CN107674454A - 改性碳酸钙及其制备方法和应用 - Google Patents
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Abstract
本发明公开了一种改性碳酸钙及其制备方法和应用,所述改性碳酸钙的制备方法,包括如下步骤:(1)将碳酸钙粉末浸渍于弱碱性的缓冲溶液中20~26小时,然后过滤除水,在真空下,55~65℃干燥10~14小时;(2)然后把步骤(1)的产物碾磨成小于600目的粉末,在碾磨过程中,添加含氨基或脲基的硅烷型偶联剂,即可获得所述的改性碳酸钙。所述改性碳酸钙,可作为添加剂,用于制备氯化聚氯乙烯组合料。本发明采用所述的改性碳酸钙,可以提高氯化聚氯乙烯混配料的相容性,保持其加工稳定性,保持原有物理性能,降低成本。
Description
技术领域
本发明涉及用于氯化聚氯乙烯加工(CPVC)的改性碳酸钙。
背景技术
氯化聚氯乙烯(CPVC)树脂是由PVC树脂氯化而成,其含氯量最高可达73.2%,一般为63~68%。由于在氯乙烯链中引入了氯,故随着氯含量的增加,使树脂分子间的作用力增强,从而提高了树脂的软化温度和机械性能,氯化聚氯乙烯的玻璃化温度比通用聚氯乙烯的玻璃化温度高50℃左右,软化点也比聚氯乙烯高,可在100℃左右长期使用。并且随着氯化度的提高,软化点及耐热性也随之上升。由于CPVC在耐热性、耐蚀性、耐老化性及阻燃自熄性方面远优于PVC树脂,其应用范围要广泛得多。
碳酸钙是一种无机化合物,俗称:灰石、石灰石、石粉、大理石等。主要成分:方解石,化学式是CaCO,呈中性,基本上不溶于水,溶于盐酸。它是地球上常见物质,存在于霰石、方解石、白垩、石灰岩、大理石、石灰华等岩石内,亦为动物骨骼或外壳的主要成分。碳酸钙是重要的建筑材料,工业上用途甚广。
根据碳酸钙生产方法的不同,可以将碳酸钙分为重质碳酸钙、轻质碳酸钙、胶体碳酸钙和晶体碳酸钙。其中在塑料填料领域主要使用重质碳酸钙和轻质碳酸钙。在塑料填料领域主要起到降低成本,少量提高耐热温度的作用。由于普通碳酸钙与塑料的相容性不佳,一般采用经过硬脂酸改性的活性碳酸钙作为填料使用。但是经过硬脂酸钙改性的活性碳酸钙由于其酸性的特点,对于加工特别容易遇酸分解的氯化聚氯乙烯来说,并不适合。
发明内容
本发明的目的是提供一种改性碳酸钙及其制备方法和应用,以克服现有技术存在的缺陷。
所述的改性碳酸钙的制备方法,包括如下步骤:
(1)将碳酸钙粉末浸渍于弱碱性的缓冲溶液中20~26小时,然后过滤除水,在真空下,55~65℃干燥10~14小时;
所述的弱碱性的缓冲溶液,优选硼砂-硼酸体系,pH为7.5~8.5;
(2)然后把步骤(1)的产物碾磨成小于600目的粉末,在碾磨过程中,添加含氨基或脲基的硅烷型偶联剂,即可获得所述的改性碳酸钙;
所述的硅烷型偶联剂的添加量为0.01~0.02mol/Kg碳酸钙粉末;
所述的改性碳酸钙可作为添加剂,用于制备氯化聚氯乙烯组合料,应用方法,包括如下步骤:
(1)将所述的改性碳酸钙、氯化聚氯乙烯、稳定剂、加工助剂和润滑剂,55~80℃混合,冷却到室温;
各个组分的重量份数为:
所述主稳定剂选自甲基硫醇锡、丁基硫醇锡或辛基硫醇锡,包括但不限于Galata公司Mark 1925、Galata公司Mark 2903、Dow化学TM-181;
所述加工助剂为聚丙烯酸酯和聚甲基丙烯酸酯,包括但不限于钟渊化学公司的PA20,PA40,PA60,PA101等
所述润滑选自聚乙烯蜡、氧化聚乙烯蜡、石蜡或酯蜡,包括但不限于Honeywell公司AC-617、Honeywell公司AC-629、Honeywell公司AC-316、中石化58号精制石蜡、Emery公司GH4等。
(2)然后110~130℃挤出,获得粉末状的粉料,即为所述的氯化聚氯乙烯组合料。
采用如下的加工性能测试方法进行检测:
(1)动态热稳定性测试:扭矩流变仪(哈尔滨哈普公司)的混合器温度设定为190℃,转子转速为40转/分钟,称取52克的混合料加入混合器中,启动流变仪,至扭矩曲线出现分解造成的上翘或者下跌,记下该时间作为该配方的稳定时间;
(2)将上述混合料经双辊开炼机开炼后,放入平板硫化机压制成板,按测试标准制样,维卡软化点按GB/T1633-2008标准测试,缺口冲击强度按GB/T1043—2008标准测试。
本发明的有益效果是:
所获得的改性碳酸钙,可以提高氯化聚氯乙烯混配料的相容性,保持其加工稳定性,保持原有物理性能,降低成本。
具体实施方式
实施例1、对比实施例1、对比实施例2
改性碳酸钙制备:
将0.05mol/L硼砂水溶液3L与0.2mol/L硼酸水溶液7L混合,配置pH为8的缓冲溶液;
取1000目重质碳酸钙1Kg至于上述缓冲溶液中,搅拌24小时;
抽滤上述碳酸钙,把抽滤后的碳酸钙至于真空烘箱中,60℃烘干12小时;
把烘干后的碳酸钙置于碾磨机中,碾磨成小于600目的粉末,同时加入含有0.01mol的KH-550(γ-氨丙基三乙氧基硅烷)乙醇溶液,即可获得所述的改性碳酸钙;
氯化聚氯乙烯组合料的配方:
将氯化聚氯乙烯树脂、甲基硫醇锡、Emery GH-4、Honeywell 629和钟渊化学PA-20加入混合机中,混合到60℃,加入上述得到的改性碳酸钙,混合到80℃后加入冷混中,冷却到室温,即为所述的氯化聚氯乙烯组合料;
其中:
甲基硫醇锡,采用Dow化学TM-181,其作用是作为提高热稳定性;
Emery GH-4的化学名称为酯蜡,采用Emery公司的产品,其作用是内润滑作用;
Honeywell 629的化学名称为氧化聚乙烯蜡,采用Honeywell公司的产品,其作用是外润滑作用;
钟渊化学PA-20的化学名称为聚丙烯酸甲酯,采用钟渊化学公司的产品,其作用是促进塑化;
加入挤出机挤出,料筒温度控制为1区130℃,2区120℃,3区110℃,4区110℃,合流芯110℃,不装模头情况下挤出,使得料以近似粉末状被挤出,获得所述的氯化聚氯乙烯组合料。
表1和表2为实施例1、实施例2,对比实施例1~4的配方和检测数据;
表1
从数据可以看出在相同添加量是,改性后的碳酸钙具有更好的物理性能和温度性能。
实施例1、对比实施例3、对比实施例4
改性碳酸钙制备:
将0.05mol/L硼砂水溶液3L与0.2mol/L硼酸水溶液7L混合,配置pH为8的缓冲溶液;
取1000目重质碳酸钙1Kg至于上述缓冲溶液中,搅拌24小时;
抽滤上述碳酸钙,把抽滤后的碳酸钙至于真空烘箱中,60℃烘干12小时;
把烘干后的碳酸钙置于碾磨机中,碾磨成小于600目的粉末,同时加入含有0.02mol的KH-550(γ-氨丙基三乙氧基硅烷)乙醇溶液,即可获得所述的改性碳酸钙;
表2为实施例2,对比实施例3~4的配方和检测数据
表2
制备方法同实施例1。
从上述数据可以看出,在相同物理性能的要求情况下,添加改性碳酸钙可以加入更多的量,能提高加工稳定性和耐热性能,降低成本。
Claims (9)
1.改性碳酸钙的制备方法,其特征在于,包括如下步骤:
(1)将碳酸钙粉末浸渍于弱碱性的缓冲溶液中20~26小时,然后过滤除水,在真空下,55~65℃干燥10~14小时;
(2)然后把步骤(1)的产物碾磨成小于600目的粉末,在碾磨过程中,添加含氨基或脲基的硅烷型偶联剂,即可获得所述的改性碳酸钙。
2.根据权利要求1所述的方法,其特征在于,所述的弱碱性的缓冲溶液为硼砂-硼酸体系,pH为7.5~8.5。
3.根据权利要求1或2所述的方法,其特征在于,所述的硅烷型偶联剂的添加量为0.01~0.02mol/Kg碳酸钙粉末。
4.根据权利要求1~3任一项所述方法制备的改性碳酸钙的应用,其特征在于,作为添加剂,用于制备氯化聚氯乙烯组合料。
5.根据权利要求4所述的应用,其特征在于,应用方法,包括如下步骤:
(1)将所述的改性碳酸钙、氯化聚氯乙烯、稳定剂、加工助剂和润滑剂,55~80℃混合,冷却到室温;(2)然后110~130℃挤出,获得粉末状的粉料,即为所述的氯化聚氯乙烯组合料。
6.根据权利要求4所述的应用,其特征在于,各个组分的重量份数为:
7.根据权利要求6所述的应用,其特征在于,所述稳定剂选自甲基硫醇锡、丁基硫醇锡或辛基硫醇锡。
8.根据权利要求6所述的应用,其特征在于,所述加工助剂为聚丙烯酸酯和聚甲基丙烯酸酯中的一种以上。
9.根据权利要求6所述的应用,其特征在于,所述润滑选自聚乙烯蜡、氧化聚乙烯蜡、石蜡或酯蜡。
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1597763A (zh) * | 2004-08-18 | 2005-03-23 | 上海氯碱化工股份有限公司 | 高填充未增塑聚氯乙烯/碳酸钙复合材料及其制备方法 |
CN101260249A (zh) * | 2008-04-14 | 2008-09-10 | 上海华明高技术(集团)有限公司 | 一种纳米碳酸钙的改性方法及含纳米碳酸钙的聚烯烃母粒 |
CN101775237A (zh) * | 2010-01-29 | 2010-07-14 | 大连友兰企业集团有限公司 | 偶联超细研磨重质碳酸钙加工方法 |
CN101875749A (zh) * | 2010-06-22 | 2010-11-03 | 浙江工业大学 | 用于增韧聚氯乙烯的活性微米/纳米复配碳酸钙及其制备 |
CN102174275A (zh) * | 2011-03-15 | 2011-09-07 | 广西华纳新材料科技有限公司 | 一种纳米碳酸钙表面改性的方法 |
CN104212101A (zh) * | 2014-09-22 | 2014-12-17 | 无为县华祥电缆材料有限公司 | 一种改性聚氯乙烯电力电缆保护料 |
CN104263014A (zh) * | 2014-06-17 | 2015-01-07 | 池州市大恒生化有限公司 | 一种涂料用的高纯度活性碳酸钙的制备方法 |
CN105175962A (zh) * | 2013-01-25 | 2015-12-23 | 江苏理工学院 | 一种氯化聚氯乙烯改性材料 |
CN106543609A (zh) * | 2016-10-12 | 2017-03-29 | 上海氯碱化工股份有限公司 | 改善氯化聚氯乙烯加工性能的方法 |
-
2017
- 2017-08-16 CN CN201710699426.4A patent/CN107674454A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1597763A (zh) * | 2004-08-18 | 2005-03-23 | 上海氯碱化工股份有限公司 | 高填充未增塑聚氯乙烯/碳酸钙复合材料及其制备方法 |
CN101260249A (zh) * | 2008-04-14 | 2008-09-10 | 上海华明高技术(集团)有限公司 | 一种纳米碳酸钙的改性方法及含纳米碳酸钙的聚烯烃母粒 |
CN101775237A (zh) * | 2010-01-29 | 2010-07-14 | 大连友兰企业集团有限公司 | 偶联超细研磨重质碳酸钙加工方法 |
CN101875749A (zh) * | 2010-06-22 | 2010-11-03 | 浙江工业大学 | 用于增韧聚氯乙烯的活性微米/纳米复配碳酸钙及其制备 |
CN102174275A (zh) * | 2011-03-15 | 2011-09-07 | 广西华纳新材料科技有限公司 | 一种纳米碳酸钙表面改性的方法 |
CN105175962A (zh) * | 2013-01-25 | 2015-12-23 | 江苏理工学院 | 一种氯化聚氯乙烯改性材料 |
CN104263014A (zh) * | 2014-06-17 | 2015-01-07 | 池州市大恒生化有限公司 | 一种涂料用的高纯度活性碳酸钙的制备方法 |
CN104212101A (zh) * | 2014-09-22 | 2014-12-17 | 无为县华祥电缆材料有限公司 | 一种改性聚氯乙烯电力电缆保护料 |
CN106543609A (zh) * | 2016-10-12 | 2017-03-29 | 上海氯碱化工股份有限公司 | 改善氯化聚氯乙烯加工性能的方法 |
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