CN110802905A - 一种聚乙烯木塑共挤型材 - Google Patents

一种聚乙烯木塑共挤型材 Download PDF

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CN110802905A
CN110802905A CN201911095557.7A CN201911095557A CN110802905A CN 110802905 A CN110802905 A CN 110802905A CN 201911095557 A CN201911095557 A CN 201911095557A CN 110802905 A CN110802905 A CN 110802905A
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polyethylene
wood
plastic
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曾广胜
江太君
尹琛
孟聪
陈一
胡灿
刘水长
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Hunan University of Technology
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Abstract

本发明公开了一种聚乙烯木塑共挤型材，包括面料和芯层材料，所述面料包括高密度聚乙烯、聚丙烯、线性低密度聚乙烯、马来酸酐接枝聚乙烯、芥酸酰胺、抗紫外线UV328、抗氧剂168、抗氧剂1076；所述芯层材料包括高密度聚乙烯再生料、木粉、碳酸钙、聚乙烯蜡。本发明通过共挤面粒中线性低密度聚乙烯与马来酸酐接枝聚乙烯含量以及聚乙烯木塑芯层料的润滑体系来调控木塑共挤层与芯层间的粘接强度，通过提升线性低密度聚乙烯含量降低芯层材料的外润滑可以明显提升聚乙烯木塑共挤型材中面料与芯层料之间的粘接强度。

Description

一种聚乙烯木塑共挤型材
技术领域
本发明涉及木塑型材技术领域，更具体地，涉及一种聚乙烯木塑共挤型材。
背景技术
木塑型材是以再生聚稀烃以及植物纤维为主要原材料经过混炼造粒、挤出定型而生产一种环保型挤出型材制品，可广泛应用于户外地板、墙板、护栏、凉亭的搭建。传统的木塑型材用木塑复合材料主要包含再生聚乙烯、木粉、钙粉、色粉、相容剂、润滑剂、抗氧化剂、抗菌剂、抗紫外线剂等，在型材截面内形成通体的结构。这种结构要求材料性能与组分配比具有一致性才能保证制品的质量，就造成了制品的成本过高，且性能并不是很理想。
目前共挤结构的木塑型材制品，通常在传统木塑型板的表面通过共挤技术包覆一层高性能功程塑料，用于展示制品的颜色、纹理，提升制品抗氧化、抗紫外以及耐磨性能。而芯层的木塑复合材料不需要添加色粉来染色，可以适当减少或不用抗氧化抗紫外助剂，一方面节约了成本，另一方面提升了制品的性能。共挤面料与芯层材料间的粘接强度一方面会影响板材的弯曲强度等物理机械指标，另一方面直接影响面料对芯料的包覆，在沸水蒸煮试验中影响材料的吸水性，严重会造成共挤层材料的鼓包。
发明内容
本发明的目的在于针对现有技术中的不足，提供一种聚乙烯木塑共挤型材，共挤型材中面料和芯层材料之间的结合强度高。
本发明的目的通过以下技术方案实现：
一种聚乙烯木塑共挤型材，包括面料和芯层材料，所述面料包括高密度聚乙烯、聚丙烯、线性低密度聚乙烯、马来酸酐接枝聚乙烯、芥酸酰胺、抗紫外线UV328、抗氧剂168、抗氧剂1076；所述芯层材料包括高密度聚乙烯再生料、木粉、碳酸钙、聚乙烯蜡。
进一步地，所述面料的原材料质量分数如下：高密度聚乙烯：50-90%，聚丙稀：5-15%，线性低密度聚乙烯：2-15%，马来酸酐接枝聚乙烯：0.5-5%，芥酸酰胺：0.1-0.5%，抗紫外线UV328：0.2-0.4%，抗氧剂168：0.2-0.5%，抗氧剂1076：0.2-0.5%。
进一步地，所述芯层材料的原材料质量分数如下：高密度聚乙烯再生料：20-30%,木粉：50-65%，碳酸钙：5-10%，硬酸酸钙：0.8-1.5%，聚乙烯蜡：0.5-2%。
进一步地，所述木粉的粒径为60~100目。
优选地，所述木粉的粒径为60目。
进一步地，所述面料均匀包裹芯层材料。
与现有技术相比，本发明的有益效果如下：
本发明通过共挤面粒中线性低密度聚乙烯与马来酸酐接枝聚乙烯含量以及聚乙烯木塑芯层料的润滑体系来调控木塑共挤层与芯层间的粘接强度，通过提升线性低密度聚乙烯含量降低芯层材料的外润滑可以明显提升聚乙烯木塑共挤型材中面料与芯层料之间的粘接强度。
具体实施方式
为了便于理解本发明，下文将结合实施例对本发明作更全面、细致地描述，但本发明的保护范围并不限于以下具体的实施例。
除非另有定义，下文中所使用的所有专业术语与本领域技术人员通常理解的含义相同。本文中所使用的专业术语只是为了描述具体实施例的目的，并不旨在限制本发明的保护范围。
除非另有特别说明，本发明中用到的各种原材料、试剂、仪器和设备等均可通过市场购买得到或者可通过现有方法制备得到。
实施例1
本实施例提供一种聚乙烯木塑共挤型材，包括面料和芯层材料，其中面料的原材料如下：高密度聚乙烯：80%，聚丙稀：8%，线性低密度聚乙烯：9%，马来酸酐接枝聚乙烯：2%，芥酸酰胺：0.2%，抗紫外线UV328：0.2%，抗氧剂168：0.3%，抗氧剂1076：0.3%，芯层材料的原材料如下：高密度聚乙烯再生料：30%,60目木粉：58%，碳酸钙：10%，硬酸酸钙：1.2%，聚乙烯蜡：0.8%。
对本实施例中的聚乙烯木塑共挤型材进行煮沸实验尺寸膨胀测试和拉伸强度测试，根据EN15534-1：2014和EN319：1993标准进行，聚乙烯木塑共挤型材的厚度方向膨胀1.72%，长度方向膨胀0.14%，密度方向膨胀0.03%，拉伸强度为2.53MPa。
实施例2
本实施例提供一种聚乙烯木塑共挤型材，包括面料和芯层材料，其中面料的原材料如下：高密度聚乙烯：75%，聚丙稀：15%，线性低密度聚乙烯：10%，马来酸酐接枝聚乙烯：4%，芥酸酰胺：0.2%，抗紫外线UV328：0.2%，抗氧剂168：0.3%，抗氧剂1076：0.3%；芯层材料的原材料如下：高密度聚乙烯再生料：25%,80目木粉：65%，碳酸钙：5%，硬酸酸钙：1%，聚乙烯蜡：2%。
对本实施例中的聚乙烯木塑共挤型材进行煮沸实验尺寸膨胀测试和拉伸强度测试，根据EN15534-1：2014和EN319：1993标准进行，聚乙烯木塑共挤型材的厚度方向膨胀1.89%，长度方向膨胀0.27%，密度方向膨胀0.09%，拉伸强度为2.47MPa。
实施例3
本实施例提供一种聚乙烯木塑共挤型材，包括面料和芯层材料，其中面料的原材料如下：高密度聚乙烯：82%，聚丙稀：8%，线性低密度聚乙烯：8%，马来酸酐接枝聚乙烯：0.5%，芥酸酰胺：0.3%，抗紫外线UV328：0.2%，抗氧剂168：0.5%，抗氧剂1076：0.5%，芯层材料的原材料如下：高密度聚乙烯再生料：30%,100目木粉：60%，碳酸钙：8%，硬酸酸钙：1.5%，聚乙烯蜡：0.5%。
对本实施例中的聚乙烯木塑共挤型材进行煮沸实验尺寸膨胀测试和拉伸强度测试，根据EN15534-1：2014和EN319：1993标准进行，聚乙烯木塑共挤型材的厚度方向膨胀1.82%，长度方向膨胀0.16%，密度方向膨胀0.07%，拉伸强度为2.35MPa。
实施例4
本实施例提供一种聚乙烯木塑共挤型材，包括面料和芯层材料，其中面料的原材料如下：高密度聚乙烯：80%，聚丙稀：8%，线性低密度聚乙烯：9%，马来酸酐接枝聚乙烯：2%，芥酸酰胺：0.2%，抗紫外线UV328：0.2%，抗氧剂168：0.3%，抗氧剂1076：0.3%，芯层材料的原材料如下：高密度聚乙烯再生料：30%,70目木粉：60%，碳酸钙：9%，硬酸酸钙：0.5%，聚乙烯蜡：0.5%。
对本实施例中的聚乙烯木塑共挤型材进行煮沸实验尺寸膨胀测试和拉伸强度测试，根据EN15534-1：2014和EN319：1993标准进行，聚乙烯木塑共挤型材的厚度方向膨胀1.91%，长度方向膨胀0.22%，密度方向膨胀0.05%，拉伸强度为2.48MPa。
显然，上述实施例仅仅是为清楚地说明本发明的技术方案所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (6)

1.一种聚乙烯木塑共挤型材，其特征在于，包括面料和芯层材料，所述面料包括高密度聚乙烯、聚丙烯、线性低密度聚乙烯、马来酸酐接枝聚乙烯、芥酸酰胺、抗紫外线UV328、抗氧剂168、抗氧剂1076；所述芯层材料包括高密度聚乙烯再生料、木粉、碳酸钙、聚乙烯蜡。
2.根据权利要求1所述的聚乙烯木塑共挤型材，其特征在于，所述面料的原材料质量分数如下：高密度聚乙烯：50-90%，聚丙稀：5-15%，线性低密度聚乙烯：2-15%，马来酸酐接枝聚乙烯：0.5-5%，芥酸酰胺：0.1-0.5%，抗紫外线UV328：0.2-0.4%，抗氧剂168：0.2-0.5%，抗氧剂1076：0.2-0.5%。
3.根据权利要求1所述的聚乙烯木塑共挤型材，其特征在于，所述芯层材料的原材料质量分数如下：高密度聚乙烯再生料：20-30%,木粉：50-65%，碳酸钙：5-10%，硬酸酸钙：0.8-1.5%，聚乙烯蜡：0.5-2%。
4.根据权利要求1所述的聚乙烯木塑共挤型材，其特征在于，所述木粉的粒径为60~100目。
5.根据权利要求4所述的聚乙烯木塑共挤型材，其特征在于，所述木粉的粒径为60目。
6.根据权利要求1所述的聚乙烯木塑共挤型材，其特征在于，所述面料均匀包裹芯层材料。
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