CN111005236A - 一种tpu合成革及其制备方法 - Google Patents

一种tpu合成革及其制备方法 Download PDF

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CN111005236A
CN111005236A CN201911300363.6A CN201911300363A CN111005236A CN 111005236 A CN111005236 A CN 111005236A CN 201911300363 A CN201911300363 A CN 201911300363A CN 111005236 A CN111005236 A CN 111005236A
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张惠良
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Jiaxing City Bo Er New Material Co ltd
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Abstract

本发明公开了一种TPU合成革及其制备方法，属于合成革技术领域，一种TPU合成革，包括下述重量份的原料：TPU粒子100份；填料10～40份；发泡剂1～8份；TPU色母粒1～10份；助剂1～4份。一种TPU合成革的制备方法，包括以下步骤：1)按配比称取原料，将其加入密炼机中，将其混合均匀；2)将混合均匀的混合物转移到开炼机中，进行开炼；3)将步骤2)中制得的塑化状态的物料转移到压延机中，调整好皮膜的厚度；4)将准备好的基布进行贴合；5)将贴合好的皮膜进行发泡、吸纹，即得所需要的产品。本发明的制备步骤简单，制得的TPU合成革的耐磨性远超过PVC人造革，湿干法生产的PU革，水性合成革以及AB型无溶剂革，使用寿命长。

Description

一种TPU合成革及其制备方法
技术领域
本发明涉及合成革材料领域，具体涉及一种TPU合成革及其制备方法，该热塑性聚氨酯弹性体采用压延工艺生产合成革。
背景技术
合成革是聚氨酯树脂与基布通过一定的工艺相结合的复合材料，因为合成革与真皮有相类似的触感、外观、柔软度，被广泛应用于沙发、鞋材、箱包，汽车桌椅等领域中。由于现有技术的PU合成革生产过程中使用了大量的有机溶剂，因此，不仅污染了环境，而且成品会有溶剂残留。
中国专利CN 108755171 A，公开了一种PU合成革的干法制备方法，包括下述原料：溶剂型聚氨酯400～450份、活性剂3.0～3.2份、轻质碳酸钙0.8～1.0份、白炭黑0.4～0.6份、氢氧化钾0.3～0.4份、有机硅表面活性剂0.2～0.3份、助剂0.8～1.0份，采用活性剂双层吸附增强分子间的吸引力，抑制溶剂的挥发，在涂膜成型后促使活性剂失活，溶剂瞬间蒸发冷凝，回收得到液态溶剂，溶剂残留率低至0.15～0.20％。但是上述PU合成革制备工序复杂，有溶剂残留，不环保，制得的产品耐磨性较差。
现有技术的合成革的工序繁复，而且市场上的PVC人造革、湿干法生产的PU革普遍存在耐磨性较差，使用时间长的话，表面会发生磨损，影响使用寿命。
发明内容
本发明要解决的技术问题是：研制开发一种TPU合成革及其制备方法，通过加热塑化TPU粒子，用压延工艺对其拉膜贴合，高温条件下化学起泡，制得的TPU合成革的耐磨性远超过PVC人造革，湿干法生产的PU革，水性合成革以及AB型无溶剂革，使用寿命长。
为了达到上述目的，本发明采用了以下技术方案：
一种TPU合成革，包括下述重量份的原料：
Figure BDA0002321632230000011
Figure BDA0002321632230000021
作为进一步的优选方案，所述TPU粒子为聚醚型TPU粒子、聚酯型TPU粒子中的任意一种或两种的混合物。
作为进一步的优选方案，所述TPU粒子为硬度为70A、75A、80A中的任意一种或两种的混合物；
作为进一步的优选方案，所述填料为碳酸钙、蒙脱土中的任意一种或两种的混合物；
作为进一步的优选方案，所述发泡剂为AC发泡剂、白发泡剂中的任意一种或两种的混合物；
作为进一步的优选方案，所述TPU色母粒为聚酯型、聚醚型色母粒中的任意一种或两种混合物；
作为进一步的优选方案，所述助剂为PE腊、PP腊、介酸酰胺腊、丁腈橡胶粉末中的任意一种或两种混合物。
一种TPU合成革的制备方法，包括以下步骤：
(1)按配比称取TPU粒子、填料、发泡剂、TPU色母粒、助剂，将其加入密炼机中，将其混合均匀；
(2)将混合均匀的混合物转移到密炼机将其混合均匀，然后将其全部转移到开炼机中，进行开炼，使其进一步混合，达到塑化状态，停止开炼；
(3)将步骤2)中制得的塑化状态的物料转移到压延机中，调整好皮膜的厚度，达到需要的厚度；
(4)将准备好的基布进行贴合；
(5)将贴合好的皮膜进行发泡、吸纹，即得所需要的产品。
作为进一步的优选方案，步骤3)中皮膜的厚度为0.2mm。
与现有技术相比，本发明具备下述有益效果：
(1)本发明制得的TPU合成革耐磨性远超过PVC人造革、湿干法生产的PU革、水性合成革、以及AB型无溶剂革；
(2)本发明制得的TPU合成革的综合性能佳，具体体现在剥离强度、耐折性、撕裂强度、拉伸强度也优于PVC人造革、湿干法生产的PU革、水性合成革、以及AB型无溶剂革，TPU是由二异氰酸酯、扩链剂和大分子二醇聚合反应得到的高分子聚合物，是属于一种聚氨酯的密实制品。其性能介于橡胶和塑料之间，具有高回弹性、吸震性、耐磨性、耐油性、耐撕裂性、耐化学腐蚀性及耐辐射性等性能，最终使得制得的合成革耐磨性能、耐用性有明显提升。
(3)本发明制得的TPU合成革的物性优于现有合成革产品的物性，是现有合成革产品的升级产品。同时，对比现有技术PU合成革生产过程中使用了大量的有机溶剂，不仅污染了环境，而且成品会有溶剂残留该产品制备过程中，本发明的TPU合成革制备过程中无任何有机溶剂，产品也未有有机溶剂残留，是环境友好型的生态合成革。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，以下结合实施例对本发明作进一步说明：
一种TPU合成革，包括下述重量份的原料：
Figure BDA0002321632230000031
一种TPU合成革的制备方法，包括以下步骤：
(1)按配比称取TPU粒子、填料、发泡剂、TPU色母粒、助剂，将其加入密炼机中，将其混合均匀；
(2)将混合均匀的混合物转移到密炼机将其混合均匀，然后将其全部转移到开炼机中，进行开炼，使其进一步混合，达到塑化状态，停止开炼；
(3)将步骤2)中制得的塑化状态的物料转移到压延机中，调整好皮膜的厚度，达到需要的厚度，皮膜的厚度为0.2mm；
(4)将准备好的基布进行贴合；
(5)将贴合好的皮膜进行发泡、吸纹，即得所需要的产品。
实施例1：
按配比称取硬度为75A的聚酯TPU粒子150KG、碳酸钙30KG、AC发泡剂9KG、TPU色母粒6KG，PE蜡助剂3KG，将其投入到密炼机中，将其混合均匀，然后，将全部料转移到开炼机中，进行开炼，达到塑化状态后，将其转移到压延机中，调整所需要的厚度0.2mm，将准备好的基布进行贴合，将贴合好的皮膜进行发泡吸纹，即得成品。其耐磨次数达到5000转(H-18砂轮，2KG，TABER耐磨仪)。
实施例2：
按配比称取硬度为70A的聚酯TPU粒子150KG、碳酸钙45KG、AC发泡剂8KG、TPU色母粒7KG，PE蜡助剂4KG，将其投入到密炼机中，将其混合均匀，然后，将全部料转移到开炼机中，进行开炼，达到塑化状态后，将其转移到压延机中，调整所需要的厚度0.2mm，将准备好的基布进行贴合，将贴合好的皮膜进行发泡吸纹，即得成品。其耐磨次数达到4800转(H-18砂轮，2KG，TABER耐磨仪)。
实施例3：
按配比称取硬度为80A的聚酯TPU粒子150KG、碳酸钙50KG、AC发泡剂8.5KG、TPU色母粒5KG，PP蜡助剂3.5KG，将其投入到密炼机中，将其混合均匀，然后，将全部料转移到开炼机中，进行开炼，达到塑化状态后，将其转移到压延机中，调整所需要的厚度0.2mm，将准备好的基布进行贴合，将贴合好的皮膜进行发泡吸纹，即得成品。其耐磨次数达到5200转(H-18砂轮，2KG，TABER耐磨仪)。
实施例4：
按配比称取硬度为75A的聚醚TPU粒子150KG、碳酸钙40KG、AC发泡剂7.5KG、TPU色母粒5.5KG，介酸酰胺蜡助剂2.5KG，将其投入到密炼机中，将其混合均匀，然后，将全部料转移到开炼机中，进行开炼，达到塑化状态后，将其转移到压延机中，调整所需要的厚度0.2mm，将准备好的基布进行贴合，将贴合好的皮膜进行发泡吸纹，即得成品。其耐磨次数达到5100转(H-18砂轮，2KG，TABER耐磨仪)。
实施例5：
按配比称取硬度为80A的聚醚TPU粒子150KG、碳酸钙48KG、AC发泡剂8.6KG、TPU色母粒5.6KG，丁腈橡胶粉助剂2.5KG，将其投入到密炼机中，将其混合均匀，然后，将全部料转移到开炼机中，进行开炼，达到塑化状态后，将其转移到压延机中，调整所需要的厚度0.2mm，将准备好的基布进行贴合，将贴合好的皮膜进行发泡吸纹，即得成品。其耐磨次数达到5050转(H-18砂轮，2KG，TABER耐磨仪)。
以上5个具体实例得到的产品与目前合成革的耐磨性对比测试，其耐磨性测试结果如表1所示：
表1实施例1～5耐磨性测试结果对比
TPU人造革 AB型无溶剂革 普通湿干法革 PVC人造革
实例1 5000转 1500转 800转 350转
实例2 4800转 1400转 750转 380转
实例3 5200转 1600转 850转 390转
实例4 5100转 1550转 780转 360转
实例5 5050转 1580转 760转 370转
从表1可知，本发明制得的TPU合成革在实施例5中能达到5050转，实施例1～5的测试结果平均为5000转，对比现有技术中的AB型无溶剂革的1500转、普通湿干法革的800转、PVC人造革的370转具备明显的优势，耐磨性能、耐用性有明显的提升；同时，对比现有技术PU合成革生产过程中使用了大量的有机溶剂，不仅污染了环境，而且成品会有溶剂残留该产品制备过程中，本发明的TPU合成革制备过程中无任何有机溶剂，产品也未有有机溶剂残留，环境友好，适合推广应用。
以上所述仅为本发明的优选实施方式，并非因此限制本发明的专利范围，凡是利用本发明所作的等效变换，均在本发明的专利保护范围内。

Claims (9)

1.一种TPU合成革，其特征在于，包括下述重量份的原料：
Figure FDA0002321632220000011
2.根据权利要求1所述TPU合成革，其特征在于，所述TPU粒子为聚醚型TPU粒子、聚酯型TPU粒子中的任意一种或两种的混合物。
3.根据权利要求1所述TPU合成革，其特征在于，所述TPU粒子为硬度为70A、75A、80A中的任意一种或两种的混合物。
4.根据权利要求1所述TPU合成革，其特征在于，所述填料为碳酸钙、蒙脱土中的任意一种或两种的混合物。
5.根据权利要求1所述TPU合成革，其特征在于，所述发泡剂为AC发泡剂、白发泡剂中的任意一种或两种的混合物。
6.根据权利要求1所述TPU合成革，其特征在于，所述TPU色母粒为聚酯型、聚醚型色母粒中的任意一种或两种混合物。
7.根据权利要求1所述TPU合成革，其特征在于，所述助剂为PE腊、PP腊、介酸酰胺腊、丁腈橡胶粉末中的任意一种或两种混合物。
8.一种权利要求1～7任意一项所述的TPU合成革的制备方法，其特征在于，包括以下步骤：
1)按配比称取TPU粒子、填料、发泡剂、TPU色母粒、助剂，将其加入密炼机中，将其混合均匀；
2)将混合均匀的混合物全部转移到开炼机中，进行开炼，使其进一步混合，达到塑化状态，停止开炼；
3)将步骤2)中制得的塑化状态的物料转移到压延机中，调整好皮膜的厚度，达到需要的厚度；
4)将准备好的基布进行贴合；
5)将贴合好的皮膜进行发泡、吸纹，即得所需要的产品。
9.根据权利要求8所述的TPU合成革的制备方法，其特征在于，步骤3)中皮膜的厚度为0.2mm。
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