CN116731451A - 一种竹木纤维墙板及其制备工艺 - Google Patents
一种竹木纤维墙板及其制备工艺 Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 42
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Abstract
本发明提供了一种竹木纤维墙板及制备工艺,所述竹木纤维墙板的基材包括以下重量份数的组分:80~100份PVC颗粒、30~50份碳酸钙粉、15~30份竹木纤维粉、5~10份纳米二氧化硅、8~20份纳米氧化铝、5~10份三(2‑氯乙基)磷酸酯、3~5份稳定剂、0.5~0.9份发泡剂、6~10份发泡调节剂、0.15‑0.2份硬脂酸和0.6‑1.2份PE蜡和6‑10份抗冲改性剂。本发明通过添加纳米氧化铝和三(2‑氯乙基)磷酸酯,增强竹木纤维墙板基材的耐火性能,添加无机填料纳米二氧化硅,可以增强基材的耐磨性能,进一步添加适当比例的抗冲改性剂,在提高耐火性能的同时保证了墙板的力学性能,有利于延长使用寿命。
Description
技术领域
本发明涉及复合材料技术领域,具体而言,涉及一种竹木纤维墙板及其制备工艺。
背景技术
随着生活水平的提高,人们对室内装修材料的环保品质要求越来越高,竹木纤维集成墙板由于其装修速度快和环竹木纤维材料是以竹纤维为主要原料,经过适当的处理使其与合成纤维复合成的高性能、高附加值的绿色环保复合材料,通过竹木纤维材料制成的墙板具有防水性能、防污性能、防蛀性能强的优点,然而现有的墙板存在耐磨性能和耐火性能较差等缺点。
发明内容
本发明的目的就是提出一种竹木纤维墙板及其制备工艺,以解决现有技术存在的上述问题。
本发明提出了一种竹木纤维墙板,所述竹木纤维墙板的基材包括以下重量份数的组分:80~100份PVC颗粒、30~50份碳酸钙粉、15~30份竹木纤维粉、5~10份纳米二氧化硅、8~20份纳米氧化铝、5~10份三(2-氯乙基)磷酸酯、3~5份稳定剂、0.5~0.9份发泡剂、6~10份发泡调节剂、0.15-0.2份硬脂酸和0.6-1.2份PE蜡、6-10份抗冲改性剂。
进一步地,上述竹木纤维墙板中,所述纳米氧化铝的粒径为300-500nm,所述纳米二氧化硅的粒径为400-800nm。
进一步地,上述竹木纤维墙板中,所述竹木纤维粉的粒径为10-20μm。
进一步地,上述竹木纤维墙板中,所述稳定剂为钙锌稳定剂、钡锌稳定剂、稀土稳定剂或者有机锡稳定剂。
进一步地,上述竹木纤维墙板中,所述发泡剂为偶氮二甲酰胺或者偶氮二甲酰胺与碳酸氢钠的复合发泡剂。
进一步地,上述竹木纤维墙板中,所述抗冲改性剂为氯化聚乙烯、MBS和ACR中的至少一种。
本发明还提供了一种竹木纤维墙板的制备工艺,包括以下步骤:
步骤1,将PVC颗粒、钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅放入混料机中,根据PVC颗粒粒径与钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅的粒径关系选择以第一预设转速、第二预设转速或第三预设转速进行混料;再将三(2-氯乙基)磷酸酯,稳定剂、发泡剂、发泡调节剂、硬脂酸和PE蜡加入后,以第二预设转速V2搅拌混合得到均匀的混料;
步骤2,将所述步骤1得到的混料在160-170℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;
步骤3,对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
进一步的,上述竹木纤维墙板的制备工艺中,所述第一预设转速为50-100r/min,所述第二预设转速为120-200r/min,所述第三预设转速为250-400r/min,所述第四预设转速为1000-2000r/min。
进一步的,上述竹木纤维墙板的制备工艺中,当所述PVC颗粒的粒径D1与钙粉粒径D2、竹木纤维粉D3、纳米氧化铝D4、纳米二氧化硅的粒径D5之间满足:4·(D2+D3+D4+D5)≤D1≤6·(D2+D3+D4+D5)时,混料机以第一预设转速搅拌;当6·(D2+D3+D4+D5)<D1≤8·(D2+D3+D4+D5)时,混料机以第二预设转速搅拌;当D1>8·(D2+D3+D4+D5)时,混料机以第三预设转速搅拌。
进一步的,上述竹木纤维墙板的制备工艺中,还包括:步骤4,对所述步骤3挤出的竹木纤维墙板基材进行PVC覆膜并对覆膜后的成品性能测试验。
本发明提供的竹木纤维墙板及制备工艺,通过添加纳米氧化铝和三(2-氯乙基)磷酸酯,以增强竹木纤维墙板基材的耐火性能,同时添加无机填料纳米二氧化硅,可以增强基材的耐磨性能,进一步添加适当比例的抗冲改性剂,在提高耐火性能的同时保证了墙板的力学性能,有利于延长使用寿命。
具体实施方式
以下所述是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和修饰,这些改进和修饰也视为本发明的保护范围。
本发明中的竹木纤维墙板的基材包括以下重量份数的组分:80~100份PVC颗粒、30~50份碳酸钙粉、15~30份竹木纤维粉、5~10份纳米二氧化硅、8~20份纳米氧化铝、5~10份三(2-氯乙基)磷酸酯、3~5份稳定剂、0.5~0.9份发泡剂、6~10份发泡调节剂、0.15-0.2份硬脂酸和0.6-1.2份PE蜡、6-10份抗冲改性剂。
具体而言,所述稳定剂为钙锌稳定剂、钡锌稳定剂、稀土稳定剂或者有机锡稳定剂。
所述发泡剂为偶氮二甲酰胺或者偶氮二甲酰胺与碳酸氢钠的复合发泡剂。所述发泡剂为偶氮二甲酰胺或者偶氮二甲酰胺与碳酸氢钠的复合发泡剂。
所述抗冲改性剂为氯化聚乙烯、MBS和ACR中的至少一种,能保证基材的力学强度。
钙粉的粒径为1000-3000nm.所述纳米氧化铝的粒径为300-500nm,所述纳米二氧化硅的粒径为400-800nm,所述竹木纤维粉的粒径为10-20μm,经过粒度级配,使得纳米二氧化硅和纳米氧化铝能均匀填充至竹木纤维粉的孔隙结构中,以增强材料的阻燃性能的同时增强其耐磨性能。
尤其是,通过添加纳米氧化锌和三(2-氯乙基)磷酸酯,并控制二者的配比,有利于改善材料的阻燃性能。
本发明还提供了一种竹木纤维墙板的制备工艺,包括以下步骤:
步骤1,将PVC颗粒、钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅放入混料机中,根据PVC颗粒粒径与钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅的粒径关系选择以第一预设转速、第二预设转速或第三预设转速进行混料;再将三(2-氯乙基)磷酸酯,稳定剂、发泡剂、发泡调节剂、硬脂酸和PE蜡加入后,以第四预设转速搅拌混合得到均匀的混料;根据PVC颗粒的不同控制转速,能进一步有效促进各组分能够混合均匀,确保纳米二氧化硅和纳米氧化锌均匀填充至竹木纤维粉中。
优选的,本实施例中,当所述PVC颗粒的粒径D1与钙粉粒径D2、竹木纤维粉D3、纳米氧化铝D4、纳米二氧化硅的粒径D5之间满足:4·(D2+D3+D4+D5)≤D1≤6·(D2+D3+D4+D5)时,混料机以第一预设转速搅拌;当6·(D2+D3+D4+D5)<D1≤8·(D2+D3+D4+D5)时,混料机以第二预设转速搅拌;当D1>8·(D2+D3+D4+D5)时,混料机以第三预设转速搅拌。本实施例中,根据PVC颗粒粒径大小与其他几种粉末组分的颗粒大小的关系,选择合适的搅拌速度,有利于各组分的均匀混合,从而有利于挤出材质均匀光滑的竹木纤维墙板。
进一步的,所述第一预设转速为50-100r/min,所述第二预设转速为120-200r/min,所述第三预设转速为250-400r/min,所述第四预设转速为1000-2000r/min。
步骤2,将所述步骤1得到的混料在160-170℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;挤出机挤出形成PVC墙板或PVC线条。
步骤3,对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
上述实施例中,还包括:步骤4,对所述步骤3挤出的竹木纤维墙板基材进行PVC覆膜并对覆膜后的成品性能测试验。
具体而言,将挤出的基材进行PVC覆膜并对覆膜后的成品进行阻燃性能、剥离强度和弯曲强度的性能测试。
下面以几个实施例详细描述本发明:
实施例1
将80份粒径为125μm的PVC颗粒、粒径分别为3000nm、20μm、500nm、600nm的钙粉30份、竹木纤维粉15份、纳米氧化铝10份、纳米二氧化硅5份放入混料机中以第一预设转速50r/min进行混料;再将5份三(2-氯乙基)磷酸酯,3份稳定剂、0.5份发泡剂、6份发泡调节剂、0.15份硬脂酸和6份PE蜡加入后,以2000r/min搅拌混合得到均匀的混料;
将所述步骤1得到的混料在160℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;
对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
实施例2
将粒径为155μm的PVC颗粒90份、粒径分别为1000nm、20μm、500nm、800nm的钙粉40份、竹木纤维粉25份、纳米氧化铝15份、纳米二氧化硅8份放入混料机中以第一预设转速400r/min进行混料;再将8份三(2-氯乙基)磷酸酯,4份稳定剂、0.7份发泡剂、8份发泡调节剂、0.18份硬脂酸和8份PE蜡加入后,以1500r/min搅拌混合得到均匀的混料;
将所述步骤1得到的混料在165℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;
对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
实施例3
将100份粒径为140μm的PVC颗粒、粒径分别为1000nm、15μm、400nm、400nm的钙粉50份、竹木纤维粉30份、纳米氧化铝20份、纳米二氧化硅10份放入混料机中以第一预设转速150r/min进行混料;再将10份三(2-氯乙基)磷酸酯,5份稳定剂、0.9发泡剂、10份发泡调节剂、0.2份硬脂酸和10份PE蜡加入后,以1000r/min搅拌混合得到均匀的混料;
将所述步骤1得到的混料在170℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;
对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
为突出本发明的有益效果,现针对实施例1设置以下对比例:
对比例1
与实施例1相同,区别仅在于为添加三(2-氯乙基)磷酸酯、纳米氧化铝和纳米二氧化硅。
对比例2
与实施例2相同,区别仅在于纳米氧化铝的粒径为800nm。
对比例3
与实施例3相同,区别仅在于,未添加抗冲改性剂。
取实施例1-3与对比例1-2制备的板材进行阻燃性能试验结果如下表1所示:
可以看出:由于本发明实施例中,配方中添加了纳米氧化铝和三(2-氯乙基)磷酸酯使制备的墙板具有更好的阻燃性,可以使得板材的阻燃性能显著提高;可以看出实施例1-3的板材燃烧增长速率指数、放热均显著低于对比例1的板材,表明本发明的配方使板材的阻燃性能显著提高,而对比例2中由于纳米氧化铝的粒径较大,虽然有一定的阻燃性能,但是效果不如实施例1-3。
对本发明实施例1-3与对比例1制备的墙板进行力学性能测试,测试结果如表2:
测试项目 | 指标 | 实施例1 | 实施例2 | 实施例3 | 对比例3 |
弯曲强度/MPa | 平均值≥20 | 29 | 31 | 30 | 14 |
从表2中可以看出,未添加抗冲改性剂的对比例3的PVC墙板整体弯曲强度低于指标要求,而添加了抗冲改性剂的实施例1至3的PVC墙板整体弯曲强度明显提升。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种竹木纤维墙板,其特征在于,所述竹木纤维墙板的基材包括以下重量份数的组分:80~100份PVC颗粒、30~50份碳酸钙粉、15~30份竹木纤维粉、5~10份纳米二氧化硅、8~20份纳米氧化铝、5~10份三(2-氯乙基)磷酸酯、3~5份稳定剂、0.5~0.9份发泡剂、6~10份发泡调节剂、0.15-0.2份硬脂酸、0.6-1.2份PE蜡和6-10份抗冲改性剂。
2.根据权利要求1所述的竹木纤维墙板,其特征在于,所述纳米氧化铝的粒径为300-500nm,所述纳米二氧化硅的粒径为400-800nm。
3.根据权利要求1所述的竹木纤维墙板,其特征在于,所述竹木纤维粉的粒径为10-20μm。
4.根据权利要求1所述的竹木纤维墙板,其特征在于,所述稳定剂为钙锌稳定剂、钡锌稳定剂、稀土稳定剂或者有机锡稳定剂。
5.根据权利要求1所述的竹木纤维墙板,其特征在于,所述发泡剂为偶氮二甲酰胺或者偶氮二甲酰胺与碳酸氢钠的复合发泡剂。
6.根据权利要求1所述的竹木纤维墙板,其特征在于,所述抗冲改性剂为氯化聚乙烯、MBS和ACR中的至少一种。
7.一种如权利要求1所述的竹木纤维墙板的制备工艺,其特征在于,包括以下步骤:
步骤1,将PVC颗粒、钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅放入混料机中,根据PVC颗粒粒径与钙粉、竹木纤维粉、纳米氧化铝、纳米二氧化硅的粒径关系选择以第一预设转速、第二预设转速或第三预设转速进行混料;再将三(2-氯乙基)磷酸酯,稳定剂、发泡剂、发泡调节剂、硬脂酸和PE蜡加入后,以第四预设转速搅拌混合得到均匀的混料;
步骤2,将所述步骤1得到的混料在160-170℃下加热至熔融状态,并在挤出机中完成竹木纤维墙板基材的挤出;
步骤3,对所述步骤2中挤出的竹木纤维墙板基材依次进行冷却、切割得到竹木纤维墙板基材成品。
8.根据权利要求7所述的竹木纤维墙板的制备工艺,其特征在于,所述第一预设转速为50-100r/min,所述第二预设转速为120-200r/min,所述第三预设转速为250-400r/min,所述第四预设转速为1000-2000r/min。
9.根据权利要求7所述的竹木纤维墙板的制备工艺,其特征在于,当所述PVC颗粒的粒径D1与钙粉粒径D2、竹木纤维粉D3、纳米氧化铝D4、纳米二氧化硅的粒径D5之间满足:4·(D2+D3+D4+D5)≤D1≤6·(D2+D3+D4+D5)时,混料机以第一预设转速搅拌;当6·(D2+D3+D4+D5)<D1≤8·(D2+D3+D4+D5)时,混料机以第二预设转速搅拌;当D1>8·(D2+D3+D4+D5)时,混料机以第三预设转速搅拌。
10.根据权利要求7所述的竹木纤维墙板的制备工艺,其特征在于,还包括:步骤4,对所述步骤3挤出的竹木纤维墙板基材进行PVC覆膜并对覆膜后的成品性能测试验。
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