CN1235989A - Polypropylene composition for coating - Google Patents
Polypropylene composition for coating Download PDFInfo
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- CN1235989A CN1235989A CN 98101858 CN98101858A CN1235989A CN 1235989 A CN1235989 A CN 1235989A CN 98101858 CN98101858 CN 98101858 CN 98101858 A CN98101858 A CN 98101858A CN 1235989 A CN1235989 A CN 1235989A
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Abstract
The modified propylene composite includes polypropylene 100 portions, rubber-type flexibilizer 10-50 portions, oligomer 5-15 portions, grafted modified polypropylene 5-20 portions and inorganic stuffing 1-15 portions, and is prepared through mixing, melting at 180-220 deg.c for intermingling and pelletizing in extruder or Banbury mixer. It may be coated well and has high-shock resistance and high fluidability, and it may be used in automobile and household appliance manufacture, e. g., producing bumper in automobile.
Description
The present invention relates to a kind of polypropene composition, but particularly relate to a kind of polypropene composition that has good coating and have impact, high workability concurrently.
As everyone knows, acrylic resin has good physicals, all is widely used in every field.As bumper, can adopt the polypropene composition that has ethylene-propylene rubber(EPR) to make.But owing to lack polar group in the polypropylene molecule, it is non-polar material, tack extreme difference with the paint polar materials, therefore when polypropylene articles is painted, usually adopt the superpower paint of polarity, or product surface is handled with ethylene dichloride, plasma body, flame, superpower water etc.But these methods all have certain limitation, as easy contaminate environment, to the massive article treatment facility require high, efficient is low etc.Therefore need a kind ofly itself have high polarity, can and paint the better bonded modified poly propylene composition of polar materials.
In recent years, reported and added the polarity that a kind of polar material improves polypropene composition, thereby but improved its coating performance.As the used polar material of European patent EP O481789A2 is the low-molecular-weight polypropylene of maleic anhydride graft, and the used polar material of European patent EP 0567058A2 is maleic anhydride inoculated polypropylene, maleic anhydride grafted polyethylene or hydroxy-terminated polybutadienes etc.But up to now, the polar material of being reported mostly uses a kind of polar monomer and polyolefine to carry out grafting to obtain.The elastomeric component consistency that plays toughening effect in the polyolefine of this class graft modification and the polypropene composition is relatively poor, thereby causes the performance of polypropene composition not ideal enough.
But the modified poly propylene composition that the purpose of this invention is to provide a kind of application, but it has good coating and has impact, high workability concurrently, its goods can be avoided the environmental degradation problem that causes because of surface treatment in coating process, be specially adapted to the bumper materials, also can in automobile industry, household appliances industry, promote the use of.
Specifically, the invention provides a kind of polypropene composition, it comprises 100 parts of polypropylene (A), 10～50 parts of rubber-type toughner (B), 5～15 parts of oligopolymer (C), 5～20 parts of graft modification polypropylenes (D), 1～15 part of inorganic filler (E), above-mentioned component number average by weight.
As mentioned above, according to the present invention, polypropene composition comprises A, B, C, D, E component.
Polypropylene as the A component can be Co-polypropylene, and used comonomer is an ethene in this Co-polypropylene, and ethylene content is a total polymerization monomeric 15～45%.This polypropylene has good mobility, and its MFR value (melting index) value is 20～40g/10min.Resistance to impact shock is 300～500j/m.Polyacrylic add-on is 100 parts (by weight).
Toughner as the B component can be Ethylene Propylene Terpolymer (EPDM), ethylene-propylene rubber(EPR) (EPR), polyolefin elastomer (POE) or butadiene-styrene block copolymer (SBS) etc., and they give material impact property preferably, and its addition is 10～50 parts (by weight).
The toughner that helps as the C component is oligopolymer, and they can be low-molecular-weight polypropylene or low molecular weight polyethylene.Its addition is 5～15 parts (by weight), does not too lowly have an effect, and too high then erosion-resisting characteristics descends to some extent.
Polar material as the D component is a graft modification polypropylene, can give material higher polarity.The used polar material of the present invention carries out grafting with two kinds of grafted monomer simultaneously by polypropylene and forms.Wherein a kind of grafted monomer is polar monomer (to call the first monomer in the following text), and another kind of grafted monomer is the fragrant olefinic monomer (to call the second monomer in the following text) with conjugated structure.The first monomer is generally vinylformic acid, Hydroxyethyl acrylate, methacrylic acid, hydroxyethyl methylacrylate, Rocryl 410, glycidyl methacrylate or maleic anhydride.The second monomer can be vinylbenzene, 1-vinyl toluene or p-methylstyrene.The addition of this polar material in composition is 5～20 parts (by weight).
The graft modification polypropylene of above-mentioned D component can prepare by the following method: with polypropylene (100 parts), first monomer (2～10 parts), second monomer (0.5～10 part) and initiator (0.2～0.9 part) uniform mixing, then in single screw extrusion machine, twin screw extruder or Banbury mixer after carrying out grafting under 170～220 ℃ extruding pelletization.Described initiator is generally superoxide, as dicumyl peroxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate etc.
As the optional autoxidation calcium of the inorganic filler of E component, magnesium oxide, calcium hydroxide, magnesium hydroxide, aluminium hydroxide, lime carbonate, magnesiumcarbonate, barium sulfate, talcum powder, clay, glass powder, rhombspar, wollastonite etc., be preferably lime carbonate or talcum powder.It gives good bending property of material and thermal characteristics.The addition of inorganic filler is 1～15 part (by weight).The fineness of inorganic filler is 500～2000 orders.Inorganic filler also can adopt conventional coupling agent (as silane compound) to carry out surface treatment.
In addition, if needed, polypropene composition of the present invention can also add auxiliary agent and other component, for example oxidation inhibitor, photostabilizer, coupling agent etc.Wherein, oxidation inhibitor can be DI-tert-butylphenol compounds, ditertbutylparacresol, butylhydroxy anisole, styrenated phenol, butylation octyl group phenol, four [3-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester etc., its addition is generally 0.01～0.5 part; Photostabilizer can be p-octylphenyl salicylate, p-t-butylphenyl salicylate, double acid double phenol A ester, Chimassorb 944 (the hindered amines aggretion type photostabilizer of Italian Chimosa company exploitation, molecular weight) 2500, effectively N content is 4.6%), Goodrite UV-3034 (the hindered amine light stabilizer of U.S. Goodrich company exploitation, molecular weight 338, effectively N content is 8.3%), Tinuvin 622 (the hindered amines aggretion type photostabilizer of Switzerland Giba-Geigy company exploitation, molecular weight＞2000, effectively N content is 4.9%) etc., its addition is generally 0.1～2 part; Coupling agent can be aminopropyl triethoxysilane, vinyltriethoxysilane, amidino groups sulfo-propyl group ortho-siliformic acid, isopropyl triisostearoyl titanate, three oleoyl isopropyl titanates etc., and its addition is generally 0.03～0.1 part.
Under 180～220 ℃ of conditions of processing temperature, with above-mentioned A, B, C, D, five kinds of components of E (and added as required auxiliary agent) but melt blending promptly obtains coating polypropene composition of the present invention.
But the difference of the present composition and other coating composition is used polar material by two kinds of comonomers and polypropylene grafted forming, and percentage of grafting is higher, thereby a small amount of interpolation promptly has higher stripping strength.And because the consistency of polar material of the present invention and rubber components is better, so can with the blend rubber of different varieties, thereby can obtain preferable over-all properties.
Below, with the invention will be further described with Comparative Examples in conjunction with the embodiments.But the present invention is not subjected to the restriction of embodiment content.
Embodiment 1～8 and Comparative Examples 1～2:
Table 1 is listed the addition of above-mentioned each component A～E in each embodiment and Comparative Examples.With each component of A～E melt blending under 180～220 ℃ of conditions of processing temperature, extruding pelletization, but obtain granular coating polypropene composition.Test its performance then according to a conventional method, test result is listed in table 2.
Table 1
| A (polypropylene) umber | B (FPDM) umber | C (PE) umber | D (GPP) umber | E (talcum powder) umber | |
| Embodiment 1 | ????100 | ????35 | ????11 | ????7 | ????3 |
| Embodiment 2 | ????100 | ????40 | ????17 | ????8 | ????12 |
| Embodiment 3 | ????100 | ????45 | ????13 | ????9 | ????7 |
| Embodiment 4 | ????100 | ????17 | ????8 | ????10 | ????12 |
| Embodiment 5 | ????100 | ????23 | ????10 | ????11 | ????14 |
| Embodiment 6 | ????100 | ????27 | ????12 | ????12 | ????8 |
| Embodiment 7 | ????100 | ????30 | ????13 | ????12 | ????14 |
| Embodiment 8 | ????100 | ????42 | ????18 | ????18 | ????6 |
| Comparative Examples 1 | ????100 | ????42 | ????15 | ????12 | ????6 |
| Comparative Examples 2 | ????100 | ????38 | ????17 | ????-- | ????8 |
Annotate: on show among the embodiment 1-8 GPP for and glycidyl methacrylate and styrene-grafted polypropylene; GPP in the Comparative Examples 1 is and acrylic acid-grafted polypropylene; In Comparative Examples 2, do not add GPP.
Table 2
| Tensile strength MPa | Elongation % | Flexural strength MPa | Modulus in flexure MPa | Shock strength J/m | Stripping strength g/cm | ?MFR ?g/10min | |
| Embodiment 1 | ????14.7 | ?570.6 | ????19.3 | ?880.6 | ?621.8 | ?780.9 | ?14.7 |
| Embodiment 2 | ????17.8 | ?621.9 | ????20.5 | ?920.8 | ?546.7 | ?771.6 | ?13.9 |
| Embodiment 3 | ????17.6 | ?687.9 | ????20.4 | ?921.9 | ?629.6 | ?831.7 | ?13.6 |
| Embodiment 4 | ????17.2 | ?529.8 | ????19.3 | ?829.6 | ?517.4 | ?815.4 | ?14.9 |
| Embodiment 5 | ????15.4 | ?549.8 | ????21.4 | ?921.8 | ?517.9 | ?725.4 | ?15.9 |
| Embodiment 6 | ????16.8 | ?528.7 | ????19.6 | ?815.9 | ?587.4 | ?817.9 | ?15.6 |
| Embodiment 7 | ????13.2 | ?521.4 | ????18.4 | ?891.9 | ?517.8 | ?857.8 | ?13.8 |
| Embodiment 8 | ????16.7 | ?517.9 | ????19.2 | ?817.4 | ?587.6 | ?970.8 | ?15.4 |
| Comparative Examples 1 | ????19.7 | ?521.4 | ????21.0 | ?957.0 | ?592.0 | ?618.0 | ?9.4 |
| Comparative Examples 2 | ????20.0 | ?500.0 | ????23.0 | ?1120.0 | ?563.0 | ?460.0 | ?7.8 |
By the result of table 2 as can be seen, the stripping strength of polypropene composition of the present invention obviously is better than Comparative Examples, and other performances also keep well, but is a kind of comparatively ideal coating polypropylene material.
Claims (12)
1. polypropylene composition for coating comprises following component:
100 parts of polypropylene (by weight)
10～50 parts of rubber-type toughner (by weight)
5～15 parts of oligopolymer (by weight)
5～20 parts of graft modification polypropylenes (by weight)
Inorganic filler 1～15 part (by weight) is characterized in that said graft modification polypropylene is while and a kind of polar monomer and a kind of fragrant olefinic monomer grafted polypropylene with conjugated structure.
2. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that in the said graft modification polypropylene that per 100 parts of polypropylene are connected to 2～10 parts of polar monomers and 0.5～10 part of fragrant olefinic monomer (by weight) with conjugated structure.
3. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that said polar monomer is vinylformic acid, Hydroxyethyl acrylate, methacrylic acid, hydroxyethyl methylacrylate, Rocryl 410, glycidyl methacrylate or maleic anhydride.
4. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that said fragrant olefinic monomer with conjugated structure is vinylbenzene, 1-vinyl toluene or p-methylstyrene.
5. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that said polypropylene is a Co-polypropylene, and used comonomer is an ethene in this Co-polypropylene, and vinyl monomer accounts for total polymerization monomeric 15～45%.
6. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that said rubber-type toughner is EPDM, EPR or POE.
7. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that said oligopolymer is low-molecular-weight polypropylene or low molecular weight polyethylene.
8. one kind according to the described polypropylene composition for coating of claim 1, it is characterized in that the optional autoxidation calcium of said inorganic filler, magnesium oxide, calcium hydroxide, magnesium hydroxide, aluminium hydroxide, lime carbonate, magnesiumcarbonate, barium sulfate, talcum powder, clay, glass powder, rhombspar, wollastonite.
9. one kind according to the described polypropylene composition for coating of claim 8, it is characterized in that said inorganic filler is lime carbonate or talcum powder.
10. one kind according to claim 8 or 9 described polypropylene composition for coatings, and the fineness that it is characterized in that said inorganic filler is 500～2000 orders.
11. one kind according to claim 8 or 9 described polypropylene composition for coatings, it is characterized in that inorganic filler carry out surface treatment with coupling agent.
12, a kind of according to the described polypropylene composition for coating of claim 1, be to form through extruding pelletization or Banbury mixer granulation again after with each component melts blend under 180～220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101858 CN1235989A (en) | 1998-05-14 | 1998-05-14 | Polypropylene composition for coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101858 CN1235989A (en) | 1998-05-14 | 1998-05-14 | Polypropylene composition for coating |
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| CN1235989A true CN1235989A (en) | 1999-11-24 |
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| CN 98101858 Pending CN1235989A (en) | 1998-05-14 | 1998-05-14 | Polypropylene composition for coating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079831A (en) * | 2009-11-30 | 2011-06-01 | 现代自动车株式会社 | Thermoplastic polyolefin (TPO)-nanocomposite and usage method thereof |
| CN101717548B (en) * | 2009-11-06 | 2012-07-18 | 金发科技股份有限公司 | High-polarity polypropylene material and application thereof as inner and outer decorative parts of automobile |
| CN110964257A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Ultralow temperature impact resistant polypropylene composition and preparation method thereof |
| CN112280169A (en) * | 2020-10-21 | 2021-01-29 | 重庆会通科技有限公司 | High-polarity polypropylene composite material |
| CN113105696A (en) * | 2021-05-25 | 2021-07-13 | 荔浦纬通新材料有限公司 | Preparation method of polypropylene composite engineering plastic |
-
1998
- 1998-05-14 CN CN 98101858 patent/CN1235989A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717548B (en) * | 2009-11-06 | 2012-07-18 | 金发科技股份有限公司 | High-polarity polypropylene material and application thereof as inner and outer decorative parts of automobile |
| CN102079831A (en) * | 2009-11-30 | 2011-06-01 | 现代自动车株式会社 | Thermoplastic polyolefin (TPO)-nanocomposite and usage method thereof |
| CN102079831B (en) * | 2009-11-30 | 2014-07-16 | 现代自动车株式会社 | Thermoplastic polyolefin (TPO)-nanocomposite and usage method thereof |
| CN110964257A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Ultralow temperature impact resistant polypropylene composition and preparation method thereof |
| CN110964257B (en) * | 2018-09-28 | 2022-07-12 | 中国石油化工股份有限公司 | Ultralow temperature impact resistant polypropylene composition and preparation method thereof |
| CN112280169A (en) * | 2020-10-21 | 2021-01-29 | 重庆会通科技有限公司 | High-polarity polypropylene composite material |
| CN113105696A (en) * | 2021-05-25 | 2021-07-13 | 荔浦纬通新材料有限公司 | Preparation method of polypropylene composite engineering plastic |
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