ISO 1624-1978 - 中外标准 - - 1978/9 - 作废
Specification of a method for the determination of the particle size of vinylchloride homopolymer and copolymer resins by sieving under a stream of water, using standard aperture sieves with mesh sizes 0,063 and 0,250 mm. The residues on the sieves are dried and weighed. The percentages of the sieve residues shall be calculated.
CGSB 41-GP-19MA-1978 - 中外标准 - - 1978/9 - 现行
ISO 4059-1978 - 中外标准 - - 1978/9 - 现行
Specification of a laboratory test assembly with the pipe-jointing system to be tested. A water flow of 2 m/s through the pipe assembly is adjusted and the resulting pressure drop is determined.
管道工程系统压头损失聚乙烯压力试验测定塑料管管路管试验塑料材料规范管道配件DeterminationMaterials specificationPEPipe fittingsPipesPipework systemsPlastic pipesPlasticsPolyethylenePressure testsTesting
ISO 3934-1978 - 中外标准 - - 1978/9 - 作废
Describes four types of material, where both resistance to creep under load and weather resistance are essential. Defines requirements for gaskets used in buildings (such as U-channel gaskets). Does not cover structural gaskets of the locking compression type. A table summarizes the general requirements.
ISO 4574-1978 - 中外标准 - - 1978/9 - 现行
Conditioning of 200 parts of plasticiser in the bowl of a planetary mixer at a temperature of 75 C. Addition of 100 parts of the resin to be tested and mixing with the plasticizer. Taking of samples of this mixture at various times, removal of excess of plasticizer by centrifuging and determining the quantity of plasticizer absorbed by the polymer. Plotting a graph, from which can be determined for the polymer under test: - the mean rate of plasticizer absorption (RPA) ; - the hot plasticizer absorption (HPA) at 75 C and 30 min.
聚氯乙烯增塑剂吸收塑料化学试验化学分析和试验Chemical analysis and testingDefinitionsHeatInstrumentsMouldings (shaped section)PlasticizersPlasticsPolyvinyl chlorideSampling methodsTestingVelocityVinyl chloride
ISO 172-1978 - 中外标准 - - 1978/8 - 现行
Specification of a qualitative method of detecting the presence of free ammonia or other volatile bases in phenol-formaldehyde mouldings by the exposure of an indicator paper to the vapour from a moistened powdered sample. It may be used when the absence of free ammonia is a requirement.
氨模制材料塑料铸件酚醛树脂检测酚醛塑料AmmoniaAnalysisCastingsChemical analysis and testingDetectionDetermination of contentMoulded partsMouldings (shaped section)Phenol formaldehydePhenolic plasticsPhenolic resinsPhenoplast moulded materialPlasticsVerification
CNS 4448-1992 - 中外标准 - - 1978/7 - 现行
CNS 4447-1992 - 中外标准 - - 1978/7 - 现行
ISO/TR 4137-1978 - 中外标准 - - 1978/6 - 废止
This report describes a method for the determination of the longitudinal moduls of elasticity of plastics by means of Savarts pendulum. The method is applicable to products for which the characteristic determined is greater than 1500 MPa and which it is possible to prepare specimens from 1 to 5 mm in thickness by cutting. The elasticity of the test piece is employed for the transmission of energy from one pendulum to another, the test piece being used as a support for both pendulums. The amplitude of the oscillations of the driving pendulum gradually decreases until it stops. The time between starting up and the first stopping of the driving pendulum is the half-oscillation period, which is a function of the longitudinal (Young''s) moduls ofelasticity of the specimen in alternating flexure.
规范试验扭转试验弹性模量塑料Modulus of elasticityPlasticsSpecificationsTestingTests
CNS 4396-1992 - 中外标准 - - 1978/5 - 现行