Properties of Rigid Polyurethane Foam Modified by Tung Oil-Based Polyol and Flame-Retardant Particles
Properties of Rigid Polyurethane Foam Modified by Tung Oil-Based Polyol and Flame-Retardant Particles
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桐油基多元醇与阻燃颗粒改性硬质聚氨酯泡沫塑料的性能
DOI：
10.3390/polym12010119
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发表时间：
2020-01
期刊：
影响因子：
5
通讯作者：
Zhou Yong-Hong
中科院分区：
文献类型：
--
作者：
Zhou Wei;Hao Shu-Jie;Feng Guo-Dong;Jia Pu-You;Ren Xiao-Li;Zhang Meng;Zhou Yong-Hong
桐油是一种可再生材料，在国内具有丰富的产量和低廉的价格，用于合成硬质聚氨酯泡沫（RPUF）的不同多元醇，但通过重新设计配方来提高硬质聚氨酯泡沫（RPUF）的性能仍然是一个挑战。因此，我们提出了四种新的化合物来增强RPUF的性能，即无催化剂合成的桐油基多元醇（PTOK）、磷酸铝微胶囊（AM）、二氧化硅微胶囊（SiM）和在SiO2表面接枝的桐油环氧化单甘油酯（SiE）。由于PTOK具有催化作用，一些RPUF样品的发泡过程是无催化剂的。结果表明，AM、SiM和SiE的掺入使RPUF在高温下具有更好的热稳定性，RPUF的T5%、Tmax1和Tmax2出现降低，而Tmax3和800℃时的残留率有所提高，这可能对火灾时延长救援时间有积极作用，极限氧指数（LOI）值提高到22.6%。该配方含有25%的PTOK，使RPUF更加环保。通过对比rpuf的孔径和力学性能得出，AM在泡沫中的分散性较好，泡沫具有较好的力学、耐热性和阻燃性。
Although tung oil is renewable, with an abundant production and low price in China, and it is used to synthesize different polyols for rigid polyurethane foam (RPUF), it remains a challenge to improve the properties of RPUF by redesigning the formula. Therefore, we propose four novel compounds to strengthen the properties of RPUF, such as the catalyst-free synthesis of tung oil-based polyol (PTOK), aluminum phosphate micro-capsule (AM), silica micro-capsule (SiM), and grafted epoxidized monoglyceride of tung oil on the surface of SiO2 (SiE), which were designed and introduced into the RPUF. Because of the PTOK with a catalytic function, the foaming process of some RPUF samples was catalyst-free. The results show that the incorporation of AM, SiM, and SiE, respectively, endow RPUF with a better thermal stability at a high temperature, and the T5%, Tmax1, and Tmax2 of RPUF appeared to be reduced, however, the Tmax3 and residue rate at 800 °C were improved, which may have a positive effect on the extension of the rescue time in case of fire, and the limiting oxygen index (LOI) value was increased to 22.6%. The formula, containing 25% PTOK made the RPUF environment-friendly. The results were obtained by comparing the pore size and mechanical properties of the RPUF—the AM had a better dispersion in the foam, and the foam obtained a better mechanical, thermal, and flame retardancy.
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影响因子：
3.2
作者：
A. Maghyereh;Basil Awartani;Osama D. Sweidan
通讯作者：
A. Maghyereh;Basil Awartani;Osama D. Sweidan
影响因子：
--
作者：
Zhengzhou Wang;Xiaoyan Li
通讯作者：
Zhengzhou Wang;Xiaoyan Li
影响因子：
5.1
作者：
Tian, Huafeng;Yao, Yuanyuan;Xiang, Aimin
通讯作者：
Xiang, Aimin
影响因子：
3
作者：
Bhoyate, Sanket;Ionescu, M.;Gupta, Ram K.
通讯作者：
Gupta, Ram K.
次磷酸铝与可膨胀石墨组合作为硬质聚氨酯泡沫的新型阻燃系统
影响因子：
3.4
作者：
Yang, Hongyu;Wang, Xin;Yuen, Richard K. K.
通讯作者：
Yuen, Richard K. K.