GB/T 32681-2016 English PDF

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GB/T 32681-2016: Plastics -- Phenolic resins -- Determination of heats and temperatures of reaction by differential scanning calorimetry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32681-2016	179	Add to Cart	3 days	Plastics -- Phenolic resins -- Determination of heats and temperatures of reaction by differential scanning calorimetry	Valid

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Basic data

Standard ID: GB/T 32681-2016 (GB/T32681-2016)
Description (Translated English): Plastics -- Phenolic resins -- Determination of heats and temperatures of reaction by differential scanning calorimetry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.10
Word Count Estimation: 9,928
Date of Issue: 2016-06-14
Date of Implementation: 2017-01-01
Quoted Standard: GB/T 2035-2008; ISO 5725-1986
Adopted Standard: ISO 11409-1993, MOD
Regulation (derived from): National Standard Announcement No. 8 of 2016
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method of measuring the reaction heat and reaction temperature of phenolic resin by differential scanning calorimetry. The process is applicable to phenolic resins having exothermic behavior, such as resole phenolic resins, or mixtures of novolak resins and hexamethylenetetramine or other curing agents. This method is used to characterize a product or study.

GB/T 32681-2016: Plastics -- Phenolic resins -- Determination of heats and temperatures of reaction by differential scanning calorimetry

---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.
Plastics.Phenolic resins.Determination of heats and temperatures of reaction by differential scanning calorimetry ICS 83.080.10 G31 National Standards of People's Republic of China Plastic phenolic resin by differential scanning calorimetry Determination of reaction heat and reaction temperature Plastics-Phenolicresins-Determination ofheatsandtemperaturesof (ISO 11409..1993, MOD) 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the re-drafting method to modify ISO 11409..1993 "plastic phenolic resin with differential scanning calorimetry Heat and reaction temperature "(English version). The technical differences between this standard and ISO 11409..1993 are as follows. --- on the normative reference documents, in order to meet the technical conditions of our country, this standard has been adjusted, the adjustment of the situation reflected in the Chapter 2, "Normative references", as follows. Replace ISO 472. 1988 with GB/T 2035-2008 equivalent to ISO 472..1999. This standard has made the following editorial changes. --- Deleted the preface of ISO 9771..1995; - an introduction to the national standard; --- to 3.4 "Note 1" to "note"; --- "crucible" instead of "sample container"; - change the title "average" of 4.5.3.3 to "result representation"; --- Change the precision of ISO 11409..1993 to note; - Information is included in Appendix A. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard by the National Plastics Standardization Technical Committee Thermosetting Plastics Subcommittee (SAC/TC15/SC11) centralized. This standard is responsible for drafting units. Changshu Southeast Plastic Co., Ltd. This standard participates in the drafting unit. Zhongguang dawn Chemical Research and Design Institute Co., Ltd., Shaxian Hongsheng Plastic Co., Ltd., Shanghai Eurasia Materials Co., Ltd., Shandong Shengquan Chemical Co., Ltd., National Synthetic Resin Quality Supervision and Inspection Center. The main drafters of this standard. Wei Wei, Zhu Yigang, Wang Yonggui, Luo Jianfeng, Zhu Yongmao, Zhang Zhimin, Li Wenjiang. Plastic phenolic resin by differential scanning calorimetry Determination of reaction heat and reaction temperature

1 Scope

1.1 This standard specifies the method of determining the reaction heat and reaction temperature of phenolic resin by differential scanning calorimetry. 1.2 The process is applicable to phenolic resins having exothermic behavior, such as resole phenolic resins, or novolak resins and hexamethylenetetramine or Other curing agents. 1.3 This method is used to characterize a product or study.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 2035-2008 Plastics terminology and definitions (ISO 472..1999, IDT) ISO 5725. 1986 Precision of test methods Intermittent laboratory tests for reproducibility and reproducibility (Precisionoftest methods-Determination ofrepeatabilityandreproducibilityforastandardtestmethodbyinter-labo- ratorytests

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Differential scanning calorimeter differentialscanningcalorimetry; The polymer sample was placed under the same temperature control procedure as a reference and the polymer sample was measured with the reference substance to absorb or release heat A technique of temperature and/or time function. 3.2 Phenolic resin phenolicresin A class of resins derived from the condensation of phenol and its homologues and/or their derivatives with aldehydes or ketones. 3.3 Novolac novolac Non-self-curable, soluble and fusible, stable storage of phenolic resin, the benzene ring between the main rely on methylene bridge connection. There is cure In the presence of the resin, the resin may be crosslinked by further reaction by heating. See GB/T 2035-2008 for the contents of the novolac resin. 3.4 Resole phenolic resole Soluble fusible phenolic resin, and novolac resin is different from it contains hydroxymethyl and methylene ether groups, and sometimes also contain methylene Amine bridge. Such resins are self-curable and can be cured by heat and/or under the action of accelerators to be insoluble and insoluble without the need for Add other reaction components. Note. The terms "heat" and "heat of reaction" used in this standard correspond to "enthalpy" and "reaction enthalpy".

4 test method

4.1 Principles Measure the heat flux (energy) of the supplied sample as a function of time or temperature under the specified atmosphere and temperature control procedures. ......

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