摘要
为便于用丝瓜络制作沙发坐垫的垫芯,采用热压法将丝瓜络段进行扁平化处理,获取不同密度、厚度的扁平化丝瓜络段单体,针对络段单体进行静态压缩力学特性的研究,为丝瓜络扁平化工艺处理后应用于沙发坐垫垫芯提供力学研究基础。结果发现,热压厚度为10 mm的高密度丝瓜络,以及热压厚度为10,20 mm的低密度丝瓜络载荷位移曲线持续塑性变形,材料基本无弹性,不适用于沙发坐垫垫芯。高密度丝瓜络弹性模量和屈服强度最高,不易变形,较海绵而言存在刚度过大、柔性过差的问题;热压厚度20 mm的高密度丝瓜络刚度最大、柔性最差,不适用于沙发坐垫垫芯。而低密度丝瓜络各项指标与海绵相近,弹性变形范围更大,其中热压厚度为40 mm的低密度丝瓜络和S50海绵最为相似。
In order to facilitate the making of cushion core of sofa seat with loofah,the loofah section was flattened by the hot pressing method,and the flat loofah section monomers of different densities and thicknesses were obtained. The static compression mechanical properties of the loofah monomer was analyzed with an aim to provide a mechanical research basis for the application of the loofah flattening process to the sofa seat cushion core. The results showed that the high-density loofah with a hot-pressed thickness of10 mm and the low-density loofah with a hot-pressed thickness of 10 mm and 20 mm continued to plastically deform,and the materials were basically inelastic,which were not suitable for sofa seat cushion cores. High-density loofah has the highest elastic modulus and yield strength,making it is very difficult to deform. The stiffness is too large compared to sponge,and there are problems caused by excessive stiffness and poor flexibility. The high-density loofah with a hot-pressed thickness of 20 mm has the highest stiffness and worst flexibility,which resulted in very unsuitable for sofa seat upholstery. The indicators of low-density loofah are similar to those of sponge,and the elastic deformation range is larger. Among them,the low-density loofah with a hot-pressed thickness of 40 mm is the most similar to S50 sponge.
作者
陈碧琪
关惠元
CHEN Biqi;GUAN Huiyuan(College of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037,China)
出处
《家具》
2022年第4期7-14,共8页
Furniture
基金
江苏高校优势学科建设工程资助项目
江苏省林业资源高效加工利用协同创新中心资助项目。
关键词
丝瓜络
力学性能
静态压缩
弹性模量
屈服强度
loofah
mechanical properties
static compression
elastic modulus
yield strength
