新型耐寒增塑剂己二酸二(2-丙基庚)酯的应用性能评价  

Evaluation of the Application Performance of a New Cold-Resistant Plasticizer Di(2-propylheptyl)Adipate

作　　者：刘延华 陈利贞 孙正鹏 阮振敏 Liu Yanhua;Chen Lizhen;Sun Zhengpeng;Ruan Zhenmin(Shandong Langhui Petrochemical Co.,Ltd.,Zibo,Shandong 255436,China)

机构地区：[1]山东朗晖石油化学股份有限公司,山东淄博255436

出　　处：《塑料助剂》2024年第4期1-5,13,共6页Plastics Additives

摘　　要：以2-丙基庚醇和己二酸为原料合成了己二酸二(2-丙基庚)酯增塑剂,对比了己二酸二辛酯(DOA)、癸二酸二辛酯(DOS)、己二酸二(2-丙基庚)酯(LH-80)三种增塑剂的热失重性能和PVC吸收速率,测定了三种增塑剂应用于PVC 70℃电缆护套料和保鲜膜时的主要性能指标。结果表明,应用于电缆料时,DOA、DOS、LH-80增塑PVC后材料的体积电阻率分别为1.73×10^(9)Ω·m、2.01×10^(9)Ω·m、2.10×10^(9)Ω·m;三者增塑PVC后材料的老化后力学性能变化率和热失重指标都达到了GB/T 8815—2008 70℃电缆护套料的要求。应用于PVC保鲜膜时,DOA、DOS、LH-80增塑PVC后材料的拉伸强度19.3 MPa、19.9 MPa、21.4 MPa,LH-80增塑后的材料抗拉强度最好;低温脆化温度分别为-53℃、-55℃、-58℃,LH-80的耐低温性能介于两者之间;光学性能方面,LH-80透光率和雾度介于DOS和DOA之间,黄指数与DOS和DOA相当。A plasticizer of di(2-propylheptanyl)adipate was synthesized using 2-propylheptanol and adipic acid as raw materials.The thermal weight loss performance and PVC absorption rate of three plasticizers,dioctyl adipate(DOA),dioctyl sebacate(DOS),and di(2-propylheptyl)adipate(LH-80),were compared.The main performance indicators of three plasticizers applied to PVC 70℃cable sheath material and cling film were determined.The results showed that when applied to cable materials,the volume resistivity of DOA,DOS,and LH-80 plasticized PVC materials were 1.73×10^(9)Ω·m,2.01×10^(9)Ω·m,and 2.10×10^(9)Ω·m,respectively.The mechanical property change rate and thermal weight loss index of the three plasticized PVC materials after aging meet the requirements of GB/T 8815—200870℃cable sheath materials.When applied to PVC cling film,the tensile strengths of DOA,DOS,and LH-80 plasticized PVC materials were 19.3 MPa,19.9 MPa,and 21.4 MPa,with LH-80 having the best tensile strength.The low-temperature embrittlement temperatures were-53℃,-55℃,and-58℃,respectively,and the low-temperature resistance of LH-80 was between the other two.In terms of optical performance,the transmittance and haze of LH-80 are between DOS and DOA,and the yellow index is comparable to DOS and DOA.

关 键 词：耐寒增塑剂 应用性能 己二酸二(2-丙基庚)酯 己二酸二辛酯 癸二酸二辛酯 

分 类 号：TQ414[化学工程]