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首页> 美国卫生研究院文献>Polymers >Potential of Brewer’s Spent Grain as a Potential Replacement of Wood in pMDI UF or MUF Bonded Particleboard
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Potential of Brewer’s Spent Grain as a Potential Replacement of Wood in pMDI UF or MUF Bonded Particleboard

机译：酿酒师花了谷物的潜力作为PMDIUF或MUF粘合刨花板的潜在替代木材

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摘要

Brewer’s spent grain (BSG) is the richest by-product (85%) of the beer-brewing industry, that can be upcycled in a plentiful of applications, from animal feed, bioethanol production or for removal of heavy metals from wastewater. The aim of this research is to investigate the mechanical, physical and structural properties of particleboard manufactured with a mixture of wood particles and BSG gradually added/replacement in 10%, 30% and 50%, glued with polymeric diisocyanate (pMDI), urea-formaldehyde (UF) and melamine urea-formaldehyde (MUF) adhesives. The density, internal bond, modulus of rupture, modulus of elasticity, screw withdrawal resistance, thickness swelling and water absorption were tested. Furthermore, scanning electron microscopy anaylsis was carried out to analyze the structure of the panels after the internal bond test. Overall, it was shown that the adding of BSG decreases the mechanical performance of particleboard, due to reduction of the bonding between wood and BSG particles. This decrease has been associated with the structural differences proven by SEM inspection. Interaction of particles with the adhesive is different for boards containing BSG compared to those made from wood. Nevertheless, decrease in the mechanical properties was not critical for particleboards produced with 10% BSG which could be potentially classified as a P2 type, this means application in non-load-bearing panel for interior use in dry conditions, with high dimensional stability and stiffness.
机译：Brewer的谷物（BSG）是啤酒酿造行业最富有的副产品（85％），可在丰富的应用中，来自动物饲料，生物乙醇生产或从废水中除去重金属。本研究的目的是研究用木颗粒和BSG的混合物制造的刨花板的机械，物理和结构性能逐渐加入/更换10％，30％和50％，用聚合物二异氰酸酯（PMDI），尿素 - 甲醛（UF）和三聚氰胺尿素 - 甲醛（MUF）粘合剂。测试了密度，内键，破裂模量，弹性模量，螺杆取出阻力，厚度溶胀和吸水性。此外，进行扫描电子显微镜AnayLSIS以在内键测试之后分析面板的结构。总的来说，结果表明，由于木材和BSG颗粒之间的粘合，增加BSG降低了刨花板的机械性能。这种减少与SEM检查证明的结构差异有关。与由木材制成的那些相比，颗粒与粘合剂的相互作用不同于含有BSG的板。然而，机械性能的降低对用10％BSG产生的刨花板不关键，该刨花板可能被潜在地归类为P2型，这意味着在干燥条件下的内部使用的非承载板上应用，具有高尺寸稳定性和刚度。

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