SU1062195A1 - Binder for mineral wool slabs - Google Patents

Abstract

CONNECTING FOR MINERAL TABLETS, including starch, kaolin, boric acid, hydrophobic additive and water, characterized in that, in order to save starch preserving physicomechanical characteristics, it contains water as a hydrophobic additive, and is easily measured with a petroleum resin with a temperature range, with a temperature range, with a temperature range, with a temperature range, with a temperature range, with a temperature range, a temperature range, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, a temperature, 1 90 ° C, model RNSS mass of 600 1800 and iodine number 7-41 with the following | ratio of components, wt.%: 2.8-4.4 Starch Kaolin 5.4-5.5. 0,22-0,23 Boric acid Petroleum polymer g 0.1-0.2 resin Water Rest (L

Description

The invention relates to building materials and can be used in the manufacture of mineral wool. A starch-based binder, which includes: kaolin, boric acids, is known. And as a hydrophobic additive, it may contain either paraffin, or GKZH-94, or stearin 1. The disadvantage of this binder is that all of these hydrophobic Additives are shaking up the slab. Known binder 2, which has the following composition, wt.%: Starch4.47-4.49 Kaolin5.36-5.39 Bornic acid0.22 Paraffin0.54 WaterOther, However, the use of this binder in the production of Akmigran plates leads to the fact that paraffin in this case reduces the strength and increases the flammability of the plates. The goal of this is to save starch while retaining its physical and mechanical properties. This goal is achieved by the fact that the binder for mineral wool, including starch, kaolin, boric acid, hydrophobic additive and water, contains as a hydrophobic additive an aqueous dispersion of petroleum resin with a softening temperature of 75-90 ° C, molecular weight III) -1800 And iodine number 7-41 with the following ratio of components, wt.%: Starch2.8-4.4 Kaolin5.4-5.5 Boric acid, 0.22-0.23 Petroleum resin, 0.1-0.2 Water Remaining B The binder composition includes petroleum resin (PS) with the following characteristics: softening temperature audio 75-90 ° C, molecular weight of 600-1800, an iodine number of 7-41, which according to the invention on a par with the composition play an important role as affect the physico-mechanical properties of products obtained in this case Akmigran plates. The uniformity of the distribution of the PS in the plates during the Scouring process depends on the softening temperature, and the higher the molecular weight of the PS, the more its properties appear as binding, Tiuc and water-repellent. The binder is made as follows. In a container, a calculated amount of water is poured at a temperature of 50 ° C, boric acid and kaolin are introduced at a constant displacement. At the same time, a starch suspension is prepared in water at a temperature of 18-20 ° C in a ratio of 1: 2. The temperature of the kaolin slurry is adjusted to 86-90 ° C, the glue dispersion of petroleum resin is introduced, and the starch suspension is added with stirring. Duration of mixing is 2-3 minutes. When pouring water into a container, it is necessary to subtract the amount of water from the starch suspension and the adhesive suspension of the petroleum resin. PRI me R. According to the described technology, a binder is produced, the compositions of which are given in the table. Using the obtained binder, the plates are molded by mixing it with mineral wool granules until they are uniformly impregnated, then molded and dried. I The test results of the manufactured plates are given in the table.

14.0

13.8 4.40 5.50

15.3

19.5

0.23

0.20

89.67

1.2

4.0

400

1.0

1.75

392

4.00 5.45

0.225

19.5

15.0

0.15

90,175

2.80 5.40

0.22

14,214,8

0.10

91.48

Sound absorption coefficient measured

The composition of the interferometer at different frequencies of sound

125 Hz 250 Hz 500 Hz 1000 Hz I 2000 Hz

0.42

0.05

0.11

4.40

5.50

0.5

1062195

i Continuation of the table

|,

1.68

0.9

376

1.30

1.1

j Continuation of the table

Options

npe

0.63

0.70

Softening temperature 90 ° С, mol. Mass 1800, iodine number 7

0.62

0.64

The softening temperature is 80 ° С,

0.59 mol. mass 1000, iodine number 30

I Use the proposed c) | dgshego call. The saving of starch, which is a food product, in the manufacture of sound-proofing PLATES with good (ziko-mekhaiicheskaya xapaKtepiKitHkaMa, which can be used in the interior for finishing.

Claims (3)

BINDER FOR MINERALS (NEW PLATES, including starch, kaolin, boric acid, hydrophobic additive and water, characterized in that, in order to save starch while maintaining physicomechanical characteristics, it contains as a hydrophobic additive an aqueous dispersion of a petroleum polymer with a softening point of 75-90 ° C, molecular weight 600 1800 and iodine number 7-41 in the following (ratio of components, wt.%: Starch Kaolin Boric acid Petroleum resin Water: 2.8-4.4 5.4-5.5. 0.22-0.23 0.1-0.2 Else fin