GB/T 17044-2020Steel cord conveyor belts. Adhesion strength test of the cover to the core layer (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1:1-2009:

This standard replaces GB/T 17044-2013 "Steel Cord Conveyor Belt Cover Layer and Belt Core Layer Bonding Strength Test", and GB/T 17044-

Compared with:2013, the main technical changes are as follows:

--- Added the normative reference document ISO 18573 (see Chapter 2, Chapter 2 of the:2013 edition);

---Modified the description of the minimum sample size and the direction of cutting the sample (see Chapter 5, Chapter 5 of the:2013 edition);

---Modified the test procedure (see Chapter 6, Chapter 6 of the:2013 edition):

The translation method used in this standard is equivalent to ISO 8094:2013 "Test for the Bonding Strength of Steel Cord Conveyor Belt Covering Layer and Belt Core Layer":

The Chinese documents that have a consistent correspondence with the international documents cited in this standard are as follows:

---GB/T 532-2008 Determination of the bonding strength between vulcanized rubber or thermoplastic rubber and fabric (ISO 36:2005, IDT);

---GB/T 12833-2006 Multimodal curve analysis in the determination of tear strength and adhesive strength of rubber and plastics (ISO 6133:

1998, IDT);

---GB/T 30691-2014 Conveyor belt test environment and state adjustment time (ISO 18573:2012, IDT):

This standard was proposed by the China Petroleum and Chemical Industry Federation:

This standard is under the jurisdiction of the National Belt Wheel and Belt Standardization Technical Committee Conveyor Belt Technical Committee (SAC/TC428/SC1):

Drafting organizations of this standard: Wuxi Baotong Technology Co:, Ltd:, Zhongde (Yangzhou) Transportation Engineering Technology Co:, Ltd:, Anhui Zhongyi Adhesive Tape

Co:, Ltd:, Zhongnan Rubber Group Co:, Ltd:, Shandong Yihe Rubber Conveyor Belt Co:, Ltd:, Shandong Xiangtong Rubber and Plastic Group Co:, Ltd:

Division, Qingdao University of Science and Technology:

1 Scope

This standard specifies the test method for the bond strength between the cover layer and the core layer of steel cord conveyor belts:

This standard applies to steel cord conveyor belts:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this document.

Pieces: For undated references, the latest version (including all amendments) applies to this document:

ISO 36 Determination of the bonding strength of vulcanized rubber or thermoplastic rubber to fabric (Rubber, vulcanized or thermoplastic-

Determinationofadhesiontotextilefabrics)

ISO 6133 Multimodal curve analysis in the determination of tear strength and adhesive strength of rubber and plastics (Rubberandplastics-

Analysisofmulti-peaktracesobtainedindeterminationsoftearstrengthandadhesionstrength)

ISO 18573 Conveyor Belt Test Environment and Condition Adjustment Time (Conveyorbelts-Testatmospheresandcondi-

tioningperiods)

3 Test principle

The force required to separate the cover layer from the tape core layer by the peeling method was measured:

4 devices

The tensile testing machine with gripper meets the requirements of ISO 36 for this equipment:

5 Sample

Take 6 samples with the following dimensions:

a) Belts without transverse members and with (or without) fabric reinforcement:

Length (lengthwise of the belt): minimum 150mm;

Width: 25mm minimum, and at least 2 steel wire ropes;

Thickness: The full thickness of the belt:

b) Belts with metal transverse parts:

Length (consistent with the direction of the wire rope): minimum 150mm;

Width: (25+/-0:5)mm;

Thickness: The full thickness of the belt:

Along the direction parallel to the axis of the belt, a sample is cut at least 50mm away from the belt edge:

Use a knife to close the upper and lower edges of the wire rope on both sides of the sample to peel off a section of the covering layer, which should be able to ensure that the sample is clamped in the testing machine

The clamping device is firm: