The effect of thermocycling on peel strength of six soft lining materials.
The effect of thermocycling on peel strength of six soft lining materials.
复制标题
热循环对六种软衬里材料剥离强度的影响。
DOI：
10.1046/j.1365-2842.2002.00888.x
复制
发表时间：
2002
影响因子：
2.9
通讯作者：
B. Taskonak
中科院分区：
文献类型：
--
作者：
A. Sertgöz;Y. Kulak;H. Gedik;B. Taskonak
采用剥离试验方法，比较了两种热固化和四种冷固化软衬材料在热循环前后的粘结强度。测试的软衬里材料为Molloplast B、Mollosil、Ufigel P、Ufigel C、Permaquick和Permaflex。根据制造商的说明书为每组制备6个样本，6.5 x 2 x 0.3 cm。对照组在保湿箱中储存24小时，而其他组在5至55摄氏度的水浴中热循环5000次。使用Instron Universal测试机以5 mm min-1的十字头速度测量样品的剥离强度。使用电子显微镜观察失效类型。分别在热循环前后计算Permaflex和Permaquick的最高剥离粘合强度值。Molloplast B、Mollosil、Ufigel P和Permaquick在热循环后的剥离强度增加，Permaquick衬里材料具有统计学显著增加。然而，热循环后观察到Ufigel C和Permaflex的剥离强度降低。对照组中Molloplast B、Permaquick和Permaflex的失效模式为内聚，而Ufigel P和Ufigel C的失效模式为粘合。Mollosil证明了热循环组和对照组的混合失效模式。
The bond strength of two heat-cured and four cold-cured soft lining materials was compared using a peeling test method before and after thermocycling. Tested soft lining materials were Molloplast B, Mollosil, Ufigel P, Ufigel C, Permaquick and Permaflex. Six specimens, 6.5 x 2 x 0.3 cm, for each group were prepared according to the manufacturers' instructions. Control groups were stored in a humidor for 24 h, whereas the others were thermocycled in a water bath between the 5 and 55 degrees C for 5000 cycles. Peel strength of samples were measured using an Instron Universal testing machine at a cross-head speed of 5 mm min-1. The types of failure were observed using an electron microscope. The highest peel bond strength values were calculated for Permaflex and Permaquick before and after thermocycling, respectively. Molloplast B, Mollosil, Ufigel P and Permaquick demonstrated an increase in peel strength after thermocycling, with Permaquick lining material having statistically significant increase. However, decrease in peel strength was observed for Ufigel C and Permaflex after thermocycling. Failure mode within the control groups was cohesive for Molloplast B, Permaquick and Permaflex, whereas adhesive for Ufigel P and Ufigel C. Mollosil demonstrated a mixed mode of failure for both thermocycled and control groups.