CN108585900B - 一种高黑度长寿命釉面涂料 - Google Patents
一种高黑度长寿命釉面涂料 Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 84
- 239000011248 coating agent Substances 0.000 title claims abstract description 78
- 239000000843 powder Substances 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 22
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000428 cobalt oxide Inorganic materials 0.000 claims abstract description 21
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 21
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000391 magnesium silicate Substances 0.000 claims abstract description 21
- 229910052919 magnesium silicate Inorganic materials 0.000 claims abstract description 21
- 235000019792 magnesium silicate Nutrition 0.000 claims abstract description 21
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 21
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 20
- 239000010445 mica Substances 0.000 claims abstract description 20
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 20
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims description 23
- 238000005245 sintering Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000003973 paint Substances 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 7
- 229940009868 aluminum magnesium silicate Drugs 0.000 claims description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
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Abstract
本发明公开了一种高黑度长寿命釉面涂料,包括30‑60重量份的粉体基料和20‑50重量份的载体粘结剂;所述的粉体基料包括以下重量份原材料制备得到:5‑10份二氧化硅,5‑30份三氧化二铁,5‑30份氧化铬,5‑30份二氧化钛,0.5‑15份氧化钴,0.2‑2份的碳化硅纤维,0.5‑3份的锂云母粉,0.1‑5份的三氧化二铝,1‑3份的硅酸镁,5‑10份的堇青石粉;该粉体基料中各原材料之间具有协同增效作用,能提高釉面涂层的黑度和减小热膨胀系数;而纤维材料与低收缩填料的配合使用,能降低釉面涂层的热膨胀率和冷却收缩率,显著降低釉面涂层的开裂脱落概率,增加涂层使用寿命。
Description
技术领域
本发明涉及节能材料领域,具体涉及一种高黑度长寿命釉面涂料,是一种红外辐射涂料。
背景技术
红外辐射涂料是由辐射粉体基料与载体粘结剂组成的特种功能节能涂料,其中,辐射粉体基料的作用是提供高辐射性能,载体粘结剂则使涂料牢固地粘结在基体表面。随着红外技术的不断发展,人们从大量的物质光谱中发现了许多物质的红外光谱发射率较高,并以这些物质为基料研制出多种红外辐射涂料,以改善物体表面的辐射特性达到强化辐射传热的目的。随着红外辐射涂料应用环境的不断改变,早期单种物质或数种物质的简单机械混合物得到的红外辐射涂料已难以满足其在更为苛刻环境中的应用。随着材料研究技术的不断发展,材料设计及其复合技术给红外辐射涂料的研制与应用注入了新的活力,使红外辐射涂料的辐射主成分逐步从单种物质或化合物向复合材料发展,使红外辐射涂料的研制出现了空前多元化发展势头。
现今,为了加大工业加热炉窑内辐射传热,提高炉窑内壁的发射率,红外辐射涂料已被广泛应用,其中,既有单种物质或数种物质的简单机械混合物得到的红外辐射涂料,也有通过材料设计及其复合技术制备得到的红外辐射涂料。然而,虽然通过红外辐射涂料的应用,显著改善了工业加热炉窑内辐射传热,提高了炉窑内壁的发射率,对节能减排起到了积极作用,但也由于红外辐射涂料中原材料的配比和/或制备方法的不合理等原因,导致大多红外辐射涂料依然存在使用寿命短、黑度较低的不足,严重限制了红外辐射涂料的推广应用。
发明内容
本发明的目的在于克服现有红外辐射涂料存在的使用寿命短、黑度较低的不足,提供一种高黑度长寿命釉面涂料;本发明釉面涂料的粉体基料中各原材料之间具有协同增效作用,能提高釉面涂层的黑度和减小热膨胀系数;而纤维材料与低收缩填料的配合使用,能降低釉面涂层的热膨胀率和冷却收缩率,显著降低釉面涂层的开裂脱落概率,增加涂层使用寿命。
为了实现上述发明目的,本发明提供了一种高黑度长寿命釉面涂料,包括30-60重量份的粉体基料和20-50重量份的载体粘结剂;
其中,所述的粉体基料包括以下重量份原材料制备得到:5-10份二氧化硅,5-30份三氧化二铁,5-30份氧化铬,5-30份二氧化钛,0.5-15份氧化钴,0.2-2份的碳化硅纤维,0.5-3份的锂云母粉,0.1-5份的三氧化二铝,1-3份的硅酸镁,5-10份的堇青石粉。
载体粘结剂包括硅溶胶、PA-80胶、水玻璃、羧甲基纤维素、磷酸二氢铝、铝溶胶中的一种或多种。
一种高黑度长寿命釉面涂料,不仅利用粉体基料中各原材料之间具有的协同增效作用,提高了煅烧生成的釉面涂层的黑度,减小了其热膨胀系数;同时,还通过纤维材料与低收缩填料的配合使用,使釉面涂层具有了更小的热膨胀率和冷却收缩率,从而降低了涂层中的内应力,显著降低了釉面涂层的开裂脱落概率,增加了使用寿命;本发明釉面涂料具有更长的使用寿命和更高的黑度,可显著改善工业加热炉窑内辐射传热,提高炉窑内壁的发射率,对红外辐射涂料的大规模推广应用具有积极作用。
上述一种高黑度长寿命釉面涂料,其中,所述的二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴在釉面涂料中起到红外吸收和辐射作用;优选的,其粒径为0.5-5μm,该粒径范围内,混合煅烧后得到的材料质地更均匀,红外辐射效率最好。
上述一种高黑度长寿命釉面涂料,其中,所述的碳化硅纤维在釉面涂料中具有防开裂作用,能降低釉面涂层的内应力,减小釉面涂层开裂概率;优选的,所述的碳化硅纤维直径为≤20nm,长径比为2-5︰1;纤维直径或长径比过大,均不利于其在涂料中的分散。最优选地,所述的碳化硅纤维长径比为2-4:1。
上述一种高黑度长寿命釉面涂料,其中,所述的锂云母粉、三氧化二铝、硅酸镁、堇青石粉作为釉面涂料的低收缩率填料,能降低釉面涂层的热膨胀率和冷却收缩率,从而减小釉面涂层开裂概率;优选的,其粒径为2-10μm,该粒径范围内,混合煅烧后得到的材料质地更均匀,对减小釉面涂层开裂概率的效果最好。最优选地,其粒径为3-8μm。
上述一种高黑度长寿命釉面涂料,其中,所述的粉体基料是将所述原材料通过以下方法制备得到的,包括以下步骤:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴、碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料在超声波中进行烧结,得到烧结料;
(3)将烧结料进行研磨,得到粉体基料。
其中,步骤(2)中,在混合料的烧结过程中进行超声波处理能减小烧结形成的晶粒粒径,使得到的烧结料密实度更大,从而形成的釉面涂层的密实度也越大,热传导性更好,对提高红外辐射效率具有促进作用;同时,密实度增大,抗开裂效果增强,对降低釉面涂层的开裂脱落概率也有一定的促进作用;优选的,所述的超声波频率为60-200KHz,超声波频率过大,会影响晶粒的成形,超声波频率过小,形成的晶粒粒径过大;最优选的,所述的超声波频率为120-150KHz。
其中,步骤(2)中烧结的温度和时间是根据烧结的材料和所要达到的性能决定的;优选的,所述的烧结温度为1200-1500℃,烧结时间为2-5h;该烧结温度和时间范围内,烧结得到的烧结料性能最佳。
其中,优选的,步骤(3)中研磨得到的粉体基料粒径为0.1-2μm,在该粒径范围内,粉体基料的分散性更好,应用更方便。
本发明的另一目的是提供一种制备上述釉面涂料的方法,确保釉面涂料的品质更加优秀。
本发明一种高黑度长寿命釉面涂料是将所述粉体基料和所述载体粘结剂按所述重量份配比进行混合得到的。
与现有技术相比,本发明的有益效果:
1、本发明釉面涂料的粉体基料中各原材料之间具有协同增效作用,能提高釉面涂层的黑度和减小热膨胀系数,釉面涂料的黑度高、寿命长。
2、本发明釉面涂料通过纤维材料与低收缩填料的配合使用,使釉面涂层具有了更小的热膨胀率和冷却收缩率,从而降低了涂层中的内应力,显著降低了釉面涂层的开裂脱落概率,增加了使用寿命。
3、本发明釉面涂料中的粉体基料在烧结过程中进行了超声波处理,减小了烧结形成的晶粒粒径,使得到的烧结料密实度更大,从而形成的釉面涂层的密实度也越大,热传导性更好,釉面涂料的黑度更高;同时,密实度增大,抗开裂效果增强,釉面涂料的使用寿命更长。
具体实施方式
下面结合试验例及具体实施方式对本发明作进一步的详细描述。但不应将此理解为本发明上述主题的范围仅限于以下的实施例,凡基于本发明内容所实现的技术均属于本发明的范围。
实施例1
一种釉面涂料原材料:包括45重量份的粉体基料和35重量份的载体粘结剂;
其中,粉体基料由以下重量份原材料制备得到:8份二氧化硅,20份三氧化二铁,20份氧化铬,20份二氧化钛,10份氧化钴,1份的碳化硅纤维,2份的锂云母粉,3份的三氧化二铝,2份的硅酸镁,8份的堇青石粉;其中,二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm;碳化硅纤维的直径为10nm,长径比为4︰1;锂云母粉、三氧化二铝、硅酸镁和堇青石的粒径为2-10μm;载体粘结剂为硅溶胶和PA-80胶;
制备方法为:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴,碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料在频率为150KHz超声波中进行烧结,烧结温度为1450℃,烧结时间为3h,得到烧结料;
(3)将烧结料进行研磨,得到粒径为1μm的粉体基料;
(4)将粉体基料和载体粘结剂按上述重量份配比进行混合得到釉面涂料。
实施例2
一种釉面涂料原材料:包括30重量份的粉体基料和50重量份的载体粘结剂;
其中,粉体基料由以下重量份原材料制备得到:5份二氧化硅,5份三氧化二铁, 30份氧化铬,5份二氧化钛,15份氧化钴,0.2份的碳化硅纤维, 3份的锂云母粉,0.1份的三氧化二铝,3份的硅酸镁,5份的堇青石粉;其中,二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm;碳化硅纤维的直径为5nm,长径比为5︰1;锂云母粉、三氧化二铝、硅酸镁和堇青石的粒径为2-10μm;载体粘结剂为水玻璃和羧甲基纤维素;
制备方法为:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴,碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料在频率为60KHz超声波中进行烧结,烧结温度为1500℃,烧结时间为2h,得到烧结料;
(3)将烧结料进行研磨,得到粒径为0.1μm的粉体基料;
(4)将粉体基料和载体粘结剂按上述重量份配比进行混合得到釉面涂料。
实施例3
一种釉面涂料原材料:包括60重量份的粉体基料和20重量份的载体粘结剂;
其中,粉体基料由以下重量份原材料制备得到:10份二氧化硅,30份三氧化二铁,5份氧化铬, 30份二氧化钛,0.5份氧化钴,2份的碳化硅纤维,0.5份的锂云母粉, 5份的三氧化二铝,1份的硅酸镁,10份的堇青石粉;其中,二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm;碳化硅纤维的直径为20nm,长径比为2︰1;锂云母粉、三氧化二铝、硅酸镁和堇青石的粒径为2-10μm;载体粘结剂为磷酸二氢铝;
制备方法为:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴,碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料在频率为200KHz超声波中进行烧结,烧结温度为1200℃,烧结时间为5h,得到烧结料;
(3)将烧结料进行研磨,得到粒径为2μm的粉体基料;
(4)将粉体基料和载体粘结剂按上述重量份配比进行混合得到釉面涂料。
对比例1
一种釉面涂料原材料:包括45重量份的粉体基料和35重量份的载体粘结剂;
其中,粉体基料由以下重量份原材料制备得到:8份二氧化硅,20份三氧化二铁,20份氧化铬,20份二氧化钛,10份氧化钴,1份的碳化硅纤维,3份的三氧化二铝,2份的硅酸镁,8份的堇青石粉;其中,二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm;碳化硅纤维的直径为10nm,长径比为4︰1;三氧化二铝、硅酸镁和堇青石的粒径为2-10μm;载体粘结剂为硅溶胶和PA-80胶;
制备方法与实施例1相同。
对比例2
一种釉面涂料原材料:包括45重量份的粉体基料和35重量份的载体粘结剂;
其中,粉体基料由以下重量份原材料制备得到:8份二氧化硅,20份三氧化二铁,20份氧化铬,20份二氧化钛,10份氧化钴,2份的锂云母粉,3份的三氧化二铝,2份的硅酸镁,8份的堇青石粉;其中,二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm;锂云母粉、三氧化二铝、硅酸镁和堇青石的粒径为2-10μm;载体粘结剂为硅溶胶和PA-80胶;
制备方法与实施例1相同。
对比例3
一种釉面涂料原材料:原材料及配比与实施例1相同;
制备方法为:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴,碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料进行烧结,烧结温度为1450℃,烧结时间为3h,得到烧结料;
(3)将烧结料进行研磨,得到粒径为1μm的粉体基料;
(4)将粉体基料和载体粘结剂按上述重量份配比进行混合得到釉面涂料。
将上述实施例1-3和对比例1-3中制备得到的釉面涂料,依据GB/T2998-2001、GJB332A-2004、YB/T376.1-1995等检测方法,进行性能检测,记录数据如下:
性能 | 黑度(ε) | 体积密度(g/cm<sup>3</sup>) | 热膨胀系数 | 热震稳定性(次) | 使用寿命(年) |
实施例1 | 0.97 | 2.36 | 0.26 | >38 | >7 |
实施例2 | 0.96 | 2.34 | 0.27 | >38 | >7 |
实施例3 | 0.96 | 2.35 | 0.25 | >38 | >7 |
对比例1 | 0.97 | 2.32 | 0.62 | <35 | <6 |
对比例2 | 0.96 | 2.31 | 0.55 | <34 | <6 |
对比例3 | 0.92 | 2.17 | 0.78 | <32 | <5 |
对上述实验数据分析可知,实施例1-3中制备得到的釉面涂料,黑度高,体积密度大,热膨胀系数小,热震稳定性好,使用寿命长;而对比例1中,原材料中未添加锂云母粉,导致釉面涂料热膨胀系数显著增大,抗热震性显著降低,使用寿命显著缩短;对比例2中,原材料未添加碳化硅纤维,导致釉面涂料的热膨胀系数显著增大,抗热震性显著降低,使用寿命显著缩短;对比例3中,在制备过程中,烧结时未用超声波进行处理,导致釉面涂料的黑度降低,体积密度显著减小,热膨胀系数显著增大,抗热震性显著降低,使用寿命显著缩短。
Claims (10)
1.一种釉面涂料,其特征在于,包括30-60重量份的粉体基料和20-50重量份的载体粘结剂;所述的粉体基料由以下重量份原材料:5-10份二氧化硅,5-30份三氧化二铁,5-30份氧化铬,5-30份二氧化钛,0.5-15份氧化钴,0.2-2份的碳化硅纤维,0.5-3份的锂云母粉,0.1-5份的三氧化二铝,1-3份的硅酸镁,5-10份的堇青石粉制备得到。
2.根据权利要求1所述的釉面涂料,其特征在于,载体粘结剂包括硅溶胶、水玻璃、羧甲基纤维素、磷酸二氢铝、铝溶胶中的一种或多种。
3.根据权利要求1所述的釉面涂料,其特征在于,所述的二氧化硅、三氧化二铁、氧化铬、二氧化钛和氧化钴的粒径为0.5-5μm。
4.根据权利要求1所述的釉面涂料,其特征在于,所述的碳化硅纤维直径为≤20nm,长径比为2-5︰1。
5.根据权利要求1所述的釉面涂料,其特征在于,所述的锂云母粉、三氧化二铝、硅酸镁和堇青石粉的粒径为2-10μm。
6.根据权利要求1所述的釉面涂料,其特征在于,所述的粉体基料是将原材料通过以下方法制备得到的,包括以下步骤:
(1)将二氧化硅、三氧化二铁、氧化铬、二氧化钛、氧化钴、碳化硅纤维、锂云母粉、三氧化二铝、硅酸镁和堇青石粉混合均匀,得到混合料;
(2)将混合料在超声波中进行烧结,得到烧结料;
(3)将烧结料进行研磨,得到粉体基料。
7.根据权利要求6所述的釉面涂料,其特征在于,步骤(2)中的超声波频率为60-200KHz。
8.根据权利要求7所述的釉面涂料,其特征在于,步骤(2)中的超声波频率为120-150KHz。
9.根据权利要求6所述的釉面涂料,其特征在于,步骤(2)中的烧结温度为1200-1500℃,烧结时间为2-5h。
10.根据权利要求6所述的釉面涂料,其特征在于,步骤(3)中研磨得到的粉体基料粒径为0.1-2μm。
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CN102992813A (zh) * | 2012-12-17 | 2013-03-27 | 四川科达节能技术有限公司 | 一种高温釉面涂料、其制备方法及粘结剂和使用方法 |
CN104031439A (zh) * | 2014-06-30 | 2014-09-10 | 北斗启明(北京)节能科技服务有限公司 | 耐高温纳米黑体涂层及其制备工艺 |
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