CN108084562A - A kind of thin-walled property PP composite material of good appearance and preparation method thereof - Google Patents
A kind of thin-walled property PP composite material of good appearance and preparation method thereof Download PDFInfo
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- CN108084562A CN108084562A CN201711387907.8A CN201711387907A CN108084562A CN 108084562 A CN108084562 A CN 108084562A CN 201711387907 A CN201711387907 A CN 201711387907A CN 108084562 A CN108084562 A CN 108084562A
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- thin
- composite material
- walled property
- good appearance
- parts
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to technical field of macromolecules, and in particular to a kind of thin-walled property PP composite material of good appearance and preparation method thereof, the thin-walled property PP composite material of the good appearance is made of feedstock composition, and the feedstock composition includes：15~65 parts by weight of polypropylene, 10~25 parts by weight of appearance modifying agents, 5~15 parts by weight of glass microballoon, 5~10 parts by weight of toughener, 15~35 parts by weight of filler, 1~5 parts by weight of compatilizer, 0.1~2 parts by weight of selectable auxiliary agent.The present invention is by adding glass microballoon and appearance modifying agents, the internal stress after thin-walled property PP composite material depanning can be reduced, improve macroscopic view flowing smoothness of the melt polypropylene in injection moulding process, so that the defects of appearance of thin-walled parts is good, without tiger fur line, light and shade line and stress trace, the one-pass finished qualification rate and production efficiency of parts factory are improved.
Description
Technical field
The present invention relates to technical field of macromolecules, and in particular to a kind of thin-walled property PP composite material of good appearance and its
Preparation method.
Background technology
Plastics used in automotive upholstery account for more than the 50% of vehicle amount of plastic, modern with the rapid development of science and technology
Larger variation has occurred in the composition of automobile making material.Since the nineties, automotive material to lightweight, save resource, height
Performance and high function direction are developed.At present for lightweight interior/exterior material, light-weighted main means have low-density, thin-walled property
With fretting map etc..Wherein thin-walled property becomes because its early investment is small, production efficiency is high, does not influence the advantages such as traffic safety performance
The Main way of automobile interior exterior decorations selection at present.
With continuous pursuit of each automobile main frame maker to automotive light weight technology, the interior trim of automobile be part from 3mm before not
Disconnected to be reduced to 1.8-2mm, while part wall thickness is reduced merely, the requirement to material also constantly improves, in order to meet vapour
The component assembly of Main Engine factory and test request, the Materials of thin-walled property part into it is a kind of have high flowing, high tenacity and
The " three high " characteristic of high rigidity, however simultaneously it has been found that three high materials of simple " height flowing, high tenacity and high rigidity ",
Often occur the open defect of tiger fur line, light and shade line and stress trace in injection moulding process, to this each parts factory frequently by
The means such as spray painting overcome, but with people in recent years to the raising of environmental consciousness and original equipment manufacturer to one-pass finished qualification rate
It is required that improving, traditional " three high " thin-walled property material can not meet present requirement well.
The content of the invention
Lacking for tiger fur line, light and shade line and stress trace is generated when thin-walled property is molded for thin-walled property material in the prior art
It falls into, an object of the present invention is to provide a kind of thin-walled property PP composite material of good appearance, it is in thin-walled property injection molding
Sample appearance obtained is good afterwards.
The second object of the present invention is to provide a kind of preparation method of the thin-walled property PP composite material of good appearance.
To achieve these goals, the present invention provides a kind of thin-walled property PP composite material of good appearance, by raw material group
It closes object to be made, the feedstock composition includes：
The present invention also provides a kind of preparation method of the thin-walled property PP composite material of the good appearance, including following
Step：
Polypropylene, toughener, appearance modifying agents, compatilizer and auxiliary agent in mixer are stirred evenly, then added in double
In screw extruder, filler and glass microballoon are added in the side spout of extruder, under nitrogen protection melting extrusion, granulation
The thin-walled property PP composite material of good appearance is made in shaping.
Through the above technical solutions, the present invention has following technique effect：
(1) in the present invention, glass microballoon is inserted into the lamellar spacing between toughener and appearance modifying agents, formed " core-
Shell " structure enhances the interfacial bond strength of soot-particles and matrix.Since glass microballoon is the spherical structure of rule,
When it is dispersed in polypropylene, it can be very good in the gap that intercalation is formed in resin and inorganic fill, play mutual profit
Sliding effect, reduces the internal stress after product depanning, by the interaction of glass microballoon and appearance modifying agents, improves poly- third
Macroscopic view flowing smoothness of the alkene melt in injection moulding process, makes the appearance of thin-walled parts well without tiger fur line, light and shade line and stress
The defects of trace, improves the one-pass finished qualification rate and production efficiency of parts factory.
(2) the thin-walled property PP composite material of heretofore described good appearance has good rigidity, toughness and stream
Dynamic property, meets the requirement of thin-walled property material.
(3) raw material in the present invention is all from commercially available, is derived from a wealth of sources, workable, is easy to large-scale industrial production,
The great cost performance of product.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
The specific 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 numberical range, between the endpoint value of each scope, respectively
It between the endpoint value of a scope and individual point value and can be individually combined with each other between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of thin-walled property PP composite materials of good appearance, are made of feedstock composition, the original
Feed composition includes：
In the present invention, glass microballoon is inserted into the lamellar spacing between toughener and appearance modifying agents, is formed " core-shell structure copolymer "
Structure enhances the interfacial bond strength of soot-particles and matrix.Since glass microballoon is the spherical structure of rule, when it
It is dispersed in polypropylene, can be very good in the gap that intercalation is formed in resin and inorganic fill, play mutual lubrication and make
With reducing the internal stress after product depanning, by the interaction of glass microballoon and appearance modifying agents, improve polypropylene melt
Macroscopic view flowing smoothness of the body in injection moulding process, makes the appearance of thin-walled parts well without tiger fur line, light and shade line and stress trace etc.
Defect improves the one-pass finished qualification rate and production efficiency of parts factory.
In the present invention, the polypropylene is copolymer polypropylene, and mobility of the copolymer polypropylene in injection is to influence thin-walled
An important factor for changing polypropylene internal stress, in order to reduce the polyacrylic underwear power of thin-walled property, under optimum condition, 230 DEG C,
Under the test condition of 2.16kg, the melt index (MI) of the copolymer polypropylene is 20~100g/10min.
In order to improve the compatible degree of glass microballoon, appearance modifying agents, toughener, filler in polypropylene, optimum condition
Under, the compatilizer is maleic anhydride inoculated polypropylene.
Under optimum condition, the appearance modifying agents are metallocene PE (mPE).
In order to reduce the density of thin-walled property PP composite material, under optimum condition, the glass microballoon is hollow glass
Microballon, in order to further improve glass microballoon to polyacrylic lubricating action, under optimum condition, the hollow glass microbead it is straight
Footpath is 10~50um.
In the present invention resilience of the polypropylene in injection moulding process, preferred stripe are improved by adding in toughener in polypropylene
Under part, the toughener in ethylene-butylene polymer, ethylene-octene copolymer and ethylene-propylene polymer at least one
Kind.
In order to optimize the polyacrylic mechanical strength of the thin-walled property, under optimum condition, the filler be selected from talcum powder and/
Or calcium carbonate, the mesh number of the filler are the mesh of 3000 mesh~7000.
In order to further optimize the comprehensive performance of the thin-walled property PP composite material, the present invention adds also in polypropylene
Enter selectable auxiliary agent, wherein, it is steady that the auxiliary agent is selected from antioxidant, lubricant, UV absorbers, finishing agent, light
Determine at least one of agent, scratch resistance liniment, antistatic agent and colorant.
In order to further optimize the inoxidizability of thin-walled property PP composite material, under optimum condition, the antioxidant choosing
From at least one of Hinered phenols antioxidant, thiosulfates kind antioxidant and phosphite ester kind antioxidant, further preferably
, the Hinered phenols antioxidant be antioxidant 1010, the thiosulfates kind antioxidant be anti-oxidant DLTP, the phosphorous
Acid esters kind antioxidant is irgasfos 168.In order to simplify the expressing technique of thin-walled property PP composite material, under optimum condition, institute
Lubricant is stated as at least one of polyethylene wax, calcium stearate, zinc stearate, lignite wax, pentaerythritol stearate.Into one
Step is preferred, and the ultra-violet absorber is selected from least one of UV-9, UV-531 and UVP-327.The scratch resistance liniment is
Dimethyl silicone rubber.The light stabilizer is selected from light stabilizer 292, light stabilizer 622, light stabilizer 770 and light stabilizer 944
At least one of.The one kind of the finishing agent in erucyl amide, glycerin monostearate, oleamide.It is described
Antistatic agent is selected from least one of polyether ester amides, epoxypropane copolymerization object and ethylene oxide.The colorant is selected from
At least one of carbon black, lemon yellow, indigo, phthalocyanine green.
The present invention also provides a kind of preparation method of the thin-walled property PP composite material of the good appearance, including following step
Suddenly：
Polypropylene, toughener, appearance modifying agents, compatilizer and auxiliary agent in mixer are stirred evenly, then added in double
In screw extruder, filler and glass microballoon are added in the side spout of extruder, under nitrogen protection melting extrusion, granulation
The thin-walled property PP composite material of good appearance is made in shaping.
The present invention does not have the technique of stirring special requirement, as long as can stir evenly each raw material, preferred stripe
Under part, the technique of the stirring is：Stir speed (S.S.) is 800~1500r/min, and mixing time is 3~15min.
Under optimum condition, the screw slenderness ratio of the double screw extruder is (40~50)：1.
Under optimum condition, the technique of the melting extrusion is：Temperature is 190-230 DEG C, screw speed 200-500r/
min。
The screw combinations of double screw extruder include feeding section, melt zone and metering section in the present invention, and the twin-screw squeezes
It is that the forward screw thread that helical pitch is 56/56mm, spiral groove depth is 10-12mm conveys segment element to go out the screw combinations of machine in feeding section,
And melting mixing section forms for the gear block of 30 ° and 45° angle, it is further preferred that the screw combinations of the double screw extruder
Increase by one group of toothed disc in metering section, improve the scattered in screw rod of glass microballoon.
In order to further reduce the polyacrylic internal stress of thin-walled property, under optimum condition, there are two the double screw extruders
Place is vacuumized, one of them place of vacuumizing is located at the end of material conveying section, the starting end of melt zone；Another place of vacuumizing is located at
Metering section.
The present invention will be described in detail by way of examples below.In following embodiment, metallocene PE (EXACT
6202) it is purchased from Exxon Corporation；Glass microballoon (IM16K) is purchased from 3M companies；Copolymer polypropylene (PP MN60G) is purchased from Guangzhou stone
Change；Maleic anhydride inoculated polypropylene (CA100) is purchased from Acker agate；Ethylene-butylene polymer (POE 8137) is purchased from DOW.
In following embodiment, the screw combinations of double screw extruder include feeding section, melt zone and metering section, wherein feeding
The forward screw thread conveying segment element that the helical pitch of section is 56/56mm, spiral groove depth is 10-12mm, melting mixing section is 30 ° and 45 °
The gear block composition at angle, metering section increase by one group of toothed disc, improve the scattered in screw rod of glass microballoon.The twin-screw extrusion
The screw slenderness ratio of machine is (40~50):1.
Embodiment 1
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance, step are as follows：
65 parts by weight are by PP MN60G, 5 parts by weight of ethylene-octene polymer, 10 parts by weight mPE (EXACT 6202), 1 weight
Part maleic anhydride inoculated polypropylene CA100 and 0.1 parts by weight pentaerythritol stearate are measured in mixer, under 800r/min
Stir 5min；Then add in double screw extruder, 15 parts by weight talcum powder and 5 parts by weight are added in the side spout of extruder
The thin-walled property PP composite material of good appearance is made in glass microballoon, under nitrogen protection melting extrusion, granulating and forming, wherein
The technique of melting extrusion is：Melting extrusion temperature is 230 DEG C, screw speed 200r/min.
Embodiment 2
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance, step are as follows：
By 60 parts by weight PP MN60G, 5 parts by weight POE 8137,10 parts by weight mPE (EXACT6202), 2 parts by weight Malaysias
Anhydride-grafted polypropylene CA100,0.5 parts by weight anti-oxidant DLTP and 0.5 weight account polyethylene wax are in mixer, in 1000r/
3min is stirred under min；Then add in double screw extruder, 20 parts by weight talcum powder and 5 are added in the side spout of extruder
The thin-walled property polypropylene composite materials material of good appearance is made in parts by weight of glass microballon, under nitrogen protection melting extrusion, granulating and forming
Material, the technique of wherein melting extrusion are：Melting extrusion temperature is 190 DEG C, screw speed 500r/min.
Embodiment 3
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance, step are as follows：
35 parts by weight PP MN60G, POE 8137,20 parts by weight mPE (EXACT 6202), 2 parts by weight maleic anhydride are connect
Branch polypropylene CA100,0.5 parts by weight irgasfos 168,0.3 parts by weight of calcium stearate, 0.2 parts by weight UVP-327,0.4 parts by weight
Oleamide and 0.1 parts by weight phthalocyanine green stir 15min in mixer under 1500r/min；Then twin-screw extrusion is added in
In machine, 25 weight parts of calcium carbonate and 10 parts by weight of glass microballons are added in the side spout of extruder, are melted under nitrogen protection
It squeezes out, granulating and forming, the thin-walled property PP composite material of good appearance is made, the technique of wherein melting extrusion is：Melting extrusion
Temperature is 210 DEG C, screw speed 400r/min.
Embodiment 4
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance, step are as follows：
By 30 parts by weight PP MN60G, 10 parts by weight of ethylene-acrylic polymers, 20 parts by weight mPE (EXACT 6202), 3
Parts by weight maleic anhydride graft polypropylene CA100,1 parts by weight dimethyl silicone rubber and 1 parts by weight light stabilizer 292 are in mixer
In, stir 10min under 1200r/min；Then add in double screw extruder, 30 weight are added in the side spout of extruder
Part calcium carbonate and 10 parts by weight of glass microballons, melting extrusion, granulating and forming, the thin-walled property that good appearance is made gather under nitrogen protection
The technique of acrylic composite, wherein melting extrusion is：Melting extrusion temperature is 200 DEG C, screw speed 300r/min.
Embodiment 5
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance is the same as embodiment 1.
Comparative example 1
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance is the same as embodiment 1.
Comparative example 2
A kind of thin-walled property PP composite material of good appearance, is made of following substance：
The preparation method of the thin-walled property PP composite material of the good appearance is the same as embodiment 1.
Test：By the main physical property of thin-walled property PP composite material made from above-described embodiment 1~5 and comparative example 1~2
Index is lacked according to coherent detection standard testing, melt index, density, tensile strength, bending strength, bending modulus, cantilever beam
Mouth impacts strong examination criteria and testing result, experimental result are as shown in table 1.
Evaluated for appearance method：It can be determined that surface tiger fur line quantity situation by visual observation, (two bright by testing tiger fur line
Dark line) gloss value changing value DG can be determined that the verification degree of tiger fur line.
Table 1：The performance table of each thin-walled property PP composite material in Examples 1 to 5 and comparative example 1~2
From table 1 it follows that Examples 1 to 5 thin-walled property PP composite material has excellent mobility, high tenacity
And high impact property and good appearance.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail, within the scope of the technical concept of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that the specific technical features described in the above specific embodiments, 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 also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of thin-walled property PP composite material of good appearance, which is characterized in that be made of feedstock composition, the raw material group
Closing object includes：
2. the thin-walled property PP composite material of good appearance according to claim 1, wherein, the polypropylene is poly- for copolymerization
Propylene；And/or
The compatilizer is maleic anhydride inoculated polypropylene；And/or
The appearance modifying agents are metallocene PE.
3. the thin-walled property PP composite material of good appearance according to claim 2, wherein, the copolymer polypropylene melts
Melt index as 20~100g/10min.
4. the thin-walled property PP composite material of good appearance according to claim 1, wherein, the glass microballoon is hollow
Glass microballoon, a diameter of 10-50 μm of the hollow glass microbead.
5. the thin-walled property PP composite material of good appearance according to claim 1, wherein, the toughener is selected from second
At least one of alkene-butene polymers, ethylene-octene copolymer and ethylene-propylene polymer.
6. the thin-walled property PP composite material of good appearance according to claim 1, wherein, the filler is selected from talcum
Powder and/or calcium carbonate, the mesh number of the filler are the mesh of 3000 mesh~7000.
7. the thin-walled property PP composite material of good appearance according to claim 1, wherein, the auxiliary agent is selected from antioxygen
In agent, lubricant, UV absorbers, finishing agent, light stabilizer, scratch resistance liniment, antistatic agent and colorant at least
It is a kind of.
8. the preparation method of the thin-walled property PP composite material of good appearance as claimed in any of claims 1 to 7,
It is characterised in that it includes following steps：
Polypropylene, toughener, appearance modifying agents, compatilizer and auxiliary agent in mixer are stirred evenly, then add in twin-screw
In extruder, filler and glass microballoon are added in the side spout of extruder, under nitrogen protection melting extrusion, be granulated into
The thin-walled property PP composite material of good appearance is made in type.
9. preparation method according to claim 8, wherein, the screw slenderness ratio of the double screw extruder for (40~
50)：1.
10. preparation method according to claim 8 or claim 9, wherein, the technique of the stirring is：Stir speed (S.S.) for 800~
1500r/min, mixing time are 3~15min；And/or
The technique of the melting extrusion is：Temperature is 190~230 DEG C, and screw speed is 200~500r/min.
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| CN201711387907.8A CN108084562A (en) | 2017-12-20 | 2017-12-20 | A kind of thin-walled property PP composite material of good appearance and preparation method thereof |
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| CN201711387907.8A CN108084562A (en) | 2017-12-20 | 2017-12-20 | A kind of thin-walled property PP composite material of good appearance and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467776A (en) * | 2019-07-30 | 2019-11-19 | 武汉金发科技有限公司 | A kind of PP composite material and preparation method thereof |
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| CN105542375A (en) * | 2015-12-30 | 2016-05-04 | 上海普利特复合材料股份有限公司 | High-performance polypropylene composite material applicable to thin-walled part injection molding and preparation method thereof |
| CN106280016A (en) * | 2016-08-29 | 2017-01-04 | 合肥会通新材料有限公司 | Low-density bionical PP composite material of super sub-light and preparation method thereof |
| CN106751353A (en) * | 2016-12-26 | 2017-05-31 | 重庆普利特新材料有限公司 | A kind of low-density that can be used for thin-walled property moulding, high-performance polypropylene compound material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103131086A (en) * | 2011-12-02 | 2013-06-05 | 合肥杰事杰新材料股份有限公司 | Scraping-resistant polypropylene combination with good appearance and manufacturing method and application thereof |
| CN105542375A (en) * | 2015-12-30 | 2016-05-04 | 上海普利特复合材料股份有限公司 | High-performance polypropylene composite material applicable to thin-walled part injection molding and preparation method thereof |
| CN106280016A (en) * | 2016-08-29 | 2017-01-04 | 合肥会通新材料有限公司 | Low-density bionical PP composite material of super sub-light and preparation method thereof |
| CN106751353A (en) * | 2016-12-26 | 2017-05-31 | 重庆普利特新材料有限公司 | A kind of low-density that can be used for thin-walled property moulding, high-performance polypropylene compound material and preparation method thereof |
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| CN110467776A (en) * | 2019-07-30 | 2019-11-19 | 武汉金发科技有限公司 | A kind of PP composite material and preparation method thereof |
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