CN109280151A - 一种pvc革表面聚氨酯树脂及其制备方法 - Google Patents

一种pvc革表面聚氨酯树脂及其制备方法 Download PDF

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CN109280151A
CN109280151A CN201810991986.1A CN201810991986A CN109280151A CN 109280151 A CN109280151 A CN 109280151A CN 201810991986 A CN201810991986 A CN 201810991986A CN 109280151 A CN109280151 A CN 109280151A
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陈桂秋
陈华林
陈宇龙
夏小波
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Abstract

本发明公开了一种PVC革表面聚氨酯树脂的制备方法，所述制备方法主要包括以下内容：首先，向反应釜中加入一定量的NPG多元醇、异氰酸酯MDI及溶剂DMF，升温至50～60℃，反应0.5～1小时；然后，降温至35℃以下，滴入一定量的乙醇胺，继续反应1小时；加入一定量的乙二醇、羟基硅油，升温至70～75℃，反应2小时；然后，补加异氰酸MDI，一般不超过理论计算量的10%，调整粘度至600～1200 CPS\25℃，冷却过滤即可得到成品。本发明提供的PVC革表面聚氨酯树脂，有效解决了PVC革表面聚氨酯树脂接着力不够，增塑剂易析出，手感发粘不够干爽的缺点。

Description

一种PVC革表面聚氨酯树脂及其制备方法
技术领域
本发明涉及一种PVC革表面聚氨酯树脂及其制备方法，具体说是一种在PVC革表面的有较好接着力的聚氨酯树脂及其制备方法。
背景技术
目前皮革制品包括箱包、服装、鞋等，其表面形态多种多样，效果风格变化万千：高光高固、油皮风格、抛光风格、疯马变色、羊巴等，无论是在表面效果，还是在手感上，或者是产品的物性质量上，仍然在不断的追求仿制真皮效果。
PVC革因其具有较好的耐磨性和耐候性，且成本相对较低，在众多皮革品种里面占有很大的比列，一些大的品牌如LV、COACH等都有大量使用。但是PVC革也有其局限性，由于在生产PVC革的时候，为了使PVC革具有很好的柔软度和触感，添加了大量的DOP等增塑剂，长时间放置增塑剂会慢慢析出，浮到革面，现有的聚氨酯表面树脂接着力不够，使得PVC革的表面无法做出像普通PU革那么丰富多彩的表面效果。因此，如何得到一款聚氨酯树脂，能够有较强的接着力，有效压制增塑剂的析出，显得格外重要。
发明内容
本发明针对现有技术的不足，提出了一种新的PVC革表面聚氨酯树脂，有效解决了PVC革表面聚氨酯树脂接着力不够，增塑剂易析出，手感发粘不够干爽的缺点。
本发明解决技术问题所采用的技术方案是：一种PVC革表面聚氨酯树脂的制备方法，所述制备方法主要包括以下内容：首先，向反应釜中加入一定量的NPG多元醇、异氰酸酯MDI及溶剂DMF，升温至50～60℃，反应0.5～1小时；然后，降温至35℃以下，滴入一定量的乙醇胺，继续反应1小时；加入一定量的乙二醇、羟基硅油，升温至70～75℃，反应2小时；然后，补加异氰酸MDI，一般不超过理论计算量的10%，调整粘度至600～1200 CPS\25℃，冷却过滤即可得到成品；
在上述制备过程中，按重量份数计，各反应物料的具体用量如下：
NPG多元醇 20～25
乙醇胺 5～10
乙二醇 5～10
羟基硅油 1～2
DMF 55～65
异氰酸酯MDI 10～15（包括补加的量）。
进一步地，所述制备方法中，采用的各反应物料的具体用量如下：
NPG多元醇 20～23
乙醇胺 5～8
乙二醇 5～8
羟基硅油 1～1.7
DMF 55～60
异氰酸酯MDI 10～13（包括补加的量）。
优选地，所述制备方法中，采用的各反应物料的具体用量如下：
NPG多元醇 20
乙醇胺 5
乙二醇 5
羟基硅油 1
DMF 59
异氰酸酯MDI 10（包括补加的量）。
本发明的有益效果是：与现有技术相比，本发明提供的PVC革表面聚氨酯树脂主要具有以下几点优势：
1）针对PVC革接着力差的特点，接支反应乙醇胺，提高内聚能；
2）针对增塑剂析出的缺点，设计高固含量树脂，固含量控制在35～40%；选用带有支链结构的NPG2000分子量的聚合多元醇，提高分子间的密度，缩小间隙，压制增塑剂析出；
3）针对PVC革表面聚氨酯树脂不干爽、触感不加的缺陷，接枝反应羟基硅油，提高表面触感和滑爽度。
具体实施方式
以下结合实施例对本发明做进一步描述，但实施例不应解释为限定本发明的范围。
实施例1
一种PVC革表面聚氨酯树脂，按重量份数计，其组分及配比如下：NPG多元醇，20～25；乙醇胺，5～10；乙二醇，5～10；羟基硅油，1～2；DMF，55～65；异氰酸酯MDI，10～15。
根据上述组分及配比，一种PVC革表面聚氨酯树脂，其制备方法如下：向反应釜中加入NPG 2000多元醇、异氰酸酯MDI、溶剂DMF，升温至50～60℃反应0.5～1小时，降温至35度以下，滴入乙醇胺，反应1小时，加入乙二醇、羟基硅油，升温至70～75℃，反应2小时后，补加MDI调整粘度至600～1200 CPS\25℃，冷却过滤即可得到成品。
实施例2
一种PVC革表面聚氨酯树脂，按重量份数计，其组分及其最佳配比为：NPG多元醇，分子量2000，20；乙醇胺，5；乙二醇，5；羟基硅油，1；DMF，59；异氰酸酯MDI，10。
根据上述组分及配比，一种PVC革表面聚氨酯树脂，其制备方法如下：向反应釜中加入NPG 2000多元醇、异氰酸酯MDI、溶剂DMF，升温至50～60℃反应0.5～1小时，降温至35度以下，滴入乙醇胺，反应1小时，加入乙二醇、羟基硅油，升温至70～75℃，反应2小时后，补加MDI调整粘度至600～1200 CPS\25℃，冷却过滤即可得到成品。
其中实施例2为最佳实施例，其制出的产品为最佳产品。
以上实施方式仅用于说明本发明，而并非对本发明的限制，有关技术领域的普通技术人员，在不脱离本发明的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本发明的范畴，本发明的专利保护范围应由权利要求限定。

Claims (3)

1.一种PVC革表面聚氨酯树脂的制备方法，其特征在于，所述制备方法主要包括以下内容：首先，向反应釜中加入一定量的NPG多元醇、异氰酸酯MDI及溶剂DMF，升温至50～60℃，反应0.5～1小时；然后，降温至35℃以下，滴入一定量的乙醇胺，继续反应1小时；加入一定量的乙二醇、羟基硅油，升温至70～75℃，反应2小时；然后，补加异氰酸MDI，一般不超过理论计算量的10%，调整粘度至600～1200 CPS\25℃，冷却过滤即可得到成品；
在上述制备过程中，按重量份数计，各反应物料的具体用量如下：
NPG多元醇 20～25
乙醇胺 5～10
乙二醇 5～10
羟基硅油 1～2
DMF 55～65
异氰酸酯MDI 10～15；
上述异氰酸酯MDI的用量10～15重量份中包括了后续补加的异氰酸酯MDI。
2.如权利要求1所述的一种PVC革表面聚氨酯树脂的制备方法，其特征在于，所述制备方法中，采用的各反应物料的具体用量如下：
NPG多元醇 20～23
乙醇胺 5～8
乙二醇 5～8
羟基硅油 1～1.7
DMF 55～60
异氰酸酯MDI 10～13；
上述异氰酸酯MDI的用量10～13重量份中包括了后续补加的异氰酸酯MDI。
3.如权利要求1所述的一种PVC革表面聚氨酯树脂的制备方法，其特征在于，所述制备方法中，采用的各反应物料的具体用量如下：
NPG多元醇 20
乙醇胺 5
乙二醇 5
羟基硅油 1
DMF 59
异氰酸酯MDI 10；
上述异氰酸酯MDI的用量10重量份中包括了后续补加的异氰酸酯MDI。
CN201810991986.1A 2018-08-29 2018-08-29 一种pvc革表面聚氨酯树脂及其制备方法 Pending CN109280151A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111234510A (zh) * 2020-01-16 2020-06-05 上海汇得科技股份有限公司 一种聚氨酯树脂及其制备方法和用途
CN112876638A (zh) * 2021-01-08 2021-06-01 东莞市中森新材料有限公司 一种无粘聚氨酯弹性体的配方和生产工艺
CN113150241A (zh) * 2021-03-12 2021-07-23 扬州工业职业技术学院 一种抗涂鸦革用聚氨酯树脂及其制备方法

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JPH02277891A (ja) * 1989-04-14 1990-11-14 Achilles Corp 合成皮革
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