标准编号：ISO 34-1:2015
中文名称：硫化橡胶或热塑性橡胶 撕裂强度的测定 第1部分：裤形、直角形和新月形试样
英文名称：Rubber, vulcanized or thermoplastic — Determination of tear strength — Part 1: Trouser, angle and crescent test pieces
发布日期：2015-06
标准范围
This part of ISO 34 specifies three test methods for the determination of the tear strength of vulcanizedor thermoplastic rubber, namely the following:— method A, using a trouser test piece;— method B, using an angle test piece, with or without a nick of specified depth;— method C, using a crescent test piece with a nick.The value of tear strength obtained depends on the shape of the test piece, speed of stretching, andtemperature of test. It can also be susceptible to grain effects in rubber.Method A: Using a trouser test pieceMethod A, using the trouser test piece, is preferred because it is not sensitive to the length of the cut,unlike the other two test pieces in which the nick has to be very closely controlled. In addition, theresults obtained are more easily related to the fundamental tear properties of the material and are lesssensitive to modulus effects (provided that the leg extension is negligible) and the rate of propagation ofthe tear is directly related to the rate of grip separation. With some rubbers, the propagation of tear isnot smooth (knotty tear), and analysis of results can be difficult.[3]Method B, procedure (a): Using an angle test piece without nick
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