SU633952A1 - Nonwoven material - Google Patents

Description

one

The invention relates to the production of nonwoven materials, in particular glass fiber materials.

Known non-woven material containing a fibrous layer of glass roving and the substrate. .

However, this material has low performance properties.

The aim of the invention is to improve the performance properties of the material.

This is achieved by using 1-1.3 weight paper as the substrate. Partly, glassworking is 9-20 wt. h

Glass fiber is produced by continuously applying chopped glass wool onto paper and attaching special needles to it by drawing individual glass yarns through the paper, i.e., using the same technique and equipment as the canvas on a gauze substrate.

The properties of the proposed fiberglass in comparison with the canvas, obtained on a gauze substrate for STP 214-74, are presented in table. one.

Due to the use of paper quality, fiberglass quality is improved, the number of gaps and gaps is reduced, and a more uniform density is obtained.

The proposed canvas is intended for the manufacture of sheet fiberglass, which is not inferior in its properties to fiberglass made on canvas on Mar, 1st substrate.

The properties of glass-reinforced plastics based on soft fiberglass and resin composition B + MPFM (50% 4-50%) are given in Table 2.

Example 1. A canvas is molded on a canvas machine of the English company Glas rna & Diside. A roll of sack paper (GOST 2228-62) is installed on special holders located behind the forming chamber. The paper is passed through the firmware mechanism and secured to the reel.

Moving on the conveyor, the paper passes under the molding chamber of the mat, where it is evenly packed with glass fiber sections, resulting from the spilling of minced roving with RBM 10-42 X 60. The roving cutting is carried out on a special cutting unit installed above the molding chamber. The conveyor transports paper with glass fiber sections laid on it (1 weight. Paper for 9.5 weight. Glass fiber) to the node where the chaotically located glass fiber threads are held together by stitching the glass fibers with burrs, which seize individual glass fibers and pull them through bu.magu. The finished stitched material with a number of draw rollers is fed to the winding unit, where it is wound into a roll. Density of glass fiber obtained is 880 g / m. Humidity: 2.3%. Example 2. On electrically insulating paper (GOST 3441-63) is applied in the same manner as in Example 1, chopped roving at the rate of 15.0 wt. h. roving on 1 weight. h. paper , Density of the obtained glass fiber 1500 g / m Humidity I, 5Vo Example 3. Chopped glass fiber is applied on sack paper (GOST 2228-62) using the method described in Example 1 at a rate of 19.3 wt. h. roving on 1 weight. H. paper. Density of the obtained fiberglass 1580 g / m Humidity 1.53% Example 4. Impregnated with the composition of the + MFPM (50:50) s (JL B at the rate of 40 - h) of the composition (in 50 wt. in terms of dry residue) at 60-50 weight of fiberglass mode (tempi are pressed according to the following section l50 ± 5 ° С.) 1; 30-120 sec. Heating of sheets Р О g 180 sec (Closing plates Р О О Vyd.rzhka without pressure (all 30–200 s PIChT.connected) P 0.53 -, 32kgs / cm Prepressing g 30–200 s 2.6 kgf / cm Pressing g 90–200 sec 5.2-Kgf / cm2 Depressing g 9 s Properties of the resulting fiberglass tab 3. given in the invention allows to improve the quality of soft fiberglass, expand the raw material base for the production of canvases, reduce the cost of material (cost of gauze consumed per 1 ton of canvas. 143,248 rubles, and paper - 15.26 rubles). production wastes are reduced (from 75 kg when using gauze to 30 kg when using paper), due to which the coefficients are reduced, consumables are reduced and the working conditions of the environment are improved.

Indicators

on the proposed fiberglass

Density, g / cm

Destructive stress during static bending, kgf / cm

Water absorption,%

Table

Table 2

Fiberglass

on canvas made from gauze

1.0-1.6

Not less than 650 Not more than 8

Density, g / cm

1.15

Bending stress,

Claims (1)

The invention claims 20 operational properties of the material, in a woven material containing the fiber of the substrate, paper is used in a tapered glass roving and substrate, I-1.3 weight. h., while the glass dissociation by the fact that, in order to increase, r ing is 9–20 wt. h Table3 1-1,6 1,291,37