SK500292011A3 - Fireproof paint coat matter - Google Patents

Abstract

Fire-resistant coating material comprising ammonium polyphosphate in the amount of 5 to 50 % by weigh, pentaerythriol in the amount of 6 to 33 % by weight, melamine in the amount of 4 - 22 % by weight, a binding agent on the basis of polyvinylacrylic dispersion in the amount of 10 to 16.3 % by weight, a softener on the basis of di-isonyl phthalate in the amount of 2.3 to 3.5 % by weight, talc in the amount of 3 to 10 % by weight, a stabilizer (a preservative) on the basis of 4-chloro-3-methylphenol in the amount of 0.15 to 0.25 % by weight and water in the amount of 13.5 to 17 % by weight.

Description

Fireproof coating

Technical field

The invention relates to coatings for technical purposes, in particular to ADINA fireproof coatings.

BACKGROUND OF THE INVENTION

Fire protection coatings for technical purposes are widely known and widely used in industry. Called. intumescent technical swellings are special coatings for special applications. They may only be applied by trained specialists on the basis of a design by fire protection specialists, and the exact coating thicknesses must be observed.

The role of intumescent coatings with increased fire resistance is to increase the fire resistance of industrial objects, e.g. building structures, eventually extend their functionality in the event of fire, eg. electrical cables. In practice, most often intumescent coatings are used. paints. In the event of a fire, the coating swells (creating a mechanical obstruction), which is made possible mainly by the phosphorus-containing component. The swelling of the coating provides the industrial objects concerned with protection against the destructive effects of the fire, as far as possible, until fire is allowed. As a result, intumescent coatings may only be applied by trained specialists to work with these materials, and their application must adhere to the exact coating thicknesses that have been previously designed by fire protection experts. They are also sold only in specialized stores.

Known paints usually include swelling components, film-forming binder components that provide film formation and adhesion to the substrate to which the composition is applied, and may also contain various pigments and other coloring agents.

E.g. US 3,654,190 discloses an intumescent fire resistance coating comprising melamine, dipentaerythritol, a phosphorus-containing component and chlorinated paraffin. The disadvantage of this coating is its low resistance to weather conditions as well as its cracking (destruction) during fire.

US-A-3,635,970 discloses an oil coating which, in addition to melamine pyrophosphate, dipentaerythritol, also contains chlorinated paraffin as a flame retardant.

US-A-4 965 296 discloses a liquid intumescent coating comprising, in addition to ammonium phosphate, dibasic phosphate, ammonium polyphosphate or potassium tripolyphosphate, or a combination thereof, dipentaerythritol, polyol or chlorinated paraffin, or a combination thereof, melamine resin or urea, or urea, or urea; Their disadvantage is not only low weather resistance but also relatively low plasticity at intumescence due to the high density of the carbon layer, which reduces the thermal insulation properties.

In addition to the aforementioned low weather resistance, most of the currently available and used fire protection coatings have insufficient adhesion, resulting in inadequate abrasion resistance and susceptibility to mechanical damage. In addition, they are relatively absorbent.

It is an object of the present invention to find such a fire-retardant coating composition which will have the undesirable properties of the prior art intumescent coatings used.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are substantially eliminated by the fire-resistant coating composition (ADINA) of the present invention, which contains ammonium polyphosphate in an amount of 5 to 50% by weight, pentaerythritol in an amount of 6 to 33% by weight, melamine in an amount of 4 to 22% by weight, binder (polyvinyl acrylate-PVAcry dispersion adhesive, preferably grade D3) in an amount of 10 to 16.3% by weight, diisononyl phthalate (DINP) plasticizer in an amount of 2.3 to 3.5% by weight, talc in an amount of 3 % stabilizer (preservative) based on 4-chloro-3-methylphenol in an amount of 0.15 to 0.25% by weight; and water in an amount of 13.5 to 17% by weight.

It has been found to be advantageous that the ADINA coating composition according to the present invention contains ammonium polyphosphate in an amount of 25 to 35% by weight, pentaerythritol in an amount of 16 to 25% by weight, melamine in an amount of 9 to 17% by weight, binder in an amount of 12%. 5 to 16 wt.%, Plasticizer in an amount of 2.8 to 3.2 wt.%, Talc in an amount of 6 to 8.5 wt.%, Stabilizer in an amount of 0.18 to 0.22 wt. and water in an amount of 11 to 15.5% by weight.

It has also been found that another phosphate derivative, for example ammonium polyphosphate, such as melamine, may also be used such as melamine cyanurate, melamine borate, melamine polyphosphate, melamine diphosphate, melamine pyrophosphate and melamine phosphate as well. use mono-pentaerythritol or di-pentaerythritol.

By adjusting the content of the individual components, it is possible to achieve an ADINA paint with different physicochemical properties that allow its use in various industrial areas.

The ADINA coating composition of the present invention can be prepared by simply mixing the individual components in a homogenizer.

The advantages of the present ADINA coating composition are mainly that, although they are so-called. technical coatings, their physico-mechanical properties are compared to classical decorative and technical coatings, which have higher requirements for these parameters. In particular, it is extremely adhesive, which, combined with plasticity, creates a high (coarse) carbon layer in the fire, which gradually increases and swells due to the high temperatures in the fire (since the carbon layer contains air bubbles) and provides exceptional thermal insulation properties application of low thickness.

The following examples illustrate but do not limit the scope of the present invention.

EXAMPLES

Example 1

ADINA Fire Protection Coating for Rolling Application

Ingredients:

Ammonium polyphosphate

pentaerythritol

melamine

Binder (PVAcry-based adhesive) Water

Plasticizer (DINP)

Stabilizer (PARMETOL) Talc wt. % 18 wt. % wt. % 13.8 wt. % wt. %

0.2 wt. % wt. %

Method of preparation (same for all types of ADINA paints):

The individual components were dosed and homogenized in a homogenizer in the following order: ammonium polyphosphate, pentaerythritol, melamine and talc and mixed thoroughly.

The binder part of the fire protection coating composition 2/3 of the total amount was separately prepared and homogenized + PVAcry + DINP adhesive + stabilizer and ammonium polyphosphate, pentaerythritol, melamine and talc were added to the mixture, homogenized and finally added gradually 1/3 of water.

Example # 2

ADINA fire protection paint for application by spatula

Ingredients:

Ammonium polyphosphate

pentaerythritol

melamine

Binder (PVAcry-based adhesive) Water

Plasticizer (DINP)

Stabilizer (PARMETOL) Talc wt. % wt. % 14 wt. %

15.8 wt. % wt. % 0.2 wt. % 7 wt. %

Example # 3

ADINA fireproof coating for watering (thin)

Ingredients:

Ammonium polyphosphate

pentaerythritol

melamine

Binder (PVAcry-based adhesive) Water

Plasticizer (DINP)

Stabilizer (PARMETOL) wt. 8 wt.%

10.8 wt. %

Talc wt. % 17 wt. % 3 wt. % 0.2 wt. % 7 wt. %

Example # 4

ADINA fire protection paint for spray application

Ingredients:

Ammonium polyphosphate

pentaerythritol

melamine

Binder (polyvinyl acrylate based adhesive) Water

Plasticizer (DINP)

Stabilizer (PARMETOL) Talc wt. % 18 wt. % wt. % 15.8 wt. % wt. % 0.2 wt. % 7 wt. %

A comparison of the physico-mechanical properties of the ADINA fire-resistant coating according to Example 1 and the paint for wood and metal for outdoor use are given in the following table.

table

Technical specifications Mass Example 1 ACTIN W (data sheet) Color White White Dry matter content min. 70% glossy min. 40% min. 50% Bulk density 1400 kg / m ³ glossy approx. 1100 kg / m ³ matt approx. 1400 kg / m ³ viscosity 1500-6700 mPa.s approx. 1500-6000 mPa.s Adhesion to substrate min. 0.25 MPa min. 0.25 MPa Adhesion to substrate after test resistance to sudden temperature changes min. 0.25 MPa min. 0.25 MPa Frost - resistance (adhesion to the substrate after 15 freezing cycles min. 0.25 MPa min. 0.25 MPa Equivalent diffusion thickness RH20: max. 2 m max. 1,5 m Abrasion resistance min. 20 minutes min. 20 minutes Water resistant 0 l / m ² . 30 minutes 0 l / m ² . 30 minutes

As can be seen from the table above, ADINA fire protection coating complies with the physico-mechanical properties of classical technical and decorative coatings, not just fire resistant coatings.

Claims (2)

Fire-protective coating composition comprising ammonium polyphosphate in an amount of 5 to 50% by weight, pentaerythritol in an amount of 6 to 33% by weight, melamine in an amount of 4 to 22% by weight, polyvinyl acrylic dispersion binder in an amount of 10 up to 16.3 wt%, diisononyl phthalate plasticizer in an amount of 2.3 to 3.5 wt%, talc in an amount of 3 to 10 wt%, 4-chloro-3-methylphenol stabilizer in an amount of 0.15 % to 0.25 wt. and water in an amount of 13.5 to 17% by weight. Fire-protective coating composition according to claim 1, characterized in that it contains ammonium polyphosphate in an amount of 25 to 35% by weight, pentaerythritol in an amount of 16 to 25% by weight, melamine in an amount of 9 to 17% by weight, binder in an amount of 12 5 to 16 wt.%, Plasticizer in an amount of 2.8 to 3.2 wt.%, Talc in an amount of 6 to 8.5 wt.%, Stabilizer in an amount of 0.18 to 0.22 wt. and water in an amount of 11 to 15.5% by weight.