SU813988A1 - Nonwoven fibrous material - Google Patents

Abstract

NONWAVE FIBROUS MATERIAL, including inorganic fiber and carbamide binder, is so that, in order to increase the water and heat resistance of the material, as well as reduce toxicity, the material contains as a binder mixture 100 May. h urea-formaldehyde-ammonia resin, with a content of 13-25 wt.%. triazinone cycles and 6-1o wt.% methyl groups and 50-100 may. including polyvinyl acetate or rubber with a ratio of inorganic surface and binder according to weight, respectively 87-78: 13-22.

Description

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00 The invention relates to the plastics industry and concerns no fibrous material. A non-woven fibrous material, including inorganic fiber and a urea binder, for example, MF-17 urea-formaldehyde resin, mixed with polyvinyl acetate (as a dispersion of PVA) is known, with a dry residue ratio of 65:35 or l. However, this material does not provide the necessary water and thermostat bones and reduce toxicity. The purpose of the invention is to increase the heat resistance of the material, as well as reduce its toxicity. This goal is achieved by the fact that nonwoven fibrous material, including inorganic in fiber and carbamide binder, as the last material contains a mixture of 100 mash. carbamidophor maldehyde ammonia resin with a content of 13-25 wt.% triazinonov cycles and 6-10 wt.% methylol groups and 50-100 wt.h. polyvinyl acetate or rubber with a ratio of inorganic fiber and a binder by weight, respectively, 87 78: 13-22. Receivers 1-14. To obtain a nonwoven fibrous material, a 4-6% aqueous binder solution is prepared. The composition of the aqueous solution of the bond | Squiggle, mac.ch .: Urea-formaldehyde-ammonia resin Polyvinyl acetate dispersion or rubber 50-100 kovy latex Non-woven fiber material composition Hardener 0.01-8.0 Remaining Water Organic hardeners for carbamide-formaldehyde-ammonia resin can serve as organic , for example, ammonium phosphate, ammonium chloride, oxalic acid, phosphoric acid, etc. Properties of aqueous solutions of the binder: The viscosity is relative to a VZ-4 viscometer at 20 C, s 10-12 Density, g / cm 1,007- 1,014 PH 6-8 The resulting binder solution impregnates the formed canvas. Getting the canvas. Glass mass, flowing out of the spinnerets, is pulled into the fibers under the action of a stream of hot air or mechanically. The elongated fibers are laid on the receiving-forming conveyor grid in an even layer using a vacuum created under the mesh. The canvas thus formed, consisting of a thin layer of randomly arranged fibers, is impregnated with a working above binder solution of 4-6% concentration. The excess binder is sucked off from the glass fiber, after which the canvas is heat treated at 180-200c in order to finally remove moisture and cure the binder. in tab. 1 and 3 shows the compositions in table. 2 and 4 are the properties of a nonwoven glass fiber material. a b l and c a 1 type BB-M

Fiber Fiberglass Basalt Fiber Mineral Fiber

82

82

82

78

82

82

Binder

Urea-formaldehyde-ammonia resin and PVA in the ratio of 1: 0.55 according to the invention

Urea-formaldehyde ammonia. resin and rubber latex L-7 in the ratio of 1: 0.55 according to the invention

Urea-formaldehyde resin MF-17 and PVA in a ratio of 1: 0.55 according to the prototype

arb amidoformaldehyde-ammonium resin and rubber latex L-7 in a 1: 1 ratio according to the invention

Properties of non-woven fibrous material of the type BB-M (material thickness 1.2-1.5 mm 17 17 17 Fiber diameter, μm 1.24 1.27 1.27 Material thickness, mm 165 172 175 Weight 1 m, g Raz1% 1vna load of a strip of material 50 mm wide in the wet state (water resistance kg 6.0 6.7 6.8

The continuation of the table.1.

1818

18

18

18

Table 17 15 9 17 17 1.05 .1.22 1.35 1.35 1.30 167 156 169 168 172.8 5.0 4.8 4.7 6.7 Elongation,% 1.8 2, 0 2.0 Flexibility (the number of bends before the appearance of cracks / strips 30 mm wide at the core 0 20 mm, more than 10 1010

The composition of non-woven fiberglass material type BB-G

87 82, 78 82

13 18

Carb amidoformaldehyde ammonia resin and rubber latex L-7 in the ratio of 1: 0.55 according to the invention

Urea-formaldehyde resin MF-17 and PVA in q-ratio 1: 0.55 according to the prototype

Urea / rmaldehyde ammonia resin and latex rubber in a 1: 1 ratio according to the invention

Continued table. 2

Table 3

82

82

22

18

18

18 - f2, 01.62.7 2.5 2.0 10101010 10

Properties of non-woven fiberglass material type BB-G (material thickness 0.60 mm)

Table

Claims (1)

NONWOVEN FIBER MATERIAL, including inorganic fiber and urea binder, with the fact that, in order to increase the water and heat resistance of the material, as well as reduce toxicity, the material contains a mixture as a binder 100 parts by weight urea-formaldehyde-ammonia resin, with a content of 1325 wt.%. triazinone cycles and 6-10 wt.% Methylol groups and 50,000 of May. including polyvinyl acetate or rubber with a ratio of inorganic wolfrn and binder by weight, respectively 87-78: 13-22. oo with