Caroline Rodrigues Pereira, Richard Eduard Mölleken, Felipe Hermenegildo de Souza, Giovanni Schiavinatto Capellari, Salvador Claro Neto, Elaine Cristina Azevedo
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引用次数: 4
摘要
用于粘合木板的粘合剂是石油基的，含有挥发性有机化合物(VOCs)。当人体吸入有害物质时，会引起不同的问题，如癌症。作为这些粘合剂的替代品，可以使用从蓖麻油(PU)中提取的聚氨酯，这是一种可再生资源，可用于结构应用，室内和室外环境。它具有耐候性和良好的力学性能。本文的目的是评价PU粘合中密度纤维板粘接接头的力学性能。生产的中密度纤维板(MDF)生样2 × 2胶合，0.05?1?cm2的黏合剂G。其中PVA胶6个，接触胶6个，PU胶6个。72年之后呢?h根据ASTM D 3983-93和ASTM D897-95A标准，采用剪切粘结强度力学分析技术。结果表明:PU的剪切平均阻力为12.67±2.26?，而PVA胶粘剂为2.55±0.19?接触胶为3.26±0.63 MPa。与PVA和接触胶粘剂相比，蓖麻油衍生的聚氨酯具有优越的抗剪切平均性能，因此可以用于粘合中密度纤维板。
Evaluation of MDF bonding with polyurethane of castor oil
Adhesives used to bond the wood panels are petroleum-based and has volatile organic compound, VOCs. Harmful substance when inhaled by human being and can cause different problems, such as cancer. As an alternative to replace these adhesives is to use the polyurethane derived from castor oil (PU), a renewable resource that can be used to structural applications, indoor and outdoor environments. It is weather resistant and has good mechanics properties. The aim of this paper is to evaluate the mechanical resistance of glued joint with PU biding MDF panels. It was produced raw MDF samples glued two by two with 0.05?g of adhesive in 1?cm2. Where 6 samples were used with PVA adhesive, 6 with contact adhesive and 6 with PU. After 72?h it was applied a mechanical analysis technique of shear bond strength, according to the standards ASTM D 3983-93 and ASTM D897-95A. The results shows the shear average resistance of PU was 12.67?±?2.26?MPa, whereas for the PVA adhesive was 2.55?±?0.19?MPa and the contact adhesive was 3.26?±?0.63?MPa. It is conclusive the polyurethane derived from castor oil can be used to bind MDF panels, due to its superior shear average resistance compared to PVA and contact adhesives.
期刊介绍：
Applied Adhesion Science focuses on practical applications of adhesives, with special emphasis in fields such as oil industry, aerospace and biomedicine. Topics related to the phenomena of adhesion and the application of adhesive materials are welcome, especially in biomedical areas such as adhesive dentistry. Both theoretical and experimental works are considered for publication. Applied Adhesion Science is a peer-reviewed open access journal published under the SpringerOpen brand. The journal''s open access policy offers a fast publication workflow whilst maintaining rigorous peer review process.
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