CN107311648A - 一种无铅ptc陶瓷及其制备方法 - Google Patents

一种无铅ptc陶瓷及其制备方法 Download PDF

Info

Publication number
CN107311648A
CN107311648A CN201710495783.9A CN201710495783A CN107311648A CN 107311648 A CN107311648 A CN 107311648A CN 201710495783 A CN201710495783 A CN 201710495783A CN 107311648 A CN107311648 A CN 107311648A
Authority
CN
China
Prior art keywords
product
lead
ethanol
obtains
ptc ceramics
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710495783.9A
Other languages
English (en)
Inventor
刘其斌
郭楚楚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Zhenhua Hongyun Electronics Co., Ltd.
Original Assignee
Guizhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou University filed Critical Guizhou University
Priority to CN201710495783.9A priority Critical patent/CN107311648A/zh
Publication of CN107311648A publication Critical patent/CN107311648A/zh
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
    • C04B35/468Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
    • C04B35/4682Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3201Alkali metal oxides or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232Titanium oxides or titanates, e.g. rutile or anatase
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3293Tin oxides, stannates or oxide forming salts thereof, e.g. indium tin oxide [ITO]
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3298Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Chemistry (AREA)

Abstract

本发明公开了一种无铅PTC陶瓷及其制备方法,本发明的陶瓷主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3xSnO2,其中0.01≤x≤0.04。其方法是先按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后称取相应重量的原料并混合,得A品;向A品中加入乙醇并研磨,使其研磨成粉,得B品;将B品干燥,使乙醇完全挥发,得C品;对C品预烧,然后随炉冷却,得D品;向D品中加入乙醇并进行二次研磨,得E品;在E品中加入粘结剂造粒,随后用40目筛过筛,得F品;将F品压成圆片,得G品;对G品先进行排胶,然后烧制,得成品。本发明的陶瓷具有无铅,环境污染小,居里温度高,性能好的特点。

Description

一种无铅PTC陶瓷及其制备方法
技术领域
本发明涉及一种PTC陶瓷及其制备方法,特别是一种无铅PTC陶瓷及其制备方法。
背景技术
PTC热敏陶瓷是一类极为关键的电子功能材料,是一种同时兼顾稳定发热性和控制性的电子功能陶瓷。
然而,现在市面上常见的是含铅体系的PTC陶瓷,其制备过程中所使用的PbO或Pb3O4含量较高,在生产、使用、回收、废弃的过程中,严重的破坏了生态环境,影响人类与环境和谐共处。因此,近年来关于无铅陶瓷的研究开展火热,但是,现目前的无铅陶瓷或多或少的都存在居里温度过低的缺陷,低于含铅体系PTC陶瓷的居里温度。
因此,现目前的PTC陶瓷或多或少的都存在含铅、污染大或居里温度较低的缺陷。
发明内容
本发明的目的在于,一种无铅PTC陶瓷及其制备方法。本发明的陶瓷具有无铅,环境污染小,居里温度高的特点。
本发明的技术方案:一种无铅PTC陶瓷,所述陶瓷的主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3-xSnO2,其中0.01≤x≤0.04。
前述的无铅PTC陶瓷,所述0.02≤x≤0.03。
前述的无铅PTC陶瓷,所述x=0.03。
一种前述的无铅PTC陶瓷的制备方法,包括如下步骤:
a、按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后称取相应重量的原料并混合,得A品;
b、向A品中加入乙醇并研磨,使其研磨成粉,得B品;
c、将B品干燥,使乙醇完全挥发,得C品;
d、对C品预烧,然后随炉冷却,得D品;
e、向D品中加入乙醇并进行二次研磨,得E品;
f、在E品中加入粘结剂造粒,随后用40目筛过筛,得F品;
g、将F品压成圆片,得G品;
h、对G品先进行排胶,然后烧制,得成品。
前述的无铅PTC陶瓷的制备方法,具体步骤如下:
a、按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后称取相应重量的原料,将称取的原料混合,得A品;
b、向每100g A品中加入乙醇130-170ml,并研磨,研磨转速为250-290r/min,研磨时间为7-9h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为70-80℃,干燥时间6-8h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1100-1250℃,保温时间2-4h,之后随炉冷却,得D品;
e、向每100g D品中加入乙醇130-170ml,并进行二次研磨,研磨转速为250-290r/min,研磨时间为7-9h,得E品;
f、向E品中加入粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在8-10MPa的压力下,E品被压成Ф10mm×1mm的圆片,得G品;
h、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温1.5-2.5h,彻底排胶,并以3℃/min的升温速率在1280℃保温1.5-2.5h,得成品。
前述的无铅PTC陶瓷的制备方法,所述原料在称取前,先放入烘箱中以80-120℃烘4-8h。
前述的无铅PTC陶瓷的制备方法,所述原料在称取前,先放入烘箱中以100℃烘6h。
前述的无铅PTC陶瓷的制备方法,所述研磨采用行星式球磨,球磨设备为尼龙球磨设备。
前述的无铅PTC陶瓷的制备方法,所述粘结剂为6%wt.的石蜡。
本发明的有益效果:
1、本发明通过调整PTC陶瓷的配方,去除传统PTC陶瓷配方中的铅,彻底解决了传统PTC陶瓷中铅对环境的污染,同时,通过该配方制备的PTC陶瓷不仅不含铅,而且还具有较高的居里温度。
2、本发明通过按照新的PTC陶瓷的配方调整制备工艺条件,制备出了既不含铅,同时又具有较高居里温度的PTC陶瓷,高于传统含铅陶瓷,最高居里温度达到了172℃。
附图说明
附图1为本发明陶瓷的SEM组织相貌,(a)为x=0.1、(b)为x=0.2、(c)为x=0.3、(d)为x=0.4;
附图2为本发明陶瓷的XRD图谱;
附图3为本发明陶瓷在10kHz测试的介电常数与温度的关系;
附图4为本发明陶瓷在10kHz测试的介电损耗随温度变化的关系;
附图5为本发明陶瓷的阻温特性曲线;
附图6为不同x取值时的陶瓷的居里温度。
具体实施方式
下面结合实施例对本发明作进一步的说明,但并不作为对本发明限制的依据。
本发明的实施例
实施例1、一种无铅PTC陶瓷,所述陶瓷的主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3-xSnO2,其中x=0.3;换算成重量,各组分为BaTiO3 68.3g、TiO2 28.8g、Nb2O5 0.07g、Bi2O3 1.68g、K2CO3 0.65g、SnO2 0.5g。
上述无铅PTC陶瓷的制备方法,具体步骤如下:
a、将陶瓷原料放入烘箱中以100℃烘6h,并按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后精确称取相应重量的原料,将称取的原料混合,得A品;
b、将A品放入尼龙球磨设备,并向每100gA品中加入乙醇150ml,采用行星球磨方式研磨,研磨的研磨转速为270r/min,研磨时间为8h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为75℃,干燥时间7h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1180℃,保温时间3h,之后随炉冷却,得D品;
e、向每100g D品中加入乙醇150ml,并进行二次研磨,研磨转速为270r/min,研磨时间为8h,得E品;
f、向E品中加入6%wt.的石蜡作为粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在9MPa的压力下,E品被压成Ф10mm×1mm的圆片,得G品;
g、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温2h,彻底排胶,并以3℃/min的升温速率在1280℃保温2h,得成品。
实施例2、一种无铅PTC陶瓷,所述陶瓷的主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3-xSnO2,其中x=0.01;换算成重量,各组分为BaTiO3 67.9g、TiO2 28.7g、Nb2O5 0.07g、Bi2O3 1.67g、K2CO3 0.56g、SnO2 1.1g。
上述无铅PTC陶瓷的制备方法,具体步骤如下:
a、将陶瓷原料放入烘箱中以80℃烘4h,并按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后精确称取相应重量的原料,将称取的原料混合,得A品;
b、将A品放入尼龙球磨设备,并向每100g加入乙醇130ml,采用行星球磨方式研磨,研磨的研磨转速为250r/min,研磨时间为9h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为70℃,干燥时间8h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1100℃,保温时间4h,之后随炉冷却,得D品;
e、向每100gD品中加入乙醇130ml,并进行二次研磨,研磨转速为250r/min,研磨时间为9h,得E品;
f、向E品中加入6%wt.的石蜡作为粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在8-10MPa的压力下,E品被压成Ф10mm×1mm的圆片,得G品;
h、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温1.5h,彻底排胶,并以3℃/min的升温速率在1280℃保温1.5h,得成品。
实施例3、一种无铅PTC陶瓷,所述陶瓷的主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3-xSnO2,其中x=0.03;换算成重量,各组分为BaTiO3 67.6g、TiO2 28.5g、Nb2O5 0.07g、Bi2O3 1.66g、K2CO3 0.57g、SnO2 1.6g。
上述无铅PTC陶瓷的制备方法,具体步骤如下:
a、将陶瓷原料放入烘箱中以120℃烘4h,并按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后精确称取相应重量的原料,将称取的原料混合,得A品;
b、将A品放入尼龙球磨设备,并向每100g加入乙醇170ml,采用行星球磨方式研磨,研磨的研磨转速为290r/min,研磨时间为7h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为80℃,干燥时间6h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1250℃,保温时间2h,之后随炉冷却,得D品;
e、向每100g D品中加入乙醇150ml,并进行二次研磨,研磨转速为290r/min,研磨时间为7h,得E品;
f、向E品中加入6%wt.的石蜡作为粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在10MPa的压力下,E品被压成Ф10mm×1mm的圆片,得G品;
h、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温2.5h,彻底排胶,并以3℃/min的升温速率在1280℃保温2.5h,得成品。
实施例4、一种无铅PTC陶瓷,所述陶瓷的主成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3-xSnO2,其中x=0.04;换算成重量,各组分为BaTiO3 67.2g、TiO2 28.4g、Nb2O5 0.07g、Bi2O3 1.65g、K2CO3 0.58g、SnO2 2.1g。
上述无铅PTC陶瓷的制备方法,具体步骤如下:
a、将陶瓷原料放入烘箱中以100℃烘6h,并按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后精确称取相应重量的原料,将称取的原料混合,得A品;
b、将A品放入尼龙球磨设备,并向每100g加入乙醇150ml,采用行星球磨方式研磨,研磨的研磨转速均为270r/min,研磨时间为8h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为75℃,干燥时间7h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1180℃,保温时间3h,之后随炉冷却,得D品;
e、向每100gD品中加入乙醇150ml,并进行二次研磨,研磨转速为270r/min,研磨时间为8h,得E品;
f、向E品中加入6%wt.的石蜡作为粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在9MPa的压力下,E品被压成Ф10mm×1mm的圆片,得G品;
h、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温2h,彻底排胶,并以3℃/min的升温速率在1280℃保温2h,得成品。
表1本发明实施例陶瓷的室温电阻率(ρRT)和升阻比lg(ρmax/ρmin)

Claims (9)

1. 一种无铅PTC陶瓷,其特征在于:所述陶瓷的成分组成为:(Ba0.96Bi0.02K0.02)Ti0.9985Nb0.0015O3- xSnO2,其中0.01≤x≤0.04。
2.根据权利要求1所述的无铅PTC陶瓷,其特征在于:所述0.02≤x≤0.03。
3.根据权利要求1所述的无铅PTC陶瓷,其特征在于:所述x=0.03。
4.一种根据权利要求1-3任一项所述的无铅PTC陶瓷的制备方法,其特征在于,包括如下步骤:
a、按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后称取相应重量的原料并混合,得A品;
b、向A品中加入乙醇并研磨,使其研磨成粉,得B品;
c、将B品干燥,使乙醇完全挥发,得C品;
d、对C品预烧,然后随炉冷却,得D品;
e、向D品中加入乙醇并进行二次研磨,得E品;
f、在E品中加入粘结剂造粒,随后用40目筛过筛,得F品;
g、将F品压成圆片,得G品;
h、对G品先进行排胶,然后烧制,得成品。
5.根据权利要求4所述的无铅PTC陶瓷的制备方法,其特征在于,具体步骤如下:
a、按所述陶瓷的成分组成进行计算,得出每一种原料的重量,然后称取相应重量的原料,得A品;
b、向每100g A品中加入乙醇130-170ml,并研磨,研磨转速为250-290 r/min,研磨时间为7-9 h,得B品;
c、将B品放入干燥箱中烘干至乙醇完全挥发,干燥温度为70-80℃,干燥时间6-8 h,得C品;
d、将C品预烧,预烧工艺为:先以2℃/min的速率升温,升温至500℃保温1h,然后以3℃/min的速率升温,升温至1100-1250℃,保温时间2-4 h,之后随炉冷却,得D品;
e、向每100g D品中加入乙醇130-170ml,并进行二次研磨,研磨转速为250-290 r/min,研磨时间为7-9 h,得E品;
f、向E品中加入粘结剂,将陶瓷粉末混合均匀,然后造粒,随后用40目筛过筛,得F品;
g、将F品采用干压成型,在8-10MPa的压力下,E品被压成Ф10 mm×1mm的圆片,得G品;
h、将G品放入排胶炉中,并以2℃/min的升温速率升温至600℃,然后保温1.5-2.5h,彻底排胶,并以3℃/min的升温速率在1280℃保温1.5-2.5h,得成品。
6.根据权利要求4或5所述的无铅PTC陶瓷的制备方法,其特征在于:所述原料在称取前,先放入烘箱中以80-120℃烘4-8h。
7.根据权利要求4或5所述的无铅PTC陶瓷的制备方法,其特征在于:所述原料在称取前,先放入烘箱中以100℃烘6h。
8.根据权利要求4或5所述的无铅PTC陶瓷的制备方法,其特征在于:所述研磨采用行星式球磨,球磨设备为尼龙球磨设备。
9.根据权利要求4或5所述的无铅PTC陶瓷的制备方法,其特征在于:所述粘结剂为6%wt.的石蜡。
CN201710495783.9A 2017-06-26 2017-06-26 一种无铅ptc陶瓷及其制备方法 Pending CN107311648A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710495783.9A CN107311648A (zh) 2017-06-26 2017-06-26 一种无铅ptc陶瓷及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710495783.9A CN107311648A (zh) 2017-06-26 2017-06-26 一种无铅ptc陶瓷及其制备方法

Publications (1)

Publication Number Publication Date
CN107311648A true CN107311648A (zh) 2017-11-03

Family

ID=60179790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710495783.9A Pending CN107311648A (zh) 2017-06-26 2017-06-26 一种无铅ptc陶瓷及其制备方法

Country Status (1)

Country Link
CN (1) CN107311648A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1673178A (zh) * 2005-01-04 2005-09-28 西北工业大学 钛酸铋纳-钛酸钡基压电陶瓷及其制备方法
CN106316387A (zh) * 2016-08-10 2017-01-11 安徽省宁国天成电工有限公司 一种新型ptc陶瓷热敏电阻介质材料及其制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1673178A (zh) * 2005-01-04 2005-09-28 西北工业大学 钛酸铋纳-钛酸钡基压电陶瓷及其制备方法
CN106316387A (zh) * 2016-08-10 2017-01-11 安徽省宁国天成电工有限公司 一种新型ptc陶瓷热敏电阻介质材料及其制备方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
L.A.XUE等: "the influence of ionic radii on the incorporation of trivalent dopants into batio3", 《MATERIALS SCIENCE AND ENGINEERING》 *
韦继锋等: "Nb掺杂BaTiO3-Bi0.5K0.5TiO3陶瓷系统PTCR性能的研究", 《人工晶体学报》 *

Similar Documents

Publication Publication Date Title
CN104795128B (zh) 一种无铅电阻浆料及其制造工艺和应用
CN105390673B (zh) 一种锂离子电池高容量低反弹石墨负极材料的制备方法
CN101700976B (zh) 一种高压避雷器用非线性电阻片的配方及其制造方法
CN101188156B (zh) 高居里温度BaTiO3基正温度系数热敏电阻及制备方法
CN106904950A (zh) 一种低温烧结的95氧化铝陶瓷材料
CN109574656A (zh) 一种高储能钛酸铋钠-钛酸锶基介质材料及其制备方法
CN111116173B (zh) 一种低温烧结ntc热敏电阻器陶瓷材料及制备方法
CN104944933B (zh) 高频变压器用高电感值高磁导率铁氧体磁芯的制备方法
CN100527290C (zh) 微波烧结氧化锌压敏电阻的方法
CN111606703B (zh) 一种氧化锌电阻片及其制备方法和用途
CN101604566B (zh) 一种适合低浪涌电压电器使用的氧化锌压敏电阻材料及制备方法
CN104261801A (zh) 一种微波炉用的陶瓷承载浅盘及其制作方法
CN105869887B (zh) 一种x9r高温稳定多层陶瓷电容器瓷浆及其器件制备方法
CN106145933A (zh) 一种高居里温度(Tc > 190℃)低铅PTCR陶瓷材料制备方法
CN105957666A (zh) 一种避雷器用压敏电阻阀片及其制备方法
CN103787653A (zh) 一种碳改性CaCu3Ti4O12高介电材料的制备方法
CN104311004B (zh) Ptc陶瓷材料及提高ptc陶瓷材料居里点以下电阻温度稳定性的方法
CN107445595A (zh) 利用微波烧结制备刚玉磨料的方法
CN109574653A (zh) 一种高非线性、低漏电流压敏电阻片及其制备方法
CN104557024B (zh) 高居里温度无铅钛酸钡基ptcr陶瓷材料及制备和应用
CN110156454B (zh) 氧化锌压敏电阻片的制备方法
CN101423388B (zh) 一次固相合成ptc热敏电阻马达启动陶瓷芯片料配方及生产工艺
CN108585809A (zh) 一种低温烧结SiO2基微波介质陶瓷材料及其制备方法
CN103864420B (zh) 一种微波介质陶瓷材料的制备方法
CN107311648A (zh) 一种无铅ptc陶瓷及其制备方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20171229

Address after: 550025 College of materials and metallurgy, Huaxi District, Huaxi District, Guiyang, Guizhou

Applicant after: Guizhou University

Applicant after: Guizhou Zhenhua Hongyun Electronics Co., Ltd.

Address before: 550025 College of materials and metallurgy of Huaxi West Campus of Huaxi District, Guiyang City, Guizhou, Guizhou

Applicant before: Guizhou University

TA01 Transfer of patent application right
RJ01 Rejection of invention patent application after publication

Application publication date: 20171103

RJ01 Rejection of invention patent application after publication