CN112876784B - 一种耐磨pvc给水管及加工工艺 - Google Patents
一种耐磨pvc给水管及加工工艺 Download PDFInfo
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Abstract
本发明公开了一种耐磨PVC给水管,S1,准备原材料:SG‑5型PVC树脂、稀土复合稳定剂、丙稀酸脂类高分子共聚物、氯化聚乙烯、活性轻钙、钛白、PE蜡、发泡剂;S2,将原材料分为A、B两份;S3,将A份原材料投入第一高速混合机中进行热混,然后冷混,并由第一挤出机基础成型,得到内层管;S4,将B份原材料投入第二高速混合机中进行热混,然后冷混,并由第二挤出机基础成型;S5,内层管的外壁喷涂发泡剂,并穿过第二挤出机的成型口处,冷却成型,本发明涉及PVC给水管技术领域。本发明,解决了PVC给水管在天气寒冷的冬天经常会遇到水管内结冻、水管冻裂的情况,而且传统PVC给水管噪音大,给室内造成噪音污染,同时传统PVC给水管强度不高、耐压性差的问题。
Description
技术领域
本发明涉及PVC给水管技术领域,特别是涉及一种耐磨PVC给水管及加工工艺。
背景技术
PVC给水管是以卫生级聚氯乙烯树脂为主要原料,添加定量的稳定剂、润滑剂、填充剂、增色剂等,经塑料挤出机挤出成型和注塑机注塑成型,通过冷却、固化、定型、检验、包装等工序生产出的一种给水用管材。
PVC给水管道所示的压力均表示为公称压力,用Mpa表示,1Mpa≈10kgf/cm2即管材在20℃条件下,输送介质的工作压力。但随着介质的温度的升高(不得输送>50℃的介质)工作压力随之减小,这从客观上在选择给水管道须考虑足够的压力的安全系数;给水管材的公称压力规定为:0.6Mpa、0.8Mpa、1.0Mpa、1.25Mpa、1.6Mpa等5种;同等规格管材的公称压力的大小一般以管材的壁厚来划分;每个压力区的最小口径的管材规定为:0.6Mpa管材的最小口径为63mm,0.8Mpa管材的最小口径为50mm,1.0Mpa管材的最小口径为40mm,1.25Mpa管材的最小口径为32mm,1.6Mpa管材的最小口径为20mm和25mm;给水管材的公称压力一般为1.6Mpa,且与各种压力的管材相配套。
现有技术中,PVC给水管在天气寒冷的冬天经常会遇到水管内结冻、水管冻裂的情况,而且传统PVC给水管噪音大,给室内造成噪音污染,同时传统PVC给水管强度不高、耐压性差。
发明内容
为了解决PVC给水管在天气寒冷的冬天经常会遇到水管内结冻、水管冻裂的情况,而且传统PVC给水管噪音大,给室内造成噪音污染,同时传统PVC给水管强度不高、耐压性差的问题,本发明的目的是提供一种耐磨PVC给水管及加工工艺。
为了实现上述目的,本发明采用如下技术方案:一种耐磨PVC给水管,按重量分配比包括有以下组分:
SG-5型PVC树脂90-110份、稀土复合稳定剂3-8份、丙稀酸脂类高分子共聚物1-5份、氯化聚乙烯5-15份、活性轻钙5-12份、钛白2-8份、PE蜡0.1-0.6份、发泡剂2-5份。
优选的,按重量分配比包括有以下组分:
SG-5型PVC树脂91份、稀土复合稳定剂4份、丙稀酸脂类高分子共聚物2份、氯化聚乙烯6份、活性轻钙6份、钛白3份、PE蜡0.2份、发泡剂3份。
优选的,按重量分配比包括有以下组分:
SG-5型PVC树脂90-110份、稀土复合稳定剂5份、丙稀酸脂类高分子共聚物3份、氯化聚乙烯9份、活性轻钙8份、钛白4份、PE蜡0.4份、发泡剂3.8份。
优选的,按重量分配比包括有以下组分:
SG-5型PVC树脂108份、稀土复合稳定剂7份、丙稀酸脂类高分子共聚物4份、氯化聚乙烯13份、活性轻钙11份、钛白7份、PE蜡0.5份、发泡剂4.5份。
一种耐磨PVC给水管加工工艺,包括有以下步骤:
S1,准备原材料:SG-5型PVC树脂、稀土复合稳定剂、丙稀酸脂类高分子共聚物、氯化聚乙烯、活性轻钙、钛白、PE蜡、发泡剂;
S2,将原材料分为A、B两份;
S3,将A份原材料投入第一高速混合机中进行热混,然后冷混,并由第一挤出机基础成型,得到内层管;
S4,将B份原材料投入第二高速混合机中进行热混,然后冷混,并由第二挤出机基础成型,得到外层管;
S5,内层管的外壁喷涂发泡剂,并穿过第二挤出机的成型口处,冷却成型得到隔音保温PVC供水管。
优选的,所述S2中,A和B份的组分以及比例,A/B:SG-5型PVC树脂4/1、稀土复合稳定剂5/2、丙稀酸脂类高分子共聚物6/1、氯化聚乙烯7/3、活性轻钙8/3、钛白5/2、PE蜡7/4。
优选的,所述S3中,第一挤出机挤出PVC管温度控制范围:供料段100-140℃、压缩段150-180℃、计量段160-180℃、分流器170-185℃、模口170-185℃。
优选的,所述S4中,第二挤出机PVC管温度控制范围:供料段90-120℃、压缩段120-140℃、计量段140-160℃、分流器135-155℃、模口150-165℃。
与现有技术相比,本发明实现的有益效果:本发明,采用双层管结构,制得的耐磨PVC给水管强度高,耐压性强;本发明,通过对双层管之间填充发泡剂,使得制得的耐磨PVC给水管具有很好的隔音效果,同时使得该耐磨PVC给水管耐冻,具有很好的保温性能。
附图说明
以下结合附图和具体实施方式来进一步详细说明本发明:
图1为本发明的加工工艺的示意图;
图2为本发明的耐磨PVC给水管剖面的结构示意图。
具体实施方式
以下由特定的具体实施例说明本发明的实施方式,熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
请参阅图1至图2。须知,本说明书所附图式所绘示的结构、比例、大小等,均仅用以配合说明书所揭示的内容,以供熟悉此技术的人士了解与阅读,并非用以限定本发明可实施的限定条件,故不具技术上的实质意义,任何结构的修饰、比例关系的改变或大小的调整,在不影响本发明所能产生的功效及所能达成的目的下,均应仍落在本发明所揭示的技术内容得能涵盖的范围内。同时,本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语,亦仅为便于叙述的明了,而非用以限定本发明可实施的范围,其相对关系的改变或调整,在无实质变更技术内容下,当亦视为本发明可实施的范畴。
实施例1:
一种耐磨PVC给水管,按重量分配比包括有以下组分:
SG-5型PVC树脂91份、稀土复合稳定剂4份、丙稀酸脂类高分子共聚物2.5份、氯化聚乙烯7份、活性轻钙7.5份、钛白4份、PE蜡0.3份、发泡剂3.5份。
实施例2:
一种耐磨PVC给水管,按重量分配比包括有以下组分:
SG-5型PVC树脂103份、稀土复合稳定剂5.5份、丙稀酸脂类高分子共聚物4.5份、氯化聚乙烯11份、活性轻钙8份、钛白4.5份、PE蜡0.5份、发泡剂4份。
实施例3:
一种耐磨PVC给水管,按重量分配比包括有以下组分:
SG-5型PVC树脂108份、稀土复合稳定剂7.5份、丙稀酸脂类高分子共聚物4份、氯化聚乙烯13份、活性轻钙10份、钛6份、PE蜡0.5份、发泡剂4.5份。
实施例4:
一种耐磨PVC给水管加工工艺,包括有以下步骤:
S1,准备原材料:SG-5型PVC树脂、稀土复合稳定剂、丙稀酸脂类高分子共聚物、氯化聚乙烯、活性轻钙、钛白、PE蜡、发泡剂;
S2,将原材料分为A、B两份;
S3,将A份原材料投入第一高速混合机中进行热混,然后冷混,并由第一挤出机基础成型,得到内层管;
S4,将B份原材料投入第二高速混合机中进行热混,然后冷混,并由第二挤出机基础成型,得到外层管;
S5,内层管的外壁喷涂发泡剂,并穿过第二挤出机的成型口处,冷却成型得到隔音保温PVC供水管,如图2。
所述S2中,A和B份的组分以及比例,A/B:SG-5型PVC树脂4/1、稀土复合稳定剂5/2、丙稀酸脂类高分子共聚物6/1、氯化聚乙烯7/3、活性轻钙8/3、钛白5/2、PE蜡7/4。
所述S3中,第一挤出机挤出PVC管温度控制范围:供料段100-140℃、压缩段150-180℃、计量段160-180℃、分流器170-185℃、模口170-185℃。
所述S4中,第二挤出机PVC管温度控制范围:供料段90-120℃、压缩段120-140℃、计量段140-160℃、分流器135-155℃、模口150-165℃。
实施例5:
从市场采集多个PVC样管B、C、D、E、F、G和实施例4中的样品A,并对其进行压力试验:将PVC样管一端使用堵头堵上,另一端连接打压泵进行打压,打压后保压15min,试验结果如下表:
由上表得知,本发明制得的耐磨PVC给水管强度高,耐压性强。
实施例6:
对B、C、D、E、F、G和实施例4中的样品A进行保温性能测试,给水管的一端连接控制阀,另一端连接供水管,并将该测试管段置于不同温度环境下6h,然后打开控制阀,观察控制阀是否出水,试验结果如下表:
温度℃ | 0 | -2 | -4 | -6 | -7 | -8 | -9 |
A | 正常 | 正常 | 正常 | 正常 | 正常 | 正常 | 正常 |
B | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 | 堵塞 | 堵塞 |
C | 正常 | 正常 | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 |
D | 正常 | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 | 堵塞 |
E | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 | 堵塞 | 堵塞 |
F | 正常 | 正常 | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 |
G | 正常 | 正常 | 正常 | 正常 | 堵塞 | 堵塞 | 堵塞 |
由上表得知,本发明制得的耐磨PVC给水管耐冻,具有很好的保温性能。
对B、C、D、E、F、G和实施例4中的样品A进行隔音性能测试,将样品段置于隔音室内,隔音室内放置分贝测试仪,一端连接供水管,另一端直接排水,测试结果如下表:
样品 | 测试分贝 |
A | 12 |
B | 22 |
C | 30 |
D | 25 |
E | 28 |
F | 35 |
G | 33 |
由上表得知,本发明,通过对双层管之间填充发泡剂,使得制得的耐磨PVC给水管具有很好的隔音效果。
上述实施例仅例示性说明本发明的原理及其功效,而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下,对上述实施例进行修饰或改变。因此,举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变,仍应由本发明的权利要求所涵盖。
Claims (4)
1.一种耐磨PVC给水管,其特征在于,按重量分配比包括有以下组分:
SG-5型PVC树脂90-110份、稀土复合稳定剂3-8份、丙稀酸脂类高分子共聚物1-5份、氯化聚乙烯5-15份、活性轻钙5-12份、钛白2-8份、PE蜡0.1-0.6份、发泡剂2-5份;
一种耐磨PVC给水管加工工艺,包括有以下步骤:
S1,准备原材料:SG-5型PVC树脂、稀土复合稳定剂、丙稀酸脂类高分子共聚物、氯化聚乙烯、活性轻钙、钛白、PE蜡、发泡剂;
S2,将原材料分为A、B两份;
S3,将A份原材料投入第一高速混合机中进行热混,然后冷混,并由第一挤出机基础成型,得到内层管;
S4,将B份原材料投入第二高速混合机中进行热混,然后冷混,并由第二挤出机基础成型,得到外层管;
S5,内层管的外壁喷涂发泡剂,并穿过第二挤出机的成型口处,冷却成型得到隔音保温PVC供水管;
所述S2中,A和B份的组分以及比例,A/B:SG-5型PVC树脂4/1、稀土复合稳定剂5/2、丙稀酸脂类高分子共聚物6/1、氯化聚乙烯7/3、活性轻钙8/3、钛白5/2、PE蜡7/4;
所述S3中,第一挤出机挤出PVC管温度控制范围:供料段100-140℃、压缩段150-180℃、计量段160-180℃、分流器170-185℃、模口170-185℃;
所述S4中,第二挤出机PVC管温度控制范围:供料段90-120℃、压缩段120-140℃、计量段140-160℃、分流器135-155℃、模口150-165℃。
2.根据权利要求1所述的一种耐磨PVC给水管,其特征在于,按重量分配比包括有以下组分:
SG-5型PVC树脂91份、稀土复合稳定剂4份、丙稀酸脂类高分子共聚物2份、氯化聚乙烯6份、活性轻钙6份、钛白3份、PE蜡0.2份、发泡剂3份。
3.根据权利要求1所述的一种耐磨PVC给水管,其特征在于,按重量分配比包括有以下组分:
SG-5型PVC树脂90-110份、稀土复合稳定剂5份、丙稀酸脂类高分子共聚物3份、氯化聚乙烯9份、活性轻钙8份、钛白4份、PE蜡0.4份、发泡剂3.8份。
4.根据权利要求1所述的种耐磨PVC给水管,其特征在于,按重量分配比包括有以下组分:
SG-5型PVC树脂108份、稀土复合稳定剂7份、丙稀酸脂类高分子共聚物4份、氯化聚乙烯13份、活性轻钙11份、钛白7份、PE蜡0.5份、发泡剂4.5份。
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