Non-woven material

 

(57) Abstract:

The inventive material is composed of fibrous layers bonded together by hypoproteinemia made of mineral and silicate fibers. The ratio of the fibers is, wt.%: silicate fiber - 65-3, mineral fiber - 35-97. table 2.

The invention relates to the chemical industry, namely, non-woven glass fiber insulation materials derived from waste textile glass continuous fiber, and can be used in the textile industry.

Known in the textile industry of non-woven fibrous material [1] containing a mixture of sealed hypoproteinemia fibrous thread-mass recovered from sewing scraps of cotton fabrics in the amount of 50-60% by weight of the material and the PVC shrinkable fibers in the amount of 20-30% by weight of the material. Nonwoven fibrous material further comprises a polyester fiber with the remnants of the latex in the amount of 20-30%

The disadvantages of this material are low temperature resistant polyvinyl chloride (50oC) and poliefiry (175oC) fibers, as well as the Flammability of the cotton hair is also Known multilayer nonwoven material [2] contains two layers haloprogin paintings of natural chemical fibers or mixtures thereof, sewn filaments knitted weave, between which there is at least one layer of fibrous cloth made of natural fibers or mixtures thereof, bonded hypoproteinemia with one of the layers holstering cloth constituting 20-12 wt.h. from the mass of non-woven material. The content of the tufting yarns haloprogin the canvas is 30-49 wt. including the weight of the blade, and the content of fibers in haloprogin paintings and fibrous canvas is 6-21 wt.h. from the mass of material.

The disadvantage of this material is the low stability of the used natural (cotton) and chemical (rayon) fibers to a heat treatment, as well as the complexity of the technology.

Widely also known nonwoven material [3] insulation purposes, containing three fibrous layer made of complexes shtabelirovaniya waste fiberglass, bonded hypoproteinemia.

The disadvantage of this material is not high enough performance characteristics: relatively high conductivity, the lack of resistance to temperature is raised needle-punched nonwoven material heat and sound insulation purposes, including mineral and glass fiber (as mineral fibers are asbestos fibers) [4]

The disadvantages of this material are not sufficiently high operational properties (conductivity, temperature), the difficulty of obtaining asbestos fibers. In addition, the presence of non-woven asbestos fibers are carcinogenic entails the violation of a safe work environment.

The objective of the invention is to develop a nonwoven material having improved operating characteristics (over low heat conductivity, higher temperature), the improvement of working conditions.

The solution is achieved by the fact that non-woven material consisting of interconnected hypoproteinemia fibrous layers containing mineral and silicate fiber, the ratio of the fiber weight. is: silicate 65-3, mineral 35-97.

The proposed material is prepared on punched aerodynamic lines LIP-210 as follows.

Fibrous mass consisting of a mixture of shtabelirovaniya glass and basalt fiber length of 30 to 80 mm of a given composition, after mixing serves to deposited in the hopper and in the form of a continuous fibrous layer stacked on the feeding conveyor Shipley machine.

Through feed rollers Shipley machine fibrous layer is removed from the supply conveyor and is fed to the main drum: this main drum and the work rolls layer is broken into separate parts, which in turn are divided into smaller, being then repeated intensive rasseyaniyu, loosening, mixing.

Well loosened, mixed fiber with removable drum under the action of centrifugal force is discharged in a horizontal mine site hollofibre consisting of two perforated drums, in which a continuous stream of air, occurring due to the vacuum generated inside the perforated drums, picked up and moved in the direction of the latter, forming on the surface of the fibrous canvas.

With perforated drums formed the canvas is removed removable shafts, served on the conveyor needle machine, compacted, after which it is directed to the area hypoproteinemia first needle machines, where multiple ipop Okolow on 1 cm2) is binding, sealing, hardening, i.e. the transformation in needle-punched fabric. Then needle-punched fabric is fed to the second needle machine for final hypoproteinemia (density perforation of the middle part of the canvas is 27-36 punctures on 1 cm2, edges 40-54 punctures on 1 cm2). The finished fabric is wound around the rolling shaft in a roll on the rolling pin.

Example 1. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya glass fibers brand BS-200 and shtabelirovaniya thin basalt fibers located in the ratio of the weight. glass fiber 70, basalt fiber 30. Width 1376,7 mm. Thickness paintings of 5.6 mm Surface density 1009,0 g/cm2. The breaking load of 41.9 kg.

Example 2. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya glass fibers brand BS 200 and shtabelirovaniya thin basalt fibers located in the ratio of the weight. glass fiber 50, basalt fiber 50.Width 1386,0 mm Thickness of the blade is 5.5 mm Surface density 1107 g/cm2. The breaking load of 61.9 kg.

Example 3. Needle pattabiraman thin basalt fibers, located in the ratio of the weight. glass fiber 30, basalt fiber 70. Width 1427,0 mm. Thickness paintings of 5.8 mm Surface density 693,0 g/m2. The breaking load of 43.1 kg.

Example 4. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya glass fibers brand BS-200 and shtabelirovaniya thin basalt fibers located in the ratio of the weight. glass fiber 65, basalt fiber 35. Width 1404 mm Thickness paintings of 5.9 mm Surface density 1025,0 g/m2. The breaking load of 44.9 kg.

Example 5. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya glass fibers brand BS-200, shtabelirovaniya thin basalt fibers located in the ratio of the weight. glass fiber 35, basalt fiber 65. Width 1426 mm Thickness paintings of 5.8 mm Surface density 681,3 g/m2. The breaking load 55,8 kgf.

Example 6. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya thin basalt fibers, shtabelirovaniya glass fibers brand BS-200, located in the ratio of the weight. glass fiber 3, batala 51,6 kgf.

Example 7. Needle-punched fabric is made similarly to the above-described method of shtabelirovaniya glass fibers brand BS-200. Width 1409,3 mm. Thickness paintings of 5.9 mm Surface density 1047,0 g/m2. The breaking load 53,2 kg.

In all these examples, the non-woven fabric was made from a needle-punched aerodynamic car LEAH-210.

In table. 1 shows the physico-mechanical characteristics of the inventive non-woven material manufactured according to examples 1-7.

On the strength characteristics of the inventive non-woven material (breaking load) is not inferior to the prototype, the strength of which varies depending on the percentage content of asbestos and glass fibers, reaching a maximum value at the maximum content of the glass fibers.In table. 2 shows the results of determination of thermal conductivity of the inventive nonwoven material in accordance with GOST 7076-87.

From table. 2 that the inventive non-woven material manufactured according to examples 1-7, thermal insulation properties superior to the prototype (thermal conductivity of the inventive nonwoven material is in the range of 0.04-0,042 W/m K, while teploprovodnost-0,042 W/(m K).

The content of basalt and glass fibers in the nonwoven material was determined experimentally.

The content of basalt fibers in the nonwoven material is less than 35% not significantly impact on the improvement of performance, which reaches the highest value when the content of basalt fibers is equal to 97%

The use of the inventive nonwoven material by including in its composition of basalt fiber will allow to widen the temperature range of its application (for basalt fibers it is from -268oC to +700-900oWith; to asbestos fibers the maximum temperature limit is +600oC).

In addition to the above the use of this material will give you the opportunity to fully process the waste textile basalt and continuous glass fibers, to improve working conditions, excluding the production of the carcinogen is asbestos fiber.

Comparative analysis of the prototype shows that the inventive non-woven fabric characterized in that the ratio of the fiber weight. is: silicate 65-3, mineral 35-97.

Thus, the claimed technical solution meets the criterion of "Newley non-woven material does not follow from the prior art, and therefore meets the criterion of "inventive step".

Set forth in the application data confirm that the technical solutions according to the criterion of "industrial applicability".

Non-woven material consisting of interconnected hypoproteinemia fibrous layers containing mineral and silicate fibers, characterized in that the ratio of fibers of wt.

Silicate 65 3

Mineral 35 e

 

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3 cl, 2 tbl, 6 ex

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EFFECT: improvement of material physical properties; reduction of ecological stress to environment and reduction of material and technical consumption at its recovery.

1 tbl, 1 ex

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