CN108129689A - 导热防震聚氨酯泡棉的制备工艺 - Google Patents

导热防震聚氨酯泡棉的制备工艺 Download PDF

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CN108129689A
CN108129689A CN201711381930.6A CN201711381930A CN108129689A CN 108129689 A CN108129689 A CN 108129689A CN 201711381930 A CN201711381930 A CN 201711381930A CN 108129689 A CN108129689 A CN 108129689A
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乐斌
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Abstract

本发明公开了一种导热防震聚氨酯泡棉的制备工艺，包括如下步骤：S1、将聚酯多元醇、淀粉、空心微珠及适量水加入至反应釜中，搅拌混合均匀；S2、向反应釜中加入异氰酸酯；S3、加入改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；S4、将中间物料与抗菌剂及润滑剂混合后，在80‑100℃的密封条件下进行混炼，薄通得到料片；S5、向料片中加入发泡剂或通入发泡气体，得到预聚体；S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，得到聚氨酯泡棉。本发明的聚氨酯泡棉的制备工艺中，通过选择合适的反应条件、利用组分之间的协同作用，尤其是空心微珠和改性炭黑的加入，赋予产品更好的导热性能和防震性能。

Description

导热防震聚氨酯泡棉的制备工艺
技术领域
本发明涉及一种泡棉的制备工艺，具体涉及一种导热防震聚氨酯泡棉的制备工艺，属于泡棉制备技术领域。
背景技术
聚氨酯泡棉通常是由异氰酸酯与多元醇聚合而得，制备出的发泡棉材质组织通常会形成多个大小不一的泡孔，因其具有较小的压缩残留变形、较高的能量吸收和极佳的缓冲性能，常被用作缓冲材料、吸音材料等，广泛应用于电子、电气、数码及通讯等技术领域。但是现有的发泡棉还存在一些缺陷，如导热性能差、防震效果不够好等问题，有待于改善。
发明内容
为解决现有技术的不足，本发明的目的在于提供一种导热防震的聚氨酯泡棉的制备工艺。
为了实现上述目标，本发明采用如下的技术方案：
导热防震聚氨酯泡棉的制备工艺，包括如下步骤：
S1、将30-60份聚酯多元醇、5-15份淀粉、3-10份空心微珠及适量水加入至反应釜中，搅拌混合均匀；
S2、向反应釜中加入20-40份异氰酸酯，加热至100-120℃下反应3-5h，反应釜内通入保护气体；
S3、继续将反应釜升温至160-180℃，加入5-15份改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；
S4、将中间物料与2-4份抗菌剂及3-5份润滑剂混合后，在80-100℃的密封条件下进行混炼，然后在60℃下薄通3-5遍，得到料片；
S5、向料片中加入5-10份发泡剂或通入发泡气体，得到预聚体；
S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，得到聚氨酯泡棉；
以上各原料的份数均为重量份。
优选地，前述聚酯多元醇为聚己二酸乙二醇丁二醇酯或聚碳酸酯二醇。
更优选地，前述空心微珠为硅酸铝空心微珠，能够优化泡棉的防震性能。
再优选地，前述异氰酸酯为脂肪族异氰酸酯。
更优选地，前述保护气体为氮气或氦气。
优选地，前述发泡剂为无甲酰胺发泡剂。
另一种优选地，通入发泡气体时，容器中的压强为0.5-4MPa，保持时间为30min以上。
进一步优选地，前述基材置于固化炉中成型时，固化成型温度为100-150℃，固化时间为10-30s。
更进一步优选地，前述改性炭黑的制备方法是：将炭黑、甲醛溶液及氢氧化钠溶液加入到反应容器中，水浴加热升温至50℃反应1-2h，反复水洗过滤，滤饼在50℃真空干燥24h，得到改性炭黑。
本发明的有益之处在于：本发明的聚氨酯泡棉的制备工艺中，通过选择合适的反应条件、利用组分之间的协同作用，尤其是空心微珠和改性炭黑的加入，赋予产品更好的导热性能和防震性能。
具体实施方式
以下结合具体实施例对本发明作具体的介绍。
下面各实施例中的份数均为重量份，如无特殊说明，所用原料均为市购。
实施例1
本实施例的导热防震聚氨酯泡棉的制备工艺，包括如下步骤：
S1、将30份聚酯多元醇、5份淀粉、10份空心微珠及适量水加入至反应釜中，搅拌混合均匀；
S2、向反应釜中加入20份异氰酸酯，加热至100℃下反应3h，反应釜内通入保护气体；
S3、继续将反应釜升温至160℃，加入15份改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；
S4、将中间物料与2份抗菌剂及5份润滑剂混合后，在100℃的密封条件下进行混炼，然后在60℃下薄通3遍，得到料片；
S5、向料片中加入5份发泡剂，得到预聚体；
S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，固化成型温度为150℃，固化时间为10s，得到聚氨酯泡棉。
其中，聚酯多元醇为聚己二酸乙二醇丁二醇酯或聚碳酸酯二醇；空心微珠为硅酸铝空心微珠；异氰酸酯为脂肪族异氰酸酯，保护气体为氮气或氦气；发泡剂为无甲酰胺发泡剂。
需要特别说明的是，改性炭黑的制备方法是：将炭黑、甲醛溶液及氢氧化钠溶液加入到反应容器中，水浴加热升温至50℃反应1-2h，反复水洗过滤，滤饼在50℃真空干燥24h，得到改性炭黑。
实施例2
本实施例的导热防震聚氨酯泡棉的制备工艺与实施例1大致相似，区别主要在于各原料的重量份不同，以及步骤S5中采用发泡气体，具体包括如下步骤：
S1、将60份聚酯多元醇、8份淀粉、5份空心微珠及适量水加入至反应釜中，搅拌混合均匀；
S2、向反应釜中加入40份异氰酸酯，加热至120℃下反应5h，反应釜内通入保护气体；
S3、继续将反应釜升温至180℃，加入10份改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；
S4、将中间物料与3份抗菌剂及4份润滑剂混合后，在80-100℃的密封条件下进行混炼，然后在60℃下薄通4遍，得到料片；
S5、向料片中加入通入发泡气体，得到预聚体；
S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，固化成型温度为150℃，固化时间为30s，得到聚氨酯泡棉。
步骤S5中，通入发泡气体时，容器中的压强为0.5-4MPa，保持时间为30min以上。
实施例3
本实施例的导热防震聚氨酯泡棉的制备工艺，包括如下步骤：
S1、将50份聚酯多元醇、15份淀粉、10份空心微珠及适量水加入至反应釜中，搅拌混合均匀；
S2、向反应釜中加入40份异氰酸酯，加热至110℃下反应4h，反应釜内通入保护气体；
S3、继续将反应釜升温至170℃，加入10份改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；
S4、将中间物料与4份抗菌剂及5份润滑剂混合后，在100℃的密封条件下进行混炼，然后在60℃下薄通5遍，得到料片；
S5、向料片中加入10份发泡剂，得到预聚体；
S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，固化成型温度为100-150℃，固化时间为10-30s，得到聚氨酯泡棉。
对比例1
本对比例的步骤与实施例1相同，区别在于未加入空心微珠，具体实施步骤不再赘述。
对比例2
本对比例的步骤与实施例1相同，区别在于未加入改性炭黑，具体实施步骤不再赘述。
对比例3
对比例3为市售的聚氨酯泡棉。
经检测，实施例1-3得到的聚氨酯泡棉相较于对比例3的市售产品而言，其导热性能和防震性能均得到显著提升；而相较于对比例1而言，空心微珠的加入能够优化泡棉的防震性能，而且还能提高产品的吸音降噪能力；相较于对比例2而言，改性炭黑的加入除了对泡棉的防震性能有改善之外，更重要的是能够优化泡棉的导热性。
综上，本发明的聚氨酯泡棉的制备工艺中，通过选择合适的反应条件、利用组分之间的协同作用，尤其是空心微珠和改性炭黑的加入，赋予产品更好的导热性能和防震性能。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解，上述实施例不以任何形式限制本发明，凡采用等同替换或等效变换的方式所获得的技术方案，均落在本发明的保护范围内。

Claims (9)

1.导热防震聚氨酯泡棉的制备工艺，其特征在于，包括如下步骤：
S1、将30-60份聚酯多元醇、5-15份淀粉、3-10份空心微珠及适量水加入至反应釜中，搅拌混合均匀；
S2、向反应釜中加入20-40份异氰酸酯，加热至100-120℃下反应3-5h，反应釜内通入保护气体；
S3、继续将反应釜升温至160-180℃，加入5-15份改性炭黑，混合均匀，得到物料团，冷却至室温后得到中间物料；
S4、将中间物料与2-4份抗菌剂及3-5份润滑剂混合后，在80-100℃的密封条件下进行混炼，然后在60℃下薄通3-5遍，得到料片；
S5、向料片中加入5-10份发泡剂或通入发泡气体，得到预聚体；
S6、将预聚体涂布在基材上，送入固化炉中进行固化成型，得到聚氨酯泡棉；
以上各原料的份数均为重量份。
2.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述聚酯多元醇为聚己二酸乙二醇丁二醇酯或聚碳酸酯二醇。
3.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述空心微珠为硅酸铝空心微珠。
4.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述异氰酸酯为脂肪族异氰酸酯。
5.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述保护气体为氮气或氦气。
6.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述发泡剂为无甲酰胺发泡剂。
7.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，通入发泡气体时，容器中的压强为0.5-4MPa，保持时间为30min以上。
8.根据权利要求1所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述基材置于固化炉中成型时，固化成型温度为100-150℃，固化时间为10-30s。
9.根据权利要求1-8任一项所述的导热防震聚氨酯泡棉的制备工艺，其特征在于，所述改性炭黑的制备方法是：将炭黑、甲醛溶液及氢氧化钠溶液加入到反应容器中，水浴加热升温至50℃反应1-2h，反复水洗过滤，滤饼在50℃真空干燥24h，得到改性炭黑。
CN201711381930.6A 2017-12-20 2017-12-20 导热防震聚氨酯泡棉的制备工艺 Pending CN108129689A (zh)

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