RU1775428C - Polystyrene composition - Google Patents

Abstract

The inventive composition contains, wt.%: Polystyrene 33-69; divinyl-styrene thermoplastic elastomer 6-12; melem 5-15; tuff 20-40. The composition is obtained by mixing the components. Test samples are prepared by injection molding at 200-220 ° C. 2 tab.

Description

The invention relates to compositions of materials used in the building materials industry, as components and parts in household appliances, pipes for pumping solutions of acids and alkalis, etc.

The closest in technical essence and the achieved result is a polystyrene composition comprising polystyrene, divinyl styrene thermoplastic elastomer and mineral filler - tuff with a particle size of 20 microns.

The known composition has the following disadvantages:

low tensile strength;

low heat resistance;

low fluidity.

The purpose of the invention is to increase tensile strength, heat resistance and fluidity.

This goal is achieved by the fact that the known composition comprising polystyrene, divinyl styrene thermoplastic elastomer and a mineral filler with a particle size of 20 μm additionally contains 2,6,10-triaminosimheptazin-melem in the following ratio, wt.%:

Polystyrene 33-69

Divinyl styrene thermoplastic elastomer 6-12

Melem5-15

Tuf20-40

Characterization of the starting components.

Polystyrene: general purpose GOST 20282-86E; brands ЕН, mol.m. 1000000 company Germany Soda factory ACE.

Divinyl styrene thermoplastic elastomer: DST 30-TU 38 103267-80; Solplene 422 (see Hull Tech plast 1983, 38, No. 441, 19-23).

Tufa, Arm. SSR, finely divided average particle size of "20 microns. Chemical composition,%: SI02 - 67.88, ABOz-15.41, Fe20z-3.13, CaO-3.17. MdO - 1.52, N320 + K20 - 7.58, TUa - 0.52, pp 0.87.

Melem 2,6,10 triaminosimheptazine TU-6-03-29-3-75 CeH (MH2) s.

The technologies for preparing the proposed composition composition and products based on it are carried out on serial equipment using a two-stage mixer. The components are mixed and loaded into the extruder. Test samples are prepared by injection molding at a rate of &

v4 4

ate

Ј

| Che

with

stew 200-220 ° C and a mold temperature of 50-55 ° C. The exposure time is within 10-30 s.

Impact strength tests of the samples were carried out according to the Charpy method without notching according to ST SEV 1491 79. Tensile strength tests were carried out according to Art. CMEA 1199-78.

Tests for heat resistance according to Vika according to GOST 15065-69.

The determination of the yield index is carried out according to ST SEV 896-78,

Specific examples of the proposed composition and control examples for substantiating the declared limits of the contents of the components are given in Table 1, and the properties in Table 2.

0

5

Claims (1)

SUMMARY OF THE INVENTION A polystyrene composition comprising polystyrene, divinyl styrene thermoelastoplast and a mineral filler is tuff, characterized in that, in order to increase the tensile strength, heat resistance and fluidity, it additionally contains 2.6, 10-triaminosimheptazine-melam in the following the ratio of components, wt.%: Polystyrene 33-69 Divinyl styrene thermoplastic elastomer 6-12 Tuff. 20-40 Melem5-15 Examples of the proposed composition  g-t-; mon Polystyrene general purpose polystyrene GOST 20282-B6E33 brand Eh Germany Divinyl styrene thermoplastic elastomer DST 3012 Solplene J22 - Melem15 2.6-10 triamino-simheptaene Tuff 40 Table 1 - Test cases : i: iz :::::: 28 86 33 51 69 12 15 ,1, 96 105 16 0.5 40 30 20 42 8.5 Table 2 450-600 85 , 69-1.77 875 92 3.8 100 78 2.8 3.0