半芳香聚酰胺合成方法多样，其中低温溶液聚合法条件温和，易于控制。利用生物基戊二胺、对苯二甲酰氯以及己二酰氯，经低温溶液聚合和固相聚合制备系列组分的聚对苯二甲酰戊二胺-聚己二酰戊二胺（PA5T-56），以聚合产物相对黏度为考察对象，讨论固相聚合温度和时间对固相聚合的影响，并对PA5T-56的化学结构与热性能进行分析。结果表明：随着固相聚合过程中固相聚合温度和时间的增加，PA5T-56/L固相聚合产物的相对黏度得到提高，但进一步增加至240 ℃、8 h以上时，其相对黏度降低；低温溶液聚合所获不同组分PA5T-56/L的初始分解温度和最大分解速率温度分别高于389.8、463.5 ℃，当对苯二甲酰戊二胺链段（5T）摩尔分数高于70%时固相聚合可使其的熔融温度及结晶温度提高近20 ℃，分别高于290.1、240.3 ℃。

There are numerous methods for synthesizing semi-aromatic polyamides, among which the low-temperature solution polymerization method provides mild conditions and is easy to control. Polyp-phenyl-glutarylenediamide (PA5T-56) with a series of component ratios were prepared using bio-based pentanediamine, adipyl chloride and terephthalyl chloride by low temperature solution polymerization and solid phase polymerization. The effects of solid-phase polymerization temperature and time on solid-phase polymerization are discussed in terms of the relative viscosities of the polymerization products.Then the chemical structure and thermal properties of PA5T-56/L were studied. The results showed that with the increase of solid phase polymerization temperature and time during solid phase polymerization, the relative viscosity of low temperature polymerization products of PA5T-56/L could be increased, but when the temperature exceeds 240 ℃ and the reaction time exceeded 8 h, the relative viscosity decreased. The initial decomposition temperature and temperature of maximum decomposition rate of series of components PA5T-56/L obtained by low temperature solution polymerization were higher than 389.8,463.5 ℃. The solid-phase polymerization could increase its melting temperature and crystallization temperature by nearly 20 ℃ when the mole fraction of terephthaloyl pentamethylene diamine segment (5T) was higher than 70%, which was higher than 290.1, 240.3 ℃, respectively.