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GB/T 23652-2009: Plastics -- PVC resins -- Determination of compacted apparent bulk density
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GB/T 23652-2009	English	154	Add to Cart	3 days [Need to translate]	Plastics -- PVC resins -- Determination of compacted apparent bulk density

GB/T 23652-2009: Plastics -- PVC resins -- Determination of compacted apparent bulk density

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Plastics. PVC resins. Determination of compacted apparent bulk density ICS 83.080.20 G32 National Standards of People's Republic of China GB/T 23652-2009/ISO 1068. 1975 Plastics - Vinyl chloride homopolymer and copolymer resins Determination of the apparent density of the tap (ISO 1068. 1975, IDT) Posted 2009-04-24 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is equivalent to using ISO 1068. 1975 "Plastics - Vinyl chloride homopolymer and copolymer resins tap apparent density" (in English). For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove the preface to the international standards; d) In Chapter 1, "note" provides a revised adoption ISO 60 national standards GB of data in the form of sexual content/T20022. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of plastic PVC resin product Club (SAC/TC15/SC7) centralized. This standard was drafted. Jinxi Chemical Industry Research Institute, Yichang Yihua Pacific Cogeneration Co., Ltd., Xinjiang Zhongtai Chemical Co., Ltd. The main drafters of this standard. Tan Chen Lijuan, Qi Yulin, FORESTRY AND Zheng Xinzhou. Please note that some of the content of this standard may involve patents. The standard release mechanism should not bear the responsibility to identify these patents. GB/T 23652-2009/ISO 1068. 1975 Plastics - Vinyl chloride homopolymer and copolymer resins Determination of the apparent density of the tap

1 Scope

This standard specifies the method for vinyl chloride homopolymer and copolymer resins tap apparent density. Note. non tap apparent density can be based on ISO 60 (or GB/T 20022) "Plastics - Determination of apparent density from the provisions of the molding material flowing out of the funnel." Principle 2 A known mass of a vinyl chloride homopolymer and copolymer resins placed in precise graduated cylinder and vibration under given conditions. The resin Quality and volume calculation tap after tap apparent density.

3 Instrument

3.1 vibration machine, as shown in FIG. Since (3 ± 0.2) mm drop height (100 to 250) times per minute. Cylinder seat quality (450 ± 20) g. 3.2 Precision graduated glass cylinder, the volume of 250mL, the volume of 2mL indexing and no timescale portion of at least 50mL. An inner diameter of about 38mm, the quality of (220 ± 40) g (see Figure 1). 3.3 metal piston diameter slightly smaller than the inner diameter of the cylinder. 3.4 Balance laboratory, weighed to the nearest 0.1g. Step 4 Weighed dry and clean graduated cylinder, weighed to the nearest 0.1g. Add about 100g resin, it does not vibrate, and the resin cylinder weighing quality, fine Indeed to 0.1g. The mass m1 with a resin by difference calculation. Oscillating cylinder placed in a cradle and start the machine, drop (1250 ± 50) after the second stop, if necessary, in the case of non-compacted powder By using a metal piston by rotation of the free surface of the resin becomes horizontal. Reads the volume occupied by the powder, the nearest 2mL. Fall (1250 ± 50) once again and re-measured volume. If the difference between the two readings of less than or equal to 2mL, take a smaller value, Vp mL, and the test was stopped. If the difference is greater than 2mL, continue to fall vibration period (1250 ± 50) times, until the volume measured after two consecutive cycles of oscillation The difference is not more than 2mL. Take a smaller value, Vp mL, and the test was stopped.

5 The results are shown

Calculate tap apparent density in g/cc, said. Where. M1 --- quality of vinyl chloride homopolymer and copolymer resins of sample in grams (g); Vp --- tap vinyl chloride homopolymer and copolymer resins in volume, in milliliters (mL).

6 Test report

The test report should include at least the following. GB/T 23652-2009/ISO 1068. 1975 ...