CN112480486A - 一种石墨烯天然橡胶抗菌儿童爬行复合材料及其制备方法 - Google Patents
一种石墨烯天然橡胶抗菌儿童爬行复合材料及其制备方法 Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 93
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Abstract
本发明提供一种石墨烯天然橡胶抗菌儿童爬行复合材料及其制备方法,包括以下重量份原料:天然橡胶70~100份,三元乙丙橡胶18~25份,纳米活性介质3~6份,石墨烯0.5~10份,氯化锌5~10份,硫化活性剂3~6份,表面活性剂0.4~2份,无味交联剂0.8~2.5份,发泡剂2.5~5份。所述复合材料制备方法如下:将用表面活性剂处理的石墨烯加热后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,得到混合原胶;向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质进行再次混炼硫化交联,即得石墨烯石墨烯天然橡胶抗菌儿童爬行复合材料,该复合材料具有弹性高、耐磨性好,抗菌,无毒,不易变形,易清洁等优点,从而其使用效果更好。
Description
技术领域
本发明属于橡胶基复合材料技术领域,具体涉及一种石墨烯天然橡胶抗菌儿童爬行复合材料及其制备方法。
背景技术
石墨烯是一种以sp2杂化连接的碳原子紧密堆积成单层二维蜂窝状晶格结构的新材料。石墨烯具有优异的光学、电学、力学特性,在材料学、微纳加工、能源、生物医学和药物传递等方面具有重要的应用前景,其作为橡胶的补强材料,少量填充即可大幅度提高橡胶的机械性能,并且能展现其良好的电、热特性,是一种非常理想的橡胶纳米材料。
橡胶材料是目前国民经济和高科技领域不可缺少和替代的关键材料之一,并广泛的应用于航空航天、军事、交通运输、高铁、电子信息、能源动力以及国家重大基础工程建设等领域。近年,随着科学技术的进步,对橡胶材料的要求也越来越高,新型橡胶材料不仅要具备高强度、高弹性等性能,同时还需要具备高耐磨、高耐油、耐高低温、寿命长等特点。因此开展石墨烯与橡胶复合材料的研究,对于提高我国橡胶产业的整体水平意义重大。然而,实际生产加工过程中,石墨烯在橡胶基体中的分散一直是困扰石墨烯橡胶复合材料的瓶颈,由于表面张力和自聚集的原因,橡胶和石墨烯之间结合力很低,极易相分离,从而是复合材料的性能大打折扣,远达不到预期的效果。
爬行对于婴儿的身体健康以及平衡能力的培养至关重要,而爬行垫就是为儿童爬行创造优质条件。传统的爬行用品一般是毛毯,被褥,但是这些用品有许多问题:一,厚重,不容易携带;二,易脏,清洗费时费力;三,吸湿,容易返潮。所以市场上出现了一种称作“婴儿爬行垫”的宝宝爬行用品,这种产品会残留对人体有害的化学物质,对宝宝的身体伤害极大,这种有害的化学物质曾在拼接式的爬行垫当中检测出来。
为了解决以上问题,开发一种适合儿童使用的石墨烯天然橡胶抗菌儿童爬行复合材料是很有必要的。
发明内容
基于以上现有技术,本发明的目的在于提供一种石墨烯天然橡胶抗菌儿童爬行复合材料及其制备方法,该复合材料具有弹性高、耐磨性好,抗菌,无毒,不易变形,易清洁等优点,从而其使用效果更好。
为了实现以上目的,本发明采用的技术方案为:
一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶70~100份,三元乙丙橡胶18~25份,纳米活性介质3~6份,石墨烯0.5~10份,氯化锌5~10份,硫化活性剂3~6份,表面活性剂0.4~2份,无味交联剂0.8~2.5份,发泡剂2.5~5份。
为了更好的实现本发明,进一步的,所述复合材料的基本组成包括以下重量份原料:天然橡胶75份,三元乙丙橡胶20份,纳米活性介质5份,石墨烯1份,氯化锌5份,硫化活性剂4份,表面活性剂1.2份,无味交联剂1.2份,发泡剂2.5份。
为了更好的实现本发明,进一步的,所述硫化活性剂为硬脂酸锌,表面活性剂为硬脂酸。
为了更好的实现本发明,进一步的,所述无味交联剂为双叔丁基过氧化二异丙基苯,发泡剂为偶氮二甲酰胺、二苯磺酰肼醚、对甲苯磺酰肼中的一种。
为了更好的实现本发明,进一步的,所述纳米活性介质为纳米活性炭。
本发明还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、将用表面活性剂处理的石墨烯加热后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质进行再次混炼硫化交联,即得石墨烯石墨烯天然橡胶抗菌儿童爬行复合材料。
为了更好的实现本发明,进一步的,步骤1中表面活性剂处理的石墨烯具体步骤为,将表面活性剂和去离子水按照0.3~1.0:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为110~160℃,加入量为5~10mg/ml,加入后搅拌1~3h,得到表面活性剂处理的石墨烯。
为了更好的实现本发明,进一步的,步骤1中混炼温度为130~180℃,混炼时间为1~6h。
为了更好的实现本发明,进一步的,步骤2中硫化交联时,先将步骤1得到的混合原胶在平板硫化机上在140~180℃,8~10Mpa压力下,热压10~20min,然后在烘箱中进行二次硫化,硫化条件为180~185℃,2~3h,200~205℃,1~2h,220~225℃,0.5~1h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
有益效果
本发明的有益效果如下:
(1)本发明的复合材料中含有石墨烯,其作为橡胶的补强材料,少量填充即可大幅度提高橡胶的机械性能,并且能展现其良好的电、热特性,是一种非常理想的橡胶纳米材料。
(2)本发明的复合材料具有抗菌效果,一般PVC,橡胶橡胶地板材料本身没有抗菌的功能,一般的抗菌地板是在地材表面耐磨层添加银离子材料,不耐久,成本高。而本发明新型的抗菌橡胶地板是在橡胶地板材料中整体添加了特殊的无毒无污染的纳米材料,达到强抗菌效果。
(3)本发明的复合材料选用的交联剂为双叔丁基过氧化二异丙基苯,操作过程中及制成的制品中无刺激性臭味,特别适用于室内的儿童爬行垫,安全、无毒,同时,可在混炼时加入胶料使用,在同等交联效果情况下,添加量仅为DCP的2/3,降低了用量,更加环保。发泡剂为偶氮二甲酰胺、二苯磺酰肼醚、对甲苯磺酰肼中的一种,储存时性质稳定,无毒,不燃,与橡胶混炼时相容性较好,同时分解产生氮气,形成闭孔或联孔,收缩率小,不易变形,孔隙不易塌陷。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明。
实施例1
本实施例提供一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶70份,三元乙丙橡胶18份,纳米活性介质3份,石墨烯1份,氯化锌5份,硫化活性剂3份,表面活性剂0.4份,无味交联剂0.8份,发泡剂2.5份。
本实施例还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、用表面活性剂处理石墨烯,将表面活性剂和去离子水按照0.3:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为110℃,加入量为5mg/ml,加入后搅拌3h,得到表面活性剂处理的石墨烯,加热温度为130℃后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,混炼时间为6h,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质在平板硫化机上在140℃,8Mpa压力下,热压20min,然后在烘箱中进行二次硫化,硫化条件为180℃,3h,200℃,2h,220℃,1h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
实施例2
本实施例提供一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶80份,三元乙丙橡胶20份,纳米活性介质4份,石墨烯5份,氯化锌6份,硫化活性剂4份,表面活性剂1份,无味交联剂1.0份,发泡剂3份。
本实施例还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、用表面活性剂处理石墨烯,将表面活性剂和去离子水按照0.4:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为120℃,加入量为6mg/ml,加入后搅拌3h,得到表面活性剂处理的石墨烯,加热温度为140℃后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,混炼时间为5h,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质在平板硫化机上在150℃,9Mpa压力下,热压18min,然后在烘箱中进行二次硫化,硫化条件为182℃,3h,203℃,2h,223℃,1h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
实施例3
本实施例提供一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶75份,三元乙丙橡胶20份,纳米活性介质5份,石墨烯5份,氯化锌8份,硫化活性剂5份,表面活性剂1.2份,无味交联剂1.2份,发泡剂3.0份。
本实施例还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、用表面活性剂处理石墨烯,将表面活性剂和去离子水按照0.6:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为130℃,加入量为7mg/ml,加入后搅拌2h,得到表面活性剂处理的石墨烯,加热温度为150℃后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,混炼时间为4h,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质在平板硫化机上在160℃,9Mpa压力下,热压16min,然后在烘箱中进行二次硫化,硫化条件为183℃,2.5h,203℃,1.5h,223℃,0.7h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
实施例4
本实施例提供一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶90份,三元乙丙橡胶23份,纳米活性介质5份,石墨烯8份,氯化锌8份,硫化活性剂5份,表面活性剂1.5份,无味交联剂2.0份,发泡剂4.0份。
本实施例还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、用表面活性剂处理石墨烯,将表面活性剂和去离子水按照0.8:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为150℃,加入量为8mg/ml,加入后搅拌1h,得到表面活性剂处理的石墨烯,加热温度为160℃后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,混炼时间为3h,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质在平板硫化机上在170℃,10Mpa压力下,热压12min,然后在烘箱中进行二次硫化,硫化条件为184℃,2h,204℃,1h,224℃,0.5h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
实施例5
本实施例提供一种石墨烯天然橡胶抗菌儿童爬行复合材料,所述复合材料的基本组成包括以下重量份原料:天然橡胶100份,三元乙丙橡胶25份,纳米活性介质6份,石墨烯10份,氯化锌10份,硫化活性剂6份,表面活性剂2份,无味交联剂2.5份,发泡剂5份。
本实施例还提供一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,包括以下步骤:
步骤1、用表面活性剂处理石墨烯,将表面活性剂和去离子水按照1.0:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为160℃,加入量为10mg/ml,加入后搅拌1h,得到表面活性剂处理的石墨烯,加热温度为180℃后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,混炼时间为1h,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质在平板硫化机上在180℃,10Mpa压力下,热压10min,然后在烘箱中进行二次硫化,硫化条件为185℃,2h,205℃,1h,225℃,0.5h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
对上述实施例1至5制得的石墨烯天然橡胶抗菌儿童爬行复合材料进行力学性能够测试,测试方法如下:
(1)邵A硬度:用邵氏硬度计进行检测,具有一定形状的钢制压针﹐在试验力作用下垂直压入试样表面﹐当压足表面与试样表面完全贴合时﹐压针尖端面相对压足平面有一定的伸出长度L(即压针扎进被测物的深度),以L值的大小来表征邵氏硬度的大小,L值越大﹐表示邵尔硬度越低﹐反之越高。计算公式为HA=100-L/0.025和HD=100-L/0.025。
(2)撕裂强度:根据GB 6039-85,撕裂强度的定义为:在于试样主轴平行的方向上,拉伸试样直至开裂时的最大力,按照GB529和GB530的方法准备试样,测试步骤(1)硫化后的试片(厚2.0±0.3mm)应在标准室温下停放(不少于6小时,不超过15天);(2)采取试样时,裁刀撕裂角等分线的方向与压延方向一致;(3)将试样垂直夹于上下夹持器重一定深度,并且使其在平等的位置上充分均匀夹紧;(4)调好拉伸速度(夹持器中以500±100mm/min的速度在运行)开动试验机,即可对试样施加一个逐渐增加的牵引力,直至试样被撕断后停机。
(3)拉伸强度:按照ASTM D-412标准的方法进行。
(4)模量:按照HG/T3321-2012标准的方法进行。
测试结果如下:
表1测试结果
测试结果 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 |
邵A硬度 | 65 | 67 | 70 | 68 | 66 |
撕裂强度kN/m | 96 | 98 | 112 | 107 | 105 |
拉伸强度Mpa | 50 | 51 | 55 | 54 | 52 |
模量Mpa | 2.5 | 2.8 | 3.1 | 2.9 | 2.8 |
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种石墨烯天然橡胶抗菌儿童爬行复合材料,其特征在于,所述复合材料的基本组成包括以下重量份原料:天然橡胶70~100份,三元乙丙橡胶18~25份,纳米活性介质3~6份,石墨烯0.5~10份,氯化锌5~10份,硫化活性剂3~6份,表面活性剂0.4~2份,无味交联剂0.8~2.5份,发泡剂2.5~5份。
2.根据权利要求1所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料,其特征在于,所述复合材料的基本组成包括以下重量份原料:天然橡胶75份,三元乙丙橡胶20份,纳米活性介质5份,石墨烯1份,氯化锌5份,硫化活性剂4份,表面活性剂1.2份,无味交联剂1.2份,发泡剂2.5份。
3.根据权利要求1所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料,其特征在于,所述硫化活性剂为硬脂酸锌,表面活性剂为硬脂酸。
4.根据权利要求1所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料,其特征在于,所述无味交联剂为双叔丁基过氧化二异丙基苯,发泡剂为偶氮二甲酰胺、二苯磺酰肼醚、对甲苯磺酰肼中的一种。
5.根据权利要求1所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料,其特征在于,所述纳米活性介质为纳米活性炭。
6.一种权利要求1或2所述的石墨烯天然橡胶抗菌儿童爬行复合材料的制作方法,其特征在于,包括以下步骤:
步骤1、将用表面活性剂处理的石墨烯加热后,依次加入天然橡胶和三元乙丙橡胶,在混炼机中进行混炼,过滤后得到混合原胶;
步骤2、向混合原胶中加入无味交联剂、发泡剂、氧化锌、硫化活性剂和纳米活性介质进行再次混炼硫化交联,即得石墨烯石墨烯天然橡胶抗菌儿童爬行复合材料。
7.根据权利要求6所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,其特征在于,步骤1中表面活性剂处理的石墨烯具体步骤为,将表面活性剂和去离子水按照0.3~1.0:100的重量比进行配比,混合均匀后逐步加入石墨烯,加入条件为110~160℃,加入量为5~10mg/ml,加入后搅拌1~3h,得到表面活性剂处理的石墨烯。
8.根据权利要求6所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,其特征在于,步骤1中混炼温度为130~180℃,混炼时间为1~6h。
9.根据权利要求6所述的一种石墨烯天然橡胶抗菌儿童爬行复合材料的制备方法,其特征在于,步骤2中硫化交联时,先将步骤1得到的混合原胶在平板硫化机上在140~180℃,8~10Mpa压力下,热压10~20min,然后在烘箱中进行二次硫化,硫化条件为180~185℃,2~3h,200~205℃,1~2h,220~225℃,0.5~1h,得到所述石墨烯天然橡胶抗菌儿童爬行复合材料。
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