KR20100128678A - Inorganic binder composition to ceramic board - Google Patents

Abstract

PURPOSE: An inorganic binder composition for a ceramic board is provided to improve refractory performance of a ceramic board by applying inorganic binder using Al and Si as a main component. CONSTITUTION: An inorganic binder composition for a ceramic board is prepared by mixing a binder in which a mol ratio of Al:Si is 1:20-35 and a hardener binder in which a mol ratio of Si:K:Na is 1:0.02-0.08:2-15, in a weight ratio of 1:0.4-1. The inorganic binder is included in the amount of 80 parts by weight.

Description

Inorganic binder composition for ceramic boards {Inorganic Binder Composition to Ceramic Board}

The present invention relates to an inorganic binder composition for ceramic boards for improving the fire resistance performance of ceramic boards. In particular, an inorganic binder composition for ceramic boards, which is economical and has improved fire resistance, by using an industrial by-product as a raw material and requiring no separate firing process. It is about.

Various finishing board products are on the market to create an environment-friendly indoor space with minimal generation of environmentally harmful substances. In the construction of such a product, a substantial portion of the product surface or the inside is made of a porous material having excellent adsorption performance, and has a function of adsorbing and fixing harmful substances generated in the surroundings. Ceramic boards are also mainly used for these porous materials, and in particular, wood raw materials are used in many parts as finishing boards because they not only minimize human harmfulness but also have excellent adsorption and hygroscopicity of harmful substances.

Korean patent (0718244) also incorporates wood wool to provide eco-friendly and sound-absorbing properties, and is similar to the plate commercially available for finishing materials by applying environmentally friendly inorganic binder technology due to the harmfulness of existing cement binders. It is possible to secure a high level of physical performance, and its usefulness is expanded as an environmentally friendly material.

However, the conventional wood wool ceramic board as described above has a disadvantage in that the hair wool is fragile in terms of fire resistance because more than 16 parts by weight of the total weight. In order to remedy these shortcomings, it is required to secure the fire resistance of the ceramic board by improving the fire resistance of the inorganic binder applied to the manufacture of conventional Momo ceramic board.

Accordingly, an object of the present invention is to solve the above-mentioned disadvantages and to improve the fire resistance performance of ceramic boards by applying an inorganic binder using a mixture of an aluminosilicate powder binder and a curing agent composed of Si: K: Na. An inorganic binder composition for ceramic boards is provided.

According to the present invention, the inorganic binder is a binder composed of Al: Si mol ratio = 1: 20 to 35 and a curing agent composed of Si: K: Na = 1: 0.02 to 0.08: 2 to 15 mol ratio. Binder: Hardening agent = 1: 0.4-1 It is achieved by the inorganic binder composition for ceramic boards characterized by mixing by weight ratio.

Herein, the inorganic binder is preferably contained at 80 parts by weight or more in the ceramic board composition.

The inorganic binder may be any one of aluminosilicate powder binder, sodium silicate solution, potassium silicate solution, sodium hydroxide, and potassium hydroxide, which are made of any one or more of metakaolin, fly ash, blast furnace slag fine powder, and silica silica. It is effective to mix | blend the hardening agent which consisted of the above, and to form.

As described above, the alumino silicate powder is composed of any one or more of metakaolin, fly ash, blast furnace slag powder, silica fume generated as an industrial by-product through the above results and has an Al: Si = 1: 20 to 35 mol ratio. Inorganic materials comprising a binder and a sodium silicate solution, potassium silicate solution, sodium hydroxide, and potassium hydroxide, and a hardener having a Si: K: Na = 1: 0.02 to 0.08: 2 to 15 mol ratio By applying a binder, the fire resistance of the ceramic board is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail.

In the present invention, the inorganic binder composition includes an aluminosilicate powder binder composed of Al: Si = 1: 20 to 35 mol ratio and a curing agent composed of Si: K: Na = 1: 0.02 to 0.08: 2 to 15 mol ratio. It is a composition by mixing 1: 0.4 to 1 by weight.

In this case, it is preferable to use aluminosilicate powder obtained from metakaolin, fly ash, blast furnace slag powder and silica fume, which are aluminosilicate materials produced as industrial by-products.

Here, when looking at the components of aluminosilicate-based metakaolin, fly ash, blast furnace slag powder, silica fume, alumina and silica account for more than 90wt% of the components.

In the aluminosilicate powder binder, when the Al: Si mol ratio is less than 1:20, the Al component is insufficient in forming the -Al-O-Si-O- structure which is a repeating unit of the inorganic polymer binder. If it exceeds Al: Si mol ratio = 1: 35, it hardens due to a rapid reaction under strong alkali conditions, resulting in problems in workability.

When the molar ratio of K to Si in the curing agent is less than 0.02, the curing speed of the inorganic binder becomes faster and the workability decreases. When the concentration exceeds 0.08, the Al and K bonds proceed first to form -Si-O-Al, which is an inorganic polymer repeating unit. -O- structure cannot be formed.

In addition, when the mol ratio of Na to Si is less than 2, the Na + ion concentration of the inorganic polymer binder is low, resulting in an uncured phenomenon, and in the case of more than 15, a problem of precipitation on the cured ceramic board surface occurs.

In addition, when the mixing ratio of the curing agent for the aluminosilicate powder binder is less than 0.4, it is impossible to manufacture the ceramic board due to the curing failure of the inorganic binder, and when it exceeds 1, the amount of the curing agent liquid is excessive to cause warpage and cracks after drying the ceramic board. As functional additives, components commonly used in the manufacture of ceramic boards, such as dispersants, glidants, nonionic surfactants and thickeners, are used.

And in the ceramic board composition, the inorganic binder should be more than 80 parts by weight, when less than 80 parts by weight it is impossible to secure the fire resistance performance of the flame retardant class 2 with the decrease in the physical performance of the ceramic board.

Hereinafter, the present invention relates to an inorganic binder composition for a ceramic board having a fireproof performance composed of an aluminosilicate powder binder, a curing agent, and a functional additive, and the present invention will be described in more detail with reference to Examples. It doesn't happen.

<Examples 1-3 and Comparative Examples 1-2>

Table 1 Ceramic Board Composition (parts by weight)

Ingredient Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Binder 46.5 47 46 45.5 44 Hardener 36.5 33.7 34.5 37 35.4 Wood wool 16.6 18.8 18.8 16 18.8 Functional additives 0.4 0.5 0.7 1.5 1.8 system 100 100 100 100 100

TABLE 2 Inorganic binder composition for ceramic board (mol ratio)

Ingredient Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Binder Al One One One 0.75 1.20 Si 28 33 34.5 2.70 2.25 Hardener Si One One One 1.10 1.20 K 0.035 0.055 0.065 0.50 0.80 Na 10.5 13.5 11.0 1.75 1.65

Table 1 shows a composition for preparing a ceramic board by applying an inorganic binder for the ceramic board, and Table 2 shows a composition of the inorganic binder used for manufacturing the ceramic board. And the following [Table 3] is a comparative evaluation of the characteristics of the ceramic board manufactured through the [Table 1]. Fire resistance was evaluated by flame retardancy test according to KS F 2271 standard.

[Table 3] Ceramic Board Characteristics

Properties Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 liquidity Good Good Good Good Good Condensation (hours; minutes) 01:10 00:55 01:20 00:55 00:47 3 days strength
(kgf / cm ² ) 288 295 311 240 293 Fire resistance performance Flame retardant class 2 Flame retardant class 2 Flame retardant class 2 Flame retardant class 3 Flame retardant class 3 Weight reduction rate (1000 ℃ 1hr) 20.4% 13.8% 15.5% 47.5% 43.1% Back temperature (1000 ℃ 1hr) 304 ℃ 272 ℃ 270 ℃ 455 ℃ 439 ℃

Claims (3)

The inorganic binder comprises a binder composed of Al: Si mol ratio = 1: 20 to 35 and a curing agent composed of Si: K: Na = 1: 0.02 to 0.08: 2 to 15 mol ratio. An inorganic binder composition for ceramic boards, characterized by mixing in a weight ratio. The method according to claim 1, The inorganic binder is an inorganic binder composition for a ceramic board, characterized in that it contains 80 parts by weight or more in the ceramic board composition. The method according to claim 1, The inorganic binder is composed of at least one of alumino silicate powder binder and sodium silicate solution, potassium silicate solution, sodium hydroxide, and potassium hydroxide, which are composed of any one or more of metakaolin, fly ash, blast furnace slag powder, and silica carpium. An inorganic binder composition for ceramic boards, characterized by mixing a curing agent.