Development of High Accuracy and High Quality Glass-fiber Reinforced Plastic Product by Hybrid Ceramics Mold

近年来，对汽车、家用电器等制造产品的零部件在制造阶段对高精度、高质量、轻量化、降低制造成本和能源等提出了强烈的要求。本研究利用混合陶瓷模具对玻璃纤维增强材料(GFRP)进行了高精度注射成型，并对采用陶瓷模具和传统金属模具的注射制品的表面性能进行了对比研究，结果表明，由于陶瓷模具的绝热作用，流动性得到了极大的改善。结果表明：1)用陶瓷模代替金属模(表面粗糙度Rz：40μm→0.4μm)，可大大改善制品的表面性能。2)采用陶瓷模，可获得高精度、高质量、高强度的薄壁玻璃钢制品。3)成型后，无需机械加工、喷漆和表面处理。4)由于模具寿命长，生产稳定。

Recently, the high accuracy, the high quality, the lightening, and the reduction of the manufacturing cost and the energy, etc. are strongly requested at the manufacturing stage to parts used for the manufacturing products such as the car and home electronics applianceIn this research, a high accuracy injection molding of the glass fiber reinforcing material (GFRP) was executed by using the hybrid ceramics molding die, and it made comparative study about the surface properties of injection molding products which used the ceramics mold and conventional metal mold.As a result, by using the ceramics mold, the fluidity is great improved due to the adiabatic effect of ceramics die. The results obtained are as follows.1) A great improvement of the surface properties of the products was achieved by replacing the metal mold with ceramics mold (Surface roughness Rz : 40μm→0.4μm).2) By using the ceramics mold, FRP products with the high accuracy, the high quality and thin wall with high strength are obtained.3) After molding, the machining, the painting and surface treatment are unnecessary.4) Because the mold life is long, steady production can be done.