Thiourethane-based thiol-ene high Tg networks:: Preparation, thermal, mechanical, and physical properties
Thiourethane-based thiol-ene high Tg networks:: Preparation, thermal, mechanical, and physical properties
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DOI：
10.1002/pola.22252
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发表时间：
2007-11-15
影响因子：
--
通讯作者：
Hoyle, Charles E.
中科院分区：
文献类型：
--
作者：
Li, Qin;Zhou, Hui;Hoyle, Charles E.
以二异氰酸酯、四官能硫醇和三烯为原料，制备了硫代氨基甲酸乙酯基硫醇-烯（TUTE）薄膜。将硫代氨基甲酸酯键结合到硫醇-烯网络中导致具有高玻璃化转变温度的TUTE膜。通过在室温下老化并在85 ℃下退火UV固化膜来实现T1的增加。具有硫醇的老化/退火膜由异佛尔酮二异氰酸酯制备并以10，080-mJ/cm（2）辐射曝光固化，具有最高的基于DMA的玻璃化转变温度（108 ℃）和具有22 ℃的半高全宽（FWHM）的tan δ峰，表明非常均匀的基质结构。所有最初制备的TUTE膜表现出良好的物理和机械性能的基础上，铅笔硬度，摆锤硬度，冲击，和弯曲测试。(c)2007 Wiley Periodicals，Inc.
Thiourethane-based thiol-ene (TUTE) films were prepared from diisocyanates, tetrafunctional thiols and trienes. The incorporation of thiourethane linkages into the thiol-ene networks results in TUTE films with high glass transition temperatures. Increases of T, were achieved by aging at room temperature and annealing the UV cured films at 85 degrees C. The aged/annealed film with thiol prepared from isophorone diisocyanate and cured with a 10,080-mJ/cm(2) radiant exposure had the highest DMA-based glass transition temperature (108 degrees C and a tan 6 peak with a full width at half maximum (FWHM) of 22 degrees C, indicating a very uniform matrix structure. All of the initially prepared TUTE films exhibited good physical and mechanical properties based on pencil hardness, pendulum hardness, impact, and bending tests. (c) 2007 Wiley Periodicals, Inc.