CN113291005A - 一种高性能输送带及其制备方法 - Google Patents
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Abstract
本申请涉及输送带的领域,具体公开了一种高性能输送带,所述输送带包括织物层,织物层两侧分别粘接有橡胶层,所述橡胶层原料由包括以下重量份的原料制备而成:三元乙丙橡胶40‑45份、氟硅橡胶10‑14份、丁腈橡胶10‑15份、芳纶纤维5‑7份、石墨烯‑纳米银复合材料4‑6份、复合稳定剂2.0‑2.5份、防老剂3‑5份、分散剂1.0‑1.5份、胶粘剂10‑15份、增塑剂4‑7份、硫化促进剂6‑8份、硬脂酸1.1‑1.6份、补强填料20‑25份,其具有能够提高输送带的抗菌性,从而提高食物安全的优点;另外,还提供一种高性能输送带的制备方法。
Description
技术领域
本申请涉及输送带领域,更具体地说,它涉及一种高性能输送带及其制备方法。
背景技术
输送带又称运输带,是用于皮带运输中起承载和运送物料作用的橡胶与纤维、金属复合制品,或者是塑料和织物复合的制品。输送带广泛应用于水泥、冶金、食品、化工等行业中输送距离较短、输送量较小的场合。
在食品行业中,输送带上常常由于食品碎渣掉落到输送带上,而使输送带上滋生细菌,给食品安全带来较大的隐患。相关技术中,有通过在输送带表面涂布抗菌涂层来提高输送带的抗菌性,从而使输送带上不易滋生细菌。
针对上述中的相关技术,发明人认为,抗菌涂层在时间较长时,容易被磨损,从而使输送带抗菌性能不足。
发明内容
为了提高输送带的抗菌性,从而提高食品的安全性,本申请的第一个目的是提供一种高性能输送带。
本申请的第二个目的是提供一种高性能输送带的制备方法。
本申请提供的一种高性能输送带,采用如下的技术方案:
一种高性能输送带,所述输送带包括织物层,织物层两侧分别粘接有橡胶层,所述橡胶层原料由包括以下重量份的原料制备而成:三元乙丙橡胶40-45份、氟硅橡胶10-14份、丁腈橡胶10-15份、芳纶纤维5-7份、石墨烯-纳米银复合材料4-6份、复合稳定剂2.0-2.5份、防老剂3-5份、分散剂1.0-1.5份、胶粘剂10-15份、增塑剂4-7份、硫化促进剂6-8份、硬脂酸1.1-1.6份、补强填料20-25份。
通过采用上述技术方案,通过在石墨烯上负载纳米银,可以增加纳米银的分散性,同样,在石墨烯上负载纳米银,可以阻止石墨烯的团聚,将石墨烯-纳米银复合材料添加到橡胶层内后,可以使纳米银均匀分散在橡胶层中,使橡胶层的各个部分的抗菌性一致,从而使输送带的抗菌性一致,通过使橡胶层具有抗菌性,在橡胶层有磨损时,由于其橡胶层的材质一致,从而磨损的位置也具有抗菌性;同时,石墨烯优异的导热性能与机械性能,使输送带的耐热性和抗拉伸性能均有提高。
优选的,按重量份数计,所述石墨烯-纳米银复合材料的制备步骤如下:
1)在5-7份浓度为0.2-0.4g/L的氧化石墨烯水分散液中,加入0.06-0.08份的氨基聚乙二醇、0.03-0.05份的EDC·HCl和0.07-0.10份的NHS,调节其pH为弱酸性,搅拌反应4-6h,过滤、洗涤,得到固体A;
2)在4-6份的水中加入固体A中,搅拌20-40min后,加入0.6-0.8份浓度为3-5g/L的硝酸银溶液,然后加热至沸腾,加入0.03-0.06份的还原剂,搅拌反应3-5h,过滤、洗涤、干燥,得到石墨烯-纳米银复合材料。
通过采用上述技术方案,EDC·HCl为1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐,NHS为N-羟基琥珀酰亚胺,氧化石墨烯通过氨基聚乙二醇进行功能化修饰后,使氧化石墨烯表面带有正电荷,然后银离子在还原剂的作用下进行还原得到带负电的纳米银,通过静电吸引作用,使氧化石墨烯较好的负载纳米银,得到石墨烯-纳米银复合材料。
优选的,所述步骤1)中的pH调节到5-6。
通过采用上述技术方案,在此pH下,氧化石墨烯较容易与氨基聚乙二醇反应。
优选的,所述步骤2)中的还原剂为柠檬酸钠或硼氢化钠。
通过采用上述技术方案,柠檬酸钠和硼氢化钠均易溶于水中,均能够使银离子较好的进行还原。
优选的,所述复合稳定剂为聚磷酸铵、碳酸钙和松焦油混合制成,其比例为聚磷酸铵:碳酸铵:松焦油=1:3:4。
通过采用上述技术方案,通过采用聚磷酸铵、碳酸钙和松焦油混合制备复合稳定剂,并且限定其配比,可以使得到的橡胶层的性能较好。
优选的,所述补强填料为氧化镁、氢氧化铝和碳酸钙混合制成,其比例为氧化镁:氢氧化铝:碳酸钙=2:3:2。
通过采用上述技术方案,选择氧化镁、氢氧化铝和碳酸钙作为补强填料,可以使橡胶层的耐磨性和机械性能增强。
优选的,所述分散剂为氯化石蜡。
通过采用上述技术方案,氯化石蜡作为分散剂,与橡胶层其他原料之间的配合较好。
优选的,所述硫化剂为二硫化二己内酰胺。
通过采用上述技术方案,二硫化二己内酰胺应用于本申请的橡胶层,可以使橡胶层的硫化效果较好。
优选的,所述织物层所用原料为腈纶织物。
通过采用上述技术方案,腈纶织物有较好的耐热性,弹性较好,在温度较高时,也不会影响其耐久性。并且腈纶织物表面不光滑,有树皮状沟槽纹路,较容易涂布PU胶,使腈纶织物能够与橡胶层的粘和性较好。
本申请提供的一种高性能输送带的制备方法,采用如下的方案:
一种高性能输送带的制备方法,其具体步骤如下:
1)取织物层烘干,备用;
2)将三元乙丙橡胶、氟硅橡胶、丁腈橡胶、芳纶纤维、石墨烯-纳米银复合材料、复合稳定剂、防老剂、分散剂、胶粘剂、增塑剂、硫化促进剂、硬脂酸和补强填料进行搅拌,混合均匀后,熔融挤出,得到橡胶层,烘干备用;
3)在织物层两面分别涂布PU胶,然后将橡胶层分别通过热压贴合到织物层两面,即可得到输送带。
通过采用上述技术方案,通过在织物层两面涂布PU胶,可以将橡胶层与织物层紧紧贴合在织物层两侧,从而使输送带表面具有较好的抗菌性能。
综上所述,本申请具有以下有益效果:
1、通过在石墨烯上负载纳米银,可以增加纳米银的分散性,同样,在石墨烯上负载纳米银,可以阻止石墨烯的团聚,将石墨烯-纳米银复合材料添加到橡胶层内后,可以使纳米银均匀分散在橡胶层中,使橡胶层的各个部分的抗菌性一致,从而使输送带的抗菌性一致,通过使橡胶层具有抗菌性,在橡胶层有磨损时,由于其橡胶层的材质一致,从而磨损的位置也具有抗菌性;同时,石墨烯优异的导热性能与机械性能,使输送带的耐热性和抗拉伸性能均有提高。
2、本申请制备的输送带均有较好的抗菌性能,其抗菌率均在75.6%以上,同时,制备的输送带的拉断伸长率均超过485%,同时其拉伸强度均达到78MPa以上。
具体实施方式
以下结合实施例对本申请作进一步详细说明。
原料
PU胶:生产厂家为安平县三联过滤器材有限公司,密度为1.27g/ml;
氧化石墨烯:通过hummers法制得;
防老剂:采用N,N′-二苯基对苯二胺,生产厂家为天元军融化工研究所新材料孵化器股份有限公司;
分散剂:采用氯化石蜡,生产厂家为广西中南油化工股份有限公司;
胶粘剂:采用氯丁酚醛胶粘剂,生产厂家为衡水恒创建工材料有限公司;
增塑剂:采用二丁酯,生产厂家为济南云佰汇生物科技有限公司;
硫化剂:采用二硫化二己内酰胺,生产厂家为宁波艾克姆新材料股份有限公司,含量≥97%。
制备例
制备例1
一种石墨烯-纳米银复合材料,其具体制备步骤如下:
1)在5kg浓度为0.4g/L的氧化石墨烯水分散液中,加入0.06kg的氨基聚乙二醇、0.05kg的EDC·HCl和0.07kg的NHS,调节其pH到6,搅拌反应4h,过滤、洗涤,得到固体A;
2)在6kg的水中加入固体A中,搅拌20min后,加入0.8kg浓度为3g/L的硝酸银溶液,然后加热至沸腾,加入0.06kg的还原剂,还原剂为柠檬酸钠,搅拌反应3h,过滤、洗涤、干燥,得到石墨烯-纳米银复合材料。
制备例2
一种石墨烯-纳米银复合材料,其具体制备步骤如下:
1)在7kg浓度为0.2g/L的氧化石墨烯水分散液中,加入0.08kg的氨基聚乙二醇、0.03kg的EDC·HCl和0.1kg的NHS,调节其pH到5,搅拌反应6h,过滤、洗涤,得到固体A;
2)在4kg的水中加入固体A中,搅拌40min后,加入0.6kg浓度为5g/L的硝酸银溶液,然后加热至沸腾,加入0.03kg的还原剂,还原剂为硼氢化钠,搅拌反应5h,过滤、洗涤、干燥,得到石墨烯-纳米银复合材料。
制备例3
一种石墨烯-纳米银复合材料,其具体制备步骤如下:
1)在5-7kg浓度为0.2-0.4g/L的氧化石墨烯水分散液中,加入0.07kg的氨基聚乙二醇、0.04kg的EDC·HCl和0.09kg的NHS,调节其pH到6,搅拌反应5h,过滤、洗涤,得到固体A;
2)在5kg的水中加入固体A中,搅拌30min后,加入0.7kg浓度为3-5g/L的硝酸银溶液,然后加热至沸腾,加入0.05kg的还原剂,还原剂为柠檬酸钠,搅拌反应4h,过滤、洗涤、干燥,得到石墨烯-纳米银复合材料。
实施例
实施例1-5
实施例1-5的高性能输送带,包括腈纶织物材质的织物层,织物层两面分别粘贴有橡胶层,其橡胶层的各原料和各原料用量如表1所示,其具体步骤如下:
1)取织物层烘干,备用;
2)将聚磷酸铵、碳酸钙和松焦油按照聚磷酸铵:碳酸铵:松焦油=1:3:4的比例进行搅拌,混合均匀后,得到复合稳定剂;
3)将氧化镁、氢氧化铝和碳酸钙按照氧化镁:氢氧化铝:碳酸钙=2:3:2的比例进行搅拌,混合均匀后,得到补强填料;
4)将三元乙丙橡胶、氟硅橡胶、丁腈橡胶、芳纶纤维、石墨烯-纳米银复合材料、复合稳定剂、防老剂、分散剂、胶粘剂、增塑剂、硫化促进剂、硬脂酸和补强填料进行搅拌,混合均匀后,熔融挤出,得到橡胶层,烘干备用;
5)在织物层两面分别涂布PU胶,然后将橡胶层分别通过热压贴合到织物层两面,即可得到输送带。
其中,石墨烯-纳米银复合材料来自制备例1。
表1实施例1-5的橡胶层的各原料和各原料用量(kg)
实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | |
三元乙丙橡胶 | 40 | 41 | 43 | 44 | 45 |
氟硅橡胶 | 14 | 13 | 12 | 11 | 10 |
丁腈橡胶 | 10 | 12 | 13 | 14 | 15 |
芳纶纤维 | 7 | 6.6 | 6 | 5.5 | 5 |
石墨烯-纳米银复合材料 | 4 | 4.5 | 5 | 5.5 | 6 |
复合稳定剂 | 6 | 5.5 | 5 | 4.5 | 4 |
防老剂 | 3 | 3.5 | 4 | 4.5 | 5 |
分散剂 | 1.5 | 1.4 | 1.3 | 1.2 | 1.0 |
胶粘剂 | 10 | 11 | 12 | 13 | 15 |
增塑剂 | 4 | 5 | 6 | 6.5 | 7 |
硫化促进剂 | 8 | 7.5 | 7 | 6.5 | 6 |
硬脂酸 | 1.1 | 1.2 | 1.3 | 1.4 | 1.6 |
补强填料 | 25 | 24 | 23 | 22 | 20 |
实施例6-9
实施例6-9的高性能输送带与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料的添加量依次为4kg、4.5kg、5kg、6kg,并且石墨烯-纳米银复合材料均来自制备例1,其余步骤均与实施例4相同。
实施例10
实施例10的高性能输送带与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料来自制备例2,其余步骤均与实施例4相同。
实施例11
实施例11的高性能输送带与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料来自制备例3,其余步骤均与实施例4相同。
对比例
对比例1
一种高性能输送带,与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料替换为等重量份的氧化石墨烯,其余步骤与实施例4均相同。
对比例2
一种高性能输送带,与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料替换为等重量份的纳米银,其余步骤与实施例4均相同。
对比例3
一种高性能输送带,与实施例4的不同之处在于,其橡胶层中添加的石墨烯-纳米银复合材料的添加量为0,其余步骤与实施例4均相同。
性能检测试验
检测方法
分别取实施例1-11和对比例1-3的制备的输送带,分别切割成面积为1cm2的块状体,然后按照以下方法进行检测,其检测结果如表2所示。
抗菌性检测:
1)取15只锥形瓶,标记为1-15号,然后均放入100mL的LB培养液,然后进行高温灭菌后,备用;
2)分别将实施例1-11和对比例1-3的输送带块状体依次放入1-14号锥形瓶中,然后在1-15号锥形瓶中分别注入已活化的大肠杆菌液0.1mL,振荡混匀,15号锥形瓶作为空白组,在恒温振荡器(25℃、150r/min)中培养24h,然后进行活菌计数,计算抗菌率。
拉断伸长率和拉伸强度:按照GB/T 33510-2017中的方法进行检测。
表2实施例1-11和对比例1-3的输送带的检测结果
拉断伸长率/% | 拉伸强度/MPa | 抗菌率/% | |
实施例1 | 487 | 79 | 75.6 |
实施例2 | 486 | 80 | 80.1 |
实施例3 | 488 | 82 | 83.3 |
实施例4 | 488 | 85 | 84.1 |
实施例5 | 485 | 85 | 84.5 |
实施例6 | 487 | 78 | 75.7 |
实施例7 | 489 | 80 | 80.3 |
实施例8 | 488 | 81 | 83.6 |
实施例9 | 490 | 85 | 84.4 |
实施例10 | 487 | 84 | 84.3 |
实施例11 | 489 | 85 | 84.2 |
对比例1 | 483 | 85 | 10.3 |
对比例2 | 484 | 76 | 43.1 |
对比例3 | 483 | 76 | 3.6 |
空白组 | —— | —— | 细菌总数增加 |
从表2的检测数据可以看出,本申请制备的输送带均有较好的抗菌性能,其抗菌率均在75.6%以上,同时,制备的输送带的拉断伸长率均超过485%,同时其拉伸强度均达到78MPa以上,可以达到实际应用的要求。
从实施例4和实施例6-9的数据可以看出,添加的石墨烯-纳米银复合材料逐渐增多时,其抗菌性逐渐增大,在其添加量达到5.5kg时,其抗菌率增大趋势变缓。
从实施例4和对比例1-4的检测数据可以看出,氧化石墨烯和纳米银对输送带的拉断伸长率无明显影响,但氧化石墨烯提高了其拉伸强度。氧化石墨烯和纳米银在抗菌性能上具有协同作用。
从实施例4和实施例10-11的检测数据可以看出,通过制备例1-3得到的石墨烯-纳米银复合材料制备的输送带,在拉断伸长率、拉伸强度和抗菌率上午明显区别。
本具体实施例仅仅是对本申请的解释,其并不是对本申请的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本申请的权利要求范围内都受到专利法的保护。
Claims (10)
1.一种高性能输送带,其特征在于,所述输送带包括织物层,织物层两侧分别粘接有橡胶层,所述橡胶层原料由包括以下重量份的原料制备而成:三元乙丙橡胶40-45份、氟硅橡胶10-14份、丁腈橡胶10-15份、芳纶纤维5-7份、石墨烯-纳米银复合材料4-6份、复合稳定剂2.0-2.5份、防老剂3-5份、分散剂1.0-1.5份、胶粘剂10-15份、增塑剂4-7份、硫化促进剂6-8份、硬脂酸1.1-1.6份、补强填料20-25份。
2.根据权利要求1所述的一种高性能输送带,其特征在于:按重量份数计,所述石墨烯-纳米银复合材料的制备步骤如下:
1)在5-7份浓度为0.2-0.4g/L的氧化石墨烯水分散液中,加入0.06-0.08份的氨基聚乙二醇、0.03-0.05份的EDC·HCl和0.07-0.10份的NHS,调节其pH为弱酸性,搅拌反应4-6h,过滤、洗涤,得到固体A;
2)在4-6份的水中加入固体A中,搅拌20-40min后,加入0.6-0.8份浓度为3-5g/L的硝酸银溶液,然后加热至沸腾,加入0.03-0.06份的还原剂,搅拌反应3-5h,过滤、洗涤、干燥,得到石墨烯-纳米银复合材料。
3.根据权利要求2所述的一种高性能输送带,其特征在于:所述步骤1)中的pH调节到5-6。
4.根据权利要求2所述的一种高性能输送带,其特征在于:所述步骤2)中的还原剂为柠檬酸钠或硼氢化钠。
5.根据权利要求1所述的一种高性能输送带,其特征在于:所述复合稳定剂为聚磷酸铵、碳酸钙和松焦油混合制成,其比例为聚磷酸铵:碳酸铵:松焦油=1:3:4。
6.根据权利要求1所述的一种高性能输送带,其特征在于:所述补强填料为氧化镁、氢氧化铝和碳酸钙混合制成,其比例为氧化镁:氢氧化铝:碳酸钙=2:3:2。
7.根据权利要求1所述的一种高性能输送带,其特征在于:所述分散剂为氯化石蜡。
8.根据权利要求1所述的一种高性能输送带,其特征在于:所述硫化剂为二硫化二己内酰胺。
9.根据权利要求1所述的一种高性能输送带,其特征在于:所述织物层所用原料为腈纶织物。
10.一种权利要求1-9任一所述的一种高性能输送带的制备方法,其特征在于:其具体步骤如下:
1)取织物层烘干,备用;
2)将三元乙丙橡胶、氟硅橡胶、丁腈橡胶、芳纶纤维、石墨烯-纳米银复合材料、复合稳定剂、防老剂、分散剂、胶粘剂、增塑剂、硫化促进剂、硬脂酸和补强填料进行搅拌,混合均匀后,熔融挤出,得到橡胶层,烘干备用;
3)在织物层两面分别涂布PU胶,然后将橡胶层分别通过热压贴合到织物层两面,即可得到输送带。
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