CN104672609A - 一种阻燃增韧聚丙烯音箱材料 - Google Patents
一种阻燃增韧聚丙烯音箱材料 Download PDFInfo
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Abstract
本发明公开一种阻燃增韧聚丙烯音箱材料,其特征在于,该材料由以下重量份的各原料制备而成:聚丙烯100份,C600.5-2份,纳米双羟基复合金属氧化物与聚磷酸铵的复配物20-40份,马来酸酐接枝聚丙烯共聚物1-6份,纳米碳化硅1-5份,滑石粉1-10份。本发明具有阻燃性能好,且韧性高、强度强的优点。
Description
技术领域
本发明涉及聚丙烯阻燃材料技术领域,具体涉及一种阻燃增韧聚丙烯音箱材料。
背景技术
聚丙烯,是一种质量轻、无毒、便于加工,力学性能优异,耐化学腐蚀的优点;因此,被广泛应用于生活的各个领域;特别是随着科技水平的不断提升,很多大型的音箱的制作也多采用聚丙烯作为基础材料;但是,音箱往往应用于包厢、大型歌舞会现场等场合,现场观众众多,因此阻燃性能尤为重要。
早期的聚丙烯材料采用添加卤族元素进行阻燃,但是卤族元素在燃烧时产生大量的有毒有害气体,造成严重的“二次污染”,因此早在在2003年欧盟就已禁止了部分溴系阻燃剂的使用。另外一种阻燃剂为膨胀型阻燃剂,如三氯氧磷、五氧化二磷等作为合成原料,但是其具有腐蚀性强,不易腐蚀等缺陷。而音箱的使用多要求必须要安全、环保,且不易燃烧,因此,急需开发一种适合音箱材料的聚丙烯阻燃材料。
发明内容
本发明针对现有技术的上述不足,提供一种阻燃性能好,且韧性高、强度强的阻燃增韧聚丙烯音箱材料。
为了解决上述技术问题,本发明采用的技术方案为:一种阻燃增韧聚丙烯音箱材料,该材料由以下重量份的各原料制备而成:聚丙烯100份,C600.5-2份,纳米双羟基复合金属氧化物与聚磷酸铵(APP)的复配物20-40份,马来酸酐接枝聚丙烯共聚物1-6份,纳米碳化硅1-5份,滑石粉1-10份。
本发明所述的纳米双羟基复合金属氧化物为LDH1(Mg8Al2(OH)20CO3·7H2O)或LDH2(Mg4Al2(OH)12CO3·3H2O),其粒径为40-60nm。
本发明所述的滑石粉为平均粒径D502.5~5微米。
本发明纳米双羟基复合金属氧化物与聚磷酸铵的重量配比为1:1-15。
本发明还提供一种上述阻燃增韧聚丙烯音箱材料的制备方法,制备步骤为:(1)按照配方比例称取各原料,将原料加入到高速混合机中预混1-10分钟,高速混合机的转速为300-460r/min,混合温度为50-80℃;(2)将混合好的原料放入双螺杆挤出机中,双螺杆挤出机加料区温度120-145℃,熔融区温度220-260℃,挤出口模温度201-220℃,螺杆转速为200-400r/min,经螺杆的剪切、混炼使得各种原料分散、熔融,造粒即可。本发明的优点和有益效果:
1.本发明使用的阻燃剂为非卤素类阻燃剂,具有毒性小,安全环保的优点。如C60的使用,其在聚丙烯基体中能够均匀分散,低含量的加入就能有效提高材料的热稳定性,并有效降低材料的热释放速率峰,能提高聚丙烯抗热氧化降解能力。而纳米双羟基复合金属氧化物与聚磷酸铵的复配物的加入,其中的纳米双羟基复合金属氧化物具有大的比表面积,同时具有较强的碱性催化作用,有效发挥凝缩相膨胀阻燃的作用,且纳米双羟基复合金属氧化物分解后的碱性,具有更好的协调膨胀阻燃效果,且LDH在热降解过程中促进了APP分子间的交联,使得APP的残炭量增加,相互匹配获得非常好的阻燃效果。
2.本发明采用纳米级碳化硅,增加了材料的整体强度,同时也可以使得其在PP基体中分散的更加均匀,有效防止团聚现象的发生。而且和滑石粉同时使用,具有耐火性强,熔点高的优点,有效的提高材料整体的阻燃性能。
3.本发明的制备方法,从先低温混合,在高温熔融挤出,并严格控制各区间的温度变化,使得制备的产品性能根据优异。
具体实施方式
下面通过具体实施方式对本发明作进一步详细地说明,但不仅限于以下实施例。
实施例1
称取原料:聚丙烯100份,C60(如苏州恒球石墨烯科技有限公司生产的富勒烯C60)0.5份,纳米双羟基复合金属氧化物与聚磷酸铵(APP)的复配物25份,马来酸酐接枝聚丙烯共聚物2份,纳米碳化硅2份,滑石粉5份。
其中纳米双羟基复合金属氧化物为LDH1(Mg8Al2(OH)20CO3·7H2O),其粒径为50nm,纳米双羟基复合金属氧化物与聚磷酸铵的重量配比为1:5。
具体的制备步骤为:(1)按照配方比例称取各原料,将原料加入到高速混合机中预混8分钟,高速混合机的转速为400r/min,混合温度为60-65℃;(2)将混合好的原料放入双螺杆挤出机中,双螺杆挤出机加料区温度140℃,熔融区温度255℃,挤出口模温度210℃,螺杆转速为300r/min,经螺杆的剪切、混炼使得各种原料分散、熔融,造粒即可。
实施例2
称取原料:聚丙烯100份,C601份,纳米双羟基复合金属氧化物与聚磷酸铵(APP)的复配物30份,马来酸酐接枝聚丙烯共聚物5份,纳米碳化硅3份,滑石粉8份;
其中纳米双羟基复合金属氧化物为LDH2(Mg8Al2(OH)20CO3·7H2O),其粒径为50nm,纳米双羟基复合金属氧化物与聚磷酸铵的重量配比为1:10。
制备步骤同实施例1。
实施例3
称取原料:聚丙烯100份,C602份,纳米双羟基复合金属氧化物与聚磷酸铵(APP)的复配物35份,马来酸酐接枝聚丙烯共聚物6份,纳米碳化硅4份,滑石粉8份;
其中纳米双羟基复合金属氧化物为LDH2(Mg8Al2(OH)20CO3·7H2O),其粒径为50nm,纳米双羟基复合金属氧化物与聚磷酸铵的重量配比为1:12。
制备步骤同实施例1。
表1.各实施例的相关性能
直观的实验:取材料制成厚度为2cm的板材,取板材横截面,用2.5kg铁球距离板材横截面80cm高自由落体下落,砸到横截面上,不变形、不破裂;却1cm*1cm材料小块,打火机灼烧,5s内能自动熄灭,通过上述表1和直观实验,可以得出,本发明的材料具有强度高、韧性强,不易燃烧,阻燃性能好的优点。
Claims (4)
1.一种阻燃增韧聚丙烯音箱材料,其特征在于,该材料由以下重量份的各原料制备而成:聚丙烯100份,C60 0.5-2份,纳米双羟基复合金属氧化物与聚磷酸铵的复配物20-40份,马来酸酐接枝聚丙烯共聚物1-6份,纳米碳化硅1-5份,滑石粉1-10份;上述材料的制备方法为:(1)按照配方比例称取各原料,将原料加入到高速混合机中预混1-10分钟,高速混合机的转速为300-460r/min,混合温度为50-80℃;(2)将混合好的原料放入双螺杆挤出机中,双螺杆挤出机加料区温度120-145℃,熔融区温度220-260℃,挤出口模温度201-220℃,螺杆转速为200-400r/min,经螺杆的剪切、混炼使得各种原料分散、熔融,造粒即可。
2.根据权利要求1所述的阻燃增韧聚丙烯音箱材料,其特征在于,所述的纳米双羟基复合金属氧化物为LDH1(Mg8Al2(OH)20CO3·7H2O)或LDH2(Mg4Al2(OH)12CO3·3H2O),其粒径为40-60nm。
3.根据权利要求1所述的阻燃增韧聚丙烯音箱材料,其特征在于,所述的滑石粉为平均粒径D50 2.5~5微米。
4.根据权利要求1所述的阻燃增韧聚丙烯音箱材料,其特征在于,所述的纳米双羟基复合金属氧化物与聚磷酸铵的重量配比为1:1-15。
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CN109679208B (zh) * | 2018-12-14 | 2021-06-25 | 金旸(厦门)新材料科技有限公司 | 一种环保高效阻燃聚丙烯复合物及其制备方法 |
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