CN105328891B - 涂有丙烯酸树脂的pvc管材及其制造方法和生产设备 - Google Patents

涂有丙烯酸树脂的pvc管材及其制造方法和生产设备 Download PDF

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CN105328891B
CN105328891B CN201510688724.4A CN201510688724A CN105328891B CN 105328891 B CN105328891 B CN 105328891B CN 201510688724 A CN201510688724 A CN 201510688724A CN 105328891 B CN105328891 B CN 105328891B
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CN105328891A (zh
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张毅
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HANGZHOU MODING BUILDING MATERIALS Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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    • B29C2948/92Measuring, controlling or regulating
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Abstract

本发明涉及管材涂层装置和涂涂层方法的设计领域,公开了管材外表面涂层装置和涂涂层的方法及PVC管材,涂有丙烯酸树脂的PVC管材的生产设备,包括挤出机和与挤出机连接的供给机,挤出机上设有成型模具,供给机设在挤出机的一侧,供给机上设有出口管,出口管的一端与成型模具连接,涂有丙烯酸树脂的PVC管材的制造方法,将PVC混料投入到挤出机中,将丙烯酸树脂投入到供给机中,丙烯酸树脂通过成型模具涂在PVC管材的外表面上;涂有丙烯酸树脂的PVC管材,还包括PVC管材本体,通过以上所述的丙烯酸树脂涂层的PVC管材生产方法将丙烯酸树脂涂在PVC管材本体的外表面上。本发明具有较强的耐候性,低密度,卓越的热稳定性,使PVC管材不易褪色和老化。

Description

涂有丙烯酸树脂的PVC管材及其制造方法和生产设备
技术领域
本发明涉及管材涂层装置和涂涂层方法的设计领域,尤其涉及一种涂有丙烯酸树脂的PVC管材及其制造方法和生产设备。
背景技术
国内目前在生产制作PVC管材的过程中,大致采用白色、棕色、米黄、灰色等通体色,易褪色已是通病,包括国外进口产品也是如此,而且经过紫外线的长时间照射,容易加速产品的老化。
发明内容
本发明针对现有技术中易褪色、易老化缺点,提供了一种不易褪色、不易老化的涂有丙烯 酸树脂的PVC管材及其制造方法和生产设备。
为了解决上述技术问题,本发明通过下述技术方案得以解决:
涂有丙烯酸树脂的PVC管材的生产设备,包括挤出机和与挤出机连接的供给机,其特征在于:挤出机上设有成型模具,供给机设在挤出机的一侧,供给机上设有出口管,出口管的端部与成型模具连接。供给机用于挤出丙烯酸树脂,挤出机用于挤出PVC混料,将供给机的出口管与挤出机的成型模具连接,使供给机内的丙烯 酸树脂与挤出机内的PVC混料挤入到成型模具中,形成新的产品,方便了两种材料的混合,同时也可将供给机内的材料涂在挤出机上PVC混料形成PVC管材之后的表面上。
作为优选,挤出机的成型模具的右侧设有由右至左依次排列且与成型模具连接的一区第一料筒、二区第一料筒、三区第一料筒、四区第一料筒,成型模具的左侧设有与成型模具连接的定型模具。挤出机的材料通过一区第一料筒、二区第一料筒、三区第一料筒、四区第一料筒进行高温加工,通过成型模具时将PVC混料按照模具的管材形状挤出形成PVC管材,再通过定型模具进行固定硬化,提高PVC管材的强度,材料通过多次高温加工,改变了PVC管材的性质和密度,使PVC管材有更好的耐久性,更长的使用寿命。
作为优选,供给机上设有依次连接的一区第二料筒、二区第二料筒、三区第二料筒,出口管与三区第二料筒连接。供给机上的丙烯酸树脂通过一区第二料筒、二区第二料筒、三区第二料筒的加工挤出到出口管中,再通过出口管挤到成型模具中,通过模具使丙烯酸树脂涂在成型模具中的PVC管材的表面上,使PVC管材不易老化,外表面不易褪色。
作为优选,挤出机为双螺杆挤出机,供给机为单螺杆供给机。
涂有丙烯 酸树脂的PVC管材的制造方法,包括下述步骤:
1)将丙烯酸树脂在85℃容器内,烘烤3小时;
2)按配料量将PVC混料投入到塑料热混合机内,在塑料热混合机内捏合,将PVC混料在塑料热混合机内搅拌并升温至90~150℃,然后放入冷却锅形成粉末状,冷却至60℃以下待用;
3)将双螺杆挤出机的一区第一料筒、二区第一料筒、三区第一料筒、四区第一料筒分别升温至145~155℃、150~160℃、155~175℃、150~160℃,供给机的一区第二料筒、二区第二料筒、三区第二料筒分别升温至170~190℃、180~190℃、190~200℃,成型模具的升温至160℃~165℃,定型模具温度升温至190℃~198℃;
4)将PVC混料投入到挤出机中,将丙烯酸树脂投入到供给机中;
5)先打开供给机的开关将供给机中的丙烯酸树脂通过单螺杆挤出依次通过一区第二料筒、二区第二料筒、三区第二料筒、成型模具,再打开挤出机将PVC 混料通过双螺杆挤出依次通过一区第一料筒、二区第一料筒、三区第一料筒、四区第一料筒和成型模具,PVC混料通过成型模具形成PVC管材,丙烯酸树脂通过成型模具涂在PVC管材的外表面上;
6)在成型模具中PVC管材上涂有丙烯酸树脂后通过挤出机挤入到定型模具中,采用真空压力定径,并通过水冷却定型硬化。通过双螺杆挤出机和供给机共用一台模具,先把PVC管材定型,然后通过供给机把丙烯酸树脂附着到PVC管材表面,使其充分粘合,再通过定型模具真空定径和水冷却,使PVC管材定型硬化,最后由牵引机拉拔、切割,PVC管材以此成型,将丙烯酸树脂紧密粘合在PVC管材上,不易褪色,并且在紫外线的照射下不易老化,延长了PVC管材的使用寿命。
作为优选,PVC混料与丙烯酸树脂重量份配比如下:PVC混料100,丙烯酸树脂4~8。
作为优选,供给机单螺杆的转速为15~30r/min,挤出机双螺杆的转速8~15r/min。通过控制相应的挤出速度,使丙烯酸树脂充分粘合在PVC管材上,保证了涂层工艺的稳定性。
作为优选,PVC混料重量成分配比如下:PVC树脂粉100,丙烯酸酯1.5~4.5,硬脂酸0.5~2,活性钙30~40,热稳定剂0.5~3.5,白石蜡0.5~3,二辛酯1~5。热稳定剂为PVC热稳定剂,活性钙为轻质活性钙或重质活性钙,从使用角度热稳定剂为主热稳定剂或辅助热稳定剂或复合热稳定剂。
涂有丙烯酸树脂的PVC管材,还包括PVC管材本体,通过上述的涂有丙烯酸树脂的PVC管材的制造方法将丙烯酸树脂涂在PVC管材本体的外表面上。增强了PVC管材不易褪色的能力,起到对PVC管材的保护作用,同时增强了PVC管材的强度,不易破裂,丙烯酸树脂可以选择与房屋相应的颜色,提高整体构造的美观程度。
作为优选,丙烯酸树脂涂层厚度范围在0.2~0.6mm。使PVC管材在紫外线的照射下不易老化。
本发明由于采用了以上技术方案,具有显著的技术效果:采用PVC和丙烯酸系列树脂双层挤压技术,通过两台挤出机共用一台模具,把丙烯酸树脂附着到PVC管材沟表面,经过定型膜定型冷却,使其充分粘合,最后由牵引机拉拔、切割,具有较强的耐候性,低密度,卓越的热稳定性,使PVC管材不易褪色和老化,延长了PVC管材的使用寿命。
附图说明
图1是本发明的示意图
附图中各数字标号所指代的部位名称如下:1—挤出机、2—供给机、3—成型模具、4—出口管、5—一区第一料筒、6—二区第一料筒、7—三区第一料筒、8—四区第一料筒、9—定型模具、10—一区第二料筒、11—二区第二料筒、12—三区第二料筒。
具体实施方式
下面结合附图与实施例对本发明作进一步详细描述。
实施例1
涂有丙烯酸树脂的PVC管材的生产设备,如图1所示,包括挤出机1和与挤出机1连接的供给机2,挤出机1和供给机2上均设有进料口,挤出机1上设有成型模具3,供给机2设在挤出机1的一侧,供给机2上设有出口管4,出口管4的端部与成型模具3连接,挤出机1的成型模具3的右侧设有由右至左依次排列且成型模具3与连接的一区第一料筒5、二区第一料筒6、三区第一料筒7、四区第一料筒8,成型模具3的左侧设有与成型模具3连接的定型模具9,供给机2上设有依次连接的一区第二料筒10、二区第二料筒11、三区第二料筒12,出口管4另一端与三区第二料筒12连接,挤出机1为双螺杆挤出机,供给机2为单螺杆供给机。
涂有丙烯酸树脂的PVC管材的制造方法,包括下述步骤:
1)将丙烯酸树脂在85℃容器内,烘烤3小时;
2)按配料量将PVC混料投入到塑料热混合机内,在塑料热混合机内告诉捏合,将PVC混料在塑料热混合机内搅拌并升温至120℃,然后放入冷却锅形成粉末状,冷却至60℃以下待用;
3)将挤出机1的一区第一料筒5、二区第一料筒6、三区第一料筒7、四区第一料筒8分别升温至150℃、155℃、160℃、155℃,供给机2的一区第二料筒10、二区第二料筒11、三区第二料筒12分别升温至180℃、185℃、195℃,成型模具3的升温至163℃,定型模具9温度升温至195℃。
4)将PVC混料投入到挤出机1的进料口中,将丙烯酸树脂投入到供给机2的进料口中;
5)先打开供给机2的开关将供给机2中的丙烯酸树脂通过单螺杆挤出依次通过一区第二料筒10、二区第二料筒11、三区第二料筒12加热,最后通过出口管4进入到成型模具3中,再打开挤出机1将PVC混料通过双螺杆挤出依次通过一区第一料筒5、二区第一料筒6、三区第一料筒7、四区第一料筒8和成型模具3,PVC混料通过成型模具3形成PVC管材,丙烯酸树脂通过成型模具3涂在PVC管材的外表面上;
6)将成型模具3中的PVC管材上涂有丙烯酸树脂后通过挤出机挤入到定型模具9中,采用真空压力定径,并通过水冷却定型硬化。
PVC混料与丙烯酸树脂重量份配比如下:PVC混料100,丙烯酸树脂5,供给机2单螺杆的转速为23r/min,挤出机1双螺杆的转速12.7r/min,PVC混料重量成分配比如下:PVC树脂粉100,丙烯酸酯3,硬脂酸1,活性钙35,热稳定剂2,白石蜡1.5,二辛酯3,活性钙为PVC专用活性钙,热稳定剂为PVC热稳定剂。
涂有丙烯酸树脂的PVC管材,还包括PVC管材本体,通过上述的丙烯酸树脂涂层的PVC管材生产工艺将丙烯酸树脂涂在PVC管材本体的外表面上,丙烯酸树脂涂层厚度范围在0.4mm。
实施例2
在实施例1的基础上,挤出机1的一区第一料筒5、二区第一料筒6、三区第一料筒7、四区第一料筒8分别升温至145℃、150℃、155℃、150℃,有助于降低物料粘度,加快流动性,同给料段一样,可以减少剪切热的危害,供给机2的一区第二料筒10、二区第二料筒11、三区第二料筒12分别升温至170℃、180℃、190℃,成型模具3的升温至160℃,定型模具9的温度升温至190℃,PVC混料重量成分配比如下:PVC树脂粉100,丙烯酸酯2,硬脂酸1.5,活性钙30,热稳定剂1,白石蜡1,二辛酯2。
实施例3
在实施例1的基础上,挤出机1的一区第一料筒5、二区第一料筒6、三区第一料筒7、四区第一料筒8分别升温至155℃、160℃、175℃、160℃,供给机2的一区第二料筒10、二区第二料筒11、三区第二料筒12分别升温至190℃、190℃、200℃,成型模具3的升温至165℃,定型模具9的温度升温至198℃。总之,以上所述仅为本发明的较佳实施例,凡依本发明申请专利范围所作的均等变化与修饰,皆应属本发明专利的涵盖范围。

Claims (5)

1.涂有丙烯 酸树脂的PVC管材的制造方法,其特征在于:包括下述步骤:
1)将丙烯 酸树脂在85℃容器内,烘烤3小时;
2)按配料量将PVC混料投入到塑料热混合机内,在塑料热混合机内捏合,将PVC混料在塑料热混合机内搅拌并升温至90~150℃,然后放入冷却锅形成粉末状,冷却至60℃以下待用;
3)将挤出机(1)的一区第一料筒(5)、二区第一料筒(6)、三区第一料筒(7)、四区第一料筒(8)分别升温至145~155℃、150~160℃、155~175℃、150~160℃,供给机(2)的一区第二料筒(10)、二区第二料筒(11)、三区第二料筒(12)分别升温至170~190℃、180~190℃、190~200℃,成型模具(3)的升温至160℃~165℃,定型模具(9)温度升温至190℃~198℃;
4)将PVC混料投入到挤出机(1)中,将丙烯 酸树脂投入到供给机(2)中;
5)先打开供给机(2)的开关将供给机(2)中的丙烯 酸树脂通过单螺杆挤出依次通过一区第二料筒(10)、二区第二料筒(11)、三区第二料筒(12)、成型模具(3),再打开挤出机(1)将PVC混料通过双螺杆挤出依次通过一区第一料筒(5)、二区第一料筒(6)、三区第一料筒(7)、四区第一料筒(8)和成型模具(3),PVC混料通过成型模具(3)形成PVC管材,丙烯 酸树脂通过成型模具(3)涂在PVC管材的外表面上;
6)将成型模具(3)中的PVC管材上涂有丙烯 酸树脂后通过挤出机挤入到定型模具(9)中,采用真空压力定径,并通过水冷却定型硬化;PVC混料重量成分配比如下:PVC树脂粉100,丙烯酸酯1.5~4.5,硬脂酸0.5~2,活性钙30~40,热稳定剂0.5~3.5,白石蜡0.5~3,二辛酯1~5。
2.根据权利要求1所述的涂有丙烯 酸树脂的PVC管材的制造方法,其特征在于:PVC混料与丙烯 酸树脂重量份配比如下:PVC混料100,丙烯 酸树脂4~8。
3.根据权利要求1所述的涂有丙烯 酸树脂的PVC管材的制造方法,其特征在于:供给机(2)单螺杆的转速为15~30r/min,挤出机(1)双螺杆的转速8~15r/min。
4.涂有丙烯 酸树脂的PVC管材,还包括PVC管材本体,其特征在于:通过权利要求1所述的丙烯 酸树脂涂层的PVC管材生产方法将丙烯 酸树脂涂在PVC管材本体的外表面上。
5.根据权利要求4所述的涂有丙烯 酸树脂的PVC管材,其特征在于:丙烯 酸树脂涂层厚度范围在0.2~0.6mm。
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