SU925920A1 - Composition for making sound absorbing material - Google Patents

Description

(54) COMPOSITION FOR SOUND-ABSORBING

MATERIAL

one

This invention relates to sound-absorbing materials, namely, a composition for producing a sound-absorbing material.

The closest in composition to the proposed is an anti-noise gasket l, consisting of the following components, wt.%: Plastite (solid

highly plastic

bitumen TU38-101580-75), 0

Alloy wax-ozocerite SPO 1 0

Synthetic latex

SKS-50PG1,0

Chrysotile asbestos (grade 7)

Chalk natural

enriched brand MMS 1, MMS 2 46.5

The disadvantages of this composition are the use of an expensive and scarce chalk component in large quantities.

The purpose of the invention is to reduce the value of the material while maintaining its high (1) isico-mechanical properties.

The goal is achieved by the fact that the composition for obtaining sound-absorbing material based on solid highly plastic bitumen, including a wax-ozocerite alloy, synthetic latex, asbestos and a filler, contains as a filler phos (| yugips or its mixture with chalk at a ratio of 20-40.5 : 6-27 in the following ratio, wt.:

Highly plastic

bitumen41,5-42

Waxoozocerite alloy1-1 .5

Synthetic latex

(dry residue)

Asbestos9-9,5

Foz ({yugips or his

mix with chalk when

ratio

, 5: 6-27 Else

For experiments, plastite is used as well as phosphogypsum, a waste product from the production of chemical plants producing phosphoric acid. It is a white finely dispersed powder, the main part of which is CaSOx. 2H20. Phosphogypsum contains impurities of fluorine and phosphorus pentoxide, its moisture content, the specific surface of phosphogypsum powder 150, at kO ° C phosphogypsum turns into semi-aquatic gypsum (CaSOj 0.5 NXO.

Example 1. Into the heated plutbite for 0.5 h, which is taken in the amount of 41.5 masd, a wax-ozokerite alloy of 1.0 May.5 is added, mixed for 3 min, 0.5 h of chalk are introduced ( total amount of 27 wt.%) and 0.5 h of phosphogypsum (total amount 20 May.5) and asbestos 9 wt. and mix for 5 minutes, charge synthetic latex 1.5, Z mix for 10 minutes. Zateu injected, remaining plastbit

1.5, 5 1.5, 0, 0

Plastbit

Wax alloy 1, 0 1.5, 1.5 ozocerite 1.0 1.0

Synthetic latex Note: Duration at 110-120 ° C.

and mix for 2 minutes, add the rest of the chalk and phosphogypsum, mix for 10 minutes. Process temperature 120 C. Blend ingredients

leaf, roll and test according to TU 38-105924-75 for anti-noise gaskets.

Examples 2-7 are similar to Example 1, but differ in the content of the components.

The compositions for sound-absorbing material according to examples 1-7 and known are given in table. one.

Physicomechanical indicators of their

are given in table. 2

The data presented in the table indicate that the introduction of phosphogypsum to the ROMPOSITION instead of the expensive and scarce chemical waste of the chemical industry contributes to maintaining the physico-mechanical parameters at the required high level, but at the same time the cost of 1 ton of products and the annual economic effect of 11801.6 p are significantly reduced . or 23603.2 p depending on the variety of melao

Table 1

k2,0

Claims (1)

, 0.5-0.1.0 1.0 process for the preparation of mixtures of 35 min. The invention Composition for the production of sound absorbing material based on solid highly elastic bitumen, including an alloy of wax-ozocerite, synthetic latex, asbestos and filler, characterized by that, in order to reduce the cost of the material while maintaining its high physicomechanical properties, the composition contains as a filler phosphogypsum or its mixture with chalk at a ratio of 5: 6-27 in the following ratio of components, wt.,: Highly plastic 4l, bitumen Alloy wax-ozo kerite 1-1.5 Synthetic latex (dry residue) Asbestos Phosphogypsum or its mixture with chalk at a ratio of 5: 6-27 Else ° Sources of information taken into account during the examination 1. Anti-noise bitumen plots of TS 38-105924 (prototype).