LY/T 3150-2019Composition cork for shoe outsoles (English PDF)

3.1 Dimensions and Deviations

The specifications of composite cork blocks used in the production of soles are as follows.

a) Length. 950 mm, 1025 mm, 1250 mm;

b) width. 640 mm, 525 mm;

c) Thickness. 30 mm, 60 mm, 100 mm, 150 mm,.200 mm.

According to the agreement between the supply and demand parties, composite cork for soles of other specifications can be produced.

The dimensional deviation should meet the requirements of Table 1.

Table 1 Dimensional deviation requirements

Project requirements Length deviation <=1.00 mm Width deviation <= 0.70 mm Thickness deviation when nominal thickness is 30 mm, 60 mm, 100 mm, <=0.25 mm <=0.50 mm when nominal thickness is 150 mm,.200 mm

3.2 Density

The density of the composite cork block or board is >= 250 kg/m3, and it shall be tested according to the provisions of 5.3.2.

3.3 Water content

The moisture content of the composite cork block or board is <= 8%, and it shall be tested according to the provisions of 5.3.3.

3.4 Resistance to boiling water

After testing according to the provisions of 5.3.4, the composite cork block or board did not crack or dissolve.

3.5 Water retention and loss

The composite cork block or board has a water retention rate of <= 30% and a water loss rate of > 40%, and is tested in accordance with 5.3.5.

3.6 Bending resistance

Bending pressure of 1 MPa shall be applied for testing of non-immersed test pieces, and bending pressure of 0.5 MPa shall be applied for testing of immersed test pieces, according to 5.3.6 the specified test method, no cracking of composite cork block or board.

3.7 Mold resistance

After testing according to the provisions of 5.3.7, there is no mold growth on the surface of the composite cork block or board.

3.8 Tensile strength

The tensile strength of the composite cork block or board >= 0.2 MPa shall be tested in accordance with the provisions of 5.3.8.

5.1 Equipment

5.1.1 Steel tape measure with a length of 3 m and a graduation value of 1.0 mm.

5.1.2 Steel ruler with a division value of 0.5 mm.

5.1.3 Micrometer with a division value of 0.01 mm.

5.1.4 Vernier caliper, division value is 0.1 mm.

5.1.5 Balance, Sensitivity 0.01 g.

5.1.6 Water tank for water retention rate and water loss rate test.

5.1.7 Electric circular saw.

5.1.8 Erlenmeyer flask with a capacity of 250 mL.

5.1.9 reflux condenser.

5.1.10 Heating device.

5.1.11 million capacity test machine, accuracy ± 1 N.

5.2 Test specimen

5.2.1 Preparation

See Table 2 for specimen size and quantity. Saw the required specimen at both ends and in the middle of the specimen.

Table 2 Specimen size and quantity

project

Specimen size

Number of test pieces Note Density 50 × 50 3-Water content 50 × 50 × 25 3-Boiling water resistance 50 × 50 × 25 3-Water retention rate and water loss rate 175 × 75 × 25 (3 *) Used for bending resistance test after testing Bending resistance 175 × 75 × 25 3 (3 *) (3 *) from water retention and water loss detection items Mildew resistance 50 × 50 × 25 5-Tensile strength 100 × 50 × 25 3-

5.2.2 Balance processing

Before the test, the test pieces were equilibrated for 24 h in a constant temperature and humidity chamber at a temperature (23 ± 2) ° C and a relative humidity (50 ± 5)%. All try the test is performed at room temperature.

5.3 Test procedure

5.3.1 Specifications

In accordance with the provisions of GB/T 18103.

5.3.2 Density

The test method for density determination shall meet the requirements of GB/T 17657.

5.3.3 Water content

The test method for the determination of the water content shall be in accordance with GB/T 17657.

5.3.4 Resistance to boiling water

The test method for the determination of boiling water resistance shall meet the requirements of LY/T 1657.

5.3.5 Water retention rate and water loss rate

5.3.5.1 Test procedure

Weigh the test piece (m0), immerse the test piece in a water tank filled with distilled water, and soak it for 3 days. Remove the test piece and wipe off the surface with filter paper for excess water, weigh the test piece again (m1). Place the test piece at room temperature for 16 h, and weigh the test piece for a third time (m2). As above the procedure measures 3 test pieces.

5.3.5.2 Test data processing

The water retention rate (R) and water loss rate (P) of the test piece are expressed as a percentage (%) and calculated according to formula (1) and formula (2).

-m1m

In the formula.

m0-initial mass of the test piece in grams (g), accurate to 0.01 g;

m1-the mass of the test piece after immersion in water, the unit is gram (g), accurate to 0.01 g;

m2 --The mass of the test piece at room temperature, the unit is gram (g), accurate to 0.01 g.

Take the arithmetic mean of the test results of 3 test pieces to the nearest 0.1%.

5.3.6 Bend resistance

Measure according to the test method specified in Appendix A, determine the number of test specimens according to Table 2, and measure the water retention rate and water loss rate.

The test specimens shall be tested for flexural resistance.

5.3.7 Mold resistance

5.3.7.1 Test procedure

Place the test piece in a constant temperature and humidity incubator ((35 ± 5) °C, relative humidity >=90%) for 7 d, remove the sample from the incubator, and visually observe Check for mold growth on the surface of the test piece.

5.3.7.2 Test results

Indicate whether there is mold growth on the surface of the test piece.

5.3.8 Tensile strength

The test method for the determination of tensile strength shall meet the requirements of LY/T 1657.

5.4 Test report

The test report should include.

a) The name, category, manufacturer, etc. of the product under inspection;

b) the standards used (including the year of publication or publication);

c) test results and conclusions;

d) abnormal phenomena and problems that need to be explained during the test;

e) Test date.

6.1 Signs

6.1.1 Product marking

Before the product is put in storage, the traceability information of the product should be marked on the appropriate part of the product.

6.1.2 Packaging label

The packaging label should include the manufacturer's name, address, contact information, product name, implementation standard number, production date, quantity, and specifications.

Grid size and other information.

6.2 Packaging

The products should be packed separately according to the product specifications and categories when they leave the factory. There should be a product certificate in the package. Packaging must be moisture-proof Bumps, scratches, and stains. Packaging requirements can also be agreed between the supplier and the buyer.

6.3 Transport and storage

Products should be stacked flat during transportation and storage to prevent contamination and must not be exposed to moisture, rain and exposure. Storage should be based on category, specifications, the grades are stacked separately, and each pile should be marked accordingly.

Appendix A

(Normative appendix) Test method for flexural performance A.1 Equipment A.1.1 Universal Capability Tester the accuracy is 1 N, equipped with support rollers and loading rollers, and the vertical loading speed of the loading rollers is 30 cm/min. Two support rollers are steel cylinders Shape, the diameter of the support roller is (20 ± 2) mm, and the distance between the two support rollers can be adjusted. The loading roller is also made of steel with a diameter of (20 ± 2) mm. The loading roller is placed in parallel with the two support rollers, and the distance between the load roller and the two support rollers is equal.

A.2 Test procedure

Tests were performed at room temperature and humidity. Measure the length, width and thickness of the test piece according to the provisions of GB/T 18103, and adjust the span between the two supports it is 5 times the nominal thickness of the test piece, and then lay the test piece flat on the support. The long axis of the test piece is perpendicular to the support roller.

Load at a constant speed and record the maximum load that caused the specimen to rupture.

A.3 Test data processing the static bending strength of the test piece is accurate to 0.01 MPa, and calculated according to formula (A.1).

2b2

xx l

In the formula.

F-maximum load when the test piece is broken, the unit is Newton (N);

l-the distance between the two supports, in millimeters (mm);

b-width of test piece, unit is millimeter (mm);

delta-thickness of test piece, unit is millimeter (mm).

Take the arithmetic mean of the test results of 3 test pieces, accurate to 0.01 MPa.