线型低密度聚乙烯高速滴灌带专用料的中试开发.pdf

石油化
?320
PETROCHEMICAL TECHNOLOGY
2013年第42卷第3期
线型低密度聚乙烯高速滴灌带专用料的
中试开发
邱丽萍,李颖超,杨国兴,郭峰,李瑞,赵兴龙
(1.中国石油大庆化工研究中心,黑龙江大庆163714;2.中国石油华北化『销售公司,北京10006
摘要」通过对市售滴灌带专用料树脂的分析,确定了滴灌带专用料树脂的技术指标。利用50kgh全密度聚乙烯中试装置生
产了线型低密度聚乙烯( LLDPE)滴灌带专用料树脂,再通过共混制得了滴灌带专用料。为适应高速加工的要求,滴灌带专
料的熔体流动指数(I0min)为0.3~0.6g、密度为0.928~0.940gcm较适宜。利用GPC、"CNMR、流变和熔体强度测试等
方法对滴灌带专用料进行了表征。表征结果显示,滴灌带专用料DGD-3的力学性能与市售 Sabic专用料相当,但加工性能优于
Sabic专用料。采用DGD-3专用料制得的滴灌带产品外观性能好、拉伸形变小于5.0%、爆破压力大于0.3MPa、微孔水流量为
3.3Lh,达到国家标准。
关键词]线型低密度聚乙烯;共混;滴灌带专用料
文章编号]1000-8144(2013)03-0320-05
中图分类号1TQ325.12
文献标志码]A
Pillot Development of Linear Low Density Polyethylene High Speed
Emitting-pipe Special Material
giu Liping, Li Yingchao, Yang Guoxing, Guo Feng, Li Rui, Zhao Xinglong
(1. CNPC Daqing Chemical Research Center, Daqing Heilongjiang 163714, China
2. CNPC Petrochemical Northchina Chemical Marketing Company, Beijing 100086, China
I Abstract The technical specifications of emitting-pipe special materials were determined by
analyzing a commercial emitting-pipe special material. Linear low density polyethylene(LLDPE
which was produced in a 50 kg/h gas-phase full-density polyethylene pilot plant, was blended
to prepare emitting-pipe special material. To meet the requirement of high-speed processing, the
optimum melt flow rate(10 min )and density of emitting-pipe special material were 0.3-0.6 g and
0.928-0.940 g/cm, respectively. The prepared and commercial emitting-pipe special materials were
characterized by means of GPC, C NMR, theology and melt strength test. The results show that the
mechanical properties of DGD-3 special material are the same as those of commercial Sabic emitting
pipe special materials but DGD-3 has better processability. The emitting-pipe prepared by DGD-3
meets the national standards, such as good appearance, tensile deformation less than 5.0%, burst
pressure greater than 0.3 Mpa and micropore water flow 3.3 L/h
L Keywords. linear low density polyethylene; blending; cmitting-pipe special material
国外已有滴灌带专用料树脂开发的报道
头抗堵、压力补偿和流量均匀)、抗紫外线照射能
但国内目前尚没有可用于生产滴灌带的专用树脂。
内蒙古某滴灌带生产厂的滴灌带产品是采用以[收稿日期」2012-09-06;L修改稿日期]2012-12-26
Sabic树脂为主料的共混专用料生产的,该产品的
作者简介]邱丽萍(1961ー),女,广西省玉林市人,大学,高
加工性能基本满足要求,但由于共混料的混配均匀
级工程师,电话0459-6763124、电邮qlp459petrochina.com.
cn。联系人:杨国兴,电话0459-6411032,电邮ygx459④
性难以保证,限制了该产品的加工性能、外观性能
petrochina. com. cn
和使用性能。滴灌带应具有一定的水利性能(如滴[基金项目]中国石油炼油与化T分公司项日(201B-27030310)