Thermal degradation and flame retardant properties of isocyanate-based flexible polyimide foams with different isocyanate indices

2017 ◽  
Vol 652 ◽  
pp. 160-165 ◽  
Author(s):  
Aimin Xiang ◽  
Yan Li ◽  
Liwei Fu ◽  
Yajun Chen ◽  
Huafeng Tian ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Flame Retardant Properties

The influence of γ-irradiation on the mechanical, thermal degradation, and flame retardant properties of EVA/LDPE/ATH blends

2014 ◽  
Vol 119 (1) ◽  
pp. 167-173 ◽  
Author(s):  
Shun Zhou ◽  
Min Ning ◽  
Xiaofeng Wang ◽  
Zhijing Yan ◽  
Dongfeng Guo ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Γ Irradiation ◽  
Flame Retardant Properties

Wool: Its Effect On Flame Retardant Properties of Blend Fabrics

1983 ◽  
Vol 1 (2) ◽  
pp. 145-154 ◽  
Author(s):  
John V. Beninate ◽  
Brenda J. Trask ◽  
Timothy A. Calamari ◽  
George L. Drake
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Oxygen Index ◽  
Cotton Fabrics ◽  
Cotton Wool ◽  
Burning Rates ◽  
Low Levels ◽  
Flame Retardant Properties ◽  
Strength Retention

Durable phosphorus-based flame retardants were applied to twill fabrics con taining cotton and wool to study the effect of wool on the flame retardancy and physical properties of the blend fabrics. The presence of wool in untreated blend fabrics caused burning rates to decrease and oxygen index values to increase as wool content increased in the blends. These effects were also observed in cotton/ wool blends treated with low levels of the Thps-urea-TMM flame retardant, but were less pronounced in fabrics treated at high levels. Thermogravimetric analyses were conducted to study the thermal degradation of the treated and untreated fabrics. The presence of wool in treated blend fabrics did not sig nificantly change strength retention, area shrinkage and wrinkle recovery values in comparison to similarly treated 100% cotton fabrics.

Influence of Calcium Ion on Thermal Degradation and Flame Retardance Behaviour of Alginate Fiber

2013 ◽  
Vol 631-632 ◽  
pp. 447-451
Author(s):  
Guang Xiu Tian ◽  
Quan Ji ◽  
Feng Yu Quan ◽  
Yan Zhi Xia
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Calcium Ion ◽  
Calcium Alginate ◽  
Combustion Process ◽  
Limiting Oxygen Index ◽  
Metallic Salts ◽  
Flame Retardant Properties ◽  
Alginate Fibers ◽  
Alginate Fiber

Experimental research on calcium alginate fibers thermal degradation and flame retardancy under catalysis of metallic salts was done by limiting oxygen index (LOI), scanning electron microscopy (SEM), and thermogravimetric analysis (TG) methods. LOI results show that with increasing calcium ions content, the flame retardant properties of the calcium alginate fibers improves further. The residues of calcium alginate fibers gradually retained fiber shape and on the surface of the residues the holes reduced, with the calcium ion content increasing. TG indicates temperature at maximum rate of weight loss (T-max) was clearly shifted from 246 °C for alginic acid fibers to 244°C, 236°C, 208°C, 205 °C and 203°C (SCa-1-1# calcium alginate fibers, SCa-2-2# calcium alginate fibers, SCa-3-3# calcium alginate fibers, SCa-4-4# calcium alginate fibers, SCa-5-5# calcium alginate fibers), respectively. The thermal degradation residues at 1000°C for different calcium alginate fibers are 13.7%, 16.1%, 17.2%, 18.2%, 18.4%, 19.2%, separately. Further discussion of the combustion process and flame retardant mechanism is presented.

scholarly journals An Alginate Hybrid Sponge with High Thermal Stability: Its Flame Retardant Properties and Mechanism

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1973 ◽  
Author(s):  
Yuhuan Jiang ◽  
Xuening Pang ◽  
Yujia Deng ◽  
Xiaolu Sun ◽  
Xihui Zhao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Degradation ◽  
Flame Retardant ◽  
Calcium Alginate ◽  
Degradation Mechanism ◽  
Renewable Resource ◽  
High Thermal Stability ◽  
Carbonate Content ◽  
Limiting Oxygen Index ◽  
Flame Retardant Properties

The worldwide applications of polyurethane (PU) and polystyrene (PS) sponge materials have been causing massive non-renewable resource consumption and huge loss of property and life due to its high flammability. Finding a biodegradable and regenerative sponge material with desirable thermal and flame retardant properties remains challenging to date. In this study, bio-based, renewable calcium alginate hybrid sponge materials (CAS) with high thermal stability and flame retardancy were fabricated through a simple, eco-friendly, in situ, chemical-foaming process at room temperature, followed by a facile and economical post-cross-linking method to obtain the organic-inorganic (CaCO3) hybrid materials. The microstructure of CAS showed desirable porous networks with a porosity rate of 70.3%, indicating that a great amount of raw materials can be saved to achieve remarkable cost control. The sponge materials reached a limiting oxygen index (LOI) of 39, which was greatly improved compared with common sponge. Moreover, with only 5% calcium carbonate content, the initial thermal degradation temperature of CAS was increased by 70 °C (from 150 to 220 °C), compared to that of calcium alginate, which met the requirements of high-temperature resistant and nonflammable materials. The thermal degradation mechanism of CAS was supposed based on the experimental data. The combined results suggest promising prospects for the application of CAS in a range of fields and the sponge materials provide an alternative for the commonly used PU and PS sponge materials.

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