CN108003576A - Automotive compounded instrument panel shell and preparation method thereof - Google Patents
Automotive compounded instrument panel shell and preparation method thereof Download PDFInfo
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- CN108003576A CN108003576A CN201711393989.7A CN201711393989A CN108003576A CN 108003576 A CN108003576 A CN 108003576A CN 201711393989 A CN201711393989 A CN 201711393989A CN 108003576 A CN108003576 A CN 108003576A
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/164—Aluminum halide, e.g. aluminium chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Abstract
The invention discloses a kind of automotive compounded instrument panel shell and preparation method thereof, the present invention plasma-induced silica of application and aluminum chloride mixture and titanate coupling agent modified titanium dioxide are filler, coordinate polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antiseptic, lubricant and antioxidant pass through mixing, extrusion, Shooting Technique, automotive compounded instrument panel shell is obtained, the automotive compounded instrument panel shell not only has higher tensile strength, higher impact flexibility, also there is good water swell resistance, improve its service life in wet environment, can preferably it be applied in auto parts field.And the preparation method of the present invention is simple, raw material is easy to get, and has higher application value.
Description
Technical field
The present invention relates to auto parts and components, and in particular, to a kind of automotive compounded instrument panel shell and preparation method thereof.
Background technology
PBT, is the abbreviation of the English name polybutylene terephthalate of polybutylene terephthalate (PBT), is belonged to
In polyester series, by 1.4-pbt butanediols (1.4-Butylene glycol) and terephthalic acid (TPA) (PTA) or terephthaldehyde
Acid esters (DMT) polycondensation forms, and arrives opaque, crystalline thermoplastic polyester via milky is translucent made of mixing program
Resin.PBT is referred to as thermoplastic polyester or saturated polyester together with PET.The better mechanical property of PBT, high mechanical strength are resistance to tired
Labor and good stability of the dimension, ageing-resistant performance is more excellent, is easy to processing and forming, therefore is most important car light material
One of, it can not only mitigate the quality of parts about 40%, but also purchase cost can be made to reduce by 40% or so, in recent years in vapour
Dosage in car rises rapidly.In automobile manufacturing field, PBT is widely used in producing bumper, carburetion device assembly, gear mud
Plate, spoiler, instrument panel shell, spark plug terminal plate, oil supply system part, instrument board, igniter for automobile, accelerator and clutch
The components such as device pedal.
CN103756268A, publication date 2014.04.30, the China of the artificial Anhui Polymer Science New Material Co., Ltd. of application
Patent application discloses " a kind of polyimide fiber enhancing PBT composite and preparation method thereof ", which increases
Strong PBT composite is composed of the following components by weight percentage：PBT：10%~60%, lower shrinkage filler：1.0%~
30%, compatilizer：1.0%~10%, polyimide fiber：1.0%~60%, toughener：1.0%~10%, other auxiliary agents：
1.0%~10%.The lower shrinkage filler is the one or more such as ABS, AS, PC or montmorillonite.The invention can be carried effectively
The resistance to low temperature of high composite material, improves the warpage of product, while halogen-free flameproof, can be widely applied to automobile component and electricity
Sub- electric equipment products.But, the anti-hydrolytic performance of the composite material is poor, is easily decomposed under hot and humid environment, causes performance
Decline seriously, its main cause is to contain ester bond in PBT, and carboxylic end group concentration is higher, and ester linkage breaking formation hydrolysis can be occurred by meeting water
Reaction.
Therefore, how to keep for the automobile instrument disk casing of base material having with polybutylene terephthalate (PBT) (PBT)
On the basis of having high intensity and toughness, the water resistance of automobile instrument panel sheathing material is improved, is current urgent problem to be solved.
The content of the invention
The object of the present invention is to provide a kind of automotive compounded instrument panel shell and preparation method thereof, the automotive compounded instrument board
Shell not only has higher tensile strength, higher impact flexibility, also with good water swell resistance, can preferably answer
For in auto parts field.And the preparation method of the present invention is simple, raw material is easy to get, and has higher application value.
To achieve these goals, the present invention provides a kind of preparation method of automotive compounded instrument panel shell, the system
Preparation Method comprises the following steps：(1) silica is mixed with aluminium chloride, then carries out plasma-induced, obtain the first filler；
(2) titanium dioxide is modified with titanate coupling agent, obtains modifying titanium dioxide；(3) by the first filler, modified titanium dioxide
Titanium, polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antiseptic, lubricant and antioxidant are once mixed
Close；(4) once mixture in step (3) is extruded, be granulated, injection molding；Wherein, the first filler and modifying titanium dioxide
Mass ratio is 1:2-3.
The present invention also provides a kind of automotive compounded instrument panel shell being prepared according to above-mentioned preparation method.
Through the above technical solutions, the present invention using plasma-induced silica and aluminum chloride mixture and metatitanic acid
The coupling agent modified titanium dioxide of ester is filler, coordinates polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antibacterial
Agent, lubricant and antioxidant have obtained automotive compounded instrument panel shell by mixing, extruding, Shooting Technique.The automotive compounded instrument
Dial plate shell not only has higher tensile strength, higher impact flexibility, also with good water swell resistance, improve its
Service life in wet environment, can preferably be applied in auto parts field.And the preparation method of the present invention is simple,
Raw material is easy to get, and has higher application value.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The endpoint of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of a scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The present invention provides a kind of preparation method of automotive compounded instrument panel shell, the preparation method includes following step
Suddenly：(1) silica is mixed with aluminium chloride, then carries out plasma-induced, obtain the first filler；(2) by titanium dioxide titanium
Acid esters coupling agent is modified, and obtains modifying titanium dioxide；(3) by the first filler, modifying titanium dioxide, polyvinyl acetate, poly-
Mutual-phenenyl two acid bromide two alcohol ester, toughener, antiseptic, lubricant and antioxidant carry out mixed once；(4) by step (3)
Once mixture is extruded, and is granulated, injection molding；Wherein, the mass ratio of the first filler and modifying titanium dioxide is 1:2-3.
Through the above technical solutions, the present invention using plasma-induced silica and aluminum chloride mixture and metatitanic acid
The coupling agent modified titanium dioxide of ester is filler, coordinates polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antibacterial
Agent, lubricant and antioxidant have obtained automotive compounded instrument panel shell, the automotive compounded instrument by mixing, extruding, Shooting Technique
Dial plate shell not only has higher tensile strength, higher impact flexibility, also with good water swell resistance, improve its
Service life in wet environment, can preferably be applied in auto parts field.And the preparation method of the present invention is simple,
Raw material is easy to get, and has higher application value.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the mass ratio of silica and aluminium chloride is 2-3:1.
Wherein, for the average grain diameter of silica and aluminium chloride, can be made choice in relative broad range, in order to improve
The dispersivity of silica and aluminum chloride mixture after ion induction, to further improve the tension of automotive compounded instrument panel shell
The average grain diameter of intensity, impact flexibility and water swell resistance, preferably silica and aluminium chloride is no more than 1 micron.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the condition of ion induction includes：The mixture of silica and aluminium chloride is inserted
On the bottom electrode medium of ion body device, in voltage 110-130kV, electric current 24-26mA, shines under the operating condition of gap 3-5mm
Penetrate 10-20min.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the mass ratio of titanium dioxide and titanate coupling agent is 2-4:1.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the modified condition in step (2) includes：By titanium dioxide titanate coupling agent in
70-90 DEG C in 180-260rpm mixing 20-30min.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that in parts by weight, in step (3)：First 2-4 parts of filler, modifying titanium dioxide 6-8
Part, 8-10 parts of polyvinyl acetate, 30-50 parts of polybutylene terephthalate (PBT), 3-4 parts of toughener, antiseptic 0.1-0.3
Part, 0.3-0.8 parts of 2-3 parts of lubricant and antioxidant.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the condition of mixed once includes in step (3)：In the bar that rotating speed is 220-300rpm
Under part, 20-30min is mixed in 200-240 DEG C.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that extrusion condition includes：The temperature of each section of extruder is 220-290 DEG C, extruder spiral shell
Bar rotating speed is 180-230rpm.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that injection temperature is：280-300℃.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, it is preferable that the temperature of each section of extruder is：The temperature of feeding section is 200-210 DEG C, melting modeling
The temperature for changing section is 270-290 DEG C, and the temperature for mixing homogenizing zone is 250-270 DEG C, and the temperature of melt conveying metering section is 200-
210℃。
For titanate coupling agent, those skilled in the art can make choice in relative broad range, the equal energy of conventional coupling agents
Realize the present invention.For example, two oleic acid acyloxy of isopropyl (dioctyl phosphoric acid acyloxy) titanate esters, (the dioctyl phosphorus of isopropyl three
Sour acyloxy) titanate esters, three oleic acid acyloxy titanate esters of isopropyl, isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters,
Three iso stearate isopropyl titanates, Di(dioctylpyrophosphato) ethylene titanate, two (dioctyl phosphito of tetra isopropyl
Acyloxy) titanate esters, three hydroxy acyl isopropyl titanates, three stearic ester group isopropyl titanates, three (dioctylphosphato) metatitanic acids
Isopropyl ester, two (dioctylphosphato) second two support titanate esters, isopropyl tri(dioctylpyrophosphato)titanate, two (two is pungent
Base pyrophosphoryl epoxide) oxyacetate titanate, two hydroxy acyl second two support metatitanic acid fat, two phosphinylidyne epoxide oxyacetate titanate of hydramine, alcohol
Two pyrophosphoryl epoxide oxyacetate titanate of amine, three (dodecyl benzenesulfonyl) isopropyl titanates, three (isostearoyl of isopropyl
Base) in titanate esters, (dioctyl pyrophosphate) titanate esters of isopropyl three and tetra isopropyl two (phosphorous acid dilauryl) titanate esters
It is a kind of.It is tough in order to improve the tensile strength of automotive compounded instrument panel shell, impact in a kind of preferred embodiment of the present invention
Property and water swell resistance, it is preferable that titanate coupling agent is vinyltriethoxysilane, vinyltrimethoxysilane and second
One or more in alkenyl three (beta-methoxy ethyoxyl) silane.
The plurality of specifications of polyvinyl acetate, such as molecular weight can realize the present invention for 55000-420000, rear
In the specific embodiment of text, the molecular weight for selecting the production of Jiangsu silver dollar gum base materials Co., Ltd is 80000-110000, grade
Illustrated for the polyvinyl acetate of PVAC3.
In a kind of preferred embodiment of the present invention, in order to improve the tensile strength of automotive compounded instrument panel shell, punching
Hit toughness and water swell resistance, in order to reduce cost, raw material is easy to get, it is preferable that polybutylene terephthalate (PBT) it is relatively close
Spend for 1.30-1.35g/cm3, fusing point is 225-230 DEG C, its dynamic viscosity in the molten state is 0.65-1.1Pas.
For toughener, those skilled in the art can make choice in relative broad range, and conventional toughener can realize this
Invention.It is tough in order to improve the tensile strength of automotive compounded instrument panel shell, impact in a kind of preferred embodiment of the present invention
Property and water swell resistance, meanwhile, in order to reduce cost, raw material is easy to get, it is preferable that toughener for diisobutyl phthalate,
In repefral, diethyl phthalate, diisononyl phthalate and diisooctyl phthalate
It is one or more.
For antiseptic, those skilled in the art can make choice in relative broad range, and conventional antimicrobial agent can realize this
Invention.It is tough in order to improve the tensile strength of automotive compounded instrument panel shell, impact in a kind of preferred embodiment of the present invention
Property and water swell resistance, meanwhile, in order to reduce cost, raw material is easy to get, antiseptic for zinc oxide, cupric oxide, ammonium dihydrogen phosphate and
One or more in lithium carbonate.
For lubricant, those skilled in the art can make choice in relative broad range, and conventional lubricantss can realize this
Invention.It is tough in order to improve the tensile strength of automotive compounded instrument panel shell, impact in a kind of preferred embodiment of the present invention
Property and water swell resistance, meanwhile, in order to reduce cost, raw material is easy to get, lubricant for stearic acid, stearate, Tissuemat E, stone
One or more in wax and oleamide.
For antioxidant, those skilled in the art can make choice in relative broad range, and conventional antioxidant can realize this
Invention.It is tough in order to improve the tensile strength of automotive compounded instrument panel shell, impact in a kind of preferred embodiment of the present invention
Property and water swell resistance, meanwhile, in order to reduce cost, raw material is easy to get, and antioxidant is irgasfos 168 and/or antioxidant 264.
The present invention also provides a kind of automotive compounded instrument panel shell being prepared according to above-mentioned preparation method.
Through the above technical solutions, the present invention plasma-induced silica of application and aluminum chloride mixture and titanate esters
Coupling agent modified titanium dioxide is filler, coordinate polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antiseptic,
Lubricant and antioxidant have obtained automotive compounded instrument panel shell, the automotive compounded instrument by mixing, extruding, Shooting Technique
Disk casing not only has higher tensile strength, higher impact flexibility, also with good water swell resistance, improves it in tide
Service life in wet environment, can preferably be applied in auto parts field.And the preparation method of the present invention is simple, former
Material is easy to get, and has higher application value.
The present invention will be described in detail by way of examples below.In following embodiments, titanate coupling agent is isopropyl
Three oleic acid acyloxy titanate esters of base；Polyvinyl acetate is that the molecular weight of Jiangsu silver dollar gum base materials Co., Ltd production is
80000-110000, grade PVAC3；The relative density of polybutylene terephthalate (PBT) is 1.30g/cm3, fusing point 225
DEG C, its dynamic viscosity in the molten state is 0.8Pas；Toughener is diisobutyl phthalate；Antiseptic is oxidation
Zinc；Lubricant is stearic acid；Antioxidant is irgasfos 168；Other are commercially available product.
Preparation example 1
The preparation method of first filler：
No more than 1 micron aluminium chloride of silica of the average grain diameter no more than 1 micron and average grain diameter is mixed,
Mass ratio of silica and aluminium chloride is 2 during this:1, then by the mixture of silica and aluminium chloride insert etc. from
On the bottom electrode medium of daughter device, in voltage 130kV, electric current 26mA, irradiates 20min under the operating condition of gap 5mm.
Preparation example 2
The preparation method of first filler：
No more than 1 micron aluminium chloride of silica of the average grain diameter no more than 1 micron and average grain diameter is mixed,
Mass ratio of silica and aluminium chloride is 3 during this:1, then by the mixture of silica and aluminium chloride insert etc. from
On the bottom electrode medium of daughter device, in voltage 110kV, electric current 24mA, irradiates 10min under the operating condition of gap 3mm.
Preparation example 3
The preparation method of first filler：
No more than 1 micron aluminium chloride of silica of the average grain diameter no more than 1 micron and average grain diameter is mixed,
Mass ratio of silica and aluminium chloride is 2.5 during this:1, then the mixture of silica and aluminium chloride is inserted
On the bottom electrode medium of ion body device, in voltage 120kV, electric current 25mA, irradiates 15min under the operating condition of gap 4mm.
Preparation example 4
Modifying titanium dioxide preparation method：
Titanium dioxide is modified with titanate coupling agent in 90 DEG C in 260rpm mixing 30min, titanium dioxide and titanium
The mass ratio of acid esters coupling agent is 2:1, obtain modifying titanium dioxide.
Preparation example 5
Modifying titanium dioxide preparation method：
Titanium dioxide is modified with titanate coupling agent in 110 DEG C in 180rpm mixing 20min, titanium dioxide and titanium
The mass ratio of acid esters coupling agent is 3:1, obtain modifying titanium dioxide.
Preparation example 6
Modifying titanium dioxide preparation method：
Titanium dioxide is modified with titanate coupling agent in 100 DEG C in 220rpm mixing 25min, titanium dioxide and titanium
The mass ratio of acid esters coupling agent is 2.5:1, obtain modifying titanium dioxide.
Embodiment 1
The preparation method of automotive compounded instrument panel shell：
In parts by weight, by 2 parts of the first filler in preparation example 1,6 parts of modifying titanium dioxide in preparation example 4, poly-vinegar acid
8 parts of vinyl acetate, 30 parts of polybutylene terephthalate (PBT), 3 parts of toughener, 0.1 part of antiseptic, 2 parts of lubricant and antioxidant 0.3
Part carries out mixed once；The condition of mixed once includes：Under conditions of rotating speed is 300rpm, 30min is mixed in 240 DEG C；
Once mixture is extruded, the temperature of extruder feeding section is 210 DEG C during extrusion, and the temperature of fusion plastification section is
290 DEG C, the temperature for mixing homogenizing zone is 270 DEG C, and the temperature of melt conveying metering section is 210 DEG C, and extruder screw rotating speed is
230rpm, is granulated, in 300 DEG C of injection moldings.
Embodiment 2
The preparation method of automotive compounded instrument panel shell：
In parts by weight, preparation example 2 is by 4 parts of the first filler, 8 parts of 5 modifying titanium dioxide of preparation example, polyvinyl acetate 10
Part, 50 parts of polybutylene terephthalate (PBT), 4 parts of toughener, 0.3 part of antiseptic, the 0.8 part of progress of 3 parts of lubricant and antioxidant
Mixed once；The condition of mixed once includes：Under conditions of rotating speed is 220rpm, 20min is mixed in 200 DEG C；
Once mixture is extruded, the temperature of extruder feeding section is 200 DEG C during extrusion, and the temperature of fusion plastification section is
270 DEG C, the temperature for mixing homogenizing zone is 250 DEG C, and the temperature of melt conveying metering section is 200 DEG C, and extruder screw rotating speed is
180rpm, is granulated, in 280 DEG C of injection moldings.
Embodiment 3
The preparation method of automotive compounded instrument panel shell：
In parts by weight, by 3 parts of the first filler in preparation example 3,7 parts of modifying titanium dioxide in preparation example 6, poly-vinegar acid
9 parts of vinyl acetate, 40 parts of polybutylene terephthalate (PBT), 3.5 parts of toughener, 0.2 part of antiseptic, 2.5 parts of lubricant and antioxygen
0.55 part of progress mixed once of agent；The condition of mixed once includes：Under conditions of rotating speed is 260rpm, in 220 DEG C of mixing
25min；
Once mixture is extruded, the temperature of extruder feeding section is 205 DEG C during extrusion, and the temperature of fusion plastification section is
280 DEG C, the temperature for mixing homogenizing zone is 260 DEG C, and the temperature of melt conveying metering section is 205 DEG C, and extruder screw rotating speed is
205rpm, is granulated, in 290 DEG C of injection moldings.
Comparative example 1
Method according to embodiment 3 prepares automotive compounded instrument panel shell, unlike, the first filler with silica with
The mixture of aluminium chloride is replaced.
Comparative example 2
Method according to embodiment 3 prepares automotive compounded instrument panel shell, unlike, the first filler and modified titanium dioxide
The mass ratio of titanium is 1:1, i.e. 3 parts of the first filler, 3 parts of modifying titanium dioxide.
Detect example 1
To obtained automotive compounded instrument panel shell sample in embodiment 1-3 and comparative example 1-2 according to GB/T1040.3-
2006 sample preparations simultaneously detect tensile strength and elongation at break, and impact flexibility is detected with GB/T1043.1-2008.
Detect example 2
Test method is：Sample to be tested is soaked in 100 DEG C of constant temperature water bath, 24 it is small when after according to detection example 1 take
Go out sample, measure its tensile strength, elongation at break and impact flexibility.
Find after testing, before sample immersion in embodiment 1-3 and comparative example 1-2, corresponding tensile strength, fracture are stretched
Long rate and impact flexibility are not much different, wherein being reached with the best performance in embodiment 3, tensile strength 101MPa, impact flexibility
47KJ/m2, it is worst with the impact flexibility of the sample in comparative example 1, it is 39KJ/m2, tensile strength 85MPa.
After the immersion being detected in example 2, it is found that do not have before the apparent relatively immersion of sample in embodiment 1-3 obvious
Change, still smoother.And the sample in comparative example 1,2 after steeping turn white by surface, there is Swelling.
According in standard detection embodiment 1-3 and comparative example 1,2 soak after sample tensile strength and elongation at break with
And impact flexibility, it is found that each parameter of sample does not have significant change in embodiment 1-3, more relatively low before relatively soaking, but relatively low
Amplitude is not more than 5%.And each parameter of sample is decreased obviously in comparative example 1,2, the impact particularly in comparative example 1 is tough
Property, the 50% of sample before only soaking, only 19KJ/m2, its tensile strength is 41MPa.
As described above, the product of the present invention not only has higher tensile strength, higher impact flexibility, also have good
Water swell resistance, can preferably be applied to auto parts field in.
The preferred embodiment of the present invention described in detail above, still, during present invention is not limited to the embodiments described above
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of automotive compounded instrument panel shell, it is characterised in that the preparation method comprises the following steps：
(1) silica is mixed with aluminium chloride, then carries out plasma-induced, obtain the first filler；
(2) titanium dioxide is modified with titanate coupling agent, obtains modifying titanium dioxide；
(3) by the first filler, modifying titanium dioxide, polyvinyl acetate, polybutylene terephthalate (PBT), toughener, antibacterial
Agent, lubricant and antioxidant carry out mixed once；
(4) once mixture in step (3) is extruded, be granulated, injection molding；
Wherein, the mass ratio of the first filler and modifying titanium dioxide is 1:2-3.
2. preparation method according to claim 1, wherein, the mass ratio of silica and aluminium chloride is 2-3:1；It is preferred that
Ground,
The average grain diameter of silica and aluminium chloride is no more than 1 micron.
3. preparation method according to claim 2, wherein, the condition of ion induction includes：By silica and aluminium chloride
Mixture insert on the bottom electrode medium of plasma device, in voltage 110-130kV, electric current 24-26mA, gap 3-5mm
Operating condition under irradiate 10-20min.
4. preparation method according to claim 1, wherein, the mass ratio of titanium dioxide and titanate coupling agent is 2-3:1；
Preferably,
Modified condition in step (2) includes：Titanium dioxide is mixed with titanate coupling agent in 90-110 DEG C in 180-260rpm
Close 20-30min.
5. according to claim 1-4 any one of them preparation methods, wherein, in parts by weight, in step (3)：First filler
2-4 parts, 6-8 parts of modifying titanium dioxide, 8-10 parts of polyvinyl acetate, 30-50 parts of polybutylene terephthalate (PBT), toughener
3-4 parts, 0.1-0.3 parts of antiseptic, 0.3-0.8 parts of 2-3 parts of lubricant and antioxidant.
6. according to claim 1-4 any one of them preparation methods, wherein, the condition of mixed once includes in step (3)：
Under conditions of rotating speed is 220-300rpm, 20-30min is mixed in 200-240 DEG C.
7. according to claim 1-4 any one of them preparation methods, wherein, extrusion condition includes：The temperature of each section of extruder
Spend for 220-290 DEG C, extruder screw rotating speed is 180-230rpm；
And/or injection temperature is：280-300℃；
And/or the temperature of each section of extruder is：The temperature of feeding section is 200-210 DEG C, and the temperature of fusion plastification section is 270-
290 DEG C, the temperature for mixing homogenizing zone is 250-270 DEG C, and the temperature of melt conveying metering section is 200-210 DEG C.
8. preparation method according to claim 5, wherein, titanate coupling agent is (the dioctyl phosphoric acid acyl-oxygen of isopropyl three
Base) titanate esters, three oleic acid acyloxy titanate esters of isopropyl, three iso stearate isopropyl titanates, double (two octyloxy pyrophosphates
Base) one or more in ethylene titanate esters, three hydroxy acyl isopropyl titanates and three stearic ester group isopropyl titanates；
And/or the relative density of polybutylene terephthalate (PBT) is 1.30-1.35g/cm3, fusing point be 225-230 DEG C, its
Dynamic viscosity under molten condition is 0.65-1.1Pas.
9. preparation method according to claim 5, wherein, toughener is diisobutyl phthalate, phthalic acid
One or more in dimethyl ester, diethyl phthalate, diisononyl phthalate and diisooctyl phthalate；
And/or antiseptic is the one or more in zinc oxide, cupric oxide, ammonium dihydrogen phosphate and lithium carbonate；
And/or lubricant is the one or more in stearic acid, stearate, Tissuemat E, paraffin and oleamide；
And/or antioxidant is irgasfos 168 and/or antioxidant 264.
10. the automotive compounded instrument panel shell being prepared according to claim 1-9 any one of them preparation methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393989.7A CN108003576A (en) | 2017-12-21 | 2017-12-21 | Automotive compounded instrument panel shell and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044861A (en) * | 2011-10-14 | 2013-04-17 | 合肥杰事杰新材料股份有限公司 | Antibacterial polybutylene terephthalate composition and preparation method thereof |
| CN105295369A (en) * | 2015-11-17 | 2016-02-03 | 芜湖信宁新材料科技有限公司 | High temperature resistant nylon material composition and preparation method of high temperature resistant nylon |
| CN105542452A (en) * | 2016-03-14 | 2016-05-04 | 王亚莉 | Automotive instrument panel composite with high weather resistance and preparation method of composite |
| CN106751830A (en) * | 2016-11-30 | 2017-05-31 | 江苏经纬技术创新咨询有限公司 | A kind of automobile instrument panel preparation method of flame retardant plastics particle |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044861A (en) * | 2011-10-14 | 2013-04-17 | 合肥杰事杰新材料股份有限公司 | Antibacterial polybutylene terephthalate composition and preparation method thereof |
| CN105295369A (en) * | 2015-11-17 | 2016-02-03 | 芜湖信宁新材料科技有限公司 | High temperature resistant nylon material composition and preparation method of high temperature resistant nylon |
| CN105542452A (en) * | 2016-03-14 | 2016-05-04 | 王亚莉 | Automotive instrument panel composite with high weather resistance and preparation method of composite |
| CN106751830A (en) * | 2016-11-30 | 2017-05-31 | 江苏经纬技术创新咨询有限公司 | A kind of automobile instrument panel preparation method of flame retardant plastics particle |
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Application publication date: 20180508 |