| One-component moisture-curing polyurethane hot melt adhesive has excellent physical, chemical and mechanical properties. As a solid content 100% and non-toxic to humans, the hot melt adhesive is a line with "environmental protection, health and safety". The traditional one-component moisture-curing polyurethane hot melt adhesives usually uses adipic acid as the main department of polyols with strong crystallization ability, quick physical curing speed, a short open time and poor flexibility. With polyether polyurethane as the main body the hot melt adhesives has good flexibility, poor adhesive peel strength and heat resistance.In this paper , the non-crystalline polyester polyol is synthesized with TPA, OPA, AA and EG as the comonomer. Best polymerization process of non-crystalline polyester polyols is confirmed. With non-crystalline polyester polyols as the main reaction a series of hot melt adhesive are prepared different from the traditional using hot melt adhesive adipic acid as the main polyol polyurethane. using a variety of experimental methods to research the structure and properties of the samples: determining polyol of hydroxyl value, molecular weight, composition, chain structure and confirming the the best synthesis technology via hydroxyl value analysis and nuclear magnetic resonance spectroscopy (NMR); Through testing the basic properties of hot melt adhesive to understand basic mechanics performance of the samples; Studying curing process and the hydrolysis process via infrared spectroscopy (FTIR); Melting and crystallization characteristics of different polyols as the main body of the hot melt adhesive was studied using thermal analysis (DSC); Heat resistance and flame resistance are studied via weight loss France (TG) .The results show that:1 . In this paper, we research synthesis and formulation design. The various factors on the impact of the final product about polymerization process are discussed in detail;2 . The basic mechanical properties of hot melt adhesive tests show that hot melt adhesives using the non-crystalline polyester polyols as the main body can increase opening hours at the same time maintaining a high ultimate strength and outstanding flexibility performance;3. From the curing process and the hydrolysis process of IR spectra change of FTIR shows the curing rate of polyurethane hot melt adhesive using the non-crystalline polyester polyols as the main body has not been reduced. Three types of polyurethane almost at the same time reach the maximum value of peel strength by studying the curing process of -NCO groups in the infrared spectra indicating the non-crystalline main body almost no effect on the chemical curing; The hot melt adhesive using polyether as the main body has excellent water resistance by the infrared spectra changes of FTIR and the peel strength tests of hydrolysis process. The non-crystalline polyurethane has a better water resistance than the crystalline polyester due to the introduction of a large number of benzene ring groups and the volume effect of inhibiting the hydrolysis of ester bonds weak;4.The DSC of three types of polyurethane hot melt adhesive proves curing characteristics of that crystalline polyester - the crystallization ability, physical cure faster and higher initial strength. the non-crystalline polyester polyols has no obvious melting and crystallization peaks indicating its heat relatively flat during the curing time which indirectly explains the reasons for its long open time;5. Thermal degradation kinetics analysis of PU hot-melt adhesives are done by TG and DTG. Figure can be got between In (B/T~2max) and the 1000/T by Kssinger way. We find that the introduction of the non-crystalline polyester polyurethane which has the highest value of activation energy E because of the introduction of benzene ring structure which proves that the non-crystalline polyester as main body containing the benzene ring not only has a long open time, heat resistance and flame area also has advantages.
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