CN103265784B - 一种耐油hips冰箱内胆材料及其制备方法 - Google Patents
一种耐油hips冰箱内胆材料及其制备方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
本发明公开了一种耐油HIPS冰箱内胆材料及其制备方法。其由下列重量比的原料制成：HIPS 80‑95%、增容剂 2‑5%、耐油弹性体 1‑5%、润滑剂 0.5‑2%、稳定剂 0.5‑3%、抗氧剂 0.5‑2%。本发明先将HIPS与稳定剂混合，再加入增容剂、耐油弹性体、润滑剂和抗氧剂混合均匀，最后再一起送入双螺杆挤出机中进行熔融共混挤出、冷却、造粒即可。本发明制备出来的HIPS冰箱内胆材料具有良好的耐低温性能、耐老化性能以及耐食用油腐蚀性能，韧性好，强度高，易于加工等特点，其生产工序简单易控，成本低，适用于工业化生产。
Description
技术领域
本发明涉及材料制备领域，具体涉及一种可获得耐油HIPS冰箱内胆材料及其制备方法。
背景技术
随着我国家用电器电冰箱、电冰柜行的突飞猛进的发展，冰箱专用内胆、门衬配套材料—塑料板材行业也得到了迅速发展。高抗冲聚苯 乙烯(HIPS)是我国冰箱内胆主要生产原料之一，具有优良的阻燃、耐水、耐化学药品腐蚀等性能。由于最近几年，受成本压力的影响，冰箱生产厂把板材厚度一再减薄，致使在冰箱内衬层吸附过程中，“吸裂率”升高，发给客户的冰箱出现“胆裂”，这已成为困扰家电集团的难题。究其原因，主要是HIPS板材的耐食用油性能差、韧性不够好。因此，提高HIPS板材的韧性和耐食用油性能，减少板材"吸裂"现象已成为冰箱板材行业的热点问题。
发明内容
本发明的目的在于提供一种韧性较好、耐食用油腐蚀、耐低温的HIPS冰箱内胆材料及其制备方法。
为达上述目的，本发明采用的具体方案为：
一种耐油HIPS冰箱内胆材料，由下列重量比的原料制成：HIPS 80-95%、增容剂 2-5%、耐油弹性体 1-5%、润滑剂 0.5-2%、稳定剂 0.5-3%、抗氧剂 0.5-2%。
一种耐油HIPS冰箱内胆材料的制备方法，包括以下步骤：
（1）将HIPS加热至50-60℃，加入稳定剂，搅拌混合5-10min，得混合物A，
（2）将混合物A加热至80-90℃，加入增容剂、耐油弹性体、润滑剂和抗氧剂，搅拌混合10-15min，得混合物B；
（3）将混合物B送入双螺杆挤出机中进行熔融共混挤出、冷却、造粒，双螺杆挤出机的共混挤出温度为：一区190-200℃，二区205-215℃，三区210-220℃，四区225-235℃，五区230-240℃，机头235-245℃；螺杆转速180-220r/min。
所述的增容剂可以为聚丙烯接枝马来酸酐共聚物、聚乙烯接枝马来酸酐共聚物、POE接枝马来酸酐共聚物、苯乙烯-马来酸酐-甲基丙烯酸环氧丙酯共聚物、SEBS接枝马来酸酐共聚物中的一种或几种。
所述的耐油弹性体可以为聚氨酯橡胶、氟橡胶、三元乙丙橡胶、氯丁橡胶、丁苯橡胶、丁腈橡胶、SEBS、SBS、硅橡胶中的一种或几种。
所述的润滑剂可以为硬脂酸、硬脂酸丁酯、油酰胺、乙撑双硬脂酰胺、聚乙烯蜡、硬脂酸钠中的一种或几种。
所述的稳定剂可以为硬脂酸钙、硬脂酸锌、硬脂酸钡、钙锌复合稳定剂、钡锌复合稳定剂中的一种或几种。
所述的抗氧剂可以为抗氧剂1010、抗氧剂168、抗氧剂1035、抗氧剂264中的一种或几种。
本发明的有益效果：
本发明配方中HIPS为挤板料，具有良好的稳定性、拉伸强度、抗冲击性能和耐化学腐蚀性能，耐油弹性体用来增加HIPS板材的耐油性和韧性，增容剂用来增加HIPS基体与弹性体间的相容性，促进弹性体增韧性能的发挥，，三者具有良好的协同作用，可以提高复合材料的韧性、耐食用油腐蚀、耐低温等性能。本发明制备出来的HIPS冰箱内胆材料具有良好的耐低温性能、耐老化性能以及耐食用油腐蚀性能，韧性好，强度高，易于加工等特点，其生产工序简单易控，成本低，适用于工业化生产。
具体实施方式
下面结合实施例对本发明作进一步描述。
实施例1
一种耐油HIPS冰箱内胆材料，由下列重量比的原料制成：HIPS 92%、聚丙烯接枝马来酸酐共聚物 1%、聚乙烯接枝马来酸酐共聚物 1%、三元乙丙橡胶 2%、硅橡胶 1%、乙撑双硬脂酰胺 1.5%、钡锌复合稳定剂 0.5%、抗氧剂1010 1%。
一种耐油HIPS冰箱内胆材料的制备方法，包括以下步骤：
（1）将HIPS加热至55℃，加入钡锌复合稳定剂，搅拌混合8min，得混合物A，
（2）将混合物A加热至85℃，加入聚丙烯接枝马来酸酐共聚物、聚乙烯接枝马来酸酐共聚物、三元乙丙橡胶、硅橡胶、乙撑双硬脂酰胺和抗氧剂1010，搅拌混合12min，得混合物B；
（3）将混合物B送入双螺杆挤出机中进行熔融共混挤出、冷却、造粒，双螺杆挤出机的共混挤出温度为：一区195℃，二区210℃，三区215℃，四区225℃，五区230℃，机头235℃；螺杆转速180r/min。
将上述制得的挤出料压片成型，取200mm×15mm×3.5mm样条，将样条用力弯曲后涂抹食用调和油10000次，样条表面未见开裂。样条拉伸强度为17.3MPa，断裂伸长率为15%，弹性模量为3153MPa，抗冲击强度为8.0KJ/m2，接触角为65°。
实施例2
一种耐油HIPS冰箱内胆材料，由下列重量比的原料制成：HIPS 93%、聚丙烯接枝马来酸酐共聚物 1%、SEBS接枝马来酸酐共聚物 1%、乙丙橡胶 2%、硅橡胶 1%、聚乙烯蜡0.5%、钙锌复合稳定剂 0.5%、抗氧剂168 1%。
一种耐油HIPS冰箱内胆材料的制备方法，包括以下步骤：
（1）将HIPS加热至60℃，加入钙锌复合稳定剂，搅拌混合5min，得混合物A，
（2）将混合物A加热至90℃，加入聚丙烯接枝马来酸酐共聚物、SEBS接枝马来酸酐共聚物、乙丙橡胶、硅橡胶、聚乙烯蜡和抗氧剂168，搅拌混合10min，得混合物B；
（3）将混合物B送入双螺杆挤出机中进行熔融共混挤出、冷却、造粒，双螺杆挤出机的共混挤出温度为：一区200℃，二区210℃，三区230℃，四区235℃，五区240℃，机头240℃；螺杆转速200r/min。
将上述制得的挤出料压片成型，取200mm×15mm×3.5mm样条，将样条用力弯曲后涂抹食用调和油10000次，样条表面未见开裂。样条拉伸强度为19.3MPa，断裂伸长率为16%，弹性模量为3163MPa，抗冲击强度为6.7KJ/m2，接触角为52°。
Claims (3)
1.一种耐油HIPS冰箱内胆材料，其特征在于，由下列重量比的原料制成：HIPS80-95％、增容剂2-5％、耐油弹性体1-5％、润滑剂0.5-2％、稳定剂0.5-3％、抗氧剂0.5-2％，
所述的增容剂为聚丙烯接枝马来酸酐共聚物、聚乙烯接枝马来酸酐共聚物的混合物；或者为聚丙烯接枝马来酸酐共聚物与SEBS接枝马来酸酐共聚物的混合物；
所述的耐油弹性体为三元乙丙橡胶和硅橡胶的混合物；
所述的润滑剂为乙撑双硬脂酰胺或聚乙烯蜡；
所述的稳定剂为钙锌复合稳定剂或钡锌复合稳定剂。
2.根据权利要求1所述的耐油HIPS冰箱内胆材料，其特征在于，所述的抗氧剂为抗氧剂1010、抗氧剂168、抗氧剂1035、抗氧剂264中的一种或几种。
3.一种如权利要求1或2所述的耐油HIPS冰箱内胆材料的制备方法，其特征在于包括以下步骤：
(1)将HIPS加热至50-60℃，加入稳定剂，搅拌混合5-10min，得混合物A，
(2)将混合物A加热至80-90℃，加入增容剂、耐油弹性体、润滑剂和抗氧剂，搅拌混合10-15min，得混合物B；
(3)将混合物B送入双螺杆挤出机中进行熔融共混挤出、冷却、造粒，双螺杆挤出机的共混挤出温度为：一区190-200℃，二区205-215℃，三区210-220℃，四区225-235℃，五区230-240℃，机头235-245℃；螺杆转速180-220r/min。
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| CN111825944A (zh) * | 2020-07-31 | 2020-10-27 | 海信容声(广东)冰箱有限公司 | 冰箱内胆、冰箱内胆材料及其制备方法 |
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