SU929665A1 - Polymeric composition - Google Patents

Description

I

The invention relates to polyuniline polyvinyl chloride (PVC) composite compositions used primarily as insulation material and protective sheaths of electrical wires and cables, as well as for the manufacture of various products — sheets, films, hoses, etc., operated in soil or in the air under conditions of a warm and humid climate, as well as in areas of moderate ca.

When operating under these conditions, PVC materials can be subjected to biological corrosion, as a result of which their physicomechanical and electrical properties deteriorate, weight loss is observed, surface character changes, etc. To prevent such damage caused by bacteria, mold fungi and other harmful organisms, fungicidal additives are added to the polymer compositions.

As fungicides in PVC compositions, such compounds as a complex of charge transfer of 8-hydroxyquinol copper with chloroanilolG}, cetylpyridinium chloride or cetylpyridinium bromide G2} are used.

The disadvantage of these fungicides is their reduction of dielectric PVC compositions.

The closest to the technical essence of the invention is a polymer composition containing 100 wt.h. PVC, mach. a plasticizer, for example dialkyl phthalate, 12, O-ma.ch. lead stabilizer - lead silicate, 3.0 parts m. calcium stearate and ma.ch. fungicide-salicylanilide 3.

A disadvantage of the known composition is a low specific volume electrical resistance with relatively high mushroom resistance. Improving the fungus resistance when salicylanilide is added to the composition leads to an undesirable effect of reducing the specific electrical volume resistance. For example, with the introduction of salicylanilide in the amount of 2-14 May. h, the fungus resistance according to GOST is equal to 0, and the specific volume electrical resistivity according to GOST 5960-72 decreases from 1.810. cc (for a composition without a fungicide) to 9.2 Cc - 6g10 cc (i.e., the volume resistivity decreases by 100-1000 times). The aim of the invention is to increase the volume resistivity of the mushroom-resistant PVC composition. The goal is achieved by the fact that according to the method of PVC compound, containing P6X, plasticized lead stabilizer and fungicide additive, as the latter contains ethylene dichloride-1-2-bis- (dimethylcarboxydimethyl) ammonium of formula ,, Ш 1снгЧ .. ifloO. in the following ratio of components, mac.: Polyvinyl chloride 100 Plasticizer Lead stabilizer .5.0-13.2 Fungicidal additive 0.05-3.0 As a plasticizer, the composition contains dialkyl phthalate (DAP), dioctyl phthalate (DOP), dioctyl sebacate ( DOS), didodecylphthalate (DDDF), tetraoctylpyromellitate (TOPM), trioctyl trimellitate (TOTM). As a lead stabilizer, the composition contains a mixture of coprecipitated dibasic salts of lead phthalic acid and synthetic fatty acid fraction, plasticizer and diphenylolpropane (CSCS-1f), tribasic lead sulfate (TOSS), lead silicate, dibasic lead phthalate (DOPTS) and two main lead stearate DOSS). Ethylene-1 -2-bis- (dimethylcarbodedoxymethyl) ammonium dichloride has the technical name atony. The use of etoni as a fungicidal additive significantly increases the fungus resistance, the specific volume electrical resistance of the PVC composition. Example. 100 ma.ch. PVC, 13.2 mach. paste-like lead stabilizer CKCK-I, 45.0 wt.h. dioctyl phthalate, 0.05 wt. These are stirred at 90 ° C. for 0 min. The resulting composition rolls at 16NS for 7 minutes and get a film thickness of 0.5-1.0 mm. The obtained samples are tested for fungus resistance in accordance with GOST in a p tball system. The lower the score, the higher the fungus resistance. The specific volume electrical resistance of the samples is determined according to GOST 5960-72. The test results are shown in the table. Examples 2-8. The composition of the compositions and their properties are given in the table, face. EXAMPLE (For Comparison). The composition of the compositions and their properties are shown in the table.

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. Table continuation

13.2

0.05

100

50

0.5

7.0

0.5

100

50

pig10

0.5 0.5

100

70

2.0

7

0.5

100

25

20

6

0.5

0.5

100

ten

60

Dofts

1, Y01 O

H

2 "10

,14

1.0-10

0.85-10 O

0, O

0, o

9296658

Claims (3)

Continuation of the table From the data in the table it can be seen that the introduction of etoni in the amount of 0.05-3.0 wt.h. allows to increase the specific volume electrical resistance of the mushroom-resistant composition to (0.7-2.0) .. cm (examples 1-10). The introduction of etoni in the amount of less than 0.05 mach. and greater than 3.0 parts by weight, does not improve the dielectric properties of the mushroom-resistant PVC-com position (examples 11-13). Thus, a PVC composition containing etonium as a fungicide additive has a specific volume electrical resistance significantly exceeding the specific volume electrical resistance of mushroom resistant compositions containing as: salicylanilide fungicides (examples 12-13) Formula of the invention Polymer composition containing polyvinyl chloride, plasticizer, lead stabilizer and fungicide additive, characterized in that, in order to increase the specific electrical resistance of the mushroom-resistant Songs, it contains as fungicidal additive ETHYLENE-1-2-bis (dimetilkarbodedoksimetil) ammonium of formula the following component ratio, May. including: Polyvinyl 100 Plasticizer Lead emulsifier5, 0-13.2 Fungicidal additive 0, Sources of information taken into account during the examination 1. USSR author's certificate number 5Р5666, cl. From 08 L 27/06,} 97k. 2. USSR author's certificate H- 83t06, cl. From 08 L 27/06, 1973. 3. Technological regulations for the production of polyvinyl chloride plaieticate 1G 92 Vladimirkogo chemical plant. Approved 28.03.7 (prototype).