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REGENERATIVE AND BIO-BASED MATERIALS FOR SHEET MOLDING COMPOUNDS(SMC)

Florian GortnerPeter Mitschang

Florian Gortner, Institut für VerbundwerkstoffePeter Mitschang, Institut für Verbundwerkstoffe

摘要:In Europe, Sheet Molding Compound(SMC) has high market relevance in the field of glass fiber reinforced polymer composites(GFRPC) with a market share of almost 20% in terms of mass.SMC shows good mechanical properties that are comparable to aluminum while SMC-material is processed to net-shape components in compression molding process.Class-A surface quality and short cycle times of three minutes and less can be achieved.A conventional SMC semi-finished product mainly consists of a thermoset resin-paste, a variety of different additives, reinforcement fibers with a length of 24 to 48 millimetres, and different filler materials.The filler materials can be divided into nonfunctional and functional fillers, e.g.flame retardants.Calcium carbonate, with a density of about 2.7 g/cm3, is a commonly used non-functional filler material.Within this paper, the commonly used filler materials were replaced by regenerative and bio-based filler materials with a density of about 1.0 g/cm3.As bio-based fillers, different materials such as sunflower hulls, rapeseed meal and wood powder were used.By replacing the conventional fillers with bio-based fillers, same mechanical properties regarding tensile strength, Young’s modulus and Charpy resistance could be achieved while reducing the density of the resin paste up to 18%.The partly bio-based semi-finished products showed same viscosity, storage behaviour and processability as conventional SMC semi-finished products.
会议名称:

第二十一届国际复合材料大会

会议时间:

2017-08-20

会议地点:

中国陕西西安

  • 专辑:

    工程科技Ⅰ辑

  • 专题:

    材料科学

  • 分类号:

    TB33

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