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ISO 37-2017 pdf free download
ISO 37-2017 pdf free download.Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
Caoutchouc vulcanisé ou thermoplastique — Determination des caractéristiques de contrainte-deformation en traction.
For non-product tests, the maximum time between vulcanization and testing shall be 4 weeks and, for evaluations intended to be comparable, the tests shall, as far as possible, be carried out after the same time interval.
For product tests, whenever possible, the time between vulcanization and testing shall not exceed 3 months. In other cases, tests shall be made within 2 months of the date of receipt of the product by the customer.
10.2 Protection of samples and test pieces
Samples and test pieces shall be protected as completely as possible from all external influences likely to cause damage during the interval between vulcanization and testing, e.g. they shall he protected from light and heat.
10.3 Conditioning of samples
Condition all samples, other than those from latex, in accordance with ISO 23529 at a standard laboratory temperature, without humidity control, for not less than 3 h prior to cutting out the test pieces.
Condition all prepared latex samples in accordance with ISO 23529 at a standard laboratory temperature, with humidity control, for not less than 96 h prior to cutting out the test pieces.
10.4 Conditioning of test pieces
Condition all test pieces in accordance with ISO 23529.11 the preparation of test pieces involves buffing. the interval between buffing and testing shall be not less than 16 h and not greater than 72 h.
For tests at a standard laboratory temperature, test pieces that do not require further preparation may be tested immediately, ilcut from conditioned test samples. Where additional preparation is involved, a minimum conditioning period of 3 h at standard laboratory temperature shall be allowed.
For tests at temperatures other than a standard laboratory temperature, condition the test pieces at the temperature at which the test is to be conducted for a period sufficient to enable the test pieces to attain substantial equilibrium in accordance with ISO 23529 (see also 742).
11 Marking of dumb-bell test pieces
If using a non-contact extensometer, mark the dumb-bell test pieces with two reference marks to define the test length as specified in Table 1 using a suitable marker. The test piece shall be unstrained when it is marked.ISO 37-2017 pdf free download.
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