CN107674547B - A kind of two-step method low temperature consolidates magnet ring special powder and preparation method thereof fastly - Google Patents
A kind of two-step method low temperature consolidates magnet ring special powder and preparation method thereof fastly Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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Abstract
The invention discloses a kind of two-step method low temperature to consolidate magnet ring special powder and preparation method thereof fastly, the two-step method low temperature consolidates magnet ring special powder fastly and expects that master batch and B material master batch form by A, A material master batch by drying, weighing, blending, melting extrusion, cold pressing, be crushed be made, B material by drying, weighing, blending, melting extrusion, cold pressing, be crushed be made, A expects that master batch with B material master batch 9:1 in mass ratio carries out that granulation is blended, and obtains finished powder by crushing, sieving, magnetic separation.Two-step method low temperature of the present invention consolidates magnet ring special powder excellent stability fastly, and it is short to overcome existing storage period, summer premature cure and the technological deficiencies such as mobility is unstable in transit.
Description
Technical field
The present invention relates to a kind of two-step method low temperature to consolidate magnet ring special powder and preparation method thereof fastly, belongs to functional paint neck
Domain.
Background technique
Magnet ring, a kind of cricoid magnetizer are common anti-interference elements in electronic circuit, be widely used in electric power, electronics,
The fields such as data communications equipment require height to electrical insulation capability and high voltage withstanding breakdown, need to insulate to its external coating
Protection and mechanical protection.The coating process of magnet ring needs to complete in a very short period of time, high to coating appearance requirement, therefore,
The powdery paints of coating need it is low-temperature fast-curing in a short time, currently, the such powdery paints stability in domestic market it is poor,
Storage period is extremely short, summer high temperature transport difficult, and very big difficulty is brought to producer.For this purpose, it is good to develop a kind of stability,
It is very necessary that the low temperature of storage period length consolidates powder fastly.
Summary of the invention
The object of the present invention is to provide a kind of two-step method low temperature to consolidate magnet ring special powder fastly, outside, coating solid fastly with low temperature
See, halogen-free flameproof, high storage stability the advantages that, solve the problems, such as that the storage of producer summer is difficult from the root.Meanwhile
Solidification temperature is low, and the time is short, greatly reduces the energy consumption of magnet ring coating process；It is a further object of the present invention to provide a kind of two steps
Method low temperature consolidates the preparation method of magnet ring special powder fastly.
The unresolved above problem, The technical solution adopted by the invention is as follows:
It includes A material master batch and B material master batch that a kind of two-step method low temperature consolidates magnet ring special powder fastly, and raw material composition is respectively such as
Under:
A expects master batch
30-40 parts of modified epoxy
2-5 parts of curing agent
10-20 parts of fire retardant
0-5 parts of filler
1-5 parts of pigment
1-3 parts of levelling agent
B expects master batch
25-30 parts of modified epoxy
1-2 parts of curing accelerator
1-3 parts of defoaming agent
1-3 parts of antioxidant
1-3 parts of brightener.
Preferably, the modified epoxy is o-cresol formaldehyde modified epoxy, and epoxide equivalent is respectively 180-210g/
Eg, 720-850g/eg, A expect that the addition mass ratio in master batch is 7:1, and B expects that the addition mass ratio in master batch is 4:1.
Preferably, the curing agent selects promoted type dicy-curing agent.
Preferably, the fire retardant is the mixture of aluminium hydroxide and sepiolite micro mist, compound proportion 1:1.
Preferably, the filler selects superfine light calcium carbonate, 2000 mesh of mesh number or so.
Preferably, the pigment is high temperature resistant, anti-ultraviolet ageing, resistance to dynamo oil, the high-carbon black pigment of chemical-resistant resistance, titanium
White powder, permanent bordeaux, permanent yellow, phthalocyanine blue, phthalocyanine green.
Preferably, the curing accelerator is the derivative of 2- heptadecyl imidazole, and facilitation effect is fairly obvious, can be very big
The shortening curing time of degree.
Preferably, the defoaming agent selects styrax.
Preferably, the levelling agent is a kind of stearic amide, selects the W-1 of South Sea chemistry, can partially replace styrax,
And there is synergy with styrax collocation.
Preferably, the brightener is the copolymer of a kind of butyl acrylate and methyl methacrylate, to resin
There is good wetting effect with pigments and fillers, reduce melt viscosity, adjust surface tension, play the role of bright levelling.
Above-mentioned two-step method low temperature consolidates the preparation method of magnet ring special powder fastly, it is characterised in that: using be connected in order as
Lower step:
The preparation of A material
(1), the o-cresol formaldehyde modified epoxy 7:1 in mass ratio of two kinds of different epoxide equivalents is weighed into corresponding weight
Number is added in high-speed mixer, and promoted type dicy-curing agent weighs corresponding parts by weight and is added to high-speed mixer
In, 10min is stirred with 800~900r/min, is sufficiently mixed the two uniformly；
(2), by aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) and sepiolite micro mist (about 2 μm of partial size, city
Sell) in 1:1 ratio weigh corresponding number put into high-speed mixer with 800~900r/min stir 10min, be then added
Filler, pigment, levelling agent continue to stir 10min with 800~900r/min, are uniformly mixed it；
(3), the mixture of step (1) and step (2) is passed through into A, B feeding bin feeding respectively, twin-screw melting extrusion is melted
Melt 80-90 DEG C of section temperature, 100-120 DEG C of head extrusion temperature, melting extrusion mixture squeezes in flakes by chilling roller, air-cooled rear powder
Being broken into small fragment is A material master batch.
The preparation of B material
(4), the o-cresol formaldehyde modified epoxy 4:1 in mass ratio of two kinds of different epoxide equivalents is weighed into corresponding weight
Number is added in high-speed mixer, then weighs the derivative of the curing accelerator 2- heptadecyl imidazole of corrresponding quality number
It is added thereto, 10min is stirred with 800~900r/min, then sequentially adds the defoaming agent, antioxidant, light of corresponding parts by weight
Bright dose is continued to stir 10min with 800~900r/min, is uniformly mixed.
(5), the mixture of step (4) is passed through into twin-screw melting extrusion, 70-80 DEG C of melt zone temperature, head extrusion temperature
100-110 DEG C of degree, melting extrusion mixture squeeze in flakes by chilling roller, and it is B material master batch that small fragment is ground into after air-cooled.
(6), 90-95:5-10 in mass ratio weighs A material master batch and B material master batch, passes through A, B feeding bin feeding, double spiral shells respectively
Bar melting extrusion, 80-90 DEG C of melt zone temperature, 100-120 DEG C of head extrusion temperature；
(7), melting extrusion mixture squeezes in flakes by chilling roller, is ground into small fragment after cooling, is milled by air
Then pure Cheng Fenmo obtains 140 mesh powders by cyclone separator and sieve, finally remove impurity by magnetic separation, obtain into
Product powder.
Above-mentioned preparation method has the promotion of matter to the dispersibility of material, is prepared using two-step method, so that additive amount is seldom
Auxiliary agent also can be highly uniform dispersion in the material, give full play to the effect of auxiliary agent.
The unmentioned technology of the present invention is referring to the prior art.
Two-step method low temperature of the present invention consolidates magnet ring special powder fastly, solves in one-step method preparation process mixture in twin-screw
The phenomenon that middle precrosslink, finished powder are uniformly distributed due to each ingredient, and intermolecular interfacial effect, storage stability is not present
It is very good, it can keep 70 days mobility substantially unchanged in 35 DEG C of environment, thoroughly solve the difficulty of summer high temperature weather transport,
The use environment of magnet ring special powder is relaxed, in addition the powder coating effect is good, and performance is excellent, halogen-free flameproof, and market is very wide
It is general.
Specific embodiment
In order to further appreciate that the present invention, it is illustrated combined with specific embodiments below, but the content of embodiment does not have
It is limited.
Embodiment 1
It is as follows that two-step method low temperature consolidates its raw material of magnet ring special powder composition fastly:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 28
Part, 4 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing agent promotes
2 parts of type dicyandiamide P104 (resolution), 5 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) are micro- with sepiolite
5 parts of powder (about 2 μm of partial size, commercially available), 5 parts of superfine light calcium carbonate (Jiangxi is auspicious greatly), pigment (phthalocyanine green, permanent yellow, high pigment charcoal
Black, titanium dioxide is adjusted according to actual color and is matched) 2 parts, 1 part of levelling agent W-1 (South Sea chemistry).Number described above is parts by weight
Number.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 20
Part, 5 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing accelerator
1 part of PN-23J (aginomoto), 1 part of styrax, 1 part of antioxidant 445 (Chemtura), 1 part of brightener BLC701 (South Sea chemistry).With
The upper number is parts by weight.
A material: 90 parts, B expects 10 parts, and the number is parts by weight.
Above-mentioned two-step method low temperature consolidates the preparation method of magnet ring special powder fastly, including the following steps being connected in order:
(1), in mass ratio by two o-cresol formaldehyde modified epoxies 208 and o-cresol formaldehyde modified epoxy KD-213H
7:1 weighs corresponding parts by weight and is added in high-speed mixer, and promoted type dicy-curing agent weighs corresponding parts by weight
It is added in high-speed mixer, 10min is stirred with 800~900r/min, is sufficiently mixed the two uniformly；
(2), by aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) and sepiolite micro mist (about 2 μm of partial size, city
Sell) in 1:1 ratio weigh corresponding number put into high-speed mixer with 800~900r/min stir 10min, be then added
Superfine light calcium carbonate, pigment, W-1 continue to stir 10min with 800~900r/min, are uniformly mixed it；
(3), the mixture of step (1) and step (2) is passed through into A, B feeding bin feeding respectively, twin-screw melting extrusion is melted
Melt 80-90 DEG C of section temperature, 100-120 DEG C of head extrusion temperature, melting extrusion mixture squeezes in flakes by chilling roller, air-cooled rear powder
Being broken into small fragment is A material master batch.
(4), in mass ratio by two o-cresol formaldehyde modified epoxies 208 and o-cresol formaldehyde modified epoxy KD-213H
4:1 weighs corresponding parts by weight and is added in high-speed mixer, then weighs the curing accelerator PN- of corrresponding quality number
23J is added thereto, with 800~900r/min stir 10min, then sequentially add corresponding parts by weight styrax, 445,
BLC701 continues to stir 10min with 800~900r/min, is uniformly mixed.
(5), the mixture of step (4) is passed through into twin-screw melting extrusion, 70-80 DEG C of melt zone temperature, head extrusion temperature
100-110 DEG C of degree, melting extrusion mixture squeeze in flakes by chilling roller, and it is B material master batch that small fragment is ground into after air-cooled.
(6), 90-95:5-10 in mass ratio weighs A material master batch and B material master batch, passes through A, B feeding bin feeding, double spiral shells respectively
Bar melting extrusion, 80-90 DEG C of melt zone temperature, 100-120 DEG C of head extrusion temperature；
(7), melting extrusion mixture squeezes in flakes by chilling roller, is ground into small fragment after cooling, is milled by air
Then pure Cheng Fenmo obtains 140 mesh powders by cyclone separator and sieve, finally remove impurity by magnetic separation, obtain into
Product powder.After tested, indices are included in table 1.
Embodiment 2
The step of with embodiment 1, the difference is that the composition parts by weight of each raw material are as follows:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 35
Part, 5 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing agent promotes
5 parts of type dicyandiamide P104 (resolution), 10 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) and sepiolite
10 parts of micro mist (about 2 μm of partial size, commercially available), (phthalocyanine green, permanent yellow, high-carbon black pigment, titanium dioxide adjust pigment according to actual color
Proportion) 5 parts, 2 parts of levelling agent W-1 (South Sea chemistry).Number described above is parts by weight.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 24
Part, 6 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing accelerator
2 parts of PN-23J (aginomoto), 3 parts of styrax, 3 parts of antioxidant 445 (Chemtura), 3 parts of brightener BLC701 (South Sea chemistry).With
The upper number is parts by weight.
A material: 95 parts, B expects 5 parts, and the number is parts by weight.
Embodiment 3
The step of with embodiment 1, the difference is that the composition parts by weight of each raw material are as follows:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg)
26.25 parts, 3.75 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), Gu
3 parts of agent promoted type dicyandiamide P104 (resolution), 8 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) with
8 parts of sepiolite micro mist (about 2 μm of partial size, commercially available), 3 parts of superfine light calcium carbonate (Jiangxi is auspicious greatly), pigment (phthalocyanine green, permanent yellow,
High-carbon black pigment, titanium dioxide are adjusted according to actual color and are matched) 3 parts, 1 part of levelling agent W-1 (South Sea chemistry).Number described above
For parts by weight.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg)
22.4 parts, 5.6 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), solidification
2 parts of promotor PN-23J (aginomoto), 2 parts of styrax, 2 parts of antioxidant 445 (Chemtura), brightener BLC701 (South Sea chemistry)
2 parts.Number described above is parts by weight.
A material: 93 parts, B expects 7 parts, and the number is parts by weight.
Embodiment 4
The step of with embodiment 1, the difference is that the composition parts by weight of each raw material are as follows:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 28
Part, 4 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing agent promotes
4 parts of type dicyandiamide P104 (resolution), 7 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) are micro- with sepiolite
7 parts of powder (about 2 μm of partial size, commercially available), 5 parts of superfine light calcium carbonate (Jiangxi is auspicious greatly), pigment (phthalocyanine green, permanent yellow, high pigment charcoal
Black, titanium dioxide is adjusted according to actual color and is matched) 3 parts, 2 parts of levelling agent W-1 (South Sea chemistry).Number described above is parts by weight
Number.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 24
Part, 6 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing accelerator
2 parts of PN-23J (aginomoto), 2 parts of styrax, 2 parts of antioxidant 445 (Chemtura), 2 parts of brightener BLC701 (South Sea chemistry).With
The upper number is parts by weight.
A material: 94 parts, B expects 6 parts, and the number is parts by weight.
Embodiment 5
The step of with embodiment 1, the difference is that the composition parts by weight of each raw material are as follows:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg)
26.25 parts, 3.75 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), Gu
2 parts of agent promoted type dicyandiamide P104 (resolution), 10 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available)
With 10 parts of sepiolite micro mist (about 2 μm of partial size, commercially available), 5 parts of superfine light calcium carbonate (Jiangxi is auspicious greatly), pigment (consolidate forever by phthalocyanine green
Huang, high-carbon black pigment, titanium dioxide are adjusted according to actual color and are matched) 3 parts, 3 parts of levelling agent W-1 (South Sea chemistry).It is described above
Number is parts by weight.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 20
Part, 5 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing accelerator
1.5 parts of PN-23J (aginomoto), 1 part of styrax, 2 parts of antioxidant 445 (Chemtura), 2 parts of brightener BLC701 (South Sea chemistry).
Number described above is parts by weight.
A material: 95 parts, B expects 5 parts, and the number is parts by weight.
Embodiment 6
The step of with embodiment 1, the difference is that the composition parts by weight of each raw material are as follows:
A expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 35
Part, 5 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing agent promotes
4 parts of type dicyandiamide P104 (resolution), 10 parts of aluminium hydroxide (silane pre-treatment, 2~3 μm of partial size, commercially available) and sepiolite
10 parts of micro mist (about 2 μm of partial size, commercially available), 2 parts of superfine light calcium carbonate (Jiangxi is auspicious greatly), pigment (phthalocyanine green, permanent yellow, high color
Plain carbon black, titanium dioxide are adjusted according to actual color and are matched) 1 part, 2 parts of levelling agent W-1 (South Sea chemistry).Number described above is attached most importance to
Measure number.
B expects master batch composition are as follows: o-cresol formaldehyde modified epoxy 208 (middle petrochemical industry, epoxide equivalent 180-210g/eg) 24
Part, 6 parts of o-cresol formaldehyde modified epoxy KD-213H (national capital chemical industry, epoxide equivalent 720-850g/eg), curing accelerator
2 parts of PN-23J (aginomoto), 3 parts of styrax, 2 parts of antioxidant 445 (Chemtura), 3 parts of brightener BLC701 (South Sea chemistry).With
The upper number is parts by weight.
A material: 90 parts, B expects 10 parts, and the number is parts by weight.
Table 1
Claims (2)
1. a kind of two-step method low temperature consolidates magnet ring special powder fastly, it is characterised in that: its raw material composition is female comprising A material master batch and B material
Grain；
A material master batch is made of the raw material of following parts by weight:
30-40 parts of modified epoxy；
2-5 parts of curing agent；
10-20 parts of fire retardant；
0-5 parts of filler；
1-5 parts of pigment；
1-3 parts of levelling agent；
The modified epoxy is the o-cresol formaldehyde modified epoxy of two kinds of different epoxide equivalents, mass ratio 7:1；
The curing agent is dicy-curing agent, and dicyandiamide is promoted type dicyandiamide；
The fire retardant is the mixture of aluminium hydroxide and sepiolite micro mist, compound proportion 1:1；
The filler is superfine light calcium carbonate, 2000 mesh of mesh number；
The pigment is high temperature resistant, anti-ultraviolet ageing, resistance to dynamo oil, the high-carbon black pigment of chemical-resistant resistance, titanium dioxide, consolidates forever
Red, permanent yellow, phthalocyanine blue, phthalocyanine green；
The levelling agent is the homopolymer of butyl acrylate；
B material master batch is made of the raw material of following parts by weight:
25-30 parts of modified epoxy
1-2 parts of curing accelerator
1-3 parts of defoaming agent
1-3 parts of antioxidant
1-3 parts of brightener；
The modified epoxy is the o-cresol formaldehyde modified epoxy of two kinds of different epoxide equivalents, mass ratio 4:1；
The curing accelerator is the derivative of 2- heptadecyl imidazole；
The defoaming agent is styrax；
The antioxidant is secondary aryl amine kind antioxidant；
The copolymer of the brightener butyl acrylate and methyl methacrylate；
The A material is 90-95:5-10 with B material addition mass ratio.
2. a kind of two-step method low temperature consolidates magnet ring special powder fastly as described in claim 1 for preparation, which is characterized in that comprising such as
Under the step of being connected in order:
The preparation of A material
(1), the o-cresol formaldehyde modified epoxy 7:1 in mass ratio of two kinds of different epoxide equivalents is weighed into corresponding parts by weight
It being added in high-speed mixer, promoted type dicy-curing agent weighs corresponding parts by weight and is added in high-speed mixer, with
800 ~ 900r/min stirs 10min, is sufficiently mixed the two uniformly；
(2), by aluminium hydroxide and sepiolite micro mist in 1:1 ratio weigh corresponding number put into high-speed mixer with 800 ~
900r/min stirs 10min, and filler, pigment, levelling agent is then added and continues to stir 10min with 800 ~ 900r/min, keeps it mixed
It closes uniform；
(3), the mixture of step (1) and step (2) is passed through into A, B feeding bin feeding, twin-screw melting extrusion, melt zone respectively
80-90 DEG C of temperature, 100-120 DEG C of head extrusion temperature, melting extrusion mixture squeezes in flakes by chilling roller, is ground into after air-cooled
Small fragment is A material master batch；
The preparation of B material
(4), the o-cresol formaldehyde modified epoxy 4:1 in mass ratio of two kinds of different epoxide equivalents is weighed into corresponding parts by weight
It is added in high-speed mixer, the derivative for then weighing the curing accelerator 2- heptadecyl imidazole of corrresponding quality number is added
Wherein, 10min is stirred with 800 ~ 900r/min, then sequentially add the defoaming agent, antioxidant, brightener of corresponding parts by weight after
It is continuous that 10min is stirred with 800 ~ 900r/min, it is uniformly mixed;
(5), the mixture of step (4) is passed through into twin-screw melting extrusion, 70-80 DEG C of melt zone temperature, head extrusion temperature
100-110 DEG C, melting extrusion mixture squeezes in flakes by chilling roller, and it is B material master batch that small fragment is ground into after air-cooled；
(6), 90-95:5-10 in mass ratio weighs A material master batch and B material master batch, and respectively by A, B feeding bin feeding, twin-screw is molten
Melt extrusion, 80-90 DEG C of melt zone temperature, 100-120 DEG C of head extrusion temperature；
(7), melting extrusion mixture squeezes in flakes by chilling roller, is ground into small fragment after cooling, by air milling it is pure at
Then powder obtains 140 mesh powders by cyclone separator and sieve, finally remove impurity by magnetic separation, obtain finished powder
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110136923A (en) * | 2019-05-31 | 2019-08-16 | 咸阳辉煌电子磁性材料研究所 | A kind of amorphous nano-crystalline magnet ring of epoxy powder coating and preparation method thereof |
| CN110105847A (en) * | 2019-05-31 | 2019-08-09 | 咸阳辉煌电子磁性材料研究所 | A kind of epoxide powder coating and preparation method thereof |
| CN111234659A (en) * | 2020-01-16 | 2020-06-05 | 安徽真信涂料有限公司 | Electrical insulation powder coating for magnetic ring copper bar |
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| CN103059692B (en) * | 2013-01-23 | 2015-07-22 | 天津凯华绝缘材料股份有限公司 | Epoxy powder coating for coating magnet ring and preparation method of epoxy powder coating |
| CN104745048A (en) * | 2013-12-31 | 2015-07-01 | 天津市凯华绝缘材料有限公司 | Halogen-free flame retardant epoxy resin powder coating used for coating magnetic ring |
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Effective date of registration: 20180412 Address after: 213300 1 building, South Ring Road, industrial park, Shang Xing Town, Liyang, Jiangsu, 1 Applicant after: Jiangsu Jiangnan insulating powder Co., Ltd. Address before: 213371 1, South Ring Road, industrial park, Shang Xing Town, Liyang, Changzhou, Jiangsu, 1 Applicant before: Liyang Jiangnan insulation powder factory |
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