CN103242586B - Low-temperature impact-resistant and low stress whitening-resistant long glass fiber reinforced polypropylene material, and preparation method and application thereof - Google Patents
Low-temperature impact-resistant and low stress whitening-resistant long glass fiber reinforced polypropylene material, and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a low-temperature impact-resistant and low stress whitening-resistant long glass fiber reinforced polypropylene material, comprising, by weight, 10%-80% of long glass fiber reinforced polypropylene masterbatches and 20% -90% of low-temperature impact-resistant and low stress whitening-resistant masterbatches, wherein the long glass fiber reinforced polypropylene masterbatches comprise, by weight, 0%-80% of co-polypropylene, 0%-80% of homo-polypropylene, 10%-60% of glass fibers, 1%-10% of grafted polypropylene, 0.1%-2% of an antioxidant and 0.2-2% of a processing agent; the low-temperature impact-resistant and low stress whitening-resistant masterbatches comprise, by weight, 50%-95% of co-polypropylene, 0-30% of a grafted elastomer, 0-20% of a brominated flame retardant, 0.1%-2% of an antioxidant and 0.2-5% of a processing agent. The polypropylene material prepared by the method improves the characteristic of low-temperature impact resistance and reduce generation of stress whitening. A finished product prepared by the material has good drop impact resistance, and can be used for workpieces such as packing cases or electric tools, etc.
Description
Technical field
The present invention relates to a kind of enhancing modified polypropylene material, particularly a kind of low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials and its preparation method and application.
Background technology
Acrylic resin (PP) is a kind of broad-spectrum general-purpose plastics, be polymerized obtained by propylene monomer, the advantage of acrylic resin is that density is low, low price, and has excellent chemical resistance, preferably mechanical property, good moulding processability.As typical crystalline materials, its fusing point is at about 165 DEG C, and add glass fibre to after its enhancing, its mechanical property can increase substantially, and can be used as the structural part of household electrical appliance, vehicle material or tool industry.
Long glass fiber-reinforced polypropylene materials in actual applications can to mould Dai Gang and to replace enhancement engineering plastics, meet the field service requirementss such as small-arms tr, automotive field, household electrical appliances, but need the row of high strength and high impact-resistant demand for power tool or packaging industry, the stress whitening phenomenon of cold temperature impact difference and material constrains the use by Reinforced Polypropylene material, can not meet the needs of product.
Chinese patent 200610025811 discloses a kind of mineral-filled proof stress and turns white and stress cracking polypropylene material, comprise Co-polypropylene, homo-polypropylene, elastomerics, calcium carbonate and talcum powder, its advantage is that modulus has more than 1300Mpa when maintenance shock strength, and overall target reaches the requirement of automobile industry end of door plate material.
Chinese patent 200810203878.X discloses a kind of halogen-free flame retardant polypropylene composite material, is made up of: polypropylene 82.5 ~ 12 the following raw material with parts by weight; Thermo-stabilizer 0.3 ~ 2; Processing aid 0.2 ~ 1; Toughner 1 ~ 10; Fire retardant 10 ~ 40; Glass compatilizer 1 ~ 5 and glass fibre 5 ~ 30.Its advantage is to have excellent flame-retarding characteristic and good over-all properties.
Chinese patent 1380890A and 1435313A discloses a kind of long glass fiber-reinforced polypropylene materials, be characterized in the length being kept glass fibre by the matrix resin that suitable forming method is relatively low with mixing viscosity largely, obtain the molding compared with high bending strength and high impact.
The defect of above prior art has only paid close attention to stabilizing and increasing of the mechanical property at initial stage to material, do not relate to the cold property of material, and general product also has requirement of strength in chilling process, household electrical appliances product, power tool and packing articles have under cryogenic and fall and impact requirement, product is sent out under external force and is produced crazing absorption energy, and crazing region is turn white in the condition of surface of macroscopic view, affect the outward appearance of product, and selective enhancement class material is to the mechanical property particularly tensile strength of normal temperature and low temperature, flexural strength and shock strength require also higher, common packing material does not reach requirement.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials, under the prerequisite of the mechanical property close to engineering plastics keeping material routine, improve the low-temperature impact property of product and reduce the generation of stress whitening.
Another object of the present invention is the preparation method providing above-mentioned low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials.
The present invention is achieved by the following technical solutions:
A kind of low-temperature impact-resistant, low-stress turn white long glass fiber-reinforced polypropylene materials, by weight percentage, comprise following component:
Long glass fiber-reinforced polypropylene master batch 10% ~ 80%
Low-temperature impact-resistant, low-stress turn white master batch 20% ~ 90%;
Wherein, described long glass fiber-reinforced polypropylene master batch comprises the component of following weight per-cent:
Co-polypropylene 0% ~ 80%, homo-polypropylene 0 ~ 80%, glass 10% ~ 60%, graft polypropylene 1% ~ 10%, oxidation inhibitor 0.1% ~ 2%, processing aid 0.2% ~ 2%;
Described low-temperature impact-resistant, the low-stress master batch that turns white comprises the component of following weight per-cent:
Co-polypropylene 50% ~ 95%, grafted elastomeric 0 ~ 30%, bromide fire retardant 0 ~ 20%, oxidation inhibitor 0.1% ~ 2%, processing aid 0.2% ~ 5%.
The particle length of described long glass fiber-reinforced polypropylene master batch is 6-25mm; The turn white particle length of master batch of described low-temperature impact-resistant, low-stress is 6-25mm.
Described Co-polypropylene melt flow rate (MFR) is 20-1000g/10min; The melt flow rate (MFR) of described homo-polypropylene is 20-1000g/10min.
Described glass is alkali-free continuous glass fibre, and Fibre diameter is 11-24 μm.
Graft polypropylene of the present invention is homemade, and by toxilic acid, methylene-succinic acid, vinylformic acid, maleic anhydride, glycidyl acrylate and polypropylene graftedly to form, percentage of grafting is 0.3-1.2%.
Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, irgasfos 168, oxidation inhibitor 1098, oxidation inhibitor 1970, oxidation inhibitor PS802, oxidation inhibitor 627, oxidation inhibitor 445, oxidation inhibitor DLTDP, oxidation inhibitor STDP.
Described processing aid is the mixture of one or more of stearic acid, butyl stearate, erucicamide, ethylene bis stearamide, stearyl erucamide, polyethylene wax, low-molecular-weight polypropylene.
Grafted elastomeric of the present invention is the mixture of one or more in grafting POE, grafting PE, grafting EPDM.Described grafted elastomeric is homemade, and by forming with grafting such as toxilic acid, methylene-succinic acid, vinylformic acid, maleic anhydride, glycidyl acrylates, percentage of grafting is 0.5-1.5%.
Described bromide fire retardant is the mixture of one or more in TDE, brominated epoxy resin, brominated triazine, brominated Polystyrene, bromination polycarbonate, tetrabromo-bisphenol, eight bromo ether.
Low-temperature impact-resistant of the present invention, the low-stress long glass fiber-reinforced polypropylene materials that turns white can be applicable on household electrical appliances product, power tool or packing articles.
Low-temperature impact-resistant, low-stress turn white the preparation method of long glass fiber-reinforced polypropylene materials, comprise the steps:
The preparation of a, long glass fiber-reinforced polypropylene master batch: Co-polypropylene, homo-polypropylene, graft polypropylene, oxidation inhibitor, processing aid are mixed in a mixer in described ratio, then mixing by forcing machine, by one, there is glass dispersion and resin fully can immerse the dipping die head of glass, glass also enters dipping die head by utility appliance, impregnating dispersion in die head, again by refrigerating unit and pellet device, obtain long glass fiber-reinforced polypropylene master batch;
B, low-temperature impact-resistant, low-stress turn white the preparation of master batch: Co-polypropylene, grafted elastomeric, oxidation inhibitor, processing aid and bromide fire retardant are mixed in a mixer in described ratio, then carry out granulation, obtain low-temperature impact-resistant, low-stress turns white master batch;
C, the above-mentioned long glass fiber-reinforced polypropylene master batch for preparing and low-temperature impact-resistant, low-stress turned white namely the mixing of master batch post-type mixer obtains low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials.
In step a of the present invention, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, stage casing processing temperature is 200 ~ 250 DEG C, back segment processing temperature is 180 ~ 230 DEG C, the temperature of die head is 250 ~ 350 DEG C, glass enters dipping die head by sizing and tension device, in die head, glass disperses and is fully infiltrated by resin under tension force and pressure effect, then by refrigerating unit and pellet device, obtains long glass fiber-reinforced polypropylene master batch.
Co-polypropylene, grafted elastomeric, oxidation inhibitor, processing aid and bromide fire retardant are mixed 3 ~ 5min in described ratio by step b of the present invention in a mixer, then mixing by forcing machine, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, stage casing processing temperature is 200 ~ 250 DEG C, back segment processing temperature is 180 ~ 230 DEG C, again through water-cooled, air-dry rear pelletizing, obtains low-temperature impact-resistant, low-stress turns white master batch.
The present invention compared with prior art, has following beneficial effect:
The present invention coordinates long glass fiber-reinforced polypropylene master batch to carry out modification by the master batch that employing low-temperature impact-resistant, low-stress turn white, under the prerequisite of the mechanical property close to engineering plastics keeping material routine, improve the low-temperature impact property of product and reduce the generation of stress whitening.Long glass fibres strongthener can improve the low-temperature impact property of product, and its low temperature impact strength is compared with normal temperature shock strength and substantially remained unchanged; The Co-polypropylene added and grafted elastomeric can significantly improve its low temperature impact properties and stress whitening; Add bromide fire retardant and can improve the fall strength of briquette of product and proof stress turns white; The resistance to property fallen of the finished product manufactured by material is good, may be used for the relevant product replacing engineering plastics.
Embodiment
Further illustrate the present invention below by embodiment, following examples are the present invention's preferably embodiment, but embodiments of the present invention are not by the restriction of following embodiment.
In following examples and comparative example composite-material formula: Co-polypropylene is that height that Maoming Petrochemical produces melts and refers to Co-polypropylene HHP10; Glass is the continuous glass fibre that megalith produces, diameter 17um; Graft polypropylene is made by oneself, percentage of grafting 0.8%; Grafted elastomeric is made by oneself; The mixture of hindered phenol and phosphoric acid lipid selected by oxidation inhibitor.
Table 1, table 2 are respectively long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress and turn white each component of master batch and content.
Embodiment 1:
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, high low-temperature impact-resistant, low-stress turn white master batch 40%, each component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, toxilic acid graft polypropylene, oxidation inhibitor, processing aid stearic acid; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafted elastomeric POE, oxidation inhibitor, processing aid erucicamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch length of turning white is all 12mm.
Its preparation process is as follows:
A, the preparation of long glass fiber-reinforced polypropylene master batch: by Co-polypropylene, homo-polypropylene, graft polypropylene, oxidation inhibitor, processing aid mixes 3 ~ 5min in a mixer in described ratio, then mixing by forcing machine, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, stage casing processing temperature is 200 ~ 250 DEG C, back segment processing temperature is 180 ~ 230 DEG C, by one, there is glass dispersion after plastics mix and resin fully can immerse the dipping die head of glass, die head temperature is 250 ~ 350 DEG C, glass also enters dipping die head by sizing and tension device, in die head, glass disperses and is fully infiltrated by resin under tension force and pressure effect, again by refrigerating unit and pellet device, obtain long glass fiber-reinforced polypropylene master batch,
B, low-temperature impact-resistant, low-stress turn white the preparation of master batch: Co-polypropylene, grafted elastomeric, oxidation inhibitor, processing aid and bromide fire retardant are mixed 3 ~ 5min in a mixer in described ratio, then mixing by forcing machine, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, stage casing processing temperature is 200 ~ 250 DEG C, back segment processing temperature is 180 ~ 230 DEG C, again through water-cooled, air-dry rear pelletizing, obtains low-temperature impact-resistant, low-stress turns white master batch;
C, the above-mentioned long glass fiber-reinforced polypropylene master batch for preparing and low-temperature impact-resistant, low-stress turned white namely the mixing of master batch post-type mixer obtains low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials.
Embodiment 2
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, low-temperature impact-resistant, low-stress turn white master batch 40%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, acrylic acid-grafted polypropylene, oxidation inhibitor, processing aid butyl stearate; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting EPDM elastomerics, brominated epoxy resin, oxidation inhibitor, processing aid ethylene bis stearamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 3
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, low-temperature impact-resistant, low-stress turn white master batch 40%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, acrylic acid-grafted polypropylene, oxidation inhibitor, processing aid butyl stearate; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting POE elastomerics, brominated Polystyrene, oxidation inhibitor, processing aid ethylene bis stearamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 4
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, low-temperature impact-resistant, low-stress turn white master batch 40%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, maleic anhydride inoculated polypropylene, oxidation inhibitor, processing aid butyl stearate; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting PE elastomerics, brominated triazine, oxidation inhibitor, processing aid ethylene bis stearamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 5
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, low-temperature impact-resistant, low-stress turn white master batch 40%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, maleic anhydride inoculated polypropylene, oxidation inhibitor, processing aid ethylene bis stearamide; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting POE elastomerics, TDE, oxidation inhibitor, processing aid erucicamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 6:
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 60%, low-temperature impact-resistant, low-stress turn white master batch 40%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, homo-polypropylene, glass, toxilic acid graft polypropylene, oxidation inhibitor, processing aid stearic acid; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting POE elastomerics, TDE, oxidation inhibitor, processing aid erucicamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 6mm.
Its preparation process is with embodiment 1.
Embodiment 7
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 20%, low-temperature impact-resistant, low-stress turn white master batch 80%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, homo-polypropylene, glass, acrylic acid-grafted polypropylene, oxidation inhibitor, processing aid butyl stearate; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting POE elastomerics, brominated polycarbonate, oxidation inhibitor, processing aid ethylene bis stearamide; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 8
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 80%, low-temperature impact-resistant, low-stress turn white master batch 20%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, glycidyl acrylate graft polypropylene, oxidation inhibitor, processing aid low-molecular-weight polypropylene; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting PE elastomerics, TDE, oxidation inhibitor, processing aid stearic acid; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 12mm.
Its preparation process is with embodiment 1.
Embodiment 9
Low-temperature impact-resistant described in the present embodiment, low-stress turn white long glass fiber-reinforced polypropylene materials, its compositions in weight percentage is long glass fiber-reinforced polypropylene master batch 50%, low-temperature impact-resistant, low-stress turn white master batch 50%, component wherein in long glass fiber-reinforced polypropylene master batch is made up of following component, and its concrete ratio by mass per-cent is in table 1: Co-polypropylene, glass, maleic anhydride inoculated polypropylene, oxidation inhibitor, processing aid stearyl erucamide; The component that low-temperature impact-resistant, low-stress turn white in master batch is made up of following component, and its concrete ratio by mass per-cent is in table 2: Co-polypropylene, grafting POE elastomerics, brominated epoxy resin, oxidation inhibitor, processing aid stearic acid; Long glass fiber-reinforced polypropylene master batch and low-temperature impact-resistant, low-stress master batch master batch length of turning white is all 18mm.
Its preparation process is with embodiment 1.
Comparative example 1
A kind of long glass fiber-reinforced polypropylene materials is made up of the component of following weight per-cent: long glass fiber-reinforced polypropylene master batch 60%, acrylic resin 40%, wherein long glass fiber-reinforced polypropylene master batch is made up of following weight percent composition: homo-polypropylene 44%, glass 50%, graft polypropylene 5%, oxidation inhibitor 0.5%, processing aid 0.5%.
Its preparation process is as follows:
A, the preparation of long glass fiber-reinforced polypropylene master batch: by Co-polypropylene, homo-polypropylene, graft polypropylene, oxidation inhibitor, processing aid mixes 3 ~ 5min in a mixer in described ratio, then mixing by forcing machine, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, stage casing processing temperature is 200 ~ 250 DEG C, back segment processing temperature is 180 ~ 230 DEG C, by one, there is glass dispersion after plastics mix and resin fully can immerse the dipping die head of glass, die head temperature is 250 ~ 350 DEG C, glass enters dipping die head by sizing and tension device, in die head, glass disperses and is fully infiltrated by resin under tension force and pressure effect, again by refrigerating unit and pellet device, obtain long glass fiber-reinforced polypropylene master batch,
B, the above-mentioned long glass fiber-reinforced polypropylene master batch for preparing and acrylic resin post-type mixer are mixed and obtain product.
Comparative example 2
A kind of fiber glass reinforced polypropylene material is made up of the component of following weight per-cent: Co-polypropylene 59%, glass 30%, graft polypropylene 5%, grafting POE elastomerics 5%, oxidation inhibitor 0.5%, processing aid 0.5%.
Its preparation process is as follows: except glass, after other resin and auxiliary agent mix 3 ~ 5min in a mixer, accurately fed by weighing balance in forcing machine front portion, glass is fed measuring apparatus by side and is added in portion in an extruder, forcing machine leading portion processing temperature is 160 ~ 230 DEG C, and stage casing processing temperature is 200 ~ 250 DEG C, and back segment processing temperature is 180 ~ 230 DEG C, again through water-cooled, namely air-dry rear pelletizing obtains product.
Comparative example 3
A kind of fiber glass reinforced polypropylene material is made up of the component of following weight per-cent: Co-polypropylene 44%, glass 30%, graft polypropylene 5%, grafting POE elastomerics 5%, TDE 15%, oxidation inhibitor 0.5%, processing aid 0.5%.
Its preparation process is with comparative example 2.
The shock resistance of matrix material is characterized by two kinds of methods, a kind of is lack product shock strength by the notched Izod impact strength of test material, low temperature to characterize, another kind is the square plate by material being made 150mm*150mm*3mm, square plate is lived by upholder frame, with the ball of 0.5KG from the different height freely falling body side of striking plates, how much highly there is crackle in the side's of observation plate, and judge that surface stress turns white the degree occurred, stress whitening by by well to difference be 5 grades: without, slight, fewer, comparatively serious and seriously.
To embodiment 1-9 and comparative example 1-3 carry out notched Izod impact strength, low temperature notched shock strength and normal temperature and low temperature its test result of Falling ball impact strength in Table 3-4.
The component of long glass fiber-reinforced polypropylene master batch and content in table 1 embodiment 1-9
Low-temperature impact-resistant in table 2 embodiment 1-9, low-stress turn white the component of master batch and content
The performance test results of table 3 embodiment 1-6
The performance test results of table 4 embodiment 7-9 and comparative example 1-3
From the measurement result to each embodiment and comparative example, the low temperature notched shock strength of each embodiment and Falling ball impact strength are all higher than comparative example, and stress whitening is better than comparative example.
Claims (10)
1. low-temperature impact-resistant, low-stress turn white a long glass fiber-reinforced polypropylene materials, it is characterized in that: by weight percentage, comprise following component:
Long glass fiber-reinforced polypropylene master batch 10% ~ 80%
Low-temperature impact-resistant, low-stress turn white master batch 20% ~ 90%;
Wherein, described long glass fiber-reinforced polypropylene master batch comprises the component of following weight per-cent:
Co-polypropylene 8% ~ 80%, homo-polypropylene 0 ~ 80%, glass 10% ~ 60%, graft polypropylene 1% ~ 10%, oxidation inhibitor 0.1% ~ 2%, processing aid 0.2% ~ 2%;
Described low-temperature impact-resistant, the low-stress master batch that turns white is made up of the component of following weight per-cent:
Co-polypropylene 50% ~ 94%, grafted elastomeric or grafting PE 0 ~ 30%, bromide fire retardant 5 ~ 20%, oxidation inhibitor 0.1% ~ 2%, processing aid 0.2% ~ 5%.
2. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that: the particle length of described long glass fiber-reinforced polypropylene master batch is 6-25mm; The turn white particle length of master batch of described low-temperature impact-resistant, low-stress is 6-25mm.
3. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described Co-polypropylene melt flow rate (MFR) is 20-1000g/10min; The melt flow rate (MFR) of described homo-polypropylene is 20-1000g/10min.
4. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described glass is alkali-free continuous glass fibre, and Fibre diameter is 11-24 μm.
5. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described graft polypropylene is by toxilic acid, methylene-succinic acid, vinylformic acid, maleic anhydride, glycidyl acrylate and polypropylene graftedly form, and percentage of grafting is 0.3-1.2%.
6. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described processing aid is the mixture of one or more of stearic acid, butyl stearate, erucicamide, ethylene bis stearamide, stearyl erucamide, polyethylene wax, low-molecular-weight polypropylene; Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, irgasfos 168, oxidation inhibitor 1098, oxidation inhibitor 1970, oxidation inhibitor PS802, oxidation inhibitor 627, oxidation inhibitor 445, oxidation inhibitor DLTDP, oxidation inhibitor STDP.
7. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described grafted elastomeric is the mixture of one or more in grafting POE, grafting EPDM.
8. to turn white long glass fiber-reinforced polypropylene materials according to the low-temperature impact-resistant described in claim 1, low-stress, it is characterized in that, described bromide fire retardant is the mixture of one or more in TDE, brominated epoxy resin, brominated triazine, brominated Polystyrene, bromination polycarbonate, tetrabromo-bisphenol, eight bromo ether.
9. the low-temperature impact-resistant described in any one of claim 1 ~ 8, low-stress turn white the preparation method of long glass fiber-reinforced polypropylene materials, it is characterized in that, comprise the steps:
The preparation of a, long glass fiber-reinforced polypropylene master batch: Co-polypropylene, homo-polypropylene, graft polypropylene, oxidation inhibitor, processing aid are mixed in a mixer in described ratio, then mixing by forcing machine, by one, there is glass dispersion and resin fully can immerse the dipping die head of glass, glass also enters dipping die head by utility appliance, impregnating dispersion in die head, again by refrigerating unit and pellet device, obtain long glass fiber-reinforced polypropylene master batch;
B, low-temperature impact-resistant, low-stress turn white the preparation of master batch: Co-polypropylene, grafted elastomeric or grafting PE, oxidation inhibitor, processing aid and bromide fire retardant are mixed in a mixer in described ratio, then carry out granulation, obtain low-temperature impact-resistant, low-stress turns white master batch;
C, the above-mentioned long glass fiber-reinforced polypropylene master batch for preparing and low-temperature impact-resistant, low-stress turned white namely the mixing of master batch post-type mixer obtains low-temperature impact-resistant, low-stress turns white long glass fiber-reinforced polypropylene materials.
10. the low-temperature impact-resistant described in any one of claim 1 ~ 8, low-stress turn white the application of long glass fiber-reinforced polypropylene materials on household electrical appliances product, power tool or packing articles.
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|---|---|---|---|---|
| KR101459951B1 (en) | 2013-09-27 | 2014-11-07 | 현대자동차주식회사 | Compositions of polypropylene having excellent tectility and scratch resistance |
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