共混热塑性弹性体热熔压敏胶的制备及性能研究

Preparation and properties of hot melt pressure sensitive adhesive based on thermoplastic elastomer blends

以苯乙烯热塑性弹性体（HYBRAR7311和丙烯酸酯热塑性弹性体LA2250）为主体树脂，2种材料优势互补，制备的热熔压敏胶HMPSA性能优良，且工艺设备简单。采用正交实验较优热熔压敏胶配比，在此基础上探讨了填料硅微粉对热熔压敏胶性能的影响，并比较了较优配方热熔压敏胶与自制SIS热熔压敏胶和乳液压敏胶的力学性能。针对3种压敏胶力学性能上的差异，对3种压敏胶的粘弹性能进行了对比研究，结果表明，压敏胶在低频区0.01-0.1Hz贮能模量越小，初粘性越大，E’’f/E’1f越大f=32.03Hz,f=0.07Hz，剥离强度越大。

The styrenic thermoplastic elastomer （HYBRAR7311） and acrylate thermoplastic elastomer （LA2250） were blended as the matrix resin.These two materials have complementary advantages and can obtain the hot melt pressure sensitive adhesives （HMPSA） with good performance. Furthermore, the process equipments are simple.The orthogonal experiments were used to find the better formulation of hot-melt pressure-sensitive adhesive. On this basis, the effect of silicon powder on HMPSA performance was studied and the mechanical properties of better HYBRAR7311/LA2250 HMPSA and self-made SIS HMPSA and acrylate emulsion PSA were compared. According to the mechanical performance and the viscoelastic properties, the smaller storage modulus at low frequency （0.01- 0.1 Hz）, the greater the tack was. The peel strength was proportional to E”（f ）/ E’（f ） （f = 32.03 Hz, f =0.07 Hz）.