CN101472984A - 适用于长丝的树脂组合物、长丝和生产长丝的方法 - Google Patents
适用于长丝的树脂组合物、长丝和生产长丝的方法 Download PDFInfo
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- CN101472984A CN101472984A CNA2007800226133A CN200780022613A CN101472984A CN 101472984 A CN101472984 A CN 101472984A CN A2007800226133 A CNA2007800226133 A CN A2007800226133A CN 200780022613 A CN200780022613 A CN 200780022613A CN 101472984 A CN101472984 A CN 101472984A
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Abstract
适用于长丝的树脂组合物,包含密度为935~965kg/m3的乙烯-α-烯烃共聚物和每100重量份乙烯-α-烯烃共聚物中配比的0.1~10重量份的农药,其中所述共聚物是乙烯和含4~8个碳原子的α-烯烃的共聚物以及所述组合物的熔体流动速率为0.3~7g/10min,熔体流动速率比为10~50和密度为935~980kg/m3。
Description
技术领域
本发明涉及适用于长丝的树脂组合物,由该树脂组合物制成的长丝和生产长丝的方法。
背景技术
通过在烯烃-基树脂如聚丙烯、聚乙烯等中复合进农药所得到的组合物已被加工成各种模塑制品并用作预防害虫如蜱、虱子、蚊虫、苍蝇的材料。例如,JP-A-04-065509公开了由熔纺聚丙烯树脂和农药的组合物所得到的长丝。进一步,JP-A-06-315332公开了线形低密度聚乙烯和农药的组合物以及由该组合物制成的颈圈。此外,JP08-A-302080公开了高密度聚乙烯、低密度聚乙烯和农药的组合物以及由该组合物制成的膨胀膜。
但是,当把聚烯烃树脂和农药的传统树脂组合物模塑成长丝时,熔纺性和热拉伸性都不够满意。
发明的公开内容
在这种情况下,本发明的目的是提供能使长丝具有优良热拉伸性和良好熔纺性的含乙烯-α-烯烃共聚物和农药的树脂组合物,由该组合物制成的长丝以及用该组合物生产长丝的方法。
即,本发明的第一发明点涉及适用于长丝的树脂组合物,它包含密度为935~965kg/m3的乙烯-α-烯烃共聚物和每100重量份乙烯-α-烯烃共聚物中配比的0.1~10重量份的农药,其中所述共聚物是乙烯和含4~8个碳原子的α-烯烃的共聚物以及所述树脂组合物的熔体流动速率(MFR)为0.3~7g/10min,熔体流动速率比(MFRR)为10~50和密度为935~980kg/m3。
进一步,本发明的第二发明点涉及由上述树脂组合物制成的长丝。
又更进一步,本发明的第三发明点涉及生产长丝的方法,该方法包含把树脂组合物熔体挤出成形为线状,排出线状组合物,并在70~120℃加热下热拉伸排出的线状组合物。
发明详述
本发明第一发明点的树脂组合物含乙烯和含4~8个碳原子的α-烯烃的共聚物和农药,所述共聚物的密度为935~965kg/m3。农药的含量为每100重量份乙烯-α-烯烃共聚物配比0.1~10份农药。
农药的含量,从防粘的观点看,优选是5重量份或更少,更优选3重量份或更少,相反,从提高杀虫性的观点看,优选0.5重量份或更多,更优选1重量份或更多。
第一和第二发明点中的树脂组合物的熔体流动速率(MFR)为0.3~7g/10min。当MFR小于0.3g/10min时,熔体-可挤出性会变差,因为在长丝模塑期间的挤出载荷变得太高。MFR优选为0.5g/10min或更大,更优选0.7g/10min或更大。
相反,当MFR超过7g/10min时,热拉伸性和力学强度会变差。此外,MFR优选为5g/10min或更小,更优选3g/10min或更小。MFR用按照JIS K7210-1955的方法在21.18N的载荷和190℃的温度下测定。
第一和第二发明点中的树脂组合物的熔体流动速率比(MFRR)是10~50。当MFRR超过50时,熔纺能力会变差。MFRR优选为45或更小,更优选40或更小。
进一步,当MFRR低于10时,熔体-可挤出性会变差。此外,MFRR优选为15或更大,更优选20或更大。MFRR是把按照JIS K7210-1995在190℃和211.83N载荷下测得的熔体流动速率值(MFR-H,单位:g/10min)值除以按照JIS K7210-1995在190℃和21.18N载荷下测得的MFR值所得到的值。
本发明第一和第二发明点中的树脂组合物的密度是935~980kg/m3。当密度超过980kg/m3时,热拉伸性会变差。密度优选为975kg/m3或更低,更优选970kg/m3或更低,又更优选965kg/m3或更低。另一方面,当密度低于935kg/m3时,热拉伸性会变差。密度优选为940kg/m3或更高,更优选945kg/m3或更高。组合物的密度,在按JIS K6760-1995中所述的低密度聚乙烯的方法进行退火后,按JIS K7112-1980中的A-方法测定。
从提高热拉伸性的观点看,本发明第一和第二发明点中的树脂组合物的胀大比(SR)优选为1.40或更小,更优选1.30或更小,又更优选1.25或更小。另一方面,从提高熔体-可挤出性的观点看,SR优选为1.10或更大,更优选1.13或更大,又更优选1.16或更大。
测定按照JIS K7210-1995在21.18N载荷和190℃下从直径为D0的小孔挤出的料条的直径并把胀大比(SR)定义为料条直径(D)与小孔直径(D0)之比(D/D0)。
本发明中所用的乙烯-α-烯烃共聚物是乙烯和含4~8个碳原子的α-烯烃的共聚物,且密度为935~965kg/m3。用这种乙烯-α-烯烃共聚物,可获得除热拉伸性以外耐环境应力性也优良的长丝。α-烯烃的实例包括1-丁烯、1-戊烯、1-己烯、1-庚烯、1-辛烯、4-甲基-1-戊烯和4-甲基-1-己烯,而且它们可单独使用或以2种或多种组合使用。密度,在按JIS K6760-1995所述的低密度聚乙烯的方法进行退火后,按照JISK7112-1980中的A-方法测定。
乙烯-α-烯烃共聚物中基于乙烯的单体单元的含量常是乙烯-α-烯烃共聚物总重量(100wt%)的90~99.9wt%。共聚物中基于α-烯烃的单体单元的含量常是共聚物总重量(100wt%)的0.1~10wt%。
乙烯-α-烯烃共聚物的实例包括乙烯-1-丁烯共聚物、乙烯-1-己烯共聚物、乙烯-1-辛烯共聚物、乙烯-1-丁烯-1-己烯共聚物,而且从耐环境应力性更好的观点看,优选乙烯-1-丁烯共聚物和乙烯-1-己烯共聚物,更优选乙烯-1-丁烯共聚物。
从提高熔体-可挤出性的观点看,乙烯-α-烯烃共聚物的MFR优选为0.1或更大,更优选0.3g/10min,又更优选0.6g/10min或更大。
进一步,从提高热拉伸性和力学强度的观点看,MFR优选为6g/10min或更小,更优选4g/10min或更小,又更优选2g/10min或更小。
MFR按JIS K7210-1995的方法,在21.18N的载荷和190℃的温度下测定。
从提高熔纺性的观点看,乙烯-α-烯烃共聚物的熔体流动速率比(MFRR)优选为50或更小,更优选45或更小,最优选40或更小。另一方面,从提高熔体-可挤出性的观点看,MFRR优选为10或更大,更优选15或更大,最优选20或更大。MFRR是把按照JIS K7210-1995在190℃和211.83N荷下测得的熔体流动速率值(MFR-H,单位:g/10min)除以按照JIS K7210-1995在190℃和21.18N载荷下测得的MFR值所得到的值。
从提高热拉伸性的观点看,乙烯-α-烯烃共聚物的密度是965kg/m3或更小,优选960kg/m3或更低,更优选955kg/m3或更低,更优选950或更低。另一方面,从热拉伸性的观点看,密度为935kg/m3或更高,优选940kg/m3或更高,更优选945kg/m3或更高。密度要在按JISK6760-1995所述的低密度聚乙烯的方法进行退火后,按照JISK7112-1980中的A-方法测定。
从提高熔纺性的观点看,乙烯-α-烯烃共聚物的最大收丝速度(MTV)优选是70m/min或更大,更优选100m/min或更大,最优选130m/min。另一方面,从提高力学强度的观点看,MTV优选500m/min或更小,更优选400m/min或更小,最优选300m/min。
MTV是指,当装在9.5mmφ料筒中的熔体树脂在温度为190℃和活塞下降速度为5.5m/min的条件下从直径为2.09mm和长度为8mm的小孔中挤出并用直径为150mm的卷绕辊以40rpm的上升收丝速度卷绕时,使熔体树脂破裂的收丝速度。
关于乙烯-α-烯烃共聚物的生产方法,可列举已知的方法,如溶液聚合法、淤浆聚合法、气相聚合法和用已知聚合催化剂,如Zieglar-Natta催化剂、铬-基催化剂或茂金属催化剂,的高压离子聚合法。
此外,聚合方法可以是间歇聚合法或连续聚合法,进一步还可以采用多步聚合法。
上述Zieglar-Natta催化剂包括,例如,下列催化剂(1)和(2):
(1)由组合通过把至少一种选自三氯化钛、三氯化钒、四氯化钛和钛的卤代醇化物载在镁化合物-基载体上所制成的组分与有机金属化合物助催化剂所得到的催化剂,和
(2)由组合镁化合物和钛化合物的共沉淀或共结晶产物与有机金属化合物助催化剂所得到的催化剂。
铬-基催化剂包括,例如,由组合通过把铬化合物载在二氧化硅或二氧化硅-氧化铝上所制成的组分与有机金属化合物助催化剂所得到的催化剂。
茂金属催化剂包括,例如,下列催化剂(1)~(4)
(1)由组合含有带含环戊二烯骨架的基团的过渡金属化合物的组分与含铝氧烷化合物的组分所得到的催化剂,
(2)由组合上述含过渡金属化合物的组分与含离子化合物,如甲苯基硼酸盐或硼酸苯胺盐的组分所得到的催化剂,
(3)由组合上述含过渡金属化合物的组分和上述含离子化合物的组分与有机铝化合物所得到的催化剂,
(4)通过把上述各组分支持在无机颗粒载体,如SiO2或Al2O3或聚合物颗粒载体如烯烃(如乙烯、苯乙烯)聚合物上或浸渍在载体中所得到的催化剂。
关于乙烯-α-烯烃共聚物的生产方法,优选用Zieglar-Natta催化剂或茂金属催化剂作为聚合催化剂的方法。
进一步,从提高熔纺性的观点看,优选缩短聚合期间生成聚合物的驻留时间分布,而且,为缩短驻留时间分布,优选一步聚合,更进一步,在用多个反应容器的方法中,优选用并联反应容器操作聚合。
在本发明中所用的农药包括具有杀虫活性的化合物,如杀虫剂、昆虫生长控制剂、驱虫剂等。
农药包括拟除虫菊酯化合物、有机磷化合物、氨基甲酸酯化合物、苯基吡唑化合物等等。拟除虫菊酯化合物包括氯菊酯、丙烯菊酯、d-丙烯菊酯、dd-丙烯菊酯、d-胺菊酯、炔丙菊酯、d-苯醚菊酯、d-苄呋菊酯、右旋烯炔菊酯、氰戊菊酯、高氰戊菊酯、甲氰菊酯、氯氟氰菊酯、醚菊酯、四溴菊酯、菊酯、五氟苯菊酯、环戊烯丙菊酯、溴氰菊酯、苯醚菊酯、七氟菊酯、联苯菊酯、氟氯氰菊酯、苯醚菊酯、氯氰菊酯和α-氯氰菊酯。有机磷化合物的实例包括phenitrothion、dichlorobos、敌敌畏、二溴磷、倍硫磷、杀螟腈、克洛皮洛福、二嗪磷、calcholphos和蔬果磷。
氨基甲酸酯化合物的实例包括甲氧基亚磺氨苯酚钠、残杀威、仲丁威和甲萘威。苯基吡唑化合物的实例包括氟虫腈。
昆虫生长控制剂的实例包括吡丙醚、甲氧普烯、烯虫乙酯、除虫脲、灭蝇胺、双氧威和虱螨脲(CGA184599)。
驱虫剂的实例包括二乙基对甲苯磺酰胺(diethyltolamide)和二丁基邻苯二甲酸酯。
这些农药能单独使用或以2种或多种的混合物使用。2种或多种机理彼此不同的杀虫剂的组合使带感染性的昆虫对杀虫剂的抗药性难以表现。作为农药剂,优选杀虫剂,更优选拟除虫菊酯化合物,更优选25℃下蒸气压小于1×10-6mmHg的拟除虫菊酯化合物。25℃下蒸气压小于1×10-6mmHg的拟除虫菊酯化合物的实例包括苄呋菊酯和d-氯菊酯。
在本发明的树脂组合物中可配混具有提高防虫活性作用的化合物。所述化合物的实例包括胡椒基丁醚、MGK264和八氯丙醚。
进一步,在本发明的树脂组合物中可加进保留农药的载体材料。作为载体材料,要用能保留、支持、吸收、吸附、浸渍、渗透或注射农药的材料,以及其实例包括二氧化硅-基化合物、氧化锆、粘土材料、金属氧化物、云母、水滑石和有机载体。二氧化硅-基化合物的实例包括非-晶(无定形)二氧化硅和结晶二氧化硅,例如,粉状硅酸、细粉状硅酸、酸性白土、硅藻土、石英和白炭。氧化锆的实例包括A-型氧化锆和丝光沸石。粘土材料的实例包括蒙脱土、皂石、贝得石、膨润土、高岭石、叙永石、珍珠陶土、迪开石、富硅高岭石、伊利石和绢云母。金属氧化物的实例包括氧化锌、氧化镁、氧化铝、氧化铁、氧化铜和氧化钛。云母的实例包括云母和蛭石。水滑石的实例包括水滑石和蒙皂石。作为有机载体,可罗列煤(例如,焦炭、泥炭、玻璃泥炭)、聚合物珠(例如,细晶纤维素、聚苯乙烯珠、聚丙烯酸酯-基珠、聚甲基丙烯酸酯-基珠、聚乙烯醇-基珠)和它们的交联聚合物珠。更进一步可罗列珠光体、石膏、陶瓷和火山岩。
作为农药载体,优选非-晶无机载体,更优选无定形二氧化硅。
当用农药载体时,农药载体在树脂组合物中的含量常是每100重量份乙烯-α-烯烃共聚物配比0.1~20重量份农药。从提高力学强度的观点看,优选10重量份或更少,更优选5重量份或更少。相反,从提高害虫控制性的观点看,优选0.5重量份或更多,更优选1重量份或更少。
在本发明的树脂组合物中可加入抗氧剂、防粘连剂、填料、润滑剂、抗静电剂、防老化剂、颜料、加工助剂和金属皂之类的添加剂和烯烃-基聚合物以外的聚合物组分。
2种或多种添加剂和聚合物组分可以被分别加入。
本发明的树脂组合物可以通过用周知的方法熔体-捏和乙烯-基聚合物、农药和任选的其它组分而得到。例如,一种典型方法是,先混合乙烯-α-烯烃共聚物与农药,然后用挤出机、滚动模塑机、捏和机或类似设备,熔体-捏和所得的混合物;还有一种方法是,分别把乙烯-基聚合物和农药喂进挤出机或类似设备,然后熔体-捏和之。在用挤出机进行熔体-捏和时,农药可以从挤出机中段靠加料装置,如侧挤出机或喂料机,喂进。
在树脂组合物的生产中,农药可以在农药已经过处理,如保留、支持、浸渍、渗透、注射、吸附或吸收在载体上或载体内之后使用,进一步也可以把经过上述处理的农药或未处理农药通过把农药加进树脂面以母料使用。
用作母料基础的树脂的实例包括乙烯-基树脂、丙烯-基树脂、丁烯-基树脂、4-甲基-1-戊烯-基树脂和这些树脂的改性产物、皂化产物和氢化产物。作为优选树脂,可罗列乙烯-基树脂,如高密度聚乙烯、线形低密度聚乙烯、线形极低密度聚乙烯、线形超低密度聚乙烯、高压法低密度聚乙烯和乙烯-醋酸乙烯酯共聚物;和丁二烯-基聚合物的氢化产物。
当在树脂组合物的生产中使用母料时,母料的用量常少于树脂组合物重量(100wt%)的50wt%,而且从提高经济效益的观点看,优选20wt%或更少,更优选10wt%或更少。
由于本发明的树脂组合物具有优良的熔纺性和良好的熔体-可挤出性,所以被模塑成长丝,如复丝或长丝,并应用之。而且,由该树脂组合物制成的长丝具有优良的热拉伸性和良好的力学强度。此外,用该树脂组合物生产长丝的方法具有成本优点,因为有可能以一步拉伸操作从挤出机喷嘴中高速排出树脂组合物从而进行纺丝并高度拉伸该长丝。
关于把本发明的树脂组合物模塑成长丝的方法,可列举熔纺法和(直接)纺(丝)-拉(伸)法,如包括下列步骤的方法:(1)熔化树脂组合物并通过齿轮泵之类从口模/喷嘴中以线状排出组合物,(2)然后,拉伸该排出的线状熔体,接着纺丝,同时用冷却介质如水或空气冷却丝束,(3)进行处理,如热拉伸、热处理、上油等,如果必要,卷绕长丝。
在获得长丝的方法中,为了热拉伸在纺丝中得到的模塑物以制成长丝,热拉伸温度优选为70~120℃,而且从提高热拉伸性的观点看,更优选75~115℃,又更优选80~110℃,最优选90~105℃。
长丝的截面形状包括圆形、椭圆形、三角形、正方形、六角形、星形等。
由本发明的树脂组合物制成的长丝的用途包括用作长丝、网状物,如蚊帐、窗纱或门纱、防虫网;绳索;过滤器等等,以及用作复丝、绳索;纱线;网状物、地毯;无纺布;过滤器;鞋履;衣着等。尤其适用于需要防虫的应用,例如,窗纱或门纱、防虫网、蚊帐、过滤器、地毯、鞋履、衣着等。
拟用本发明树脂组合物的长丝控制的害虫包括节足动物,如蜘蛛、螨类和昆虫。现进一步详述如下。
蜘蛛纲包括,例如,育母蜘蛛(如林禽剌螨、囊禽剌螨、红蜘蛛、腐食酸螨);和蜘蛛目(例如,卡氏地蛛、舌幽灵蛛)。唇足纲包括,例如,蚰蜒目(例如,花蚰蜒);和石蜈蚣目(例如bothropolys rugosus)。倍足纲包括,例如,polydesmoidea(例如,Oxidus gracilis、Nedyopus tambanus)。
此外,昆虫纲的实例包括缨尾目(例如,蠹虫);直翅目(例如,日本灶马、日本苍术、东亚飞蝗、非洲沙漠蝗、小翅稻蝗);皮翅目(例如,欧洲球螋);蜚蠊目(德国蠊、黑胸大蠊、日本大蠊、美洲大蠊);等翅目(例如,散白蚁、台湾家白蚁、小楹白蚁);啮虫目(嗜虫书虱、嗜卷书虱);食毛目(例如,犬啮毛虱、猫啮毛虱);虱目(衣虱、阴虱、体虱);半翅类(例如,褐飞虱、黑尾叶蝉、温室粉虱、烟蚜、温带臭虫、茶翅蝽);甲虫目(例如,日本黑皮蠹、小圆皮蠹、黄守瓜、玉米象、褐粉蠹、拟裸蛛甲(gibbium aequinoctiale)、日本株甲、日本金龟子);蚤目(例如,猫跳蚤、狗跳蚤、人跳蚤);双翅目(例如,淡色库蚊、埃及斑蚊、对按蚊、maringouin、摇蚊、毛蠓、家蝇、夏厕蝇、虻、allograpta iavana);和膜翅目(日本大黄蜂、亚非马蜂、日本松绿叶蜂、栗瘿蜂、日本白蜡吉丁肿腿蜂、小家蚁)。
实施例
本发明用以下的实施例和对比实施例来详述。
实施例和对比实施例中的物理性能用下述方法测定:
(1)熔体流动速率(MFR,单位:g/10min)
按JIS K7210-1995在190℃和21.18N载荷的条件下测定。
(2)熔体流动速率比(MFRR)
熔体流动速率比(MFRR)是把按JIS K7210-1995在190℃和为211.83N(21.60kg)载荷下测得的熔体流动速率值除以在190℃和为21.18N(2.16kg)载荷下测得的熔体流动速率值所得到的值。
(3)密度(单位:kg/m3)
树脂组合物的密度,在按JIS K6760-1995所述的低密度聚乙烯的方法进行退火后,按JIS K7112-1980中的A方法测定。
(4)胀大比(SR)
在按JIS K7210-1995在21.18N的载荷和190℃下测定熔体流动速率时,测定从小孔挤出的料条的直径,并把条料直径(D)和小孔直径(D0)之比定义为SR值。
(5)最大收丝速度(MTV,单位:m/min)
用Toyo Seiki Seisaku-sho Ltd.制造的熔体张力试验仪,把容纳在9.5mmφ料筒内的熔体树脂,在190℃下,从直径为2.09mm和长度为8mm的小孔中,以5.5mm/min的下降速度挤出,然后用直径为150mm的卷绕辊,以40rpm上升收丝速度,卷绕挤出的熔体树脂,并测量使熔体树脂发生断裂的收丝速度。当该值较大时,表示熔纺性较好。
(6)长丝的热拉伸性
直径为450μm的长丝的热拉伸以(i)~(v)中所述的方法进行并测定拉伸后标记线之间的长度,然后计算标记线之间长度的伸长率。当该伸长率较大时,表示热拉伸性更好。
(i)切割70cm长的长丝并标出沿长度方向间距为40mm的2条线。
(ii)固定(i)中所制长丝样品的一端。
(iii)安装热空气加热器,使加热器出口与长丝之间的距离为50mm,用热空气加热器加热2条标记线之间的长丝15s或30s。加热15s和30s后的长丝温度分别为85℃和98℃。
(iv)加热后,以100m/min的速度拉伸长丝上未固定的一端。
(v)拉伸后,测量标记线之间的长度(mm),并按下式计算标记线之间长度的伸长率。此外,当长丝在拉伸期间被拉断时,测定各断裂长丝上标记线与断裂点之间的长度并把总长度定义为标记线之间的长度。
标记线之间长度的伸长率=(拉伸后标记线之间的长度-拉伸前标记线之间的长度)/(拉伸前标记线之间的长度)×100(%)
拉伸前标记线之间的长度=40mm。
(7)长丝的力学强度
在夹头间距为20mm和拉伸速度为500mm/min的条件下,对直径为450μm的长丝进行拉伸试验,以测定拉伸断裂强度(单位:MPa)和归一化拉伸断裂应变(单位:%)。这些值越大,则力学强度越好。
(8)长丝的耐环境应力
长丝的耐环境应力用以下(a)~(d)中所述的方法测定。
(a)把直径为200μm的长丝切割成20cm长,把切断的长丝穿过带勾砝码(55.5±0.5g)的勾子部分。
(b)连接长丝的两端并夹在一起使之固定。把勾子上端与夹头之间的长度调节成2cm。
(d)在长丝经50℃浸泡后,测定直到长丝断裂的时间。测量至多进行45h。直到长丝断裂的时间越长,则耐环境应力性越好。
实施例1
(1)树脂组合物的制备
用Labo Plastmill(Toyo Seiki Seisaku-sho Ltd.制造)在温度为160℃和转速为60rpm的条件下,把100重量份高密度聚乙烯粒料[GD9550F(此后称做“HD-1”,HD-1的物理性能示于表1),Basell Polyolefin Co.,Ltd.制造]和2.6重量份氯菊酯(Sumitomo Chemical Co.,Ltd.制造,商品名:)熔体-捏和10min,以得到树脂组合物(此后称之为“组合物-1”)。所得组合物-1的物理性能的评价结果示于表2。
(2)长丝的制造
用Toyo Seiki Seisaku-sho,Ltd.制造的Capirograph和型孔(L/D:40/1mm,流动角:90°),在温度为190℃和活塞下降速度为10mm/min的条件下,熔体挤出组合物-1,以得到挤出线,用Capirograph所带的收丝设备,以约3m/min的速度,收卷熔体-挤出线,以得到直径为450μm的长丝。进一步,通过在相同条件下但活塞下降速度改为3mm/min下进行,获得直径为200μm的长丝。所得长丝的物理性能的评价结果示于表2。
实施例2
(1)树脂组合物的制备
用搅拌法混合48重量份氯菊酯(Sumitomo Chemical Co.,Ltd.制造,商品名:)和52重量份无定形二氧化硅(Fuji Silysia Chemical Ltd.制造,商品名: 530),以制成农药载体。用Labo Plastmill(ToyoSeiki Seisaku-sho Ltd.制造),在温度为160℃和转速为60rpm的条件下,把100重量份HD-1粒料和4.9重量份农药载体熔体-捏和10min,以得到树脂组合物(此后称之为“组合物-2”)。所得组合物-2的物理性能的评价结果示于表2。
(2)长丝的制造
以与实施例1“长丝的制造”中相同的方法,把组合物-2加工成直径为450μm和200μm的长丝。所得长丝的物理性能的评价结果示于表2。
实施例3
(1)树脂组合物的制备
用搅拌法混合51重量份氯菊酯(Sumitomo Chemical Co.,Ltd.制造,商品名:)、47.5重量份无定形二氧化硅(Fuji Silysia Chemical Ltd.制造,商品名:530)和1.5重量份抗氧剂(丁基羟基甲苯),以制成农药载体。用Labo Plastmill(Toyo Seiki Seisaku-sho Ltd.制造)在温度为160℃和转速为60rpm的条件下,把60.3重量份线形低密度聚乙烯粒料[Sumitomo Chemical Co.,Ltd.制造,商品名: -LGA807(MFR:25g/10min,密度:913kg/m3,乙烯-1-丁烯共聚物)、34.2重量份农药载体和5.5重量份硬脂酸锌熔体-捏和10min,以得到农药母料。然后,用Labo Plastmill(Toyo Seiki Seisaku-sho Ltd.制造),在温度为160℃和转速为60rpm的条件下,把100重量份HD-1粒料、14.7重量份农药母料和0.8重量份硬脂酸锌熔体-捏和10min,以得到树脂组合物(此后称之为“组合物-3”)。所得组合物-3的物理性能的评价结果示于表2。
(2)长丝的制造
以与实施例1“长丝的制造”中相同的方法把组合物-3加工成直径为450μm和200μm的长丝。所得长丝的物理性能的评价结果示于表2。
对比实施例1
以与实施例1中相同的方法,但把HD-1更换为高密度聚乙烯HYA(Exxon-Mobil Ltd.制造),制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表3。
对比实施例2
以与实施例2中相同的方法,但把HD-1更换成HD-2,制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表3。
对比实施例3
以与实施例3中相同的方法,但把HD-1更换成HD-2,制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表3。
实施例4
以与实施例3中相同的方法,但把HD-1更换成高密度聚乙烯Nipolon hard 5700(Tohso Ltd.制造)(此后称之为“HD-3”,HD-3的物理性能示于表1),制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表2。
实施例5
以与实施例3中相同的方法,但把HD-1更换成高密度聚乙烯KEIYO聚乙烯E-3100(Keiyo Polyethylene Ltd.制造)(此后称之为“HD-4”,HD-4的物理性能示于表1),制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表2。
对比实施例4
以与实施例3中相同的方法,但把HD-1更换成高密度聚乙烯GC7260(Basell Polyolefin Ltd.制造)(此后称之为“HD-5”,HD-5的物理性能示于表1),制造树脂组合物和长丝。所得组合物和长丝的物理性能的评价结果示于表3。
表1
聚合体 | 共聚单体含量(wt%)*1 | 密度(kg/m3) | MFR(g/10min.) | MFRR | MTV(m/min.) | |
HD-1 | 乙烯-1-丁烯共聚物 | 0.8 | 949 | 1.0 | 39 | 150 |
HD-2 | 乙烯均聚物 | - | 957 | 0.7 | 67 | 44 |
HD-3 | 乙烯-1-丁烯共聚物 | 0.7 | 951 | 1.0 | 32 | 126 |
HD-4 | 乙烯-1-丁烯共聚物 | 0.7 | 949 | 1.0 | 33 | 157 |
HD-5 | 乙烯-1-丁烯共聚物 | 0.6 | 957 | 7.8 | 30 | 492 |
*1:基于1-丁烯的单体单元在乙烯-1-丁烯共聚物中的含量。
工业应用性
按照本发明,能提供含乙烯-α-烯烃共聚物和农药的,能使长丝具有优良热拉伸性并具有良好熔纺性的树脂组合物,以及由该组合物制成的长丝和用该组合物生产长丝的方法。进一步,该含农药的树脂组合物具有优良的可挤出性,由该树脂组合物制成的长丝具有良好的力学强度以及用该树脂组合物生产长丝的方法具有成本优越性。
Claims (5)
1.适用于长丝的树脂组合物,该组合物包含密度为935~965kg/m3的乙烯-α-烯烃共聚物和每100重量份乙烯-α-烯烃共聚物中配比的0.1~10重量份的农药,其中所述共聚物是乙烯和含4~8个碳原子的α-烯烃的共聚物,以及所述组合物的熔体流动速率为0.3~7g/10min,熔体流动速率比为10~50和密度为935~980kg/m3。
2.按照权利要求1的树脂组合物,其中乙烯-α-烯烃共聚物的熔体流动速率为0.1~6g/10min和熔体流动速率比为10~50。
3.按照权利要求1的树脂组合物,其中乙烯-α-烯烃共聚物是乙烯-1-丁烯共聚物。
4.由权利要求1~3中任何一项的树脂组合物制成的长丝。
5.生产长丝的方法,包含把权利要求1~3中任何一项的树脂组合物熔体-挤出成形为线状,
排出线状组合物,和
在70~120℃加热条件下热拉伸排出的线状组合物。
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CN114573905A (zh) * | 2022-03-11 | 2022-06-03 | 福建菲克斯达纺织有限公司 | 具有长效驱防虫功效的塑料母粒配方、加工工艺及使用方法 |
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WO2012069049A1 (en) | 2010-11-23 | 2012-05-31 | Vestergaard Frandsen Sa | A product with low density polymer resin releasing fipronil in a controlled way and use of such a product |
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