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首页> 外文期刊>Journal of Applied Polymer Science >Reversible adhesives based on acrylate copolymer modified by caffeic acid containing boroxin
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Reversible adhesives based on acrylate copolymer modified by caffeic acid containing boroxin

机译：基于丙烯酸酯的丙烯酸含硼酸改性的可逆粘合剂

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摘要

4-formyl-phenylboronic acid (FBA) and caffeic acid (CA) can combine to obtain a novel vinyl monomer containing boroxin, which was named as FBCA. Having been reduced the inhibition of phenolic hydroxyl groups, FBCA could directly copolymerize with acrylate (for instance, isobornyl acrylate (IBOA), butyl acrylate (BA), and hydroxypropyl methacrylate (HPMA)) by free-radical polymerization to produce modified acrylate copolymer adhesive (FBCA-IBH). Compared with sole acrylate copolymer adhesive (IBH), the FBCA-IBH adhesive presents a higher thermal stability, cohesive strength, creep resistance, strain recovery, and adhesion strength to different substrate (such as carbon steel, polypropylene (PP), and polytetrafluoroethylene (PTFE)). According to the results of TGA, the initial degradation temperature of FBCA-IBH is increased by 50 degrees C. The creep resistance of FBCA-IBH is improved and its holding power to carbon steel is increased from 19 min to 3 h. It is eye catching that the shear strength to carbon steel could reach 9.37 MPa. Besides, this shear strength can be maintained even if after 18 cycle times, even the maximum value can achieve 14.36 MPa. The adhesion of thermoplastic adhesives to carbon steel exhibits adhesion strength comparable to that of thermoset adhesives. The reversible adhesive presents bonding strength in macro-field, not just limited in micro-field. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48703.
机译：4-甲酰基 - 苯基硼酸（FBA）和咖啡酸（CA）可以组合以获得含有硼氟的新型乙烯基单体，其被命名为FBCA。通过自由基聚合，减少了FBCA可直接用丙烯酸酯（例如，异丙甲酸丙烯酸酯（IboA），丙烯酸丁酯（IboA），丙烯酸丁酯（Ba）和羟丙基丙烯酸叔丙烯酸丙烯酸叔丙烯酸羟丙基丙烯酸酯（HPMA））。生产改性丙烯酸酯共聚物粘合剂（FBCA-IBH）。与唯一的丙烯酸酯共聚物粘合剂（IBH）相比，FBCA-IBH粘合剂呈现出较高的热稳定性，粘性强度，抗蠕变性，应变恢复和与不同基材的粘合强度（如碳钢，聚丙烯（PP）和聚四氟乙烯（ PTFE）））。根据TGA的结果，FBCA-IBH的初始降解温度增加了50℃。FBCA-IBH的蠕变电阻得到改善，并且其对碳钢的保持能力从19分钟增加到3小时。它是眼睛捕捉到碳钢的剪切力量可以达到9.37MPa。此外，即使在18次循环时间之后，也可以保持这种剪切强度，即使最大值也可以实现14.36MPa。热塑性粘合剂与碳钢的粘合性表现出与热固性粘合剂相当的粘合强度。可逆粘合剂在宏观场中呈现粘合强度，不仅限于微场。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48703。

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