CN106752633B - A kind of easy spray coating polypropylene composite material and preparation method and application - Google Patents
A kind of easy spray coating polypropylene composite material and preparation method and application Download PDFInfo
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- CN106752633B CN106752633B CN201510801461.3A CN201510801461A CN106752633B CN 106752633 B CN106752633 B CN 106752633B CN 201510801461 A CN201510801461 A CN 201510801461A CN 106752633 B CN106752633 B CN 106752633B
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Abstract
A kind of easy spray coating polypropylene composite material and preparation method and application that can be used for automobile parts of the invention, is mainly mixed with by following components: 40-65 parts of polypropylene；10-18 parts of thermoplastic elastomer (TPE)；0-3 parts of polyethylene；0-3 parts of polar copolymer；20-30 parts of mineral filler；Antioxidant, light stabilizer and other function auxiliary agent are a small amount of；Polypropylene, thermoplastic elastomer (TPE), polyethylene, polar copolymer, mineral filler, antioxidant, light stabilizer and other function auxiliary agent are successively added in preparation Shi Xianxiang low speed mixer, mixes at least 2min；It feeds the mixture into double screw extruder and is kneaded again, extrusion temperature is set as 170 DEG C -240 DEG C, and extruding pelletization obtains product after mixing.Easy spray coating polypropylene composite material of the invention can be used for preparing bumper product, have the comprehensive performances such as excellent impact resistance, mobility, rigidity, thermal stability, dimensional stability and sprayable property.
Description
Technical field
The invention belongs to organic polymer composite and its preparation technical field more particularly to a kind of polypropylene composite materials materials
Material and its preparation method and application.
Background technique
With the fast development of domestic and international automobile industry, resource and environmental problem become increasingly conspicuous, and lightweighting materials are in automobile
On application have become a hot topic of research.Automobile bumper material will not only have excellent impact resistance, mobility, rigidity, heat steady
Qualitative and dimensional stability, it is necessary to have good sprayable property, and automobile bumper materials most at present cannot be same
When meet these comprehensive performances requirement.
Polypropylene has many advantages, such as that low intensity height, density, heat-resisting, chemical-resistant resistance, processing temperature range are wide, in automobile
Quick application development is obtained in exterior trimming parts and structural member, modified polypropene has become the mainstream material of production bumper
Material.However, polypropylene is non-polar material, surface can be lower, lower with paint adhesion intensity, is unfavorable for the spray of bumper surface
It applies.Improve PP composite material spraying property there are two main classes approach at present: 1, being surface-treated, using flame, plasma,
The means such as radioreaction generate carbonyl, carboxyl isoreactivity group on the surface of the material, improve spraying property, but complex procedures, behaviour
It is big to make difficulty, usually as supplementary means；2, resin matrix is modified, is improved by addition PP graft or other Polar adjuvants
The surface-active of material, this is the main means for improving material spraying performance.
The Chinese patent literature of Publication No. CN 103087593A discloses a kind of easily-sprayable polypropylene composite and its system
Preparation Method, composition proportion include olefin polymer 2%-15%, ethylene and the octene copolymer of polypropylene 50%-90%, functional group
Toughener 2%-10%, enhancing increase rigid inorganic material 0-25% and additive 0.3-1.5%, processing temperature is 180 DEG C -230
DEG C, product is obtained by double screw extruder extruding pelletization according to certain feeding sequence, melt index (MI) is 7.7~10g/
10min, tensile strength are 23~25MPa, and elongation at break is 15%~30%, and Izod notched impact strength (23 DEG C) is
8.5~10kJ/m2, film adhesive is I grades, material intensity with higher and excellent sprayable property, but mobility
It is poor with impact property, it is unsuitable for the bumper product of production mould complex structural designs.
The Chinese patent literature of Publication No. CN 101838423A discloses a kind of thin-wall bumper modified polypropene material
Material and preparation method thereof improves the mobile performance of material, and the toughening by centainly matching using the copolymer polypropylene of high melting means
The rigidity and tough sexual balance of agent and mineral fibres realization material, but the heat distortion temperature of material is lower, is not able to satisfy high temperature ring
The thermal stability of bumper product in border.
Therefore the prior art is not able to satisfy bumper product still to the high requirement of comprehensive performance, develops one
Kind has the automobile parts material of excellent impact resistance, mobility, rigidity, thermal stability, dimensional stability and sprayable property
Articles become a big technical problem of this field.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
Kind has the easy of the comprehensive performances such as excellent impact resistance, mobility, rigidity, thermal stability, dimensional stability and sprayable property
Spray coating polypropylene composite material correspondingly provides a kind of simple process, the easy to operate easy spray coating polypropylene composite material
Preparation method, and preparing the application in bumper product.
In order to solve the above technical problems, technical solution proposed by the present invention is that a kind of easy spraying that can be used for automobile parts is poly-
Acrylic composite, the PP composite material are mainly mixed with by the component of following mass fraction:
40-65 parts of polypropylene；
10-18 parts of thermoplastic elastomer (TPE)；
0-3 parts of polyethylene；
0-3 parts of polar copolymer；
20-30 parts of mineral filler；
0.3-0.5 parts of antioxidant；
0.3-0.5 parts of light stabilizer；With
1-2 parts of other function auxiliary agent.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the polypropylene is block copolymerization polypropylene and anti-impact
The mass ratio of the mixture of copolymer polypropylene, the two ranges preferably from 6: 5~16: 9.It is furthermore preferred that the block copolymerization poly- third
The melt index of alkene is 80-110g/10min；The melt index of the impact copolymer polypropylene is 20-40g/10min.We
Studies have shown that using single polypropylene as resin matrix, be generally difficult to meet high-end bumper product to material high rigidity,
The requirement of high tenacity and good fluidity etc. is based on this, and the present invention is as an improvement scheme, it is preferred to use block copolymerization
Polypropylene and impact copolymer polypropylene are compounded.Block copolymerization polypropylene is the block copolymer of ethylene and propylene, molecular weight
Narrowly distributing, crystallinity is high, rigidity and mobility with higher, and low-temperature flexibility is better than homo-polypropylene；Impact copolymer polypropylene is
The random copolymer of ethylene and propylene, ethylene contents are higher, have preferable comprehensive performance.According to a certain percentage by two kinds of resins
Compounding has very high mobility and preferable rigidity and toughness.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the thermoplastic elastomer (TPE) is ethylene-octene copolymerization
One or more of object, ethylene-butene copolymer, ethylene propylene diene rubber.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the polyethylene is low density polyethylene (LDPE), linear low close
Spend one or more of polyethylene, high density polyethylene (HDPE).It is furthermore preferred that the polyethylene and polar copolymer select an addition.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the polar copolymer is ethylene-methyl methacrylate first
One or more of ester copolymer (abbreviation EMMA), ethylene-methyl acrylate copolymer more preferably use EMMA.Existing skill
Art generally use PP graft promoted material surface polarity, due to PP graft be on PP strand formed radical reaction and
It is formed, has monomer remnants, reactivity is high, and thermal stability is poor, after two hot procedures of extruding pelletization and injection molding
Performance tends to decrease.And the present invention cooperates by using ethylene methyl methacrylate copolymer with polypropylene, can significantly mention
The high sprayable property of material, especially EMMA thermal stability are better than PP graft and similar ethylene-polar unit copolymer, strand
In ester group can promote the compatible of resin and filler, improve the surface polarity of material.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the mineral filler is talcum powder, calcium carbonate, sulfuric acid
One or more of barium；The partial size of the mineral filler is 3~7 μm.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the antioxidant is Hinered phenols and phosphorous acid esters
Complex type antioxidant；The light stabilizer is answering for hindered amine light stabilizer and O-hydroxyl-diphenyl ketone class ultraviolet absorbing agent
Close object.
In above-mentioned easy spray coating polypropylene composite material, it is preferred that the other function auxiliary agent be calcium stearate, N,
One or more of N '-ethylene bis stearamide, aliphatic epoxy copolymer, white oil, titanate coupling agent.
As a general technical idea, the present invention also provides a kind of preparations of above-mentioned easy spray coating polypropylene composite material
Method, comprising the following steps:
1. successively added according to the mass fraction into low speed mixer polypropylene, thermoplastic elastomer (TPE), polyethylene,
Polar copolymer, mineral filler, antioxidant, light stabilizer and other function auxiliary agent, after having added by aforementioned sequence, remix
At least 2min；General 2-5min；
It being kneaded 2. mixture derived above is added in double screw extruder, extrusion temperature is set as 170 DEG C -240 DEG C,
Extruding pelletization obtains easy spray coating polypropylene composite material after mixing.
As a general technical idea, the present invention also provides a kind of above-mentioned easy spray coating polypropylene composite materials to prepare
Application in bumper product.
Compared with the prior art, the advantages of the present invention are as follows: the present invention provides a kind of easy spray coating polypropylene composite materials
And its preparation method and application, on the basis of PP/EPDM/ Talc, the sprayable property of material is improved, and make
Material is provided simultaneously with high flowing, high-impact and excellent thermal stability and dimensional stability.In addition, technical solution of the present invention
Performance requirement and injection molding feature also particular for high-performing car bumper product, provide easy spray coating polypropylene composite wood
Material a variety of optimization formulas, the PP composite material of advantageous embodiment not only good fluidity (melt index is between 20-25), plus
Work temperature range is wide (190 DEG C -240 DEG C), and is convenient for the large-scale bumper product of molding structure complexity.Guaranteeing sprayable property
While, PP composite material of the invention has very high toughness and elongation at break, and shock resistance is fine, and has
There is higher heat distortion temperature, can satisfy the products application requirement under varying environment.
Specific embodiment
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
A kind of easy spray coating polypropylene composite material can be used for automobile parts, the PP composite material is mainly by following matter
The component of amount number is mixed with:
Polypropylene；The polypropylene be block copolymerization polypropylene (in each embodiment melt index be 95 ± 10g/10min) and
The mixture of impact copolymer polypropylene (melt index is 30 ± 5g/10min in each embodiment)；It uses in various embodiments
Different dosage and proportion, referring specifically to the following table 1；
15 parts of thermoplastic elastomer (TPE) ethylene-octene copolymer；
3 parts or 0 part of linear low density polyethylene (referring specifically to the following table 1)；
3 parts or 0 part of ethylene methyl methacrylate copolymer (referring specifically to the following table 1)；
20-30 parts of mineral filler (partial size of mineral filler is 3~7 μm)；It uses in various embodiments different
Dosage and proportion, referring specifically to the following table 1；
Hinered phenols with 0.3 part of phosphorous acid esters complex type antioxidant；
0.3 part of compound of hindered amine light stabilizer and O-hydroxyl-diphenyl ketone class ultraviolet absorbing agent；With
2 parts of other function auxiliary agent (concrete composition is referring to the following table 1).
Table 1: the raw material ratio (unit: mass parts) of each embodiment
A kind of preparation method of the above-mentioned easy spray coating polypropylene composite material of the present embodiment, comprising the following steps:
1. successively added according to above-mentioned mass fraction into low speed mixer polypropylene, thermoplastic elastomer (TPE), polyethylene,
Polar copolymer, mineral filler, antioxidant, light stabilizer and other function auxiliary agent, after having added by aforementioned sequence, remix
2min-5min；
It being kneaded 2. mixture derived above is added in double screw extruder, extrusion temperature is set as 170 DEG C -240 DEG C,
Extruding pelletization obtains easy spray coating polypropylene composite material after mixing.
Mechanical test and testing performance index are carried out to the easy spray coating polypropylene composite material that the various embodiments described above obtain, obtained
Arrive that test result is as follows shown in table 2.
Table 2: each embodiment test result
It is same to can be seen that easy spray coating polypropylene composite material made from various embodiments of the present invention from the test result of upper table 2
When have high flowing, high-impact and excellent thermal stability and dimensional stability, and embodiment 2, embodiment 4 and embodiment
5 spraying property is better than embodiment 1 and embodiment 3.In same ratio filling, polar copolymer is only added than adding poly- second
Alkene spraying effect is more excellent.Because polar copolymer and polyethylene toughness height, intensity are low, to guarantee material stiffness, more preferably only add
Add one kind.
Therefore easy spray coating polypropylene composite material combination property of the invention is superior to existing general polypropylene and answers
Composite product can be widely applied in preparing high-end bumper product.
Claims (8)
1. a kind of easy spray coating polypropylene composite material that can be used for automobile parts, which is characterized in that the PP composite material
Mainly it is mixed with by the component of following mass fraction:
40-65 parts of polypropylene；
10-18 parts of thermoplastic elastomer (TPE)；
0-3 parts of polyethylene；
0-3 parts of polar copolymer；
20-30 parts of mineral filler；
0.3-0.5 parts of antioxidant；
0.3-0.5 parts of light stabilizer；With
1-2 parts of other function auxiliary agent；
Wherein, the polypropylene is the mixture of block copolymerization polypropylene and impact copolymer polypropylene；The block copolymerization poly- third
The mass ratio of alkene and impact copolymer polypropylene is 6: 5~16: 9；Block copolymerization polypropylene is the block copolymer of ethylene and propylene,
Impact copolymer polypropylene is the random copolymer of ethylene and propylene；
The polar copolymer be one of ethylene methyl methacrylate copolymer, ethylene-methyl acrylate copolymer or
It is several；
Both the polyethylene and polar copolymer at least add one kind.
2. easy spray coating polypropylene composite material according to claim 1, which is characterized in that the block copolymerization polypropylene
Melt index is 80-110g/10min；The melt index of the impact copolymer polypropylene is 20-40g/10min.
3. easy spray coating polypropylene composite material according to claim 1, which is characterized in that the thermoplastic elastomer (TPE) is second
One or more of alkene-octene copolymer, ethylene-butene copolymer, ethylene propylene diene rubber.
4. easy spray coating polypropylene composite material according to claim 1, which is characterized in that the polyethylene is poly- for low-density
One or more of ethylene, linear low density polyethylene, high density polyethylene (HDPE).
5. easy spray coating polypropylene composite material according to claim 1, which is characterized in that the mineral filler is talcum
One or more of powder, calcium carbonate, barium sulfate；The partial size of the mineral filler is 3~7 μm.
6. easy spray coating polypropylene composite material according to claim 1, which is characterized in that the antioxidant is Hinered phenols
With phosphorous acid esters complex type antioxidant；The light stabilizer is that hindered amine light stabilizer and O-hydroxyl-diphenyl ketone class are ultraviolet
The compound of light absorbers；The other function auxiliary agent is calcium stearate, N, N '-ethylene bis stearamide, aliphatic epoxy
One or more of copolymer, white oil, titanate coupling agent.
7. a kind of preparation method of such as easy spray coating polypropylene composite material according to any one of claims 1 to 6, including it is following
Step:
1. successively adding polypropylene, thermoplastic elastomer (TPE), polyethylene, polarity into low speed mixer according to the mass fraction
Copolymer, mineral filler, antioxidant, light stabilizer and other function auxiliary agent, after having added by aforementioned sequence, remix at least
2min；
It is kneaded 2. mixture derived above is added in double screw extruder, extrusion temperature is set as 170 DEG C -240 DEG C, squeezes out
It is granulated, obtains easy spray coating polypropylene composite material after mixing.
8. a kind of as easy spray coating polypropylene composite material according to any one of claims 1 to 6 is preparing bumper production
Application in product.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109384986A (en) * | 2017-08-09 | 2019-02-26 | 中国石化扬子石油化工有限公司 | A kind of 3D printing easy spraying polyethylene composition and preparation method thereof |
| CN108164808A (en) * | 2018-01-09 | 2018-06-15 | 武汉金发科技有限公司 | A kind of sprayable modified polypropylene composite material and preparation method thereof |
| CN109679219A (en) * | 2018-12-28 | 2019-04-26 | 金旸（厦门）新材料科技有限公司 | One kind exempting from flame treatment polypropylene material for automotive bumper and preparation method thereof |
| CN111286116A (en) * | 2019-12-19 | 2020-06-16 | 会通新材料股份有限公司 | UVC irradiation-resistant polypropylene/polyethylene weather-resistant composite material and preparation method thereof |
| CN111484700A (en) * | 2019-12-20 | 2020-08-04 | 四川鑫达企业集团有限公司 | High-glossiness high-toughness polypropylene composite material and preparation method thereof |
| CN110903555B (en) * | 2019-12-20 | 2022-06-07 | 金发科技股份有限公司 | Polypropylene composition |
| CN112175548A (en) * | 2020-09-22 | 2021-01-05 | 江苏金陵奥普特高分子材料有限公司 | TPV easy to bond with glue and manufacturing method thereof |
| CN112679859B (en) * | 2020-12-11 | 2022-11-18 | 上海金发科技发展有限公司 | Transparent polypropylene composite material for new energy automobile and preparation method thereof |
| CN112778650A (en) * | 2020-12-22 | 2021-05-11 | 长沙新材料产业研究院有限公司 | Easily-sprayed composition suitable for thin-wall injection molding and preparation method thereof |
| CN114395189B (en) * | 2021-12-17 | 2023-09-26 | 金发科技股份有限公司 | Polyolefin composition and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206383A (en) * | 2011-06-30 | 2011-10-05 | 广州市聚赛龙工程塑料有限公司 | Polypropylene composite for automobile bumpers, and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206383A (en) * | 2011-06-30 | 2011-10-05 | 广州市聚赛龙工程塑料有限公司 | Polypropylene composite for automobile bumpers, and preparation method thereof |
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