CN104592480A - 聚氨酯改性聚硫橡胶的制备方法 - Google Patents

聚氨酯改性聚硫橡胶的制备方法 Download PDF

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CN104592480A
CN104592480A CN201310525598.1A CN201310525598A CN104592480A CN 104592480 A CN104592480 A CN 104592480A CN 201310525598 A CN201310525598 A CN 201310525598A CN 104592480 A CN104592480 A CN 104592480A
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polysulfide rubber
polyurethane modified
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梁松杰
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Qingdao Wangyu Rubber Co Ltd
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Abstract

本发明公开了一种聚氨酯改性聚硫橡胶的制备方法，包括以下步骤：一、将经过真空脱水处理的大分子二醇置于烧瓶中，加入过量的二异氰酸酯，并通入氮气保护，在60℃下反应5h，得端异氰酸酯基预聚体；二、将上述预聚体降至室温，加入溶剂和聚硫橡胶，搅拌，然后加入催化剂，反应1.5h后升温至70℃，反应6h，减压蒸馏将产物中的溶剂抽去，即得聚氨酯改性聚硫橡胶。本发明以聚氧化丙烯醚二醇、聚四氢呋喃醚二醇和二苯基甲烷二异氰酸酯为原料合成的预聚体作为嵌段，引入到液态聚硫橡胶的大分子主链中制得聚氨酯改性聚硫橡胶，提高了物理机械性能。

Description

聚氨酯改性聚硫橡胶的制备方法
 
技术领域
本发明涉及一种橡胶的制备方法，具体涉及一种聚氨酯改性聚硫橡胶的制备方法。
 
背景技术
聚硫橡胶作为密封胶的主要品种之一，是以二氯二乙基缩甲醛、三氯丙烷、多硫化钠为主要原料合成制造，其最终制品具有优良的耐油性、耐溶剂性、气密性等特点，被广泛的应用于建筑行业和涂料、胶粘剂的工业生产，以及一些特殊的应用领域，如火箭固体燃料的粘接剂等场合。
 
发明内容
本发明的目的在于，提供一种聚氨酯改性聚硫橡胶的制备方法，制得的聚氨酯改性聚硫橡胶，提高了物理机械性能。
所述聚氨酯改性聚硫橡胶的制备方法，它包括以下步骤：
一、将经过真空脱水处理的大分子二醇置于烧瓶中，加入过量的二异氰酸酯，并通入氮气保护，在60℃下反应5h，得端异氰酸酯基预聚体；
二、将上述预聚体降至室温，加入溶剂和聚硫橡胶，搅拌，然后加入催化剂，反应1.5h后升温至70℃，反应6h，减压蒸馏将产物中的溶剂抽去，即得聚氨酯改性聚硫橡胶。
本发明提供的聚氨酯改性聚硫橡胶的制备方法，其有益效果在于，以聚氧化丙烯醚二醇、聚四氢呋喃醚二醇和二苯基甲烷二异氰酸酯为原料合成的预聚体作为嵌段，引入到液态聚硫橡胶的大分子主链中制得聚氨酯改性聚硫橡胶，提高了物理机械性能。
 
具体实施方式
下面结合一个实施例，对本发明提供的聚氨酯改性聚硫橡胶的制备方法进行详细的说明。
 
实施例
一、将经过真空脱水处理的大分子二醇置于烧瓶中，加入过量的二异氰酸酯，并通入氮气保护，在60℃下反应5h，得端异氰酸酯基预聚体；
二、将上述预聚体降至室温，加入溶剂和聚硫橡胶，搅拌，然后加入催化剂，反应1.5h后升温至70℃，反应6h，减压蒸馏将产物中的溶剂抽去，即得聚氨酯改性聚硫橡胶。

Claims (1)

1.一种聚氨酯改性聚硫橡胶的制备方法，其特征在于：它包括以下步骤：
一、将经过真空脱水处理的大分子二醇置于烧瓶中，加入过量的二异氰酸酯，并通入氮气保护，在60℃下反应5h，得端异氰酸酯基预聚体；
二、将上述预聚体降至室温，加入溶剂和聚硫橡胶，搅拌，然后加入催化剂，反应1.5h后升温至70℃，反应6h，减压蒸馏将产物中的溶剂抽去，即得聚氨酯改性聚硫橡胶。
CN201310525598.1A 2013-10-31 2013-10-31 聚氨酯改性聚硫橡胶的制备方法 Pending CN104592480A (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105505284A (zh) * 2016-01-19 2016-04-20 河北禹泽橡塑科技有限公司 一种聚硫密封胶固化剂及其制备工艺
CN105622887A (zh) * 2016-03-17 2016-06-01 安徽大学 一种阴离子型水性聚硫氨酯的制备方法
CN105622892A (zh) * 2016-03-17 2016-06-01 安徽大学 一种非离子型水性聚硫氨酯的制备方法
CN105778027A (zh) * 2016-03-17 2016-07-20 安徽大学 一种阳离子型水性聚硫氨酯的制备方法
CN106928691A (zh) * 2017-03-31 2017-07-07 苏州铂邦胶业有限公司 一种环氧树脂增韧剂及其制备方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105505284A (zh) * 2016-01-19 2016-04-20 河北禹泽橡塑科技有限公司 一种聚硫密封胶固化剂及其制备工艺
CN105622887A (zh) * 2016-03-17 2016-06-01 安徽大学 一种阴离子型水性聚硫氨酯的制备方法
CN105622892A (zh) * 2016-03-17 2016-06-01 安徽大学 一种非离子型水性聚硫氨酯的制备方法
CN105778027A (zh) * 2016-03-17 2016-07-20 安徽大学 一种阳离子型水性聚硫氨酯的制备方法
CN105778027B (zh) * 2016-03-17 2018-06-26 安徽大学 一种阳离子型水性聚硫氨酯的制备方法
CN105622892B (zh) * 2016-03-17 2018-08-07 安徽大学 一种非离子型水性聚硫氨酯的制备方法
CN106928691A (zh) * 2017-03-31 2017-07-07 苏州铂邦胶业有限公司 一种环氧树脂增韧剂及其制备方法

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