JP2012071569A - Composition consisting of flame-retardant laminated structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flame-retardant composition wherein a flame-retardant agent composition made by attaching a flame-retardant agent composition mainly consisting of electrolytes of water-soluble salts (K, Na, Ca, NH, and alkanolamine), to a film (fiber) component, does not break away owing to external factors (fluid, moisture, ultraviolet, contact, impact, thermal pressure, etc.), the flame-retardant composition which is improved in strength, optical transparency, etc. as well as flame-retardation.SOLUTION: An aqueous solution of a sulfate salt, a carbonate salt, a phosphate salt, a nitrate salt, a sulfamate salt, and an acid sulfate salt (the salts are K, Na, Mg, Ca, NH, and alkanolamine (C)), is attached to a film sheet composition (central core); and an object including the film (fiber) is joined, with a physical and chemical method, to cover both surface so that the object is processed to the film composition integrated into the three layers.

Description

Technology field

The present invention relates to a flame retardant sheet-like composition, in particular, a three-layer laminate composition in which an intermediate layer comprising a three-layer laminate as one unit is sandwiched so as to include a flame retardant and cover it. It is one that has improved the practical effectiveness of the flame retardant composition.

In addition to inorganic fibers (rock wool, asbestos, glass fiber, gypsum, silica), flame retardant sheets include many things such as organic phosphorus, bromine, halogen compounds, and polymer polymers (aromatics). However, in the present invention, an intermediate layer made of a simple sheet material (including paper) containing an electrolyte-safe and inexpensive salt is formed, and this is simply applied from both sides. It joined so that it might be covered, and it was set as the three-layer body. Moreover, it has a certain degree of transparency (visible), and it can be used for many purposes with a certain degree of visibility. It is easy to recycle and aftercare, and avoids the generation of harmful substances and the spread of fire even if a fire breaks out. The composition is completed.

Generally speaking, what is necessary is just to follow the technical idea specified in the applicant filed on September 29, 2009, but the product has a flame retardant exposed on its surface, There is a tendency that the effectiveness decreases due to contact from other sources and addition of moisture and moisture, and the use is limited to a very limited range.
For this reason, binders, adhesives, reinforcing agents, builders, water resistance agents, sheet reinforcing agents, etc. for resin processing were mixed with the product, and secondary or higher processing processes were used frequently. Deterioration and inability of workability, high cost, processing trouble, decrease in retention rate, and other inconvenient factors occurred, and the solution was awaited.

The content of the invention

Problems to be solved by the present invention

In the present invention, from the rule of thumb up to now, by covering the both sides of the flame-retardant treated product (sheet body) with a protective film cover and sealing it, a three-layer integrated sheet body is obtained. The present invention has been accomplished by devising a method capable of greatly expanding the workability, accuracy, and application.

Conventionally, a flame-retardant sheet is processed into a resin, and many products generally employ a crosslinking reaction or a hydrogen bonding compatibility method, or employ a flux. The flame retardant employed in the present invention is disadvantageous in terms of elemental powders, hygroscopicity, water solubility, and embrittlement, and has its limits even in mixed processing. Second, after processing the flame retardant When applying an overcoat agent, there are difficulties in adhesion and uniformity, in-mold processing, photocuring resin (PRT), photopolymer, or metal atom (Cu, Cr, Ni, Al, etc.) deposit processing, etc. However, a high cost and a decrease in yield are unavoidable, and the solution is urged from the intention of developing a flame retardant composition that is originally low cost and versatile.

Means for solving the problem

In order to further develop the usefulness of the flame retardant, the present inventor explained the conventional problems, and as a laminate packaging method, the intermediate layer was sandwiched by sandwiching a film or fibrous body, and heat sealing or hot melt , By electrodeposition method, chemical treatment (adhesive, etc.), laminating and laminating and forming a three-layer sheet set, protecting moisture, moisture and other intrusion from the outside, sheet A composition is created.

In this way, a layer structure with a full range of flame retardants in the intermediate layer is formed into a strong intermediate layer, which is completely sealed with a water-resistant, rigid, and resistant sheet-like material so as to surround it. In the event of such a situation, the flame retardant was present in the core, preventing the spread of fire and spreading fire, and sometimes suppressing the fire to achieve the original effect.

Even if the basic base of the intermediate layer is a flammable thermoplastic fiber (for example, cellulose, rayon, cupra, etc.), there is no problem. In short, it is sufficient that the flame retardant composition is surely filled in the sheet. In addition, an undercoat layer is provided on both sides, and a fabric material of a film composition (including a fiber body) covering both sides is joined. If the three-layer laminate thus obtained is selected so that the refractive indices of light are close to each other, the transparency (visibility) is improved.

The core sheet of the present invention is used as an everyday fabric product such as PET, PP, PE, PVC, PVA, PVB, acrylic, cellulose (rayon, diacetate, etc.), PC, PVDC, PS, silk, wool, etc. It has a relatively good transparency (generally 30 to 40% or more) and preferably has a thickness of about 0.01 μm to 500 μm. These are mixed compositions of two or more types (for example, nylon) / PET, PVC / PVDC, PET / PP, silk / rayon / nylon, etc.). In addition, the sheet body may be a recycled product or a waste-use product, even if it is not new. In short, it is only necessary to be a supporter as a core, and in particular, the significance of the three-layer laminate of the present invention is demonstrated. It is.

In the present invention, first, a sheet-like film or composition is used as an intermediate layer, and a specific flame retardant composition such as that filed on September 29, 2009 is contained therein. Attaches the necessary amount of deposits to the sheet by coating, impregnation, adhesion, kneading, microencapsulation, etc. This is made into a base (intermediate layer), and in order to improve protection and durability on both sides, films and fiber bodies are laminated, and these are formed into three layers by methods such as heat sealing, hot melt, binder, bond, etc. The intermediate layer is sealed as a unit.

In this way, the three-layered sheet composition improves water resistance, durability, and friction strength, improves the original flame resistance, and eliminates the intrusion factor from the outside. Can be maintained for a long time

The base of the flame retardant-treated product of the intermediate layer of the present invention may be a sheet-like fabric, and the structure may be any of a film, a woven fabric, and a non-woven fabric. Specifically, (1) cellulose as a natural fiber body , Silk, hemp, cotton, cashmere, mohair, ceramic, etc. (2) As synthetic fiber Recycled body: Rayon, viscose, tencel, cupra, etc. Semi-synthetic body: Diacetate, Triacetate, Promix, etc. Synthetic body: Polyamide, Aramid, Polyester, polyacrylonitrile (PAN), PAN copolymer, polyolefin (PP, PE, LPE, etc.), PVA, PVC, PVDC, polyurethane, spandex, polyflon, benzoate, PBT, polyimide, etc. Inorganic materials: glass, PAN, pitch, boron, Metal body such as silicon, alumina, rock wool, etc. Lumpur,
Any of these is effective, and it is generally selected from natural and synthetic fibers. The material for these intermediate layers includes both woven fabrics and nonwoven fabrics as well as films. A material having a thickness of 0.05 to 1000 μm and a weight of 5 to 200 g / m ² is used as a standard. The transparency is preferably about 30% or more in terms of the refractive index of light.

Thus, the sheet composition of the present invention was tested and confirmed by a method stipulated by JIS and the Fire Service Law. As a result, a numerical value more advantageous than that of the original intermediate layer was obtained. It was also confirmed that it could be used for applications (water, moisture, ultraviolet rays, impact, heat, pressure, contact, solvent, etc.) that could not be achieved with the intermediate layer alone.

The product of the present invention has a wide range of thickness of 0.05 μm to several mm, and the light transmittance can be controlled to almost all ranges of 10 to 90%. This is largely due to the attachment of films and fiber bodies that are bonded to both sides. Rather, the synergistic effect (bonding) is improved by 20 to 200% in strength and durability. This effect expands the fabric sheet, especially the flame retardant.

Effects of the present invention

The present invention has been applied (September 29, 2009) for specific uses of the flame retardant composition, such as curtains, carpets, table cloths, sheets, banners, protectors, shielding plates, wallpaper (wall cloth), various Expected to be extremely useful for new applications such as covers and sheets, and clothing and fiber film processed products, as well as having the advantage of being able to keep reasonable sheet composition durability at a low cost in terms of environment and safety. Can be exhibited. Especially in recent years, the safety of asbestos and rock wool has been regarded as a problem, and phosphorus, halogen (Br, F, I, Cl), antimony (Sb), bismuth (Bi), thallium (Tl), selenium (Se), isotopes It is possible to provide a bright material even in the flame retardant field. In addition, if the intermediate layer is a base core, recycled products and waste sheet bodies can be used, and the application will be expanded widely.

Hereinafter, typical examples of the present invention will be described together with examples.

上表の試作品組成物を用いて、次のフィルム布帛に塗着させて中間層とする難燃性フィルム体を試作して、以下の実験を行った。
（ア）ＰＥＴ繊維体（１２０ｇ／ｍ^２，光透過率：５０％）
▲１▼塗着量：２５ｇ／ｍ^２
▲２▼塗着量：３２ｇ／ｍ^２
（イ）酢酸ビニルポリマーフィルム（２２ｇ／ｍ^２，光透過率：６８％）
▲３▼塗着量：１８ｇ／ｍ^２
▲４▼塗着量：２５ｇ／ｍ^２
（ウ）ナチュラルＬＤＰＥフィルム（８ｇ／ｍ^２）
▲３▼塗着量：１２ｇ／ｍ^２
▲４▼塗着量：１８ｇ／ｍ^２ A flame-retardant film body having the following composition was produced as a prototype.

Using the prototype composition shown in the above table, a flame retardant film body was prepared as an intermediate layer by applying to the following film fabric, and the following experiment was conducted.
(A) PET fiber body (120 g / m ² , light transmittance: 50%)
(1) Application amount: 25 g / m ²
(2) Amount of coating: 32 g / m ²
(A) Vinyl acetate polymer film (22 g / m ² , light transmittance: 68%)
(3) Amount applied: 18 g / m ²
(4) Amount applied: 25 g / m ²
(U) Natural LDPE film (8 g / m ² )
(3) Amount applied: 12 g / m ²
(4) Coating amount: 18 g / m ²

上段は本組成体そのもののデータを示し、続いて本組成体を２０±２℃の水中に３時間浸漬して、これを乾燥させたもののデータを下段に示した。Next, using these six kinds of compositions (intermediate layer), PVB film (25 g / m ² , light transmittance: 70%) was heat-sealed (120 ° C.) on both sides for (1) and (2). The product was formed into a three-layered body as a prototype of the product of the present invention, and a performance confirmation test was performed.
(Part 1) Light transmittance (average of n = 3)
(A)-(1): 48% (The opposite surface can be visually recognized at 30% or more)
(A)-(2): 52% (The opposite surface can be visually recognized at 30% or more)
(Part 2) Flame retardancy (conforms to JIS L1091, A-1 method)

The upper part shows the data of the composition itself, and the lower part shows the data obtained by immersing the composition in water at 20 ± 2 ° C. for 3 hours and drying it.

(Part 3) Tensile strength (average of n = 3)
Subsequently, the tensile strength and shrinkage rate of the composition were confirmed by the methods of JIS L1004 and L1042, respectively.

(Part 4) Hereinafter, a similar test was tried.
Samples (A)-(3), (4): Cupra (21 g / m ² , 0.09 μm thickness, light transmittance: 68%) impregnated with 40% SBR latex (Dow Chemical Company, USA) Cure for 7 days to make a sample.
Samples (c)-(5), (6): PET / PE (15 g / m ² , 0.08 μm thickness, light transmittance: 61%) was heat-sealed (130 ° C.).
(Test 1, 3) Physical data

(Test 2) Examining the flame retardancy of four composition samples ((I)-(3) and (4), (C)-(5) and (6)) (conforming to JIS L1091, A-1 method) )

Summarizing the above test results, it is confirmed that the composition of the present invention can lead to a more advantageous effect of flame retardancy as a fabric sheet, and the new application field will be expanded without limit. We were able to.

Claims (2)

As a flame retardant sheet composition consisting essentially of a three-layer laminate, the flame retardant laminate is hermetically sealed so as to seal both sides by including the following flame retardant composition in the intermediate layer. A composition comprising a structure.
(Flame retardant)
Sulfates, phosphates, silicates, sulfamate, carbonate, nitrate, acid sulfate, chloride, K, Na ,, Mg, Ca , NH 4, in salts of alkanolamine _{(C 2 to 3)} If necessary, it contains 0.2 to 5 w% of a hydrophilic surfactant. A composition comprising a flame retardant laminate structure comprising the flame retardant according to item 1 in an intermediate layer of a flame retardant sheet composition basically comprising a three-layer laminate and sealed with a transparent film body. .