CN113845712A - 一种阻燃静音高层pe排水管及其制备方法 - Google Patents
一种阻燃静音高层pe排水管及其制备方法 Download PDFInfo
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Abstract
本发明属于高层建筑排水管领域,具体涉及一种阻燃静音高层PE排水管及其制备方法,本发明排水管包括PE阻燃内层、PE发泡中间层和外保护层三层结构,其中PE阻燃内层和外保护层的制备原料中均添加有阻燃剂,通过提高内外层的阻燃性能综合提升排水管的阻燃等级,使得本发明排水管的阻燃等级达V‑0级别;另外,PE发泡中间层以发泡级LDPE为主经发泡形成,有效提高排水管的降噪性能,能够将排水噪音降低32~34dB。
Description
技术领域
本发明属于高层建筑排水管领域,具体涉及一种阻燃静音高层PE排水管及其制备方法。
背景技术
现有排水管多以塑料排水管为主,如PVC(聚氯乙烯)管、PE(聚乙烯)管和PP(聚丙烯)管等,且以PVC管道为主,然而相对于PVC管道,PE管在实际应用过程中,具有更为优良性能,如抗腐蚀性、柔韧性和耐低温性,同时其还具有使用寿命长、生产能耗低、水流阻力小、易于安装和拆卸的优点,有望逐步取代PVC管道成为使用更广的管材。
然而,现有PE管材在作为给排水管使用时存在如下问题而限制了其推广应用:(1)PE管阻燃性能差;由于PE材料为易燃聚合物,使用PE材料制成的管材普遍存在阻燃性能差的缺陷,因此,为提高PE管作为高层建筑排水管时的使用安全性,有必要提高PE排水管的阻燃性能。(2)噪音大;建筑排水管道的噪声是由气动声传递和固动动声传递组合而成,即建筑排水管道中充满空气,排水时既有空气为介质的声波传递,又有因水和固体杂质流动时对管壁撞击造成管震动所形成的噪声,尤其是对于高层建筑给排水管,其给排水过程中产生的噪声是高层建筑室内的主要噪声来源之一,因此,有必要改善PE管在作为高层建筑给排水时的隔音性能。
如若降低塑料排水管道中的噪声,则要求塑料管的材质或结构应能吸收声波和管壁震动产生的噪声,现有为降低塑料管的给排水噪声,采用多层管结构,其中含有中间吸音层,中间吸音层通常采用无机填料如轻质碳酸钙、硫酸钡进行中间层填充,使得管道具有一定的隔音降噪性能,但由于管道中间层填充大量无机填料,管材总体增重明显,不利于运输和现场安装使用,尤其不适于作为高层建筑的给排水管道。
发明内容
本发明旨在提供一种阻燃静音高层PE排水管,具有优良的阻燃和隔音性能,同时质轻、力学性能优异,尤其适于作为高层建筑的给排水管;提供该阻燃静音高层PE排水管的制备方法作为本发明的另一个目的。
第一方面,本发明提供一种阻燃静音高层PE排水管,包括PE阻燃内层、PE发泡中间层和外保护层三层结构;
其中,PE阻燃内层由如下重量份的原料制备而成:高密度聚乙烯60~90份、抗氧剂0.1~1份、色母粒0.5~2份、阻燃母粒10~30份;
PE发泡中间层由如下重量份的原料制备而成:低密度聚乙烯91~97份、发泡剂1~3份、交联剂1~3份、抗氧剂0~1.7份;
外保护层由PVC树脂或阻燃EVA制备而成,所述阻燃EVA由EVA72~95重量份、阻燃剂5~28重量份复配而成。
本申请提供的阻燃静音高层PE排水管由内外实壁层和中间发泡层组成,其内外实壁层中均复配有阻燃成分,使得管材整体具备阻燃性能;本申请中间发泡层由低密度聚乙烯经发泡形成,使得管材具有良好的隔音降噪性能。
进一步地,PE阻燃内层的厚度为3~20mm,PE发泡中间层的厚度为10~40mm,外保护层的厚度为2~6mm。
进一步地,EVA为醋酸乙烯酯含量为1%~15%的EVA树脂。
由不同VA含量的EVA制成的外保护层的阻燃性能不同,由VA含量为1%~15%的EVA制得的外保护层具备相对较优的阻燃性能。
进一步地,高密度聚乙烯为PE80级或PE100级的高密度聚乙烯;所述低密度聚乙烯为发泡级低密度聚乙烯。
进一步地,所述阻燃母粒由如下重量份的原料经混合、熔融共混、造粒制得:
高密度聚乙烯45~71份、抗氧剂0.5~1份、润滑剂0.2~1.5份、主阻燃剂20~40份、辅阻燃剂0~14份;
所述润滑剂为脂肪酰胺类润滑剂、金属皂类润滑剂、脂肪酸及酯类润滑剂、烃类润滑剂或有机硅化合物润滑剂;
所述主阻燃剂为无卤阻燃剂和/或卤系阻燃剂,所述卤系阻燃剂为十溴二苯乙烷、六溴环十二烷、四溴双酚A、八溴醚中的一种或多种;
所述辅阻燃剂为三氧化二锑。
进一步地,所述发泡剂为偶氮二甲酰胺和/或对甲苯磺酰氨基脲与助剂的混合物,所述助剂为NaHCO3、ZnO、硬脂酸锌中的一种或多种混合物。
进一步地,所述交联剂为过氧化二异丙苯、1,2-二乙烯基苯、过氧化乙炔、过氧化环己烷中的一种或多种混合物。
第二方面,本发明提供上述阻燃静音高层PE排水管的制备方法,包括如下步骤:
S1:PE阻燃内层的挤出成型
将PE阻燃内层的制备原料高密度聚乙烯、抗氧剂、色母粒和阻燃母粒于170℃~210℃熔融共混后挤入三层复合共挤模具的最内层形成熔融料坯,熔融料坯经定径套真空冷却定型,形成PE阻燃内层;
S2:PE发泡中间层和外保护层的挤出成型
将PE发泡中间层的制备原料于140℃~185℃熔融共混后挤入三层复合共挤膜具的中间层,经释压发泡成型,形成黏附于PE阻燃内层外壁的PE发泡中间层;将外保护层的制备原料于140℃~185℃熔融共混后挤入三层复合共挤模具的最外层,与PE发泡中间层制备原料同时挤出,于PE发泡中间层的外壁形成一层与之粘附的外保护层;经冷却定型制得本发明阻燃静音高层PE排水管。
通过上述制备方法将PE阻燃内层、PE发泡中间层和外保护层一体成型,使得本申请排水管的三层结构紧密固定,具备优良的力学性能,使得排水管的抗拉伸屈服强度高达27MPa。
进一步地,阻燃母粒由高密度聚乙烯、抗氧剂、润滑剂、主阻燃剂、辅阻燃剂于160℃~190℃熔融共混、挤出造粒制得。
与现有技术相比,本发明的有益效果如下:
本发明排水管包括PE阻燃内层、PE发泡中间层和外保护层三层结构,其中PE阻燃内层和外保护层的制备原料中均添加有阻燃剂,通过提高内外层的阻燃性能综合提升排水管的阻燃等级,使得本发明排水管的阻燃等级达V-0级别;另外,PE发泡中间层以发泡级LDPE为主经发泡形成,有效提高排水管的降噪性能,能够将排水噪音降低26~34dB。
附图说明
图1为本发明管道径向截面示意图。
图中:1、PE阻燃内层;2、PE发泡中间层;3、外保护层。
具体实施方式
为更好地说明本发明的目的、技术方案和优点,下面将结合具体实施例对本发明作进一步说明。本领域技术人员应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。
实施例中所用的试验方法如无特殊说明,均为常规方法;所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
实施例1
本实施例提供一种阻燃静音高层PE排水管,如图1所示,包括PE阻燃内层1、PE发泡中间层2和外保护层3三层结构,PE阻燃内层1的厚度为3mm,PE发泡中间层2的厚度为10mm,外保护层3的厚度为2.5mm。
PE阻燃内层1由如下重量份的原料制备而成:高密度聚乙烯100级75份、抗氧剂1010 0.5份、黑色母粒1.5份、阻燃母粒23份。
其中,阻燃母粒由如下重量份的原料制成:高密度聚乙烯(HDPE)100级70.7份、抗氧剂0.8份、硬脂酸类润滑剂0.5份、主阻燃剂21份、辅阻燃剂7份,其中抗氧剂由抗氧剂1010与抗氧剂168按照重量比2:1复配而成,主阻燃剂为十溴二苯乙烷,辅阻燃剂为三氧化二锑。将阻燃母粒制备原料用搅拌机搅拌混合30min后,投料至平行双螺杆挤出机,下料口至机头的熔融温度分布在160℃~190℃,经熔融、剪切共混挤出造粒制得阻燃母粒。
PE发泡中间层2由如下重量份的原料制备而成:发泡级低密度聚乙烯92份、发泡剂偶氮二甲酰胺2.2份、交联剂过氧化二异丙苯1.3份、NaHCO30.1份抗氧剂1010 1份。
外保护层3由阻燃EVA制备而成,阻燃EVA由VA含量为10%的EVA76重量份、阻燃剂十溴二苯乙烷18重量份、阻燃剂三氧化二锑6重量份复配而成。
上述阻燃静音高层PE排水管的制备方法如下:
将PE阻燃内层1原料用立式混料机混合35min,投料至单螺杆挤出机中,挤出机下料段至模具的熔融温度分布在170℃~210℃之间,挤出模具的熔融料坯经定径套真空冷却定型,进入中间层和外层的复合共挤模具中,制得PE阻燃内层管。
将PE发泡中间层2的原料于搅拌机中搅拌25min至混合均匀,送料至单螺杆挤出机,挤出机下料段至模具的熔融温度分布在140℃~185℃之间,LDPE与发泡剂、交联剂、抗氧剂等在挤塑料筒内完成塑化、混合、发泡剂分解,发泡料进入三层复合共挤模头中释压发泡成型粘附在PE阻燃内层管的外壁上,制得PE发泡中间层2。
将外保护层3的原料于搅拌机中搅拌33min至混合均匀,送料至挤出机,原料经挤出机熔融塑化进入三层复合共挤模头,外保护层与PE发泡中间层同时挤出,并且外保护层粘附于PE发泡中间层的外壁,经冷却定型制得具有三层结构的阻燃静音高层PE排水管。
实施例2
本实施例提供一种阻燃静音高层PE排水管,包括PE阻燃内层、PE发泡中间层和外保护层三层结构,PE阻燃内层的厚度为5mm,PE发泡中间层的厚度为16mm,外保护层的厚度为3mm。
PE阻燃内层由如下重量份的原料制备而成:高密度聚乙烯80级72.8份、抗氧剂1010 0.4份、灰色母粒1.8份、阻燃母粒25份。
其中,阻燃母粒由如下重量份的原料制成:高密度聚乙烯(HDPE)80级66.5份、抗氧剂0.5份、聚乙烯蜡1.0份、主阻燃剂六溴环十二烷24份、辅阻燃剂三氧化二锑8份,其中抗氧剂由抗氧剂1010与抗氧剂168按照重量比2:1复配而成。将阻燃母粒制备原料用搅拌机搅拌混合35min后,投料至平行双螺杆挤出机,下料口至机头的熔融温度分布在160℃~190℃,经熔融、剪切共混挤出造粒制得阻燃母粒。
PE发泡中间层由如下重量份的原料制备而成:发泡级低密度聚乙烯94.5份、发泡剂偶氮二甲酰胺2.5份、交联剂1,2二乙烯基苯1.5份、硬脂酸锌0.25份抗氧剂1010 1.5份。
外保护层由阻燃EVA制备而成,阻燃EVA由VA含量为12%的EVA72重量份、阻燃剂十溴二苯乙烷21重量份、阻燃剂三氧化二锑7重量份复配而成。
上述阻燃静音高层PE排水管的制备方法如下:
将PE阻燃内层原料用立式混料机混合32min,投料至单螺杆挤出机中,挤出机下料段至模具的熔融温度分布在175℃~205℃之间,挤出模具的熔融料坯经定径套真空冷却定型,进入中间层和外层的复合共挤模具中,制得PE阻燃内层管。
将PE发泡中间层的原料于搅拌机中搅拌28min至混合均匀,送料至单螺杆挤出机,挤出机下料段至模具的熔融温度分布在145℃~185℃之间,LDPE与发泡剂、交联剂、抗氧剂等在挤塑料筒内完成塑化、混合、发泡剂分解,发泡料进入三层复合共挤模头中释压发泡成型粘附在PE阻燃内层管的外壁上,制得PE发泡中间层。
将外保护层的原料于搅拌机中搅拌36min至混合均匀,送料至挤出机,原料经挤出机熔融塑化进入三层复合共挤模头,外保护层与PE发泡中间层同时挤出,并且外保护层粘附于PE发泡中间层的外壁,经冷却定型制得具有三层结构的阻燃静音高层PE排水管。
实施例3
本实施例提供一种阻燃静音高层PE排水管,包括PE阻燃内层、PE发泡中间层和外保护层三层结构,PE阻燃内层的厚度为9.6mm,PE发泡中间层的厚度为24mm,外保护层的厚度为4.2mm。
PE阻燃内层由如下重量份的原料制备而成:高密度聚乙烯100级67.6份、抗氧剂1010 0.4份、黑色母粒2份、阻燃母粒30份。
其中,阻燃母粒由如下重量份的原料制成:高密度聚乙烯(HDPE)100级62.3份、抗氧剂0.5份、硬脂酸类润滑剂1.2份、主阻燃剂十溴二苯乙烷27份、辅阻燃剂三氧化二锑9份,其中抗氧剂由抗氧剂1010与抗氧剂168按照重量比2:1复配而成。将阻燃母粒制备原料用搅拌机搅拌混合36min后,投料至平行双螺杆挤出机,下料口至机头的熔融温度分布在160℃~190℃,经熔融、剪切共混挤出造粒制得阻燃母粒。
PE发泡中间层由如下重量份的原料制备而成:发泡级低密度聚乙烯96份、发泡剂对甲苯磺酰氨基脲类2.8份、交联剂过氧化二异丙苯1.6份、NaHCO3 0.15份、ZnO 0.07份、抗氧剂1010 1.7份。
外保护层由SG-5型号PVC树脂粉制成。
上述阻燃静音高层PE排水管的制备方法如下:
将PE阻燃内层原料用立式混料机混合38min,投料至单螺杆挤出机中,挤出机下料段至模具的熔融温度分布在170℃~220℃之间,挤出模具的熔融料坯经定径套真空冷却定型,进入中间层和外层的复合共挤模具中,制得PE阻燃内层管。
将PE发泡中间层的原料于搅拌机中搅拌28min至混合均匀,送料至单螺杆挤出机,挤出机下料段至模具的熔融温度分布在140℃~185℃之间,LDPE与发泡剂、交联剂、抗氧剂等在挤塑料筒内完成塑化、混合、发泡剂分解,发泡料进入三层复合共挤模头中释压发泡成型粘附在PE阻燃内层管的外壁上,制得PE发泡中间层。
将外保护层的原料PVC树脂粉送料至挤出机,原料经挤出机熔融塑化进入三层复合共挤模头,外保护层与PE发泡中间层同时挤出,并且外保护层粘附于PE发泡中间层的外壁,经冷却定型制得具有三层结构的阻燃静音高层PE排水管。
实施例4
本实施例提供一种阻燃静音高层PE排水管,其与实施例3的区别仅在于PE发泡中间层和外保护层的制备原料组成不同。
本实施例中PE发泡中间层由如下重量份的原料制得:发泡级LDPE 96份、发泡剂对甲苯磺酰氨基脲类2.8份、交联剂过氧化二异丙苯1.6份、NaHCO3 0.15份、ZnO 0.07份、抗氧剂1010 1.7份。
本实施例中外保护层由如下重量份的原料制得:VA含量为15%的EVA 76份、阻燃剂十溴二苯乙烷18份、阻燃剂三氧化二锑6份。
实施例5
本实施例提供一种阻燃静音高层PE排水管,其与实施例3的区别仅在于PE发泡中间层和外保护层的制备原料不同。
本实施例中PE发泡中间层由如下重量份的原料制得:发泡级LDPE 96份、发泡剂对甲苯磺酰氨基脲类2.8份、交联剂过氧化二异丙苯1.6份、NaHCO3 0.15份、ZnO 0.07份、抗氧剂1010 1.7份。
本实施例中外保护层由如下重量份的原料制得:VA含量为15%的EVA 72份、阻燃剂十溴二苯乙烷21份、阻燃剂三氧化二锑7份。
实施例6
本实施例提供一种阻燃静音高层PE排水管,其与实施例3的区别仅在于外保护层的制备原料不同,本实施例外保护层的制备原料为SG-4型号的PVC树脂粉。
上述实施例1~6的机械性能参照标准GB/T1040.2-2006《塑料拉伸性能的测定第2部分:模塑和挤塑塑料的试验条件》、降噪性能参照GB/T312-2009《建筑排水管道系统噪音测试(结构声)》以及阻燃性能参照UL94阻燃等级测量方法进行检测;结果如表1所示。
表1实施例1~6排水管的机械性能、阻燃性能及降噪性能检测结果
由表1可知,本发明实施例提供的阻燃静音高层PE排水管具有抗拉伸能力强,实施例2-5降噪性能更加优异;实施例1-6阻燃性能至少达到V-1级,阻燃性能效果,提高主阻燃剂和阻燃剂含量可使管材阻燃性能达到V-0级。
最后所应当说明的是,以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的实质和范围。
Claims (9)
1.一种阻燃静音高层PE排水管,其特征在于,所述排水管包括PE阻燃内层、PE发泡中间层和外保护层三层结构;
所述PE阻燃内层由如下重量份的原料制备而成:高密度聚乙烯60~90份、抗氧剂0.1~1份、色母粒0.5~2份、阻燃母粒10~30份;
所述PE发泡中间层由如下重量份的原料制备而成:低密度聚乙烯91~97份、发泡剂1~3份、交联剂1~3份、抗氧剂0~1.7份;
所述外保护层由PVC树脂或阻燃EVA制备而成,所述阻燃EVA由EVA72~95重量份、阻燃剂5~28重量份复配而成。
2.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述PE阻燃内层的厚度为3~20mm,PE发泡中间层的厚度为10~40mm,外保护层的厚度为2~6mm。
3.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述EVA为醋酸乙烯酯含量为1%~15%的EVA树脂。
4.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述高密度聚乙烯为PE80级或PE100级的高密度聚乙烯;所述低密度聚乙烯为发泡级低密度聚乙烯。
5.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述阻燃母粒由如下重量份的原料经混合、熔融共混、造粒制得:
高密度聚乙烯45~71份、抗氧剂0.5~1份、润滑剂0.2~1.5份、主阻燃剂20~40份、辅阻燃剂0~14份;
所述润滑剂为脂肪酰胺类润滑剂、金属皂类润滑剂、脂肪酸及酯类润滑剂、烃类润滑剂或有机硅化合物润滑剂;
所述主阻燃剂为无卤阻燃剂和/或卤系阻燃剂,所述卤系阻燃剂为十溴二苯乙烷、六溴环十二烷、四溴双酚A、八溴醚中的一种或多种;
所述辅阻燃剂为三氧化二锑。
6.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述发泡剂为偶氮二甲酰胺和/或对甲苯磺酰氨基脲与助剂的混合物,所述助剂为NaHCO3、ZnO、硬脂酸锌中的一种或多种混合物。
7.根据权利要求1所述阻燃静音高层PE排水管,其特征在于,所述交联剂为过氧化二异丙苯、1,2-二乙烯基苯、过氧化乙炔、过氧化环己烷中的一种或多种混合物。
8.权利要求1~7任一项所述阻燃静音高层PE排水管的制备方法,其特征在于,包括如下步骤:
S1:PE阻燃内层的挤出成型
将PE阻燃内层的制备原料高密度聚乙烯、抗氧剂、色母粒和阻燃母粒于170℃~210℃熔融共混后挤入三层复合共挤模具的最内层形成熔融料坯,熔融料坯经定径套真空冷却定型,形成PE阻燃内层;
S2:PE发泡中间层和外保护层的挤出成型
将PE发泡中间层的制备原料于140℃~185℃熔融共混后挤入三层复合共挤膜具的中间层,经释压发泡成型,形成黏附于PE阻燃内层外壁的PE发泡中间层;将外保护层的制备原料于140℃~185℃熔融共混后挤入三层复合共挤模具的最外层,与PE发泡中间层制备原料同时挤出,于PE发泡中间层的外壁形成一层与之粘附的外保护层;经冷却定型制得本发明阻燃静音高层PE排水管。
9.根据权利要求8所述阻燃静音高层PE排水管的制备方法,其特征在于,所述阻燃母粒由高密度聚乙烯、抗氧剂、润滑剂、主阻燃剂、辅阻燃剂于160℃~190℃熔融共混、挤出造粒制得。
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