CN110317464A - 一种低收缩率塑木型材的制备方法 - Google Patents
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Abstract
本发明公开了一种低收缩率塑木型材的制备方法,包括以下步骤:首先木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌;再向其中加入聚乙烯、PVC树脂粉、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌;最后混合得到的物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的高热稳定性的塑木复合材料。本发明有效解决现有产品容易收缩的问题,本塑木型材可长时间在环境中使用,并且具有很好的强度。
Description
技术领域
本发明涉及材料技术领域,尤其涉及一种低收缩率塑木型材的制备方法。
背景技术
塑木复合材料是以塑料、木粉等植物纤维粉为主要原料,再加上其他助剂经挤出、模压、注射等工艺成型的一种新型复合材料,它具有不龟裂、不变形、耐腐蚀、可塑性强、能非常简单地实现个性化造型、高环保性、无污染、无公害、产品不含苯、甲醛等物质、易于切割、锯刨、钻孔和用螺丝固定等,是一种全新的绿色环保产品,也是一种生态洁净的复合材料,近些年来正引起越来越多的关注。
塑木复合材料被广泛应用在如户外(露台、阳台)地板、篱笆栅栏、栏杆护栏、桥梁铺板、花坛花箱、水边码头、水池护板、凳椅面板、廊架凉亭、标志路牌、广告牌、活动房屋、吊桥等;还可以用作装饰材料,如铺设在水泥桥面,砖墙外面,钢架表面等美化外观。
但是现有技术中制得的塑木材料,长时间使用过程中,很容易收到外部环境的影响进而收缩变形,严重影响正常使用,因此,我们提出了一种低收缩率塑木型材的制备方法。
发明内容
本发明提出了一种低收缩率塑木型材的制备方法,以解决上述背景技术中提出的问题。
本发明提出了一种低收缩率塑木型材的制备方法,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在120-150摄氏度,干燥程度使木料含水率在7-15%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌30-60分钟,木料、稳定合剂和增韧剂按重量比为8-14:1-3:2-4得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌30-60分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为5-10:5-10:2-5:0.1-0.3:0.1-0.2:0.05-0.2:0.05-0.1,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
进一步地,在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为10-14:2-4混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
进一步地,在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
进一步地,在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
进一步地,在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
进一步地,在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
进一步地,在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
进一步地,在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
本发明提出的一种低收缩率塑木型材的制备方法,有益效果在于:该方法通过改变塑木型材中的木料特性,提高木料的稳定性和强度,即通过添加酚醛树脂和三(壬苯基)亚磷酸钠,使材料能够保持结构的整体性和尺寸的稳定性,同时通过添加一系列能够加强型材整体强度和韧性的助剂,从而得到具有良好低收缩率塑木型材,使塑木型材可长时间运用在日常环境中,并且具有很好的强度。
具体实施方式
下面结合具体实施例来对本发明做进一步说明。
实施例1:
一种低收缩率塑木型材的制备方法,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在120摄氏度,干燥程度使木料含水率在7%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌30分钟,木料、稳定合剂和增韧剂按重量比为8:1:2得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌30分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为5:5:2:0.1:0.1:0.05:0.05,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
优选的,在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为10:2混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
优选的,在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
优选的,在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
优选的,在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
优选的,在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
优选的,在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
优选的,在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
实施例2:
一种低收缩率塑木型材的制备方法,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在132摄氏度,干燥程度使木料含水率在9%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌40分钟,木料、稳定合剂和增韧剂按重量比为10:2:3得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌40分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为7:7:3:0.2:0.1:0.1:0.07,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
优选的,在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为11:3混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
优选的,在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
优选的,在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
优选的,在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
优选的,在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
优选的,在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
优选的,在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
实施例3:
一种低收缩率塑木型材的制备方法,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在140摄氏度,干燥程度使木料含水率在13%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌50分钟,木料、稳定合剂和增韧剂按重量比为10:2:3得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌50分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为8:8:3:0.25:0.15:0.15:0.08,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
优选的,在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为13:3混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
优选的,在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
优选的,在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
优选的,在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
优选的,在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
优选的,在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
优选的,在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
实施例4:
一种低收缩率塑木型材的制备方法,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在150摄氏度,干燥程度使木料含水率在15%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌60分钟,木料、稳定合剂和增韧剂按重量比为14:3:4得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌60分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为10:10:5:0.3:0.2:0.2:0.1,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
优选的,在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为14:4混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
优选的,在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
优选的,在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
优选的,在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
优选的,在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
优选的,在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
优选的,在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种低收缩率塑木型材的制备方法,其特征在于,包括以下步骤:
S1:木料稳定性处理,选择木材进行粉碎处理,得到粉末状木料,将得到的粉末状木料放入到干燥窑内进行干燥脱脂,干燥温度控制在120-150摄氏度,干燥程度使木料含水率在7-15%停止干燥,并将干燥脱脂后的木料放入到搅拌器内,再向搅拌器内加入稳定合剂和增韧剂进行搅拌30-60分钟,木料、稳定合剂和增韧剂按重量比为8-14:1-3:2-4得到A物料,混合均匀后备用;
S2:向S1中搅拌均匀后的A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂搅拌30-60分钟,得到B物料,A物料中加入聚乙烯、PVC树脂粉(SG-7型)、填料剂、偶联剂、发泡剂、润滑剂和抗氧化剂按重量比为5-10:5-10:2-5:0.1-0.3:0.1-0.2:0.05-0.2:0.05-0.1,完成后备用;
S3:将S2中得到的B物料利用双螺杆挤出机熔融共混,挤出造粒后,将所得粒料加入到挤出机中挤出,即得到成型的低收缩率塑木型材。
2.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S1中的热稳定合剂为酚醛树脂和三(壬苯基)亚磷酸钠按重量比为10-14:2-4混合制备而成,其中酚醛树脂具有耐高温性,提高了塑木型材的耐高温性,使其在环境中能够保持结构的整体性和尺寸的稳定性,同时三(壬苯基)亚磷酸钠的热氧稳定效率高,加强了酚醛树脂的稳定性能,提高了防老效能,有利于降低材料的收缩性。
3.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S1中的增韧剂为液体丁腈橡胶、聚乙烯醇缩丁醛中的一种或两种的混合物,增韧剂降低了木材的脆性,增大韧性,提高承载强度。
4.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S2中的填料剂为玻璃纤维、石英石粉、粉煤灰、碳酸钙粉中的一种或其中几种的混合物。
5.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S2中的抗氧化剂为二苯胺或者对苯二胺,防止型材在日常使用过程中氧化进而产生收缩等形变。
6.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S2中的偶联剂为马来酸酐改性聚烯烃,改善塑木型材的截面结合,提高强度,减少吸水保持良好的机械性能,避免在日常使用过程中产生收缩或膨胀等形变。
7.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S2中的发泡剂为偶氮二酰胺,有利于减小型材的密度和制品重量。
8.根据权利要求1所述的一种低收缩率塑木型材的制备方法,其特征在于:在S2中的润滑剂为硬脂酸锌,改善生产过程中的流动性能,提高生产效率,减小型材边缘磨损。
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Application publication date: 20191011 |
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