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- 银纹:crazing
由于材料本身强度承受不起内在或外加的应力,塑料制品表面或内部所出现的如霜一般的细纹。
银纹现象是高聚物在溶剂、紫外光、机械力和内应力等作用下引起的形同微裂纹状的缺陷。
银纹:crazing - by Yurek
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- 银纹和裂纹极相似,不同之处在于裂纹中间是空的,银纹中间的空洞中有银纹质相连。银纹发展变粗,银纹质断裂,即成裂纹。银纹的出现和发展,使材料的机械性能迅速变差。塑料件成型后,在胶料流动的方向上出现银色的条纹。这是由于原料粒子干燥程度不够或者在注塑过程中胶料热稳定不强造成的。抗银纹性是塑料抵抗银纹出现和增长的能力,是塑料的重要性能指标之一。 - 银纹, crazing by Yurek
- 银纹化是玻璃态高聚物所特有的一种现象。聚合物的银纹损伤是一个复杂的多层次阶段,从微观层次的分子链间缠结链段的重排、滑移、取向、解缠及断链,到细观层次的银纹引发,生长及断裂,直到后继的微裂纹的产生、扩展、串接最终导致材料整体破坏。 - Crazing by Yurek
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Compare [close] Compare [close] - Italian
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- Collante monocomponente in soluzione per l’incollaggio di lastre estruse senza rischio di microfessurazioni (crazing). L’accurata formulazione della miscela di solventi utilizzati in questo collante consente incollaggi migliori di quelli con solventi convenzionali. Own research - by moranna (X)
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- Per caratteristiche intrinseche alla lavorazione (livello di
polimerizzazione e tensioni superficiali) i tubi lucidati "POLICRIL", se non adeguatamente temperati, possono generare
fenomeni di microfessurazione o "crazing" - policril by moranna (X)
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Compare [close] - French
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- Le tressaillage est la rupture de la couche de glaçure sous l'effet de contraintes mécaniques trop importantes avec le tesson. Il forme un réseau de fissures dont les mailles sont plus ou moins serrées selon l'amplitude des contraintes appliquées, l'épaisseur de la couche de glaçure et ses qualités mécaniques.
smart.conseil - by Alexandre Edo
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