SU1055746A1 - Binder for making acoustic mineral-wool products and process for preparing same - Google Patents

Abstract

1. Coupling for the manufacture of acoustic mineral wool products containing starch, kaolin boric acid, Urea, a hydrophobic additive and water, characterized in that, in order to improve the acoustic and physico-mechanical properties of the products, the binder additionally contains sodium phosphate dibasic, aluminum potassium alum, potassium manganese, and as a hydrophobic additive - the bottom. comolecular polyethylene in the following ratio of components, cu.ch .: 8-9 Starch 13-14 Kaolin .. Bourne 0.42-0.47 acid 2.5-2.90 Urea. Sodium phosphate biclaminate, 18-0.20 schenium Low molecular weight 0.64-0.70 polyethylene Alumokalie0, 010-0,012 alum alum Potassium marganoxoxis 0, 0 lily 200-210 Water 2. A method for producing a binder for the manufacture of acoustic minerals; y products, including mixing the starting components followed by heating the mixture, characterized by the fact that, in order to improve the acoustic and physicomechanical properties of the products,: l: l 0,01-0,012 wt. aluminum potash. kvasvas and 0,01-0,012 ma.ch. potassium permanganate is dissolved in 36 parts of ma.h. a water with the subsequent introduction of 8-9 ma.ch. starch during pe- and agitation and mixed with 13-14 wt.h. kaolin; 0.42-0.47 mac. boric acid. lots / 2.5-2.90 ma.ch. urea, 0.18-0.20 mas.h. nis of phosphoric acid double-substituted logo, 0.64-0.70 mas. of low molecular weight polyethylene and 168-174 mac. water.

Description

The invention relates to the manufacture of acoustic products, mainly to binder compositions and methods for their manufacture. A binder based on an adhesive composition, consisting of starch and urea, is known l. However, when using this composition (adding kaolin, boric acid, paraffin and water) as a binder, upon the drying of the acoustic plates, the decomposition of urea occurs, as a result of which the acoustic product swells and the physical and mechanical properties of the product decrease. Closest to the invention is a binder consisting of starch, kaolin, boric acid, urea, paraffin and water. It is made by preparing starch and kaolin suspensions, mixing them and heating them. 29 parts by weight are taken to prepare the starch suspension. water, 10.86 parts by weight are introduced into it. starch and stirred until complete mixing of the starch. 175 parts by weight are taken to prepare the kaolin suspension. water, heated to, then, with stirring, load 13.86 parts by weight. kaolin 0.58 weight.h. boric acid 1, 38 ve pa eafina. The mixture is heated with stirring. Thus, the prepared starch suspension is introduced into the obtained kaolin suspension with stirring. The contents are heated to 90 ° C and stirred at this temperature for 5 minutes. The poor condition of a state-of-the-art binder and a known binder is its high viscosity, as a result of which a complete and even impregnation of the miner of the fiber-filled aggregate is not ensured, which reduces the physical, mechanical and acoustic properties of the product. The purpose of the invention is to increase the acoustic and physicomechanical properties of mineral wool products. The aim is to achieve a binder for the manufacture of acoustic mineral wool products containing starch, kaolin, natural acid, urea, a hydrophobic additive, and water, additionally containing sodium phosphate dibasic potassium aluminum alum, potassium manganate, and as a hydrophobic additive, low molecular weight polyethylene in the following ratio of components, wt. h .: Starch8-9 Kaolin13-14. Boric acid 0.42-0.47 Urea 2.50-2.90 Sodium phosphate biclamenate, 18-0.20 schenium Low molecular weight 0.64-0.70 polyethylene Alumosilane0, 010-0.012 alum alum Potassium manganic acid0, 010-0.012 Water200 -210 In addition, according to the method for producing a binder for the manufacture of mineral wool products, including mixing the starting components followed by heating the mixture, 0.01-0.0122 mash.h. aluminum potassium alum and 0, -01-0,012 mac. potassium permanganate is dissolved in 32-36 wt.h. water, followed by the introduction of 8-9 ma.ch. starch with stirring and mixed e 1314 mach. kaolin) 0.42-0.47 mac. boric acid 2.5-2.90 may-.h. urea; 0.18-0.20 ma.ch. sodium phosphate dvuhzameshchennogoJ 0,64-0,70 м.ч. low molecular polyethylene and 168-174 May. including vodz. Corn starch (iTOCT 7697-66), kaolin (GOST 19608-74), boric acid (GOST 18704-78), urea-carbamide grade .A (GOST 208175), and sodium formatelion dixyl (GOST 4172- 76), low mole-. cool polyethylene (tU 605-1516-77) potassium alum (GOST 15028-77) technical potassium permanganate (GOST 5777-71). Examples of compounds associated with the manufacture of acoustic mineral wool products are given in Table. 1. The binder is manufactured as follows. First, a starch suspension is made. For this, alumina potassium alum and potassium manganese aluminum solution is vat in water. Starch is introduced into the irradiated solution. In a reactor equipped with a stirrer and a steam heater, water is heated to INHIBIT boric acid, sodium phyhoronic acid disubstituted, urea, low molecular weight polyethylene. With continuous stirring, kaolin is introduced as an eupension and heated to 90 ° C. Previously, the Ari prepared starch suspension is added to the resulting mixture and stirred for 2–3 microns with heating. Example. A starched suspension is prepared. To do this, take 32 ma.ch. water, 0.01 ppm is dissolved in it. potassium alum and 0.01 May, including manganese potassium, then 8 wt.h. starch. The contents are stirred until the starch is fully stirred. For the preparation of kaolin supension take 168 ma.h. water, is heated to, then when rewinding load May 13. h. boric kieloty; 2.5 May including urea, .0.18 ma.ch. two of them are mixed with nofouric niobal sodium and 0.64 wt.h. low molecular weight polyethylene. The mixture is heated to 90 ° C with stirring. In this way, the prepared karchic precipitate is introduced into the prepared kaolin supension with stirring. Stirring is continued at 80-86 ° C for 2-3 minutes. EXAMPLE 2 To prepare the starch eupension, 34 mas. Of water is taken, it is 0.011 mas. Hour. aluminum potassium quats and 0.011 mash of potassium permanganate, then 8.64 mash of ch. starch. The contents are mixed until the starch is fully stirred. For the preparation of kaolin supension, take 171 ma.h. water, heated to 60 ° C, then with stirring load 13.5 May, h. Kaolin / 0.45 mach. boric kielota 2.7 May urea; 0.19 mach. dvuhkameshchennogo phorofelnogo sodium {0.67 mach. low molecular weight polyethylene. Laugh with stirring, heated to 90 ° C. In this way, pre-prepared starch diet is introduced into the received kaolin eupenzy with stirring. Stirring is continued at 80-8b C- for 2-3 minutes. Example 3. To prepare a starch eupension, 36 ma.h. of water is taken, it has 0.012 ma.h. potassium and potassium alumina 0.012 ma.ch. manganese potassium potassium, then 9 ma.h. starch. The contents are stirred until the starch is fully stirred. For the preparation of kaolin eupenzy take 174 ma.h. water, heated to 60 ° C, then with stirring load 14 may. - h. kaolin, 0.47 ma.ch. boric acid 2.9 mach.h urea 0.2 mach.ch. dvuhkameshchennogo foforofnokilogo sodium and 0.7 ma.ch.h. low molecular weight polyethylene. Laugh while stirring is heated to 90c. Thus, in the resulting kaolin eupenziya with stirring injected pre-prepared starch eupenziyu. The contents are stirred at 80-86 ° C for 2-3 minutes. Laboratory specimens are made to determine the physicomechanical and acoustic properties of the products. For this, the mineral wool granules are mixed in the form of a 1: 3 ratio. Of The obtained maeey is formed into samples with dimensions of mm and dried at 160-170 ° C for 13-14 hours, then samples are cut out according to GOST 17918-72. Physico-mechanical and acupuncture indicators of the samples are given. in table. 2. As can be seen from table. 2, the use of the proposed product for the manufacture of acoustic products enhances the physicomechanical and acoustic properties of the products. Table

Low molecular weight polyethylene paraffin alumina s alum

Potassium manganese

Water

0.70

0.67

1.38

0.012

0.011

0.011

0.012 210

204,205 1.62 1.57 3.2 0.05 1417 1.67 1.67 1.02 3.2 0.05 2399 1.82 1.77 1.02 3.1 0.05 3390 Izve1, 08 1.27 1.5 4.5 0.06 Fast 400

Table 2 0.25 0.4 0.660.71 0.22. 0.4 0.660.70 0.21 0.4 0.650.69 0.13 0.4 0.660.60

Claims (2)

1. A binder for the manufacture of acoustic mineral wool products containing starch, kaolin, boric acid, Urea, a hydrophobic additive and water, characterized in that, in order to increase the acoustic and physico-mechanical properties of the products, the binder additionally contains sodium phosphate disubstituted, alum-potassium alum , potassium permanganate, and as a hydrophobic additive - low molecular weight polyethylene in the following ratio, wt.h .: Starch Kaolin .. Boric acid Urea. Sodium Phosphate Disubstituted Low Molecular Weight Polyethylene Alum Potassium Alum Potassium Manganese Acid Water 8-9 13-14 0.42-0.47 * 2.5-2.90 0.18-0.20 0.64-0.70 0.010-0.012 0.010-0.012 200-210 2. A method of obtaining a binder for the manufacture of acoustic mineral wool products, comprising mixing the starting components with subsequent heating of the mixture, characterized in that, in order to increase the acoustic and physico-mechanical properties of the products, 0.01-0.012 parts by weight potassium alum and 0.01-0.012 parts by weight potassium permanganate dissolved in 3236 wt.h. water, followed by the introduction of 8-9 wt.h. with stirring and mixed from May 13-14. including kaolin; 0.42-0.47 parts by weight boric acid / 2.5-2.90 wt.h. urea, '0.18-0.20 parts by weight of sodium disubstituted phosphate, 0.64-0.70 parts by weight of low molecular weight polyethylene and 168-174 parts by weight water. SU „, 1055746