CN105585911B - 一种高导热高耐磨不粘涂料 - Google Patents

一种高导热高耐磨不粘涂料 Download PDF

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CN105585911B
CN105585911B CN201610035103.0A CN201610035103A CN105585911B CN 105585911 B CN105585911 B CN 105585911B CN 201610035103 A CN201610035103 A CN 201610035103A CN 105585911 B CN105585911 B CN 105585911B
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钱涛
李希
卜亚鹏
刘海兵
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Abstract

本发明涉及不粘涂料技术领域,为解决以不锈钢锅及铁锅作为基材的不粘锅的热分布较差,容易造成聚热点,从而造成涂膜破裂及烧焦食物,大大降低了涂层的使用寿命的问题,本发明提出了一种高导热高耐磨不粘涂料,该涂料成膜后具有优异的机械强度,较高的热导率,同时还具有VOC排放低、环保无毒的特点。

Description

一种高导热高耐磨不粘涂料
技术领域
本发明涉及不粘涂料技术领域,具体涉及一种高导热、高耐磨的不粘涂料。
背景技术
不粘涂料由于其具非常低的表面张力,使得其它物质很难在表面附着,由其制造的不粘锅有自问世以来给人们生活带来了极大的便利。不粘锅根据基材分为铝锅、不锈钢锅、铁锅。铝锅的特性是热分布优良,传热效果是不锈钢锅的16倍,且锅体较轻。但铝锅不易清洗、用油多时油烟大。不锈钢锅的特性是热分布不好,易产生聚热点而烧焦食物。不锈钢锅锅体重、不易清洗、用油多时易冒烟。铁搪瓷锅热分布不好,易糊锅底。这类锅不易清洗、表面容易破损,导致铁基材生锈。铁锅热分布不好,易产生聚热点而烧焦食物,其锅体重、不易清洗、易生锈,且用油多时油烟大。因此,目前的涂层不粘锅采用铝或者铝合金来作为锅基,这是因为这类金属的导热性能好。但是铝制品直接接触食物,多少会影响身体健康。但是由于以不锈钢锅及铁锅作为基材的不粘锅的热分布较差,容易造成聚热点,从而造成涂膜破裂及烧焦食物,大大降低了涂层的使用寿命。
中国专利公告号CN103740192A公开了一种石墨烯改性的氟树脂涂料,采用石墨烯提高氟树脂涂料的强度,其耐摩擦性能,与基材的附着力、耐冲击性、导热率均有显著提高,该涂料具有成本低,用量少,功效持久,使用简单方便的特点。其不足之处在于虽然石墨烯的加入能够提高入了的耐磨性能及导热率,但耐磨性及硬度仍显不足。
发明内容
为解决以不锈钢锅及铁锅作为基材的不粘锅的热分布较差,容易造成聚热点,从而造成涂膜破裂及烧焦食物,大大降低了涂层的使用寿命的问题,本发明提出了一种高导热高耐磨不粘涂料。该涂料成膜后具有优异的机械强度,较高的热导率,同时还具有VOC排放低、环保无毒的特点。
为了实现以上目的,本发明采用以下技术方案:一种高导热高耐磨不粘涂料由以下各组份制成,各组份重量份为:
所述的磺化聚醚醚酮(SPEEK)由以下步骤制成:将聚醚醚酮(PEEK)、磺化剂混合后加热到30~120℃,反应8~72h后,倒入冷水中静置1~48h,然后使用水反复洗涤至洗液pH为6~7,经50~80℃干燥后得到的产物为磺化聚醚醚酮。SPEEK可以进一步增强不粘涂料的耐磨性及机械强度。
作为优选,干燥选用真空干燥,真空干燥温度一般在70℃左右;真空干燥真空度一般控制在-0.08MPa左右,真空度太低干燥速度会很慢,真空度太高物料易暴溅;真空干燥时间一般以完全干燥为度,或以水分含量进行控制,不同物料干燥时间相差很大。
聚醚醚酮与磺化剂的重量比为1∶1~50,聚醚醚酮与冷水的重量比为1∶10~500,所述的冷水温度为0~10℃。
所述的磺化剂选自浓硫酸、三氧化硫-磷酸三乙酯、氯磺酸、三甲基硅磺酰氯中的一种或几种。
所述的含氟乳液选自PTFE、FEP、PVDF、FEVE、PFA乳液中的一种或几种。
所述的pH调节剂选自AMP-95、三乙胺、N,N-二甲基乙醇胺、氨水、三乙醇胺中的一种或几种。
所述的导热助剂选自石墨烯、碳纳米管、金刚石、石墨、铝粉、银粉中的一种或几种。石墨烯、碳纳米管、石墨可以是粉体,也可以是分散于水中的浆体;石墨烯或碳纳米管还包含改性各种官能团改性石墨烯或碳纳米管,如:羟基、羧基、羰基、氨基中的一种或多种。导热助剂可以提高不粘涂料的热导率、耐磨性及机械强度。
所述的有机溶剂选自NMP、DMAc、DMF、NEP、丙酮中的一种或几种。
所述的粘接料选自PES、PAI、PA、PPS中的一种或几种。
所述的耐高温颜填料包括耐高温颜料与耐高温填料,所述的耐高温颜料选自碳黑、铁红等无机耐高温颜料或者选自酞青蓝等有机耐高温颜料;所述的耐高温填料选自陶瓷粉或碳化硅。
所述的助剂包括分散剂、流平剂、消泡剂、增稠剂等;
所述的水选自蒸馏水、超纯水、去离子水中的一种。
不粘涂料的制备方法为:先将组成成份中的固体成份在水和有机溶剂中研磨到所需要的粒径后加入剩余组份。搅拌均匀得到目标产物。
与现有技术相比,本发明的有益效果是:该涂料成膜后具有优异的机械强度,较高的热导率、耐磨性,同时还具有VOC排放低、环保无毒的特点。
具体实施方式
下面通过实施例对本发明作进一步解释,本发明中,若非特指,所用原料均可市购或用常规方法得到。
实施例1
(1)SPEEK的制备
将10gPEEK,10g氯磺酸混合均匀,升温至120℃,反应72h后,倒入5℃的100g冷水中静置1h,使用蒸馏水洗涤至洗液pH为6~7,在真空干燥箱中经50℃真空干燥后得到SPEEK。
(2)不粘涂料的制备
将碳化硅5g、炭黑5g、分散剂1g、消泡剂0.5g、石墨烯1g、去离子水11g、NMP1g混合均匀后研磨至所需粒径后加入步骤1)制备的SPEEK10g、PTFE乳液40g、PES树脂20g、增稠剂0.5g、AMP-95(pH调节剂)5g搅拌均匀得到一种高导热高耐磨不粘涂料1。
实施例2
(1)SPEEK的制备
将10gPEEK,500g工业浓硫酸混合均匀,升温至30℃,反应48h后,倒入5℃的5000g冷水中静置5h,使用蒸馏水洗涤至洗液pH为6~7,在真空干燥箱经60℃真空干燥后得到SPEEK。
(2)不粘涂料的制备
将陶瓷粉8g、炭黑7g、分散剂1g、消泡剂0.5g、钻石粉3g、去离子水11g、NEP5g混合均匀后研磨至所需粒径后加入步骤(1)制备的SPEEK15g、FEVE乳液30g、PAI树脂15g、增稠剂0.5g、三乙胺(pH调节剂)5g搅拌均匀得到一种高导热高耐磨不粘涂料2。
实施例3
(1)SPEEK的制备
将10gPEEK,200g三甲基硅磺酰氯混合均匀,升温至80℃,反应8h后,倒入10℃的1000g冷水中静置48h,使用蒸馏水洗涤至洗液pH为6~7,在真空干燥箱经80℃真空干燥后得到SPEEK。
(2)不粘涂料的制备
将碳化硅5g、分散剂1g、消泡剂1g、石墨10g、去离子水10g混合均匀后研磨至所需粒径后加入步骤(1)制备的SPEEK10g、PTFE乳液20g、PFA乳液20g、FEVE乳液10g、PPS树脂10g、增稠剂2g、氨水(pH调节剂)1g搅拌均匀得到一种高导热高耐磨不粘涂料3。
实施例4
(1)SPEEK的制备
将10gPEEK,10g氯磺酸、100g三氧化硫-磷酸三乙酯混合均匀,升温至100℃,反应24h后,倒入0℃的3000g冷水中静置24h,使用蒸馏水洗涤至洗液pH为6~7,在真空干燥箱经70℃真空干燥后得到SPEEK。
(2)不粘涂料的制备
将炭黑5g、分散剂2g、消泡剂1g、银粉10g、铝粉10g、去离子水10g混合均匀后研磨至所需粒径后加入步骤(1)制备的SPEEK30g、FEP乳液20g、PES树脂5g、PA树脂5g、增稠剂1g、N,N-二甲基乙醇胺(pH调节剂)1g搅拌均匀得到一种高导热高耐磨不粘涂料4。
对比例:
不粘涂料的制备
将炭黑10g、碳化硅10g、分散剂2g、消泡剂1g、去离子水10g混合均匀后研磨至所需粒径后加入PTFE乳液40g、PES树脂20g、增稠剂2g、N,N-二甲基乙醇胺(pH调节剂)5g搅拌均匀得到不粘涂料。
测试例:高导热高耐磨不粘涂料测试性能如下表1所示:
表1:
实施例 附着力 硬度(H) 耐磨次数 热导率(W/m·K)
对比例 0级 1 2000次 500
实施例1 0级 1 5200次 1050
实施例2 1级 2 5500次 1200
实施例3 1级 1 4800次 800
实施例4 1级 3 6300次 920

Claims (7)

1.一种高导热高耐磨不粘涂料,其特征在于,所述的不粘涂料由以下各组份制成,各组份重量份为:
含氟乳液 20~50,
磺化聚醚醚酮 10~40,
粘接料 10~50,
耐高温颜填料 5~30,
助剂 1~5,
导热助剂 1~20,
水 10~30,
pH调节剂 1~5,
有机溶剂 0~10;
所述的磺化聚醚醚酮由以下步骤制成:将聚醚醚酮、磺化剂混合后加热到30~120℃,反应8~72h后,倒入冷水中静置1~48h,然后使用水反复洗涤至洗液pH为6~7,经50~80℃干燥后得到的产物为磺化聚醚醚酮;
所述的助剂包括分散剂、流平剂、消泡剂、增稠剂;
所述的粘接料选自PES、PAI、PA、PPS中的一种或几种。
2.根据权利要求1所述的一种高导热高耐磨不粘涂料,其特征在于,聚醚醚酮与磺化剂的重量比为1:1~50,聚醚醚酮与冷水的重量比为1:10~500,所述的冷水温度为0~10℃。
3.根据权利要求1或2所述的一种高导热高耐磨不粘涂料,其特征在于,所述的磺化剂选自浓硫酸、三氧化硫-磷酸三乙酯、氯磺酸的一种或几种。
4.根据权利要求1所述的一种高导热高耐磨不粘涂料,其特征在于,所述的含氟乳液选自PTFE、FEP、PVDF、FEVE、PFA乳液中的一种或几种。
5.根据权利要求1所述的一种高导热高耐磨不粘涂料,其特征在于,所述的pH调节剂选自AMP-95、三乙胺、N,N-二甲基乙醇胺、氨水、三乙醇胺中的一种或几种。
6.根据权利要求1所述的一种高导热高耐磨不粘涂料,其特征在于,所述的导热助剂选自石墨烯、碳纳米管、金刚石、石墨、铝粉、银粉中的一种或几种。
7.根据权利要求1所述的一种高导热高耐磨不粘涂料,其特征在于,所述的有机溶剂选自NMP、DMAC、DMF、NEP、丙酮中的一种或几种。
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