CN104086896A - Low-shrinkage high-weatherproofness polypropylene composite material for shell of electric tool - Google Patents
Low-shrinkage high-weatherproofness polypropylene composite material for shell of electric tool Download PDFInfo
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- CN104086896A CN104086896A CN201410314248.5A CN201410314248A CN104086896A CN 104086896 A CN104086896 A CN 104086896A CN 201410314248 A CN201410314248 A CN 201410314248A CN 104086896 A CN104086896 A CN 104086896A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a low-shrinkage high-weatherproofness polypropylene composite material for a shell of an electric tool. The polypropylene composite material is prepared from the following components in parts by weight: 45 to 85 parts of co-polypropylene, 10 to 50 parts of enhancer, 1 to 15 parts of flexibilizer, 0.1 to 0.5 part of coupling agent, 0.1 to 0.5 part of antioxidant, 0.1 to 0.5 part of light stabilizer and 0 to 5 parts of other additives. According to the polypropylene composite material disclosed by the invention, the shrinkage rate of a matrix resin is decreased, so that the dimensional stability of the material is improved; meanwhile, the dimensional stability of the material is improved, so that the polypropylene composite material is capable of replacing ASA (Acrylonitrile Styrene Acrylate Copolymer) to be used for producing the shell of the electric tool.
Description
Technical field
The invention belongs to technical field of polymer composite materials, be specifically related to a kind of low contraction for electric power tool shell, high weather-proof polypropylene matrix material.
Technical background
Along with the fast development of lithium battery technology, thereby the electrical capacity of battery is constantly promoted, price reduces gradually, and solid foundation has been laid in this fast development that is power tool.In order to meet safe, portable, the durable market demand of power tool, structure design is flexible, color and luster is attractive in appearance, durable, cheap high-molecular material A SA resin progressively become the first-selection of alternative metals shell.ASA resin is formed by rubber copolymerized the closing of vinylbenzene, vinyl cyanide and acryl, has that fillet weld strength is high, tint permanence good, a rich color, the weather-proof feature such as good, can be used for the appearance component such as the shell of electric power tool shell, electronic apparatus.But ASA is easily scratched, temperature tolerance is lower, and the restriction of the factor such as material cost height, and power tool is as precision instrument, and its dimensional stability, surperficial damage resistant, weather resistance to sheating material has higher requirement.Therefore need high its use in some fields of material substitution of cost performance that active development is new.
Polypropylene (PP) material due to little, the heat-resisting excellence of density, counter-bending fatigability is good and price is low, it is of many uses.Limit its application aspect electric power tool shell but the degree of crystallinity of PP is higher, poor dimensional stability, weather resistance are low.In order to expand the application in this field of PP, low, the weather-proof polypropylene composite material lasting, dimensional stabilizing of active development shrinking percentage becomes a problem demanding prompt solution.But such polypropylene composite material is at home still in space state at present.
Chinese invention patent CN 102391575 A have announced polypropylene alloy material that a kind of molding shrinkage is low and preparation method thereof.This patent adopts the activator of alkali magnesium sulfate crystal whisker as polypropylene dimensional stability, has really reduced the shrinking percentage of material, has improved the dimensional stability of material.But in the course of processing, must keep the length-to-diameter ratio of whisker, the process window of material is narrower like this, technique controlling difficulty is higher, the poor stability of product, simultaneously because the existence of alkali magnesium sulfate, the weathering resistance of this material is very low, and toughness of material is poor simultaneously, can not meet the requirement of power tool to material;
Chinese invention patent CN 102250413 A have announced modified polypropylene composite material of a kind of high gloss, low contraction and preparation method thereof.This patent adopts the vinylbenzene of low contraction and the polypropylene composite material of the low contraction of polypropene blended preparation, and the shrinking percentage of this material is improved.But because vinylbenzene and PP textural difference are larger, consistency is lower, and layering easily appears in bi-material, causes product stability poor, because of PP and cinnamic weathering resistance, you are all poor simultaneously, so the weather resistance of this matrix material is also lower.
Summary of the invention
The present invention is directed to problems of the prior art, provide a kind of alternative ASA of industrialized mass production that is applicable to come for the low contraction of electric power tool shell, high weather-proof polypropylene matrix material.
In order to achieve the above object, the present invention realizes by following technical proposal:
For the low contraction of electric power tool shell, a high weather-proof polypropylene matrix material, be prepared from by weight by following component: Co-polypropylene 45-85 part, toughener 10-50 part, toughner 1-15 part, coupling agent 0.1-0.5 part, oxidation inhibitor 0.1-0.5 part, the steady agent 0.1-0.5 of light, other auxiliary agents 0-5 part.
Further, described Co-polypropylene is that melting index under 230 DEG C/2.16Kg condition is greater than 10g/10min, is that in 50mm/min situation, tensile strength is greater than 19MPa, socle girder notched Izod impact strength 8KJ/m at draw speed
2.
Described toughener is at least one in talcum powder, calcium carbonate, alkali-free glass fiber.
The particle diameter of described talcum powder and calcium carbonate is for being greater than 800 orders, and the diameter of alkali-free glass fiber is 10-16um.
Described toughner is terpolymer EP rubber (EPDM), POE (POE) or cis-1,4-polybutadiene rubber (BR).
Described oxidation inhibitor is four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) at least one in the two stearyl alcohol esters (oxidation inhibitor DSTDP) of pentaerythritol ester (antioxidant 1010), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168), thio-2 acid.
The preferred γ-aminopropyl triethoxysilane of described coupling agent (KH550) or titanate coupling agent sec.-propyl three (dioctylphyrophosphoric acid acyloxy).
The steady agent of described light is the steady agent of the composite light of hindered amines, preferably the steady agent V703 of light of Qing Te company of the U.S..
Other described auxiliary agent comprises at least one in lubricant, compatilizer; The preferred N of described lubricant, N '-ethylene bis stearamide (EBS) or silicone powder, the preferred maleic anhydride inoculated polypropylene of described compatilizer (PP-G) or POE grafted maleic anhydride (POE-G).
The present invention compared with prior art, has the following advantages:
1, the present invention utilize Co-polypropylene and toughner composite, reduced the shrinking percentage of matrix resin, improved the dimensional stability of material; When utilizing toughener to improve the strength of materials simultaneously, further improve the dimensional stability of material, thereby made the polypropylene composite material after modification can substitute ASA.
2, low contraction, the dimensional stabilizing polypropylene composite material that prepared by the present invention have excellent weather resistance, be more than the twice of ASA outdoor duration of service, there is good resistance toheat simultaneously, compared with 80 DEG C of ASA life-time service ceiling temperatures, this matrix material can use for a long time in 100 DEG C of environment.
3, the low contraction that prepared by the present invention, high weather-proof polypropylene matrix material, complete processing is controlled, and product performance are stable, and material cost is only the half of ASA, and alternative ASA is as the shell of power tool.
embodiment:
Provide embodiment below so that the present invention is specifically described; be necessary to be pointed out that at this following examples are only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that the those of ordinary skill in this field is made the present invention according to this embodiment or adjustment still belong to protection scope of the present invention.
An ordinary method for the low contraction of electric power tool shell, the preparation method of high weather-proof polypropylene matrix material, mainly: weigh by weight polypropylene, toughener, toughner, oxidation inhibitor, coupling agent, the steady agent of light and add high-speed mixer and mixing even together with other auxiliary agents; Then by the mixture mixing granulation after forcing machine melt extrudes.Wherein the temperature of the temperature of forcing machine from feed opening to die orifice is respectively 180 DEG C, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, rotating speed are 50-80rpm, and vacuum tightness is 0.1-0.5MPa.
embodiment 1
Taking respectively by weight ratio 45 parts of dry Co-polypropylene K7926 (Shanghai match section), 20 parts, calcium carbonate, talcum powder 30 powder, antioxidant 1010 and be 0.1 part, oxidation inhibitor DSTDP and be 0.1 part, toughner POE is 5 parts, Lubricate EBS (N, N '-ethylene bis stearamide) 0.2 part, coupling agent KH550 be that 0.5 part, the steady agent V703 of light are that 0.1 part, compatilizer PP-G are 2 points, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 50rpm, and vacuum tightness is 0.3MPa.
embodiment 2
Taking respectively by weight ratio dry Co-polypropylene K9016 (Yanshan Petrochemical) is 50 parts, alkali-free glass fiber ER14-1000-988A is 20 parts, talcum powder 25 powder, antioxidant 1010 is 0.1 part, toughner EPDM is 8 parts, oxidation inhibitor DSTDP is 0.1 part, irgasfos 168 is 0.2, Lubricate EBS (N, N '-ethylene bis stearamide) 0.2 part, the steady agent V703 of light is 0.2 part, coupling agent KH550 is 0.3 part, compatilizer PP-G is 2 points, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine, pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.5MPa.
embodiment 3
Taking respectively by weight ratio dry Co-polypropylene YPJ1215C (raising sub-petrochemical industry) is 55 parts, alkali-free glass fiber ER14-1000-988A is 15 parts, talcum powder 30 powder, antioxidant 1010 is 0.2 part, oxidation inhibitor DSTDP is 0.1 part, irgasfos 168 is 0.2, the steady agent V703 of light is 0.3 part, toughner BR is 6 parts, Lubricate EBS (N, N '-ethylene bis stearamide) 0.2 part, coupling agent KH550 is 0.3 part, compatilizer PP-G is 2 points, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine, pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.5MPa.
embodiment 4
Taking respectively by weight ratio dry Co-polypropylene K9015 (Yanshan Petrochemical) and be 65 parts, 35 parts of talcum powder, antioxidant 1010 and be 0.1 part, irgasfos 168 and be 0.1 part, toughner POE and be 1 part, the steady agent V703 of light is 0.4 part, Lubricate EBS (N, N '-ethylene bis stearamide) 0.2 part, coupling agent titanate coupling agent sec.-propyl three (dioctylphyrophosphoric acid acyloxy) be 0.2 part, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.2MPa.
embodiment 5
Taking respectively by weight ratio dry Co-polypropylene K9015 (Yanshan Petrochemical) and be 70 parts, 15 parts of talcum powder, antioxidant 1010 and be 0.1 part, 0.4 part, lubricant silicone powder, the steady agent V703 of light and be 0.5 part, toughner POE and be 15 parts, coupling agent KH550 is 0.2 part, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.1MPa.
embodiment 6
Taking respectively by weight ratio dry Co-polypropylene EA5075 (Korea S PolyMirae) and be 75 parts, 20 parts of talcum powder, antioxidant 1010 and be 0.1 part, irgasfos 168 is 0.3 part, Lubricate EBS (N, N '-ethylene bis stearamide) 0.5 part, toughner POE be that 3 parts, coupling agent KH550 are 0.2 part, the steady agent V703 of light is 0.1 part, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.1MPa.
embodiment 7
Taking respectively by weight ratio dry Co-polypropylene EP200R (Korea S great Lin) and be 85 parts, 10 parts of talcum powder, the steady agent V703 of light and be 0.2 part, antioxidant 1010 and be 0.1 part, irgasfos 168 and be 0.3 part, toughner EPDM and be 5 parts, coupling agent KH550 and be 0.2 part, compatilizer POE grafted maleic anhydride (POE-G) is 5 parts, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 80rpm, and vacuum tightness is 0.1MPa.
embodiment 8
Taking respectively by weight ratio dry Co-polypropylene K9016 (Yanshan Petrochemical) and be 70 parts, 10 parts of talcum powder, alkali-free glass fiber ER14-1000-988A and be 10 parts, toughner and be 13 parts, antioxidant 1010 and be 0.1 part, irgasfos 168 and be 0.3 part, coupling agent KH550 and be 0.1 part, the steady agent V703 of light and be 0.3 part, compatilizer maleic anhydride inoculated polypropylene (PP-G) is 5 parts, above-mentioned materials is added in high-speed mixer and mixed, then the mixing mixing is added in forcing machine to pelletizing after water-cooled.Wherein, the processing temperature of forcing machine is followed successively by 180 DEG C by feed opening to die orifice, and 190 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, engine speed are 60rpm, and vacuum tightness is 0.1MPa.
Sample in above-described embodiment 1-8 is injection molded into GB batten according to unified technique, according to testing standard listed in table 1 and condition, it is carried out respectively to measuring mechanical property, test data is as shown in table 2 below.
Table 1: performance test standard and the condition of matrix material
| Test event | Unit | Test method |
| Tensile strength | Mpa | GB/T1040.1 |
| Elongation at break | % | GB/T1040.1 |
| Simply supported beam notched Izod impact strength (23 DEG C) | KJ/m 2 | GB/T 1043.1 |
| Molten finger | g/10min | GB/T3682 |
| Shrinking percentage | % | GB/T 17037.4 |
| Xenon lamp aging | △E | GB/T16422.2 |
The performance test results of each matrix material in table 2: embodiment 1 ~ 8
| Embodiment | Tensile strength/Mpa | Elongation at break % | Notched Izod impact strength KJ/m2 | 500h,△E | The molten g/10min that refers to | Shrinking percentage % |
| Embodiment 1 | 20 | 20 | 8 | 0.5 | 15 | 0.6/0.5 |
| Embodiment 2 | 30 | 5 | 8 | 0.6 | 6 | 0.5/0.6 |
| Embodiment 3 | 30 | 7 | 15 | 0.7 | 7 | 0.5/0.6 |
| Embodiment 4 | 15 | 50 | 30 | 0.3 | 12 | 0.5/0.5 |
| Embodiment 5 | 16 | 50 | 25 | 0.7 | 13 | 0.5/0.6 |
| Embodiment 6 | 22 | 45 | 35 | 0.6 | 40 | 0.6/0.6 |
| Embodiment 7 | 16 | 100 | 50 | 0.4 | 18 | 0.6/0.5 |
| Embodiment 8 | 17 | 80 | 30 | 0.6 | 12 | 0.5/0.6 |
Data from table 2 can be found out, along with the difference of the polypropylene trade mark, though molten finger and the notched Izod impact strength of material change, but the shrinking percentage of material is all between 0.5-0.6, the dimensional stability that shows material is higher, and the shrinking percentage of this shrinking percentage and ASA is suitable simultaneously.Therefore the polypropylene composite material that, prepared by the present invention does not have dimensional problem to substitute ASA as producing the shell product of power tool.
In addition, aberration in analytical table 2 after xenon lamp accelerated deterioration in 500 hours, the value of chromatism that can find out xenon lamp aging front and back model is all less than 1, shows that polypropylene composite material prepared by the present invention has good weather resistance, can well meet the requirement of the weather-proof use in open air of electric power tool shell.
To sum up embodiment data analysis can draw, low contraction of the present invention, high weather-proof polypropylene composite material can replace ASA as the shell product of producing power tool, for meeting outdoor ultraviolet ageing requirement.
Claims (9)
1. for the low contraction of electric power tool shell, a high weather-proof polypropylene matrix material, it is characterized in that: be prepared from by weight by following component: Co-polypropylene 45-85 part, toughener 10-50 part, toughner 1-15 part, coupling agent 0.1-0.5 part, oxidation inhibitor 0.1-0.5 part, the steady agent 0.1-0.5 of light, other auxiliary agents 0-5 part.
2. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: described Co-polypropylene is that the melting index under 230 DEG C/2.16Kg condition is greater than 10g/10min, is that in 50mm/min situation, tensile strength is greater than 19MPa, socle girder notched Izod impact strength 8KJ/m at draw speed
2.
3. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: described toughener is at least one in talcum powder, calcium carbonate, alkali-free glass fiber.
4. the low contraction for electric power tool shell according to claim 3, high weather-proof polypropylene matrix material, is characterized in that: the particle diameter of described talcum powder and calcium carbonate is for being greater than 800 orders, and the diameter of alkali-free glass fiber is 10-16um.
5. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: described toughner is terpolymer EP rubber, POE or cis-1,4-polybutadiene rubber.
6. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, it is characterized in that: described oxidation inhibitor is four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) at least one in the two stearyl alcohol esters of pentaerythritol ester, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, thio-2 acid.
7. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: the preferred γ-aminopropyl triethoxysilane of described coupling agent or titanate coupling agent sec.-propyl three (dioctylphyrophosphoric acid acyloxy).
8. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: the steady agent of described light is the steady agent of the composite light of hindered amines.
9. the low contraction for electric power tool shell according to claim 1, high weather-proof polypropylene matrix material, is characterized in that: other described auxiliary agent comprises at least one in lubricant, compatilizer; Described lubricant is N, N '-ethylene bis stearamide or silicone powder, and described compatilizer is maleic anhydride inoculated polypropylene or POE grafted maleic anhydride.
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| CN105524354A (en) * | 2015-12-30 | 2016-04-27 | 宁波科普特新材料有限公司 | A low-shrinkage low-specific-gravity PP material and a preparing method thereof |
| CN107501746A (en) * | 2016-06-14 | 2017-12-22 | 合肥杰事杰新材料股份有限公司 | A kind of replacement ABS is used for the lower shrinkage of garden instrument, high durable PP composite material and preparation method thereof |
| CN108329599A (en) * | 2017-01-20 | 2018-07-27 | 合肥杰事杰新材料股份有限公司 | A kind of lower shrinkage, high durable PP composite material and preparation method thereof |
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| CN111909449A (en) * | 2020-07-03 | 2020-11-10 | 金发科技股份有限公司 | Environment-friendly polypropylene composition and preparation method thereof |
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