CN106916519B - Low temperature antistatic powder coating and preparation method thereof for automobile refuelling pipe - Google Patents
Low temperature antistatic powder coating and preparation method thereof for automobile refuelling pipe Download PDFInfo
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- CN106916519B CN106916519B CN201710124993.7A CN201710124993A CN106916519B CN 106916519 B CN106916519 B CN 106916519B CN 201710124993 A CN201710124993 A CN 201710124993A CN 106916519 B CN106916519 B CN 106916519B
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
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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
- 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
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The present invention discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, and the raw material including following mass fraction is made: 35 ~ 75 parts of bi-component polyesters, 3 ~ 7 parts of curing agent, 0.2 ~ 0.5 part of catalyst, 5 ~ 15 parts of conductive metal powders, 0.3 ~ 0.5 part of defoaming agent, 15 ~ 20 parts of barium sulfate, 5 ~ 15 parts of ceramic clays, 1 ~ 2 part of levelling agent；Wherein, bi-component polyester includes 15 ~ 35 parts of polyester A, 20 ~ 40 parts of polyester B；The polyester B is the modified saturated polyester resin of acrylic monomers, and acid value is in 30 ~ 37mgKOH/g, viscosity at 3000 ~ 6000mPa.s/200 DEG C.Method invention additionally discloses preparation for the low temperature antistatic powder coating of automobile refuelling pipe.The present invention low, environmentally protective, low resistance, the technical effect for avoiding the electrostatic spark between oil filling pipe and refueling nozzle from generating with solidification temperature.
Description
Technical field
The present invention relates to technical field of chemical paint, more particularly, to the low temperature antistatic powder coating of automobile refuelling pipe
And preparation method thereof.
Background technique
Existing auto parts and components such as oiling pipe internal surface overbrushing is covered with dope layer, is protected.Traditional automobile fuel filler
Pipe coating mainly includes stone-impact-proof paint and two kinds of powdery paints.Wherein, stone-impact-proof paint VOC content is high, is not able to satisfy ring
Guaranteed request；The principal resinous ingredients of powdery paints include polyester resin；Its solidification temperature of prior art polyester is higher, it usually needs
180 DEG C, it is not easy curing molding；In addition, the resistance of coating is larger, it is higher than 1 × 1010Ohm, when oiling, oil filling pipe and refueling nozzle it
Between can generate electrostatic spark, cause safety coefficient low.
Summary of the invention
Low, environmentally protective, low resistance that in view of the deficiencies of the prior art, the present invention provides a kind of solidification temperatures, avoids refueling
The low temperature antistatic powder coating and preparation method thereof for automobile refuelling pipe that electrostatic spark between pipe and refueling nozzle generates.
The present invention is realized by following technological means solves a kind of above-mentioned technical problem: low temperature for automobile refuelling pipe
Antistatic powder coating, the raw material including following mass fraction are made: 35~75 parts of bi-component polyesters, 3~7 parts of curing agent, 0.2
~0.5 part of catalyst, 5~15 parts of conductive metal powders, 0.3~0.5 part of defoaming agent, 15~20 parts of barium sulfate, 5~15 parts of ceramics
Soil, 1~2 part of levelling agent；
Wherein, bi-component polyester includes 15~35 parts of polyester A, 20~40 parts of polyester B；The polyester B is acrylic monomers
Modified saturated polyester resin.
Preferably, the conductive metal powder is aluminium powder, one kind of nickel powder or stainless steel powder.
Preferably, its partial size of the conductive metal powder is 30~35 μm.
Preferably, the coating further includes one of antioxidant, raising agent or two kinds.
Preferably, the antioxidant is four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters or three
The one of (2,4- di-tert-butyl-phenyl) phosphite ester or β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester
Kind；The raising agent is fumed silica.
A kind of saturated polyester resin that acrylic monomers is modified, the raw material including following mass fraction are made: 20~25 parts
Neopentyl glycol, 5~10 parts of ethylene glycol, 40~50 parts of terephthalic acid (TPA), 10~15 parts of M-phthalic acid, 0.01~5
Part trimellitic anhydride, 3~5 parts of glycidyl methacrylate, 0.01~2 part of tin catalyst, 0.01~2 part urge
Agent.
A method of preparing the modified saturated polyester resin of above-mentioned acrylic monomers, comprising the following steps:
Step 1: in a nitrogen environment, neopentyl glycol, ethylene glycol, terephthalic acid (TPA), M-phthalic acid and tin class is added and urges
Agent is heated to 120 DEG C and starts to stir；
Step 2: being warming up to 225 DEG C of heat preservations, keeps the temperature 18~21 hours, is cooled to 200 DEG C, biasing benzenetricarboxylic anhydride is further continued for
It is warming up to 225 DEG C；
Step 3: heat preservation 3~3.5 hours vacuumizes dehydration to acid value 35mgKOH/g, is cooled to 170 DEG C, addition is urged
Simultaneously glycidyl methacrylate is added dropwise in agent, keeps the temperature 1 hour and discharges.
It is a kind of to prepare the above-mentioned low temperature antistatic powder coating for automobile refuelling pipe, comprising the following steps:
Step 1: each raw material is mixed, and successively carries out two-stage agitation；First segment stirs under 90rpm stirring rate
180s；Second segment stirs 180s under 200rpm rate；Two-stage agitation prevents layering, after primary stirring, allows above and below material
Layer freely mixes, can more substantially low mixing.
Step 2: it is granulated；Extruder includes three temperature ranges；The temperature of first temperature range is 20 DEG C, second temperature
The temperature in section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Since this system reacts quickly, once temperature of charge mistake
Height will lead to antedating response, reduces the performance of coating, therefore uses segmentally heating.
Step 3: grinding, filtering obtain product.
Preferably, the material after granulation is ground by air classification mill in the step 3, wherein main mill
4000rpm, secondary mill 2800rpm；Powder is obtained using 220 meshes.
Preferably, the extruder uses draw ratio for the double screw extruder of 11:1.
The present invention has the advantages that
First, coating of the invention uses double component polyester material, wherein polyester B passes through glycidyl methacrylate pair
Saturated polyester is modified, and is introduced active double bond structure, is enhanced reactivity.Its solidification temperature is at 120 DEG C or so, relatively
The prior art reduces solidification temperature, so that coating is at reduced temperatures, has good mouldability.
Second, its volume resistance of coating of the invention is respectively less than 109, coating compared with the prior art significantly reduces
Resistance, the probability for avoiding the electrostatic spark between oil filling pipe and refueling nozzle from generating.The present invention using 30~35 μm of partial size aluminium powder,
One kind of nickel powder or stainless steel powder, conductive effect stability far surpass conductive titanium white or conductive cloud modified on titanium white or mica powder
It is female.
Third, coating of the invention is powder, VOC is free of, meets the requirement of environmental protection.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Public a kind of saturated polyester resin that acrylic monomers is modified of the invention, the raw material including following mass fraction are made:
20~25 parts of neopentyl glycol, 5~10 parts of ethylene glycol, 40~50 parts of terephthalic acid (TPA), 10~15 parts of M-phthalic acid,
0.01~5 part of trimellitic anhydride, 3~5 parts of glycidyl methacrylate, 0.01~2 part of tin catalyst, 0.01~
2 parts of catalyst.
A method of preparing the modified saturated polyester resin of above-mentioned acrylic monomers, comprising the following steps:
Step 1: in a nitrogen environment, neopentyl glycol, ethylene glycol, terephthalic acid (TPA), M-phthalic acid and tin class is added and urges
Agent is heated to 120 DEG C and starts to stir；
Step 2: being warming up to 225 DEG C of heat preservations, keeps the temperature 20 hours, is cooled to 200 DEG C, biasing benzenetricarboxylic anhydride is further continued for heating up
To 225 DEG C；
Step 3: heat preservation 3 hours vacuumizes dehydration to acid value 35mgKOH/g, is cooled to 170 DEG C, catalyst drop is added
Methylate glycidyl acrylate keeps the temperature 1 hour and discharges.
Embodiment 1
The present embodiment discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, including following mass fraction
Raw material is made: 35 parts of bi-component polyesters, 3 parts of curing agent, 0.2 part of catalyst, 5 parts of conductive metal powders, 0.3 part of defoaming agent, 15
Part barium sulfate, 5 parts of ceramic clays, 1 part of levelling agent.
Wherein, bi-component polyester includes 15 parts of polyester A, 20 parts of polyester B.The saturation that polyester A is acid value 45mgKOH/g is poly-
Ester, viscosity are 2500 (mPa.s/200 degree)；Polyester B is the modified saturated polyester resin of acrylic monomers, and acid value exists
30mgKOH/g, viscosity are at 3000mPa.s/200 DEG C.Curing agent uses TGIC, DHBP of mass ratio 1:1；Catalyst at subpackage
Include 2-methylimidazole；Conductive metal powder use aluminium powder, 30 μm of partial size；Defoaming agent uses benzoin；Levelling agent is polypropylene
Esters of gallic acid levelling agent.
The present embodiment also provides a kind of method for preparing above-mentioned coating, comprising the following steps:
Step 1: each raw material is mixed, and successively carries out two-stage agitation；First segment stirs under 90rpm stirring rate
180s；Second segment stirs 180s under 200rpm rate；Two-stage agitation prevents layering, after primary stirring, allows above and below material
Layer freely mixes, can more substantially low mixing.
Step 2: it is granulated；Extruder successively includes three temperature ranges according to process flow from front to back；First humidity province
Between temperature be 20 DEG C, the temperature in second temperature section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Since this system is anti-
It once temperature of charge is excessively high, should will lead to antedating response quickly, reduce the performance of coating.
Step 3: grinding, filtering obtain product.
Embodiment 2
The present embodiment discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, including following mass fraction
Raw material is made: 50 parts of bi-component polyesters, 5 parts of curing agent, 0.3 part of catalyst, 10 parts of conductive metal powders, 0.4 part of defoaming agent, 17
Part barium sulfate, 10 parts of ceramic clays, 1.5 parts of levelling agents, 0.5 part of antioxidant, 0.2 part of raising agent.
Wherein, bi-component polyester includes 20 parts of polyester A, 30 parts of polyester B；The saturation that the acid value of polyester A is 50mgKOH/g is poly-
Ester, viscosity are 3000 (mPa.s/200 DEG C)；Polyester B is the modified saturated polyester resin of acrylic monomers, and acid value exists
35mgKOH/g, viscosity are in 4500 (mPa.s/200 DEG C).The ingredient of curing agent include the 1,3,5- tri- of mass ratio 1:2 shrink it is sweet
Oil-S- triazinetrione, DHBP；The ingredient of catalyst includes 2 benzylimidazolines；Conductive metal powder uses nickel powder, 33 μ of partial size
m；Defoaming agent uses benzoin；Antioxidant uses four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters；Stream
Flat agent is polyacrylate levelling agent；Raising agent is fumed silica.
The present embodiment also provides a kind of method for preparing above-mentioned coating, comprising the following steps:
Step 1: each raw material is mixed, and successively carries out two-stage agitation；First segment stirs under 90rpm stirring rate
180s；Second segment stirs 180s under 200rpm rate；
Step 2: it is granulated；Extruder successively includes three temperature ranges according to process flow from front to back；First humidity province
Between temperature be 20 DEG C, the temperature in second temperature section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Control drop temperature
Not higher than 140 DEG C, control drop temperature is lower than 140 DEG C.
Step 3: grinding, filtering obtain product.It is ground by air classification mill, wherein main mill 4000rpm, secondary mill
2800rpm；Powder is obtained using 220 meshes.
Embodiment 3
The present embodiment discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, including following mass fraction
Raw material is made: 75 parts of bi-component polyesters, 7 parts of curing agent, 0.5 part of catalyst, 15 parts of conductive metal powders, 0.5 part of defoaming agent, 20
Part barium sulfate, 15 parts of ceramic clays, 2 parts of levelling agents, 1 part of antioxidant, 0.5 part of raising agent.
Wherein, bi-component polyester includes 35 parts of polyester A, 40 parts of polyester B；The saturation that the acid value of polyester A is 55mgKOH/g is poly-
Ester, viscosity are 4500 (mPa.s/200 DEG C)；Polyester B is the modified saturated polyester resin of acrylic monomers, and acid value exists
37mgKOH/g, viscosity are in 6000 (mPa.s/200 DEG C).The ingredient of curing agent includes tri- glycidyl isocyanuric acid of mass ratio 2:1
Ester, epoxide equivalent 110 (g/eq), DHBP；The ingredient of catalyst includes 2- benzylimidazoline；Conductive metal powder uses stainless steel
Powder, 35 μm of partial size；Defoaming agent uses benzoin；Antioxidant uses three (2,4- di-tert-butyl-phenyl) phosphite esters；Levelling agent
For polyacrylate levelling agent；Raising agent is fumed silica.
The present embodiment also provides a kind of method for preparing above-mentioned coating, comprising the following steps:
Step 1: each raw material is mixed, and successively carries out two-stage agitation；First segment stirs under 90rpm stirring rate
180s；Second segment stirs 180s under 200rpm rate；
Step 2: it is granulated；Extruder successively includes three temperature ranges according to process flow from front to back；First humidity province
Between temperature be 20 DEG C, the temperature in second temperature section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Control drop temperature
Not higher than 140 DEG C, control drop temperature is lower than 140 DEG C.
Step 3: grinding, filtering obtain product.It is ground by air classification mill, wherein main mill 4000rpm, secondary mill
2800rpm；Powder is obtained using 220 meshes.
Comparative example 1
The present embodiment discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, including following mass fraction
Raw material is made: 50 parts of bi-component polyesters, 5 parts of curing agent, 0.3 part of catalyst, 0.4 part of defoaming agent, 17 parts of barium sulfate, 10 parts of ceramics
Soil, 1.5 parts of levelling agents, 0.5 part of antioxidant, 10 parts of conductive titanium whites, 0.2 part of raising agent.
Wherein, bi-component polyester includes 20 parts of polyester A, 30 parts of polyester B；The saturation that the acid value of polyester A is 50mgKOH/g is poly-
Ester, viscosity are 3000 (mPa.s/200 DEG C)；Polyester B is the modified saturated polyester resin of acrylic monomers, and acid value exists
35mgKOH/g, viscosity are in 4500 (mPa.s/200 DEG C).The ingredient of curing agent include the 1,3,5- tri- of mass ratio 1:2 shrink it is sweet
Oil-S- triazinetrione and DHBP；The ingredient of catalyst includes 2- benzylimidazoline；Defoaming agent uses benzoin；Antioxidant uses
Four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters；Levelling agent is polyacrylate levelling agent；It is loose
Agent is fumed silica.
The present embodiment also provides a kind of method for preparing above-mentioned coating, comprising the following steps:
Step 1: each raw material is mixed, and carries out two-stage agitation；First segment stirs 180s under 90rpm stirring rate；
Second segment stirs 180s under 200rpm rate；
Step 2: it is granulated；Extruder successively includes three temperature ranges according to process flow from front to back；First humidity province
Between temperature be 20 DEG C, the temperature in second temperature section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Control drop temperature
Not higher than 140 DEG C, control drop temperature is lower than 140 DEG C.
Step 3: grinding, filtering obtain product.It is ground by air classification mill, wherein main mill 4000rpm, secondary mill
2800rpm；Powder is obtained using 220 meshes.
Comparative example 2
The present embodiment discloses a kind of low temperature antistatic powder coating for automobile refuelling pipe, including following mass fraction
Raw material is made: 30 parts of polyester, 30 parts of epoxy resin, 0.3 part of catalyst, 10 parts of conductive metal powders, 0.4 part of defoaming agent, 17 parts
Barium sulfate, 10 parts of ceramic clays, 1.5 parts of levelling agents, 0.5 part of antioxidant, 0.2 part of raising agent.
Wherein, the acid value of polyester is the saturated polyester of 50mgKOH/g, and viscosity is 3000 (mPa.s/200 DEG C)；Epoxy resin
Its epoxide number of B 0.12g/eq；The ingredient of catalyst includes 2- benzylimidazoline, conductive metal powder using nickel powder, 33 μ of partial size
m；Defoaming agent uses benzoin；Antioxidant uses four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters；Stream
Flat agent is polyacrylate levelling agent；Raising agent is fumed silica.
The present embodiment also provides a kind of method for preparing above-mentioned coating, comprising the following steps:
Step 1: each raw material is mixed, and carries out two-stage agitation；First segment stirs 180s under 90rpm stirring rate；
First segment stirs 180s under 200rpm rate；
Step 2: it is granulated；Extruder successively includes three temperature ranges according to process flow from front to back；First humidity province
Between temperature be 20 DEG C, the temperature in second temperature section is 80 DEG C, the temperature of third temperature range is 90 DEG C；Control drop temperature
Not higher than 140 DEG C, control drop temperature is lower than 140 DEG C.
Step 3: grinding, filtering obtain product.It is ground by air classification mill, wherein main mill 4000rpm, secondary mill
2800rpm；Powder is obtained using 220 meshes.
The extruder that each embodiment of the present invention uses is draw ratio for the double screw extruder of 11:1.
Performance test is shown in Table 1
Table 1
As can be seen from Table 1, embodiment 1, embodiment 2, embodiment 3 are poly- to saturation by glycidyl methacrylate
Ester is modified, and is introduced active double bond structure, is greatly strengthened reactivity.Its solidification temperature is relatively right at 120 DEG C or so
Ratio 2, reduces solidification temperature, so that coating is at reduced temperatures, has good mouldability.Embodiment 1, embodiment 2,
The volume resistance of embodiment 3 is respectively less than 109, relative contrast's example 1 significantly reduces resistance, avoid oil filling pipe and refueling nozzle it
Between electrostatic spark generate probability.
It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of low temperature antistatic powder coating for automobile refuelling pipe, which is characterized in that the original including following mass fraction
Material is made: 35~75 parts of bi-component polyesters, 0.2~0.5 part of catalyst, 3~7 parts of curing agent, 5~15 parts of conductive metal powders,
0.3~0.5 part of defoaming agent, 15~20 parts of barium sulfate, 5~15 parts of ceramic clays, 1~2 part of levelling agent；
Wherein, bi-component polyester includes 15~35 parts of polyester A, 20~40 parts of polyester B；The polyester B is modified for acrylic monomers
Saturated polyester resin；
The modified saturated polyester resin of acrylic monomers, the raw material including following mass fraction are made: new the penta 2 of 20~25 parts
Alcohol, 5~10 parts of ethylene glycol, 40~50 parts of terephthalic acid (TPA), 10~15 parts of M-phthalic acid, 0.01~5 part of inclined benzene
Three acid anhydrides, 3~5 parts of glycidyl methacrylate, 0.01~2 part of tin catalyst, 0.01~2 part of catalyst.
2. the low temperature antistatic powder coating according to claim 1 for automobile refuelling pipe, which is characterized in that described to lead
Electric metal powder is aluminium powder, one kind of nickel powder or stainless steel powder.
3. -2 described in any item low temperature antistatic powder coatings for automobile refuelling pipe, feature exist according to claim 1
In its partial size of the conductive metal powder is 30~35 μm.
4. the low temperature antistatic powder coating according to claim 1 for automobile refuelling pipe, which is characterized in that the painting
Material further includes one of antioxidant, raising agent or two kinds.
5. the low temperature antistatic powder coating according to claim 4 for automobile refuelling pipe, which is characterized in that described anti-
Oxygen agent is four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters or three (2,4- di-tert-butyl-phenyl) phosphorous
One kind of acid esters or β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester；The raising agent is gas phase dioxy
SiClx.
6. a kind of method for preparing the modified saturated polyester resin of acrylic monomers as described in claim 1, which is characterized in that
The following steps are included:
Step 1: in a nitrogen environment, neopentyl glycol, ethylene glycol, terephthalic acid (TPA), M-phthalic acid and tin catalyst is added
120 DEG C are heated to start to stir；
Step 2: being warming up to 225 DEG C of heat preservations, keeps the temperature 18~21 hours, is cooled to 200 DEG C, biasing benzenetricarboxylic anhydride is further continued for heating up
To 225 DEG C；
Step 3: heat preservation 3~3.5 hours vacuumizes dehydration to acid value 35mgKOH/g, is cooled to 170 DEG C, catalyst is added
Glycidyl methacrylate is added dropwise, keeps the temperature 1 hour and discharges.
7. a kind of side for preparing the low temperature antistatic powder coating as described in any one in claim 1-5 for automobile refuelling pipe
Method, which comprises the following steps:
Step 1: each raw material is mixed, and successively carries out two-stage agitation；First segment stirs 180s under 90rpm stirring rate；
Second segment stirs 180s under 200rpm rate；
Step 2: it is granulated；Extruder includes three temperature ranges；The temperature of first temperature range is 20 DEG C, second temperature section
Temperature be 80 DEG C, the temperature of third temperature range is 90 DEG C；
Step 3: grinding, filtering obtain product.
8. the method according to the description of claim 7 is characterized in that the material after granulation is passed through air point in the step 3
Grade mill is ground, wherein main mill 4000rpm, secondary mill 2800rpm；Powder is obtained using 220 meshes.
9. according to the method described in claim 8, it is characterized in that, the extruder uses draw ratio to squeeze for the twin-screw of 11:1
Machine out.
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| CN201710124993.7A CN106916519B (en) | 2017-03-03 | 2017-03-03 | Low temperature antistatic powder coating and preparation method thereof for automobile refuelling pipe |
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| CN112724805B (en) * | 2020-12-30 | 2022-08-19 | 广东华江粉末科技有限公司 | Anti-slip powder coating and preparation method thereof |
| CN117024720B (en) * | 2023-10-08 | 2023-12-26 | 张家港市华昌新材料科技有限公司 | Polyester resin for transparent powder coating and preparation method and application thereof |
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