GB/T 27797.8-2011 English PDF

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GB/T 27797.8-2011: Fibre-reinforced plastics -- Methods of producing test plates -- Part 8: Compression moulding of SMC and BMC
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27797.8-2011	194	Add to Cart	3 days	Fibre-reinforced plastics -- Methods of producing test plates -- Part 8: Compression moulding of SMC and BMC	Valid

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Basic data

Standard ID: GB/T 27797.8-2011 (GB/T27797.8-2011)
Description (Translated English): Fibre-reinforced plastics -- Methods of producing test plates -- Part 8: Compression moulding of SMC and BMC
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q23
Classification of International Standard: 83.120
Word Count Estimation: 10,117
Date of Issue: 2011-12-30
Date of Implementation: 2012-08-01
Quoted Standard: ISO 472; ISO 8604; ISO 12115-1997; EN 1842
Adopted Standard: ISO 1268-8-2004, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
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 two kinds of fiber-reinforced thermoset molding compounds, namely sheet molding compound (SMC) and bulk molding compound (BMC), molded test plates prepared by the general principles and steps. GB/T 27797 The purpose of this section is to ensure the production of flat test plate to cut test specimens (related to face trial methods see Appendix A). Prepared from the test board cut the sample, the test results are representative.

GB/T 27797.8-2011: Fibre-reinforced plastics -- Methods of producing test plates -- Part 8: Compression moulding of SMC and BMC

---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.
Fibre-reinforced plastics.Methods of producing test plates.Part 8. Compression moulding of SMC and BMC ICS 83.120 Q23 National Standards of People's Republic of China Reinforced plastics test plates Preparation Part 8. SMC and BMC molding Part 8. CompressionmouldingofSMCandBMC (ISO 1268-8.2004, IDT) Issued on. 2011-12-30 2012-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 27797 "fiber reinforced plastics test plates Preparation" is divided into 11 parts. --- Part 1. General; --- Part 2. the contact and injection molding; --- Part 3. wet molding; --- Part 4. prepreg molding; --- Part 5. Filament winding; --- Part 6. Pultrusion molding; --- Part 7. resin transfer molding; Part --- Article 8. SMC and BMC molding; Part --- Article 9. GMT/STC molding; --- Part 10. BMC and other long-fiber molding plastic injection molding and general principles common specimen molding; --- Part 11. BMC and other long-fiber molding plastic injection molding small square pieces. This section GB/T Part of 827,797. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method identical with ISO 1268-8.2004 (E) "fiber reinforced plastics test plates preparation methods - Part 8. SMC and BMC molding. " Consistency correspondence between this part of international documents and normative references of our files are as follows. --- GB/T 2035-2008 Plastics terms and definitions (ISO 472.1999, IDT). This part made the following editorial changes. --- Some of the statements apply to international standards to apply to our standard formulation; --- In Chapter 5, Article number 8.1.1,8.2 added. This part is proposed by the China Building Materials Federation. The fiber-reinforced plastic part by the National Standardization Technical Committee (SAC/TC39) centralized. This section is drafted. Beijing glass Composite Material Co., Ltd., Changzhou Tianma Group Co., Ltd., China North Industries Group fifty-three graduate School. The main drafters of this section. Zhen Ning company, Xuan Weidong, Zhang Yongxia, Mayu Jing, Zhang Liping. Reinforced plastics test plates Preparation Part 8. SMC and BMC molding

1 Scope

This section GB/T 27797 specifies the reinforced thermosetting molding compounds with two fibers that sheet molding compound (SMC) and bulk molding compound (BMC), the preparation of molded test plates of general principles and procedures. GB/T 27797 purpose of this section is to ensure the production of flat plate test cut test specimen (see relevant test method Appendix A). From the test plate prepared by the method of cut the sample, the test results are representative.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. ISO 472 Plastics term (Plastics-Vocabulary) ISO 8604 Plastics prepregs Definition and naming symbols (Plastics-Prepregs-Definitionsoftermsand symbolsfordesignations) ISO 12115.1997 fiber-reinforced plastic materials and molded thermoset prepreg flowability, maturation and shelf life of determination (Fibre-reinforcedplastics-Thermosetting mouldingcompoundsandprepregs-Determinationof flowability, maturationandshelflife) EN1842 plastic thermosetting molding (SMC-BMC) molding plastic shrink Determination [Plastics-Thermoset mouldingcompounds (SMC-BMS) -Determinationofcompressionmouldingshrinkage]

3 Terms and Definitions

Terms and definitions ISO 472 and ISO 8604 as defined in the following terms and definitions apply to this document. 3.1 Dwell time compressiontime Mold maintained at a predetermined pressure of time.

4 Health and Safety

This section is limited to the preparation method described in the test plate. Conditions of Use material shall comply with national regulations, employees must clear the danger, And to take appropriate protective measures.

5 Test board size

Recommended 5.1 die plate size of 200mm × 590mm (ISO 12115.1997 method Ⅱ desired size). If no suitable Mold, you can use a minimum area of 300cm2 die, only in accordance with the method A was prepared mold size should ensure that the test panels can be cut out At least five samples of 20mm × 250mm. ......

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