Two-liquid type acrylic structural adhesive of the storage stability.

• Main Authors: Chih-Hui Lin, 林志慧
• Other Authors: 芮祥鵬
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/3r588e

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 97 === This paper mainly discusses the two-liquid type acrylic structure adhesive can be part to replace the epoxy glue. Given the current market the two liquid type epoxy structure adhesives storage stability and the expiration date than acrylic plastic storage stability and the Expiration date of good, but it can’t fast-curing at room temperature ; the plan''s to study to replace the epoxy structure glue, can be at room temperature fast-curing, but also to have long-term preservation of the date of acrylic structural adhesive. However, the structure of acrylic plastic at room temperature to preserve the date of the short, to be stored at low temperatures, it is to add anti-oxidants, so that the structure of acrylic plastic at room temperature for a better shelf life for 6 months, but the physical nature and mechanical properties after storage for 6 months is similar to the original. This study found that when acrylic structural adhesive does not add anti-oxidants, the MMA：2-HEMA for different weight ratio to test the storage stability and thermal stability. Experimental study found that the volume of 2-HEMA add more equipment to DSC, remoter equipment analysis, glue after 3 months storage at room temperature environment for the conduct of the test, the endothermic maximum peak temperature and viscosity of the lower value the more high, this shows that the process of dispensing their own time response has been slow. Then several of the baking oven electronic acceleration aging test, the mobility of the liquid slowly deteriorated, or gel (gel) the shorter the time. When the MMA : 2-HEMA for the 100：0 and 90：10 weight ratio of the base when the formula did not add anti-oxidants of accelerated aging test of time than other to-weight ratio of the best, but for the MMA : 2-HEMA 100：0, the reaction of curing time slightly slower, so experiment to study MMA : 2-HEMA for the 90：10 test. Therefore, MMA : 2-HEMA for the 90：10 weight ratio of formula to add different types of anti-oxidants, the experimental study of a single antioxidant know to add, after the accelerated aging test did not add to the storage stability prior to a slight increase in However, after six months, and its poor storage stability. The last change to add two phenolic antioxidants, its storage stability and mechanical properties similar to those with no major changes in the original recession.