CN104530600B - 一种彩色共挤塑料管材 - Google Patents

一种彩色共挤塑料管材 Download PDF

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CN104530600B
CN104530600B CN201410834026.6A CN201410834026A CN104530600B CN 104530600 B CN104530600 B CN 104530600B CN 201410834026 A CN201410834026 A CN 201410834026A CN 104530600 B CN104530600 B CN 104530600B
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asa resin
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姜虹
王利涛
柳相飞
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LIAONING CHENGWEI PLASTIC PROFILE Co Ltd
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Abstract

本发明公开了一种彩色共挤塑料管材，包括PVC基材和ASA树脂改性层，其中ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯5％‑45％；PMMA 8％‑20％；润滑剂0.1％‑0.4％；分散剂0.2％‑1.2％；抗氧剂0.4％‑0.8％；紫外线吸收剂0.25％‑0.7％；颜料2％‑8％；碳酸钙6％‑8％；二氧化硅0.3％‑0.8％；稳定剂3％‑6％；余量为ASA树脂，本发明进一步公开了采用共挤成型将PVC基材和ASA树脂改性层复合的具体方法。本发明的彩色共挤塑料管材的色彩耐久性大幅提高，所得管材的壁厚均匀，表面性能优异。

Description

一种彩色共挤塑料管材
技术领域
本发明属于塑料型材成型领域，涉及一种共挤塑料管材，特别涉及一种通过彩色共挤方法成型的塑料管材。
背景技术
市场上大多数塑料管材均为单色或者通体彩色PVC管材，单一白色的塑料管材虽然成本低廉，但装饰性差，而且使用一段时间后容易出现表面变黄的问题；通体彩色的PVC管材虽然色彩丰富，装饰性强，但是成本较高，而且普通彩色PVC管材使用一段时间后也容易出现表面光泽度会降低，颜色减淡的“褪色”现象。
因此，有必要提供一种成本较低，且具有良好耐候性能的彩色共挤塑料管材。
发明内容
有鉴于此，本发明的目的在于提供一种彩色共挤塑料管材，该管材具有综合成本低，长久使用不变色的优点。
为达到上述目的，本发明提供如下技术方案：
一种彩色共挤塑料管材，包括PVC基材和ASA树脂改性层，所述PVC基材按质量计百分比由以下组份组成：PVC 95-100；CPE 10-12份；ACR2.8-3.3份；TiO23.6-4.3份；CaCO316-20份；Tcc 16-20份；硬脂酸钙0.25-0.27份；石蜡0.14-0.16份；稳定剂2.8-3.1份；所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯5％-45％；PMMA 8％-20％；润滑剂0.1％-0.4％；分散剂0.2％-1.2％；抗氧剂0.4％-0.8％；紫外线吸收剂0.25％-0.7％；颜料2％-8％；碳酸钙6％-8％；二氧化硅0.3％-0.8％；稳定剂3％-6％；余量为ASA树脂。
作为本发明的优选，所述PVC基材和ASA树脂改性层经共挤复合成型，包括以下步骤：
1)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
2)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
3)利用牵引机将步骤2)所得管材引入真空定型模进行真空定型；
4)冷却步骤3)所得管材得成品。
作为本发明的另一种优选，挤压成型过程中主料机筒加热一、二区温度为107-185℃，三、四区温度为160-170℃，机头温度为160-170℃，螺杆转速为23-30r/min；所述辅料机筒加热一区温度为145-155℃，加热二区温度为140-150℃，加热三区温度为140-150℃，螺杆转速为18-24r/min。
作为本发明的进一步优选，步骤3)牵引机器的牵引速度为1-3m/min，真空定型模的真空度为0.75-0.85MPa。
作为本发明的进一步优选，步骤4)采用水冷的方式冷却管材，水冷温度控制在18-23℃。
本发明的有益效果在于：
本发明塑料管材采用共挤成型的方法制得，避免通体使用彩色原料所带来的高成本，本发明进一步优化了PVC基材和ASA树脂改性层的成份及配比，使得管材的色彩耐久性大幅提高(其耐候性与抗老化性能比单纯白色塑料管提高了30％左右)；本发明进一步优化了共挤成型过程中主料机筒、辅料机筒各段温度、螺杆转速，有助于PVC基材和ASA改性料良好的复合；本发明进一步优化了真空定型时真空度与牵引速度，冷却时的冷却方式及冷却温度，有助于获得壁厚均匀，表面性能优异的复合管材。
具体实施方式
下面对本发明的优选实施例进行详细的描述。
实施例1：
本实施例的彩色共挤塑料管材，包括PVC基材和ASA树脂改性层：
所述PVC基材按质量计百分比由以下组份组成：PVC 100；CPE 11份；ACR 3份；TiO24份；CaCO318份；Tcc 18份；硬脂酸钙0.26份；石蜡0.15份；稳定剂3份；
所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯28％；PMMA 15％；润滑剂0.3％；分散剂0.9％；抗氧剂0.5％；紫外线吸收剂0.55％；颜料5％；碳酸钙7％；二氧化硅0.5％；稳定剂4％；余量为ASA树脂。
本实施例中，所述PVC基材和ASA树脂改性层经共挤复合成型，包括以下步骤：
1)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
2)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
3)利用牵引机将步骤2)所得管材引入真空定型模进行真空定型；
4)冷却步骤3)所得管材得成品。
本实施例中，挤压成型过程中主料机筒加热一、二区温度为155℃，三、四区温度为165℃，机头温度为168℃，螺杆转速为27r/min；所述辅料机筒加热一区温度为149℃，加热二区温度为150℃，加热三区温度为150℃，螺杆转速为19r/min。
本实施例中，步骤3)牵引机器的牵引速度为2m/min，真空定型模的真空度为0.78MPa。
本实施例中，步骤4)采用水冷的方式冷却管材，水冷温度控制在20℃。
实施例2：
本实施例的彩色共挤塑料管材，包括PVC基材和ASA树脂改性层：
所述PVC基材按质量计百分比由以下组份组成：PVC 95；CPE 12份；ACR 2.8份；TiO24.3份；CaCO316份；Tcc 20份；硬脂酸钙0.25份；石蜡0.16份；稳定剂2.8份；
所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯8％；PMMA 18％；润滑剂0.1％；分散剂1.2％；抗氧剂0.4％；紫外线吸收剂0.7％；颜料2％；碳酸钙8％；二氧化硅0.3％；稳定剂6％；余量为ASA树脂。
本实施例中，所述PVC基材和ASA树脂改性层经共挤复合成型，包括以下步骤：
5)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
6)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
7)利用牵引机将步骤2)所得管材引入真空定型模进行真空定型；
8)冷却步骤3)所得管材得成品。
本实施例中，挤压成型过程中主料机筒加热一、二区温度为135℃，三、四区温度为160℃，机头温度为170℃，螺杆转速为23r/min；所述辅料机筒加热一区温度为145℃，加热二区温度为150℃，加热三区温度为150℃，螺杆转速为24r/min。
本实施例中，步骤3)牵引机器的牵引速度为3m/min，真空定型模的真空度为0.75-0.85MPa。
本实施例中，步骤4)采用水冷的方式冷却管材，水冷温度控制在22℃。
实施例3：
本实施例的彩色共挤塑料管材，包括PVC基材和ASA树脂改性层：
所述PVC基材按质量计百分比由以下组份组成：PVC 100；CPE 10份；ACR 3.3份；TiO23.6份；CaCO320份；Tcc 16份；硬脂酸钙0.27份；石蜡0.14份；稳定剂3.1份；
所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯41％；PMMA 10％；润滑剂0.4％；分散剂0.2％；抗氧剂0.8％；紫外线吸收剂0.25％；颜料8％；碳酸钙6％；二氧化硅0.3％；稳定剂6％；余量为ASA树脂。
本实施例中，所述PVC基材和ASA树脂改性层经共挤复合成型，包括以下步骤：
9)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
10)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
11)利用牵引机将步骤2)所得管材引入真空定型模进行真空定型；
12)冷却步骤3)所得管材得成品。
本实施例中，挤压成型过程中主料机筒加热一、二区温度为155℃，三、四区温度为168℃，机头温度为170℃，螺杆转速为23r/min；所述辅料机筒加热一区温度为155℃，加热二区温度为150℃，加热三区温度为150℃，螺杆转速为23r/min。
本实施例中，步骤3)牵引机器的牵引速度为2m/min，真空定型模的真空度为0.79MPa。
本实施例中，步骤4)采用水冷的方式冷却管材，水冷温度控制在20℃。
实施例4：
本实施例的彩色共挤塑料管材，包括PVC基材和ASA树脂改性层：
所述PVC基材按质量计百分比由以下组份组成：PVC 97；CPE 11份；ACR 2.8份；TiO23.9份；CaCO318份；Tcc 18份；硬脂酸钙0.6份；石蜡0.15份；稳定剂2.9份；
所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯30％；PMMA 15％；润滑剂0.3％；分散剂0.8％；抗氧剂0.7％；紫外线吸收剂0.45％；颜料5％；碳酸钙5％；二氧化硅0.38％；稳定剂4％；余量为ASA树脂。
本实施例中，所述PVC基材和ASA树脂改性层经共挤复合成型，包括以下步骤：
13)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
14)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
15)利用牵引机将步骤2)所得管材引入真空定型模进行真空定型；
16)冷却步骤3)所得管材得成品。
本实施例中，挤压成型过程中主料机筒加热一、二区温度为120℃，三、四区温度为1605℃，机头温度为165℃，螺杆转速为27r/min；所述辅料机筒加热一区温度为148℃，加热二区温度为144℃，加热三区温度为148℃，螺杆转速为23r/min。
本实施例中，步骤3)牵引机器的牵引速度为2m/min，真空定型模的真空度为0.82MPa。
本实施例中，步骤4)采用水冷的方式冷却管材，水冷温度控制在21℃。
上述实施例的彩色共挤塑料管材，避免通体使用彩色原料所带来的高成本，使得管材的色彩耐久性大幅提高(其耐候性与抗老化性能比单纯白色塑料管提高了30％左右)，所得管材的壁厚均匀，表面性能优异。
最后说明的是，以上优选实施例仅用以说明本发明的技术方案而非限制，尽管通过上述优选实施例已经对本发明进行了详细的描述，但本领域技术人员应当理解，可以在形式上和细节上对其作出各种各样的改变，而不偏离本发明权利要求书所限定的范围。

Claims (5)

1.一种彩色共挤塑料管材，其特征在于：包括PVC基材和ASA树脂改性层，所述PVC基材按质量份数计由以下组份组成：PVC 95-100；CPE 10-12份；ACR 2.8-3.3份；TiO2 3.6-4.3份；CaCO3 16-20份；Tcc 16-20份；硬脂酸钙0.25-0.27份；石蜡 0.14-0.16份；稳定剂 2.8-3.1份；所述ASA树脂改性层按质量计百分比由以下组份组成：聚碳酸酯 5%-45%；PMMA 8%-20%；润滑剂 0.1%-0.4%；分散剂 0.2%-1.2%；抗氧剂 0.4%-0.8%；紫外线吸收剂 0.25%-0.7%；颜料 2%-8%；碳酸钙 6%-8%；二氧化硅 0.3%-0.8%；稳定剂 3%-6%；余量为ASA树脂。
2.根据权利要求1所述彩色共挤塑料管材，其特征在于：所述PVC基材和ASA树脂改性层经共挤复合成型，具体包括以下步骤：
1)将基料加入主料机筒，ASA改性料分别加入两个辅料机筒；
2)调整主料机筒和辅料机筒挤压参数，使基料和ASA改性料经共挤模具同步挤出成型；
3)利用牵引机将步骤2）所得管材引入真空定型模进行真空定型；
4)冷却步骤3）所得管材得成品。
3.根据权利要求2所述彩色共挤塑料管材，其特征在于：挤压成型过程中主料机筒加热一、二区温度为107-185℃，三、四区温度为160-170℃，机头温度为160-170℃，螺杆转速为23-30r/min；所述辅料机筒加热一区温度为145-155℃，加热二区温度为140-150℃，加热三区温度为140-150℃，螺杆转速为18-24r/min。
4.根据权利要求2所述彩色共挤塑料管材，其特征在于：步骤3）牵引机器的牵引速度为1-3m/min，真空定型模的真空度为0.75-0.85MPa。
5.根据权利要求2所述彩色共挤塑料管材，其特征在于：步骤4）采用水冷的方式冷却管材，水冷温度控制在18-23℃。
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