CN102408819A - Novel environment-friendly flat coiled material pre-painting powder coating and preparation method thereof - Google Patents
Novel environment-friendly flat coiled material pre-painting powder coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a novel environment-friendly flat coiled material pre-painting powder coating comprising the following components according to part by weight: 150-200 parts by weight of resin/curing agent composition, 0-10 parts by weight of conventional auxiliaries, 0-3 parts by weight of frictional auxiliary, 0-150 parts by weight of stuffing and 0-10 parts by weight of pigment. The invention also discloses the preparation method of the environment-friendly flat coiled material pre-painting powder coating. The powder coating provided in the invention is nontoxic and environment-friendly, good in abrasive resistance and high in electrification performance; the powder coating is capable of obviously improving the pre-painting efficiency of the flat coiled material; and the cured coating has the characteristics of excellent physical mechanical properties, chemical resistance and the like.
Description
Technical field
The present invention relates to a kind of powder coating, relate in particular to a kind of dull and stereotyped coiled material precoating powder coating of novel environment friendly, the invention still further relates to the preparation method of this powder coating simultaneously.
Background technology
Powder coating is a kind of generally acknowledged high efficiency, good film performance, ecological environment-friendly type, Eco-power 4E type coating products.No matter in the spraying of field of household appliances powder coating is to adopt vertical spraying abroad or at home usually, and technology is quite ripe, but household electrical appliance adopt the vertical application of powder coating to have following weakness: 1. coating efficiency is lower, and general application linear speed is 3～6m/min; 2. the powder curing temperature is 180～200 ℃, and grow 15～20mins set time, and energy consumption is big; 3. position, labyrinth, the pre-treatment of position, turning and the spraying effect after the rolling of filming after the application is poor, and the whole antiseptic power of filming is relatively poor, and salt-fog test is only to reach 500 hours.
And the dull and stereotyped spraying technology of coiled material is the spraying technology that rises last century, and coiled material precoating powder coating and coating process technology thereof are compared with conventional powder coating has following advantage:
1. coating efficiency is high: the application speed of powder coating on the metal sheet paint line generally is 25～100m/min.
2. application qualification rate of coiled material is high: the utilization ratio of powder coating that is used for coil painting can reach 99%, need not reclaim, and avoids producing defective products.
3. colour changing is easy: need not to reclaim powder, make the colour changing operation rapid, general colour changing only needs 3-5min.
4. thickness is all made easily: application thickness 30～50 μ m, the easy filmization of filming.
5. can not produce the hanger phenomenon, reduce a series of expenses that produce because of suspension member in the general coating process.
6. the coiled material writing board shape is regular, and curing oven is prone to miniaturized, and curing speed is fast, but save energy.
7. pre-treatment local improper of workpiece after the moulding avoided in the pre-treatment miniaturized of coiled material, and pre-treatment is even, and the treatment time is short, and efficient is high.
At present domestic coil painting powder coating mainly uses polyurethane powder or triglycidyl group chlorinated isocyanurates (TGIC) powder coating as solidifying agent, and polyurethane powder projects performance is more outstanding, but price comparison is expensive.TGIC type powder coating compare cheap economy some; But because the used starting material solidifying agent TGIC of production link itself has certain toxicity; It is irritated that long-term and skin exposure makes skin produce easily; Even carcinogenic, prohibited use the type powder coating in Europe, also big limitations is used in Japan; Secondly, the solidification value of TGIC system powder coating is had relatively high expectations, and generally more than 200 ℃, and set time is longer, generally 20min at least; Moreover, general employing combustion gas, fuel Heating or electrically heated during owing to powder coating solidification, energy consumption is higher, and carbon emission is higher.Reduce powder coating solidification value, shorten set time, will enhance productivity greatly, comprehensive cost, particularly save the energy that is consumed when application is solidified greatly; Reducing carbon emission greatly, for this reason, is to be the alternative TGIC of solidifying agent of representative with beta-hydroxy alkylamide (HAA) at present; This solidifying agent is nontoxic; Human body there is not the Health hazard worry, and environmental protection, have market outlook.At present, comparatively popular in Europe and North America, account for the market share more than 18%, China is just at the early-stage.
Beta-hydroxy alkylamide is a kind of polyol, and the Rhom and Hass by the U.S. succeeds in developing the earliest, and trade names are Primid XL-552, domesticly also develops similar solidifying agent T-105.Abbreviate the Primid system as in this curing system industry, just the HAA system.Compare with TGIC, the major advantage of HAA system has: (1) toxicity is very low, and the oral LD50 of mouse is greater than 10g/Kg, and its nonirritant, and skin is not had anaphylaxis, and importantly its no mutagenesis and teratogenesis does not destroy the eubiosis in addition; (2) with the package stability of HAA solidified polyester powder coating than good with TGIC; (3) leveling characteristics of coating and erosion-resisting characteristics geometric ratio TGIC's is good; (4) relatively TGIC is low for the cost of powder coating.
Summary of the invention
One of the object of the invention is to provide a kind of dull and stereotyped coiled material precoating powder coating of novel environment friendly; This powder coating has asepsis environment-protecting, wear resistance is good, charging property is high characteristics; Can significantly improve dull and stereotyped coiled material precoating dress efficient, the coating after the curing has characteristics such as excellent physical and mechanical performance, chemical resistance.
Two of the object of the invention is to provide the preparation method of the dull and stereotyped coiled material precoating powder coating of above-mentioned novel environment friendly.
First purpose of the present invention realizes through following technical measures: a kind of dull and stereotyped coiled material precoating powder coating of novel environment friendly comprises following components in weight portions:
The compsn of said resin and solidifying agent is the compsn of saturated carboxyl polyester resin and beta-hydroxy alkylamide (HAA).
In said saturated carboxyl polyester resin and the beta-hydroxy alkylamide compsn, the weight proportion between saturated carboxyl polyester resin and the beta-hydroxy alkylamide is 10: 1～90: 1.
The acid number of said saturated carboxyl polyester resin is at 25～35mgKOH/g, and softening temperature is 100～120 ℃, and second-order transition temperature is at 60～70 ℃.
As an embodiment of the invention, said saturated carboxyl polyester resin is prepared from the component of following weight part:
Terephthalic acid or m-phthalic acid are adopted in described acidolysis agent.
As an embodiment of the invention, the preparation technology of above-mentioned saturated carboxyl polyester resin may further comprise the steps:
1) in reaction kettle, add NSC 6366, TriMethylolPropane(TMP), 1,4 cyclohexane dimethanol and water, be heated to fusing;
2) add terephthalic acid, m-phthalic acid, hexanodioic acid and dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃; Reach 13～16mgKOH/g to acid number, vacuumize for the first time and carries out polycondensation, when acid number reaches 4～6mgKOH/g, 100～105 ℃, 200 ℃ melt viscosity 3000～3500mpa.s of softening temperature; Add the acidolysis agent and carry out acidolysis reaction; When acid number reaches 40～45mgKOH/g, vacuumize for the second time and proceed acidolysis reaction, to the acid number of reaction product be 25～35mgKOH/g; Hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.The acid number of this saturated carboxyl polyester resin is at 25～35mgKOH/g, and softening temperature is 100～120 ℃, and second-order transition temperature is at 60～70 ℃.
Said auxiliary agent adopts conventional auxiliary agent to get final product, and for example adopts one or more the mixture in flow agent, st-yrax, ventilating agent, glossing agent, the growth agent.
Quaternary ammonium salts and AS compounds that said friction auxiliary agent adopts the verivate with aliphatic acid to be the basis, like TB-1, SA2485, EDI etc.
Said filler is one or more the mixture in white titanium pigment, permanent white, silicon powder, lime carbonate, mica powder, the superfine aluminium power.
Said pigment adopts the weather resistant mineral dye, one or more like: chrome yellow, iron oxide red, iron oxide black, carbon black, titanium indigo plant, ultramarine, titanium green grass or young crops, titanium in green etc.
Two of the object of the invention is to realize through following technical measures, and a kind of preparation method of dull and stereotyped coiled material precoating powder coating of novel environment friendly may further comprise the steps:
(1) take by weighing resin/curing agent composition, auxiliary agent, filler, friction auxiliary agent and pigment according to the above ratio, place compounding jar, thorough mixing is also broken, obtains mixture;
(2) mixture is sent in the forcing machine and is extruded;
(3) material after extruding is packed after compressing tablet, cooling, pulverizing, screening and is got final product.
Each component mixing and broken time are 1～20 minute in the said step (1), and the preferred time is 1～15 minute, and the best time is 1～10 minute.
Extrusion temperature in the said step (2) is 80～120 ℃, and preferred 90～120 ℃, more preferably 90～110 ℃, said forcing machine is a twin screw extruder.
Extrudate in the said step (3) through kibbler pulverize and screening after diameter of particle be 1～200um, preferred 1～180um, more preferably 1～170um, diameter of particle is meant the equivalent grain size D50 of powder.
The coating process of the dull and stereotyped coiled material precoating powder coating of environmental protection provided by the invention is: be coated on the metal base with the frictional static method, solidification value is 250～270 ℃, and be 1～5 minute set time, adopts infrared being cured.
The present invention compared with prior art has following beneficial effect:
Use powder coating of the present invention, the coating after spraying is solidified has following characteristic properties:
Table 1:
| Test item | Inspecting standard or method | Detected result |
| Coating thickness | GB/T?13452.2 | 30～50μm |
| Gloss (60 ℃) | GB/T?9754 | 0～100 gloss unit (60 °) |
| Sticking power | GB/T?9286 | 0 grade |
| Pencil hardness | GB/T?6739 | ≥H |
| Shock resistance | GB/T?1732 | 50Kgcm is positive and negative to be passed through |
| The curved test of T | GB/T?13448 | 0T |
| Neutral salt spray test | GB/T?1771 | 1000 hours ,<=2mm, non-foaming, do not come off |
| Atmospheric exposure test | GB/T?1865 | 500 hours, protect light rate >;=60% |
From shown in the table 1, coating thickness is in 30～50 mu m ranges, and conventional powder coating thickness is 60～80um, and visible powder coating coating thickness of the present invention significantly reduces, and improves the spray area of powder unit mass; From gloss, powder coating glossiness of the present invention is high; And through adhesion test, coating does not have and peels off, and sticking power is good; The anti-cripping test property of powder coating of the present invention is good, meets the manufacturing procedure requirement behind the coiled material precoating dress, and the bending place does not have corrosion phenomenon after bending back 120 hours neutral salt spray tests.It is thus clear that; Powder coating tool asepsis environment-protecting provided by the invention, the characteristics that wear resistance is good, charging property is high; Can significantly improve dull and stereotyped coiled material precoating dress efficient; Coating after the curing has characteristics such as excellent physical and mechanical performance, chemical resistance, is that a kind of novel coiled material precoating dress of environmental protection is used powder coating.
Embodiment
The present invention will be described to enumerate a part of specific examples below, is necessary to be pointed out that at this following specific embodiment only is used for the present invention is described further, and do not represent the restriction to protection domain of the present invention.Some nonessential modifications that other people make according to the present invention and adjustment still belong to protection scope of the present invention.
Embodiment 1
It is the carboxyl polyester resin of 25mgKOH/g that present embodiment adopts resin to adopt acid number, and its preparation method is following:
1) in reaction kettle, add 12Kg NSC 6366,0.5kg TriMethylolPropane(TMP), 1kg1,4-cyclohexanedimethanol and 3kg water are heated to fusing;
2) add 26kg terephthalic acid, 10.5kg m-phthalic acid, 0.5kg hexanodioic acid and 0.1kg dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃, reaches 13mgKOH/g to acid number, vacuumizes for the first time and carries out polycondensation; When acid number reaches 4mgKOH/g, 100 ℃, 200 ℃ melt viscosity 3000mpa.s of softening temperature, add acidolysis agent 0.05kg, carry out acidolysis reaction; When acid number reaches 40mgKOH/g, vacuumize for the second time and carry out acidolysis reaction, to the acid number of reaction product be 25mgKOH/g; Hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.The acid number of this saturated carboxyl polyester resin is at 25mgKOH/g, and softening temperature is 101 ℃, and second-order transition temperature is at 62 ℃.The dull and stereotyped coiled material precoating powder coating of environmental protection, its component and weight part proportioning are:
The preparation method:
(a) take by weighing saturated carboxyl polyester resin, HAA solidifying agent, white titanium pigment, permanent white, esters of acrylic acid flow agent 588, st-yrax, ventilating agent 703, glossing agent 701, friction auxiliary agent in proportion, pigment places compounding jar, thorough mixing and broken 1～10 minute;
(b) entering of the material after fragmentation twin screw extruder is extruded; The forcing machine heating and temperature control is at 80～100 ℃;
(c) material after extruding is ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, kibbler and is the powder of 30um, and screening back packing promptly gets then.
Film performance after the product application that is obtained by the foregoing description is solidified is following:
| Condition of cure | Gloss | Impact | Outward appearance |
| 270℃/1min | 80 gloss unit | 50Kgcm, positive and negative passing through | Smooth smooth |
Embodiment 2
It is the carboxyl polyester resin of 30mgKOH/g that present embodiment adopts resin to adopt acid number, and its preparation method is following:
1) in reaction kettle, add 14kg NSC 6366,1.0kg TriMethylolPropane(TMP), 2.0kg1,4-cyclohexanedimethanol and 4.0 water are heated to fusing;
2) add 30kg terephthalic acid, 11kg m-phthalic acid, 1.0 hexanodioic acids and 0.5kg dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃, reaches 15mgKOH/g to acid number, vacuumizes for the first time and carries out polycondensation; When acid number reaches 5mgKOH/g, 103 ℃, 200 ℃ melt viscosity 3200mpa.s of softening temperature, add acidolysis agent 0.5kg and carry out acidolysis reaction, when acid number reaches 42mgKOH/g; Vacuumize for the second time acidolysis reaction; Acid number to reaction product is 30mgKOH/g, and hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.The acid number of this saturated carboxyl polyester resin is at 30mgKOH/g, and softening temperature is 110 ℃, and second-order transition temperature is at 65 ℃.
The dull and stereotyped coiled material precoating powder coating of environmental protection, its component and weight part proportioning are:
The preparation method:
(a) take by weighing saturated carboxyl polyester resin, HAA solidifying agent, white titanium pigment, permanent white, esters of acrylic acid flow agent 588, st-yrax, ventilating agent 703, glossing agent 701, friction auxiliary agent in proportion, pigment places compounding jar, thorough mixing and broken 5～14 minutes;
(b) entering of the material after fragmentation twin screw extruder is extruded; The forcing machine heating and temperature control is at 100～110 ℃;
(c) material after extruding is ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, kibbler and is the powder of 45um, and screening back packing promptly gets then.
Film performance after the product application that is obtained by the foregoing description is solidified is following:
| Condition of cure | Gloss | Impact | Outward appearance |
| 260℃/2min | 88 gloss unit | 50Kgcm, positive and negative passing through | Smooth smooth |
Embodiment 3
It is the carboxyl polyester resin of 30mgKOH/g that present embodiment adopts resin to adopt the acid number of embodiment two.
The dull and stereotyped coiled material precoating powder coating of environmental protection, its component and weight part proportioning are:
The preparation method:
(a) take by weighing saturated carboxyl polyester resin, HAA solidifying agent, white titanium pigment, permanent white, esters of acrylic acid flow agent 588, st-yrax, ventilating agent 703, glossing agent 701, friction auxiliary agent in proportion, pigment places compounding jar, thorough mixing and broken 10～15 minutes;
(b) entering of the material after fragmentation twin screw extruder is extruded; The forcing machine heating and temperature control is at 110～120 ℃;
(c) material after extruding is ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, kibbler and is the powder of 50um, and screening back packing promptly gets then.
Film performance after the product application that is obtained by the foregoing description is solidified is following:
| Condition of cure | Gloss | Impact | Outward appearance |
| 250℃/2.5min | 98 gloss unit | 50Kgcm, positive and negative passing through | Smooth smooth |
Embodiment 4
It is the carboxyl polyester resin of 32mgKOH/g that present embodiment adopts resin to adopt acid number, and its preparation method is following:
1) in reaction kettle, add 15kg NSC 6366,1.1kg TriMethylolPropane(TMP), 2.2kg1,4-cyclohexanedimethanol and 3.5kg water are heated to fusing;
2) add 31kg terephthalic acid, 11.1 m-phthalic acids, 1.2kg hexanodioic acid and 0.6kg dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃, reaches 14.5mgKOH/g to acid number, vacuumizes for the first time and carries out polycondensation; When acid number reaches 5.2mgKOH/g, 102 ℃, 200 ℃ melt viscosity 3350mpa.s of softening temperature, add acidolysis agent 0.55 and carry out acidolysis reaction, when acid number reaches 42.5mgKOH/g; Vacuumize for the second time and carry out acidolysis reaction; Acid number to reaction product is 32mgKOH/g, and hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.The acid number of this saturated carboxyl polyester resin is at 32mgKOH/g, and softening temperature is 110 ℃, and second-order transition temperature is at 66 ℃.
The dull and stereotyped coiled material precoating powder coating of environmental protection, its component and weight part proportioning are:
The preparation method:
(a) take by weighing saturated carboxyl polyester resin, HAA solidifying agent, white titanium pigment, permanent white, esters of acrylic acid flow agent 588, st-yrax, ventilating agent 703, glossing agent 701, friction auxiliary agent in proportion, pigment places compounding jar, thorough mixing and broken 10～15 minutes;
(b) entering of the material after fragmentation twin screw extruder is extruded; The forcing machine heating and temperature control is at 110～120 ℃;
(c) material after extruding is ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, kibbler and is the powder of 50um, and screening back packing promptly gets then.
Film performance after the product application that is obtained by the foregoing description is solidified is following:
| Condition of cure | Gloss | Impact | Outward appearance |
| 260℃/2min | 90 gloss unit | 50Kgcm, positive and negative passing through | Smooth smooth |
Embodiment 5
It is the carboxyl polyester resin of 35mgKOH/g that present embodiment adopts resin to adopt acid number, and its preparation method is following:
1) in reaction kettle, add 20kg NSC 6366,1.5kg TriMethylolPropane(TMP), 3kg1,4-cyclohexanedimethanol and 5kg water are heated to fusing;
2) add 32kg terephthalic acid, 12kg m-phthalic acid, 2.2kg hexanodioic acid and 1kg dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃, reaches 16mgKOH/g to acid number, vacuumizes for the first time and carries out polycondensation; When acid number reaches 6mgKOH/g, 105 ℃, 200 ℃ melt viscosity 3500mpa.s of softening temperature, add acidolysis agent 1kg and carry out acidolysis reaction, when acid number reaches 45mgKOH/g; Vacuumize for the second time and carry out acidolysis reaction; Acid number to reaction product is 35mgKOH/g, and hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.The acid number of this saturated carboxyl polyester resin is at 35mgKOH/g, and softening temperature is 120 ℃, and second-order transition temperature is at 70 ℃.
The dull and stereotyped coiled material precoating powder coating of environmental protection, its component and weight part proportioning are:
The preparation method:
(a) take by weighing saturated carboxyl polyester resin, HAA solidifying agent, white titanium pigment, permanent white, esters of acrylic acid flow agent 588, st-yrax, ventilating agent 703, glossing agent 701, friction auxiliary agent in proportion, pigment places compounding jar, thorough mixing and broken 10～15 minutes;
(b) entering of the material after fragmentation twin screw extruder is extruded; The forcing machine heating and temperature control is at 110～120 ℃;
(c) material after extruding is ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, kibbler and is the powder of 50um, and screening back packing promptly gets then.
Film performance after the product application that is obtained by the foregoing description is solidified is following:
| Condition of cure | Gloss | Impact | Outward appearance |
| 250℃/2min | 87 gloss unit | 50Kgcm, positive and negative passing through | Smooth smooth |
In the foregoing description 1 to 5, terephthalic acid is adopted in the acidolysis agent.Quaternary ammonium salts and AS compounds that the friction auxiliary agent adopts the verivate with aliphatic acid to be the basis, like TB-1, SA2485, EDI etc.The mixture of one or more in filler employing white titanium pigment, permanent white, silicon powder, lime carbonate, mica powder, the superfine aluminium power.Pigment adopts the weather resistant mineral dye, the mixture of one or more like: chrome yellow, iron oxide red, iron oxide black, carbon black, titanium indigo plant, ultramarine, titanium green grass or young crops, titanium in green etc.
Claims (10)
1. the dull and stereotyped coiled material precoating powder coating of a novel environment friendly is characterized in that, comprises following components in weight portions:
2. the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 1 is characterized in that the compsn of said resin and solidifying agent is the compsn of saturated carboxyl polyester resin and beta-hydroxy alkylamide.
3. the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 2; It is characterized in that; In said saturated carboxyl polyester resin and the beta-hydroxy alkylamide compsn, the weight proportion between saturated carboxyl polyester resin and the beta-hydroxy alkylamide is 10: 1～90: 1.
4. according to the dull and stereotyped coiled material precoating powder coating of claim 2 or 3 described novel environment friendlies, it is characterized in that the acid number of said saturated carboxyl polyester resin is at 25～35mgKOH/g, softening temperature is 100～120 ℃, and second-order transition temperature is at 60～70 ℃.
5. the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 4 is characterized in that said saturated carboxyl polyester resin is prepared from the component of following weight part:
6. the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 5 is characterized in that, terephthalic acid or m-phthalic acid are adopted in described acidolysis agent; Quaternary ammonium salts and AS compounds that said friction auxiliary agent adopts the verivate with aliphatic acid to be the basis; The mixture of one or more in said filler employing white titanium pigment, permanent white, silicon powder, lime carbonate, mica powder and the superfine aluminium power; Said pigment adopts the weather resistant mineral dye.
7. the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 6 is characterized in that the preparation technology of described saturated carboxyl polyester resin may further comprise the steps:
1) in reaction kettle, add NSC 6366, TriMethylolPropane(TMP), 1,4 cyclohexane dimethanol and water, be heated to fusing;
2) add terephthalic acid, m-phthalic acid, hexanodioic acid and dibutyl tin oxide successively, feed nitrogen and continue to be warming up to 130 ℃;
3) temperature is heated to 250 ℃ by 130 ℃; Reach 13～16mgKOH/g to acid number, vacuumize for the first time and carries out polycondensation, when acid number reaches 4～6mgKOH/g, 100～105 ℃, 200 ℃ melt viscosity 3000～3500mpa.s of softening temperature; Add the acidolysis agent and carry out acidolysis reaction; When acid number reaches 40～45mgKOH/g, vacuumize for the second time and proceed acidolysis reaction, to the acid number of reaction product be 25～35mgKOH/g; Hydroxyl value stopped reaction during less than 15mgKOH/g obtains saturated carboxyl polyester resin.
8. the preparation method of the dull and stereotyped coiled material precoating powder coating of the described novel environment friendly of the arbitrary claim of claim 1 to 7 is characterized in that it may further comprise the steps:
(1) take by weighing resin/curing agent composition, auxiliary agent, filler, friction auxiliary agent and pigment according to the above ratio, place compounding jar, thorough mixing is also broken, obtains mixture;
(2) mixture is sent in the forcing machine and is extruded;
(3) material after extruding is packed after compressing tablet, cooling, pulverizing, screening and is got final product.
9. the preparation method of the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 8 is characterized in that, each component mixing and broken time are 1～20 minute in the said step (1); Extrusion temperature in the said step (2) is 80～120 ℃; The diameter of particle of extrudate in the said step (3) after kibbler is pulverized and sieved is 1～200um.
10. the preparation method of the dull and stereotyped coiled material precoating powder coating of novel environment friendly according to claim 9 is characterized in that, each component mixing and broken time are 1～15 minute in the said step (1); Extrusion temperature in the said step (2) is 90～120 ℃; The diameter of particle of extrudate in the said step (3) after kibbler is pulverized and sieved is 1～180um.
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| CN103755931A (en) * | 2013-12-21 | 2014-04-30 | 安徽神剑新材料股份有限公司 | Preparation method of coiled material polyester resin and application of coiled material polyester resin in powder coating |
| CN105218795A (en) * | 2015-10-22 | 2016-01-06 | 广州擎天材料科技有限公司 | A kind of HAA solidifies coiled material pure polyester resin used for powder coating and preparation method thereof |
| CN105885648A (en) * | 2016-05-09 | 2016-08-24 | 杨培 | Self-cleaning high-dispersivity powder paint for coiled material and preparation method thereof |
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| CN107090237A (en) * | 2017-06-22 | 2017-08-25 | 李水金 | A kind of Weather-resisting powder coating |
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| CN110128640A (en) * | 2019-05-15 | 2019-08-16 | 江苏达美瑞新材料有限公司 | A kind of HAA solidifies indoor polyester resin for powder coating and preparation method thereof, the powdery paints containing the polyester resin |
| CN110193699A (en) * | 2019-05-24 | 2019-09-03 | 安徽裕佳铝塑科技有限公司 | A kind of lipstick tube processing moulding process of aluminium |
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| CN105218795A (en) * | 2015-10-22 | 2016-01-06 | 广州擎天材料科技有限公司 | A kind of HAA solidifies coiled material pure polyester resin used for powder coating and preparation method thereof |
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| CN110128640A (en) * | 2019-05-15 | 2019-08-16 | 江苏达美瑞新材料有限公司 | A kind of HAA solidifies indoor polyester resin for powder coating and preparation method thereof, the powdery paints containing the polyester resin |
| CN110193699A (en) * | 2019-05-24 | 2019-09-03 | 安徽裕佳铝塑科技有限公司 | A kind of lipstick tube processing moulding process of aluminium |
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Application publication date: 20120411 |