CN106188937B - 一种复合型液体稀土热稳定剂 - Google Patents
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Abstract
本发明提供了一种复合型液体稀土热稳定剂，它的原料及原料的重量份数为：异辛酸镧10～15份，异辛酸锌10～20份，油酸钙20～30份，异辛酸镁15～20份，亚磷酸酯5～20份，环氧大豆油10～20份，季戊四醇5～20份，抗氧剂1010 1～10份。本发明将液体稀土类、液体钙金属皂类、液体镁金属皂类和其它辅助类热稳定剂进行有机复合，得到的热稳定剂具有热稳定性能优良、无粉尘污染、与PVC相容性好等优点，可广泛应用于各种PVC制品加工中。
Description
技术领域
本发明属于PVC热稳定剂领域，涉及一种复合型液体稀土热稳定剂。
背景技术
PVC在加工过程中易发生降解脱氯，严重影响其色泽和力学性能，通过添加热稳定剂可以解决该问题，热稳定剂种类多，性能各异，应用于PVC中应注意选取适合的热稳定剂品种，热稳定剂常用品种包括铅盐类、金属皂类、有机锡类、稀土类以及复合热稳定剂等，铅盐类热稳定剂长期以来占据着主导地位，但是由于铅盐对人体和环境的毒性问题，现在其应用已经被限制；有机锡类热稳定剂的价格较高；金属皂类热稳定剂是替代铅盐类热稳定剂的品种，具有较好的热稳定性能。目前，热稳定剂的研究开始向复合、无毒、液体热稳定剂发展，复合型热稳定剂可以综合多种热稳定剂的性能，提高热稳定性能，液体热稳定剂具有无粉尘污染、与树脂的相容性好、不易析出等优势，所以复合型稀土液体热稳定剂的研究应用符合热稳定剂的发展方向。
发明内容
本发明的目的在于提供一种复合型液体稀土热稳定剂，该热稳定剂将液体稀土类、液体钙金属皂类、液体镁金属皂类和其它辅助类热稳定剂进行有机复合，得到的热稳定剂具有热稳定性能优良、无粉尘污染、与PVC相容性好等优点，可广泛应用于各种PVC制品加工中。
为实现以上目的，本发明采用的技术方案为：
一种复合型液体稀土热稳定剂，它的原料及原料的重量份数为：
异辛酸镧 13份，
异辛酸锌 15份，
油酸钙 25份，
异辛酸镁 16份，
亚磷酸酯 7.5 份，
环氧大豆油 15 份，
季戊四醇 7 份，
抗氧剂1010 1.5份。
优选的，所述的亚磷酸酯为亚磷酸一苯二异辛酯、亚磷酸三辛酯、亚磷酸三壬酯的一种。
一种液体复合型稀土热稳定剂的制备方法，包括以下步骤：
（1）首先将亚磷酸酯、抗氧剂1010、季戊四醇加入反应釜中，加热至90℃，搅拌均匀；
（2）加入异辛酸锌、油酸钙和异辛酸镁，其中油酸钙分三次加入，搅拌直到溶解完毕；
（3）加入环氧大豆油，搅拌20min后再加入异辛酸镧，搅拌30min；
（4）降至室温后，出料，过滤掉残渣，得到透明溶液，即为液体复合型稀土热稳定剂。
本发明的有益效果有：
（1）本发明将液体稀土类、液体钙金属皂类、液体镁金属皂类和其它辅助类热稳定剂进行有机复合，得到的热稳定剂具有热稳定性能优良、无粉尘污染、与PVC相容性好等优点；
（2）本发明热稳定剂为液体形态，无粉尘污染，属于环保产品，应用广泛。
具体实施方式
下面结合具体实施例对本发明作进一步说明，但不限定本发明的保护范围。
实施例1
一种复合型液体稀土热稳定剂，它的原料及原料的重量为：
异辛酸镧 13Kg，
异辛酸锌 15 Kg，
油酸钙 25 Kg，
异辛酸镁 16 Kg，
亚磷酸三辛酯 7.5 Kg，
环氧大豆油 15 Kg，
季戊四醇 7 Kg，
抗氧剂1010 1.5 Kg。
制备方法包括以下步骤：
（1）首先将亚磷酸三辛酯、抗氧剂1010、季戊四醇加入反应釜中，加热至90℃，搅拌均匀；
（2）加入异辛酸锌、油酸钙和异辛酸镁，其中油酸钙分三次加入，搅拌直到溶解完毕；
（3）加入环氧大豆油，搅拌20min后再加入异辛酸镧，搅拌30min；
（4）降至室温后，出料，过滤掉残渣，得到透明溶液，即为液体复合型稀土热稳定剂。
为了验证实施例制备的热稳定剂的热稳定性能，采用刚果红法进行了热稳定时间测试，将97质量份和PVC和3质量份的热稳定剂在开炼机上混炼，制得PVC测试试样，参照国标GBT 2917.1-2002，将试样粉碎后放入试管中，装好刚果红试纸，将试管固定在180±1℃的油浴中，并使油面与试样表面相平，记录刚果红试纸变蓝的时间，即为此试样的热稳定时间，测试结果显示，热稳定时间为53min。
实施例2
一种复合型液体稀土热稳定剂，它的原料及原料的重量为：
异辛酸镧 13Kg，
异辛酸锌 15 Kg，
油酸钙 25 Kg，
异辛酸镁 16 Kg，
亚磷酸一苯二异辛酯 7.5 Kg，
环氧大豆油 15 Kg，
季戊四醇 7 Kg，
抗氧剂1010 1.5 Kg。
制备方法同实施例1。
按照实施例1所述的刚果红法测试了实施例2热稳定剂的热稳定时间，测试结果显示，热稳定时间为56min。
上述实施例仅为本发明的较佳实施例之一，并非以此限制本发明的保护范围，故：凡依本发明的结构、形状、原理所做的等效变化，均应涵盖于本发明的保护范围之内。
Claims (3)
1.一种复合型液体稀土热稳定剂，其特征在于，它的原料及原料的重量份数为：
异辛酸镧 13份，
异辛酸锌 15份，
油酸钙 25份，
异辛酸镁 16份，
亚磷酸酯 7.5 份，
环氧大豆油 15 份，
季戊四醇 7 份，
抗氧剂1010 1.5份。
2.根据权利要求1所述的复合型液体稀土热稳定剂，其特征在于，所述的亚磷酸酯为亚磷酸一苯二异辛酯、亚磷酸三辛酯、亚磷酸三壬酯的一种。
3.一种权利要求1所述的复合型液体稀土热稳定剂的制备方法，其特征在于，包括以下步骤：
（1）首先将亚磷酸酯、抗氧剂1010、季戊四醇加入反应釜中，加热至90℃，搅拌均匀；
（2）加入异辛酸锌、油酸钙和异辛酸镁，其中油酸钙分三次加入，搅拌直到溶解完毕；
（3）加入环氧大豆油，搅拌20min后再加入异辛酸镧，搅拌30min；
（4）降至室温后，出料，过滤掉残渣，得到透明溶液，即为复合型液体稀土热稳定剂。
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