GB/T 3903.39-2019 (GB/T 3903.39-2019 Newer Version) PDF English.

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GB/T3903.39-2019 (GBT3903.39-2019): PDF in English

GB/T 3903.39-2019 Footwear - Test methods for uppers - Delamination resistance ICS 61.060 Y78 National Standards of People's Republic of China Replace GB/T 3903.39-2008 Footwear test method (ISO 17698.2016, IDT) Published on.2019-08-30 2020-03-01 implementation State market supervision and administration China National Standardization Administration issued Foreword This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 3903.39-2008 "Sheet upper test method for interlayer peel strength", and GB/T 3903.39- Compared to.2008, the main technical changes are as follows. --- Revised scope (see Chapter 1, Chapter 1 of the.2008 edition); --- Revised the canonical reference document (see Chapter 2, Chapter 2 of the.2008 edition). This section uses the translation method equivalent to ISO 17698.2016 "Shoes upper test method interlayer peel strength". The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows. ---GB/T 3903.7-2019 footwear footwear test method aging treatment (ISO 20870..2017, IDT) ---GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696.1987, MOD) --- GB/T 16825.1-2008 Inspection of static single-axis testing machines - Part 1. Tensile and/or Inspection and calibration (ISO 7500-1.2004, IDT) ---GB/T 22049-2019 Standard environment for environmental conditioning and testing of footwear footwear and footwear components (ISO 18454.2018, IDT) ---GB/T 22050-2008 Sampling position, preparation and environmental adjustment time of footwear samples and samples (ISO 17709.2004, IDT) Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This part was proposed by the China Light Industry Federation. This part is under the jurisdiction of the National Technical Committee for the Standardization of Footwear (SAC/TC305). This section drafted by. China Leather and Footwear Industry Research Institute Wenzhou Institute, China Leather Shoes Research Institute Co., Ltd., Zhejiang Olympics Kang Shoes Industry Co., Ltd. The main drafters of this section. Chen Qixian, Yu Shuxian, Wang Zhenduo, Feng Xugen. The previous versions of the standards replaced by this section are. ---GB/T 3903.39-2008. Footwear test method 1 Scope This part of GB/T 3903 specifies the test method for the peel strength between the layers, in order to assess the suitability of the end use. This section applies to the upper surface of coated materials. 2 Normative references The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. ISO 3696 Analytical Laboratory Water Specifications and Test Methods (Waterforanalyticallaboratoryuse-Specification) Andtestmethods) ISO 7500-1 - Calibration and testing of static single-axial testing machines - Part 1 . Tension and/or pressure testing machines Calibration and verification of force measurement systems (Metalicmaterials-Calibrationandverificationofstaticuniaxialtestingma- chines-Part 1.Tension/compressiontestingmachines-Calibrationandverificationoftheforce-meas- Ouringsystem) ISO 17709 Sampling position, preparation and environmental conditioning time for footwear samples and specimens (Footwear-Samplinglocation, Preparationanddurationofconditioningofsamplesandtestpieces) ISO 18454 Standard environment for environmental conditioning and testing of footwear footwear and footwear components (Footwear-Standardatmospheres Forconditioningandtestingoffootwearandcomponentsforfootwear) ISO 20870 Footwear-Ageingification 3 Terms and definitions The following terms and definitions apply to this document. 3.1 Interlaminar peel strength delaminationresistance The bond strength between the coating and the base material. 4 Test equipment and materials The following equipment and materials should be used. 4.1 Tensile testing machine, the moving speed of the clamp is (100±10)mm/min, and the applicable force range of the sample (for polyurethane coating) Fabric sample) is usually 0N~200N, the accuracy of measuring force should meet the requirements of level 2 in ISO 7500-1, and the force measurement accuracy is large. At 2%. 4.2 Automatic recorder, or similar equipment, can continuously record force values. 4.3 Rapid plate press, capable of applying (550 ± 50) kPa pressure in an area of 50 mm × 70 mm. 4.4 Rubber sheet with a thickness of at least 10 mm and a hardness of (40 ± 10) IRHD. 4.5 Radiant heater, power 3kW, heating area is about 0.06m2, can heat the dry film on the resin rubber to 80 °C within 15s~ 90 ° C. The film is usually placed approximately 100mm~150mm from the heater. It is advisable to use the outsole used in the production of shoes and Activating device for the face. 4.6 Thermal pen or temperature gun, check the temperature of the film at 80 ° C ~ 90 ° C equipment. It is advisable to use a thermal pen or red with a melting temperature of 83 °C. External temperature gun. 4.7 Resin rubber, thickness (3.5 ± 0.2) mm, hardness (95 ± 2) IRHD, surface peel strength is greater than the sample to be tested. Note. IRHD is the international rubber hardness, hardness (95 ± 2) IRHD equivalent to (95 ± 2) Shore A. 4.8 Solvent-based polyurethane adhesive with good adhesion to resin rubber and sample coating. 4.9 Adhesive treatments, such as halogenating agents, can effectively increase the adhesion of rubber in the production of footwear. 4.10 Cutting equipment, such as punching or scissors, can cut rectangular specimens of size (50 ± 1) mm × (70 ± 1) mm. In addition, if yes Hydrolyzed samples were tested and another shear tool was required to cut a square specimen with a side length of (70 ± 1) mm. 4.11 Shearing tools, such as sharp knives or disc knives, can be sampled from bonded specimens. This device should not be excessively compressed or will be sampled The edge of the sample is layered, so it is not advisable to use a punching knife. 4.12 Distilled or deionized water. If wet bond strength is measured, use tertiary or deionized water in accordance with ISO 3696. 4.13 Timer, range 30s, accurate to 0.5s. 5 sampling 5.1 For dry tests, mark six rectangles (70 ± 1) mm × (50 ± 1) mm on the back of the sheet or upper. two long sides and sheets Parallel to the direction (machine direction or ridge line direction) or in the X-axis direction of the sill (as defined in ISO 17709), the other four long sides and the above The direction is vertical. 5.2 For the wet test, mark two rectangles (70 ± 1) mm × (50 ± 1) mm on the back of the material or upper, and place the 50 mm edge. Consistent with the direction of the lowest peel strength (if known) in the dry test, or prepare six more rectangles as shown in 5.1. 5.3 Further marking on the material, divide the rectangular material marked in 5.1 and 5.2 into two pieces, (35 ± 0.5) mm × (50 ± 1) mm. Mark the machine direction or X-axis direction on each small rectangular specimen. Use the arrows to mark the direction and make sure the arrows point in the same direction. Correct For the upper face, the arrow should point to the toe. 5.4 For the damp heat aging test, two squares are required to be marked with a side length of (70 ± 1) mm and sides parallel to the X axis. Marking machine by 5.3 Arrow in the direction of the device or in the direction of the X axis. Note. It is recommended to use the chamfer method for marking because the wet or damp heat aging treatment can make the mark imprint fade. 5.5 Take the rectangle marked in 5.1 and 5.2 and the square marked in 5.4 from the sheet or the upper surface, and then cut each material into two (30 ± 0.5) mm × (50 ± 1) mm sample, see Figure 1. After bonding with the resin rubber, each piece of material is subsequently cut into two layers From the sample. Some types of shoes may not be cut to the specified size, in which case a sample should be taken from the sample and the size can be Reduce to (40 ± 1) mm × (50 ± 1) mm, and no further cutting according to the requirements of 5.3. 5.6 Cut (50 ± 1) mm × (70 ± 1) mm rectangular resin rubber on each piece of resin on the resin rubber according to the relevant dimensions in 5.5. (4.7). If the radiant heater (4.5) needs to be calibrated before use, an additional one or two pieces of resin rubber should be cut. The unit is mm Description. 1---cut direction; 2---about 5mm; 3---stitch; 4---cut line; 5---bar paper. Note. Samples can be taken from the upper material, the forming surface or the finished shoe. Figure 1 sample assembly drawing 6 Test methods 6.1 Test principle The coating of the sample is bonded to the resin rubber block with a strong adhesive. In the state where the finishing layer is still bonded to the rubber, the tensile test is used. The force required to peel the sample from the resin rubber was measured. Wet samples and hydrolyzed samples can also be tested. 6.2 Test procedure 6.2.1 Place a strip of paper (75 ± 5) mm × (15 ± 3) mm on the finish of each side of the material cut in 5.5. will The strips are stapled (or similar) to secure the two ends. The position of the staples is shown in Figure 1. From the four specimens of the dry test (marked arrow Take two specimens to its long side. The direction of the paper is placed in the same direction as the arrow. On the other two specimens, the paper is placed along the opposite side. 6.2.2 If a treatment agent (4.9) can be used, it should be applied to the resin rubber cut from 5.6 according to the supplier's instructions. The entire back. 6.2.3 Allow the resin rubber to dry completely according to the requirements of use. 6.2.4 Apply a polyurethane adhesive (4.8.......
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