CN110760054A - 一种抗冲击保温隔音板的制备方法 - Google Patents
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Abstract
本发明属于板材制备技术领域,具体涉及一种抗冲击保温隔音板的制备方法。本发明首先收集废弃电路板粉碎后筛分得到废弃电路板粉末,接着将蒙脱石粉碎后熔融拉丝,得到自制矿物纤维,随后本发明制备聚氨酯A组份和改性B组份,并将两者混合预聚并注入模具中,在干燥箱中发泡后,再于室温下熟化,最终制得抗冲击保温隔音板,本发明制备的抗冲击保温隔音板,抗压强度、扯断强度和抗拉伸强度都较高,导热系数低,保温性能良好,隔音系数较高,有广阔的应用前景。
Description
技术领域
本发明属于板材制备技术领域,具体涉及一种抗冲击保温隔音板的制备方法。
背景技术
随着世界森林资源日趋减少和木材原料的匮乏,人们将目光转向资源丰富的麦秸、玉米秸秆、棉秆、高粱秆等非木材生物质资源,以缓解木材资源紧缺的燃眉之急,特别是在我国这样森林资源匮乏的国家,如何减少生物质资源的焚烧损失,实现对生物质资源的综合利用,是当前的紧迫任务。
人们以生物质为主要原料,开发了一系列满足人类生活和生产的复合材产品,其中最主要的包括各种生物质秸秆人造板、生物质秸秆-热固性高分子复合材料以及生物质秸秆-热塑料性塑料复合材料。
实木板材作为建筑装饰材料一直是最为理想的选择,实木板材具有环保健康的效果,既能够起到保暖作用又具有亲近自然的效果,有利于人们的身心健康。但是,实木板材作为建筑材料以及家具用材又存在的一定的不足之处,这些不足之处大大限制了其应用。实木板材由于是树木自然生长而成的,存在着结疤、年轮和迎风、向阳等问题导致的内生生长应力,而生长应力的积累最易在后期造成变形、开裂等缺陷。
现有技术中为了克服内生应力、木材尺寸大小以及生长缺陷存在的不足,以及各种树木生长成材后的不规则形状问题,往往采取化整为零的方法来将大型的板材冲成小的板条,将小的板条上的缺陷去除,然后再将小的板条拼接起来形成大尺寸的板材,再利用其它面材将覆盖包裹形成整张的成品板材。更有甚者,还有人将大的板材粉碎成为实木粉末,再用胶水将木粉混合压制成为板材,刨花板就是这样制成的。为了克服或者避免树木原有缺陷比如结疤、色差等造成的制成板材质量降低,通过径切、弦切的形式来做,借以提高成材的质量。
市场上有一些隔音板是在两块板之间安装橡胶层、减振材料或隔音毡等做成的,采用这种方法,在短期里可以在一定程度上提高隔音效果,但是其隔音效果会随着时间而逐渐降低。众所周知,橡胶等材料在空气中会慢慢老化,导致其逐渐变硬而丧失弹性,从而导致隔音效果随着时间而逐渐降低。另一方面,这种在两块板中间安装橡胶层或隔音毡层的做法,工程造价也非常高。
废弃电路板属于环境四大公害之一的固体电子废弃物,通常来自变电站、家用电器等。由于技术革新和市刺激,电器设备和电子产品的淘汰速度非常迅速,随之产生大量电子废弃物。据统计,废弃电路板约占电子 废弃物的3%,通常含有30%的塑料、30%的惰性氧化物以及40%的金属。其中,非金属材料的质量约占整体质量的60%,往往被填埋或焚烧,致资源浪费和二次污染,而金、银、铜等金属经分离后被回收利用。
目前隔音板存在:抗冲击性较低、保温效果一般、隔音效果一般等问题。
因此,发明一种优良的隔音板对板材制备技术领域具有积极意义。
发明内容
本发明主要解决的技术问题,针对目前常见的聚合物基隔音板材的抗冲击性较低,保温隔音性能较差的缺陷,提供了一种抗冲击保温隔音板的制备方法。
为了解决上述技术问题,本发明所采用的技术方案是:
一种抗冲击保温隔音板的制备方法,其特征在于具体制备步骤为:
(1)将A组份和B组份混合后装入烧杯中,搅拌混合,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;
(2)待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,保温发泡处理后取出,在室温下熟化12~15h,熟化结束后拆模,即得抗冲击保温隔音板;
所述A组份的制备步骤为:
称取质量分数为33%的三亚乙基二胺的二丙二醇溶液、双二甲氨基乙基醚、二甲基乙醇胺、硅油、一氟二氯乙烷和聚醚多元醇YD-105混合后放入搅拌器中,以3000~4000r/min的转速搅拌混合15~20min得到A组份;
所述B组份的制备步骤为:
称取液化二苯基甲烷二异氰酸酯、废弃电路板粉末、自制矿物纤维、熟石膏、氢氧化钙和去离子水混合后得到B组份;
所述废弃电路板粉末的制备步骤为:
收集废弃电路板放入粉碎机中,粉碎3~5h,将粉碎后的电路板装入电动振筛机中,层层筛分30~40min,收集过筛粉末即为废弃电路板粉末;
所述自制矿物纤维的制备步骤为:
将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎3~5h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,高温熔融后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维。
所述抗冲击保温隔音板的具体制备步骤(1)中,A组份和B组份的质量比为1:1.
所述抗冲击保温隔音板的具体制备步骤(1)中,搅拌混合的转速为2000~3000r/min,搅拌混合的时间为10~15s。
所述抗冲击保温隔音板的具体制备步骤(2)中,保温发泡处理的温度为65~70℃,保温发泡处理的时间为45~60min。
所述A组份的制备步骤中,按重量份数计,质量分数为33%的三亚乙基二胺的二丙二醇溶液为0.3~0.5份、双二甲氨基乙基醚为0.3~0.5份、二甲基乙醇胺为0.5~0.8份、硅油为0.6~0.8份、一氟二氯乙烷为10~12份、聚醚多元醇YD-105为40~50份。
所述B组份的制备步骤中,按重量份数计,液化二苯基甲烷二异氰酸酯为40~45份、废弃电路板粉末为25~30份、自制矿物纤维为10~15份、熟石膏为3~5份、氢氧化钙为3~5份、去离子水为10~15份。
所述废弃电路板粉末的制备步骤中,层层筛分时依次采用30目、220目、320目和400目的筛层。
所述自制矿物纤维的制备步骤中,氧化锆球磨珠和蒙脱石的球料质量比为20:1。
所述自制矿物纤维的制备步骤中,高温熔融的温度为1600~1700℃,高温熔融的时间为1~2h。
本发明的有益技术效果是:
(1)本发明首先收集废弃电路板粉碎后筛分得到废弃电路板粉末,接着将蒙脱石粉碎后熔融拉丝,得到自制矿物纤维,随后本发明制备聚氨酯A组份和改性B组份,并将两者混合预聚并注入模具中,在干燥箱中发泡后,再于室温下熟化,最终制得抗冲击保温隔音板,本发明的隔音板是以发泡聚氨酯作为基体材料,并且改性B组份中含有废弃电路板粉末,由于废弃电路板粉末中同时含有阻尼塑料和阻尼金属粉末,它和自制矿物纤维填充在聚氨酯基体中,起到钉扎界面的作用,改善材料的动态力学性质,当声波入射到材料内部时,由于存在多种材料阻尼失配性,加大对声能的消耗,自制矿物纤维和废弃电路板中金属颗粒的存在,打乱声波传播有序途径,增大声波的互相反射频率,最终达到减弱入射声能的效果,提高了隔音板材料的隔声减噪性能;
(2)本发明制得的隔音板是以发泡聚氨酯为基体,由于发泡聚氨酯材料具有许多连续和相互贯通的的气泡结构,因而具有一定的通气性,当声波入射到发泡聚氨酯材料表面时,声波产生的振动引起小孔或孔隙内的空气运动,造成和孔壁的摩擦由于空气分子与材料筋络的摩擦和粘滞力的作用,使相当一部分声能以热能的形式衰减,此外小孔中的空气和孔壁与多孔材料之间的热交换引起的热损失,也使声能衰减,另外发泡聚氨酯隔音材料中的孔隙中含有大量空气,具有极低的热导率,可以有效降低热量的传导,因而有效提高了本发明隔音板的保温隔音性能;
(3)本发明隔音板的原料中,还包含熟石膏、氢氧化钙和自制矿物纤维,其中矿物纤维均匀的分散在聚氨酯基体中,起到了应力分散的作用,可以在隔音板受到外界冲击时,分散应力,提高隔音板的抗冲击性能,其次,本发明自制矿物纤维主要成分是氧化硅和氧化铝,而熟石膏主要成分为硫酸盐,由于自制矿物纤维本身为酸性物质,在氢氧化钙的强碱作用下受到侵蚀作用,能够打破其中的Si-O和Al-O化学键,而熟石膏与水反应后生成硫酸钙,氢氧化钙中有氢氧根离子和钙离子,氢氧根离子也能促进Si-O和Al-O化学键断开,并在硫酸盐的影响下,钙离子和断开的Si-O和Al-O化学键相互作用生成水硬性的胶凝材料,进而提高隔音板的抗冲击强度,具有广阔的应用前景。
具体实施方式
收集废弃电路板放入粉碎机中,粉碎3~5h,将粉碎后的电路板装入电动振筛机中,依次采用30目、220目、320目和400目的筛层,层层筛分30~40min,收集过筛粉末即为废弃电路板粉末,备用;按球料质量比为20:1将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎3~5h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,加热升温至1600~1700℃,高温熔融1~2h后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维,备用;按重量份数计,称取0.3~0.5份质量分数为33%的三亚乙基二胺的二丙二醇溶液、0.3~0.5份双二甲氨基乙基醚、0.5~0.8份二甲基乙醇胺、0.6~0.8份硅油、10~12份一氟二氯乙烷和40~50份聚醚多元醇YD-105混合后放入搅拌器中,以3000~4000r/min的转速搅拌混合15~20min得到A组份;按重量份数计,称取40~45份液化二苯基甲烷二异氰酸酯、25~30份备用的废弃电路板粉末、10~15份备用的自制矿物纤维、3~5份熟石膏、3~5份氢氧化钙和10~15份去离子水混合后得到B组份;将A组份和B组份按等质量比混合后装入烧杯中,并以2000~3000r/min的转速搅拌混合10~15s,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,加热升温至65~70℃,保温发泡处理45~60min后取出,在室温下熟化12~15h,熟化结束后拆模,即得抗冲击保温隔音板。
实施例1
废弃电路板粉末的制备:
收集废弃电路板放入粉碎机中,粉碎3h,将粉碎后的电路板装入电动振筛机中,依次采用30目、220目、320目和400目的筛层,层层筛分30min,收集过筛粉末即为废弃电路板粉末,备用;
自制矿物纤维的制备:
按球料质量比为20:1将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎3h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,加热升温至1600℃,高温熔融1h后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维,备用;
A组份的制备:
按重量份数计,称取0.3份质量分数为33%的三亚乙基二胺的二丙二醇溶液、0.3份双二甲氨基乙基醚、0.5份二甲基乙醇胺、0.6份硅油、10份一氟二氯乙烷和40份聚醚多元醇YD-105混合后放入搅拌器中,以3000r/min的转速搅拌混合15min得到A组份;
B组份的制备:
按重量份数计,称取40份液化二苯基甲烷二异氰酸酯、25份备用的废弃电路板粉末、10份备用的自制矿物纤维、3份熟石膏、3份氢氧化钙和10份去离子水混合后得到B组份;
发泡预聚体的制备:
将A组份和B组份按等质量比混合后装入烧杯中,并以2000r/min的转速搅拌混合10s,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;
抗冲击保温隔音板的制备:
待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,加热升温至65℃,保温发泡处理45min后取出,在室温下熟化12h,熟化结束后拆模,即得抗冲击保温隔音板。
实施例2
废弃电路板粉末的制备:
收集废弃电路板放入粉碎机中,粉碎4h,将粉碎后的电路板装入电动振筛机中,依次采用30目、220目、320目和400目的筛层,层层筛分35min,收集过筛粉末即为废弃电路板粉末,备用;
自制矿物纤维的制备:
按球料质量比为20:1将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎4h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,加热升温至1650℃,高温熔融1.5h后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维,备用;
A组份的制备:
按重量份数计,称取0.4份质量分数为33%的三亚乙基二胺的二丙二醇溶液、0.4份双二甲氨基乙基醚、0.65份二甲基乙醇胺、0.7份硅油、11份一氟二氯乙烷和45份聚醚多元醇YD-105混合后放入搅拌器中,以3500r/min的转速搅拌混合17.5min得到A组份;
B组份的制备:
按重量份数计,称取42.5份液化二苯基甲烷二异氰酸酯、27.5份备用的废弃电路板粉末、12.5份备用的自制矿物纤维、4份熟石膏、4份氢氧化钙和12.5份去离子水混合后得到B组份;
发泡预聚体的制备:
将A组份和B组份按等质量比混合后装入烧杯中,并以2500r/min的转速搅拌混合12.5s,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;
抗冲击保温隔音板的制备:
待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,加热升温至67.5℃,保温发泡处理53min后取出,在室温下熟化13.5h,熟化结束后拆模,即得抗冲击保温隔音板。
实施例3
废弃电路板粉末的制备:
收集废弃电路板放入粉碎机中,粉碎5h,将粉碎后的电路板装入电动振筛机中,依次采用30目、220目、320目和400目的筛层,层层筛分40min,收集过筛粉末即为废弃电路板粉末,备用;
自制矿物纤维的制备:
按球料质量比为20:1将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎5h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,加热升温至1700℃,高温熔融2h后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维,备用;
A组份的制备:
按重量份数计,称取0.5份质量分数为33%的三亚乙基二胺的二丙二醇溶液、0.5份双二甲氨基乙基醚、0.8份二甲基乙醇胺、0.8份硅油、12份一氟二氯乙烷和50份聚醚多元醇YD-105混合后放入搅拌器中,以4000r/min的转速搅拌混合20min得到A组份;
B组份的制备:
按重量份数计,称取45份液化二苯基甲烷二异氰酸酯、30份备用的废弃电路板粉末、15份备用的自制矿物纤维、5份熟石膏、5份氢氧化钙和15份去离子水混合后得到B组份;
发泡预聚体的制备:
将A组份和B组份按等质量比混合后装入烧杯中,并以3000r/min的转速搅拌混合15s,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;
抗冲击保温隔音板的制备:
待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,加热升温至70℃,保温发泡处理60min后取出,在室温下熟化15h,熟化结束后拆模,即得抗冲击保温隔音板。
对比例1与实例1的制备方法基本相同,唯有不同的是缺少废弃电路板粉末。
对比例2与实例1的制备方法基本相同,唯有不同的是缺少自制矿物纤维。
对比例3郑州某公司生产的隔音板。
分别对本发明和对比例中的隔音板进行性能检测,检测结果如表1所示:
检测方法:
抗压强度参照GB10009的标准进行检测。
扯断强度参照GB18580-2001的标准进行检测。
抗拉伸强度参照GB1040的标准进行检测。
导热系数参照GB10295的标准进行检测。
隔音系数参照GB/T19889的标准进行检测。
表1隔音板性能测定结果
测试项目 | 实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | 对比例3 |
抗压强度(MPa) | 9.2 | 9.5 | 9.8 | 7.2 | 7.8 | 8.6 |
扯断强度(MPa) | 25 | 27 | 29 | 15 | 17 | 20 |
抗拉伸强度(MPa) | 62 | 65 | 68 | 50 | 53 | 56 |
导热系数(W/m·K) | 0.024 | 0.023 | 0.022 | 0.075 | 0.062 | 0.054 |
隔音系数(20~2000Hz) | 0.81 | 0.84 | 0.87 | 0.62 | 0.69 | 0.72 |
通过表1能够看出,本发明制备的抗冲击保温隔音板,抗压强度、扯断强度和抗拉伸强度都较高,导热系数低,保温性能良好,隔音系数较高,有广阔的应用前景。
以上所述仅为本发明的较佳方式,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)
1.一种抗冲击保温隔音板的制备方法,其特征在于具体制备步骤为:
(1)将A组份和B组份混合后装入烧杯中,搅拌混合,制得发泡预聚体,当发泡预聚体出现微弱乳白迹象时,立即将其注入高度为2cm,边长为20cm的正四边形不锈钢发泡模具中;
(2)待上述发泡预聚体注入完毕后,盖上不锈钢盖板,并将不锈钢发泡模具移入鼓风干燥箱中,保温发泡处理后取出,在室温下熟化12~15h,熟化结束后拆模,即得抗冲击保温隔音板;
所述A组份的制备步骤为:
称取质量分数为33%的三亚乙基二胺的二丙二醇溶液、双二甲氨基乙基醚、二甲基乙醇胺、硅油、一氟二氯乙烷和聚醚多元醇YD-105混合后放入搅拌器中,以3000~4000r/min的转速搅拌混合15~20min得到A组份;
所述B组份的制备步骤为:
称取液化二苯基甲烷二异氰酸酯、废弃电路板粉末、自制矿物纤维、熟石膏、氢氧化钙和去离子水混合后得到B组份;
所述废弃电路板粉末的制备步骤为:
收集废弃电路板放入粉碎机中,粉碎3~5h,将粉碎后的电路板装入电动振筛机中,层层筛分30~40min,收集过筛粉末即为废弃电路板粉末;
所述自制矿物纤维的制备步骤为:
将氧化锆球磨珠和蒙脱石混合后装入球磨罐中,研磨粉碎3~5h后过100目筛,收集过筛粉末,将过筛粉末放入高温电阻炉中,高温熔融后,将熔融液倒入拉丝漏板中拉丝成型,得到自制矿物纤维。
2.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述抗冲击保温隔音板的具体制备步骤(1)中,A组份和B组份的质量比为1:1。
3.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述抗冲击保温隔音板的具体制备步骤(1)中,搅拌混合的转速为2000~3000r/min,搅拌混合的时间为10~15s。
4.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述抗冲击保温隔音板的具体制备步骤(2)中,保温发泡处理的温度为65~70℃,保温发泡处理的时间为45~60min。
5.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述A组份的制备步骤中,按重量份数计,质量分数为33%的三亚乙基二胺的二丙二醇溶液为0.3~0.5份、双二甲氨基乙基醚为0.3~0.5份、二甲基乙醇胺为0.5~0.8份、硅油为0.6~0.8份、一氟二氯乙烷为10~12份、聚醚多元醇YD-105为40~50份。
6.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述B组份的制备步骤中,按重量份数计,液化二苯基甲烷二异氰酸酯为40~45份、废弃电路板粉末为25~30份、自制矿物纤维为10~15份、熟石膏为3~5份、氢氧化钙为3~5份、去离子水为10~15份。
7.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述废弃电路板粉末的制备步骤中,层层筛分时依次采用30目、220目、320目和400目的筛层。
8.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述自制矿物纤维的制备步骤中,氧化锆球磨珠和蒙脱石的球料质量比为20:1。
9.根据权利要求1所述的一种抗冲击保温隔音板的制备方法,其特征在于:所述自制矿物纤维的制备步骤中,高温熔融的温度为1600~1700℃,高温熔融的时间为1~2h。
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