CN108929512B - 一种轻质抗菌耐老化复合材料板材及其制备方法 - Google Patents

一种轻质抗菌耐老化复合材料板材及其制备方法 Download PDF

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CN108929512B
CN108929512B CN201810853533.2A CN201810853533A CN108929512B CN 108929512 B CN108929512 B CN 108929512B CN 201810853533 A CN201810853533 A CN 201810853533A CN 108929512 B CN108929512 B CN 108929512B
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雷文
史博
李恩东
周卓伟
钱哲宇
王静
黄巧生
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YANGZHOU SHENLONG ROPE INDUSTRY Co.,Ltd.
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Abstract

一种轻质抗菌耐老化复合材料板材由耐老化表层、轻质塑木结构层及抗菌防霉底层构成,结构层位于表层和底层之间。表层、结构层及底层分别形成不同的熔融料流,在一个复合机头内汇合经三层叠加、共挤并经过一矩形口模得到矩形平板材、再经高、中、低温分段冷却、定型而成。本发明设计合理,结构简单,生产制造方便,采用分层设计,表面层具有优良的耐紫外和热氧老化等特点,中间层在生产过程中将产生细微泡孔,降低了结构层的质量,同时改善了其刚性,确保了整个产品轻质高强不变形;和地面接触的底层重点解决了其防水、抗菌和防霉变等问题。因而,较其它塑木板材成本更低、刚性更大、耐老化及抗菌防霉变效果更好。

Description

一种轻质抗菌耐老化复合材料板材及其制备方法
技术领域
本发明一种轻质抗菌耐老化复合材料板材及其制备方法涉及的是一种复合材料、一种结构材料板材及其制备方法,可用以制作户外地板等,属于复合材料技术领域。
背景技术
近年来,随着人们环境保护意识的增强,原料来源广泛、环境友好、可再生、可循环使用的塑木材料越来越受到人们的重视。它是以锯末、木屑、竹屑、稻壳、麦秸、大豆皮、花生壳、甘蔗渣、棉秸秆等低值生物质纤维为主原料,与塑料合成的一种新型材料。它具有可塑性强、高环保性、无污染、无公害、可循环利用、可加工性好、安装简单、不龟裂,不膨胀、吸音效果好等优点,可替代木材或者塑料在各领域中的应用,其中户外地板是其最重要的产品之一。但户外地板在使用过程中存在老化和吸潮导致霉变等问题,为了解决此类问题,常规做法是在整个塑木板材中加入防老化剂和抗菌剂等,由于防老化剂及抗菌剂价格昂贵,如果在整个板材中使用无疑增大了塑木产品的成本,给其市场推广应用带来消极影响,同时,传统塑木地板比较笨重,运输、安装均不方便。
为了克服上述不足,更好地满足市场上对户外塑木材料的迫切需要,发明一种轻质抗菌耐老化复合材料板材及其制备方法十分必要。
发明内容
本发明的目的是发明一种轻质抗菌耐老化复合材料板材及其制备方法,该复合材料板材除具有一般塑木复合材料板材的多用途、可反复加工使用特点外,更具有耐老化、质轻、抗菌防霉变、成本较低、运输安装方便等特点。
一种轻质抗菌耐老化复合材料板材及其制备方法是采取以下方案实现的:
一种轻质抗菌耐老化复合材料板材由耐老化表层、轻质塑木结构层及抗菌防霉底层构成,轻质塑木结构层位于耐老化表层和抗菌防霉底层之间。
耐老化表层由ASA树脂、紫外线吸收剂、纳米碳化硅、纳米α-氧化铝、石墨粉及抗氧剂经挤出而成;轻质塑木结构层由聚乙烯、木粉、棉杆粉、氯化聚乙烯、钙粉、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打经挤出而成;抗菌防霉底层由聚乙烯、抗菌剂、石蜡、芦苇粉及草酸经挤出而成。
所述的一种轻质抗菌耐老化复合材料板材为耐老化表层、轻质塑木结构层及抗菌防霉底层分别形成不同的熔融料流,在一个复合机头内汇合经三层叠加、共挤并经过一矩形口模得到矩形平板材,再经高、中、低温分段冷却、定型而成。
所述的紫外线吸收剂为UV-531或UVP-327中的一种。
所述的纳米碳化硅,其粒径为40~80nm。
所述的纳米α-氧化铝,其粒径为10~30nm。
所述的石墨粉,其粒径为800~1200目。
所述的抗氧剂为β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯、四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯中的一种。
所述的木粉,其粒径为40~120目。
所述的棉杆粉,其粒径为140~200目。
所述的钙粉为轻质碳酸钙粉,其粒径为1600~2000目。
所述的抗菌剂为复配抗菌剂,由1,2-苯并异噻唑啉-3-酮与均三嗪两种杀菌剂按质量比1∶1复配而成,其杀菌活性成份包括异噻唑啉酮衍生物和有机含氮化合物两种。
所述的芦苇粉,其粒径为1~3mm。
一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂、纳米碳化硅、纳米α-氧化铝、石墨粉及抗氧剂按以下重量份数混合均匀后采用挤出机挤出成型耐老化表层,挤出温度195~215℃:
Figure BSA0000168033640000021
(2)将聚乙烯、木粉、棉杆粉、氯化聚乙烯、钙粉、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量份数混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度180~200℃:
Figure BSA0000168033640000022
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉及草酸按以下重量份数混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度170~180℃:
Figure BSA0000168033640000031
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度180~200℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过80~90℃、40~50℃及10~20℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
本发明一种轻质抗菌耐老化复合材料板材设计合理,结构简单,生产制造方便,和其它塑木复合材料板材相比,一种轻质抗菌耐老化复合材料板材采用分层设计,表面层具有优良的耐紫外和热氧老化等特点;中间层在生产过程中将产生细微泡孔,从而有效降低了结构层的质量,同时改善了结构层刚性,确保了整个产品轻质高强不变形;和地面接触的底层重点解决了其防水、抗菌和防霉变等问题。因而,一种轻质抗菌耐老化复合材料板材较其它塑木复合材料板材成本更低、刚性更大、耐老化及抗菌防霉变效果更好。
附图说明
以下将结合附图对本发明作进一步说明:
图1是一种轻质抗菌耐老化复合材料板材结构示意图。
1-耐老化表面层,2-塑木中间结构层,3-抗菌防霉变底层,4-ASA树脂,5-紫外线吸收剂,6-纳米碳化硅,7-纳米α-氧化铝,8-石墨粉,9-抗氧剂,10-聚乙烯,11-木粉,12-棉杆粉,13-氯化聚乙烯,14-钙粉,15-偶氮二羧酸二乙酯,16-硬脂酸,17-柠檬酸,18-小苏打,19-抗菌剂,20-石蜡,21-芦苇粉,22-草酸。
具体实施方式
参照附图1,一种轻质抗菌耐老化复合材料板材由耐老化表层1、轻质塑木结构层2及抗菌防霉底层3构成,轻质塑木结构层2位于耐老化表层1和抗菌防霉底层3之间。
耐老化表层1由ASA树脂4、紫外线吸收剂5、纳米碳化硅6、纳米α-氧化铝7、石墨粉8及抗氧剂9经挤出而成;轻质塑木结构层2由聚乙烯10、木粉11、棉杆粉12、氯化聚乙烯13、钙粉14、偶氮二羧酸二乙酯15、硬脂酸16、柠檬酸17及小苏打18经挤出而成;抗菌防霉底层3由聚乙烯10、抗菌剂19、石蜡20、芦苇粉21及草酸22经挤出而成。
所述的一种轻质抗菌耐老化复合材料板材为耐老化表层1、轻质塑木结构层2及抗菌防霉底层3分别形成不同的熔融料流,在一个复合机头内汇合经三层叠加、共挤并经过一矩形口模得到矩形平板材、再经高、中、低温分段冷却、定型而成。
所述的紫外线吸收剂5为UV-531或UVP-327中的一种。
所述的纳米碳化硅6,其粒径为40~80nm。
所述的纳米α-氧化铝7,其粒径为10~30nm。
所述的石墨粉8,其粒径为800~1200目。
所述的抗氧剂9为β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯、四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯中的一种。
所述的木粉11,其粒径为40~120目。
所述的棉杆粉12,其粒径为140~200目。
所述的钙粉为轻质碳酸钙粉14,其粒径为1600~2000目。
所述的抗菌剂为复配抗菌剂19,由1,2-苯并异噻唑啉-3-酮与均三嗪两种杀菌剂按质量比1∶1复配而成,其杀菌活性成份包括异噻唑啉酮衍生物和有机含氮化合物两种。
所述的芦苇粉21,其粒径为1~3mm。
实施例1:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UV-531)、纳米碳化硅(60nm)、纳米α-氧化铝(20nm)、石墨粉(1000目)及抗氧剂{β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度205℃:
Figure BSA0000168033640000041
(2)将聚乙烯、木粉(80目)、棉杆粉(170目)、氯化聚乙烯、钙粉(1800目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度190℃:
Figure BSA0000168033640000042
Figure BSA0000168033640000051
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(2mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度175℃:
Figure BSA0000168033640000052
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度190℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过85℃、45℃及15℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.1g/cm3,静曲强度35.88MPa,露天泥土地面摆放60天后,静曲强度保持率91.2%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例2:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UV-531)、纳米碳化硅(40nm)、纳米α-氧化铝(10nm)、石墨粉(800目)及抗氧剂{β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度195℃:
Figure BSA0000168033640000053
(2)将聚乙烯、木粉(40目)、棉杆粉(140目)、氯化聚乙烯、钙粉(1600目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度180℃:
Figure BSA0000168033640000054
Figure BSA0000168033640000061
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(1mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度170℃:
Figure BSA0000168033640000062
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度180℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过80℃、40℃及10℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度0.98g/cm3,静曲强度36.12MPa,露天泥土地面摆放60天后,静曲强度保持率87.9%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例3:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UVP-327)、纳米碳化硅(80nm)、纳米α-氧化铝(30nm)、石墨粉(1200目)及抗氧剂{四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度215℃:
Figure BSA0000168033640000063
(2)将聚乙烯、木粉(120目)、棉杆粉(200目)、氯化聚乙烯、钙粉(2000目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度200℃:
Figure BSA0000168033640000071
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(3mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度180℃:
Figure BSA0000168033640000072
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度200℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过90℃、50℃及20℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.01g/cm3,静曲强度32.58MPa,露天泥土地面摆放60天后,静曲强度保持率93.5%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例4:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UV-531)、纳米碳化硅(60nm)、纳米α-氧化铝(30nm)、石墨粉(800目)及抗氧剂{四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度215℃:
Figure BSA0000168033640000073
Figure BSA0000168033640000081
(2)将聚乙烯、木粉(120目)、棉杆粉(140目)、氯化聚乙烯、钙粉(1800目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度200℃:
Figure BSA0000168033640000082
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(3mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度170℃:
Figure BSA0000168033640000083
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度200℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过80℃、45℃及20℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度0.95g/cm3,静曲强度42.35MPa,露天泥土地面摆放60天后,静曲强度保持率93.1%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例5:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UVP-327)、纳米碳化硅(80nm)、纳米α-氧化铝(10nm)、石墨粉(1000目)及抗氧剂{四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度195℃:
Figure BSA0000168033640000091
(2)将聚乙烯、木粉(40目)、棉杆粉(170目)、氯化聚乙烯、钙粉(2000目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度180℃:
Figure BSA0000168033640000092
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(1mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度175℃:
Figure BSA0000168033640000093
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度180℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过85℃、50℃及10℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.15g/cm3,静曲强度33.88MPa,露天泥土地面摆放60天后,静曲强度保持率88.96%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例6:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UVP-327)、纳米碳化硅(40nm)、纳米α-氧化铝(20nm)、石墨粉(1200目)及抗氧剂{β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度205℃:
Figure BSA0000168033640000101
(2)将聚乙烯、木粉(80目)、棉杆粉(200目)、氯化聚乙烯、钙粉(1600目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度190℃:
Figure BSA0000168033640000102
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(2mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度180℃:
Figure BSA0000168033640000103
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度190℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过90℃、40℃及15℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度0.92g/cm3,静曲强度37.66MPa,露天泥土地面摆放60天后,静曲强度保持率90.0%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例7:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UV-531)、纳米碳化硅(60nm)、纳米α-氧化铝(30nm)、石墨粉(1200目)及抗氧剂{β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度205℃:
Figure BSA0000168033640000111
(2)将聚乙烯、木粉(120目)、棉杆粉(170目)、氯化聚乙烯、钙粉(2000目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度180℃:
Figure BSA0000168033640000112
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(1mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度180℃:
Figure BSA0000168033640000113
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度180℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过90℃、40℃及15℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.03g/cm3,静曲强度29.98MPa,露天泥土地面摆放60天后,静曲强度保持率93.2%,无表面变黄、开裂等老化现缘,底部无凹坑、霉点等现象。
实施例8:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UVP-327)、纳米碳化硅(80nm)、纳米α-氧化铝(10nm)、石墨粉(800)及抗氧剂{β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度205℃:
Figure BSA0000168033640000121
(2)将聚乙烯、木粉(120目)、棉杆粉(170目)、氯化聚乙烯、钙粉(1800目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度200℃:
Figure BSA0000168033640000122
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(2mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度170℃:
Figure BSA0000168033640000123
Figure BSA0000168033640000131
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度190℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过80℃、40℃及10℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.31g/cm3,静曲强度41.38MPa,露天泥土地面摆放60天后,静曲强度保持率89.6%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。
实施例9:一种轻质抗菌耐老化复合材料板材及其制备方法,其制备过程为:
(1)将ASA树脂、紫外线吸收剂(UVP-327)、纳米碳化硅(50nm)、纳米α-氧化铝(15nm)、石墨粉(900目)及抗氧剂{四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯}按以下重量混合均匀后采用挤出机挤出成型耐老化表层,挤出温度198℃:
Figure BSA0000168033640000132
(2)将聚乙烯、木粉(60目)、棉杆粉(160目)、氯化聚乙烯、钙粉(1700目)、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度185℃:
Figure BSA0000168033640000133
Figure BSA0000168033640000141
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉(1.3mm)及草酸按以下重量混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度178℃:
Figure BSA0000168033640000142
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度188℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过86℃、46℃及16℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材。
经检测,上述轻质抗菌耐老化复合材料板材密度1.18g/cm3,静曲强度40.12MPa,露天泥土地面摆放60天后,静曲强度保持率89.2%,无表面变黄、开裂等老化现象,底部无凹坑、霉点等现象。

Claims (1)

1.一种轻质抗菌耐老化复合材料板材的制备方法,其特征在于其制备过程为:
(1)将ASA树脂、紫外线吸收剂、纳米碳化硅、纳米α-氧化铝、石墨粉及抗氧剂按以下重量份数混合均匀后采用挤出机挤出成型耐老化表层,挤出温度195~215℃:
Figure FSB0000187114170000011
(2)将聚乙烯、木粉、棉杆粉、氯化聚乙烯、钙粉、偶氮二羧酸二乙酯、硬脂酸、柠檬酸及小苏打按以下重量份数混合均匀后采用第二台挤出机挤出成型轻质塑木结构层,挤出温度180~200℃:
Figure FSB0000187114170000012
(3)将聚乙烯、抗菌剂、石蜡、芦苇粉及草酸按以下重量份数混合均匀后采用第三台挤出机挤出成型抗菌防霉底层,挤出温度170~180℃:
Figure FSB0000187114170000013
(4)将耐老化表层、轻质塑木结构层、抗菌防霉底层趁热叠加并共挤通过一矩形口模,口模温度180~200℃,成型得到一上中下分别为耐老化表层、轻质塑木结构层及抗菌防霉底层的矩形平板材;
(5)将上述矩形平板材先后经过80~90℃、40~50℃及10~20℃水槽,分别冷却、定型后制成轻质抗菌耐老化复合材料板材;
所述的紫外线吸收剂为UV-531或UVP-327中的一种;
所述的纳米碳化硅,其粒径为40~80nm;
所述的纳米α-氧化铝,其粒径为10~30nm;
所述的石墨粉,其粒径为800~1200目;
所述的抗氧剂为β-(3,5-二叔丁基-4-羟基苯基)丙酸正十八碳醇酯、四[β-(3,5-二叔丁基4-羟基苯基)丙酸]季戊四醇酯中的一种;
所述的木粉,其粒径为40~120目;
所述的棉杆粉,其粒径为140~200目;
所述的钙粉为轻质碳酸钙粉,其粒径为1600~2000目;
所述的抗菌剂为复配抗菌剂,由1,2-苯并异噻唑啉-3-酮与均三嗪两种杀菌剂按质量比1∶1复配而成,其杀菌活性成份包括异噻唑啉酮衍生物和有机含氮化合物两种;
所述的芦苇粉,其粒径为1~3mm。
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