Biodegradable lightweight construction boards based on tannin/hexamine bonded hemp shaves
Biodegradable lightweight construction boards based on tannin/hexamine bonded hemp shaves
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DOI：
10.1007/s00107-002-0306-0
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发表时间：
2002-08-01
期刊：
影响因子：
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通讯作者：
Grohe, B
中科院分区：
文献类型：
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作者：
Theis, M;Grohe, B
室内等级大麻刨花轻质建筑板约0.260 g/cm(3)，干I.B.强度高达0.34兆帕，甲醛释放量在排放等级E1内，并通过将大麻屑与硼酸盐改性含羞草单宁粘合剂混合并在70℃下以6 S/mm的速度将质量块压至单层板上，制造出正常易燃且不燃烧滴漏的证书(DIN4102-B2)。不同的干燥工艺表明，为了获得令人满意的强度和足够的尺寸稳定性，需要在接近100℃的温度下进行快速干燥，同时还需要在浸泡过程中降低硼的浸出率。对于干燥的环境，抗真菌侵袭的能力足以使板材用于内部应用。
Interior grade hemp shave lightweight construction boards of about 0.260 g/cm(3), with a dry I.B. strength of up to 0.34 MPa, a formaldehyde release well within the emission class E1 and certificate as normal flammable and not burning dripped off (DIN 4102-B2) were fabricated by mixing hemp shaves with a borate-modified mimosa tannin-hexamine binder and press the masses as fast as 6 s/mm thickness at 70degreesC to one-layer boards. Different drying processes indicate that fast drying at similar to100degreesC is needed both for satisfactory strengths and for a sufficient dimension stability performance of soaked samples, but, as well for a lower boron leaching during soaking. For dry environments the resistance to fungal attack is sufficient enough to have boards for interior application.