GB/T 37642-2019 English PDF

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GB/T 37642-2019: Polycaprolactone
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37642-2019	199	Add to Cart	3 days	Polycaprolactone	Valid

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Basic data

Standard ID: GB/T 37642-2019 (GB/T37642-2019)
Description (Translated English): Polycaprolactone
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y28
Classification of International Standard: 83.080.01
Word Count Estimation: 10,186
Date of Issue: 2019-06-04
Date of Implementation: 2020-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37642-2019: Polycaprolactone

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Polycaprolactone ICS 83.080.01 Y28 National Standards of People's Republic of China Polycaprolactone (PCL) Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Biomaterials and Degradation Products Standardization Technical Committee (SAC/TC380). This standard was drafted. Shenzhen Guanghua Weiye Co., Ltd., Xiaogan Yisheng New Material Co., Ltd., Zhongke 3D molding technology (deep Shenzhen) Co., Ltd., Beijing Technology and Business University, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Shandong Jilu Caprolactone Special Materials Co., Ltd., IV Sichuan University and so on. The main drafters of this standard. Yang Yizhen, Xiao Xianglian, Huang Zhigang, Yan Xiaoqian, Xu Hongping, Chen Rui, Chen Cheng, Zhang Xiangnan, Huang Biwei, Chen Xuesi, Wang Yuzhong, Pang Wei. Polycaprolactone (PCL)

1 Scope

This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of polycaprolactone resins. This standard applies to polycaprolactone resin synthesized with ε-caprolactone as the main raw material.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Plastics -- Determination of density of non-foam plastics -- Part 1 . Dipping method, liquid pycnometer method and titration method GB/T 2547 plastic sampling method GB/T 3682.1-2018 Plastic thermoplastic melt mass flow rate (MFR) and melt volume flow rate (MVR) Determination of Part 1. Standard methods GB/T 19276.1 Determination of the final aerobic biodegradability of materials in aqueous culture fluids. Determination of oxygen demand in closed respirometers Methods GB/T 19276.2 Determination of the final aerobic biodegradability of materials in aqueous culture fluids using the measured release of carbon dioxide method GB/T 19277.1 Determination of the final aerobic biodegradability of materials under controlled composting conditions Method Part 1. General Method Plastics - Differential scanning calorimetry (DSC) - Part 3. Determination of melting and crystallization temperature and enthalpy

3 Technical requirements

3.1 Appearance The product is white, natural particles, no impurities, and the particle size is uniform. 3.2 Physical and chemical indicators Physical and chemical indicators should meet the requirements of Table 1. Table 1 Physical and chemical indicators Serial number project unit requirements 1 Characteristic viscosity dL/g M1±0.050 2 moisture% ≤0.30 3 density (25 ° C) g/cm3 1.11 ± 0.05 4 melt mass flow rate (MFR) g/10min M2 ± 1.5 5 melting point (Tpm) °C 60±3 6 molecular weight distribution ≤ 2.3 7 Biodegradation rate % ≥60 Note. M1 and M2 are the nominal values of the product. ......

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