GB/T 15928-2008 English PDF

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GB/T 15928-2008: Reinforced plastics based on unsaturated polyester resins -- Determination of residual styrene monomer content
Status: Valid

GB/T 15928: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15928-2008	169	Add to Cart	3 days	Reinforced plastics based on unsaturated polyester resins -- Determination of residual styrene monomer content	Valid
GB/T 15928-1995	239	Add to Cart	2 days	Determination method of residual styrene monomer contents in reinforced plastics based on unsaturated polyester	Obsolete

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Basic data

Standard ID: GB/T 15928-2008 (GB/T15928-2008)
Description (Translated English): Reinforced plastics based on unsaturated polyester resins -- Determination of residual styrene monomer content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q23
Classification of International Standard: 83.120
Word Count Estimation: 7,766
Date of Issue: 2008-06-30
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 15928-1995
Quoted Standard: GB/T 1446-2005; GB/T 2577
Regulation (derived from): National Standard Approval Announcement 2008 No.11 (Total No.124)
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 has been determined by gas chromatography curing of unsaturated polyester resin reinforced plastic molded body and method of residual styrene monomer content. This standard applies to unsaturated polyester resin reinforced plastics, determination of residual styrene monomer content of unsaturated polyester resin castings.

GB/T 15928-2008: Reinforced plastics based on unsaturated polyester resins -- Determination of residual styrene monomer content

---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.
Reinforced plastics based on unsaturated polyester resins.Determination of residual styrene monomer content ICS 83.120 Q23 National Standards of People's Republic of China Replacing GB/T 15928-1995 Unsaturated polyester resin matrix reinforced plastics Determination of residual styrene monomer content Posted 2008-06-30 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 15928-1995 "unsaturated polyester resin reinforced plastic residual styrene monomer content determination." This standard and GB/T 15928-1995 compared to the main changes are as follows. --- Increased capillary gas chromatography (see Chapter 5); --- Remove the packed column preparation conditions (GB/T 15928-1995 of 4.6). The standard proposed by China Building Materials Federation. This standard by the national fiber-reinforced plastic Standardization Technical Committee. This standard by Shanghai FRP Research Institute is responsible for drafting. The main drafters of this standard. Zhong Lin Wang, Zhang Xiaoping. This standard was first released in December 1995, this is the first revision. Unsaturated polyester resin matrix reinforced plastics Determination of residual styrene monomer content

1 Scope

This standard specifies the gas chromatographic determination of the cured unsaturated polyester resin reinforced plastics and castings containing residual styrene monomer Method quantity. This standard applies to the unsaturated polyester resin reinforced plastics Determination of residual styrene monomer content of the unsaturated polyester resin casting body.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1446-2005 fiber reinforced plastics General performance test method Plastic resin content test method GB/T 2577 glass fiber reinforced Principle 3 With methylene chloride from the cured unsaturated polyester resin extracted styrene and styrene content was measured by gas chromatography.

4 Reagents

4.1 dichloromethane. AR. 4.2 methanol. AR. 4.3 n-butyl benzene. chromatography. 4.4 Styrene. AR, freshly distilled, stored at 0 ℃ and set aside. Styrene and mixed with an equal volume of methanol should produce transparent Solution. 4.5 nitrogen, hydrogen and air. purity of 99.999%, used GC carrier gas and fuel gas.

5 Instruments

5.1 Gas Chromatograph 5.1.1 Column Packed and capillary columns can be recommended wall coating open tubular capillary column. 5.1.2 Detector Use hydrogen flame ionization detector (FID), terephthalic sensitivity higher than 1 × 10-10g. 5.1.3 Injector You can use liquid sample injector. If using capillary column may be used with a split injector. 5.1.4 Data Processor Using a recorder or a microcomputer with a data processor recording process signals from the detector. 5.1.5 microinjector Capacity (1 ~ 5) μL. 5.2 Analytical Balance A sense of the amount of 0.0001g. ......

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