CN113462003A - 一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法 - Google Patents
一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法 Download PDFInfo
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Abstract
本发明公开一种用于膨胀橡胶低温分解的发泡剂复合物,包括发泡成分和活化助剂,所述发泡成分由AC发泡剂、OBSH发泡剂、H发泡剂、TSH发泡剂、碳酸氢钠发泡剂中的一种或几种组成,所述活化助剂由锌化合物、钠的弱酸盐、经过处理的尿素助剂、芳香族亚磺酸盐、硬脂酸中的一种或几种组成;本发明通过偶氮二甲酰胺和低温发泡剂复配,配合多种活化剂,通过共混和研磨工艺,制备出具有适合工业150℃应用,5min内分解完全,发气量高于180ml/g的发泡剂复合物,使膨胀胶在较低温度下可以达到较高的发泡倍率,兼顾流挂和发泡高度,同时膨胀胶内部的泡孔分散均匀,膨胀胶表面光滑细腻,性价比较高。
Description
技术领域
本发明涉及复合材料制备技术领域,尤其涉及一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法。
背景技术
橡胶发泡是一个重要的工艺,发泡橡胶可以更轻,性价比更高,同时具有良好的隔音减震功能,随着各个主机厂节能和降本增效的有效推进,烘烤温度均呈现不断下降的趋势,膨胀橡胶的发泡温度需配合主机厂的烘烤温度而不断降低,在制备发泡橡胶材料过程中,发泡剂是影响橡胶发泡的主要原材料,制备一种可低温分解的发泡剂迫在眉睫;
OBSH、TSH和碳酸氢钠是工业中常用的发泡剂,分解温度较低,但发气量较小,膨胀胶的发泡倍率难以满足要求,发泡剂AC由于价格较低以及高发气量是橡胶加工业中最常用的发泡剂,但偶氮二甲酰胺的分解温度在200-220℃,温度较高,一般通过几种发泡剂复配,或加入适量的活化剂促进其分解,降低分解温度,加快分解速率,除分解温度和发气量两个重要指标外,快速分解也是一个重要因素,严重影响膨胀胶的发泡高度和流挂问题,另外,泡孔均匀度和表面粗糙度也值得关注,公开号为CN106009026A的专利申请公开了一种发泡剂的制备方法,使发泡剂的分解温度降低到合理的适合工业应用的温度,同时降低了发泡产品中氨气释放量,但该专利中仅提及了偶氮二甲酰胺分解温度,未关注发气量、分解速率、泡孔均匀度、表面粗糙度等问题;
目前,复配一种或几种发泡剂,配合适量的活化剂,将分解温度降低到合理的适合工业应用的温度,同时满足合适的发气量,分解速率,泡孔均匀度,表面粗糙度的发泡剂还鲜有报道,因此,本发明提出一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法以解决现有技术中存在的问题。
发明内容
针对上述问题,本发明的目的在于提出一种用于膨胀橡胶低温分解的发泡剂复合物及其制备方法,该方法制备的发泡剂复合物能降低偶氮二甲酰胺的分解温度,且发气量高,分解速率快,使膨胀胶泡孔均匀且表面光滑。
为了实现本发明的目的,本发明通过以下技术方案实现:一种用于膨胀橡胶低温分解的发泡剂复合物,包括发泡成分和活化助剂,所述发泡成分由AC发泡剂、OBSH发泡剂、H发泡剂、TSH发泡剂、碳酸氢钠发泡剂中的一种或几种组成,所述活化助剂由锌化合物、钠的弱酸盐、经过处理的尿素助剂、芳香族亚磺酸盐、硬脂酸中的一种或几种组成。
进一步改进在于:所述锌化合物由氧化锌、碳酸锌、硬脂酸锌、甲酸锌中的一种或几种组成。
进一步改进在于:所述钠的弱酸盐选自醋酸钠、碳酸钠中的一种或几种。
进一步改进在于:所述芳香族亚磺酸盐由对甲苯亚磺酸锌、苯亚磺酸锌、对甲苯亚磺酸钠中的一种或者几种组成。
进一步改进在于:所述发泡成分包括偶氮二甲酰胺,所述偶氮二甲酰胺在发泡成分中占比的质量分数为100%~50%,优选为95%~70%。
进一步改进在于:所述发泡成分中偶氮二甲酰胺的粒径为0.15~1.45μm,优选为0.15~0.5μm。
进一步改进在于:所述发泡剂组成成分中活化助剂占发泡成分的质量分数为5%~25%,优选为10%~20%。
一种用于膨胀橡胶低温分解的发泡剂复合物的制备方法,包括以下步骤:
步骤一:原料混合
先通过搅拌设备将发泡成分和活化助剂搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
进一步改进在于:包括以下步骤:
步骤一:原料研磨
先将发泡成分和活化助剂分别加入研磨机单独研磨,得到粉料备用;
步骤二:原料混合
根据步骤一,通过搅拌设备将发泡成分和活化助剂的粉料搅拌混合均匀,制得发泡剂产品并密封存储。
本发明的有益效果为:本发明通过偶氮二甲酰胺和低温发泡剂复配,配合多种活化剂,通过共混和研磨工艺,制备出具有适合工业150℃应用,5min内分解完全,发气量高于180ml/g的发泡剂复合物,使膨胀胶在较低温度下可以达到较高的发泡倍率,兼顾流挂和发泡高度,同时膨胀胶内部的泡孔分散均匀,膨胀胶表面光滑细腻,性价比较高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例一的制备方法流程图;
图2是本发明实施例五的制备方法流程图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”、“第四”等仅用于描述目的,而不能理解为指示或暗示相对重要性。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
实施例一
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:5μm的AC发泡剂:90 phr、OBSH发泡剂:10 phr、对甲苯磺酸锌:1 phr、尿素:2 phr、氧化锌:5 phr、碳酸锌:5 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、OBSH发泡剂、对甲苯磺酸锌、尿素、氧化锌、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例二
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:5μm的AC发泡剂:90 phr、OBSH发泡剂:10 phr、对甲苯磺酸锌:1 phr、尿素:2 phr、碳酸锌:10 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、OBSH发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例三
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:2μm的AC发泡剂:90 phr、OBSH发泡剂:10 phr、对甲苯磺酸锌:1 phr、尿素:2 phr、碳酸锌:10 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、OBSH发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例四
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:2μm的AC发泡剂:90 phr、碳酸氢钠发泡剂:10 phr、对甲苯磺酸锌:1 phr、尿素:2 phr、碳酸锌:10 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、碳酸氢钠发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例五
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:2μm的AC发泡剂:90 phr、OBSH发泡剂:10 phr、对甲苯磺酸锌:1 phr、尿素:2 phr、碳酸锌:10 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图2,其制备方法如下:
步骤一:原料研磨
先将规定组份的AC发泡剂、OBSH发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸分别加入研磨机单独研磨,得到粉料备用;
步骤二:原料混合
根据步骤一,通过搅拌设备将AC发泡剂、OBSH发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸的粉料搅拌混合均匀,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例六
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:2μm的AC发泡剂:90 phr、OBSH发泡剂:10 phr、醋酸钠:1 phr、尿素:2 phr、碳酸锌:10phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、OBSH发泡剂、醋酸钠、尿素、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
实施例七
本实施例提供了一种用于膨胀橡胶低温分解的发泡剂复合物,包括以下组份原料:2μm的AC发泡剂:100phr、对甲苯磺酸锌:1 phr、尿素:2 phr、碳酸锌:10 phr、硬脂酸锌:1 phr、硬脂酸:2 phr。
参见图1,其制备方法如下:
步骤一:原料混合
先将规定组份的AC发泡剂、对甲苯磺酸锌、尿素、碳酸锌、硬脂酸锌、硬脂酸加入搅拌设备并搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
用本实施例的发泡剂作为制备EPDM发泡材料的发泡体系制备膨胀胶,并于150℃自由发泡,观察泡孔均匀度和表面粗糙程度。
上述实施例中各原料的具体组分如表1所示:
表1
材料 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 | 实施例7 |
AC(5μm) | 90 | 90 | |||||
AC(2μm) | 90 | 90 | 90 | 90 | 100 | ||
OBSH | 10 | 10 | 10 | 10 | 10 | ||
碳酸氢钠 | 10 | ||||||
醋酸钠 | 1 | ||||||
对甲苯磺酸锌 | 1 | 1 | 1 | 1 | 1 | 1 | |
尿素 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
氧化锌 | 5 | ||||||
碳酸锌 | 5 | 10 | 10 | 10 | 10 | 10 | 10 |
硬脂酸锌 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
硬脂酸 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
各实施例分别对应的测试结果见表2:
表2
性能 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 | 实施例7 |
开始分解的时间(150℃)/s | 100 | 104 | 70 | 74 | 98 | 95 | 105 |
发气量(150℃*5min)/(ml/g) | 160 | 171 | 184 | 150 | 158 | 188 | 189 |
总发气量(150℃*20min)/(ml/g) | 162 | 174 | 185 | 164 | 163 | 189 | 190 |
泡孔分散均匀度 | 均匀 | 均匀 | 均匀 | 均匀 | 不均匀 | 均匀 | 不均匀 |
膨胀胶表面粗糙度 | 光滑 | 光滑 | 光滑 | 光滑 | 粗糙 | 光滑 | 粗糙 |
由表1和表2结果说明,本发明通过偶氮二甲酰胺和低温发泡剂复配,配合多种活化剂,通过共混和研磨工艺,制备出具有适合工业150℃应用,5min内分解完全,发气量高于180ml/g的发泡剂复合物。另外,从表中得知,实施例2对比于实施例1,碳酸锌的加入提高了发泡剂的发气量。由实施例3可知,细粒径的AC发泡剂具有更高的发气量,更快的分解速率。由实施例4可知,碳酸氢钠复配造成发气量大幅度减弱。由实施例5可知,先混合后研磨的工艺有益于发泡剂的分解速率、发气量和膨胀胶表面光滑度。由实施例6可知,醋酸钠的加入有益于发气量的增大,但分解速率减小。由实施例7可知,单独使用AC不利用形成均匀的泡孔结构。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,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)
1.一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:包括发泡成分和活化助剂,所述发泡成分由AC发泡剂、OBSH发泡剂、H发泡剂、TSH发泡剂、碳酸氢钠发泡剂中的一种或几种组成,所述活化助剂由锌化合物、钠的弱酸盐、经过处理的尿素助剂、芳香族亚磺酸盐、硬脂酸中的一种或几种组成。
2.根据权利要求1所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述锌化合物由氧化锌、碳酸锌、硬脂酸锌、甲酸锌中的一种或几种组成。
3.根据权利要求1所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述钠的弱酸盐选自醋酸钠、碳酸钠中的一种或几种。
4.根据权利要求1所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述芳香族亚磺酸盐由对甲苯亚磺酸锌、苯亚磺酸锌、对甲苯亚磺酸钠中的一种或者几种组成。
5.根据权利要求1所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述发泡成分包括偶氮二甲酰胺,所述偶氮二甲酰胺在发泡成分中占比的质量分数为100%~50%,优选为95%~70%。
6.根据权利要求5所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述发泡成分中偶氮二甲酰胺的粒径为0.15~1.45μm,优选为0.15~0.5μm。
7.根据权利要求1所述的一种用于膨胀橡胶低温分解的发泡剂复合物,其特征在于:所述发泡剂组成成分中活化助剂占发泡成分的质量分数为5%~25%,优选为10%~20%。
8.一种用于膨胀橡胶低温分解的发泡剂复合物的制备方法,其特征在于:包括以下步骤:
步骤一:原料混合
先通过搅拌设备将发泡成分和活化助剂搅拌混合均匀,得到混合物备用;
步骤二:混合物研磨
根据步骤一,通过研磨机将混合均匀的混合物分次研磨,制得发泡剂产品并密封存储。
9.根据权利要求8所述的一种用于膨胀橡胶低温分解的发泡剂复合物的制备方法,其特征在于:包括以下步骤:
步骤一:原料研磨
先将发泡成分和活化助剂分别加入研磨机单独研磨,得到粉料备用;
步骤二:原料混合
根据步骤一,通过搅拌设备将发泡成分和活化助剂的粉料搅拌混合均匀,制得发泡剂产品并密封存储。
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