CN104788872A - Polypropylene resin composition and product thereof - Google Patents
Polypropylene resin composition and product thereof Download PDFInfo
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- CN104788872A CN104788872A CN201410021306.5A CN201410021306A CN104788872A CN 104788872 A CN104788872 A CN 104788872A CN 201410021306 A CN201410021306 A CN 201410021306A CN 104788872 A CN104788872 A CN 104788872A
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Abstract
The invention relates to a polypropylene resin composition and a product thereof. The composition comprises, by weight, (1) 40-90 parts of a component A thermoplastic resin, wherein the component A comprises 20-40 parts of a component A-1 homopolymerized polypropylene and 20-50 parts of a component A-2 polypropylene block copolymer; (2) 10-60 parts of a component B reinforcing filler, wherein the component B comprises 5-30 parts of a component B-1 fibrous filler and 5-30 parts of a component B-2 reinforcing filler excluding the component B-1; (3) 1-20 parts of component C toughener; (4) 0.1-5 parts of a component D nucleating agent; and (5) 0.1-5 parts of a component E deodorant. The polypropylene resin composition is molded so as to produce the product. With the polypropylene resin composition and the product of the present invention, the modified polypropylene with characteristics of high dimensional stability, high fluidity, good rigidity, low linear expansion coefficient, and environmental protection is obtained.
Description
[technical field]
The present invention relates to technical field of polymer materials, be specifically related to a kind of polypropylene resin composite and products thereof.
[background technology]
Polypropylene, English name: Polypropylene(PP), be a kind of thermoplastic resin obtained by propylene polymerization.Polyacrylic advantage is high tensile and rigidity, and under normal temperature, shock strength is high, so be applicable to the in-built product of high rigidity, as fascia.
Fascia great majority adopt the hard instrument panel of direct injection moulding now, and based on environmental protection and the requirement that reduces costs, no longer carry out spray treatment, material selection is extremely harsh, therefore fascia performance need meet following requirement: 1, good dimensional stability, and shrinking percentage will be stablized; 2, excellent shock resistance; 3, low volatility, environmental protection; 4, excellent thermotolerance; 5, Scratch Resistance; 6, good processing characteristics, good fluidity, molding time is short.
But, polypropylene itself exists fragile under low temperature disconnected, linear expansivity is large, dimensional contraction rate is large, creep resistance is poor, the defect of easily buckling deformation, be very disadvantageous to dashboard, and can there is oxidative degradation in polypropylene, can produce the heavier aldehyde of smell, ketone and ester class oxy-compound in the process of oxidative degradation under light, heat effect, harmful, not environmentally.
In view of this, be in fact necessary to develop a kind of polypropylene resin composite, to meet the requirement of good dimensional stability, high workability, good rigidly, low linear expansion coefficient and environmental protection.
[summary of the invention]
Therefore, the object of this invention is to provide a kind of polypropylene resin composite, with the requirement making polypropylene meet good dimensional stability, high workability, good rigidly, low linear expansion coefficient and environmental protection.
In order to achieve the above object, polypropylene resin composite of the present invention, it represents by weight and comprises:
(1) thermoplastic resin and A composition 40 ~ 90 parts, described A composition comprises homo-polypropylene and A-1 composition 20 ~ 40 parts and block copolymerization polypropylene and A-2 composition 20 ~ 50 parts;
(2) strengthen packing material and B component 10 ~ 60 parts, described B component comprises fibrous filler material and B-1 composition 5 ~ 30 parts, and enhancing packing material except B-1 composition and B-2 composition 5 ~ 30 parts;
(3) toughner and C composition 1 ~ 20 part;
(4) Nucleating Agent and D composition 0.1 ~ 5 part;
(5) reodorant and E composition 0.1 ~ 5 part.
Alternatively, the degree of crystallinity of described A-1 composition homo-polypropylene is 50 ~ 60%.
Alternatively, described i.e. A-2 composition block copolymerization polypropylene is the ethene of polypropylene collocation 2 ~ 5%, or the ethene of polypropylene collocation 2 ~ 5% adds ethylene-propylene copolymer again and carries out block modified.
Alternatively, described B-1 composition is hydrous magnesium silicate fibrous filler material, and main body is sheet structure, and relative density is 2.7 ~ 2.8.
Alternatively, described B-2 composition is the filler of glass fibre, wollastonite, carbon system filler or surface coated titanium oxide, zinc oxide, cerium oxide or silicon oxide.
Alternatively, described C composition toughner is polyolefin elastomer.
Alternatively, described polyolefin elastomer is ethylene butylene rubber or Ethylene-octene rubber, and density is 0.865 ~ 0.915, and viscosity is 5 ~ 35.
Alternatively, described D composition Nucleating Agent is phenylformic acid, cinnamic acid, Sorbitol dibenzal or how rice silicon-base oxide.
Alternatively, described E composition reodorant is magnesium oxide or magnesium silicate class mineral.
Alternatively, described polypropylene resin composite also comprises one in stablizer, releasing agent, look material, fire retardant, antiseptic-germicide, dispersion agent, photocatalyst system stain control agent, photochromic agent or its mixture.
In addition, the present invention also provides a kind of product, and it is the product produced after described polypropylene resin composite is shaping.
Alternatively, described product is fascia.
Compared to prior art, polypropylene resin composite of the present invention and products thereof, undertaken composite by two kinds of thermoplastic resins, collocation toughner, and carried out reinforcement by the mineral fibre of special processing and inorganic filling material and increase just, improve the dimensional stability of polypropylene resin composite, mobility and rigidity, reduce linear expansivity, and add reodorant in the composition, removal stink can be decomposed, obtain high-dimensional stability, high workability, good rigidly, low linear expansion coefficient and environmental protection, meet the modified polypropene as product requirements such as fascias.
[embodiment]
Polypropylene resin composite of the present invention, it represents by weight and comprises:
(1) A composition thermoplastic resin 40 ~ 90 parts:
A-1 composition homo-polypropylene 20 ~ 40 parts, the degree of crystallinity of homo-polypropylene own is high, and degree of crystallinity is 50 ~ 60%, rigidity and tough sexual balance good, but obviously not enough in low-temperature flexibility, other thermoplasticss of need arranging in pairs or groups carry out modification;
A-2 composition block copolymerization polypropylene 20 ~ 50 parts, for the ethene of polypropylene collocation 2 ~ 5%, or the ethene of polypropylene collocation 2 ~ 5% adds ethylene-propylene copolymer again and carries out block modified, because of ethene and ethylene-propylene copolymer be in grafting mode on polypropylene, not only low on polyacrylic degree of crystallinity impact, suitable toughness can be kept when low temperature;
(2) B component strengthens packing material 10 ~ 60 parts:
B-1 composition hydrous magnesium silicate fibrous filler material 5 ~ 30 parts, main body is sheet structure, and relative density is 2.7 ~ 2.8, and main body is that sheet structure effectively can reduce linear expansivity, hydrous magnesium silicate has the effect of heterogeneous nucleation to polypropylene, can accelerate polyacrylic crystallization;
B-2 composition strengthens packing material 5 ~ 30 parts, for the enhancing packing material except B-1 composition, described B-2 composition can be glass fibre, wollastonite, carbon system filler, or the filler of the metal oxide such as its surface coated titanium oxide, zinc oxide, cerium oxide or silicon oxide, described carbon system filler is carbon fiber, washing carbon fiber or carbon black;
(3) C composition toughner 1 ~ 20 part:
C composition toughner is polyolefin elastomer, described polyolefin elastomer is ethylene butylene rubber or Ethylene-octene rubber, density is 0.865 ~ 0.915, viscosity is 5 ~ 35, many on the body construction ring structures, make it under low-temperature condition, still a large amount of impact energy of Absorbable rod and do not make material produce fracture;
(4) D composition Nucleating Agent 0.1 ~ 5 part:
D composition Nucleating Agent is phenylformic acid, cinnamic acid, Sorbitol dibenzal or how rice silicon-base oxide, Nucleating Agent can in mixing process, be dispersed in rapidly in resin body, first crystallization in resin melt process of cooling, not only improve degree of crystallinity, even the grain-size after crystallization is reduced, reach the reinforcement of rigidity and toughness further;
(5) E composition reodorant 0.1 ~ 5 part:
E composition reodorant is magnesium oxide or magnesium silicate class mineral, described magnesium silicate class mineral are talcum, serpentine, the mineral such as forsterite, polypropylene is at light, oxidative degradation is there is under heat effect, the heavier aldehyde of smell can be produced in process, ketone, ester class oxy-compound, make polypropylene that degraded generation Ester occur if catalysis oxidation inhibitor can be accelerated containing metal ion in added enhancing packing material, and the crystalline structure of magnesium silicate class mineral is the duplex structure of silicate and the transition type of laminate structure, belong to unique laminate structure, can be good carry out physical adsorption and ion-exchange, play and decompose the heavier aldehyde of smell, ketone, the effect of ester class oxy-compound, reach and remove stink effect,
(6) other additives:
Other additives described can be stablizer, such as phosphorus system stablizer, hindered phenol system oxidation inhibitor, UV light absorber or photostabilizer;
Other additives described also can be releasing agent, productivity when improving shaping, improve the dimensional precision of products formed, the known releasing agents such as acid esters, polyolefin wax, silicoorganic compound, fluorine cpd, paraffin, beeswax can also be coordinated further, above-mentioned special component be engaged in the characteristic not damaging composition when to solve molding shrinkage low, demoulding opposing easily becomes large, the problem of products formed distortion when its result easily causes the demoulding.
Other additives described are dispersion agent, the photocatalyst system stain control agent and photochromic agent etc. of the thermoplastic resin, rubber polymer, other flow ability modifying agent, antiseptic-germicide, whiteruss and so on that can also coordinate beyond A composition.
For having further understanding to object of the present invention, functional effect and technique means, be now described as follows in conjunction with specific embodiments.
Embodiment 1
A-1 composition homo-polypropylene 30 parts;
A-2 composition block copolymerization polypropylene 32 parts;
B-1 composition hydrous magnesium silicate 5 parts;
B-2 composition strengthens packing material 20 parts;
C composition polyolefin elastomer 10 parts;
D composition Nucleating Agent 1 part;
E composition reodorant 1 part;
0.5 part, oxidation inhibitor;
UV light absorber 0.5 part.
Composition each in embodiment 1 is joined high-speed mixer high speed premix; Gained mixture is joined on twin screw extruder and melt extrudes granulation.
Embodiment 2
A-1 composition homo-polypropylene 30 parts;
A-2 composition block copolymerization polypropylene 40 parts;
B-1 composition hydrous magnesium silicate 10 parts;
B-2 composition strengthens packing material 12 parts;
C composition polyolefin elastomer 5 parts;
D composition Nucleating Agent 1 part;
E composition reodorant 1 part;
0.5 part, oxidation inhibitor;
UV light absorber 0.5 part.
Composition each in embodiment 2 is joined high-speed mixer high speed premix; Gained mixture is joined on twin screw extruder and melt extrudes granulation.
Embodiment 3
A-1 composition homo-polypropylene 30 parts;
A-2 composition block copolymerization polypropylene 27 parts;
B-1 composition hydrous magnesium silicate 0 part;
B-2 composition strengthens packing material 15 parts;
C composition polyolefin elastomer 15 parts;
D composition Nucleating Agent 1 part;
E composition reodorant 1 part;
0.5 part, oxidation inhibitor;
UV light absorber 0.5 part.
Composition each in embodiment 3 is joined high-speed mixer high speed premix; Gained mixture is joined on twin screw extruder and melt extrudes granulation.
After each embodiment melt extrudes granulation above, then injection moulding ASTM standard testing batten on injection moulding machine, by the mechanical property of ASTM standard testing resulting materials, wherein test shock strength according to ASTM D256, according to ASTM D638 test tensile strength and extensibility, flexural strength and modulus in flexure is tested according to ASTM D790, according to ASTM D955 testing mould shrinking percentage, heat-drawn wire is tested according to ASTM D648, test mobility MI value according to ASTM D1238, test result is as shown in table 1:
Table 1: each embodiment test result
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Shock strength (23 DEG C of ft-lb/in) | 8.65 | 2.45 | 2.04 |
| Tensile strength (psi) | 3542 | 3395 | 3348 |
| Extensibility (%) | 338.11 | 31.37 | 140.55 |
| Flexural strength (psi) | 5943 | 5921 | 5494 |
| Modulus in flexure (psi) | 323929 | 398988 | 344221 |
| Mold shrinkage (%) | 0.967 | 0.967 | 0.646 |
| Heat-drawn wire (DEG C, 66psi) | 137.3 | 138.6 | 125.8 |
| MI（230℃，2.16Kg） | 21.81 | 33.99 | 23.22 |
Can be drawn by upper table: polypropylene resin composite of the present invention is undertaken composite by two kinds of thermoplastic resins, collocation toughner, and carried out reinforcement by the mineral fibre of special processing and inorganic filling material and increase just, improve the dimensional stability of polypropylene resin composite, mobility and rigidity, reduce linear expansivity, and add reodorant in the composition, removal stink can be decomposed, obtain high-dimensional stability, high workability, good rigidly, low linear expansion coefficient and environmental protection, meet the modified polypropene as product requirements such as fascias.
In addition, the present invention also provides a kind of product, it is the product produced after described high-fluidity high-toughness polypropylene resin composition molding, described product is fascia, and described fascia can meet the requirement of high-dimensional stability, high workability, good rigidly, low linear expansion coefficient and environmental protection.
Claims (12)
1. a polypropylene resin composite, is characterized in that, described polypropylene resin composite represents by weight and comprises:
(1) thermoplastic resin and A composition 40 ~ 90 parts, described A composition comprises homo-polypropylene and A-1 composition 20 ~ 40 parts and block copolymerization polypropylene and A-2 composition 20 ~ 50 parts;
(2) strengthen packing material and B component 10 ~ 60 parts, described B component comprises fibrous filler material and B-1 composition 5 ~ 30 parts, and enhancing packing material except B-1 composition and B-2 composition 5 ~ 30 parts;
(3) toughner and C composition 1 ~ 20 part;
(4) Nucleating Agent and D composition 0.1 ~ 5 part;
(5) reodorant and E composition 0.1 ~ 5 part.
2. polypropylene resin composite according to claim 1, is characterized in that, the degree of crystallinity of described A-1 composition homo-polypropylene is 50 ~ 60%.
3. polypropylene resin composite according to claim 1, is characterized in that, described i.e. A-2 composition block copolymerization polypropylene is the ethene of polypropylene collocation 2 ~ 5%, or the ethene of polypropylene collocation 2 ~ 5% adds ethylene-propylene copolymer again and carries out block modified.
4. polypropylene resin composite according to claim 1, is characterized in that, described B-1 composition is hydrous magnesium silicate fibrous filler material, and main body is sheet structure, and relative density is 2.7 ~ 2.8.
5. polypropylene resin composite according to claim 1, is characterized in that, described B-2 composition is glass fibre, wollastonite, carbon system filler, or the filler of surface coated titanium oxide, zinc oxide, cerium oxide or silicon oxide.
6. polypropylene resin composite according to claim 1, is characterized in that, described C composition toughner is polyolefin elastomer.
7. polypropylene resin composite according to claim 6, is characterized in that, described polyolefin elastomer is ethylene butylene rubber or Ethylene-octene rubber, and density is 0.865 ~ 0.915, and viscosity is 5 ~ 35.
8. polypropylene resin composite according to claim 1, is characterized in that, described D composition Nucleating Agent is phenylformic acid, cinnamic acid, Sorbitol dibenzal or how rice silicon-base oxide.
9. polypropylene resin composite according to claim 1, is characterized in that, described E composition reodorant is magnesium oxide or magnesium silicate class mineral.
10. polypropylene resin composite according to claim 1, it is characterized in that, described polypropylene resin composite also comprises one in stablizer, releasing agent, look material, fire retardant, antiseptic-germicide, dispersion agent, photocatalyst system stain control agent, photochromic agent or its mixture.
11. 1 kinds of products, is characterized in that, the product of described product for producing after the polypropylene resin composite according to any one of described claim 1 to 10 is shaping.
12. products according to claim 11, is characterized in that, described product is fascia.
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| CN201410021306.5A CN104788872A (en) | 2014-01-17 | 2014-01-17 | Polypropylene resin composition and product thereof |
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| CN201410021306.5A CN104788872A (en) | 2014-01-17 | 2014-01-17 | Polypropylene resin composition and product thereof |
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Cited By (3)
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| CN107474416A (en) * | 2017-08-29 | 2017-12-15 | 阜南县鲲鹏塑业科技有限公司 | A kind of preparation technology of mahjong machine plastic casing |
| CN107955257A (en) * | 2016-10-18 | 2018-04-24 | 丹阳市丹力展览用品有限公司 | One kind exhibition discoloration thick china |
| CN115093606A (en) * | 2022-06-16 | 2022-09-23 | 山东长泽新材料科技有限公司 | Beta-crystal form polypropylene nucleating agent and preparation method thereof |
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| CN115093606A (en) * | 2022-06-16 | 2022-09-23 | 山东长泽新材料科技有限公司 | Beta-crystal form polypropylene nucleating agent and preparation method thereof |
| CN115093606B (en) * | 2022-06-16 | 2023-01-06 | 山东长泽新材料科技有限公司 | Beta-crystal form polypropylene nucleating agent and preparation method thereof |
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Application publication date: 20150722 |