CN105802045A - 一种环保增韧型聚苯乙烯保温挤塑板及其制备方法 - Google Patents
一种环保增韧型聚苯乙烯保温挤塑板及其制备方法 Download PDFInfo
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Abstract
本发明公开一种环保增韧型聚苯乙烯保温挤塑板,包括以下组分:聚苯乙烯颗粒400~600份;过氧化苯甲酰丁酯15~20份;过氧化苯甲酰15~20份;十二烷基苯磺酸钠8~10份;四聚丙烯苯磺酸钠5~8份;4‑甲基戊酸钠10~12份;甲基异噻唑啉酮2~4份;发泡剂5~8份;色母粒4~8份;各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。本发明的配方中使用融化温度较低一些的材料,同时在成核剂4‑甲基戊酸钠内混入表面活性剂十二烷基苯磺酸钠和四聚丙烯苯磺酸钠,让板材泡孔比较均匀,同时表面光滑,不会较软脆性减小。
Description
技术领域
本发明涉及一种环保增韧型阻燃聚丙乙烯挤塑板及其制备方法。
背景技术
市场上现有的外墙保温材料主要使用改苯板、聚氨酯板以及挤塑板,其中苯板最便宜,保温效果一般,会吸水发生变形,做完保温层之后需要做其它的一些防水等措施。聚氨酯是现有保温材料里面性能最好的一种,冰箱冷库等领域的保温材料用的就是聚氨酯,导热系数远远低于苯板和挤塑板,基本上一半厚度的聚氨酯保温层就可以达到苯板和挤塑板原厚度的保温效果,不过价格要比苯板和挤塑板高出不少。挤塑板相较苯板保温效果要好很多,导热系数比苯板低,价格稍高与苯板,而低于聚氨酯板。
挤塑板是第三代硬质发泡保温材料,生产工序简单,它是由聚苯乙烯树脂及其它添加剂经挤压过程制造出的拥有连续均匀表层及闭孔式蜂窝结构的板材,这些蜂窝结构的厚板,完全不会出现空隙,这种闭孔式结构的保温材料可具有极高的压力,同时拥有同等低值的导热系数(仅为0.027W/M.K)和经久不衰的优良保温和抗压性能。目前XPS板材即聚苯乙烯挤塑板在生产中因高温熔融,破坏了材料本身的特性。所以生产出的板材会比较软而且比较脆,很容易折断。
发明内容
发明目的:本发明目的在于针对现有技术的不足,通过添加混有表面活性剂的成核剂,提供一种环保增韧型聚苯乙烯保温挤塑板;
本发明的再一目的在于提供一种上述挤塑板的制备方法。
技术方案:本发明所述环保增韧型聚苯乙烯保温挤塑板,包括以下组分:
各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。
本发明优选地技术方案为,所述的环保增韧型聚苯乙烯保温挤塑板,包括以下组分:
优选地,所述色母粒的载体为聚全氟乙丙烯。
本发明环保增韧型聚苯乙烯保温挤塑板的制备方法,包括如下步骤:
(1)将聚苯乙烯回收料和聚苯乙烯废料回收后混合造粒,与聚苯乙烯新料共同加入混料机中,再向混料机中加入过氧化苯甲酰丁酯、过氧化苯甲酰,启动混料机混合物料,并将混合物料加热至180~240℃,保温搅拌2~4小时后停机冷却;
(2)向混料机中加入十二烷基苯磺酸钠、四聚丙烯苯磺酸钠、4-甲基戊酸钠和色母粒,再次启动混料机混合物料,并加热至120~150℃,保温搅拌1~1.5小时后停机,将混合物料冷却至50~70℃,再次加入甲基异噻唑啉酮继续搅拌1~2小时;
(3)将步骤(2)中得到的混合物料冷却后送入造粒机中造粒,造粒完成后将得到的颗粒冷却后送入挤塑机的喂料室中,启动挤塑机,熔融挤出,并同步向挤塑机内注入发泡剂,进行挤塑成型。
优选地,步骤(3)中所述挤塑机分为一号双螺杆挤出机和二号单螺杆挤出机;其中,一号双螺杆挤出机分为12个工作区域,由进料口开始每个工作区域的温度依次设定为180~190℃、185~195℃、185~195℃、190~200℃、225~235℃、195~205℃、195~205℃、195~205℃、225~235℃、225~235℃、195~205℃和195~205℃;二号单螺杆挤出机分为9个工作区域,由进料端开始前七个和第九个工作区域的温度设定为175~185℃,第八个工作区域的温度设定为195~205℃。
优选地,所述一号双螺杆挤出机的螺杆转速为150~220rpm,二号单螺杆挤出机的螺杆转速为8~15rpm,二号单螺杆挤出机的料口压力为8~20MPa。
优选地,发泡剂于所述一号双螺杆挤出机的第6个工作区域注入。
优选地,步骤(3)中挤塑成型过程中所述挤塑机的上压板温度为60~100℃,下压板温度为60~100℃。
有益效果:(1)本发明的配方中使用融化温度较低一些的材料,同时在成核剂4-甲基戊酸钠内混入表面活性剂十二烷基苯磺酸钠和四聚丙烯苯磺酸钠,让板材泡孔比较均匀,同时表面光滑,不会较软脆性减小;(2)本发明提供的制备方法中选择适当混料温度和螺杆转速,减少螺杆转速与原料之间的剪切热,从而增加板材的密度;同时在低的螺杆转速条件下注入发泡剂,有助于生成闭合泡孔,减小泡孔密度,提高板材硬度,同时提高保温效果。
具体实施方式
下面通过实施例对本发明技术方案进行详细说明,但是本发明的保护范围不局限于所述实施例。
实施例1:一种环保增韧型聚苯乙烯保温挤塑板,包括以下组分:
各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。所述色母粒的载体为聚全氟乙丙烯。
上述的环保增韧型聚苯乙烯保温挤塑板的制备方法,包括如下步骤:
(1)将聚苯乙烯回收料和聚苯乙烯废料回收后混合造粒,与聚苯乙烯新料共同加入混料机中,再向混料机中加入过氧化苯甲酰丁酯、过氧化苯甲酰,启动混料机混合物料,并将混合物料加热至180℃,保温搅拌2小时后停机冷却;
(2)向混料机中加入十二烷基苯磺酸钠、四聚丙烯苯磺酸钠、4-甲基戊酸钠和色母粒,再次启动混料机混合物料,并加热至120℃,保温搅拌1小时后停机,将混合物料冷却至50℃,再次加入甲基异噻唑啉酮继续搅拌1小时;
(3)将步骤(2)中得到的混合物料冷却后送入造粒机中造粒,造粒完成后将得到的颗粒冷却后送入挤塑机的喂料室中,启动挤塑机,熔融挤出,并同步向挤塑机内注入发泡剂,进行挤塑成型;
所述挤塑机分为一号双螺杆挤出机和二号单螺杆挤出机;其中,一号双螺杆挤出机分为12个工作区域,由进料口开始每个工作区域的温度依次设定为180℃、185℃、185℃、190℃、225℃、195℃、195℃、195℃、225℃、225℃、195℃和195℃;二号单螺杆挤出机分为9个工作区域,由进料端开始前七个和第九个工作区域的温度设定为175℃,第八个工作区域的温度设定为195℃。挤塑成型过程中所述挤塑机的上压板温度为60℃,下压板温度为60℃。
实施例2:一种环保增韧型聚苯乙烯保温挤塑板,包括以下组分:
各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。所述色母粒的载体为聚全氟乙丙烯。
上述的环保增韧型聚苯乙烯保温挤塑板的制备方法,包括如下步骤:
(1)将聚苯乙烯回收料和聚苯乙烯废料回收后混合造粒,与聚苯乙烯新料共同加入混料机中,再向混料机中加入过氧化苯甲酰丁酯、过氧化苯甲酰,启动混料机混合物料,并将混合物料加热至240℃,保温搅拌4小时后停机冷却;
(2)向混料机中加入十二烷基苯磺酸钠、四聚丙烯苯磺酸钠、4-甲基戊酸钠和色母粒,再次启动混料机混合物料,并加热至150℃,保温搅拌1.5小时后停机,将混合物料冷却至70℃,再次加入甲基异噻唑啉酮继续搅拌2小时;
(3)将步骤(2)中得到的混合物料冷却后送入造粒机中造粒,造粒完成后将得到的颗粒冷却后送入挤塑机的喂料室中,启动挤塑机,熔融挤出,并同步向挤塑机内注入发泡剂,进行挤塑成型;
所述挤塑机分为一号双螺杆挤出机和二号单螺杆挤出机;其中,一号双螺杆挤出机分为12个工作区域,由进料口开始每个工作区域的温度依次设定为190℃、195℃、195℃、200℃、235℃、205℃、205℃、205℃、235℃、235℃、205℃和205℃;二号单螺杆挤出机分为9个工作区域,由进料端开始前七个和第九个工作区域的温度设定为185℃,第八个工作区域的温度设定为205℃。挤塑成型过程中所述挤塑机的上压板温度为100℃,下压板温度为100℃。
实施例3:一种环保增韧型聚苯乙烯保温挤塑板,包括以下组分:
各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。所述色母粒的载体为聚全氟乙丙烯。
上述的环保增韧型聚苯乙烯保温挤塑板的制备方法,包括如下步骤:
(1)将聚苯乙烯回收料和聚苯乙烯废料回收后混合造粒,与聚苯乙烯新料共同加入混料机中,再向混料机中加入过氧化苯甲酰丁酯、过氧化苯甲酰,启动混料机混合物料,并将混合物料加热至200℃,保温搅拌3小时后停机冷却;
(2)向混料机中加入十二烷基苯磺酸钠、四聚丙烯苯磺酸钠、4-甲基戊酸钠和色母粒,再次启动混料机混合物料,并加热至140℃,保温搅拌1.5小时后停机,将混合物料冷却至60℃,再次加入甲基异噻唑啉酮继续搅拌2小时;
(3)将步骤(2)中得到的混合物料冷却后送入造粒机中造粒,造粒完成后将得到的颗粒冷却后送入挤塑机的喂料室中,启动挤塑机,熔融挤出,并同步向挤塑机内注入发泡剂,进行挤塑成型;
所述挤塑机分为一号双螺杆挤出机和二号单螺杆挤出机;其中,一号双螺杆挤出机分为12个工作区域,由进料口开始每个工作区域的温度依次设定为185℃、190℃、190℃、195℃、230℃、200℃、200℃、200℃、230℃、230℃、200℃和200℃;二号单螺杆挤出机分为9个工作区域,由进料端开始前七个和第九个工作区域的温度设定为180℃,第八个工作区域的温度设定为200℃。挤塑成型过程中所述挤塑机的上压板温度为80℃,下压板温度为80℃。
采用本配方和方法得到的实施例1~3产品性能对比的数据见表1.
表1:实施例1~3产品与现有产品性能对比的数据
如上所述,尽管参照特定的优选实施例已经表示和表述了本发明,但其不得解释为对本发明自身的限制。在不脱离所附权利要求定义的本发明的精神和范围前提下,可对其在形式上和细节上作出各种变化。
Claims (8)
1.一种环保增韧型聚苯乙烯保温挤塑板,其特征在于包括以下组分:
各组分以重量份数计,其中聚苯乙烯颗粒为聚苯乙烯新料、聚苯乙烯回收料和聚苯乙烯废料混合组成,混合比例为2:1.5:1.5。
2.根据权利要求1所述的环保增韧型聚苯乙烯保温挤塑板,其特征在于包括以下组分:
3.根据权利要求1或2任一项所述的环保增韧型聚苯乙烯保温挤塑板,其特征在于,所述色母粒的载体为聚全氟乙丙烯。
4.一种权利要求1所述的环保增韧型聚苯乙烯保温挤塑板的制备方法,其特征在于包括如下步骤:
(1)将聚苯乙烯回收料和聚苯乙烯废料回收后混合造粒,与聚苯乙烯新料共同加入混料机中,再向混料机中加入过氧化苯甲酰丁酯、过氧化苯甲酰,启动混料机混合物料,并将混合物料加热至180~240℃,保温搅拌2~4小时后停机冷却;
(2)向混料机中加入十二烷基苯磺酸钠、四聚丙烯苯磺酸钠、4-甲基戊酸钠和色母粒,再次启动混料机混合物料,并加热至120~150℃,保温搅拌1~1.5小时后停机,将混合物料冷却至50~70℃,再次加入甲基异噻唑啉酮继续搅拌1~2小时;
(3)将步骤(2)中得到的混合物料冷却后送入造粒机中造粒,造粒完成后将得到的颗粒冷却后送入挤塑机的喂料室中,启动挤塑机,熔融挤出,并同步向挤塑机内注入发泡剂,进行挤塑成型。
5.根据权利要求4所述的环保增韧型聚苯乙烯保温挤塑板的制备方法,其特征在于,步骤(3)中所述挤塑机分为一号双螺杆挤出机和二号单螺杆挤出机;其中,一号双螺杆挤出机分为12个工作区域,由进料口开始每个工作区域的温度依次设定为180~190℃、185~195℃、185~195℃、190~200℃、225~235℃、195~205℃、195~205℃、195~205℃、225~235℃、225~235℃、195~205℃和195~205℃;二号单螺杆挤出机分为9个工作区域,由进料端开始前七个和第九个工作区域的温度设定为175~185℃,第八个工作区域的温度设定为195~205℃。
6.根据权利要求5所述的环保增韧型聚苯乙烯保温挤塑板的制备方法,其特征在于,所述一号双螺杆挤出机的螺杆转速为150~220rpm,二号单螺杆挤出机的螺杆转速为8~15rpm,二号单螺杆挤出机的料口压力为8~20MPa。
7.根据权利要求5所述的环保增韧型聚苯乙烯保温挤塑板的制备方法,其特征在于,发泡剂于所述一号双螺杆挤出机的第6个工作区域注入。
8.根据权利要求4所述的环保增韧型聚苯乙烯保温挤塑板的制备方法,其特征在于,步骤(3)中挤塑成型过程中所述挤塑机的上压板温度为60~100℃,下压板温度为60~100℃。
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