CAJ | 학술논문

以热塑性淀粉(TPS)为成炭剂与聚磷酸铵(APP)、可膨胀石墨(EG)复配组成膨胀型阻燃剂，通过熔融密炼、开炼塑化、硫化发泡制备了热塑性淀粉/乙烯-醋酸乙烯酯共聚物(TPS/EVA)泡沫复合材料，探讨了TPS用量对泡沫复合材料阻燃性能、力学性能的影响。结果表明，TPS的加入显著提高了TPS/EVA泡沫复合材料阻燃性能，可起到良好的成炭作用；TPS/EVA泡沫复合材料的拉伸强度、断裂伸长率以及撕裂强度随着TPS用量的增加呈现先增大后减小的趋势，相对密度则是小幅度上升。当TPS用量为6%时，TPS/EVA泡沫复合材料综合性能最好，其LOI可达26.5%且UL-94为V-0级，拉伸强度、断裂伸长率、撕裂强度以及相对密度可达2.395 MPa、177.48%、10.59 N·mm?1、0.21452。
이열소성정분(TPS)위성탄제여취린산안(APP)、가팽창석묵(EG)복배조성팽창형조연제，통과용융밀련、개련소화、류화발포제비료열소성정분/을희-작산을희지공취물(TPS/EVA)포말복합재료，탐토료TPS용량대포말복합재료조연성능、역학성능적영향。결과표명，TPS적가입현저제고료TPS/EVA포말복합재료조연성능，가기도량호적성탄작용；TPS/EVA포말복합재료적랍신강도、단렬신장솔이급시렬강도수착TPS용량적증가정현선증대후감소적추세，상대밀도칙시소폭도상승。당TPS용량위6%시，TPS/EVA포말복합재료종합성능최호，기LOI가체26.5%차UL-94위V-0급，랍신강도、단렬신장솔、시렬강도이급상대밀도가체2.395 MPa、177.48%、10.59 N·mm?1、0.21452。
Intumescent flame retardant thermoplastic starch (TPS) as char forming agent, ammonium polyphosphate (APP) and expandable graphite (EG) were used to prepare thermoplastic starch/ethylene-vinyl acetate copolymer (TPS/EVA) foam composites by melt mixing, mill plasticizing and sulfuration foaming. The effect of thermoplastic starch content on the flame retardant, mechanical and processing properties of TPS/EVA foam composites was investigated. With the introduction of char forming agent TPS, flame retardancy and charring of TPS/EVA foam composites could be significantly improved. With increasing TPS content, tensile strength, elongation at break and tearing strength of TPS/EVA foam composites showed a downward trend after firstly rising and specific gravity showed a modest rise. The TPS/EVA foam composites had best comprehensive properties at the loading of 6%TPS, i.e. LOI 26.5%, UL-94 V-0 rating, tensile strength, elongation at break, tearing strength and specific gravity 2.395 MPa, 177.48%, 10.59 N·mm?1, 0.21452, respectively.