|
US$204.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 20405.3-2024: Urine-absorbing aids for incontinence - Polyacrylate superabsorbent powders - Part 3: Test method for determination of the particle size distribution by sieve fractionation
Status: Valid GB/T 20405.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20405.3-2024 | English | 204 |
Add to Cart
|
3 days [Need to translate]
|
Urine-absorbing aids for incontinence - Polyacrylate superabsorbent powders - Part 3: Test method for determination of the particle size distribution by sieve fractionation
| Valid |
GB/T 20405.3-2024
|
| GB/T 20405.3-2006 | English | 239 |
Add to Cart
|
3 days [Need to translate]
|
Urine-absorbing aids for incontinence -- Test methods for characterizing Polymer-based absorbent materials -- Part 3: Determination of particle size distribution by sieve fractionation
| Obsolete |
GB/T 20405.3-2006
|
PDF similar to GB/T 20405.3-2024
Basic data | Standard ID | GB/T 20405.3-2024 (GB/T20405.3-2024) | | Description (Translated English) | Urine-absorbing aids for incontinence - Polyacrylate superabsorbent powders - Part 3: Test method for determination of the particle size distribution by sieve fractionation | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C45 | | Classification of International Standard | 11.180.20 | | Word Count Estimation | 10,185 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-01-01 | | Older Standard (superseded by this standard) | GB/T 20405.3-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 20405.3-2024: Urine-absorbing aids for incontinence - Polyacrylate superabsorbent powders - Part 3: Test method for determination of the particle size distribution by sieve fractionation
---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.
ICS 11.180.20
CCSC45
National Standard of the People's Republic of China
Replaces GB/T 20405.3-2006
Polyacrylate high absorbent for incontinence
Hygroscopic powders - Part 3.Determination by sieving method
Test methods for particle size distribution
(ISO 17190-3.2020,IDT)
Published on September 29, 2024, implemented on January 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is Part 3 of GB/T 20405 "Polyacrylate super absorbent powder for urine absorbent for incontinence".
GB/T 20405 has published the following parts.
--- Part 1.Method for determination of pH value;
--- Part 2.Test method for the determination of residual acrylate monomer content;
--- Part 3.Test method for particle size distribution by sieving;
--- Part 4.Determination of moisture content by loss on heating;
--- Part 5.Determination of water absorption in physiological saline by weighing method.
This document replaces GB/T 20405.3-2006 "Test method for properties of polymer matrix absorbent materials for urine absorbents for incontinence"
Part 3.Determination of particle size distribution by sieving method”, compared with GB/T 20405.3-2006, in addition to structural adjustments and editorial changes, the main
The main technical changes are as follows.
a) Added warnings throughout the text;
b) The scope has been changed (see Chapter 1, Chapter 1 of the.2006 edition);
c) The normative references have been changed (see Chapter 2, Chapter 2 of the.2006 edition);
d) Added the terms and definitions of sample and specimen (see Chapter 3);
e) Added reagent and material requirements (see Chapter 5);
f) Changed the requirements for analytical balance (see 6.1, 4.1 of the.2006 edition), changed the requirements for beaker (see 6.2, 4.2 of the.2006 edition), and changed
Changed the requirements for sieve shakers (see 6.3, 4.3 of the.2006 edition), changed the requirements for stainless steel sieves (see 6.4,
4.4), changed the brush requirements (see 6.4, 4.5 of the.2006 edition);
g) Added environmental conditions requirements (see Chapter 7);
h) Changed the sampling requirements (see Chapter 8, Chapter 5 of the.2006 edition);
i) Added the requirement of "discard any wet or damaged sieves" (see 9.1), and changed the weighing method (see 9.4, 9.5, 9.6,.2006
6.4 and 6.5 of the.2006 edition), the setting requirements for the sieve shaker have been changed (see 9.9, 6.8 of the.2006 edition);
j) Changed the reporting requirements (see Chapter 11, Chapter 9 of the.2006 edition);
k) The precision has been changed (see Chapter 12, Chapter 8 of the.2006 edition).
This document is equivalent to ISO 17190-3.2020 "Polyacrylate superabsorbent powder for incontinence - Part 3.
Test Method for Particle Size Distribution by Sieving.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is issued by the Ministry of Civil Affairs of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee for Standardization of Rehabilitation and Special Equipment for Persons with Disabilities (SAC/TC148).
This document was drafted by. China Center for Assistive Devices for Persons with Disabilities, Beijing University of Aeronautics and Astronautics, Shaanxi Medical Device Quality Inspection Institute, China
Institute of Rehabilitation Sciences, Beijing Kangtai Hongming Medical Equipment Co., Ltd., and Qingdao Shouke New Materials Co., Ltd.
The main drafters of this document are. Wang Qi, Yan Mei, Tao Chunjing, Xiu Chunyang, Wang Yanhui, Chen Xiaodong, Xu Wenfeng, Zhang Jian, Li Dongmei, Wang Zhen
Ze, Zeng Xiankui.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2006 as GB/T 20405.3-2006;
---This is the first revision.
Introduction
Polymer matrix absorbent material is a type of urine absorbent for incontinent persons, and particle size distribution is a characteristic of polymer matrix absorbent material.
GB/T 20405 series of test methods are applicable to the detection of polyacrylate highly absorbent powders in sanitary products, including those for incontinence.
Materials testing for urine absorption aids. These test methods are designed specifically for testing materials and are not intended for, or applicable to, finished urine absorption aids.
Equipment testing.
GB/T 20405 is planned to consist of 11 parts.
--- Part 1.pH determination method. The purpose is to provide a method for determining the pH value of powdered highly water-absorbent polyacrylates.
method.
--- Part 2.Test method for determination of residual acrylate monomer content. The purpose is to provide a method for determining the highly absorbent polyacrylic acid powder
Test method for residual sodium acrylate and total amount of acrylic acid (expressed as acrylic acid) in
--- Part 3.Test method for particle size distribution by sieving. The purpose is to provide a method for measuring particle size not greater than 850 μm
Test method for particle size distribution of cross-linked polyacrylate superabsorbent powders.
--- Part 4.Determination of moisture content by weight loss on heating. The purpose is to provide a cross-linked polyacrylate highly absorbent powder
Method for determining weight loss on heating when the moisture content is between 0% and 5%.
--- Part 5.Determination of water absorption by weighing method in physiological saline. The purpose is to provide a polyacrylate highly absorbent powder
Method for determination of swelling capacity in saline.
--- Part 6.Determination of the saline solution retention rate after centrifugation by weighing method. The purpose is to provide a method for determining the high water absorption of polyacrylate
A method to measure the ability of a polymer powder to retain saline solution after centrifugation.
--- Part 7.Determination of the amount of liquid absorbed under pressure by weighing method. The purpose is to provide high water absorption of polyacrylates under specific pressure.
Method for determination of absorption of saline solution by powders.
--- Part 8.Determination of flow rate by weighing method. The purpose is to provide a method for determining the mass flow rate of polyacrylate superabsorbent powder.
--- Part 9.Determination of density by weighing method. The purpose is to provide polyacrylates with high water absorption properties for incontinence urine absorption aids.
Method for determination of powder density.
--- Part 10.Determination of extractable polymer content by potentiometric titration. The purpose is to provide polyacrylate highly absorbent powder that can be used in salt
Method for determination of the mass fraction of carboxylic acid groups of different chain lengths extracted from water.
--- Part 11.Determination of inhalable particle content. The purpose is to provide the inhalable particle content of polyacrylate super absorbent powder.
Determination method.
Polyacrylate high absorbent for incontinence
Hygroscopic powders. Part 3.Determination by sieving method
Test methods for particle size distribution
Warning---This document does not claim to solve any safety issues related to its use. Users of this document are responsible for
Personnel performing the tests are expected to have adequate training in all aspects of the procedure.
Point training.
1 Scope
This document specifies a test method for measuring the particle size distribution of cross-linked polyacrylate superabsorbent powders with a particle size not exceeding 850 μm.
It is only applicable to measurements with sieve-vibration separation. Tapping equipment is not expected to produce the same results.
This document applies to polymeric superabsorbent materials in powder form that flow freely under specified test conditions.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
ISO 187 Standard atmospheric conditions for conditioning and testing of paper, board and pulp and procedures for monitoring atmospheric conditions and sample conditioning
Note. GB/T 10739-2023 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp samples (ISO 187.2022, MOD)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Sample
A product or part of a product extracted from a production batch for testing purposes that is identifiable and traceable to its origin.
3.2
Sample
The portion of the sample (3.1) identified for testing.
4 General
A certain amount of highly absorbent powder is separated into fractions of specific particle size by passing through a series of standard sieves. Each fraction is weighed and
Values are reported as a percentage of the total amount of material.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20405.3-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 20405.3-2024_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 20405.3-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 20405.3-2024_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+ countriesQuestion 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 20405.3-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20405.3-2024 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.
|