CAJ | 학술논문

首先采用复合增塑剂(由甘油、甲酰胺和尿素组成)对天然淀粉进行改性,并在高温高剪切作用下制得热塑性淀粉(TPS);然后以乙烯,酷酸乙烯共聚物(EVA)为主要原料,并辅以聚合松香、聚乙烯蜡、抗氧剂和填料等制备出新型低成本TPS/EVA热熔胶.通过多种分析手段对产品的晶体结构、软化点、剪切强度、熔体指数(MI)及各组分间相容性等进行了研究,并对产品的性能、成本和工艺进行了分析.结果表明:当w(EVA)=30%(相对于热熔胶而言)、w(TPS)=20%(相对于热熔胶而言)时,TPS/EVA热熔胶的成本低于传统热熔胶,并且均匀度较好、粘接强度超过2.0 MPa,可广泛用于纸盒、包装材料、一次性制品加工和无纺产品成型等领域.
수선채용복합증소제(유감유、갑선알화뇨소조성)대천연정분진행개성,병재고온고전절작용하제득열소성정분(TPS);연후이을희,혹산을희공취물(EVA)위주요원료,병보이취합송향、취을희사、항양제화전료등제비출신형저성본TPS/EVA열용효.통과다충분석수단대산품적정체결구、연화점、전절강도、용체지수(MI)급각조분간상용성등진행료연구,병대산품적성능、성본화공예진행료분석.결과표명:당w(EVA)=30%(상대우열용효이언)、w(TPS)=20%(상대우열용효이언)시,TPS/EVA열용효적성본저우전통열용효,병차균균도교호、점접강도초과2.0 MPa,가엄범용우지합、포장재료、일차성제품가공화무방산품성형등영역.
The natural starch was modified by composite plasticizer(namely glycerol,methanamide and urea), then the thermal plastic starch(TPS) was prepared by action of high temperature and high shearing strength,so a novel TPS/EVA hot melt adhesive with low cost was produced by EVA as main material and auxiliary materials such as polymerized rosin,polyethylene wax,antioxidants,fillers and so on. The crystallization structure,softening point, shear strength, melt index (MI) and compatibility among components of the product were studied by various analysis method,and the performances,cost and technology of product were analysed. The results showed that the cost of TPS/EVA hot melt adhesive was lower than of traditional hot melt adhesive when mass fractions of EVA and TPS were 30% and 20% respectively in hot melt adhesive. The TPS/EVA hot melt adhesive had better homoge neous,its bonding strength was above 2.0 MPa,and could be widely used in cartons,packaging materials,machining for one-time products,moulding for non-woven products and other fields.