CN108102234A - 一种耐磨的氯磺化聚乙烯橡胶及其制备方法 - Google Patents
一种耐磨的氯磺化聚乙烯橡胶及其制备方法 Download PDFInfo
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Abstract
本发明属于橡胶材料技术领域,涉及一种耐磨的氯磺化聚乙烯橡胶及其制备方法。一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶100‑120份、炭黑120‑140份、氧化锌5‑7份、硬脂酸1‑2份、防老剂2‑4份、软化剂20‑30份、硫黄0.5‑1.0份、促进剂1‑3份、填充剂1‑5份;本发明的制备方法采用二段混炼的制备方法保证了胶料的物理性能,且操作简单。该发明的阿克隆磨耗量为0.125 cm3,提高了近1.8倍的耐磨性。
Description
技术领域
本发明属于橡胶材料技术领域,涉及一种耐磨的氯磺化聚乙烯橡胶及其制备方法。
背景技术
氯磺化聚乙烯(CSM)是由低密度聚乙烯或高密度聚乙烯经过氯化和氯磺化反应制得的一种特种橡胶。分子量一般在20000-30000之间,为白色或黄色弹性体,能溶解于芳香烃及氯代烃不溶于脂肪及醇中,在酮和醚中只能溶胀不能溶解,有优异的耐臭氧性、耐大气老化性、耐化学腐蚀性等,较好的物理机械性能、耐老化性能、耐热及耐低温性、耐油性、耐燃性、耐磨性、及耐电绝缘性,用途广泛。
随着科技的发展,人们对于各方面的需求加大,对橡胶制品的耐磨性的要求也有所提高,本发明提供一种氯磺化聚乙烯橡胶采用新思路在不改变原有优良的胶料物理性能下,大大提高橡胶的耐磨性能。
发明内容
针对现有技术存在的问题,本发明的目的在于提供一种耐磨的氯磺化聚乙烯橡胶及其制备方法。本发明耐磨的氯磺化聚乙烯橡胶具有较高的耐磨性能;本发明制备方法采用二段混炼保证了橡胶物理性能,并且操作简单。
为解决上述技术问题,本发明采用的技术方案:
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶100-120份、炭黑120-140份、氧化锌5-7份、硬脂酸1-2份、防老剂2-4份、软化剂20-30份、硫黄0.5-1.0份、促进剂1-3份、填充剂1-5份。
本发明的一种优选方案,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶110份、炭黑130份、氧化锌6份、硬脂酸1份、防老剂2份、软化剂25份、硫黄0.75份、促进剂2份、填充剂3份。
所述填充剂为用相对氮化硅用量1%wt的改性的氮化硅粉粒。
所述防老剂为 BLE。
所述软化剂 为QS-2。
所述促进剂为TRA。
一种耐磨的氯磺化聚乙烯橡胶的制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为60-80r/min,时间为20-30min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为50-60℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,硫化温度为170-190℃,硫化时间为5-10min。
所述步骤(2)中开炼机的辊筒速比为1:1-1.5;前辊温度为50-60℃,后辊温度为40-50℃。
本发明的有益效果:由表1可知,本发明的实施例1-3的阿克隆磨耗量为0.125 cm3左右,比对比例1和对比例2的阿克隆磨耗量为0.220 cm3左右相比,提高了近1.8倍,这是因为纳米氮化硅的摩擦因数小于0.1,较大的表面硬度使得其具有极好的耐磨性;表面改性剂使纳米氮化硅表面有机化,很大程度上提高了与橡胶基体的相容性,使其达到了更加均匀的分散程度 , 提高了橡胶的耐磨性能。
具体实施方式
为了进一步理解本发明,下面结合实施例对本发明优选实施方案进行描述,但是应当理解,这些描述只是为进一步说明本发明的特征和优点,而不是对本发明权利要求的限制。
实施例1
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶105份、炭黑130份、氧化锌5份、硬脂酸1份、防老剂BLE 2份、软化剂QS-2 25份、硫黄0.80份、促进剂TRA 2份、填充剂为用相对氮化硅用量1%wt的改性的氮化硅粉粒2份。
制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为70r/min,时间为25min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为55℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,辊筒速比为1:1-1.25;前辊温度为55℃,后辊温度为45℃硫化温度为180℃,硫化时间为5min。
实施例2
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶110份、炭黑130份、氧化锌6份、硬脂酸1份、防老剂BLE 2份、软化剂QS-2 25份、硫黄0.75份、促进剂TRA 2份、填充剂为用相对氮化硅用量1%wt的改性的氮化硅粉粒3份。
制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为70r/min,时间为25min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为55℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,辊筒速比为1:1-1.25;前辊温度为55℃,后辊温度为45℃硫化温度为180℃,硫化时间为5min。
实施例3
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶120份、炭黑125份、氧化锌7份、硬脂酸2份、防老剂BLE 4份、软化剂QS-2 30份、硫黄0.7份、促进剂TRA 3份、填充剂为用相对氮化硅用量1%wt的改性的氮化硅粉粒4份。
制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为70r/min,时间为25min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为55℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,辊筒速比为1:1-1.25;前辊温度为55℃,后辊温度为45℃硫化温度为180℃,硫化时间为5min。
对比例1
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶105份、炭黑130份、氧化锌5份、硬脂酸1份、防老剂BLE 2份、软化剂QS-2 25份、硫黄0.80份、促进剂TRA 2份。
制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为70r/min,时间为25min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为55℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,辊筒速比为1:1-1.25;前辊温度为55℃,后辊温度为45℃硫化温度为180℃,硫化时间为5min。
对比例2
一种耐磨的氯磺化聚乙烯橡胶,由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶110份、炭黑130份、氧化锌6份、硬脂酸1份、防老剂BLE 2份、软化剂QS-2 25份、硫黄0.75份、促进剂TRA 2份。
制备方法,步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为70r/min,时间为25min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为55℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,辊筒速比为1:1-1.25;前辊温度为55℃,后辊温度为45℃硫化温度为180℃,硫化时间为5min。
一、性能检测
硬度(邵尔A)按照GB/T 531-1999进行测试;拉伸强度和拉断伸长率按照GB/T 528-1998进行测试;撕裂强度按照GB/T 529-1999进行测定拉伸速率为50mm min-1。
1、对实施例1-3制备的耐磨的氯磺化聚乙烯橡胶进行性能检测,并与对比例1和对比例2作对比,对比结果如表1。
表1实施例1-3制备的耐磨的氯磺化聚乙烯橡胶理性指标与对比例对比表。
编号/ 项目 | 实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 |
用相对氮化硅用量1%wt的改性的氮化硅粉粒 | 2份 | 3份 | 4份 | 0份 | 0份 |
硬度(邵尔A)/度 | 64 | 64 | 64 | 65 | 65 |
拉伸强度/MPa | 16.4 | 16.8 | 17.0 | 17.3 | 17.3 |
拉断伸长率/% | 275 | 275 | 275 | 291 | 291 |
撕裂强度/(kN·m-1) | 50 | 50 | 53 | 53 | 53 |
阿克隆磨耗量/cm3 | 0.122 | 0.125 | 0.127 | 0.221 | 0.219 |
由表1可知,本发明耐磨的氯磺化聚乙烯橡胶实施例1-3的拉伸强度在16-17MPa,与对比例1和对比例2的拉伸强度17.3MPa基本相差不多,发明实施例1-3的拉断伸长率为275%,与对比例1和对比例2的拉断伸长率291%,本发明的硬度(邵尔A)为64度,与对比例1和对比例2的硬度(邵尔A)为65度基本相同,本发明的撕裂强度为50kN·m-1,与对比例1和对比例2的撕裂强度为53kN·m-1基本相同,本发明的实施例1-3的阿克隆磨耗量为0.125 cm3左右,比对比例1和对比例2的阿克隆磨耗量为0.220 cm3左右相比,提高了近1.8倍,说明本发明加入用相对氮化硅用量1%wt的改性的氮化硅粉粒后在保证其他胶料物理性能并未发生较大变化的基础上,提高了其耐磨性1.8倍。
可以理解的是,以上关于本发明的具体描述,仅用于说明本发明而并非受限于本发明实施例所描述的技术方案,本领域的普通技术人员应当理解,仍然可以对本发明进行修改或等同替换,以达到相同的技术效果;只要满足使用需要,都在本发明的保护范围之内。
Claims (8)
1.一种耐磨的氯磺化聚乙烯橡胶,其特征在于:由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶100-120份、炭黑120-140份、氧化锌5-7份、硬脂酸1-2份、防老剂2-4份、软化剂20-30份、硫黄0.5-1.0份、促进剂1-3份、填充剂1-5份。
2.根据权利要求1所述的耐磨的氯磺化聚乙烯橡胶,其特征在于:由以下重量份数的原料制备而成:氯磺化聚乙烯橡胶110份、炭黑130份、氧化锌6份、硬脂酸1份、防老剂2份、软化剂25份、硫黄0.75份、促进剂2份、填充剂3份。
3.根据权利要求1所述的耐磨的氯磺化聚乙烯橡胶,其特征在于:所述填充剂为用相对氮化硅用量1%wt的改性的氮化硅粉粒。
4. 根据权利要求1所述的耐磨的氯磺化聚乙烯橡胶,其特征在于:所述防老剂为 BLE。
5. 根据权利要求1所述的耐磨的氯磺化聚乙烯橡胶,其特征在于:所述软化剂 为QS-2。
6.根据权利要求1所述的耐磨的氯磺化聚乙烯橡胶,其特征在于:所述促进剂为TRA。
7.一种根据权利要求1-6所述的任一耐磨的氯磺化聚乙烯橡胶的制备方法,其特征在于:步骤如下:
(1)第一段混炼:按重量份数秤取原料,将原料全部装进密炼机中进行混炼,转子转速为60-80r/min,时间为20-30min;
(2)第二段混炼:将上述步骤(1)中混炼后的混料装进开炼机中进行混炼,排胶温度为50-60℃,制得混炼胶;
(3)硫化:将上述步骤(2)中制得的混炼胶在平板硫化机上硫化,硫化温度为170-190℃,硫化时间为5-10min。
8.根据权利要求7所述的耐磨的氯磺化聚乙烯橡胶的制备方法,其特征在于:所述步骤(2)中开炼机的辊筒速比为1:1-1.5;前辊温度为50-60℃,后辊温度为40-50℃。
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CN109880271A (zh) * | 2019-01-25 | 2019-06-14 | 王德秀 | 一种新型抗氧化改性氯磺化聚乙烯橡胶 |
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CN109880271A (zh) * | 2019-01-25 | 2019-06-14 | 王德秀 | 一种新型抗氧化改性氯磺化聚乙烯橡胶 |
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