CN112175260B - 一种橡胶制品用氧化锌母胶粒及其制备方法 - Google Patents
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Abstract
本发明公开了一种橡胶制品用氧化锌母胶粒及其制备方法,橡胶制品用氧化锌母胶粒,氧化锌粉末20~50份,分散剂组合物1~3份,石蜡1~3份,碳酸钙10~20份,云母3~9份,石蜡油12~20份,复合母胶5~10份和塑胶粒10~20份,所述份数为质量份数;分散剂组合物为硬脂酸、油酸聚氧乙烯酯和异构十三醇聚氧乙烯醚的混合物。本发明橡胶制品用氧化锌母胶粒,可称量准确,无粉尘污染、改善了环境,环保、安全、清洁,且操作方便;使得氧化锌分散性得到明显改善,扩散速度快,分散性好,制品性能稳定,产品质量得到了保障;提高了活性,提高了硫化橡胶的交联程度,降低了氧化锌用量,降低了成本及金属含量而提高了环保性,制备方法易操作、易控制。
Description
技术领域
本发明涉及一种橡胶制品用氧化锌母胶粒及其制备方法,属于橡胶制品领域。
背景技术
橡胶行业是国民经济的重要基础产业之一,橡胶制品广泛应用于各个行业,已成为日常生活不可或缺的一部分。
氧化锌作为橡胶活性剂,一般标准用量为5PHR,由于呈粉末状,配料过程中,操作及称量会引起粉尘飞扬,造成称量不准,环境污染,吸入会影响员工身体健康;同时投入胶料中粉末状氧化锌的分散性难以得到保障,在橡胶行业中,氧化锌也是难分散的材料之一。
发明内容
本发明提供一种橡胶制品用氧化锌母胶粒及其制备方法,本发明橡胶制品用氧化锌母胶粒,可称量准确,无粉尘污染、改善了环境,且操作方便;使得氧化锌分散性得到明显改善,产品质量得到了保障;提高了活性,降低了氧化锌用量,降低了成本及金属含量、提高了环保性。
为解决上述技术问题,本发明所采用的技术方案如下:
一种橡胶制品用氧化锌母胶粒,氧化锌粉末20~50份,分散剂组合物1~3份,石蜡1~3份,碳酸钙10~20份,云母3~9份,石蜡油12~20份,复合母胶5~10份和塑胶粒10~20份,所述份数为质量份数;分散剂组合物为硬脂酸、油酸聚氧乙烯酯和异构十三醇聚氧乙烯醚的混合物。
上述橡胶制品用氧化锌母胶粒,将氧化锌粉末制备为胶粒,减免了无粉尘污染、改善了环境,提高了称量的准确性,提高了操作的方便性;通过分散剂与其他组分的协同促进,使得氧化锌分散性得到明显改善,产品质量得到了保障;通过各组分的共同促进,活性提高非常显著,橡胶的交联程度得到显著的提高,进而提高了橡胶的强度和耐候性,降低了氧化锌用量,降低了成本。
为了进一步提高物料的分散性,同时促进物料强度的提升,分散剂为硬脂酸、油酸聚氧乙烯酯和异构十三醇聚氧乙烯醚质量比为1:(0.5~0.8):(0.2~0.5)的混合物。
申请人经研究发现,本申请类型氧化锌粉末对胶料的性能影响较大,可以使用的包括纳米氧化锌、间接氧化锌、透明氧化锌等,但纳米氧化锌与本申请其它物料之间的协同从促进效果显著优于其它,究其原因,申请人认为,纳米氧化锌的比表面积增大,活化促进效应增强。
为了进一步促进分散性和活性的提高,进而更好地确保橡胶的性能,母胶为丁苯胶和EVA的复合母胶。EVA为乙烯-乙酸乙烯共聚物。
进一步优选,复合母胶为丁苯胶和EVA质量比为(3~5):1的混合物。
为了更好地促进活性的提升,同时减低成本,氧化锌粉末为20~40份,更有选为20~30份,申请人经研究发现,当氧化锌粉末为20~30份时,同等用量下,即可达到甚至超过直接以间接氧化锌为活性剂的效果,也即以本申请氧化锌母胶粒为活性剂,显著降低了氧化锌用量,降低了金属含量,降低了成本。
上述橡胶制品用氧化锌母胶粒的制备方法,将物料依次经过:密炼、捏合、挤出、碾磨、造粒和过筛后,即得橡胶制品用氧化锌母胶粒;其中,密炼温度为80-90℃,密炼段数为7段,每段的密炼时间为80±2秒。
为了进一步确保物料的活性,上述碾磨次数为2次,碾磨辊间的辊距为0.01mm;造粒时,每段温度55±10℃,模头温度60±15℃。
本申请橡胶制品用氧化锌母胶粒可直接用于橡胶活性剂。
本发明未提及的技术均参照现有技术。
本发明橡胶制品用氧化锌母胶粒,可称量准确,无粉尘污染、改善了环境,环保、安全、清洁,且操作方便;使得氧化锌分散性得到明显改善,扩散速度快,分散性好,制品性能稳定,产品质量得到了保障;提高了活性,提高了硫化橡胶的交联程度,降低了氧化锌用量,降低了成本及金属含量而提高了环保性,制备方法易操作、易控制。
具体实施方式
为了更好地理解本发明,下面结合实施例进一步阐明本发明的内容,但本发明的内容不仅仅局限于下面的实施例。
实施例1
一种橡胶制品用氧化锌母胶粒,其原料组分包括:纳米氧化锌(NC105,全球化学)30%,分散剂组合物2%,石蜡(58#,南阳石化)2%,纳米碳酸钙(贺州合兴)20%,云母(湿法云母粉,河北鑫发)6%,石蜡油(32#,中石化)15%,复合母胶10%和塑胶粒(7447,陶氏)15%;分散剂组合物为硬脂酸(硬脂酸SA1801,印尼斯文)、油酸聚氧乙烯酯和异构十三醇聚氧乙烯醚质量比为1:0.6:0.3的混合物;复合母胶为丁苯胶(SBR1502,申华)和EVA(220,VAC含量28%,美国杜邦)质量比为4:1的混合物。
对比例1
与实施例1所不同的是:分散剂组合物替换为硬脂酸(硬脂酸SA1801,印尼斯文)。
实施例2
与实施例1所不同的是:氧化锌为NC234(全球化学)。
实施例3
与实施例1所不同的是:氧化锌为间接氧化锌(上海浩罗实业有限公司)。
实施例4
与实施例1所不同的是:氧化锌为透明氧化锌。
实施例5
与实施例1所不同的是:氧化锌为50%wt纳米氧化锌和50%wt轻钙的混合物。
各例中,橡胶制品用氧化锌母胶粒的制备方法,将物料依次经过:密炼、捏合、挤出、碾磨、造粒和过筛后,即得橡胶制品用氧化锌母胶粒;其中,密炼温度为80-90℃,密炼段数为7段,每段的密炼时间为80±2秒;碾磨次数为3次,辊距为0.01mm;造粒时,每段温度55±10℃,模头温度60±15℃。
将上述各例制得的氧化锌母胶粒,用于胎面胶的制备,配方如表1所示,性能评价如表2所示,按常规两段混炼工艺加工。
表1为各例胶料配方
上表中,FST-160B,为东莞市福斯特橡塑科技有限公司,牌号为FST-160B(不含氧化锌)的混炼胶;
表2为胶料性能评价表
对比实施例1和对比例1的数据可看出,分散剂组合物与其他物料组合,可促进物料的分散,促进硫化胶强度的提升;对比实施例1-5可看出,不同的氧化锌粉末可对硫化胶性能形成不同的影响,纳米氧化锌与本申请其它物料作用后的活化效果,明显好于其它氧化锌;同等用量活性剂下,以实施例1所得产品为活性剂相比于直接使用氧化锌为活性剂,无粉尘污染、改善了环境,提高了分散性,降低了氧化锌用量,降低了成本及金属含量而提高了环保性,提高了硫化橡胶的交联程度,强度和耐候性提升了10.2%以上。
Claims (4)
1.一种橡胶制品用氧化锌母胶粒,其特征在于:其原料组分包括:氧化锌粉末20~30份,分散剂组合物1~3份,石蜡1~3份,碳酸钙10~20份,云母3~9份,石蜡油12~20份,复合母胶5~10份和塑胶粒10~20份,所述份数为质量份数;分散剂组合物为硬脂酸、油酸聚氧乙烯酯和异构十三醇聚氧乙烯醚质量比为1:(0.5~0.8):(0.2~0.5)的混合物;复合母胶为丁苯胶和EVA质量比为(3~5): 1的混合物;氧化锌粉末为纳米氧化锌。
2.权利要求1所述的橡胶制品用氧化锌母胶粒的制备方法,其特征在于:将物料依次经过:密炼、捏合、挤出、碾磨、造粒和过筛后,即得橡胶制品用氧化锌母胶粒;其中,密炼温度为80-90℃,密炼段数为7段,每段的密炼时间为80±2秒。
3.如权利要求2所述的制备方法,其特征在于:碾磨次数为2次,碾磨辊间的辊距为0.01mm;造粒时,每段温度55±10℃,模头温度60±15℃。
4.权利要求1所述的橡胶制品用氧化锌母胶粒的应用,其特征在于:用于橡胶活性剂。
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