New plasticizers for PVC-compositions in construction

The work is devoted to the analysis and development of effective types of plasticizers for a wide range of finishing (linoleum) and insulating building materials (insulation tape, cable plastic) with improved mechanical and technical characteristics. In connection with the growth of consumption of finishing and insulating materials, the development of new formulations of PVC compositions for construction with the use of new plasticizers is not only an urgent task, but also within the framework of construction it allows solving the problems of effective quality control of a finished PVC composition. This paper presents the results of the tests of octylphenoxyethylphtalates as a new chemical additivies for plasticizing PVC in the formulation of the upper and middle layers of linoleum, adhesive film and cable compound О-40 rec. ОМ-40 (black). It is noted, that obtained samples of adhesive tape with their main characteristics (tensile strength at break, extension coefficient, shatter point, thermostability) correspond to technical specification (TS) 2245-001-00203312- 2003. Obtained samples of plasticate were analyzed according to GOST 5960-72 rev. 1-9 (PVC plasticate for isolation and protective covers of wires and cables), by main characteristics (specific insulation resistance, tensile strength at break, breaking elongation, shatter point) are not inferior to commercial prototypes, and such characteristics as «Weight loss at 160о С» and «Water absorption» are significantly lower. It is noted that, in case of using octylphenoxyethyl phtalates, obtained samples of films of upper and middle layers of linoleum analyzed according to norms of STI 00203312-100-2006 have a higher melt flow rate. In addition, films obtained through introduction of suggested plasticizers possess a low value of extractability by gasoline and oils.