Valid

GB/T 3682-2000Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (English PDF)

Preview PDF

This is a limited preview

Buy now to download the full PDF (19 pages)

Need quotation for your management?

Get a formal quotation for GB/T 3682-2000 in 30 minutes.

Issued by

State Bureau of Quality Technical Supervision Foreword .......................................................

Level / Type

National · Recommended

Issue date

October 27, 2000

Implementation date

May 1, 2001

Scope

GB/T 3682-2000 (Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics) is available as an English-translated PDF.

GB/T 3682-2000 is the Chinese standard "Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics".

Its scope clause reads: 1.1 This Standard specifies a method for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load.

Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this Standard. The test conditions normally used for thermoplastics are listed in annexes A and B. The melt volume-flow rate will normally be found useful when comparing filled and unfilled thermoplastics.

The melt flow rate can now be determined by automatic measurement provided the melt density at the test temperature is known. This method is not applicable to thermoplastics for which the rheological behaviour is affected by phenomena such as hydrolysis, condensation or crosslinking.

1.2 The melt mass-flow rate and melt volume-flow rate of thermoplastics are dependent on the rate of shear. The rates of shear in this test are much smaller than those used under normal conditions of fabrication, and therefore data obtained by this method for various thermoplastics may not always correlate with their behaviour in actual use. Both methods are useful in quality control. Its clauses include apparatus.

Found what you need?

Document preview — GB/T 3682-2000

National Standard of the People's Republic of China

ICS: 83.080.20
Classification: G 31

Issued by: State Bureau of Quality Technical Supervision Foreword .......................................................

Foreword3
ISO Foreword5
1 Scope6
2 Normative references6
3 Apparatus6
4 Test sample10
6 Procedure A11
7 Procedure B13
8 Flow rate ratio (FRR)15
9 Precision16
10 Test report for thermoplastic materials19

1 Scope

1.1 This Standard specifies a method for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this Standard. The test conditions normally used for thermoplastics are listed in annexes A and B. The melt volume-flow rate will normally be found useful when comparing filled and unfilled thermoplastics. The melt flow rate can now be determined by automatic measurement provided the melt density at the test temperature is known.

This method is not applicable to thermoplastics for which the rheological behaviour is affected by phenomena such as hydrolysis, condensation or crosslinking.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

GB/T 1031-1995 Surface roughness parameters and their values (neq ISO 468:1982)

3 Apparatus

3.1 Basic apparatus

3.1.1 The apparatus is basically an extrusion plastometer operating at a fixed temperature. The general design is as shown in figure 1. The thermoplastic material, which is contained in a vertical cylinder, is extruded through a die by a loaded piston. The

Annex B (Informative)

Conditions in use for the designation of standards for thermoplastic materials

Table B.1 indicates test conditions that are currently specified in relevant standards. Other test conditions not listed here may be used, if necessary, for a particular material.

Table B.1

Materials

Conditions (code letter)

Test temperature, theta, °C

Nominal load (combined), mnom , kg

PS H 200 5.00

190

2.16

0.325

21.60

5.00

PP M 230 2.16

ABS U 220 10.00

PS-1 H 200 5.00

E/VAC

150

190

125

2.16

0.325

SAN U 220 10.00

ASA, ACS, AES U 220 10.00

PC W 300 1.20

PMMA N 230 3.80

190

2.16

10.00

POM D 190 2.16

MABS U 220 10.00

__________ END __________

Chinese Standards

This is an excerpt of the PDF (Some pages are marked off intentionally)

Full-copy PDF can be purchased from 1 of 2 websites:

nu SEARCH the standard ID, such as GB 4943.1-2022.

nu Select your country (currency), for example: USA (USD); Germany (Euro).

nu Full-copy of PDF (text-editable, true-PDF) can be downloaded in 9 seconds.

nu Tax invoice can be downloaded in 9 seconds.

nu Receiving emails in 9 seconds (with download links).

nu SEARCH the standard ID, such as GB 4943.1-2022.

nu Full-copy of PDF (text-editable, true-PDF) can be downloaded in 9 seconds.

nu Receiving emails in 9 seconds (with PDFs attached, invoice and download links).

Translated by: Field Test Asia Pte. Ltd. (Incorporated & taxed in Singapore. Tax ID: 201302277C)

Linkin: https://www.linkedin.com/in/waynezhengwenrui/

------ The End ------

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1031-1995Geometrical product specifications(GPS) - Surface texture: Profile method - Surface roughness parameters and their values

Cited by

How to Download GB/T 3682-2000

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.