CN106242582A - 一种表面耐磨的绝缘子及其制造方法 - Google Patents
一种表面耐磨的绝缘子及其制造方法 Download PDFInfo
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- 239000012212 insulator Substances 0.000 title claims abstract description 62
- 238000005299 abrasion Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 238000002360 preparation method Methods 0.000 claims description 22
- 239000000839 emulsion Substances 0.000 claims description 20
- 229910052582 BN Inorganic materials 0.000 claims description 18
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 14
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 13
- 235000013312 flour Nutrition 0.000 claims description 13
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 12
- 239000004925 Acrylic resin Substances 0.000 claims description 11
- 229920000178 Acrylic resin Polymers 0.000 claims description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 11
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 11
- 235000015895 biscuits Nutrition 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
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- 239000000203 mixture Substances 0.000 claims description 5
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 235000019628 coolness Nutrition 0.000 claims description 4
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- 229910002804 graphite Inorganic materials 0.000 claims description 4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
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- 238000005245 sintering Methods 0.000 abstract description 10
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- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 6
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- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
本发明公开了一种表面耐磨的绝缘子及其制造方法,该绝缘子尺寸精度可达2μm,体积电阻率不低于1×1014Ω•cm、介电强度不低于550kV/cm、热导率不低于23W/m·K、抗弯强度不低于310Mpa、杨氏模数不低于280Gpa、断裂韧性不低于12Mpa;通过在加入了多种助烧结剂热压成型的氮化硅陶瓷基体上喷涂对该陶瓷表面形成耐磨性互补且填充其表层孔隙的耐磨涂层而制成;本发明的表面耐磨的绝缘子由于充分利用了氮化硅的热压烧结特性而获得了非常精确的轮廓尺寸,同时又克服了氮化硅陶瓷热压烧结易疏松、脆性大的缺陷,且经济性好,适合工业规模化生产。
Description
技术领域
本发明涉及电子元件领域,尤其涉及一种表面耐磨的绝缘子及其制造方法。
背景技术
绝缘子是一种特殊的绝缘控件,能够在架空输电线路中起到重要作用。
早年间绝缘子多用于电线杆,慢慢发展于高型高压电线连接塔的一端挂了很多盘状的绝缘体,它是为了增加爬电距离的,通常由玻璃或陶瓷制成,就叫绝缘子。绝缘子在架空输电线路中起着两个基本作用,即支撑导线和防止电流回地,这两个作用必须得到保证;同时,绝缘子应具有足够的电气绝缘强度、耐潮湿性能和耐高温性能。
在国内已申请的相关专利中,专利《高绝缘碳化硅/氮化硼陶瓷材料及其制备方法》(申请号:201310294766.0,公开日:2015-01-14),公开了一种碳化硅/氮化硼陶瓷材料及其制备方法,但该发明属于超高温烧结,设备成本和生产成本均很高,不适合工业规模化生产,同时这两种材料烧结出的陶瓷脆性很大(断裂韧性不高于6Mpa),另一方面由于烧结温度高,也没有其它填充物和表面致密化处理,致使成品易疏松、且尺寸精度低、难以控制;专利《一种绝缘导热的无机纳米复合陶瓷及其制备方法和用途》(申请号:201410310359.9,公开日:2015-12-30),公开了一种无机纳米复合陶瓷,保其有效成份制成陶瓷后均为高脆性材料,韧性很低,同时也没有将材料的综合性能优势发挥出来,也同样存在表面致密性的问题。
发明内容
为解决现有技术中存在的上述缺陷,本发明旨在提供一种轮廓尺寸精确,致密、韧性好、经济性好、适合工业规模化生产的表面耐磨的绝缘子及其制造方法。
为了实现上述目的,本发明采用以下技术方案:一种表面耐磨的绝缘子的制造方法,其特征在于包括以下步骤:
1)原材料的准备
①基体原材料的准备,包括:粒度1-2μm的硅粉50-60份、纯铁粉0.1-0.3份、粒度1-2μm的三氧化二钇粉末3-8份、粒度1-2μm的三氧化二铝粉末3-8份、硼酸铝晶须5-8份、氧化镁粉末3-6份、足量纯氮气;
②表面耐磨层原材料的准备,包括:水性丙烯酸树脂7-10份、粒度1-2μm的立方氮化硼粉末2-3份、纯净水4-5份、水性交联剂0.1-0.3份、水性附着力促进剂0.1-0.3份;
2)基体的制备
①将1)中步骤①准备的硅粉、纯铁粉、三氧化二钇粉末、三氧化二铝粉末、硼酸铝晶须、氧化镁粉末混合均匀,获得混合物料;
②将步骤①获得的混合物料放入碳纤维或纯石墨制成的粗模具,再将粗模具置于温度1180℃-1210℃环境下,充满纯氮气的保护气氛里,保温4天-6天,获得预制素坯;
③将步骤②获得的预制素坯采用金刚石刀具或立方氮化硼刀具按绝缘子要求形状尺寸进行机械加工,获得精细毛坯;
④将步骤③获得的精细毛坯置于温度1480℃-1530℃环境下,充满纯氮气且气压为8Mpa-10Mpa的保护气氛里,保温6h-8h;
⑤烧结完成后,炉温T不低于1000℃时随炉冷却;炉温T处于800℃≤T<1000℃半开炉门冷却;炉温T<800℃出炉空冷;空冷至T<150℃后即获得所需基体;
3)表面耐磨涂层乳液的制备
①将1)中步骤②准备的立方氮化硼粉末放入容器中,随后加入40-50%纯净水,用高速振荡机振荡1.5-2小时,制得分散液;②将水性丙烯酸树脂加入步骤①获得的分散液中,用高速搅拌机进行搅拌20-40分钟,制得复合乳液;③然后将水性交联剂及水性附着力促进剂加入步骤②获得的复合乳液中,进行搅拌混合,并均匀加入余下的纯净水,直至调节粘度至16-18S,即制得所述的表面耐磨涂层乳液。
4)获得绝缘子成品
①将3)获得的表面耐磨涂层乳液通过机械方式反复均匀喷涂在2)获得的基体表面,喷涂次数为5-7次,干结后喷涂厚度为3μm -5μm,获得预制绝缘子;
②将步骤①获得的预制绝缘子置于150℃-180℃的真空环境下进行烘焙2h-3h,获得绝缘子半成品;
③采用金刚石磨料振动去毛刺设备对步骤②获得的绝缘子半成品进行振动去毛刺及抛光处理,即获得所需绝缘子。
根据上述一种表面耐磨的绝缘子的制造方法所制造出的绝缘子,包括基体和表层两部分,其中基体原材料包括:粒度1-2μm的硅粉50-60份、纯铁粉0.1-0.3份、粒度1-2μm的三氧化二钇粉末3-8份、粒度1-2μm的三氧化二铝粉末3-8份、硼酸铝晶须5-8份、氧化镁粉末3-6份、足量纯氮气;表层原材料包括:水性丙烯酸树脂7-10份、粒度1-2μm的立方氮化硼粉末2-3份、纯净水4-5份、水性交联剂0.1-0.3份、水性附着力促进剂0.1-0.3份;表层厚度3μm-5μm。
根据上述一种表面耐磨的绝缘子的制造方法所制造出的绝缘子,其尺寸精度可达2μm,体积电阻率不低于1×1014Ω•cm、介电强度不低于550kV/cm、热导率不低于23W/m·K、抗弯强度不低于310Mpa、杨氏模数不低于280Gpa、断裂韧性不低于12Mpa。
与现有技术相比较,本发明具有以下优点:基体中植入了三氧化二钇、三氧化二铝、硼酸铝晶须,氧化镁,这些烧结且剂有三个作用:第一,增强了基体的韧性;第二,填充了基体内部的孔隙使基体内部致密化;第三,是与氮化硅匹配性很好的助烧结剂,降低了烧结温度,也因此降低了成本,提高了工艺的可控性;一般陶瓷材料都是绝缘性好的材料,但受限于陶瓷材料易疏松、且脆性很高的本质特性,一般无法适应恶劣工况(比如水汽渗入表层孔隙后导致绝缘性下降、运输和安装时产生表层摩擦崩缺损毁、风沙或冰雹震动、长期与绕在绝缘子上的导线发生微动磨蚀等),本发明在陶瓷基体的表面加入长寿命不易老化的树脂基材料涂层,在涂层中混入耐磨粒子,一方面大大增加了陶瓷的表面耐磨性,另一方面填充了陶瓷表面所有的开口孔隙,进一步提升了绝缘性,而且该涂料所用原材料均为常规材料,成本低,经济性好;本发明还利于了硅粉于氮化中低温烧结出的氮化硅陶瓷不易热裂但硬度较低,可机械加工的特性获得了非常精确的初始尺寸,后通过高温补烧使其它成份与氮化硅基体良好结合、优势互补,在基本不影响轮廓尺寸的前提下提升了材料的致密性、绝缘性、强度和耐磨性,又通过表面喷涂3μm -5μm将高温烧结损失的轮廓尺寸补充回来,同时填充了陶瓷表面的孔隙,使得最终成本的尺寸精度大大优于同类产品,利于装配与流水化生产;另外,本发明在烧结冷却时采用阶梯缓冷,本身绝缘子残余的热应力和组织应力都较低,在后期抛光处理中又加入了振动过程,使内应力均匀化,提升了整体性能的均匀性,降低了缺口敏感性。
具体实施方式
实施例1:
一种表面耐磨的绝缘子,包括基体和表层两部分,其中基体原材料包括:粒度1-2μm的硅粉50份、纯铁粉0.1份、粒度1-2μm的三氧化二钇粉末3份、粒度1-2μm的三氧化二铝粉末3份、硼酸铝晶须5份、氧化镁粉末3份、足量纯氮气;表层原材料包括:水性丙烯酸树脂7份、粒度1-2μm的立方氮化硼粉末2份、纯净水4份、水性交联剂0.1份、水性附着力促进剂0.1份;表层厚度3μm,它的制造方法包括以下步骤:
1)原材料的准备
①基体原材料的准备,包括:粒度1-2μm的硅粉50份、纯铁粉0.1份、粒度1-2μm的三氧化二钇粉末3份、粒度1-2μm的三氧化二铝粉末3份、硼酸铝晶须5份、氧化镁粉末3份、足量纯氮气;
②表面耐磨层原材料的准备,包括:水性丙烯酸树脂7份、粒度1-2μm的立方氮化硼粉末2份、纯净水4份、水性交联剂0.1份、水性附着力促进剂0.1份;
2)基体的制备
①将1)中步骤①准备的硅粉、纯铁粉、三氧化二钇粉末、三氧化二铝粉末、硼酸铝晶须、氧化镁粉末混合均匀,获得混合物料;
②将步骤①获得的混合物料放入碳纤维或纯石墨制成的粗模具,再将粗模具置于温度1180℃-1210℃环境下,充满纯氮气的保护气氛里,保温4天,获得预制素坯;
③将步骤②获得的预制素坯采用金刚石刀具或立方氮化硼刀具按绝缘子要求形状尺寸进行机械加工,获得精细毛坯;
④将步骤③获得的精细毛坯置于温度1480℃-1530℃环境下,充满纯氮气且气压为8Mpa的保护气氛里,保温6h;
⑤烧结完成后,炉温T不低于1000℃时随炉冷却;炉温T处于800℃≤T<1000℃半开炉门冷却;炉温T<800℃出炉空冷;空冷至T<150℃后即获得所需基体;
3)表面耐磨涂层乳液的制备
①将1)中步骤②准备的立方氮化硼粉末放入容器中,随后加入40%纯净水,用高速振荡机振荡1.5小时,制得分散液;②将水性丙烯酸树脂加入步骤①获得的分散液中,用高速搅拌机进行搅拌20分钟,制得复合乳液;③然后将水性交联剂及水性附着力促进剂加入步骤②获得的复合乳液中,进行搅拌混合,并均匀加入余下的纯净水,直至调节粘度至16S,即制得所述的表面耐磨涂层乳液。
4)获得绝缘子成品
①将3)获得的表面耐磨涂层乳液通过机械方式反复均匀喷涂在2)获得的基体表面,喷涂次数为5次,干结后喷涂厚度为3μm,获得预制绝缘子;
②将步骤①获得的预制绝缘子置于150℃的真空环境下进行烘焙2h,获得绝缘子半成品;
③采用金刚石磨料振动去毛刺设备对步骤②获得的绝缘子半成品进行振动去毛刺及抛光处理,即获得所需绝缘子。
按本实施例生产出的表面耐磨的绝缘子,其体积电阻率为2×1014Ω•cm、介电强度为580kV/cm、热导率为25W/m·K、抗弯强度为320Mpa、杨氏模数为300Gpa、断裂韧性为14Mpa;采用奥码拓公司生产的DN55高温干摩擦滑动、微动试验机对市售常规绝缘子和本发明的表面耐磨的绝缘子在同工况下进行干摩擦滑动、微动磨损试验,证实本发明的表面耐磨的绝缘子在干摩擦滑动、微动条件下寿命是市售常规绝缘子的17倍。
实施例2:
一种表面耐磨的绝缘子,包括基体和表层两部分,其中基体原材料包括:粒度1-2μm的硅粉60份、纯铁粉0.3份、粒度1-2μm的三氧化二钇粉末8份、粒度1-2μm的三氧化二铝粉末8份、硼酸铝晶须8份、氧化镁粉末6份、足量纯氮气;表层原材料包括:水性丙烯酸树脂10份、粒度1-2μm的立方氮化硼粉末3份、纯净水5份、水性交联剂0.3份、水性附着力促进剂0.3份;表层厚度5μm,它的制造方法包括以下步骤:
1)原材料的准备
①基体原材料的准备,包括:粒度1-2μm的硅粉60份、纯铁粉0.3份、粒度1-2μm的三氧化二钇粉末8份、粒度1-2μm的三氧化二铝粉末8份、硼酸铝晶须8份、氧化镁粉末6份、足量纯氮气;
②表面耐磨层原材料的准备,包括:水性丙烯酸树脂10份、粒度1-2μm的立方氮化硼粉末3份、纯净水5份、水性交联剂0.3份、水性附着力促进剂0.3份;
2)基体的制备
①将1)中步骤①准备的硅粉、纯铁粉、三氧化二钇粉末、三氧化二铝粉末、硼酸铝晶须、氧化镁粉末混合均匀,获得混合物料;
②将步骤①获得的混合物料放入碳纤维或纯石墨制成的粗模具,再将粗模具置于温度1180℃-1210℃环境下,充满纯氮气的保护气氛里,保温6天,获得预制素坯;
③将步骤②获得的预制素坯采用金刚石刀具或立方氮化硼刀具按绝缘子要求形状尺寸进行机械加工,获得精细毛坯;
④将步骤③获得的精细毛坯置于温度1480℃-1530℃环境下,充满纯氮气且气压为10Mpa的保护气氛里,保温8h;
⑤烧结完成后,炉温T不低于1000℃时随炉冷却;炉温T处于800℃≤T<1000℃半开炉门冷却;炉温T<800℃出炉空冷;空冷至T<150℃后即获得所需基体;
3)表面耐磨涂层乳液的制备
①将1)中步骤②准备的立方氮化硼粉末放入容器中,随后加入50%纯净水,用高速振荡机振荡2小时,制得分散液;②将水性丙烯酸树脂加入步骤①获得的分散液中,用高速搅拌机进行搅拌40分钟,制得复合乳液;③然后将水性交联剂及水性附着力促进剂加入步骤②获得的复合乳液中,进行搅拌混合,并均匀加入余下的纯净水,直至调节粘度至18S,即制得所述的表面耐磨涂层乳液。
4)获得绝缘子成品
①将3)获得的表面耐磨涂层乳液通过机械方式反复均匀喷涂在2)获得的基体表面,喷涂次数为7次,干结后喷涂厚度为5μm,获得预制绝缘子;
②将步骤①获得的预制绝缘子置于180℃的真空环境下进行烘焙3h,获得绝缘子半成品;
③采用金刚石磨料振动去毛刺设备对步骤②获得的绝缘子半成品进行振动去毛刺及抛光处理,即获得所需绝缘子。
按本实施例生产出的表面耐磨的绝缘子,其体积电阻率为5×1014Ω•cm、介电强度为600kV/cm、热导率为28W/m·K、抗弯强度为330Mpa、杨氏模数为330Gpa、断裂韧性为17Mpa;采用奥码拓公司生产的DN55高温干摩擦滑动、微动试验机对市售常规绝缘子和本发明的表面耐磨的绝缘子在同工况下进行干摩擦滑动、微动磨损试验,证实本发明的表面耐磨的绝缘子在干摩擦滑动、微动条件下寿命是市售常规绝缘子的21倍。
对所公开的实施例的上述说明,仅为了使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
Claims (2)
1.一种表面耐磨的绝缘子的制造方法,其特征在于包括以下步骤:
1)原材料的准备
①基体原材料的准备,包括:粒度1-2μm的硅粉50-60份、纯铁粉0.1-0.3份、粒度1-2μm的三氧化二钇粉末3-8份、粒度1-2μm的三氧化二铝粉末3-8份、硼酸铝晶须5-8份、氧化镁粉末3-6份、足量纯氮气;
②表面耐磨层原材料的准备,包括:水性丙烯酸树脂7-10份、粒度1-2μm的立方氮化硼粉末2-3份、纯净水4-5份、水性交联剂0.1-0.3份、水性附着力促进剂0.1-0.3份;
2)基体的制备
①将1)中步骤①准备的硅粉、纯铁粉、三氧化二钇粉末、三氧化二铝粉末、硼酸铝晶须、氧化镁粉末混合均匀,获得混合物料;
②将步骤①获得的混合物料放入碳纤维或纯石墨制成的粗模具,再将粗模具置于温度1180℃-1210℃环境下,充满纯氮气的保护气氛里,保温4天-6天,获得预制素坯;
③将步骤②获得的预制素坯采用金刚石刀具或立方氮化硼刀具按绝缘子要求形状尺寸进行机械加工,获得精细毛坯;
④将步骤③获得的精细毛坯置于温度1480℃-1530℃环境下,充满纯氮气且气压为8Mpa-10Mpa的保护气氛里,保温6h-8h;
⑤烧结完成后,炉温T不低于1000℃时随炉冷却;炉温T处于800℃≤T<1000℃半开炉门冷却;炉温T<800℃出炉空冷;空冷至T<150℃后即获得所需基体;
3)表面耐磨涂层乳液的制备
①将1)中步骤②准备的立方氮化硼粉末放入容器中,随后加入40-50%纯净水,用高速振荡机振荡1.5-2小时,制得分散液;②将水性丙烯酸树脂加入步骤①获得的分散液中,用高速搅拌机进行搅拌20-40分钟,制得复合乳液;③然后将水性交联剂及水性附着力促进剂加入步骤②获得的复合乳液中,进行搅拌混合,并均匀加入余下的纯净水,直至调节粘度至16-18S,即制得所述的表面耐磨涂层乳液;
4)获得绝缘子成品
①将3)获得的表面耐磨涂层乳液通过机械方式反复均匀喷涂在2)获得的基体表面,喷涂次数为5-7次,干结后喷涂厚度为3μm -5μm,获得预制绝缘子;
②将步骤①获得的预制绝缘子置于150℃-180℃的真空环境下进行烘焙2h-3h,获得绝缘子半成品;
③采用金刚石磨料振动去毛刺设备对步骤②获得的绝缘子半成品进行振动去毛刺及抛光处理,即获得所需绝缘子。
2.根据权利要求1所述一种表面耐磨的绝缘子的制造方法所制造出的绝缘子,其特征在于:
该表面耐磨的绝缘子包括基体和表层两部分,其中基体原材料包括:粒度1-2μm的硅粉50-60份、纯铁粉0.1-0.3份、粒度1-2μm的三氧化二钇粉末3-8份、粒度1-2μm的三氧化二铝粉末3-8份、硼酸铝晶须5-8份、氧化镁粉末3-6份、足量纯氮气;表层原材料包括:水性丙烯酸树脂7-10份、粒度1-2μm的立方氮化硼粉末2-3份、纯净水4-5份、水性交联剂0.1-0.3份、水性附着力促进剂0.1-0.3份;表层厚度3μm -5μm。
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