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德國拜耳TPU Desmopan 372物性表報價相關介紹如下：
Desmopan 445 | injection molding grade; grease and oil-resistant; good heat resistance; low compression set; Application; Automotive engineering; Injection molded engineering parts |
硬度與定伸應力和伸長率的關系以及硬度與撕裂強度的關系。隨著TPU硬度的增加，*定伸應力和300%定伸應力迅速增加，伸長率下降。這是由于硬度的增加主要是由于硬段含量增加的結果。硬段含量高，其所形成硬段相越易形成次晶或結晶結構增加了物理交聯的數量而限制材料變形。若使材料變形必須提高應力，從而提高了定伸應力，同時伸長率下降。TPU硬度與撕裂強度的關系，隨硬度增加，撕裂強度迅速增加，其理由亦與模量的解釋相同。
Hardness and stretch stress and elongation of the relationship and the relationship between hardness and tear strength.With the increase of TPU hardness, * stretch stress and stretch stress increased rapidly, 300% elongation decreased.This is due to the increase in hardness is mainly due to the increase of hard segment content, the result.High hard segment content, the formation of hard segment is more easy to form crystal or crystalline structure to increase the number of physical crosslinking and limit material deformation.If make the material deformation must improve stress, so as to improve the stretching stress and elongation decreased at the same time.TPU hardness and tear strength, with the increase of hardness and tear strength increased rapidly, its reason is the same as the modulus of explanation.
