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尼龙66/1010/1212热熔胶的研制 总被引:1,自引:0,他引:1
采用尼龙66/1010/1212共聚工艺,从配方上改进了单体残留问题,同时,根据单体含量-熔点曲线,探索了尼龙66/1010/1212的熔点与配比关系的实验方法。 相似文献
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The reactive polyurethane hot melt adhesive (HMPUR) was synthesized via bulk polymerization of poly(butyleneglycol adipate) (PBA), poly(ethylene orthophthalate) (PEO), poly(tetrahydrofurandiol) (PTMEG), 4,4′-methylene diphenyl diisocyanate (MDI) and pentaerythritol diacrylate (PEDA). Its thermal degradation was studied by thermogravimetry (TG) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). In helium atmosphere, the sample was pyrolyzed at three characteristic temperatures of 280, 450 and 600 °C according to the results of TG analysis. More than 20 characteristic volatile pyrolytic products were identified by on-line MS. The pyrolysis reaction types of HMPUR were proposed and verified through the analysis of pyrolytic products. 相似文献
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Synthesis and properties of polyamide/LLDPE composites with compatibilizer used as hot melt adhesive
In this work, a new polyamide (PA155) was synthesized from higher purity dimer acid, sebacic acid, ethylenediamine, and piperazine, and the ternary blends were prepared by blending PA155 with LLDPE in the presence of the compatibilizer, maleic anhydride grafted linear low-density polyethylene (LLDPE-g-MAH). The weight ratio of PA155 to LLDPE of the samples was kept constant at 80/20 and the amount of LLDPE-g-MAH was varied at 0, 3, 6, 9, and 12 wt% over the total weight of the blend respectively. The scanning electron microscope and mechanical properties tests showed that the compatibility and the mechanical properties were improved with the increase in LLDPE-g-MAH content, and the blend containing 9.0 wt% LLDPE-g-MAH exhibits an optimal miscibility behavior and mechanical properties. The hot melt adhesives which were prepared from the ternary blends were assessed by 180°peel tests of Al/adhesive/polypropylene stack. The peeling strength for the sample containing 9.0 wt% compatibilizer (82.5 N/2.5 cm) is much more than that of the samples without compatibilizer (<20 N/2.5 cm). 相似文献
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书籍装订用单组分聚氨酯热熔胶的研究 总被引:1,自引:2,他引:1
介绍了一种制备书籍装订用聚氨酯热熔胶粘剂的方法。考察了合成聚氨酯预聚物的最佳工艺条件及原料配比;然后进行配方复配。结果表明:最佳配方所得产品性能完全达到国家对书本装订高速胶的要求,并显示出优良的弹性和韧性。该产品生产工艺简单,成本低廉,可操作性强。用于书籍装订生产既可弥补EVA型胶的缺陷又不会提高生产成本,可为生产和使用厂家带来可观的经济效益。 相似文献
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介绍了近年来聚酯热熔胶的流动性、结晶速度、耐水解性、热稳定性、阻燃性、透明性等方面研究进展,环保型和功能型聚酯热熔胶将是未来发展的主要方向。 相似文献
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一种新的热熔型亚胺胶粘剂的研制 总被引:2,自引:0,他引:2
介绍一种以热塑性聚醚酰亚胺 (PEI)来改性双马来酰亚胺 (BMI)树脂 ,制成无溶剂的热熔型胶粘剂 ,其室温拉伸剪切强度≥ 11MPa ,2 2 0℃时≥ 14MPa,是一种新型的耐热胶粘剂 相似文献
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以聚己内酯(PCL)为主要原料制备了自粘型医用矫形绷带用热熔胶,确定了填料和稀释剂的用量,同时对最佳涂布量做了选择。利用该热熔胶制得的绷带具有反复多次使用的特点。 相似文献
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自制AS 615是一种新开发的特种聚酯型HMA(热熔胶)胶膜,具有良好的综合性能;以此作为电子产品塑料外壳/金属部件的胶粘剂,并对其应用性能进行了系统研究。结果表明:AS 615对ABS(丙烯腈-丁二烯-苯乙烯共聚物)、PC(聚碳酸酯)等极性塑料和金属具有良好的粘接性能,相应胶接件稳定后的剥离强度超过65 N/25 mm,其最佳粘接复合温度范围为120~160℃;AS 615具有良好的耐水性、耐老化性和粘接持久性,可取代国外同类产品用于电子行业中极性聚合物与金属之间的粘接。 相似文献
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