1 μm to 1,000 μm.

10. The flame-resistant composite member according to claim 4 , wherein the inorganic particle (B) has a content of 0.1 to 500 parts by weight with respect to 100 parts by weight of the condensation-reactive silicone resin (A).

11. The flame-resistant composite member according to claim 1 , wherein the base material is a sheet-like or plate-like plastic-based base material.

12. The flame-resistant composite member according to claim 1 , wherein the flame-resistant composite member has a thickness of 50 to 6,000 μm.

13. The flame-resistant composite member according to claim 1 , wherein the film formed of the silicone resin composition (C) has a thickness of 5 to 1,000 μm.

14. The flame-resistant composite member according to claim 1 , wherein the flame-resistant composite member exhibits a total amount of heat generated per 10 min of not more than 30 MJ/m 2 , a maximum heat generation rate of not more than 300 kW/m 2 , and an ignition time of not less than 60 sec, in a cone calorimeter test of a railway rolling stock material combustion test.

15. The flame-resistant composite member according to claim 1 , being used as a transport machinery interior member, a building material member, a display member, a household appliance member or an electronic circuit member.

16. The flame-resistant composite member according to claim 15 , wherein the transport machinery interior member is an illumination cover.

17. An illumination apparatus using a flame-resistant composite member according to claim 1 , the illumination apparatus comprising, at least, a light source to generate light used for illumination, and an illumination cover installed so as to cover the light source and having the flame-resistant composite member, wherein light from the light source is transmitted through the flame-resistant composite member and emitted.

18. A flame-resistant composite member, having a film formed of a silicone resin composition (C) comprising at least an inorganic oxide particle-containing condensation-reactive silicone resin on at least one surface of a base material, wherein the inorganic oxide particle-containing condensation-reactive silicone resin is a condensation-reactive silicone resin (A) comprising a crosslinked structural body wherein in the crosslinked structural body, an inorganic oxide particle dispersed in a polysiloxane resin having a condensation-reactive group and the polysiloxane resin are crosslinked through a chemical bond.

19. A flame-resistant composite member, having a film formed of a silicone resin composition (C) comprising at least an inorganic oxide particle-containing condensation-reactive silicone resin on at least one surface of a base material, wherein the silicone resin composition (C) comprising at least an inorganic oxide particle-containing condensation-reactive silicone resin comprises: a condensation-reactive silicone resin (A) comprising a crosslinked structural body wherein in the crosslinked structural body, an inorganic oxide particle dispersed in a polysiloxane resin having a condensation-reactive group and the polysiloxane resin are crosslinked through a chemical bond; and an inorganic particle (B).

Assignees

• Nitto Denko Corp

Inventors

• Doi Kohei
• Nagasaki Kunio
• Sugino Yusuke
• Hida Takafumi
• Nakayama Yusuke
• Hirano Keisuke

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• Y10T428/269

  including synthetic resin or polymer layer or component · CPC title

• Y10T428/31507

  Of polycarbonate · CPC title

• C08G77/18

  to alkoxy or aryloxy groups · CPC title

• C08J2483/04

  Polysiloxanes · CPC title