KR-20260062427-A - Heat Insulator Having Flame Retardant or Non-Flammable Properties Using Inorganic Fibers Having a Siloxane Binder Coating Layer Formed Thereon and Its Manufacturing Method

KR20260062427AKR 20260062427 AKR20260062427 AKR 20260062427AKR-20260062427-A

Abstract

One aspect of the present invention aims to provide an insulating material made of inorganic fibers, in particular having flame-retardant or non-combustible properties by forming a heat-resistant coating layer on the surface. To achieve the above objective, the flame-retardant or non-combustible inorganic fiber insulating material according to the present invention has a coating layer formed on at least a portion of the surface of the inorganic fibers through a coating composition comprising a siloxane binder and an inorganic compound, and the siloxane binder may be formed through a combination of an organic silane compound and tetraethoxysilane or tetramethoxysilane.

Inventors

안기환
이창호

Assignees

주식회사 액시드

Dates

Publication Date: 20260507
Application Date: 20241029

Claims (15)

As an insulating material made of inorganic fibers, At least a portion of the surface of the above-mentioned inorganic fiber is formed with a coating layer created through a coating composition comprising a siloxane binder and an inorganic compound, and The above siloxane binder is a flame-retardant or non-combustible inorganic fiber insulation material made through a combination of an organic silane compound and tetraethoxysilane or tetramethoxysilane.
In Article 1, A flame-retardant or non-combustible inorganic fiber insulation material, wherein the above organic silane compound comprises a methyl group silane compound containing a methyl group, and the methyl group silane compound is 90% or more based on a molar ratio of the total organic silane compound.
In Article 2, The above methyl group silane compound may be selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, methyltrichlorosilane, dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldichlorosilane, trimethylmethoxysilane, trimethylchlorosilane, triethylmethoxysilane, triethylchlorosilane, chloromethyltrimethylsilane, (chloromethyl)-methyl-dichlorosilane, chloromethyldimethylchlorosilane, tetraethoxysilane, tetramethoxysilane, and combinations thereof, for a flame-retardant or non-combustible inorganic fiber insulation material.
In Article 2, A flame-retardant or non-combustible inorganic fiber insulation material, wherein the above organic silane compound further comprises a phenyl group silane compound containing a phenyl group, and the phenyl group silane compound may be selected from the group consisting of phenyltrimethoxysilane, phenyltriethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, diphenylsilanediol, triphenylsilanol, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane, phenyltrichlorosilane, diphenyldichlorosilane, triphenylchlorosilane, phenylmethyldichlorosilane, and combinations thereof.
In Article 2, The above organic silane compound further comprises an epoxy group silane compound containing an epoxy group, wherein the epoxy group silane compound may be selected from the group consisting of 3-glycidoxypropyl trimethoxysilane, 3-glycidoxypropyl triethoxysilane, 3-glycidoxypropyl methyldimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 2-(3,4-epoxycyclohexyl)ethyl trimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyl triethoxysilane, and combinations thereof, a flame-retardant or non-combustible inorganic fiber insulation material.
In Article 2, A flame-retardant or non-flammable inorganic fiber insulation material, wherein the above organic silane compound further comprises a vinyl group silane compound containing a vinyl group, and the vinyl group silane compound may be selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(2-methoxyethoxy)silane, vinyltrisisopropoxysilane, vinyldimethylethoxysilane, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, and combinations thereof.
In Article 2, The above organic silane compound further comprises an acrylic group silane compound containing an acrylic group, wherein the acrylic group silane compound may be selected from the group consisting of 3-methacryloxypropyltrimethoxysilane, methacryloxypropyltris(triethylsiloxy)silane, 3-methacryloxypropylisopropoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acetoxypropyltrimethoxysilane, and combinations thereof, a flame-retardant or non-combustible inorganic fiber insulation material.
In Article 1, A flame-retardant or non-combustible inorganic fiber insulation material, wherein the inorganic compound is selected from the group consisting of aluminum hydroxide, aluminum oxide, kaolin, bentonite, kaolin, perlite, titanium oxide, mica, and combinations thereof, and is included in an amount of 10 to 400 parts by weight when the solid weight of the siloxane binder in the coating composition is 100 parts by weight.
In Article 1, Flame-retardant or non-combustible inorganic fiber insulation material having a molecular weight of 1,500 to 10,000 of the above siloxane binder.
In Article 1, The above coating composition is a flame-retardant or non-combustible inorganic fiber insulation material further comprising a phosphorus-based flame retardant.
In Article 10, The above-mentioned phosphorus-based flame retardant is a flame-retardant or non-combustible inorganic fiber insulation material that is a phosphate ester compound or cyclic phosphate.
In Article 1, The above inorganic fiber is a glass fiber, a flame-retardant or non-combustible inorganic fiber insulation material.
In Article 12, The above insulation material is a flame-retardant or non-combustible inorganic fiber insulation material, such as a glass fiber cloth or glass wool made of the above glass fiber.
A method for manufacturing a flame-retardant or non-combustible inorganic fiber insulation material according to any one of claims 1 to 13, (a) a step of preparing a silane solution by mixing a combination of an organic silane compound containing a methyl group and a silane compound containing tetraethoxysilane or tetramethoxysilane with a first solvent; (b) a step of preparing a first oligomer solution by adding a catalyst to the above silane solution and heating it; (c) a step of preparing a siloxane binder by diluting the first oligomer solution with a second solvent; (d) a step of preparing a coating composition by mixing an inorganic compound and a phosphorus-based flame retardant with the above siloxane binder; and (e) A method for manufacturing flame-retardant or non-combustible glass fiber insulation, comprising the step of impregnating a coating object containing glass fibers into the coating composition, removing it, and curing it.
In Article 14, A method for manufacturing flame-retardant or non-combustible glass fiber insulation, further comprising a viscosity control step after step (d) and before step (e) above, wherein a solvent comprising ethanol, water, isopropanol, or a combination thereof is mixed into the coating composition to control the viscosity.

Description

Heat Insulator Having Flame Retardant or Non-Flammable Properties Using Inorganic Fibers Having a Siloxane Binder Coating Layer Formed Thereon and Its Manufacturing Method The present invention relates to an insulating material with flame-retardant or non-combustible properties using an inorganic fiber formed with a heat-resistant coating layer. In particular, the heat-resistant coating layer is formed through a coating composition comprising a siloxane binder and an inorganic compound, thereby maintaining the flexibility of the inorganic fiber used as an insulating material while simultaneously satisfying heat resistance properties. Recently, there have been cases of damage caused by fire in underground parking lots of buildings, ships, and construction sites. In particular, insulation materials used for pipes in underground parking lots and similar areas often consist of foamed organic materials such as polyurethane foam or phenolic foam, which cannot withstand continuous heat in the event of a fire. Consequently, there is a problem in that these insulation materials act as pathways for the spread of fire. Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. As used herein, terms of degree such as “about,” “substantially,” etc., are used to mean at or near the stated value when inherent manufacturing and material tolerances are presented in the stated meaning, and are used to prevent unscrupulous infringers from unfairly exploiting the disclosure in which precise or absolute values are mentioned to aid in understanding the invention. Furthermore, throughout this specification, “a step of” or “a step of” does not mean “a step for”. Throughout this specification, the term “combination thereof” included in the Markush-type expression means one or more mixtures or combinations selected from the group consisting of the components described in the Markush-type expression, and means including one or more selected from the group consisting of said components. Throughout the entire specification, the description "A and/or B" means "A or B, or, A and B". The inorganic fiber insulation material having flame retardancy or non-combustibility that can be provided according to the present invention has a coating layer formed on at least a portion of the surface of the inorganic fiber through a coating composition comprising a siloxane binder and an inorganic compound, and the siloxane binder can be made through a combination of an organic silane compound and tetraethoxysilane or tetramethoxysilane. Conventional insulation materials often utilize materials such as polyurethane foam that cannot withstand continuous heat, which has the problem of being vulnerable to fire. To solve this, the present invention provides an insulation material that can withstand heat while maintaining its original shape for a long time even at high temperatures by making an insulation material using inorganic fibers such as glass wool, glass fiber cloth, silica cloth, or ceramic wool, and simultaneously forming a heat-resistant coating layer on the surface of the inorganic fibers through a coating composition combining a siloxane binder and an inorganic compound. In particular, since the heat-resistant coating layer is created using a siloxane binder, it exhibits excellent flexibility and durability, ensuring no damage even when the insulation material is deformed and providing excellent heat resistance. Furthermore, by adding inorganic compounds, it becomes possible to achieve non-combustible properties beyond mere flame-retardant characteristics. The siloxane binder in the present invention can achieve room-temperature curing characteristics that are difficult to obtain in conventional siloxane binders. Through this, the heat-resistant coating layer formed after curing is combined with an inorganic compound to possess not only excellent flame-retardant or non-combustible properties but also high hardness and flexibility, thereby enabling the formation of a flame-retardant or non-combustible heat-resistant layer on glass fibers, glass fiber cloths, glass wool, silica wool, etc., where flexibility is important. In particular, for forming a coating layer on a surface or through impregnation on products such as glass fibers and glass fiber cloths, where flexibility is important in the usage environment, the flexibility of the coating layer becomes a very important required characteristic. Meanwhile, the molecular weight of the siloxane binder included in the coating composition may be in the rang