CN117343586A - 一种ptfe聚能涂料 - Google Patents
一种ptfe聚能涂料 Download PDFInfo
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- CN117343586A CN117343586A CN202311505466.2A CN202311505466A CN117343586A CN 117343586 A CN117343586 A CN 117343586A CN 202311505466 A CN202311505466 A CN 202311505466A CN 117343586 A CN117343586 A CN 117343586A
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- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 56
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 56
- 238000000576 coating method Methods 0.000 title claims abstract description 52
- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims abstract description 58
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229940072056 alginate Drugs 0.000 claims abstract description 58
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 58
- 229920000615 alginic acid Polymers 0.000 claims abstract description 58
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- 239000011777 magnesium Substances 0.000 claims abstract description 58
- 239000004005 microsphere Substances 0.000 claims abstract description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 64
- 229910052759 nickel Inorganic materials 0.000 claims description 32
- 238000007747 plating Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229910052582 BN Inorganic materials 0.000 claims description 17
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 13
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 12
- 239000003995 emulsifying agent Substances 0.000 claims description 12
- -1 alcohol ester Chemical class 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 claims description 10
- 229950006451 sorbitan laurate Drugs 0.000 claims description 10
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- 238000003756 stirring Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- TVJPBVNWVPUZBM-UHFFFAOYSA-N [diacetyloxy(methyl)silyl] acetate Chemical compound CC(=O)O[Si](C)(OC(C)=O)OC(C)=O TVJPBVNWVPUZBM-UHFFFAOYSA-N 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 6
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
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- 239000000661 sodium alginate Substances 0.000 claims description 6
- 229940005550 sodium alginate Drugs 0.000 claims description 6
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- RRIWRJBSCGCBID-UHFFFAOYSA-L nickel sulfate hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-]S([O-])(=O)=O RRIWRJBSCGCBID-UHFFFAOYSA-L 0.000 claims description 5
- 229940116202 nickel sulfate hexahydrate Drugs 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000001632 sodium acetate Substances 0.000 claims description 5
- 235000017281 sodium acetate Nutrition 0.000 claims description 5
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 5
- 229960000999 sodium citrate dihydrate Drugs 0.000 claims description 5
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
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- 230000000694 effects Effects 0.000 abstract description 14
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 6
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- OMVSWZDEEGIJJI-UHFFFAOYSA-N 2,2,4-Trimethyl-1,3-pentadienol diisobutyrate Chemical compound CC(C)C(=O)OC(C(C)C)C(C)(C)COC(=O)C(C)C OMVSWZDEEGIJJI-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
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- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
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- 230000005587 bubbling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 125000000168 pyrrolyl group Chemical group 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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Abstract
本申请涉及一种PTFE聚能涂料,组分包括:PTFE乳液、鳞片石墨、MgO‑SiC复合物、海藻酸镁微球和成膜剂。本申请采用鳞片石墨,具有良好的导热性能以及较好的分散性,作为导热填料添加能够有效提高聚能涂料的热导率;二氧化硅是热的良导体,有利于防止热量散失,提高导热系数,增加热传导速率,提升聚能效果;由海藻酸镁微球与导热填料形成均一致密的有序结构,且进一步通过具有的粘接能力的海藻酸镁微球的添加使导热填料和高分子基体之间形成较强结合,相对提高了涂料导热性能的稳定性,涂料导热性得到改善,从而提高对热量的吸收和利用率,提升聚能效果。
Description
技术领域
本申请涉及涂料的技术领域,尤其是涉及一种PTFE聚能涂料。
背景技术
厨具外涂装饰涂料主要是具有优异的耐热、耐候、耐腐蚀性、易清洁、保光性好等特点,已广泛应用市场。
公开号为CN110804362A的中国专利公开了一种厨具制品用抗菌涂料组合物,涂料组合物包括:铜5-10%,氧化钛复合体6-10%,全氟磺酰氟树脂2-5%,氧化铜5-10%,银-酚醛树脂复合体3-5%,磷酸酯盐2-4%,溶媒余量。
针对上述中的相关技术,发明人认为目前的一些厨具涂覆的涂料聚能效果不佳,加热时导热性差,对热量吸收率低,导致大部分的热能散失,降低热利用率。
发明内容
为了改善涂料导热性,提高对热量的吸收和利用率,从而提升聚能效果,本申请提供一种PTFE聚能涂料。
本申请提供的一种PTFE聚能涂料采用如下的技术方案:
一种PTFE聚能涂料,包括如下重量份数的组分:
60-70份PTFE乳液;
30-35份MgO-SiC复合物;
9-12份鳞片石墨;
8-10份海藻酸镁微球;
1-2份成膜剂。
通过采用上述技术方案,鳞片石墨具有良好的导热性能以及较好的分散性,作为导热填料添加能够有效提高聚能涂料的热导率;二氧化硅是热的良导体,有利于防止热量散失,提高导热系数,增加热传导速率,提升聚能效果;由海藻酸镁微球与导热填料形成均一致密的有序结构,且进一步通过具有的粘接能力的海藻酸镁微球的添加使导热填料和高分子基体之间形成较强结合,相对提高了涂料导热性能的稳定性,涂料导热性得到改善,从而提高对热量的吸收和利用率,提升聚能效果。
优选的,所述MgO-SiC复合物的制备方法为:将8-10份MgO和5-7份SiC研磨至粒径为10-15μm,然后加入15-20份甲基三乙酰氧基硅烷,再加入2-3份硫酸镁和5-6份水,在30-35℃下以超声功率200-300W,频率50-60kHz超声处理15-20min。
通过采用上述技术方案,MgO和SiC均可起到导热传热作用,再添加甲基三乙酰氧基硅烷对MgO和SiC进行表面改性修饰,进一步通过硫酸镁的共同作用,通过产生的镁离子增加甲基三乙酰氧基硅烷在MgO和SiC表面的吸附量,形成结合性较强界面,降低表面能,增加浸润性,提高MgO和SiC与PTFE乳液基体之间的界面结合力的效果,提高涂料整体性能;且MgO成本较低,量化生产效益高。
优选的,所述海藻酸镁微球的制备方法为:在1600-1800r/min搅拌速度下,将0.4-0.6份乳化剂S-85在40-50份山梨醇酐月桂酸酯中分散15-20min,加入25-30份3%海藻酸钠溶液分散30-35min,再加入含有0.2-0.3份乳化剂T-85的3-4份山梨醇酐月桂酸酯分散8-12min;最后滴加18-24份10%MgCl2溶液再分散20-25min,离心分离后再用去离子水洗涤3次。
通过采用上述技术方案,利用含有有机乳化剂成分的海藻酸镁微球与MgO-SiC复合物在超声作用下共混,一方面无机组分产生协同作用,另一方面海藻酸镁微球中的有机成分也可对MgO-SiC复合物进行有机化包覆修饰,改善MgO-SiC复合物、海藻酸镁微球以及PTFE乳液之间较差的界面结合力。
优选的,所述海藻酸镁微球由含镍镀液处理,按重量份数计,所述含镍镀液组分包括6-7份六水硫酸镍、12-18份次亚磷酸钠、3.5-4.5份二水柠檬酸钠、9-12份醋酸钠和30-40份水。
通过采用上述技术方案,在海藻酸镁微球表面进行镀镍处理,一方面通过金属镍覆层的引入提高热传递聚能效果,同时还可辅助提升涂料的耐高温性能。
优选的,所述含镍镀液处理海藻酸镁微球的方法为:含镍镀液组分中加入醋酸调节pH为3-5,将6-7份海藻酸镁微球在12-15份乙醇中以100-150W超声功率,25-30kHz频率超声分散5-8min,再滴加于10-12份含镍镀液中,以1000-1200r/min转速在50-55℃下搅拌3-4h,最后过滤并用去离子水洗涤3次。
通过采用上述技术方案,以超声分散和高速搅拌方式促使镀镍操作顺利进行。
优选的,按重量份数计,还包括3-5份氮化硼。
通过采用上述技术方案,氮化硼的导热系数高,可进一步与MgO-SiC复合物、鳞片石墨等产生协同增效的作用,提高导热系数,增加热传导速率,提升聚能效果。
优选的,按重量份数比计,所述PTFE乳液:MgO-SiC复合物:鳞片石墨:氮化硼=13:6:2:1。
通过采用上述技术方案,当MgO-SiC复合物、鳞片石墨和氮化硼等导热无机组分在PTFE乳液基体中达到占比的临界值时,导热无机组分之间产生相互作用,在PTFE乳液和海藻酸镁微球的分散及粘接辅助作用下,涂料体系中形成类似网状或链状的形态即导热网链,从而实现较为理想的导热性能。
优选的,所述成膜助剂为醇酯十六。
综上所述,本申请包括以下有益技术效果:
1.鳞片石墨具有良好的导热性能以及较好的分散性,作为导热填料添加能够有效提高聚能涂料的热导率;二氧化硅是热的良导体,有利于防止热量散失,提高导热系数,增加热传导速率,提升聚能效果;由海藻酸镁微球与导热填料形成均一致密的有序结构,且进一步通过具有的粘接能力的海藻酸镁微球的添加使导热填料和高分子基体之间形成较强结合,相对提高了涂料导热性能的稳定性;
2.利用含有有机乳化剂成分的海藻酸镁微球与MgO-SiC复合物在超声作用下共混,一方面无机组分产生协同作用,另一方面海藻酸镁微球中的有机成分也可对MgO-SiC复合物进行有机化包覆修饰,改善MgO-SiC复合物、海藻酸镁微球以及PTFE乳液之间较差的界面结合力;在海藻酸镁微球表面进一步进行镀镍处理,一方面通过金属镍覆层的引入提高热传递聚能效果,同时还可辅助提升涂料的耐高温性能;
3.当MgO-SiC复合物、鳞片石墨和氮化硼等导热无机组分在PTFE乳液基体中达到占比的临界值时,导热无机组分之间产生相互作用,在PTFE乳液和海藻酸镁微球的分散及粘接辅助作用下,涂料体系中形成类似网状或链状的形态即导热网链,从而实现较为理想的导热性能。
具体实施方式
以下对本申请作进一步详细说明。
本申请中,PTFE乳液由苏州卓铄塑胶原料有限公司提供,货号30,品牌杜邦,比重2.17g/cm3;鳞片石墨为石家庄冀汉东新材料科技有限公司提供的800目鳞片石墨,货号0001,密度2.2g/cm3,鳞片尺寸0.5-1mm,晶体粒径0.1mm;醇酯十六为佛山今佳新材料科技有限公司提供的伊仕曼TXIB,比重0.942-0.948,1MHz电容率(ASTM D 150)为4.5;氮化硼为深圳市宏元化工新材料科技有限公司提供,规格为C型号-粒度8-12μm,牌号Q/TY·J08.34-2022。
以下实施方式中所用原料除特殊说明外均可来源于普通市售。
实施例
实施例1
本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
MgO-SiC复合物的制备方法为:将8份MgO和5份SiC研磨至粒径为10μm,然后加入15份甲基三乙酰氧基硅烷,再加入2份硫酸镁和5份水,在30℃下以超声功率200W,频率50kHz超声处理15min。
海藻酸镁微球的制备方法为:在1600r/min搅拌速度下,将0.4份乳化剂S-85在40份山梨醇酐月桂酸酯中分散15min,加入25份3%海藻酸钠溶液分散30min,再加入含有0.2份乳化剂T-85的3份山梨醇酐月桂酸酯分散8min;最后滴加18份10%MgCl2溶液再分散20min,离心分离后再用去离子水洗涤3次。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂共混,以超声功率200W,频率50kHz超声处理15min。
实施例2
本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
MgO-SiC复合物的制备方法为:将10份MgO和7份SiC研磨至粒径为15μm,然后加入20份甲基三乙酰氧基硅烷,再加入3份硫酸镁和6份水,在35℃下以超声功率300W,频率60kHz超声处理20min。
海藻酸镁微球的制备方法为:在1800r/min搅拌速度下,将0.6份乳化剂S-85在50份山梨醇酐月桂酸酯中分散20min,加入30份3%海藻酸钠溶液分散35min,再加入含有0.3份乳化剂T-85的4份山梨醇酐月桂酸酯分散12min;最后滴加24份10%MgCl2溶液再分散25min,离心分离后再用去离子水洗涤3次。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂共混,以超声功率300W,频率60kHz超声处理25min。
实施例3
本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
MgO-SiC复合物的制备方法为:将9份MgO和6份SiC研磨至粒径为12μm,然后加入18份甲基三乙酰氧基硅烷,再加入3份硫酸镁和6份水,在32℃下以超声功率250W,频率55kHz超声处理18min。
海藻酸镁微球的制备方法为:在1700r/min搅拌速度下,将0.5份乳化剂S-85在45份山梨醇酐月桂酸酯中分散18min,加入28份3%海藻酸钠溶液分散32min,再加入含有0.3份乳化剂T-85的4份山梨醇酐月桂酸酯分散10min;最后滴加20份10%MgCl2溶液再分散22min,离心分离后再用去离子水洗涤3次。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球和成膜剂共混,以超声功率250W,频率55kHz超声处理20min。
实施例4
与实施例1的区别在于,本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球、成膜剂和氮化硼,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
海藻酸镁微球进一步由含镍镀液处理,含镍镀液组分包括6份六水硫酸镍、12份次亚磷酸钠、3.5份二水柠檬酸钠、9份醋酸钠和30份水。
含镍镀液处理海藻酸镁微球的方法为:含镍镀液组分中加入醋酸调节pH为3,将6份海藻酸镁微球在12份乙醇中以100W超声功率,25kHz频率超声分散5min,再滴加于10份含镍镀液中,以1000r/min转速在50℃下搅拌3h,最后过滤并用去离子水洗涤3次,得到镀镍海藻酸镁微球。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、氮化硼、镀镍处理的海藻酸镁微球和成膜剂共混,以超声功率200W,频率50kHz超声处理15min。
对镀镍海藻酸镁微球进行XRD分析,2θ=44.39°、51.40°、75.89°处出现衍射峰,对应镍的(111)、(200)和(220)晶面的特征衍射峰,表明了海藻酸镁微球上镍层的存在。
实施例5
与实施例2的区别在于,本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球、成膜剂和氮化硼,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
海藻酸镁微球进一步由含镍镀液处理,含镍镀液组分包括7份六水硫酸镍、18份次亚磷酸钠、4.5份二水柠檬酸钠、12份醋酸钠和40份水。
含镍镀液处理海藻酸镁微球的方法为:含镍镀液组分中加入醋酸调节pH为5,将7份海藻酸镁微球在15份乙醇中以150W超声功率,30kHz频率超声分散8min,再滴加于12份含镍镀液中,以1200r/min转速在55℃下搅拌4h,最后过滤并用去离子水洗涤3次,得到镀镍海藻酸镁微球。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、氮化硼、镀镍处理的海藻酸镁微球和成膜剂共混,以超声功率300W,频率60kHz超声处理25min。
实施例6
与实施例3的区别在于,本实施例公开了一种PTFE聚能涂料,包括如下组分:PTFE乳液、鳞片石墨、MgO-SiC复合物、海藻酸镁微球、成膜剂和氮化硼,其中,成膜助剂为醇酯十六,各组分含量如下表1所示。
海藻酸镁微球进一步由含镍镀液处理,含镍镀液组分包括7份六水硫酸镍、16份次亚磷酸钠、4份二水柠檬酸钠、10份醋酸钠和35份水。
含镍镀液处理海藻酸镁微球的方法为:含镍镀液组分中加入醋酸调节pH为4,将7份海藻酸镁微球在14份乙醇中以130W超声功率,28kHz频率超声分散7min,再滴加于11份含镍镀液中,以1100r/min转速在53℃下搅拌3.5h,最后过滤并用去离子水洗涤3次,得到镀镍海藻酸镁微球。
PTFE聚能涂料的制备方法为:将PTFE乳液、鳞片石墨、MgO-SiC复合物、氮化硼、镀镍处理的海藻酸镁微球和成膜剂共混,以超声功率250W,频率55kHz超声处理20min。
实施例7
与实施例4的区别在于,按重量份数比计,PTFE乳液:MgO-SiC复合物:鳞片石墨:氮化硼=13:6:2:1,各组分含量如下表1所示。
实施例8
与实施例4的区别在于,将MgO-SiC复合物替换为SiC,各组分含量如下表1所示。
实施例9
与实施例8的区别在于,将氮化硼替换为氧化钙,各组分含量如下表1所示。
实施例10
与实施例4的区别在于,将含镍镀液替换为吡咯。
实施例11
与实施例1的区别在于,成膜助剂醇酯十六替换为醇酯十二。
对比例
对比例1
与实施例1的区别在于,PTFE聚能涂料的组分仅包括60份PTFE乳液、12份鳞片石墨和1份成膜剂。
对比例2
与实施例1的区别在于,将MgO替换为氧化钙。
对比例3
与对比例2的区别在于,将SiC替换为二氧化硅。
对比例4
与实施例1的区别在于,将MgO-SiC复合物替换为SiC。
对比例5
与实施例1的区别在于,将海藻酸镁微球替换为海藻酸钠。
表1实施例1-9的组分含量表
性能检测试验
(1)耐高温测试;对实施例1和实施例4的PTFE聚能涂料进行耐高温性测试,将涂料涂覆于200mm×80mm×50mm的不锈钢板上,在200℃放置5h,实施例1的表面未开裂,有少许起泡;实施例4的涂料表面未开裂,不起泡;表明镀镍海藻酸镁微球和氮化硼的添加可提高耐高温性能。
(1)导热系数测试;以YBF-3导热系数测试仪对各实施例和对比例进行导热性能测试,以导热系数表征导热性,导热系数越大,则热传导效果更好,导热性更佳,测试结果如下表2所示。
表2各实施例和对比例的性能测试结果表
本具体实施方式仅仅是对本申请的解释,并非依此限制本申请的保护范围,本领域技术人员在阅读完本说明书后可以根据需要对本实施方式做出没有创造性贡献的修改,但只要在本申请的权利要求范围内都受到专利法的保护。
Claims (8)
1.一种PTFE聚能涂料,其特征在于:包括如下重量份数的组分:
60-70份PTFE乳液;
30-35份MgO-SiC复合物;
9-12份鳞片石墨;
8-10份海藻酸镁微球;
1-2份成膜剂。
2.根据权利要求1所述的一种PTFE聚能涂料,其特征在于:所述MgO-SiC复合物的制备方法为:将8-10份MgO和5-7份SiC研磨至粒径为10-15μm,然后加入15-20份甲基三乙酰氧基硅烷,再加入2-3份硫酸镁和5-6份水,在30-35℃下以超声功率200-300W,频率50-60kHz超声处理15-20min。
3.根据权利要求1所述的一种PTFE聚能涂料,其特征在于:所述海藻酸镁微球的制备方法为:在1600-1800r/min搅拌速度下,将0.4-0.6份乳化剂S-85在40-50份山梨醇酐月桂酸酯中分散15-20min,加入25-30份3%海藻酸钠溶液分散30-35min,再加入含有0.2-0.3份乳化剂T-85的3-4份山梨醇酐月桂酸酯分散8-12min;最后滴加18-24份10%MgCl2溶液再分散20-25min,离心分离后再用去离子水洗涤3次。
4.根据权利要求3所述的一种PTFE聚能涂料,其特征在于:所述海藻酸镁微球由含镍镀液处理,按重量份数计,所述含镍镀液组分包括6-7份六水硫酸镍、12-18份次亚磷酸钠、3.5-4.5份二水柠檬酸钠、9-12份醋酸钠和30-40份水。
5.根据权利要求4所述的一种PTFE聚能涂料,其特征在于:所述含镍镀液处理海藻酸镁微球的方法为:含镍镀液组分中加入醋酸调节pH为3-5,将6-7份海藻酸镁微球在12-15份乙醇中以100-150W超声功率,25-30kHz频率超声分散5-8min,再滴加于10-12份含镍镀液中,以1000-1200r/min转速在50-55℃下搅拌3-4h,最后过滤并用去离子水洗涤3次。
6.根据权利要求1所述的一种PTFE聚能涂料,其特征在于:按重量份数计,还包括1-3份氮化硼。
7.根据权利要求6所述的一种PTFE聚能涂料,其特征在于:按重量份数比计,所述PTFE乳液:MgO-SiC复合物:鳞片石墨:氮化硼=13:6:2:1。
8.根据权利要求1所述的一种PTFE聚能涂料,其特征在于:所述成膜助剂为醇酯十六。
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