Unplasticized polyvinyl chloride

Unplasticized polyvinyl chlorides (type I) have excellent resistance to oxidizing acids other than concentrated and to most nonoxidizing acids. Resistance is good to weak and strong alkahne materials. Resistance to chlorinated hydrocarbons is not good. Polyvinyhdene chloride, known as Saran, has good resistance to chlorinated hydrocarbons. 

ISO 105-X10 Textiles - Tests for colour fastness - Part XIO Assessment of migration of textile colours into polyvinyl chloride coatings ISO 264 1976 Unplasticized polyvinyl chloride (PVC) fittings with plain sockets for pipes under pressure - Laying lengths - Metric series ISO 265-1 1988 Pipes and fittings of plastics materials - Fittings for domestic and industrial waste pipes - Basic dimensions Metric series - Part 1 Unplasticized poly(vinyl chloride) (PVC-U)... 

ISO 2898-1 1996 Plastics - Plasticized poly(vinyl chloride) (PVC-P) moulding and extrusion materials - Part 1 Designation system and basis for specifications ISO 2898-2 1997 Plastics - Plasticized poly(vinyl chloride) (PVC-P) moulding and extrusion materials - Part 2 Preparation of test specimens and determination of properties ISO 3114 1977 Unplasticized polyvinyl chloride (PVC) pipes for potable water supply -Extractability of lead and tin - Test method... 

ISO 3460 1975 Unplasticized polyvinyl chloride (PVC) pressures pipes - Metric series -Dimensions of adapter for backing flange... 

ISO 3603 1977 Fittings for unplasticized polyvinyl chloride (PVC) pressure pipes with elastic sealing ring type joints - Pressure test for leakproofness ISO 3604 1976 Fittings for unplasticized polyvinyl chloride (PVC) pressure pipes with elastic sealing ring type joints - Pressure test for leakproofness under conditions of external hydraulic pressure... 

ISO 4439 1979 Unplasticized polyvinyl chloride (PVC) pipes and fittings - Determination and specification of density... 

ISO/TR 7024 1985 Above-ground drainage - Recommended practice and techniques for the installation of unplasticized polyvinyl chloride (PVC-U) sanitary pipework for aboveground systems inside buildings... 

ISO/TR 7073 1988 Recommended techniques for the installation of unplasticized poly (vinyl chloride) (PVC-U) buried drains and sewers ISO 7387-1 1983 Adhesives with solvents for assembly of PVC-U pipe elements -Characterization - Part 1 Basic test methods ISO 7508 1985 Unplasticized polyvinyl chloride (PVC-U) valves for pipes under pressure -Basic dimensions - Metric series... 

Because of the presence of large polar pendant groups, which restrict molecular motion, unplasticized polyvinyl chloride (PVC), which has as the following repeating unit,... 

Polyvinyl chloride is processed into a number of forms by including additives. Additives are used to vary the properties of PVC so that it can be made soft and flexible or hard and rigid. Additives are also used to inhibit decomposition as a result of exposure to sunlight, ozone, and chemicals. Plasticizers are the primary additive included in PVC materials. Di(2-ethylhexyl) phthalate (DEHP) and a host of other phthalates are the most common plasticizers. Plasticizers impart flexibility, thermal stability, strength, and resilience to PVC compounds. PVCs without plasticizers are classified as UPVC the letters stand for unplasticized polyvinyl chloride. UPVC is rigid and used for conduit, containers, gutters, and floor tiles. Other common PVC additives are biocides, lubricants, and pigments. 

Samples were kindly supplied by Allied Chemical Corp. The unplasticized polyvinyl chloride contained 4.7 parts by weight of stabilizer and lubricant per 100 parts of PVC. The plasticized sample had 40 parts of dioctyl phthalate and 2.5 parts of stabilizer per 100 parts of polymer which is equivalent to a total plasticizer content of 30 weight %. 

PC PE PES PET PF PFA PI PMMA PP PPO PS PSO PTFE PTMT PU PVA PVAC PVC PVDC PVDF PVF TFE SAN SI TP TPX UF UHMWPE UPVC Polycarbonate Polyethylene Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde Polyfluoro alkoxy Polyimide Polymethyl methacrylate Polypropylene Polyphenylene oxide Polystyrene Polysulfone Polytetrafluoroethylene Polytetramethylene terephthalate (thermoplastic polyester) Polyurethane Polyvinyl alcohol Polyvinyl acetate Polyvinyl chloride Polyvinyl idene chloride Polyvinylidene fluoride Polyvinyl fluoride Polytelrafluoroethylene Styrene-acrylonitrile Silicone Thermoplastic Elastomers Polymethylpentene Urea formaldehyde Ultrahigh-molecular-weight polyethylene Unplasticized polyvinyl chloride... 

Example 5.1 Thermal Degradation Characterization Thermal degradation is characterized by two temperature-dependent parameters, the induction time 6 (7) for the onset of degradation, as shown in Fig. E5.1(a) for unplasticized Polyvinyl chloride (PVC), and the rate of degradation. The latter is shown in Fig. E5.1(b) in terms of the rate of change of the consistency index of the Power Law parameter, as a function of time and temperature, and can be expressed by the following equations ... 

Fig. 13.10 Filling time versus entrance melt temperature at three constant injection pressures and filling time versus injection pressure at three constant entrance melt temperatures. Mold dimensions are R = 9 cm, H — 0.635 cm. The polymer is unplasticized polyvinyl chloride (PVC) of n = 0.50, m(202°C) = 4 x 104 (N s7m2), A = 6.45 x 10 8, AE = 27.8 (kcal/g mole), p = 1.3 x 103 (kg/m3), Cp — 1.88 x 103 (J/kg K), and k — 9.6 x 10 2 (J/m s K). [Reprinted by permission from R C. Wu, C. F. Huang, and C. G. Gogos, Simulation of the Mold Filling Process, Polym. Eng. Set, 14, 223 (1974).]...

ISO 3127 (1980), International Standard Unplasticized Polyvinyl Chloride (PVC) pipes for the transport of fluids-Determination and specification of resistance to external blows, ISO Standards Handbook 21, Volume 3, Plastics, Second edition 1990, Switzerland. 

Unplasticized polyvinyl chloride (uPVC) is a commonly used material for mains and domestic potable water piping. The additives used in uPVC include heat stabilizers to reduce decomposition of the uPVC during manufacture. Stabilizers are often lead salts. It has been shown that leaching of lead can occur, but this seems to be significant only for new uPVC pipes (Packham, 1971 Poels and Dibbets, 1982). In some countries (e.g. France) the application of lead salts as stabilizers is not allowed. 

It was soon found that many polymers with poor weathering properties could be transformed by compounding with stabilizers such as antioxidants, UV agents, carbon black, and so on, into materials which were suitable for external use, well-known examples being synthetic rubbers, unplasticized polyvinyl chloride (UPVC) and polypropylene. 

Unplasticized polyvinyl chloride Tubes, window frames, siding, rain gutters, bottles, thermoformed packaging, etc. 

Unplasticized polyvinyl chloride Unsaturated polyester Unsaturated polyester, with glass fiber... 

Plastics—Unplasticized Polyvinyl Chloride (PVC-U) Moulding and Extrusion Materials— Part 1 Designation System and Basis for Specifications... 

Plastics—Unplasticized Polyvinyl Chloride (PVC-U) Moulding and Extrusion Materials— Part 2 Preparation of Test Specimens and Determination of Properties Plastics—Polystyrene (PS) Moulding and Extrusion Materials—Part 1 Designation System and Basis for Specifications Plastics—Polystyrene (PS) Moulding and Extrusion Materials—Part 2 Preparation of Test Specimens and Determination of Properties... 

DIN 16888-1 [244] Determination of chemical resistance of thermoplastics pipes part 1 polyolefin pipes, part 2 unplasticized polyvinyl chloride (PVC-U) pipes... 

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