复合型阻燃剂对无醛超低密度纤维板性能的影响

doi:10.3969/j.issn.0253-2417.2019.03.012

林产化学与工业 ›› 2019, Vol. 39 ›› Issue (3): 87-93.doi: 10.3969/j.issn.0253-2417.2019.03.012

复合型阻燃剂对无醛超低密度纤维板性能的影响

詹满军,陈志林,储富祥*()

中国林业科学研究院, 北京 100091

收稿日期:2019-01-30 出版日期:2019-06-28 发布日期:2019-06-26
通讯作者: 储富祥 E-mail:chufuxiang@caf.ac.cn
作者简介:詹满军(1982-),男,安徽安庆人,高级工程师,硕士,主要从事人造板加工工艺研究工作
基金资助:
广西创新驱动发展专项资金项目(桂科AA17204065-18)

Effect of Hybrid Flame Retardant on Properties of Formaldehyde-free Ultra-low Density Fiberboard

Manjun ZHAN,Zhilin CHEN,Fuxiang CHU*()

Chinese Academy of Forestry, Beijing 100091, China

Received:2019-01-30 Online:2019-06-28 Published:2019-06-26
Contact: Fuxiang CHU E-mail:chufuxiang@caf.ac.cn
Supported by:
广西创新驱动发展专项资金项目(桂科AA17204065-18)

摘要/Abstract

摘要：

采用磷-氮-硼（P-N-B）复合阻燃剂以及豆粕胶黏剂复配异氰酸酯（PMDI）胶黏剂制备无醛超低密度纤维板（NUDF），探讨阻燃剂添加量对无醛超低密度纤维板物理力学性能、甲醛释放量以及阻燃性能的影响。研究结果表明：随着阻燃剂添加量（0~8%）增加，NUDF的物理力学性能和甲醛释放量均有所降低，氧指数逐渐升高，总热释放量降低，纤维板成炭现象更明显，可燃性显著降低。当阻燃剂添加量6%时，NUDF综合性能较优，内结合强度0.41 MPa、静曲强度14.5 MPa，24 h吸水厚度膨胀率8.1%，甲醛释放量2.0 μg/g，燃烧长度80 mm，相同测试时间内不易被引燃，氧指数32.5%，600 s总热释放量12 MJ/m²。纤维板达到GB 8624—2012平板状建筑材料难燃B1~C级，产烟等级满足S1级，具有良好力学性能、环保和阻燃性能。锥形量热分析表明：随着阻燃剂添加量的增加，燃烧过程中基本呈现总热释放量降低、总烟量升高、CO产率增大和CO₂产率减小的趋势。

关键词: 阻燃剂, 超低密度纤维板, 总热释放量

Abstract:

Formaldehyde-free ultra-low density fiberboards(NUDF) were prepared by P-N-B hybrid flame retardants and isocyanate(PMDI) adhesive. The effects of P-N-B flame retardant addition on the physicochemical properties, formaldehyde emission, and flame retardant performance of NUDF were investigated. The results showed that the physico-mechanical property and formaldehyde emission of NUDF gradually declined with the increase of P-N-B flame retardants amount(0-8%). However, the flammability of NUDF significantly decreased, the oxygen index increased, total heat release decreased, and carbonization phenomenon of UNDF was obvious. The NUDF displayed optimized performance as the flame retardant addition reached 6%. Specifically, the internal bonding strength(IB), modulus of rupture(MOR), the thickness expansion rate of water absorption for 24 h(24 h TS), formaldehyde release and combustion length was 0.41 MPa, 14.5 MPa, 8.1%, 2.0 μg/g and 80 mm, respectively. The oxygen index was 32.5% and total heat release of 600 s was 12 MJ/m². The flame retardant and smoke production performance of NUDF met the B1-C and S1 grade of GB 8624-2012 standard, respectively. The NUDF had excellent mechanical properties, environmentally friendly performance, and good flame retardant properties. The results of cone calorimetry showed that with the increase of flame retardant addition, the total heat release of combustion process decreased, the total smoke production increased, the yield of CO increased and the yield of CO₂ decreased.

Key words: flame retardant, ultra-low density fiberboard, total heat release

中图分类号:

TQ35

詹满军,陈志林,储富祥. 复合型阻燃剂对无醛超低密度纤维板性能的影响[J]. 林产化学与工业, 2019, 39(3): 87-93.

Manjun ZHAN,Zhilin CHEN,Fuxiang CHU. Effect of Hybrid Flame Retardant on Properties of Formaldehyde-free Ultra-low Density Fiberboard[J]. Chemistry and Industry of Forest Products, 2019, 39(3): 87-93.

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编号 No.	阻燃剂添加量/% addition amount of flame retardant	密度/(g·cm^-3) density	内结合强度/MPa internal bonding strength	24 h吸水厚度膨胀率/% 24 h TS	静曲强度/MPa modulus of rupture
1	0	0.520	0.69	7.8	15.8
2	2	0.523	0.60	7.9	15.4
3	3	0.522	0.59	7.8	15.4
4	4	0.518	0.55	7.8	15.1
5	5	0.529	0.40	8.0	14.8
6	6	0.525	0.41	8.1	14.5
7	7	0.519	0.40	8.0	14.3
8	8	0.521	0.38	8.2	13.8

编号 No.	阻燃剂添加量/% addition amount of flame retardant	是否被引燃 whether is ignited	火焰尖端是否达到距点火点150 mm处 whether from the ignition point to the tip of the flame 150 mm	燃烧长度/mm combustion length
1	0	是yes	是yes	115
2	2	是yes	是yes	95
3	3	是yes	是yes	90
4	4	是yes	否no	88
5	5	是yes	否no	85
6	6	否no	否no	80
7	7	否no	否no	78
8	8	否no	否no	75

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复合型阻燃剂对无醛超低密度纤维板性能的影响

Effect of Hybrid Flame Retardant on Properties of Formaldehyde-free Ultra-low Density Fiberboard

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