GB/T 6691-2007Resin finishing agent - Determination of refractive index (English PDF)
树脂整理剂 折射率的测定
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for GB/T 6691-2007 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 28, 2007
Implementation date
June 1, 2008
Scope
GB/T 6691-2007 is the English-translated version of 树脂整理剂 折射率的测定.
GB/T 6691-2007 is the Chinese standard "Resin finishing agent - Determination of refractive index". Its scope clause reads: This standard specifies the method for measuring the refractive index of the resin finishing agent.
This standard applies to the determination of the refractive index in the resin finishing agent. Principle 2 Shows, the refractive index can be used like formula (1).
(1) Isotropic pure substance, in a certain wavelength of light, temperature, pressure, and its refractive index is an inherent constant of the substance. A refractive index Like sodium D line spectrum, measured at a temperature of 20 °C when the air value, represented by state 20D.
(2) Resin finishing agent is an aqueous solution of the resin at the beginning abbreviated form, having a refractive index higher than that of water, to increase the value of its non-volatile components contained in the share Proportional to the mass, the refractive index of the standard curve from each resin finishing agent, the sample can be determined that the mass fraction of non-volatile components.
3 instruments and equipment a) Abbe refractometer; b) water bath. accurate to 0.1 °C. Test Method 4 Refractometer advance correction water before use, 20 °C when the refractive index of water is 1.3330.
Refractometer placed in a well-lit location, connected to the water bath, the refractometer prism temperature was adjusted to 20 °C, separated ribs on both sides Mirror, a few drops of the sample injection, immediately closed prism.
In this case the sample and prism maintained for several minutes at 20 °C. Knob to adjust the field of view prism divided Light and shade in two parts, compensation knob rotation, and eliminate iridescent clear dividing line between light and dark, light and dark boundary line continues adjusting knob to align the cross Crossing point.
After recording the ruler scale readings, the readings should be read in the fourth decimal place (the last for the estimates). Turns from side And then the other side will be aligned on the boundary cross point to observe and record the readings repeated three times, the difference between the readings shall not exceed 0.0003.
Take three readings of the arithmetic mean of the refractive index of the sample. Its clauses include test report.
Found what you need?
Document preview — GB/T 6691-2007
National Standard of the People's Republic of China
- ICS
- 71.100.01
- Classification
- G 55
- Replacing
- GB/T 6691-1986
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 3 instruments and equipment
1 Scope
This standard specifies the method for measuring the refractive index of the resin finishing agent.
This standard applies to the determination of the refractive index in the resin finishing agent.
Principle 2
Shows, the refractive index can be used like formula (1).
(1)
Isotropic pure substance, in a certain wavelength of light, temperature, pressure, and its refractive index is an inherent constant of the substance. A refractive index
Like sodium D line spectrum, measured at a temperature of 20 °C when the air value, represented by state 20D.
(2)
Resin finishing agent is an aqueous solution of the resin at the beginning abbreviated form, having a refractive index higher than that of water, to increase the value of its non-volatile components contained in the share
Proportional to the mass, the refractive index of the standard curve from each resin finishing agent, the sample can be determined that the mass fraction of non-volatile components.
3 instruments and equipment a) Abbe refractometer;
b) water bath. accurate to 0.1 °C.
Test Method 4
Refractometer advance correction water before use, 20 °C when the refractive index of water is 1.3330.
Refractometer placed in a well-lit location, connected to the water bath, the refractometer prism temperature was adjusted to 20 °C, separated ribs on both sides
Mirror, a few drops of the sample injection, immediately closed prism. In this case the sample and prism maintained for several minutes at 20 °C. Knob to adjust the field of view prism divided
Light and shade in two parts, compensation knob rotation, and eliminate iridescent clear dividing line between light and dark, light and dark boundary line continues adjusting knob to align the cross
Crossing point. After recording the ruler scale readings, the readings should be read in the fourth decimal place (the last for the estimates). Turns from side
And then the other side will be aligned on the boundary cross point to observe and record the readings repeated three times, the difference between the readings shall not exceed 0.0003.
Take three readings of the arithmetic mean of the refractive index of the sample.
5 Test Report
The test report includes the following.
a) the name of the measured resin finishing agent;
b) number of this standard;
c) Test conditions;
Name d) the use of the instrument, model;
e) test results;
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 6691
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 6691-2007 | Resin finishing agent - Determination of refractive index | current edition | Current |
| GB/T 6691-1986 | Resin finishing agent - Determination of refractive index | previous edition | Superseded |
This page sells the current edition, GB/T 6691-2007. Earlier editions are listed for reference only.
How to Download GB/T 6691-2007
- 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.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 6691-2007
$85.00