CN107458067A - 一种组合型引擎隔音棉及其生产方法 - Google Patents
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Abstract
本发明公开一种组合型引擎隔音棉,包括聚丙烯发泡层、基材隔音层与耐候隔音层,其中,所述聚丙烯发泡层位于所述基材隔音层和所述耐候隔音层之间,并通过热压组合制成相连接的一体;所述聚丙烯发泡层厚度为0.8‑1.2mm,所述基材隔音层厚度为0.4‑0.8mm,所述耐候隔音层厚度为0.6‑1.0mm。本发明还提供了一种组合型引擎隔音棉的生产方法。本发明具备良好的隔音性能以及优秀的机械性能,还具有结构简单、隔热性能高、机械强度好、节能环保、原料成本低、耐温耐潮、抗压抗变形、隔音性能好等优点。
Description
技术领域
本发明属于汽车应用领域,涉及一种引擎隔音棉,具体是一种组合型引擎隔音棉及其生产方法。
背景技术
EPP是发泡聚丙烯的缩写,是一种新型泡沫塑料的简称;EPP比重轻、弹性好、抗震抗压、变形恢复率高、吸收性能好、耐油、耐酸、耐碱、耐各种化学溶剂、不吸水、绝缘、耐热(-40~130℃),无毒无味,可100%循环使用且性能几乎毫不降低,是真正的环境友好型泡沫塑料,用EPP珠粒在成型机的模具中可模塑成各种不同形状的EPP制品。EPP广泛应用在汽车上,如保险杠芯材、防撞块、顶棚等内衬件,车门填充、头枕、遮阳板等,可节省油耗又提高了乘客的安全系数。
随着现代工业与信息的发展,噪音污染越来越突出,明显地影响了人们的身心健康、生活质量和生活中各种设备的寿命。它与水污染、空气污染、固体废物污染并列成为当今社会四大环境公害。噪音的危害包括:对听力的损伤,对人的生理效应、对人们生活和工作的影响和物理效应。噪音对人们的生活影响较大,控制噪音传播一般包括三个环节:在声源处控制、在传播途径中控制和在接收器处控制。其中效果显著,负面影响少,最为实用的是在传播途径中控制,即离不开声功能材料(主要为吸音/隔音材料)的使用。
现实中存在的吸声功能材料并不理想,不是降噪效果差就是显得过于笨重,满足不了现代人们的需求。目前吸音隔音材料主要从单一材料到复合材料,单层到多层夹心式的方向发展,在改善声学性能同时尽量地减少重量和厚度。
最常见的就是,高级轿车内为求乘坐舒适及良好的音响效果,因此必须利用到具有良好吸音及隔音效果的材料,以隔绝及吸收外来的中高频吵杂声音,以及车辆行驶时本身所产生的中低频噪音与共振。若吸音及隔音效果不佳,即难以表现出高级轿车的价值感,因此吸音及隔音材料用于汽车内装时可显示出吸音及隔音功效的优劣,极为重要。
发明内容
本发明的目的在于提供一种组合型引擎隔音棉及其生产方法。
本发明的目的可以通过以下技术方案实现:
一种组合型引擎隔音棉,包括聚丙烯发泡层、基材隔音层与耐候隔音层,其中,所述聚丙烯发泡层位于所述基材隔音层和所述耐候隔音层之间,并通过热压组合制成相连接的一体;所述聚丙烯发泡层厚度为0.8-1.2mm,所述基材隔音层厚度为0.4-0.8mm,所述耐候隔音层厚度为0.6-1.0mm。
一种组合型引擎隔音棉的生产方法,其特征在于,该生产方法包括如下具体步骤:
1)生产耐候隔音层,其由下述原料制备而成,聚乙烯树脂55-65份、膨润土0.5-1份、钛白粉25-35份、硫酸钡5-15份、滑石粉5-10份、触变剂0.2-0.3份、云母粉2-5份、高岭土5-10份、分散剂0.5-0.7份;
2)生产基材隔音层,其由下述原料制备而成,其中:改性PVA 48-52份、稳定剂3-3.5份、硫化剂4-4.5份、玻璃纤维38-42份、柔软剂1-2份、二氧化硅28-32份;
3)将聚丙烯发泡层、基材隔音层与耐候隔音层逐层贴合。
步骤(1)生产工艺步骤为:将聚乙烯树脂、膨润土、钛白粉、硫酸钡、滑石粉、触变剂、云母粉、高岭土、分散剂加入到高速混合机中进行高速混合15-20分钟,然后在180-200℃温度条件下塑化熔融,得到聚乙烯树脂熔体;将聚乙烯树脂熔体转入双螺杆挤出机中,在180-220℃温度下挤出并造粒,得到耐候隔音层板材。
步骤(2)生产工艺步骤为:将上述原料除硫化剂外置于密炼机中进行密炼,时间为20-30分钟,温度为75-90℃;将密炼好的胶料加入开炼机上出片,冷却12小时;将冷却好的胶料放入开炼机上进行热炼,热炼10-15分钟后加入硫化剂;温度控制在50-60℃,时间为15-20分钟;将热炼好的胶料置于三辊压延机上出片,温度低于40℃,得到基材隔音层板材。
步骤(3)所述贴合步骤为:聚丙烯发泡层、基材隔音层与耐候隔音层逐层贴合后送入热压机,热压温度150℃、热压压力3Mpa、热压时间为10min,压得厚度为1.8-3mm;将其温度降到30-40度冷却成型。
本发明的有益效果:本发明具备良好的隔音性能以及优秀的机械性能,还具有结构简单、隔热性能高、机械强度好、节能环保、原料成本低、耐温耐潮、抗压抗变形、隔音性能好等优点。
附图说明
为了便于本领域技术人员理解,下面结合附图对本发明作进一步的说明。
图1为本发明一种组合型引擎隔音棉截面示意图。
具体实施方式
下面将结合实施例对本发明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它实施例,都属于本发明保护的范围。
实施例1
一种组合型引擎隔音棉,如图1所示,包括聚丙烯发泡层2、基材隔音层3与耐候隔音层1,其中,聚丙烯发泡层2位于基材隔音层3和耐候隔音层1之间,并通过热压组合制成相连接的一体;聚丙烯发泡层2厚度为1.2mm,基材隔音层3厚度为0.4mm,耐候隔音层1厚度为1.0mm;
一种组合型引擎隔音棉的生产方法,该生产方法包括如下具体步骤:
1)生产耐候隔音层1,由下述原料制备而成,其中:聚乙烯树脂55份、膨润土1份、钛白粉25份、硫酸钡15份、滑石粉5份、触变剂0.3份、云母粉2份、高岭土10份、分散剂0.5份;
制备工艺步骤为:将聚乙烯树脂、膨润土、钛白粉、硫酸钡、滑石粉、触变剂、云母粉、高岭土、分散剂加入到高速混合机中进行高速混合20分钟,然后在180℃温度条件下塑化熔融,得到聚乙烯树脂熔体;将聚乙烯树脂熔体转入双螺杆挤出机中,在220℃温度下挤出并造粒,得到耐候隔音层板材;
2)生产基材隔音层3,由下述原料制备而成,其中:改性PVA 48份、稳定剂3.5份、硫化剂4份、玻璃纤维42份、柔软剂1份、二氧化硅32份;
具体制备工艺步骤为:将上述原料除硫化剂外置于密炼机中进行密炼,时间为20分钟,温度为90℃;将密炼好的胶料加入开炼机上出片,冷却12小时;将冷却好的胶料放入开炼机上进行热炼,热炼10分钟后加入硫化剂;温度控制在60℃,时间为15分钟;将热炼好的胶料置于三辊压延机上出片,温度低于40℃,得到基材隔音层板材;
3)将聚丙烯发泡层2、基材隔音层3与耐候隔音层1逐层贴合后送入热压机,热压温度150℃、热压压力3Mpa、热压时间为10min,压得厚度为3mm;将其温度降到30度冷却成型,由内而外将基材隔音层3、聚丙烯发泡层2与耐候隔音层1层叠组合,制备组合型引擎隔音棉,降噪系数为0.80,平均隔声量为34dB。本发明具有结构简单、隔热性能高、机械强度好、节能环保、原料成本低、耐温耐潮、抗压抗变形、隔音性能好等优点。
实施例2
一种组合型引擎隔音棉,如图1所示,包括聚丙烯发泡层2、基材隔音层3与耐候隔音层1,其中,聚丙烯发泡层2位于基材隔音层3和耐候隔音层1之间,并通过热压组合制成相连接的一体;聚丙烯发泡层2厚度为0.8mm,基材隔音层3厚度为0.8mm,耐候隔音层1厚度为0.6mm;
一种组合型引擎隔音棉的生产方法,该生产方法包括如下具体步骤:
1)生产耐候隔音层1,由下述原料制备而成,其中:聚乙烯树脂65份、膨润土0.5份、钛白粉35份、硫酸钡5份、滑石粉10份、触变剂0.2份、云母粉5份、高岭土5份、分散剂0.7份;
制备工艺步骤为:将聚乙烯树脂、膨润土、钛白粉、硫酸钡、滑石粉、触变剂、云母粉、高岭土、分散剂加入到高速混合机中进行高速混合15分钟,然后在200℃温度条件下塑化熔融,得到聚乙烯树脂熔体;将聚乙烯树脂熔体转入双螺杆挤出机中,在180℃温度下挤出并造粒,得到耐候隔音层板材;
2)生产基材隔音层3,由下述原料制备而成,其中:改性PVA 52份、稳定剂3份、硫化剂4.5份、玻璃纤维38份、柔软剂2份、二氧化硅28份;
具体制备工艺步骤为:将上述原料除硫化剂外置于密炼机中进行密炼,时间为30分钟,温度为75℃;将密炼好的胶料加入开炼机上出片,冷却12小时;将冷却好的胶料放入开炼机上进行热炼,热炼15分钟后加入硫化剂;温度控制在50℃,时间为20分钟;将热炼好的胶料置于三辊压延机上出片,温度低于40℃,得到基材隔音层板材;
3)将聚丙烯发泡层2、基材隔音层3与耐候隔音层1逐层贴合后送入热压机,热压温度150℃、热压压力3Mpa、热压时间为10min,压得厚度为1.8mm;将其温度降到40度冷却成型,由内而外将基材隔音层3、聚丙烯发泡层2与耐候隔音层1层叠组合,制备组合型引擎隔音棉,降噪系数为0.80,平均隔声量为34dB。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (5)
1.一种组合型引擎隔音棉,其特征在于,包括聚丙烯发泡层、基材隔音层与耐候隔音层,其中,所述聚丙烯发泡层位于所述基材隔音层和所述耐候隔音层之间,并通过热压组合制成相连接的一体;所述聚丙烯发泡层厚度为0.8-1.2mm,所述基材隔音层厚度为0.4-0.8mm,所述耐候隔音层厚度为0.6-1.0mm。
2.一种组合型引擎隔音棉的生产方法,其特征在于,该生产方法包括如下具体步骤:
1)生产耐候隔音层,其由下述原料制备而成,聚乙烯树脂55-65份、膨润土0.5-1份、钛白粉25-35份、硫酸钡5-15份、滑石粉5-10份、触变剂0.2-0.3份、云母粉2-5份、高岭土5-10份、分散剂0.5-0.7份;
2)生产基材隔音层,其由下述原料制备而成,其中:改性PVA 48-52份、稳定剂3-3.5份、硫化剂4-4.5份、玻璃纤维38-42份、柔软剂1-2份、二氧化硅28-32份;
3)将聚丙烯发泡层、基材隔音层与耐候隔音层逐层贴合。
3.根据权利要求2所述的一种组合型引擎隔音棉的生产方法,其特征在于,步骤(1)生产工艺步骤为:将聚乙烯树脂、膨润土、钛白粉、硫酸钡、滑石粉、触变剂、云母粉、高岭土、分散剂加入到高速混合机中进行高速混合15-20分钟,然后在180-200℃温度条件下塑化熔融,得到聚乙烯树脂熔体;将聚乙烯树脂熔体转入双螺杆挤出机中,在180-220℃温度下挤出并造粒,得到耐候隔音层板材。
4.根据权利要求2所述的一种组合型引擎隔音棉的生产方法,其特征在于,步骤(2)生产工艺步骤为:将上述原料除硫化剂外置于密炼机中进行密炼,时间为20-30分钟,温度为75-90℃;将密炼好的胶料加入开炼机上出片,冷却12小时;将冷却好的胶料放入开炼机上进行热炼,热炼10-15分钟后加入硫化剂;温度控制在50-60℃,时间为15-20分钟;将热炼好的胶料置于三辊压延机上出片,温度低于40℃,得到基材隔音层板材。
5.根据权利要求2所述的一种组合型引擎隔音棉的生产方法,其特征在于,步骤(3)所述贴合步骤为:聚丙烯发泡层、基材隔音层与耐候隔音层逐层贴合后送入热压机,热压温度150℃、热压压力3Mpa、热压时间为10min,压得厚度为1.8-3mm;将其温度降到30-40℃冷却成型。
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