ポリオレフィン系繊維の摩耗の温度依存性について
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概要
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The mechanisms of wear phenomena for fibrous materials are classified in four kinds under various rubbing conditions as follows ; (1) frictional wear, (2) ploughing or abrasive wear, (3) shaving wear and (4) fatigue wear. In this experiment, the steel roller (18mmφ) with sharp bezels on surface is used for the abradant, in order to carry on the experiment under the shaving wear condition. The samples used are monofilaments of polypropylene (417^d) and polyethylene (402^d). The following results are obtained ; (1) The dead weight added on the fiber during wear test, S_B, is expressed as follows; S_B= C_0N^<-K_s>_B where N_B is the number of rubbing cycles up to rupture, C_0 and K_S are constants. (2) The temperature dependence of dead weight to break at N_B=1000, S_<B・1000>, shows two maxima for both the polymers. (3) In the case of polypropylene, the maxima of S_<B・1000> appear at about 48℃ and 98℃ . In the region 20 〜50℃ , there is but little change in tensile strength, elongation and total frictional force, therefore the maximum of S_<B・1000> in both the polymers shows very similar behavior with each other against the reduced temperature, T-T_<α_a>, where T_<α_a> is the temperature at which the main dispersion appears in the dynamic viscoelastic behavior of the polymers. Consequently, the temperature dependence of wear-resistance seems to be dependent on polymer properties, especially molecular motion of polymer. (5) The relationship between the wear resistance and the mechanical properties is described qualitatively as follows; amount of wear loss ∝<total frictional force>/<modulus×tensile strength×elongation>.
- 社団法人日本材料学会の論文
- 1965-04-15
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