Valid

QB/T 4671-2014Test method for synthetic leather/artificial leather. Resistance to hydrolysis (English PDF)

人造革合成革试验方法耐水解的测定

Preview PDF

This is a limited preview

Buy now to download the full PDF (7 pages)

Need quotation for your management?

Get a formal quotation for QB/T 4671-2014 in 30 minutes.

Issued by

Ministry of Industry and Information Technology of PRC

Level / Type

National · Recommended

Issue date

July 9, 2014

Implementation date

November 1, 2014

Scope

QB/T 4671-2014 is the English-translated version of 人造革合成革试验方法耐水解的测定.

QB/T 4671-2014 — This Standard specifies the constant temperature and humidity hydrolysis resistance method (Method-A), the normal temperature lye acceleration method (Method-B) and the high temperature lye acceleration method (Method-C), which are the test methods for determining the hydrolysis resistance of artificial leather and synthetic leather.

This Standard is applicable to the hydrolysis resistance test of polyurethane artificial leather and polyurethane synthetic leather.

Found what you need?

Document preview — QB/T 4671-2014

National Standard of the People's Republic of China

ICS: 59.080.40

Issued by: Ministry of Industry and Information Technology of PRC

Foreword...3
1 Scope...4
2 Normative References...4
3 Test Principle...4
4 Test Equipment and Materials...5
5 Preparation of Specimen...5
6 Test Procedures...6
7 Test Report...7

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

This Standard was proposed by China Light Industry Council.

This Standard shall be under the jurisdiction of National Technical Committee for

Standardization of Plastic Products (SAC/TC 48).

Chief drafting organization of this Standard. Anan (China) Co., Ltd.

Participating drafting organizations of this Standard. Anta (China) Co., Ltd.; Jinjiang

Xiangda Industry & Trade Co., Ltd.; 361 Degrees (China) Co., Ltd.; Zhejiang Huafon

Synthetic Resin Co., Ltd.; Anhui Anli Artificial Leather Co., Ltd.; Zhejiang Hexin Ind Grp

Co., Ltd.; Zhejiang Sunlight Textile Technology Co., Ltd.; Suzhou Sunmun Technology

Co., Ltd.; and Hefei Ketian Chemical Industry Co., Ltd.

Chief drafting staffs of this Standard. Lin Tiansong, Chen Yuan, Fu Qingshui, Chen

Rongying, Zhang Yong, Jiang Sulian, Zhao Chune, Gu Yuting, Shi Yilei, and Jin Meijin.

Test Method for Synthetic Leather/Artificial Leather -

Resistance to Hydrolysis

1 Scope

This Standard specifies the constant temperature and humidity hydrolysis resistance

method (Method-A), the normal temperature lye acceleration method (Method-B) and

the high temperature lye acceleration method (Method-C), which are the test methods

for determining the hydrolysis resistance of artificial leather and synthetic leather.

This Standard is applicable to the hydrolysis resistance test of polyurethane artificial

leather and polyurethane synthetic leather.

2 Normative References

The following documents are essential to the application of this document. For the

dated documents, only the versions with the dates indicated are applicable to this

document; for the undated documents, only the latest version (including all the

amendments) is applicable to this document.

GB/T 629-1997 Chemical Reagent - Sodium Hydroxide

GB/T 2918-1998 Plastics - Standard Atmospheres for Conditioning and Testing

GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test

Methods

3 Test Principle

Under a certain temperature and humidity, or under a certain temperature and lye with

a certain concentration, after a specified time, evaluate the hydrolysis resistance of the

sample according to the changes in the sample surface state and changes in the

mechanical properties of the sample.

4 Test Equipment and Materials

4.1 Test equipment

4.2 Test Materials

4.2.1 Analytically-pure NaOH reagent

It shall comply with the provisions of GB/T 629-1997.

4.2.4 100°C high temperature resisting container without lid

Beaker, weighing paper, measuring cylinder, glass rod.

5 Preparation of Specimen

5.1 Specimen size. respectively cut 2 specimens along the warp/longitudinal and

weft/transverse directions about more than 100 mm from the edge of the sample. The

specimen size is (220±2) mm long × (150±2) mm wide; when cutting the defects such

as spots, damage marks, stains and the like shall be avoided.

6 Test Procedures

Artificial leather/synthetic leather hydrolysis resistance test methods are divided into

constant temperature and humidity hydrolysis resistance method (Method-A), normal

temperature lye acceleration method (Method-B), and high temperature lye

acceleration method (Method-C), of which the normal temperature lye acceleration

method (Method-B) is the arbitration method.

6.1 Constant temperature and humidity hydrolysis resistance method (Method-

6.2 Normal temperature lye acceleration method (Method-B)

6.2.1 Place the analytically-pure NaOH reagent in a beaker; add distilled water to

prepare a 10% NaOH solution; stir evenly by a glass rod; and let it stand. After it is

completely dissolved and cooled to 23°C, move it into a high-temperature resisting

container.

6.3 High temperature lye acceleration method (Method-C)

6.3.1 Place the analytically-pure NaOH reagent in a beaker; add distilled water to

prepare a 10% NaOH solution; stir evenly by a glass rod; let it stand. After it is

completely dissolved, transfer it to a high temperature resisting container containing

the NaOH solution.

6.3.2 Seal the high temperature resisting container containing 100mL of 10% NaOH

solution and place it in a constant temperature water bath and heat it to 70°C.

6.3.3 The ratio of the number of milliliters of NaOH solution to the number of grams of

sample mass shall be no less than 20.1.

6.4 Test Results and Evaluation

6.4.1 Observe whether there is obvious lubrication, color changes, cracks,

delamination and other phenomena on the surface of the specimen.

6.4.2 According to the provisions of 5.9 in GB/T 8949-2008, test the peeling load of the

specimen.

6.4.3 According to the provisions of QB/T 2714-2005, test the fold fastness of the

specimen.

7 Test Report

The test report shall include at least the following contents.

QB/T 4671-2014

LIGHT INDUSTRY STANDARD

ICS 59.080.40

Classification No.. Y47

Record No.. 46712-2014

Test Method for Synthetic Leather/Artificial Leather -

Resistance to Hydrolysis

Issued on. JULY 09, 2014

Implemented on. NOVEMBER 01, 2014

Issued by. Ministry of Industry and Information Technology of PRC

Table of Contents

Foreword... 3

1 Scope... 4

2 Normative References... 4

3 Test Principle... 4

4 Test Equipment and Materials... 5

5 Preparation of Specimen... 5

6 Test Procedures... 6

7 Test Report... 7

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

This Standard was proposed by China Light Industry Council.

This Standard shall be under the jurisdiction of National Technical Committee for

Standardization of Plastic Products (SAC/TC 48).

Chief drafting organization of this Standard. Anan (China) Co., Ltd.

Participating drafting organizations of this Standard. Anta (China) Co., Ltd.; Jinjiang

Xiangda Industry & Trade Co., Ltd.; 361 Degrees (China) Co., Ltd.; Zhejiang Huafon

Synthetic Resin Co., Ltd.; Anhui Anli Artificial Leather Co., Ltd.; Zhejiang Hexin Ind Grp

Co., Ltd.; Zhejiang Sunlight Textile Technology Co., Ltd.; Suzhou Sunmun Technology

Co., Ltd.; and Hefei Ketian Chemical Industry Co., Ltd.

Chief drafting staffs of this Standard. Lin Tiansong, Chen Yuan, Fu Qingshui, Chen

Rongying, Zhang Yong, Jiang Sulian, Zhao Chune, Gu Yuting, Shi Yilei, and Jin Meijin.

Test Method for Synthetic Leather/Artificial Leather -

Resistance to Hydrolysis

1 Scope

This Standard specifies the constant temperature and humidity hydrolysis resistance

method (Method-A), the normal temperature lye acceleration method (Method-B) and

the high temperature lye acceleration method (Method-C), which are the test methods

for determining the hydrolysis resistance of artificial leather and synthetic leather.

This Standard is applicable to the hydrolysis resistance test of polyurethane artificial

leather and polyurethane synthetic leather.

2 Normative References

The following documents are essential to the application of this document. For the

dated documents, only the versions with the dates indicated are applicable to this

document; for the undated documents, only the latest version (including all the

amendments) is applicable to this document.

GB/T 629-1997 Chemical Reagent - Sodium Hydroxide

GB/T 2918-1998 Plastics - Standard Atmospheres for Conditioning and Testing

GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test

Methods

3 Test Principle

Under a certain temperature and humidity, or under a certain temperature and lye with

a certain concentration, after a specified time, evaluate the hydrolysis resistance of the

sample according to the changes in the sample surface state and changes in the

mechanical properties of the sample.

4 Test Equipment and Materials

4.1 Test equipment

4.2 Test Materials

4.2.1 Analytically-pure NaOH reagent

It shall comply with the provisions of GB/T 629-1997.

4.2.4 100°C high temperature resisting container without lid

Beaker, weighing paper, measuring cylinder, glass rod.

5 Preparation of Specimen

5.1 Specimen size. respectively cut 2 specimens along the warp/longitudinal and

weft/transverse directions about more than 100 mm from the edge of the sample. The

specimen size is (220±2) mm long × (150±2) mm wide; when cutting the defects such

as spots, damage marks, stains and the like shall be avoided.

6 Test Procedures

Artificial leather/synthetic leather hydrolysis resistance test methods are divided into

constant temperature and humidity hydrolysis resistance method (Method-A), normal

temperature lye acceleration method (Method-B), and high temperature lye

acceleration method (Method-C), of which the normal temperature lye acceleration

method (Method-B) is the arbitration method.

6.1 Constant temperature and humidity hydrolysis resistance method (Method-

6.2 Normal temperature lye acceleration method (Method-B)

6.2.1 Place the analytically-pure NaOH reagent in a beaker; add distilled water to

prepare a 10% NaOH solution; stir evenly by a glass rod; and let it stand. After it is

completely dissolved and cooled to 23°C, move it into a high-temperature resisting

container.

6.3 High temperature lye acceleration method (Method-C)

6.3.1 Place the analytically-pure NaOH reagent in a beaker; add distilled water to

prepare a 10% NaOH solution; stir evenly by a glass rod; let it stand. After it is

completely dissolved, transfer it to a high temperature resisting container containing

the NaOH solution.

6.3.2 Seal the high temperature resisting container containing 100mL of 10% NaOH

solution and place it in a constant temperature water bath and heat it to 70°C.

6.3.3 The ratio of the number of milliliters of NaOH solution to the number of grams of

sample mass shall be no less than 20.1.

6.4 Test Results and Evaluation

6.4.1 Observe whether there is obvious lubrication, color changes, cracks,

delamination and other phenomena on the surface of the specimen.

6.4.2 According to the provisions of 5.9 in GB/T 8949-2008, test the peeling load of the

specimen.

6.4.3 According to the provisions of QB/T 2714-2005, test the fold fastness of the

specimen.

7 Test Report

The test report shall include at least the following contents.

......

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

How to Download QB/T 4671-2014

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.