CN107459926B - A kind of automobile exhaust pipe and muffler powdery paints and preparation method thereof - Google Patents
A kind of automobile exhaust pipe and muffler powdery paints and preparation method thereof Download PDFInfo
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- CN107459926B CN107459926B CN201710848849.8A CN201710848849A CN107459926B CN 107459926 B CN107459926 B CN 107459926B CN 201710848849 A CN201710848849 A CN 201710848849A CN 107459926 B CN107459926 B CN 107459926B
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- C—CHEMISTRY; METALLURGY
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- 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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Abstract
The present invention discloses a kind of automobile exhaust pipe and muffler powdery paints and preparation method thereof, and the material used includes 50-60 parts of methyl phenyl silicone resin, 20-30 parts of lead-free low-temperature melten glass powder, 15-20 parts of polyimide powder, 3-5 parts of levelling agent, 2-3 parts of Silane coupling agent KH550,1-2 parts of titanate coupling agent, 15-20 parts of inorganic ceramic pigment, 1 part of styrax, 0.8 part of white carbon black according to the mass fraction.Powdery paints color obtained is uniformly beautiful, has preferable decorative effect, and high temperature resistance is good, is able to satisfy the use of automobile exhaust pipe and the coating of muffler surface.
Description
Technical field
The invention belongs to powder coating technology field, specifically a kind of automobile exhaust pipe and muffler powdery paints and its system
Preparation Method.
Background technique
Automobile exhaust pipe and muffler are for discharging the exhaust gas generated after automotive engine combustion chamber fuel combustion, automobile
Burning room temperature reaches as high as 2000 DEG C, and the exhaust gas temperature of discharge is higher, and exhaust gas can make to be vented by exhaust pipe and muffler
Pipe and muffler surface temperature reach 300-400 DEG C, under high load capacity operating condition, up to 500-600 DEG C, to automobile exhaust pipe and disappear
The coating high temperature resistance on sound device surface is more demanding.
Powdery paints is that one kind is novel, is free of solvent, easily operated, the environmental protection coating material of 100% solid powdery, powder
Coating utilization efficiency is high, is widely used in the industries such as household electrical appliances, automobile, building, petroleum and petrochemical industry；Traditional Heat Resistant Powder Coatings are more
For black sand streak coating, surface tactile sensation and coating decorative performance are poor；Traditional Heat Resistant Powder Coatings granular size gap compared with
Greatly, coating is uneven when coating, and often Bulk coat thickness is thicker.
Summary of the invention
Goal of the invention: the purpose of the present invention is for the deficiency in current technology, provide a kind of automobile exhaust pipe and noise reduction
Device powdery paints and preparation method thereof, powdery paints color obtained is beautiful, and decorative performance is good, and powder coating particles are uniform, applies
It is controllable relatively thin to cover smooth and thickness.
Technical solution: to achieve the above object, the present invention provide a kind of automobile exhaust pipe and muffler powdery paints and its
Preparation method, the specific steps of which are as follows:
A, raw material are weighed, and prepare following raw material according to the mass fraction:
50-60 parts of methyl phenyl silicone resin；
20-30 parts of lead-free low-temperature melten glass powder；
15-20 parts of polyimide powder；
3-5 parts of levelling agent；
2-3 parts of Silane coupling agent KH550；
1-2 parts of titanate coupling agent；
15-20 parts of inorganic ceramic pigment；
1 part of styrax；
0.8 part of white carbon black；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupled
Agent KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Close the time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting
Temperature is 150-170 DEG C, and extruder head temperature is 180-185 DEG C, material lagging time 45-50s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain
Mixture；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, sieving qualified powder is original washing powder, is not conformed to
The Powder Recovery of lattice is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer rice
It is mixed in plug carat cylinder, incorporation time 60-90s, revolving speed 280r/min discharge after mixing, obtain automobile exhaust
Pipe and muffler powdery paints finished product carry out finished product packing.
Preferably, lead-free low-temperature melten glass powder described in step a is 300 mesh；
Preferably, polyimide powder described in step a is 300 mesh；
Preferably, extruder machine cavity melting workshop section's technique is specific as follows in step c:
Leading portion I area's temperature is 150-160 DEG C；
Back segment II area's temperature is 160-170 DEG C；
Screw speed 55-60r/min.
Two-stage screening machine described in step f, including body, level-one vibrating screen panel, second level vibrating screen panel, feed inlet, go out
Material mouth, recovery channel, reclaiming chamber and feed belt device, the body are the cabinet of upper and lower opening, and top is feed inlet, lower section
For reclaiming chamber；Reclaiming chamber is back taper, and top is equipped with recovery port, and it is feed belt device below reclaiming chamber that lower part, which is equipped with outlet,；
The level-one vibrating screen panel is 250-270 mesh, and second level vibrating screen panel is 320-350 mesh, level-one vibrating screen panel and second level reciprocating sieve
Net is arranged at body, and two screen slopes are placed, and recovery channel is arranged on the contrary, shaking mesh screen low side in level-one in inclined direction,
In second level vibration mesh screen low side, discharge port is set.
Preferably, the level-one vibrating screen panel is 260 mesh；
Preferably, the second level vibrating screen panel is 330 mesh.
The utility model has the advantages that a kind of automobile exhaust pipe of the present invention and muffler powdery paints use aminomethyl phenyl silicon tree
Rouge, lead-free low-melting melt glass powder and polyimides as main component, and methyl phenyl silicone resin itself has preferable high temperature resistant
Property, it can work under 220 DEG C of environment, when temperature is further increased up to 300-400 DEG C, lead-free low-melting melts glass powder and enters glass
Glass state to molten state, coating carries out secondary film-forming, guarantees that coating does not destroy and have good performance, when temperature reaches 500-600
DEG C when, polyimides enters molten state, and coating is formed a film three times, guarantee coating still have at 500-600 DEG C it is good
Performance.
Silane coupling agent KH550 can improve the wettability and dispersibility of inorganic filler in the polymer, in the powder
In last coating, inorganic ceramic pigment is can be improved in the addition of Silane coupling agent KH550 and lead-free low-melting melts glass powder in resin
Dispersibility, the obtained powdery paints for being color in coating is more uniform, and Silane coupling agent KH550 can be used as it is a kind of excellent
Adhesion strength of the powdery paints coated in automobile exhaust pipe and muffler surface when can be improved in different adhesive accelerant.
Titanate coupling agent equally has the function of that raising inorganic filler is dispersed in the polymer, can make the powder
Coating color is more bright-coloured beautiful after coating coating, while strength of coating can be improved in titanate coupling agent, promotes paint solidification,
Lower baking temperature and shortens baking time.
The preparation method of the automobile exhaust pipe and muffler powdery paints has used two-stage screening when preparing original washing powder
Machine, obtained original washing powder coating particles are uniform, and last automobile exhaust pipe obtained and muffler powder coating particles otherness are small, apply
Cover that quality is higher, and high temperature is secondary, characteristic that form a film again since the powdery paints has, coating thickness it is controllable compared with
It is thin.
In the mixed process of step g, white carbon black is added to as powder modifying agent, can improve the mobility of dusty material
Ability is put with band, the powder utilization of dusty material is improved, greatly promotes coating effect.
Inorganic ceramic pigment true qualities are bright-colored and powder particle is tiny, pole high temperature resistant, are mixed and apply in the powder
In material, cooperation lead-free low-melting melts the characteristic of the tiny good dispersion of glass powder particles and the use of levelling agent, can make powdery paints
Color is beautiful uniformly after coating film forming, and surface is smooth, there is glaze texture, and decorative effect is fabulous, is very suitable for arranging for automobile
The coating of the surface of tracheae and muffler.
A kind of described automobile exhaust pipe and muffler powdery paints and preparation method thereof provide one kind in hot environment
In can the secondary, powdery paints that forms a film again, there is excellent high temperature resistance, and color is beautiful after coating, decorative effect pole
It is good, it is very suitable for coating for the surface of automobile exhaust pipe and muffler, while a kind of two-stage having been used to sieve during the preparation process
Extension set, the powder coating particles made are uniform, and difference is small, can effectively improve the coating quality of powdery paints, and the two-stage
Screening machine will sieve underproof Powder Recovery and be sent into extruder melting extrusion again, reduce the waste of material.The automobile
Coating thickness is thinner while guaranteeing high temperature resistance when exhaust pipe and muffler powdery paints coat, and saves material, reduces
Cost.
Detailed description of the invention
The preparation method flow chart of Fig. 1, the automobile exhaust pipe and muffler powdery paints；
Fig. 2, the two-stage screening machine structural schematic diagram；
Reference signs list: 1, body, 2, level-one vibrating screen panel, 3, second level vibrating screen panel, 4, feed inlet, 5, discharge port,
6, recovery channel, 7, reclaiming chamber, 8, feed belt device, 9, extruder, 91, extruder barrel.
Specific embodiment
Below with specific embodiment, the present invention is furture elucidated, it should be understood that following specific embodiments are merely to illustrate
The present invention rather than limit the scope of the invention.
The two-stage screening machine is specifically described in conjunction with attached drawing first:
As shown in Figure 2, a kind of two-stage screening machine, including body 1, level-one vibrating screen panel 2, second level vibrating screen panel 3, feed inlet
4, discharge port 5, recovery channel 6, reclaiming chamber 7 and feed belt device 8, the body 1 be upper and lower opening cabinet, top be into
Material mouth 4, lower section are reclaiming chamber 7；Reclaiming chamber 7 is back taper, and top is equipped with recovery port, and lower part is equipped with outlet, is below reclaiming chamber 7
Feed belt device 8；The level-one vibrating screen panel 2 is 250-270 mesh, and second level vibrating screen panel 3 is 320-350 mesh, level-one vibration
Sieve 2 and second level vibrating screen panel 3 are arranged in body 1, and two screen slopes are placed, and inclined direction in level-one on the contrary, shake
Recovery channel 6 is arranged in 2 low side of sieve, and recovery channel 6 exports in reclaiming chamber 7, and discharge port is arranged in 3 low side of second level vibrating screen panel
5。
When the two-stage screening machine works, the powder after Crushing of Ultrafine is poured into from feed inlet 4, powder is sieved by primary vibration
The screening of net 2 is not unqualified powder by the powder of level-one vibrating screen panel 2, falls into recovery tube from 2 low side of level-one vibrating screen panel
Road 6 enters reclaiming chamber 7 by recovery channel 6, and it is enterprising to fall on second level vibrating screen panel 3 by the powder that level-one vibrating screen panel 2 screens
The screening of row second level is unqualified powder by the powder of second level vibrating screen panel 3, falls into reclaiming chamber 7, do not pass through second level vibrating screen panel
3 powder is final qualified powder, enters discharge hole for discharge from 3 low side of second level vibrating screen panel.Unqualified powder in reclaiming chamber 7
It falls on feed belt device 8, is realized by the transmission of feed belt device 8 into the extruder barrel 91 on extruder 9
The recycling of unqualified powder.
The preparation method of the automobile exhaust pipe and muffler powdery paints is furtherd elucidate below by three embodiments:
Embodiment 1
A kind of automobile exhaust pipe and muffler powdery paints are produced, the specific steps of which are as follows:
A, raw material are weighed, and prepare following raw material according to the mass fraction:
Methyl phenyl silicone resin 50kg；
Lead-free low-temperature melten glass powder (300 mesh) 20kg；
Polyimide powder (300 mesh) 15kg；
Levelling agent 3kg；
Silane coupling agent KH550 2kg；
Titanate coupling agent 1kg；
Inorganic ceramic pigment 15kg；
Styrax 1kg；
White carbon black 0.8kg；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupled
Agent KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Close the time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting
The workshop section's area leading portion I temperature is 150 DEG C, and back segment II area's temperature is 160 DEG C, and extruder head temperature is 180 DEG C, screw speed 55r/min,
Material lagging time 50s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain
Mixture；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, level-one vibrating screen panel is 250 mesh, second level
Vibrating screen panel is 320 mesh, and sieving qualified powder is original washing powder, and underproof Powder Recovery is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer rice
Plug carat cylinder in mixed, incorporation time 60s, revolving speed 280r/min discharge after mixing, obtain automobile exhaust pipe and
Muffler powdery paints finished product carries out finished product packing.
Embodiment 2
A kind of automobile exhaust pipe and muffler powdery paints are produced, the specific steps of which are as follows:
A, raw material are weighed, and prepare following raw material according to the mass fraction:
Methyl phenyl silicone resin 55.3kg；
Lead-free low-temperature melten glass powder (300) 22.6kg；
Polyimide powder (300) 17.8kg；
Levelling agent 4kg；
Silane coupling agent KH550 2.6kg；
Titanate coupling agent 1.5kg；
Inorganic ceramic pigment 18.4kg；
Styrax 1kg；
White carbon black 0.8kg；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupled
Agent KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Close the time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting
The workshop section's area leading portion I temperature is 155 DEG C, and back segment II area's temperature is 165 DEG C, and extruder head temperature is 182 DEG C, screw speed 58r/min,
Material lagging time 47s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain
Mixture；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, level-one vibrating screen panel is 260 mesh, second level
Vibrating screen panel is 330 mesh, and sieving qualified powder is original washing powder, and underproof Powder Recovery is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer rice
Plug carat cylinder in mixed, incorporation time 75s, revolving speed 280r/min discharge after mixing, obtain automobile exhaust pipe and
Muffler powdery paints finished product carries out finished product packing.
Embodiment 3
A kind of automobile exhaust pipe and muffler powdery paints are produced, the specific steps of which are as follows:
A, raw material are weighed, and prepare following raw material according to the mass fraction:
Methyl phenyl silicone resin 60kg；
Lead-free low-temperature melten glass powder (300 mesh) 30kg；
Polyimide powder (300 mesh) 20kg；
Levelling agent 5kg；
Silane coupling agent KH550 3kg；
Titanate coupling agent 2kg；
Inorganic ceramic pigment 20kg；
Styrax 1kg；
White carbon black 0.8kg；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupled
Agent KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Close the time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting
The workshop section's area leading portion I temperature is 160 DEG C, and back segment II area's temperature is 170 DEG C, and extruder head temperature is 185 DEG C, screw speed 60r/min,
Material lagging time 45s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain
Mixture；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, level-one vibrating screen panel is 270 mesh, second level
Vibrating screen panel is 350 mesh, and sieving qualified powder is original washing powder, and underproof Powder Recovery is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer rice
Plug carat cylinder in mixed, incorporation time 90s, revolving speed 280r/min discharge after mixing, obtain automobile exhaust pipe and
Muffler powdery paints finished product carries out finished product packing.
Powdery paints obtained by three embodiments is tested, institute's value is as shown in the table:
By above-mentioned test result it is found that though three embodiment chinese raw materials component ratios are slightly different, powder obtained
Coating various aspects of performance is up to state standards, and powdery paints obtained has preferable heat-resisting quantity in three embodiments,
It is able to satisfy the use of automobile exhaust pipe and muffler surface covering.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.
Claims (8)
1. a kind of automobile exhaust pipe and muffler powdery paints, which is characterized in that include following components according to the mass fraction:
50-60 parts of methyl phenyl silicone resin；
20-30 parts of lead-free low-temperature melten glass powder；
15-20 parts of polyimide powder；
3-5 parts of levelling agent；
2-3 parts of Silane coupling agent KH550；
1-2 parts of titanate coupling agent；
15-20 parts of inorganic ceramic pigment；
1 part of styrax；
0.8 part of white carbon black,
The powdery paints is through the following steps that obtained:
A, raw material are weighed: preparing raw material by above-mentioned each component mass fraction；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupling agent
KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting temperature
It is 150-170 DEG C, extruder head temperature is 180-185 DEG C, material lagging time 45-50s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain mixing
Object；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, sieving qualified powder is original washing powder, underproof
Powder Recovery is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer meter Sai Ke
Mixed in scuffing of cylinder bore, incorporation time 60-90s, revolving speed 280r/min discharges after mixing, obtain automobile exhaust pipe and
Muffler powdery paints finished product carries out finished product packing.
2. automobile exhaust pipe according to claim 1 and muffler powdery paints, which is characterized in that comprising pressing mass fraction
The following components of meter:
55.3 parts of methyl phenyl silicone resin；
22.6 parts of lead-free low-temperature melten glass powder；
17.8 parts of polyimide powder；
4 parts of levelling agent；
2.6 parts of Silane coupling agent KH550；
1.5 parts of titanate coupling agent；
18.4 parts of inorganic ceramic pigment；
1 part of styrax；
0.8 part of white carbon black.
3. automobile exhaust pipe according to claim 1 or 2 and muffler powdery paints, it is characterised in that: lead-free low-temperature is molten
Melting glass powder is 300 mesh.
4. automobile exhaust pipe according to claim 1 or 2 and muffler powdery paints, it is characterised in that: polyimide powder
End is 300 mesh.
5. a kind of preparation method for preparing automobile exhaust pipe and muffler powdery paints described in claim 1, which is characterized in that
The powdery paints is through the following steps that obtained:
A, raw material are weighed: preparing raw material by each component mass fraction；
B, by methyl phenyl silicone resin ready in step a, lead-free low-temperature melten glass powder, levelling agent, silane coupling agent
KH550, titanate coupling agent, inorganic ceramic pigment and styrax are added in mixer rice plug carat cylinder, are pre-mixed, and mix
Time are as follows: low speed 2 minutes, high speed 6 minutes；Low rotation speed is 100r/min, and high speed revolving speed is 280r/min；
C, the mixing material being uniformly mixed in step b is put into double screw extruder and carries out extruding extrusion, machine cavity melting temperature
It is 150-170 DEG C, extruder head temperature is 180-185 DEG C, material lagging time 45-50s；
D, the mixture for squeezing out extruder in step c is sent into tablet press machine and carries out tabletting, cooling and be crushed, and obtains bulky grain mixing
Object；
E, bulky grain mixture in step d is sent into progress Crushing of Ultrafine in pulverizer and obtains powder；
F, the feeding two-stage screening machine of powder obtained in step e is sieved, sieving qualified powder is original washing powder, underproof
Powder Recovery is sent into extruder；
G, the polyimide powder and white carbon black that prepare in original washing powder obtained in step f and step a are put into mixer meter Sai Ke
Mixed in scuffing of cylinder bore, incorporation time 60-90s, revolving speed 280r/min discharges after mixing, obtain automobile exhaust pipe and
Muffler powdery paints finished product carries out finished product packing.
6. the preparation method of automobile exhaust pipe according to claim 5 and muffler powdery paints, it is characterised in that: squeeze out
It is specific as follows that machine machine cavity melts workshop section's technique:
Leading portion I area's temperature is 150-160 DEG C；
Back segment II area's temperature is 160-170 DEG C；
Screw speed 55-60r/min.
7. the preparation method of automobile exhaust pipe according to claim 5 and muffler powdery paints, it is characterised in that: described
Two-stage screening machine include body, level-one vibrating screen panel, second level vibrating screen panel, feed inlet, discharge port, recovery channel, reclaiming chamber and
Feed belt device, the body are the cabinet of upper and lower opening, and top is feed inlet, and lower section is reclaiming chamber；Reclaiming chamber is back taper
Shape, top are equipped with recovery port, and it is feed belt device below reclaiming chamber that lower part, which is equipped with outlet,；The level-one vibrating screen panel is
250-270 mesh, second level vibrating screen panel are 320-350 mesh, and level-one vibrating screen panel and second level vibrating screen panel are arranged at body, two sieves
Net slant setting, and inclined direction is set on the contrary, in level-one vibration mesh screen low side setting recovery channel in second level vibration mesh screen low side
Set discharge port.
8. the preparation method of automobile exhaust pipe according to claim 7 and muffler powdery paints, it is characterised in that: described
Two-stage screening machine, level-one vibrating screen panel are 260 mesh, and second level vibrating screen panel is 330 mesh.
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| CN108912977A (en) * | 2018-07-06 | 2018-11-30 | 南京锐迈涂料科技有限公司 | A kind of preparation method of rapid-curing cutback environmental protection coating material |
| CN115044283A (en) * | 2022-07-29 | 2022-09-13 | 东莞市美宸纳米材料有限公司 | Super-durable polyester powder coating composition |
| CN115260901A (en) * | 2022-08-29 | 2022-11-01 | 德汇新材料科技南通有限公司 | Special high-temperature-resistant powder coating for automobile exhaust pipe and preparation process thereof |
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| CN202555495U (en) * | 2012-05-09 | 2012-11-28 | 丹阳市美尔鑫化工有限公司 | Environment-friendly screening and classification device for production of aluminum paste |
| CN103614071A (en) * | 2013-10-29 | 2014-03-05 | 中国船舶重工集团公司第七二五研究所 | 800DEG C resistant organosilicon anticorrosion coating for outer wall of pipeline, and preparation method thereof |
| CN105504823A (en) * | 2016-01-28 | 2016-04-20 | 天津凯华绝缘材料股份有限公司 | High-temperature-resistant organosilicone powder encapsulating material and preparation method thereof |
| CN106752759A (en) * | 2016-11-22 | 2017-05-31 | 天长市金陵电子有限责任公司 | A kind of electrostatic spraying special low temperature cured powder paint and preparation method thereof |
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