HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 2412-2008 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 2412-2008: Plastics -- Polypropylene (PP) and propylene copolymer thermoplastics -- Determination of isotactic index
Status: Valid

GB/T 2412: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 2412-2008English209 Add to Cart 3 days [Need to translate] Plastics -- Polypropylene (PP) and propylene copolymer thermoplastics -- Determination of isotactic index Valid GB/T 2412-2008
GB/T 2412-1980English239 Add to Cart 2 days [Need to translate] Polypropylene--Method of determination of normal indices Obsolete GB/T 2412-1980

PDF similar to GB/T 2412-2008


Standard similar to GB/T 2412-2008

GB/T 2408   GB/T 2406.2   GB/T 2411   GB/T 2406.3   

Basic data

Standard ID GB/T 2412-2008 (GB/T2412-2008)
Description (Translated English) Plastics -- Polypropylene (PP) and propylene copolymer thermoplastics -- Determination of isotactic index
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G31
Classification of International Standard 83.080.20
Word Count Estimation 9,938
Date of Issue 2008-06-19
Date of Implementation 2009-02-01
Older Standard (superseded by this standard) GB/T 2412-1980
Quoted Standard GB/T 2546.1-2006
Adopted Standard ISO 9113-1986, MOD
Regulation (derived from) National Standard Approval Announcement 2008 No.10 (Total No.123)
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 percentage of n-heptane polypropylene quality of the determination of the quality of the sample is not soluble in boiling under standard test conditions. This standard applies to GB/T 2546. 1-2006 described propylene homopolymer (PP-H), propylene impact copolymer (PP-B), propylene random copolymer (PP-R). This standard is applicable to conventional powder, granules or crushed granular polypropylene material. This standard does not apply to a colorant, fillers modified polypropylene material.

GB/T 2412-2008: Plastics -- Polypropylene (PP) and propylene copolymer thermoplastics -- Determination of isotactic index


---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. Polypropylene (PP) and propylene copolymer thermoplastics. Determination of isotactic index ICS 83.080.20 G31 National Standards of People's Republic of China Replacing GB/T 2412-1980 Plastic polypropylene (PP) and propylene copolymer thermoplastic Plastics - Determination of isotactic index (ISO 9113. 1986, MOD) Posted 2008-06-19 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 9113. 1986 "--- plastic polypropylene (PP) and propylene copolymer thermoplastics --- isotactic index measurement Fixed "(in English). This standard is based on ISO 9113. 1986 re-drafted. The standard lists the reg number and ISO 9113 in Appendix A. 1986 reg Control list numbered. In Appendix B gives a list of these technical differences for reference. This standard replaces GB/T 2412-1980 "polypropylene isotactic index test method." This standard compared with GB/T 2412-1980 The main changes are as follows. a) scope of application has been modified; b) increase the "Normative references" chapter; c) increase the "principle" chapter; d) test procedure, when the sample preparation, the "approximately 2 times the amount of dry ice placed in enamel pan and mix" to "an appropriate amount of dry ice or liquid nitrogen mixed Together "and increase" for films, fibers or films, such as the sample at least one dimension less than 0.6mm, you do not have to grind and sift. thin The film should be cut into small pieces, small pieces of ribbon or by melt becomes friable form "; e) test procedure, drying and annealing the sample, it will be "more than nitrogen pressure was kept at 180 mm Hg at 140 ℃ ± 2 ℃ dried 2h; for powder, vacuum and pressure 50 mm Hg, ± 2 ℃ dried 2h at 70 ℃ "to" make the nitrogen pressure was kept at more than 25kPa or less than the nitrogen pressure in at 2 ℃ ± 140 ℃ drying 2h, powder samples available at 70 ℃ ± 2 ℃ under dry "; f) the test procedure, after the end of the extraction, "residual polymer containing nitrogen funnel placed in a vacuum oven at 100 ℃ ~ 105 ℃, more than 50 mm Hg pressure drying 2h "to" residual polymer containing nitrogen funnel placed in a vacuum oven at 100 ℃ ~ 105 ℃, nitrogen residual pressure maintained in a dry 2h 25kPa or less condition "; g) the results of the calculation, the changes are made to the formula symbol. Appendix A of this standard and Appendix B is an informative annex. The standard proposed by China Petroleum and Chemical Corporation. This standard by the National Standardization Technical Committee plastic plastic resins and petrochemical products Club (SAC/TC15/SC1) centralized. This standard was drafted. China Sinopec Yangzi Petrochemical Co., Ltd., China Petroleum Daqing Petrochemical Research Institute of Chemical Research Center. This standard was drafted. Beijing Yanshan Branch Institute of Applied resin China Petrochemical, China Petrochemical Jiujiang Company, China Sinopec Zhenhai Refinery subsidiary, China Sinopec Zhongyuan Petroleum Chemical Co., Ltd., China PetroChina Lanzhou Petrochemical Company. The main drafters of this standard. Wu Shibin, Wangqi Kun, Xu Dejun, Lijing Qing. This standard was first published in 1980, this is the first revision. Plastic polypropylene (PP) and propylene copolymer thermoplastic Plastics - Determination of isotactic index

1 Scope

1.1 standard specifies the determination under standard test conditions boiling n-heptane-insoluble polypropylene quality of the percentage of the sample mass method. 1.2 This standard applies to the GB/T 2546.1-2006 described propylene homopolymer (PP-H), a propylene impact copolymer (PP-B), propionic Butene random copolymer (PP-R). 1.3 This standard applies to conventional powdery, granular or crushed granular polypropylene material. 1.4 This standard does not apply to colorants, fillers such as modified polypropylene material.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequently Some amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 2546.1-2006 Plastics - Polypropylene (PP) molding and extrusion materials - Part 1. Designation system and basis (ISO 1873-1.1995, MOD) Principle 3 The amount of sample is placed in a Soxhlet extractor, refluxed with boiling n-heptane extraction, the quality of the sample before and after extraction, the insoluble in the calculation The mass fraction of n-heptane, is the isotactic index.

4 Reagents and materials

4.1 n-heptane. AR, no aromatic components. 4.2 acetone. AR. 4.3 dry ice or liquid nitrogen.

5 Instruments

5.1 Disposal. can crushed into pellets or 0.3mm ~ 0.6mm diameter equally effective device. 5.2 sieve. aperture of 0.3mm and 0.6mm each. 5.3 extraction means shown in Figure 1. 5.3.1 Soxhlet extractor (with round bottom flask), shown in Figure 2. 5.3.2 condenser, shown in Figure 3. 5.3.3 glass sand funnel. filled with distilled water at room temperature, it flows through the time of 45s ~ 90s, shown in Figure 4. 5.3.4 perforated glass funnel, shown in Figure 5. Electric sets with 5.4 regulator device. Volume 250mL. 5.5 vacuum oven. the temperature can be maintained separately at 70 ℃ ± 2 ℃ and 140 ℃ ± 2 ℃, and pressure is maintained at 25kPa or less. 5.6 Analytical balance. accuracy 0.1mg.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 2412-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 2412-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 2412-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 2412-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 2412-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2412-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.