GB/T 3780.5-2017 in English

VALID

Carbon black-Part 5:Determination of specific surface area-CTAB test method

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $140.00
$136.00

Standard No:	GB/T 3780.5-2017
Document status:	VALID
Title in English:	Carbon black-Part 5:Determination of specific surface area-CTAB test method
Title in Chinese:	炭黑第5部分：比表面积的测定 CTAB法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-11-01
Implemented on:	2018-05-01
Superseding:	GB/T 3780.5-2008 Carbon black - Part 5：Determination of specific surface area-CTAB test method
ICS Classification:	83.040.20-Rubber compounding ingredients
Professional Classification:	GB-National Standard
Related Keywords:	specific surface area specific surface specific surface area range area-ctab test method introduction interpretation new reference carbon
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《GB/T 3780.5-2017炭黑第5部分：比表面积的测定 CTAB法》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC5（全国橡胶与橡胶制品标准化技术委员会炭黑分会）执行，主管部门为中国石油和化学工业联合会。

Introduction

Interpretation of the National Standard of the People's Republic of China GB/T 3780.5—2017

This standard specifies the method for determining the specific surface area of carbon black for rubber using cetyltrimethylammonium bromide (CTAB), which is applicable to all types of rubber products industries.

Carbon black type	CTAB specific surface area range (m²/kg)	Sample weight (g)
N100 series	125~150	0.30
N200 series	100~130	0.35
N300 series	75~105	0.40
N351~N440	50~75	0.60
N500~N600	35～50	0.90
N700 series	25~30	1.35

Standard Revision Background and Technology Evolution Analysis

Since its first publication in 1983, this standard has undergone many revisions, reflecting the progress of carbon black manufacturing technology and testing methods. This revision mainly updates:

Introduction of a new reference carbon black (IRC4#) to replace the old SRB5 series
Added standard requirements for laboratory glassware
Optimized the preparation process of CTAB solution

Key reagents and instrument descriptions

Hexadecyltrimethylammonium bromide (CTAB) is the core reagent of this standard, used to measure the specific surface area of carbon black. The solution with a concentration of 0.01 mol/L must be prepared strictly in accordance with the standard, and attention must be paid to the effect of temperature on crystallization.

Implementation recommendations

The laboratory should be equipped with an accurate analytical balance and ultrasonic disperser to ensure data accuracy.
Regularly calibrate CTAB and OT solutions to ensure the reliability of the test system.
Operators must receive professional training and be familiar with the revised content and technical details of the standard.

More samples: JGJ 94-2008 JC/T 2453-2018 JJG 21-2008

Sample only — not a preview of GB/T 3780.5-2017

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