CN112248591A - 一种pvc共挤板及其加工工艺 - Google Patents

一种pvc共挤板及其加工工艺 Download PDF

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CN112248591A
CN112248591A CN202011127663.1A CN202011127663A CN112248591A CN 112248591 A CN112248591 A CN 112248591A CN 202011127663 A CN202011127663 A CN 202011127663A CN 112248591 A CN112248591 A CN 112248591A
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pvc
wax
core layer
foaming
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任军
王翠
杨宇
唐龙祥
郁朋飞
蔡二东
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Mengcheng County Xinruite Building Material Co ltd
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Abstract

本发明的目的在于提供一种PVC共挤板及其加工工艺，一种PVC共挤板，包括芯层以及位于芯层单面的表层，所述芯层由如下重量份的组分制备：建筑模板发泡回料100‑‑175份、PVC 25‑‑50份、铅盐稳定剂2‑‑3份、黄发泡0.2‑‑0.7份、白发泡0.5‑‑1份、发泡调节剂3.0‑‑8.0份、PE蜡0.2‑‑0.5份、氧化聚乙烯蜡0.1‑‑0.2份、硬脂酸内润滑剂0.2‑‑0.4份、增强剂2.0‑‑5.0份；所述表层由如下重量份的组分制备：PVC 75‑‑100份、铅盐稳定剂3‑‑3.6份氯化聚乙烯2‑‑3份、PE蜡0.4‑‑0.8份、氧化聚乙烯蜡0.2‑‑0.4份、润滑剂0.2‑‑0.5份、钛白粉0.5‑‑0.8份、增强剂3.0‑‑5份、发泡剂2.0‑‑2.6份、碳酸钙15‑‑25份。该PVC共挤板温变形能力提高，耐老化性能提高，减少了板材在冬季脆夏季变形的缺点。

Description

一种PVC共挤板及其加工工艺
技术领域
本发明涉及一种PVC板生产领域，具体是一种PVC共挤板及其加工工艺。
背景技术
木塑复合板是一种主要由木材等纤维材料为基础材料与热塑性高分子材料和加工助剂等，混合均匀后再经模具设备加热挤出成型而制成的高科技绿色环保材料，其兼有木材和塑料的性能与特征，是能代替木材和塑料的新型复合材料。随着木塑技术的逐渐发展，木塑板应用日益广泛，如家具业、室内装饰业、车船内饰业以及未来木质房屋建筑业首选绿色环保板材，必将在板材市场掀起一轮新革命。但是，现有的复合木塑板主要是由PVC形成，PVC用量大，从而使得制备成本高，降低了复合木塑板的环保型，且现有的PVC板抗温变形能力较差，容易使板材冬季脆夏季变形。
发明内容
本发明的目的在于提供一种PVC共挤板及其加工工艺，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：
一种PVC共挤板，包括芯层以及位于芯层单面的表层，
所述芯层由如下重量份的组分制备：
建筑模板发泡回料 100--175份
PVC 25--50份
铅盐稳定剂 2--3份
黄发泡 0.2--0.7份
白发泡 0.5--1份
发泡调节剂 3.0--8.0份
PE蜡 0.2--0.5份
氧化聚乙烯蜡 0.1--0.2份
硬脂酸内润滑剂 0.2--0.4份
增强剂 2.0--5.0份；
所述表层由如下重量份的组分制备：
PVC 75--100份
铅盐稳定剂 3--3.6份
氯化聚乙烯 2--3份
PE蜡 0.4--0.8份
氧化聚乙烯蜡 0.2--0.4份
润滑剂 0.2--0.5份
钛白粉 0.5--0.8份
增强剂 3.0--5份
发泡剂 2.0--2.6份
碳酸钙 15--25份。
作为本发明进一步的方案：所述表层的厚度为1.0-2.0mm。
一种PVC共挤板的加工工艺，包括以下步骤：
步骤1：将芯层材料按照组分进行高温热混合处理和进行低温冷混后投入85机中，通过双螺杆挤出至分配器中，芯层熔融物被分配在分配器的下层；
步骤2：将表层材料按照组分进行高温热混合处理和进行低温冷混后投入65机中，通过双螺杆挤出至分配器中，表层熔融物被分配在分配器的上层；
步骤3：将分配器中位于下层的芯层熔融物以及位于上层的表层熔融物共同挤出至模具中进行成型，并冷却定型；
步骤4：将冷却定型后的板材定尺切割，并进行相应地工艺处理以及模板成型，获得PVC共挤板成品；
步骤5：对PVC共挤板成品进行质量检测，对合格品包装入库，对不合格品进行粉碎磨粉后进行二次加工回用。
作为本发明进一步的方案：所述高温热混的温度为120度。
作为本发明进一步的方案：所述低温冷混的温度为50度。
与现有技术相比，本发明的有益效果是：
本发明通过单面共挤工艺生产的PVC共挤板，具有更大的静曲强度和静曲弹性模量，因此，该PVC共挤板抗温变形能力提高，耐老化性能提高，减少了板材在冬季脆夏季变形的缺点。
附图说明
图1为PVC共挤板的加工工艺流程图；
具体实施方式
为详细说明技术方案的技术内容、构造特征、所实现目的及效果，以下结合具体实施例并配合附图详予说明。
实施例1
步骤1：将芯层材料按照建筑模板发泡回料100份、PVC 25份、铅盐稳定剂2份、黄发泡0.2份、白发泡0.5份、发泡调节剂3.0份、PE蜡0.2份、氧化聚乙烯蜡0.1份、硬脂酸内润滑剂0.2份、增强剂2.0份进行高温热混合处理和进行低温冷混后投入85机中，通过双螺杆挤出至分配器中，芯层熔融物被分配在分配器的下层，其中，高温热混的温度为120度、低温冷混的温度为50度；
步骤2：将表层材料按照PVC 75份、铅盐稳定剂3份、氯化聚乙烯2份、PE蜡0.4份、氧化聚乙烯蜡0.2份、润滑剂0.2份、钛白粉0.5份、增强剂3.0份、发泡剂2.0份、碳酸钙15份进行高温热混合处理和进行低温冷混后投入65机中，通过双螺杆挤出至分配器中，表层熔融物被分配在分配器的上层，其中高温热混的温度为120度、低温冷混的温度为50度；
步骤3：将分配器中位于下层的芯层熔融物以及位于上层的表层熔融物共同挤出至模具中进行成型，并冷却定型，其表层厚度为1.0mm；
步骤4：将冷却定型后的板材定尺切割，并进行相应地工艺处理以及模板成型，获得PVC共挤板成品；
步骤5：对PVC共挤板成品进行质量检测，对合格品包装入库，对不合格品进行粉碎磨粉后进行二次加工回用。
实施例2
步骤1：将芯层材料按照建筑模板发泡回料175份、PVC 50份、铅盐稳定剂3份、黄发泡0.7份、白发泡1份、发泡调节剂8.0份、PE蜡0.5份、氧化聚乙烯蜡0.2份、硬脂酸内润滑剂0.4份、增强剂5.0份进行高温热混合处理和进行低温冷混后投入85机中，通过双螺杆挤出至分配器中，芯层熔融物被分配在分配器的下层，其中，高温热混的温度为120度、低温冷混的温度为50度；
步骤2：将表层材料按照PVC 100份、铅盐稳定剂3.6份、氯化聚乙烯3份、PE蜡0.8份、氧化聚乙烯蜡0.4份、润滑剂0.5份、钛白粉0.8份、增强剂5份、发泡剂2.6份、碳酸钙25份进行高温热混合处理和进行低温冷混后投入65机中，通过双螺杆挤出至分配器中，表层熔融物被分配在分配器的上层，其中高温热混的温度为120度、低温冷混的温度为50度；
步骤3：将分配器中位于下层的芯层熔融物以及位于上层的表层熔融物共同挤出至模具中进行成型，并冷却定型，其表层厚度为2.0mm；
步骤4：将冷却定型后的板材定尺切割，并进行相应地工艺处理以及模板成型，获得PVC共挤板成品；
步骤5：对PVC共挤板成品进行质量检测，对合格品包装入库，对不合格品进行粉碎磨粉后进行二次加工回用。
对比例1
一种PVC结皮板，该结皮板采用实施例1中芯层和表层的配方并进行音面结皮制得。
对比例2
一种PVC结皮板，该结皮板采用实施例2中芯层和表层的配方并进行音面结皮制得。
表1：
Figure BDA0002734144710000051
参见表1，表1中的静曲强度反映板材在受力弯曲到断裂时它所能承受的压力强度，静曲强度越高，说明板材抗弯能力越强，静曲弹性模量反映板材的坚性和易曲性，静曲弹性模量越高，则说明板材越坚硬，趟不容易产生形变。
经过对比可知，实施例1和2较对比例1和2中，采用单面共挤工艺加工出的PVC共挤板比单面结皮PVC板具有更大的静曲强度和静曲弹性模量，因此，该PVC共挤板抗温变形能力提高，耐老化性能提高，减少了板材在冬季脆夏季变形的缺点。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括……”或“包含……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的要素。此外，在本文中，“大于”、“小于”、“超过”等理解为不包括本数；“以上”、“以下”、“以内”等理解为包括本数。
尽管已经对上述各实施例进行了描述，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改，所以以上所述仅为本发明的实施例，并非因此限制本发明的专利保护范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围之内。

Claims (5)

1.一种PVC共挤板，包括芯层以及位于芯层单面的表层，其特征在于：
所述芯层由如下重量份的组分制备：
建筑模板发泡回料 100--175份
PVC 25--50份
铅盐稳定剂 2--3份
黄发泡 0.2--0.7份
白发泡 0.5--1份
发泡调节剂 3.0--8.0份
PE蜡 0.2--0.5份
氧化聚乙烯蜡 0.1--0.2份
硬脂酸内润滑剂 0.2--0.4份
增强剂 2.0--5.0份；
所述表层由如下重量份的组分制备：
PVC 75--100份
铅盐稳定剂 3--3.6份
氯化聚乙烯 2--3份
PE蜡 0.4--0.8份
氧化聚乙烯蜡 0.2--0.4份
润滑剂 0.2--0.5份
钛白粉 0.5--0.8份
增强剂 3.0--5份
发泡剂 2.0--2.6份
碳酸钙 15--25份。
2.根据权利要求1所述的PVC共挤板，其特征在于：所述表层的厚度为1.0-2.0mm。
3.一种根据权利要求1或2所述的PVC共挤板的加工工艺，其特征在于：包括以下步骤：
步骤1：将芯层材料按照组分进行高温热混合处理和进行低温冷混后投入85机中，通过双螺杆挤出至分配器中，芯层熔融物被分配在分配器的下层；
步骤2：将表层材料按照组分进行高温热混合处理和进行低温冷混后投入65机中，通过双螺杆挤出至分配器中，表层熔融物被分配在分配器的上层；
步骤3：将分配器中位于下层的芯层熔融物以及位于上层的表层熔融物共同挤出至模具中进行成型，并冷却定型；
步骤4：将冷却定型后的板材定尺切割，并进行相应地工艺处理以及模板成型，获得PVC共挤板成品；
步骤5：对PVC共挤板成品进行质量检测，对合格品包装入库，对不合格品进行粉碎磨粉后进行二次加工回用。
4.根据权利要求3所述的加工工艺，其特征在于：所述高温热混的温度为120度。
5.根据权利要求3所述的加工工艺，其特征在于：所述低温冷混的温度为50度。
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