仿PF2A2-141新型苯酚-淀粉模塑料的研制  

Development of New Phenol-starch Moulding Material in Imitation of PF2A2-141

作　　者：陈国民[1] 陈朝辉[2] 简科[2] 

机构地区：[1]湖南城市学院资产与校园管理处,湖南益阳413000 [2]国防科技大学新型陶瓷纤维及其复合材料重点实验室,湖南长沙410073

出　　处：《湖南城市学院学报（自然科学版）》2004年第1期53-56,共4页Journal of Hunan City University:Natural Science

基　　金：湖南省教育厅科研基金(02C145)

摘　　要：研制了仿PF2A2-141新型苯酚-淀粉模塑料。产品典型的原料配方是m(苯酚-淀粉树脂):m(六亚甲基四胺):m(木粉):m(碳酸钙):m(氧化镁):m(硬脂酸锌):m(硬脂酸):m(油溶苯胺黑):m(群青)40.5:6.9:45.0:4.8:0.8:0.6:0.4:0.5:0.5;制备工艺参数是混合时间≥60min,工作辊温度100-110℃,空转辊温度140～150℃。辊距1.5～2.5mm,热炼时间4～5min,拼批时间≥45 min;模塑工艺参数是预热温度100～110℃,预热时间10～15min,模塑压力≥25MPa,模塑温度175～180℃,模塑时间0.8～1.0 min·mm^(-1),排气≥3次。产品质量用模塑料片状料光亮外观和模塑料拉西格流动性80～120mm控制。产品性能达到酚醛模塑料(PF2A2)国家标准,尤其是热变形温度(171℃)、绝缘电阻(3.0×10^(12)Ω)、介电强度(5.9MV·m^(-1))、介质损耗因数(0.03)大大超过该国家标准;耐炽热(15s)优良,而且在潮湿环境中有优良的电性能。与PF2A2-141相比,产品原料消耗成本下降21.4％。A new phenol-starch moulding material in imitation of PF2A2-141 was developed. Typical raw materials formulation of the product is m(phenol-starch resin): m(hexamethylene-tetramine): m(wood flour): m(calcium carbonate): m(magnesium oxide): m(zinc stearate): m(stearic acid): m(Oil Aniline Black): m(ultramarine)=40.5: 6.9: 45.0: 4.8: 0.8: 0.6: 0.4: 0.5: 0.5; preparative technological parameters are mixing time ≥60min, temperature of the working roller 100～110℃, temperature of the idle roller 140～150℃, distance of the two rollers 1.5～2.5 mm, warm-up time 4～5 min, combining batch time≥45 min; moulding technological parameters are preheating temperature 100～110℃, preheating time 10～15 min, moulding pressure ≥25 MPa, moulding temperature 175～180℃, moulding time 0.8～1.0 min·mm^(-1), exhaust ≥3 times. Quality of the product is controlled by bright outward appearance of sheet material of moulding material and Raschig flow property 80～120 mm of moulding material. The properties of the product come up to the national standard of phenolic moulding material (PF2A2), specially its thermal distortion temperature (171℃), insulation resistance (3.0×10^(12)Ω), dielectric strength(5.9 MV.m^(-1)), dielectric loss tangent (0.03) surpass greatly the national standard; the red heat resistance (15 s) is excellent, and it shows excellent electric properties in moist environment. By comparison with PF2A2-141, the cost of raw materials consumption of the product is reduced by 21.4%.

关 键 词：苯酚一淀粉模塑料 配方 碳酸钙 氧化镁 绝缘电阻 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]