Improvement in fire retardancy with double-step chemical modification on Pinus radiata D. Don using dimethyl methylphosphonate with propylene oxide and maleic anhydride

被引：6

作者：

Hom, Sanjeet Kumar ^{[1
]}

Ganguly, Sauradipta ^{[1
]}

Samani, Ajmal ^{[1
]}

Tripathi, Sadhna ^{[1
]}

机构：

[1] Forest Res Inst, Forest Prod Div, Wood Preservat Discipline, Dehra Dun, Uttarakhand, India

来源：

INTERNATIONAL WOOD PRODUCTS JOURNAL | 2020年 / 11卷 / 03期

关键词：

Chemical modification; fire retardancy; double-step modification; single-step modification; thermogravimetric analysis; derivative thermogravimetric; DIMENSIONAL STABILITY; WOOD;

D O I：

10.1080/20426445.2020.1765624

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Wood is prone to fire attack making its application restricted as building material. The current study aims to evaluate the effect of double step chemical modification on Pinus radiata using Dimethyl Methyl phosphonate with Propylene oxide and Maleic anhydride. Wood samples were modified by single step using Propylene oxide (PO) or Maleic anhydride (MA) and the double-step modification comprised firstly of pressure treatment with Dimethyl Methyl phosphonate (DMMP) followed by chemical modification using Propylene oxide (PD) or Maleic anhydride (MD). Thermal property was studied using Thermo Gravimetric Analysis (TGA) and Derivative Thermogravimetric (DTG). The chemical modification resulted in better thermal stability of wood than control wood. Among treatments PD showed best fire retardancy property with maximum weight loss at 367 degrees C with 18.2% residual mass. The preliminary study indicates that double step modification improved the thermal property increasing the temperature for maximum weight loss and residual mass comprising of char.

引用

页码：138 / 145

页数：8