Polymers and Plastics

Residual Vinyl Chloride Monomer Content ASTM D4443

Scope: The ASTM D4443 test technique can be used to determine the residual vinyl chloride monomer  (RVM) content of vinyl chloride homopolymers and copolymers down to a concentration of 5  ppb. This test method can be used with any polymer that can be dissolved in a suitable solvent,  such as resin, compound, film, bottle walls,...

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Butylated Hydroxy Toluene in Polymers of Ethylene and Ethylene–Vinyl Acetate ASTM D4275

Scope:  ASTM D4275 test technique utilizes gas chromatography for the detection of butylated hydroxytoluene (BHT) in ethylene polymers and ethylene-vinyl acetate (EVA) copolymers.  Stabilizers used in the production of polypropylene are separated and evaluated in order to link performance characteristics to the polymer composition. Flame ionization is used to detect the substance, and internal or...

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Determination of Carbon Black Content in Polyethylene Compounds ASTM D4218

Scope: ASTM D4218 test method is used to determine the carbon black content in polyethylene compounds by the Muffle-Furnace technique. The muffle furnace is an important laboratory testing tool that is used to test a variety of materials. With this technique, ASTM D4218 is aimed to provide improved temperature uniformity and isolate heated materials from...

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Average Molecular Weight of Polymers By Light Scattering ASTM D4001

Scope: ASTM D4001 test method outlines how to use the light scattering method to determine the weight-average molecular weight Mw of polymers. The weight-average molecular weight, when combined with the average molecular weight, provides a useful estimate of the molecular-weight distribution’s breadth. This information on molecular weight also aids in the calibration of molecular weight...

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Translaminar Fracture Toughness of Polymers ASTM E1922

Scope: The standard test method Translaminar Fracture Toughness of Polymers ASTM E1922 is used to determine the parameter KTL under opening mode loading, is a measure of a polymer matrix composite laminate’s resistance to notch-tip damage and effective translaminar crack propagation. KTL data is used to set material processing, component inspection criteria, test speed, and...

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Logarithmic Viscosity Number of Poly Vinyl chloride (PVC) ASTM D3591

Scope: ASTM D3591 test method helps calculate the logarithmic viscosity number of PVC, which provides details about the processing and other applications. The effect of temperature and severe conditions on the viscosity number of PVC is studied. The purification and compounding techniques for the resins are determined. The resin is freed from plasticizer and insoluble...

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Vinylidene Unsaturation in Polyethylene by Infrared Spectrophotometry ASTM D3124

Scope: ASTM D3124 test method studies the characteristics of the vinylidene group. The chemical and physical properties of the resin affected by the different types of olefinic groups are determined. The information obtained from the study can help in identifying and characterizing unknown resins or other blends of it. Vinylidene unsaturation plays a significant role...

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Particle Size (Sieve Analysis) of Plastic Materials ASTM D1921

Scope: ASTM D1921 test method measures particle size distribution which is important in lot-to-lot uniformity. The handling and processing characteristics are determined and dealt with. Based on the calculations, the daily application of plastic materials is decided. Test Procedure: Sieves should be sufficient to cover the particle sizes and should be coated such that the...

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Apparent Density, Bulk Factor, and Pour ability of Plastic Materials ASTM D1895

Scope: The ASTM D1895 test method forms the standard for performance evaluation and packaging/fabrication uses of plastic materials like powders and granules. The fluffiness of the material and volume change is measured. The handling properties and readiness of the material are determined, and delivery of uniform weights is ensured. Test Procedure: A funnel is inserted...

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Dilute Solution Viscosity of Ethylene Polymers ASTM D1601

Scope: ASTM D1601 is used to determine the dilute solution viscosity of ethylene polymers at 135°C, and it presents problems not usually encountered in viscometry. It works with a wide range of ethylene polymers with densities ranging from 0.910 to 0.970 g/cm2. It is a valuable tool for characterizing ethylene polymers and their processing characteristics. ...

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The density of Plastics by the Density-Gradient Technique ASTM D1505

Scope: The standard test method, Density of Plastics by the Density-Gradient Technique ASTM D1505, determines the density of plastic materials. This test procedure is intended to produce findings that are accurate to within 0.05 percent. The density of a solid is a readily quantifiable attribute that is widely used to track physical changes in a...

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Heat Aging Without Load ASTM D3045

Scope: ASTM D3045 test is standard practice to define the exposure parameters for determining the resistance of plastics to oxidize or degrade when placed in hot air for an extended period of time. Polymers or plastic materials exposed to elevated temperatures than the normal temperature for a longer period of time will cause some degradation...

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Coated Fabrics Abrasion Resistance ASTM D3389

Scope: ASTM D3389 test is used for determining the abrasion resistance of fabrics coated with plastics or rubber in end-use performance conditions. This test has two methods: Method A for abrasion to endpoint and Method B for abrasion for a specified number of cycles with determining mass loss. Test Procedure: In the ASTM D3389 test,...

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Tensile-Impact Energy test ASTM D1822

Scope: Tensile-Impact Energy test by ASTM D1822 calculates the energy needed to break samples of plastics or electrically insulating material by a pendulum, under a high-speed tensile load at stated conditions. This test is useful for rigid, very thin and flexible materials. A similar test method is ISO 8256.  Test Procedure: For the Tensile-Impact Energy...

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Resistance of Synthetic Polymeric Materials to Fungi ASTM G21

Scope: Fungal resistance of plastics and synthetic polymeric materials is determined by ASTM G21. The test polymeric materials can be in the form of fabricated and molded articles, sheets, tubes, rods, and film materials. The changes in mechanical, optical, and electrical properties are also determined. Usually, the synthetic polymeric materials are resistant to fungi but...

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