SU618387A1 - Fluorine rubber-base compound - Google Patents

Description

The invention relates to rubber industry, in particular to rubber based on fluororubber,. A known rubber mixture based on rhork rubber, such as perfluoropropylene and vinyl fluoride fluoride rubber (SKF-26 fluorine rubber), including skiphod, filler, and vinyl ester rubber, such as syrup-26,), is used for the treatment of hearth, 26, rubber, rubber, rubber, rubber, rubber, rubber, rubber, rubber, rubber. - dioctyl sebacate, a fatty acid, in particular stearic acid, and intermoser alcohols FlJ.

This rubber compound is used to obtain easily treatable casting and extrusion compositions and is characterized by good processability and relatively high physical and mechanical properties.

However, rubber from this mixture does not have sufficiently high adhesive properties to the metal, which makes it difficult to use it as a lining for shafts intended, for example, for the textile industry. In addition, the application in the well-known rubber mixture is specified x

components lowers the heat resistance of rubbers and their resistance to organochlorine solvents.

The aim of the invention is to improve the adhesion properties, heat resistance and resistance to organochlorine solvents of rubber from a rubber compound.

The goal is achieved by the fact that the proposed rubber mixture contains the product of radiation telomerization 3,3,3-trifluoropropene (himfan) as a plasticizer in the following ratio of components, parts:

Fluororubber 100

Magnesium oxide 5-20

Filler15-45

Specified plasticizer5-30

These products are obtained in the condensed phase in the dose range of 1-500 Mrad.

Examples illustrating the invention (see Table 1),

The composition of the studied rubber compounds is given in table. 1. Fluoroligomers (Himfan, Oxyphimo and Himfanonitrile) are introduced into the mixture in the amount of 5-ZO wt per 1OO wt.h. rubber Himfan is a product of the polymerization of Z.Z.Z-trigorpropen. It is a viscous liquid whose molecular weight is I-IO -SlO. The chemical structure of the chemical laboratory yH5 - (: n- (n- (L12) CF, CF, where K -1 - 50 O. Oxykhimfan is a product of radio-ionic copolymerization of 3,3,3-treyfluoropropene and the corresponding alcohol. Chemical structure of its HO-X- ( CH-CH) „-X-OH. Where (CH ,, i- (W 1-4) CE- (Hg2 (jHj) - and TH 1Hz Molecular Weight 1-1O-51O Chimfanonitrile - product of radiation copolymerization 3 , 3,3-trifluoropro and organic nitrile.It has the following Yai and a chemical structure: Zh dd-lCH-GHj-ln-X- Snzh where (СН2) d-- 0 ""). -№ 1 - 500 24 Molecules Mass of 1 ° 10 -5 10. In addition to the plasticizer, the necessary components of the rubber mixture are magnesium oxide. and fillers (barium sulfate and calcium fluoride). In all cases, the mixtures are prepared and then vulcanized by conventional methods using conventional equipment. The properties of the mixtures and rubber materials are presented in Table 2. From the data in this table it is clear that the rubber compounds offered have high physicomechanical and elastic properties, and rubber from them - adhesion properties (1.4-2 times higher), heat resistance (1.3-1.4 times) and organochlorine solvents ( 1.2-4 times).

Claims (1)

1. Patent of France N 2140509, class, C 08 C 29/00. 1973.