CN104292677B - 一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料 - Google Patents
一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料 Download PDFInfo
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Abstract
一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料。该橡胶胶料由下列组成按质量份数经塑炼、优化配合、混炼加工而成:滑石粉用量0~80份;氯磺化聚乙烯用量20~80份;丁苯橡胶用量20~80份及其它适量橡胶助剂。氯磺化聚乙烯和丁苯橡胶分别塑炼后,将两者和滑石粉、炭黑及各种橡胶助剂配合后,一起混炼加工制得。所制得的改性氯磺化聚乙烯/丁苯并用胶胶料具有强耐酸耐碱性能和优异的物理机械性能及较高的热稳定性等优点。适用于塔/池/槽/罐等容器类、管道和配件等防腐及大型橡胶制品的生产或现场硫化的施工。
Description
技术领域
本发明涉及一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料生产方法。其由氯磺化聚乙烯和丁苯橡胶分别塑炼后,按质量份数将两者和滑石粉、炭黑及各种橡胶助剂优配合后,一起混炼加工制得。
该强防腐胶料特别适用于塔/池/槽/罐等化工容器类和工业管道和配件等防腐之用及大型橡胶防腐制品的生产或现场硫化的施工。
背景技术
橡胶具有许多金属材料所不能及的耐腐蚀性,以及在多种介质(包括高温下的酸和浓酸碱环境)中高度的化学稳定性和低渗透性。此外,还有噪音小、设备结构简单和价格低廉的特点。橡胶衬里防腐技术可以大大提高设备的可靠性和使用寿命,随着工业的发展,其应用范围也越来越广。其中应用最普遍的是橡胶衬里,其广泛用于化工塔类、池/槽/罐、容器以及工业管道和配件等。橡胶衬里可在常压下用90℃以上的热水进行低温硫化或在室温空气中进行自然硫化。因此,特别适用于保护大型及结构复杂的设备。目前常用的橡胶衬里主要有天然胶、氯丁胶、丁基胶、丁苯胶、异戊二烯橡胶和氯磺化聚乙烯橡胶衬里。
2009年,沈青等人公开了“制备新型耐温防腐衬里材料的方法”(CN 101585251B),采用天然橡胶制备了防腐衬里,其称能长期适用于温度范围114-120℃。
同年,张庆虎公开了“高耐油橡胶防腐衬里及制备的方法”(CN 101704966 B),采用高耐油的丁基橡胶制备了防腐衬里,其在室温中经酸碱浸渍7天后,酸环境的质量变化不大于±3%。
但目前应用的橡胶衬里防腐均存在配合体系不合理,质量不稳定、机械性能和耐温度不高及制造成本较高。
发明内容
本发明的目的在于提供一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料生产方法。其由氯磺化聚乙烯和丁苯橡胶分别塑炼后,将两者和滑石粉、炭黑及各种橡胶助剂优化配合后,一起混炼加工制得。
本发明的强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料具有极强的防腐能力-耐酸耐碱,同时具有较好的力学性能和耐热性及施工方便、成本低廉等优点。该胶料在室温下,30%的盐酸溶液、60%的硫酸溶液和40%的氢氧化钠浸渍7天后,其拉伸强度保持率在95%以上;浸渍7天后,其拉伸强度保持率在95%以上;质量变化率小于2%;10%的失重温度在380℃以上。
本发明的目的是通过以下技术方案实现的:
首先,将氯磺化聚乙烯和丁苯橡胶分别塑炼;然后,按质量份数将两种塑炼胶和硬脂酸、氧化铅、氧化镁、促进剂DM、防老剂NBS均匀混炼,再依次滑石粉、炭黑、凡士林、硫磺和促进剂M,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定其力学性能、防腐能力-耐酸耐碱及耐热性。
本发明的优点与效果是:
采用滑石粉作为补强及防腐增强剂,优化配伍并用了氯磺化聚乙烯和丁苯橡胶,制备了一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料。
1)采用滑石粉作为补强及防腐增强剂,优化配伍并用了氯磺化聚乙烯和丁苯橡胶,制备了一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料。
2)产品力学性能好、耐酸耐碱能力强、耐150℃高温。
3)生产成本低廉,易于工业化及质量稳定等优点。
具体实施方式
本发明首先氯磺化聚乙烯和丁苯橡胶分别塑炼;然后,按质量份数将两种塑炼胶和硬脂酸、氧化铅、氧化镁、促进剂DM、防老剂NBS均匀混炼,再依次滑石粉、炭黑、凡士林、硫磺和促进剂M,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定其力学性能、防腐能力-耐酸耐碱及耐热性。
测定硫化试样片力学性能-拉伸强度和断裂伸长率按照GB/T528-2009测试,在RGL-30A型(深圳瑞格有限责任公司)拉伸试验机对样品进行拉伸试验,拉伸速率为500mm/min;硫化橡胶的耐酸、耐碱实验按GB/T 1690-2010《硫化橡胶或热塑性橡胶 耐液体试验方法》进行测试(即样品在室温下,浸渍在30%的盐酸溶液、60%的硫酸溶液和40%的氢氧化钠溶液7天后,测定其力学性能损失)。其中:质量变化率 =(浸泡后质量-浸泡前质量)/浸泡前质量;拉伸强度保持率 = 浸泡后拉伸强度/浸泡前拉伸强度;断裂伸长率保持率 = 浸泡后断裂伸长率/浸泡前断裂伸长率;用热重分析(TGA)STA449C(德国耐驰一起制造有限公司)测定10%的失重温度说明样品的热稳定性。
实施例 1
将塑炼好的氯磺化聚乙烯80份和丁苯橡胶20份和硬脂酸3份、氧化铅10份、氧化镁20份、促进剂DM0.5份、防老剂NBS3份均匀混炼,再依次滑石粉80份、炭黑10份、凡士林3份、硫磺1份和促进剂M1份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
比较例 1
将塑炼好的氯磺化聚乙烯80份和丁苯橡胶20份和硬脂酸3份、氧化铅10份、氧化镁20份、促进剂DM0.5份、防老剂NBS3份均匀混炼,再依次炭黑90份、凡士林3份、硫磺1份和促进剂M1份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
实施例 2
将塑炼好的氯磺化聚乙烯20份和丁苯橡胶80份和硬脂酸1份、氧化铅5份、氧化镁10份、促进剂DM0.5份、防老剂NBS1份均匀混炼,再依次滑石粉80份、炭黑5份、凡士林1份、硫磺0.5份和促进剂M0.5份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
实施例 3
将塑炼好的氯磺化聚乙烯80份和丁苯橡胶20份和硬脂酸10份、氧化铅30份、氧化镁20份、促进剂DM3份、防老剂NBS6份均匀混炼,再依次滑石粉60份、炭黑20份、凡士林10份、硫磺3份和促进剂M1份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
实施例 4
将塑炼好的氯磺化聚乙烯60份和丁苯橡胶40份和硬脂酸3份、氧化铅10份、氧化镁20份、促进剂DM0.5份、防老剂NBS3份均匀混炼,再依次滑石粉60份、炭黑30份、凡士林3份、硫磺1份和促进剂M3份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
实施例 5
将塑炼好的氯磺化聚乙烯40份和丁苯橡胶60份和硬脂酸3份、氧化铅10份、氧化镁20份、促进剂DM0.5份、防老剂NBS3份均匀混炼,再依次滑石粉80份、炭黑10份、凡士林3份、硫磺1份和促进剂M1份,接着进行捣胶和薄通,最后下片便制混炼胶。停放24h后硫化,以150℃/20min/10MPa硫化制成硫化试样片,测定性能。
表1为实施例和比较例中的硫化胶片的性能,从中可看出:本发明的产品力学性能好、质量稳定、防腐性能好、耐高温。
同时,本发明中采用了片状结构的滑石粉作为防腐及耐温改性剂,又及采用了氯磺化聚乙烯和丁苯橡胶并用,大大降低了成本,减少炭黑粉末环境污染。形成新的经济增长点,对橡胶材料及制品相关的理论和生产的发展有借鉴作用,提升了橡胶行业进步,促使了强防腐胶产品及其它强防腐橡胶产品的更新换代,具有重要的社会效益和经济效益。
表1 本发明强防腐硫化胶的技术数据
Claims (1)
1.一种强防腐滑石粉改性氯磺化聚乙烯/丁苯并用胶胶料,其组成特征(按质量份数)是:滑石粉用量60~80份;氯磺化聚乙烯用量20~80份;丁苯橡胶用量20~80份;炭黑用量5~90份;硫磺用量0.5~3份;促进剂DM用量0.5~3份;促进剂M用量0.5~3份;氧化铅用量5~30份;氧化镁用量10~20份;硬脂酸用量1~10份;凡士林用量1~10份;防老剂NBC用量1~6份,氯磺化聚乙烯和丁苯橡胶分别塑炼后,将两者和滑石粉、炭黑及各种橡胶助剂优化配合后,一起混炼加工制得。
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