【摘要】 合成了铸造用酚醛树脂,以此作为粘结剂,制备了树脂覆膜砂,并对其各项性能进行检测,检测结果符合ZBG39005—89标准,探讨了影响酚醛树脂及树脂覆膜砂性能的各项因素。更多还原

【Abstract】 the phenol-formaldehyde resin for casting was Synthesized.The resin coated sand was prepared by this phenol -formaldehyde adhesive,The properties of the resin coated sand were determined,it’s results reached the standard of ZBG39005 -89.The factos of influencing the properties of the rosin and the resin coated sand were also discussed.更多还原