23 - Curriculum Development Centre, Kalamassery

UNIT – V5.1.0 Understand the test methods and specifications of plastics and composite products5.1.1 Describe the standards and specifications of various plastic and composite products5.1.2 Describe the test procedures & specification for wire and cable, PVC pipe, disposablesyringe, blood bag5.1.3 Explain the test procedures and specifications of containers, helmet, electricalswitches, sheets, food packaging, water tank5.1.4 Predict the specifications based on performance and service requirementsCONTENT DETAILSUNIT – IINTRODUCTION AND MATERIAL TESTINGImportance of quality assurance and TestingQuality – definition. Modern quality concepts, importance of quality control in polymer industry.Standards and specifications. Different standard organization. Procedure for accreditation of ISIcertification. Role of standard organization in quality assurance and customer satisfaction.Importance of calibration of equipments in quality control & testingRaw material testingSpecification test for ISNR and latex concentrateSignificance, principle and method of tests for ISNR – dirt content, volatile mater, ash content, N 2content, Po and PRI.Technical specifications of ISNR as per ISSpecification test for concentrated latexSignificance, principle and methods of the following tests – KOH No, VFA number mechanicalstability time, Mg content, sludge and coagulum content, sp gravity, viscosity, TSC, DRC, Alkalinityetc.Technical specifications for conc. Latex as per BISUNIT – IIPHYSICAL PROPERTIESMechanical propertiesMethod of testing, specimen standards, principle of conditioning, equipment used, significance offollowing tests relevant to plastics and rubbers – TS, tear strength, tension set and compression set,hardness, Abrasion resistance, resilience, flex cracking, impact strength, creep and cold flow, fatiguefailureThermal propertiesThermal conductivity, flammability, vicat softening temperature, M.P, brittleness, sp. heat, HDTElectrical propertiesDielectric strength, dielectric constant, arc resistanceChemical propertiesEnvironmental stress crack resistance, water absorption, aging resistance for rubber productsOptical propertiesRefractive index, stress optical sensitivityUNIT – IIIImportance of process ability testsPrinciple, method of testing, equipments used for cure – characteristic study. Illustration with graphsand advantages of cure meters.Different types of cure meters – Mooney viscometer, Rheometer, recent developments in Rheometer.Testing of viscosity, gel time, sp gravity. Storage life and working lifeof resinous materials.129