CN106317392A - 用消光涤纶废丝制备高耐候不饱和聚酯树脂及制备方法 - Google Patents
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Abstract
本发明公开了一种由消光涤纶废丝醇解制备高耐候性不饱和聚酯树脂，其组分包括涤纶废丝、苯乙烯、苯酐、顺酐、丙二醇、苯甲酸等。本发明通过醇解涤纶废丝制作高耐候性不饱和聚酯树脂，涤纶丝中含有纳米级的二氧化钛，均匀分散在树脂中不分层，能够大大提高制品的白度和耐候性，涤纶废丝价格低廉，价格远低于PET废旧瓶片，材料来源广泛，可以减少不饱和聚酯树脂制备过程中苯酐和二元醇的使用量，从而大大降低树脂成本，制备的不饱和聚酯树脂能够在彩色胶衣，户外人造石等耐候性要求较高的领域使用。
Description
技术领域
本发明涉及一种不饱和聚酯树脂的制备方法，具体涉及一种由涤纶废丝醇解制备高耐候不饱和聚酯树脂，属于资源再利用制备高性能材料技术领域。
技术背景
涤纶是合成纤维中的一个重要品种，是我国聚酯纤维的商品名称。它是以精对苯二甲酸（PTA）或对苯二甲酸二甲酯（DMT）和乙二醇（EG）为原料经酯化或酯交换和缩聚反应而制得的成纤高聚物——聚对苯二甲酸乙二醇酯（PET），经纺丝和后处理制成的纤维。
随着中国经济持续快速增长和国内居民消费能力的不断提高，国内涤纶纤维的需求量也不断增长。中国涤纶纤维产能以惊人的速度增长着，使得中国逐渐发展成为世界涤纶类产品的重要加工基地，并成为世界涤纶纤维产量最大的国家。涤纶纤维是所有纺织纤维中加工总量最多的化纤品种，开发差别化品种，提高产品附加值，提高企业经济效益，对整个化纤工业的影响至关重要；产品差别化是涤纶的发展方向，而中国的涤纶纤维生产企业也正是沿着这个方向发展。
根据聚酯切片中消光剂二氧化钛含量的不同 ,涤纶丝一般分为大有光、 半消光和全消光的。大有光切片中的二氧化钛质量分数为 0% ,半消光切片中的二氧化钛质量分数为 0.30% ± 0.05% ,全消光切片中的二氧化钛质量分数高达 2 . 5% ±0.1%。半消光切片与全消光切片的主要差别在于二氧化钛含量不同 ,后者为前者的 8倍多。全消光聚酯切片属于国内涤纶市场的高附加值产品 ,全消光切片不仅降低了纤维的反光和闪烁现象,而且使后续纤维具有光泽柔和 ,深染性好 ,织物悬垂性高 ,遮蔽性能强等优点。
涤纶废丝的主要来源有三种： 1.涤纶丝生产第一道工序的时候，不符合要求的丝是废丝。 2.在涤纶生产过程中必不可少地会出现聚酯工段的聚酯废块、切粒工序的等外切片、纺丝间的放流丝、卷绕和后处理工段的拉伸废丝。（比如：涤纶丝断头，不能连续卷绕的）
3.每一捆涤纶纱织布时用完后剩余的边角料，需要从辊筒上面清除出来，再将辊筒退回纺纱厂从新利用，从而形成大量的边角料，这也是涤纶废丝产生的主要来源。
发明内容
本发明的目的在于提供一种由涤纶废丝醇解制备高耐候不饱和聚酯树脂的方法。涤纶废丝的主要成分为PET，并含有重量比为0-2.5%不等的纳米二氧化钛，而本发明通过化学醇解涤纶废丝并合成不饱和聚酯树脂形成乳白色的不饱和聚酯树脂，适用于彩色胶衣和户外人造石等高耐候性且颜色稳定的应用领域。
本发明涤纶废丝制备高耐候性不饱和聚酯树脂的方法如下：
不饱和二元酸和饱和二元酸的摩尔数之和要等于二元醇的摩尔数。
涤纶废丝是全消光和半消光的涤纶废丝，二元醇为二甘醇和丙二醇的其中一种或两种，醇解催化剂为醋酸锌，不饱和二元酸是顺丁烯二酸酐和富马酸的其中一种或两种，饱和二元酸是苯酐，单元酸是苯甲酸，稀释单体是苯乙烯，阻聚剂是氢醌和TBC 2：1重量混合。
附图说明
图1为乳白色的不饱和聚酯树脂
图2为本发明树脂制备的人造石英石。
具体实施方式
下面结合实施例详述本申请，但本申请并不局限于这些实施例。
实施案例1
制备步骤：
以上所述，仅是本申请的几个实施例，并非对本申请做任何形式的限制，虽然本申请以较佳实施例揭示如上，然而并非用以限制本申请，任何熟悉本专业的技术人员，在不脱离本申请技术方案的范围内，利用上述揭示的技术内容做出些许的变动或修饰均等同于等效实施案例，均属于技术方案范围内。
Claims (9)
1.由消光涤纶废丝制备高耐候性不饱和聚酯树脂的方法如下：
不饱和二元酸和饱和二元酸的摩尔数之和要约等于二元醇的摩尔数。
2.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的涤纶废丝是全消光和半消光的涤纶废丝。
3.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的二元醇为二甘醇和丙二醇的其中一种或两种。
4.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的醇解催化剂为醋酸锌。
5.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的不饱和二元酸是顺丁烯二酸酐和富马酸的其中一种或两种。
6.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的饱和二元酸是苯酐。
7.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的单元酸是苯甲酸。
8.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的稀释单体是苯乙烯。
9.根据权利要求1中所述涤纶废丝制备高耐候性不饱和聚酯树脂，其特征在于：所述的阻聚剂是氢醌和TBC 2：1重量混合。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004601A (zh) * | 2017-12-28 | 2018-05-08 | 宁波高新区盛文途纺织品有限公司 | 一种织物生产工艺 |
| CN111793199A (zh) * | 2020-08-07 | 2020-10-20 | 常熟理工学院 | 一种以废旧聚酯塑料瓶为原料的紫外光固化树脂及制备方法 |
| CN113373545A (zh) * | 2021-05-26 | 2021-09-10 | 杭州叶茂纺织有限公司 | 一种易着色dty丝 |
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| CN108004601A (zh) * | 2017-12-28 | 2018-05-08 | 宁波高新区盛文途纺织品有限公司 | 一种织物生产工艺 |
| CN111793199A (zh) * | 2020-08-07 | 2020-10-20 | 常熟理工学院 | 一种以废旧聚酯塑料瓶为原料的紫外光固化树脂及制备方法 |
| CN111793199B (zh) * | 2020-08-07 | 2022-05-24 | 常熟理工学院 | 一种以废旧聚酯塑料瓶为原料的紫外光固化树脂及制备方法 |
| CN113373545A (zh) * | 2021-05-26 | 2021-09-10 | 杭州叶茂纺织有限公司 | 一种易着色dty丝 |
| CN113373545B (zh) * | 2021-05-26 | 2022-07-29 | 杭州叶茂纺织有限公司 | 一种易着色dty丝 |
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