CN104500733A - Preparation method for wear-resistant nano ceramic sealing rings - Google Patents

Preparation method for wear-resistant nano ceramic sealing rings Download PDF

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Publication number
CN104500733A
CN104500733A CN201410688676.4A CN201410688676A CN104500733A CN 104500733 A CN104500733 A CN 104500733A CN 201410688676 A CN201410688676 A CN 201410688676A CN 104500733 A CN104500733 A CN 104500733A
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ball
parts
rubber
nano
abrading
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CN104500733B (en
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苏国东
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China Team Electric Co ltd
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SHENGZHOU YIYUAN SEALING MEMBER Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped 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 aluminium oxide
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L11/00—Compositions of homopolymers or copolymers of chloroprene
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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  • Gasket Seals (AREA)

Abstract

The invention discloses a preparation method for wear-resistant nano ceramic sealing rings. The method includes that nanoscale materials of white corundum, silicon dioxide, silicon carbide, boron carbide, titanium oxide and the like are taken as green body materials, chloroprene rubber, silicon rubber, brominated butyl rubber, N660 carbon black, glass fibers, activators and PEG 20000 are taken as a rubber combinations, and the sealing rings are obtained through the hot vulcanization process. The preparation method is simple in process and easy for industrialization, and the sealing rings prepared are good in physical and chemical performance.

Description

A kind of preparation method of wear-resistant nano ceramics seal ring
Technical field
The invention belongs to seal ring field, particularly a kind of preparation method of wear-resistant nano ceramics seal ring.
Background technique
Along with the development of China's science and technology, various technique is also more and more higher for the demand of mechanical seal and motion seal, in the field such as metallurgy, machinery, chemical industry, medicine, food, anti-corrosive pump, automobile and pneumatic element, more and more need that precision is high, mechanical strength good, high temperature abrasion resistance is good, resistance to chemical corrosion is good, the seal ring of waterproof contour performance during temperature jump.
Ceramic seal circle is the emphasis of research now, has people by aluminium oxide 50 ~ 70wt%; Zirconium oxide 10 ~ 20wt%; Ethylene glycol 3 ~ 7wt%; Polyethylene 5 ~ 9wt%; One or more 2 ~ 5wt% in Ludox, Alumina gel or soft clay make fireproof clay sealing ring, but its purposes is limited, and sealability also awaits improving; And nano ceramics is incorporated into the focus that ceramic field is research now, due to the excellent physical and chemical performance that nanometer material has, the mechanics of nano ceramics, electricity and mechanical property greatly will be improved.
How pottery and seal ring are combined, formed by optimizing raw material, obtain high performance ceramic seal circle and remain the focus and difficult point that everybody pays close attention to.
Summary of the invention
The object of the invention is for the problems referred to above, developing one and nanometer material is incorporated in ceramic seal circle, by distributing suitable raw material rationally, obtaining the preparation method of the ceramic seal circle with high wear resistance.
Sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part is by hot vulcanization process layout in rubber, and the weight portion of nano ceramics part consists of:
Nanometer white fused alumina 50-70 part
Nano silicon 10-30 part
Nanometer silicon carbide 10-20 part
Fused magnesite 10-15 part
Nano boron carbide 5-10 part
Nano zine oxide 5-10 part
Nano-titanium oxide 5-10 part
Carbon black 5-10 part
Yttrium stable zirconium oxide 10-20 part
Andalusite 6-10 part
Tempering fiber 1-5 part
PVA 1-3 part
Aluminate cement 1-3 part;
The weight portion of rubber part consists of:
Neoprene 50-70 part
Silicone rubber 30-40 part
Brombutyl 30-50 part
N660 carbon black 20-40 part
Glass fibre 3-5 part
Activator 1-3 part
PEG20000 1-3 part;
The wearing coefficient of described seal ring reaches as high as 200g/cm3, and normal pressure compressive strength is 600-800Mpa, and normal pressure bending strength is 650-850Mpa, and resistance to maximum operation (service) temperature is not less than 1800 DEG C, and thermal conductivity is 30-44w/(mk).
Described wear-resistant ceramic seal ring is obtained by following preparation method:
(1) after ceramic raw material being mixed in proportion, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1-3h, obtain mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1-3h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10-20Mpa, obtain green compact, at 800 ~ 830 DEG C, biscuiting 30-40min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3-5h subsequently in sulfurizing pot, sulfurize temperature is 170-250 DEG C
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
As preferably, described nanometer white fused alumina is of a size of 40-80nm.
As preferably, described nano silicon is of a size of 80-100nm.
As preferably, the sulfurize temperature in step (3) is 220 DEG C, and cure time is 4h.
Beneficial effect of the present invention:
(1) various blank raw material and rubber raw materials are organically combined by creationary by the present invention, and by optimized fabrication technique, obtain good mechanical property, the wear-resistant ceramic seal ring of refractory heat-insulating, health environment-friendly.
(2) the present invention is by introducing nano inorganic material in the ceramic composition of seal ring, further increase the physical and chemical performance of seal ring, its wearing coefficient, normal pressure compressive strength, normal pressure bending strength and the parameter such as resistance to maximum operation (service) temperature and thermal conductivity all promote greatly compared to common seal ring.
(4) the seal ring preparation process for preparing of the present invention is simple, environmental protection, and is convenient to industrialized production.
Embodiment
Below in conjunction with specific embodiment, and reference data describes in further detail the present invention.Should be understood that these embodiments just in order to demonstrate the invention, but not limit the scope of the invention by any way.
Embodiment 1:
A preparation method for wear-resistant nano ceramics seal ring, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 70 parts
Nano silicon 30 parts
Nanometer silicon carbide 20 parts
Fused magnesite 15 parts
Nano boron carbide 10 parts
Nano zine oxide 10 parts
Nano-titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
Nanometer white fused alumina is of a size of 80nm;
Nano silicon is of a size of 100nm;
The wearing coefficient of described seal ring is 200g/cm3, and normal pressure compressive strength is 800Mpa, and normal pressure bending strength is 800Mpa, and resistance to maximum operation (service) temperature is 1980 DEG C, and thermal conductivity is 42w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3h subsequently in sulfurizing pot, sulfurize temperature is 170 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Embodiment 2:
A preparation method for wear-resistant nano ceramics seal ring, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 50 parts
Nano silicon 10 parts
Nanometer silicon carbide 10 parts
Fused magnesite 10 parts
Nano boron carbide 5 parts
Nano zine oxide 5 parts
Nano-titanium oxide 5 parts
Carbon black 5 parts
Yttrium stable zirconium oxide 10 parts
Andalusite 6 parts
Tempering fiber 1 part
PVA 1 part
Aluminate cement 1 part;
The weight portion of rubber part consists of:
Neoprene 50 parts
30 parts, silicone rubber
Brombutyl 30 parts
N660 carbon black 20 parts
3 parts, glass fibre
1 part, activator
PEG20000 1 part;
Nanometer white fused alumina is of a size of 40nm;
Nano silicon is of a size of 80nm;
The wearing coefficient 180g/cm3 of described seal ring, normal pressure compressive strength is 770Mpa, and normal pressure bending strength is 800Mpa, resistance to maximum operation (service) temperature 1990 DEG C, and thermal conductivity is 40w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 4h subsequently in sulfurizing pot, sulfurize temperature is 220 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Embodiment 3:
A preparation method for wear-resistant nano ceramics seal ring, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 60 parts
Nano silicon 30 parts
Nanometer silicon carbide 20 parts
Fused magnesite 15 parts
Nano boron carbide 10 parts
Nano zine oxide 10 parts
Nano-titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
Nanometer white fused alumina is of a size of 80nm;
Nano silicon is of a size of 90nm;
The wearing coefficient of described seal ring is 190g/cm3, and normal pressure compressive strength is 700Mpa, and normal pressure bending strength is 770Mpa, and resistance to maximum operation (service) temperature is 1940 DEG C, and thermal conductivity is 40w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 5h subsequently in sulfurizing pot, sulfurize temperature is 250 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Embodiment 4:
A preparation method for wear-resistant nano ceramics seal ring, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 50 parts
Nano silicon 20 parts
Nanometer silicon carbide 20 parts
Fused magnesite 15 parts
Nano boron carbide 10 parts
Nano zine oxide 10 parts
Nano-titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
Nanometer white fused alumina is of a size of 80nm;
Nano silicon is of a size of 90nm;
The wearing coefficient of described seal ring is 185g/cm3, and normal pressure compressive strength is 720Mpa, and normal pressure bending strength is 760Mpa, and resistance to maximum operation (service) temperature is 1900 DEG C, and thermal conductivity is 42w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 3h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 3h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 20Mpa, obtain green compact, at 830 DEG C, biscuiting 40min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3h subsequently in sulfurizing pot, sulfurize temperature is 170 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Embodiment 5:
A preparation method for wear-resistant nano ceramics seal ring, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 50 parts
Nano silicon 20 parts
Nanometer silicon carbide 20 parts
Fused magnesite 15 parts
Nano boron carbide 10 parts
Nano zine oxide 10 parts
Nano-titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
Nanometer white fused alumina is of a size of 40nm;
Nano silicon is of a size of 100nm;
The wearing coefficient of described seal ring is 186g/cm3, and normal pressure compressive strength is 740Mpa, and normal pressure bending strength is 730Mpa, and resistance to maximum operation (service) temperature is 1990 DEG C, and thermal conductivity is 41w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3h subsequently in sulfurizing pot, sulfurize temperature is 170 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Comparative example 1:
A preparation method for ceramic seal circle, sealing circle is divided into two-part, and inside is ceramic segment, and outside is rubber part, and ceramic segment passes through hot vulcanization process layout in rubber,
The weight portion of ceramic segment consists of:
White fused alumina 70 parts
Silica 30 parts
20 parts, silicon carbide
Fused magnesite 15 parts
Boron carbide 10 parts
10 parts, zine oxide
Titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
White fused alumina is of a size of 80 μm;
Silica is of a size of 100 μm;
The wearing coefficient of described seal ring is 100g/cm3, and normal pressure compressive strength is 400Mpa, and normal pressure bending strength is 600Mpa, and resistance to maximum operation (service) temperature is 1480 DEG C, and thermal conductivity is 31w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3h subsequently in sulfurizing pot, sulfurize temperature is 170 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
Comparative example 2:
A preparation method for ceramic seal circle, sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 70 parts
Nano silicon 0 part
Nanometer silicon carbide 0 part
Fused magnesite 15 parts
Nano boron carbide 0 part
Nano zine oxide 10 parts
Nano-titanium oxide 10 parts
Carbon black 10 parts
Yttrium stable zirconium oxide 20 parts
Andalusite 10 parts
Tempering fiber 5 parts
PVA 3 parts
Aluminate cement 3 parts;
The weight portion of rubber part consists of:
Neoprene 70 parts
40 parts, silicone rubber
Brombutyl 50 parts
N660 carbon black 40 parts
5 parts, glass fibre
3 parts, activator
PEG20000 3 parts;
Nanometer white fused alumina is of a size of 80nm;
The wearing coefficient of described seal ring is 150g/cm3, and normal pressure compressive strength is 600Mpa, and normal pressure bending strength is 720Mpa, and resistance to maximum operation (service) temperature is 1580 DEG C, and thermal conductivity is 36w/(mk).
Preparation process is as follows:
(1) after being mixed in proportion by ceramic raw material, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, obtains mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10Mpa, obtain green compact, at 800 DEG C, biscuiting 30min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3h subsequently in sulfurizing pot, sulfurize temperature is 170 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.

Claims (4)

1. a preparation method for wear-resistant nano ceramics seal ring, is characterized in that: sealing circle is divided into two-part, and inside is nano ceramics part, and outside is rubber part, and nano ceramics part passes through hot vulcanization process layout in rubber,
The weight portion of nano ceramics part consists of:
Nanometer white fused alumina 50-70 part
Nano silicon 10-30 part
Nanometer silicon carbide 10-20 part
Fused magnesite 10-15 part
Nano boron carbide 5-10 part
Nano zine oxide 5-10 part
Nano-titanium oxide 5-10 part
Carbon black 5-10 part
Yttrium stable zirconium oxide 10-20 part
Andalusite 6-10 part
Tempering fiber 1-5 part
PVA 1-3 part
Aluminate cement 1-3 part;
The weight portion of rubber part consists of:
Neoprene 50-70 part
Silicone rubber 30-40 part
Brombutyl 30-50 part
N660 carbon black 20-40 part
Glass fibre 3-5 part
Activator 1-3 part
PEG20000 1-3 part;
The wearing coefficient of described seal ring reaches as high as 200g/cm3, and normal pressure compressive strength is 600-800Mpa, and normal pressure bending strength is 650-850Mpa, and resistance to maximum operation (service) temperature is not less than 1800 DEG C, and thermal conductivity is 30-44w/(mk);
Preparation process is as follows:
(1) after ceramic raw material being mixed in proportion, carry out ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1-3h, obtain mixing homogeneous slurry, by sieving, after mist projection granulating, carry out secondary ball milling, ball-milling medium is purified water, abrading-ball is aluminium oxide abrading-ball, by ball milling 1-3h, the slurry after ball milling is placed in mould, compressing with the pressure isostatic pressed of 10-20Mpa, obtain green compact, at 800 ~ 830 DEG C, biscuiting 30-40min is carried out to green compact subsequently, obtain ceramic body;
(2) rubber raw materials is carried out fragmentation, ground and mixed, ball-milling medium is purified water, and abrading-ball is aluminium oxide abrading-ball, obtains homogeneous rubber raw materials;
(3) be injected in ceramic body by rubber raw materials through high-pressure injection moulding machine, carry out sulfuration 3-5h subsequently in sulfurizing pot, sulfurize temperature is 170-250 DEG C;
(4) wear-resistant ceramic seal ring is obtained through conventional reprocessing.
2. a preparation method for wear-resistant nano ceramics seal ring as claimed in claim 1, is characterized in that described nanometer white fused alumina is of a size of 40-80nm.
3. a preparation method for wear-resistant nano ceramics seal ring as claimed in claim 1 or 2, is characterized in that described nano silicon is of a size of 80-100nm.
4. a preparation method for wear-resistant nano ceramics seal ring as claimed in claim 3, it is characterized in that the sulfurize temperature in step (3) is 220 DEG C, cure time is 4h.
CN201410688676.4A 2014-11-26 2014-11-26 A kind of preparation method of wear-resistant nano ceramics sealing ring Expired - Fee Related CN104500733B (en)

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* Cited by examiner, † Cited by third party
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CN106045548A (en) * 2016-06-02 2016-10-26 苏州福德龙水产养殖有限公司 High-strength 3D nano ceramic printing material and preparation method thereof
CN112409709A (en) * 2020-10-15 2021-02-26 扬州千裕电气有限公司 High-pressure environment-friendly ceramic rubber sealing ring

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CN103627048A (en) * 2013-11-01 2014-03-12 国网河南省电力公司漯河供电公司 Compression-resistant, abrasion-resistant and corrosion-resistant transformer seal ring as well as production method thereof
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CN112409709A (en) * 2020-10-15 2021-02-26 扬州千裕电气有限公司 High-pressure environment-friendly ceramic rubber sealing ring

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