CN102532723A - Polypropylene composition special for automobile bumpers and preparing method thereof - Google Patents
Polypropylene composition special for automobile bumpers and preparing method thereof Download PDFInfo
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- CN102532723A CN102532723A CN2011104466810A CN201110446681A CN102532723A CN 102532723 A CN102532723 A CN 102532723A CN 2011104466810 A CN2011104466810 A CN 2011104466810A CN 201110446681 A CN201110446681 A CN 201110446681A CN 102532723 A CN102532723 A CN 102532723A
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Abstract
The invention discloses a polypropylene composition special for automobile bumpers and a preparing method thereof. The raw material formula of the polypropylene composition special for automobile bumpers is composed of, by weight, 30-50 parts of copolymerization polypropylene, 30-50 parts of copolymerization polypropylene reclaimed materials, 10-30 parts of calcium carbonate, 15-25 parts of flexibilizer, 0.1-0.5 part of antioxidant 1010, 0.1-0.5 part of antioxidant 168, 0.3-0.5 part of uvioresistant agent UV-531 and 0.08-0.1 part of diffusing powder ethylene bis stearamide (EBS). The polypropylene composition special for automobile bumpers can meet basic indexes of the automobile bumpers, has some indexes surpassing the world industrial level, has good characteristics of high rigidity, impact resistance, scratching resistance and low temperature resistance, can resist 95 DEG C high temperature and -30 DEG C low temperature, is solarization resistant and aging resistant, has service life as long as more than 15 years, can be recycled for reconstruction, and is an optimum material capable of protecting environment, being recycled, saving energy and reducing emission.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to the macromolecular material of automobile manufacturing field, be specifically related to the polypropylene dedicated composition and method of making the same of a kind of nerf bar.
Background technology
Vestolen PP 7052 is a kind of common general-purpose plastics, is that propylene monomer is polymerized, and english abbreviation is PP, and this material thermal resistance is poor; Fusing point is 165～175 ℃, and rigidity is low, and impelling strength is low; Hardness is low relatively, and resistance to low temperature is poor, and scratch-proofness can be poor; In the modified plastics field, its rigidity and toughness scratch-proofness lower temperature resistance are difficult to improve simultaneously, can not directly be used in the special-purpose starting material of nerf bar.
Vestolen PP 7052 is according to polymerization method, and molecule segment is arranged and is mainly two big types of COPP, HOPPs, and wherein: COPP PP impelling strength is high, but rigidity is low, notched Izod impact strength 5.0～50.0kg/m
2, modulus in flexure 700～1500mpa; HOPP PP toughness is relatively poor, and rigidity is higher, and notched Izod impact strength is 3.0～5.0KJ/m
2, modulus in flexure 1400～2200MPa.Through contrast, COPP is higher than HOPP, is easier to reach the requirement of doing nerf bar, but discovers that the HB of COPP PP is between 30～60, in the outdoor easy bursting by freezing of severe cold.
Summary of the invention
The objective of the invention is to the deficiency to prior art, a kind of polypropylene dedicated compsn of nerf bar with high rigidity, shock-resistant, damage resistant and low temperature tolerance characteristics is provided.
Another object of the present invention is to provide above-mentioned nerf bar polypropylene dedicated preparation of compositions method.
Above-mentioned purpose of the present invention is achieved through following scheme:
The polypropylene dedicated compsn of a kind of nerf bar, its composition of raw materials is made up of each component of following parts by weight:
30～50 parts of COPPs;
30～50 parts of COPP reworked materials;
10～30 parts in lime carbonate;
15～25 parts of toughner;
0.1～0.5 part of antioxidant 1010;
168 0.1～0.5 part of inhibitor;
0.3～0.5 part of anti UV agent UV-531;
0.08～0.1 part of spread powder EBS.
In the above-mentioned raw materials prescription, COPP adopts the injection grade COPP, is more preferably not to be added with the injection grade COPP of filling raw material and two defective materials.
In the above-mentioned raw materials prescription; The COPP reworked material adopts any COPP reworked material all can; Like COPP defective material, substandard products or recovery article or the like; Preferred injection grade COPP reworked material is more preferably and is not added with the injection grade COPP reworked material of filling raw material and two defective materials.
In the above-mentioned raw materials prescription, lime carbonate mainly plays the effect that increases firm agent and anti-stroke of agent; In order to obtain better product performance, the lime carbonate in the present invention's prescription adopts particle diameter to be less than or equal to 10 microns lime carbonate, and the adding of said lime carbonate can improve the resistance to impact shock and the scratch resistant performance of system greatly.
In the above-mentioned raw materials prescription, toughner adopts polyolefin elastomer (POE), and polyolefin elastomer adopts commercially available anyly all can realize the present invention; The adding of polyolefin elastomer can improve the toughness of system greatly, improves simultaneously and resists cold, and makes polypropene composition of the present invention keep performances intact at-30 ℃.In addition, toughner of the present invention can also adopt the elastomer thermoplastic mixtures of polyhutadiene-1 and butadiene-styrene rubber polyisobutene.No matter be the elastomer thermoplastic mixtures of polyolefin elastomer (POE) or polyhutadiene-1 and butadiene-styrene rubber polyisobutene,
These two kinds all is elastomerics, and daily use also has good toughening effect and with Vestolen PP 7052 the fine consistency that gets arranged, and therefore under the consideration of comprehensive price ratios such as cost, these two kinds of softening agent can be selected to use according to qualifications.
In the above-mentioned raw materials prescription, above-mentioned antioxidant 1010 and inhibitor 168 are the commercially available prod, play the effect of heat resistanceheat resistant, resist oxygen aging in the present invention.
Above-mentioned anti UV agent UV-531 is the commercially available prod, and adding can improve anti-aging, absorbs action of ultraviolet radiation, and in the effect of the sun-proof regression look of outdoor prolongation, it is prolonged stable to reach color.
Above-mentioned spread powder EBS is the commercially available prod, plays effect lubricated, diffusion in the present invention.
The interpolation in prescription of above-mentioned oxidation inhibitor and anti UV agent, it mainly is to play to the daily environment for use of goods, ensures the goods effect in work-ing life; The interpolation of spread powder in the present invention's prescription mainly is to make material in stirring, can disperse more evenly, establishes better processing basis for mixing extruding, thereby prepares more high-quality finished product.
The polypropylene dedicated preparation of compositions method of above-mentioned nerf bar specifically comprises the steps:
According to the prescription consumption; COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed back sending in the twin screw extruder; Behind melting mixing under 190～230 ℃ the temperature; Through the tank cooling, introduce dicing machine and carry out the pelletizing operation, collect pellet and be the polypropylene dedicated compsn of nerf bar of the present invention.
Among the above-mentioned preparation method; COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed, be meant under 650～1300 rev/mins rotating speed COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed; Adopting 650～1300 rev/mins rotating speed to stir, is that then material can cracking too soon if stir because bad if stirring then mixes too slowly.
Among the above-mentioned preparation method, the rotating speed of twin screw extruder is 250～400rPm.
Among the above-mentioned preparation method, it is 190～230 ℃ that melting mixing adopts temperature, is because if the too high meeting of melt temperature causes the polymkeric substance thermolysis, thereby makes polymkeric substance lose due mechanical energy; If the too low polymkeric substance that then can cause of melt temperature is mixing inhomogeneous, thereby might make the polymkeric substance layering lose due function.
Among the above-mentioned preparation method, the melt of being extruded by twin screw extruder is when tank cools off, and used tank temperature is 50～60 ℃; The inventor discovers, expects that then bar is not easy to dicing machine and cuts off if the tank temperature is too high, and to have the long-tail crust to hinder particle attractive in appearance if water temperature is crossed the low particle that then can cause dicing machine to cut out, and the blanking in the time of also might giving injection moulding brings unnecessary puzzlement.
Among the above-mentioned preparation method, the rotating speed of dicing machine is 600～900rpm; The inventor is through discovering, if the dicing machine rotating speed is slow excessively, then pellet can be too loose, if the dicing machine rotating speed is too fast, then pellet can be too little, and therefore, it is suitable that the rotating speed of dicing machine need be adjusted, otherwise all can be to final pellet attractive in appearance influential; To this, the inventor optimizes and revises the rotating speed of dicing machine, and the rotating speed of finally selecting dicing machine is 600～900rpm.
The polypropylene dedicated compsn of above-mentioned preparation gained nerf bar is carried out performance test, and the result finds that the polypropylene dedicated compsn of this nerf bar can satisfy the nerf bar basic index, and the index that has surpasses world's industry level; Compare with the existing polypropene composition that is used to prepare nerf bar; This polypropene composition has high rigidity, shock-resistant, damage resistant and low temperature resistant good characteristic, its tolerance to temperature can reach high temperature resistant 95 ℃ with low temperature resistant-30 ℃, sun-resistant; Anti-aging; Life-span can reach more than 15 years, and also recyclable reproducing is environmental protection, regeneration, energy-conservation, the best materials that reduces discharging.
Compared with prior art, the present invention has following beneficial effect:
1. the inventor is through discovering; Add snappiness that POE can play further enhancing polymkeric substance in the present invention prescription and make it to adapt to low temperature environment work and shock resistance effect such as do not ftracture; And the inventor also discovers; The POE addition is too high in the present invention prescription then can the impact polymer rigidity, and the too low then snappiness of POE addition is not enough, therefore through research the POE addition is optimized;
2. the inventor is through discovering; Add lime carbonate in the present invention's prescription and can play the insufficient effect of the rigidity that remedies COPP, and can satisfy the impact resistance in the daily use of bumper after adding lime carbonate in the prescription, in addition; The inventor also discovers; The too high then polymers flexible property of lime carbonate addition deficiency becomes fragile in the present invention's prescription, and the not enough anti-impact force of too low then rigidity is poor, therefore through research the addition of lime carbonate is optimized;
3. the polypropylene dedicated compsn of nerf bar of the present invention; Each components selection and consumption are through optimizing in its prescription; And corresponding preparation technology parameter is also optimized; Have high rigidity, shock-resistant, damage resistant and low temperature resistant good characteristic thereby obtain polypropene composition, and can satisfy the nerf bar basic index, the index that has surpasses world's industry level; And also recyclable the reproducing of this polypropene composition material itself is environmental protection, regeneration, energy-conservation, the best materials that reduces discharging.
Embodiment
Below in conjunction with specific embodiment the present invention is done description further, but specific embodiment is not done any qualification to the present invention.
Embodiment 1
The polypropylene dedicated compsn of the nerf bar of present embodiment, its composition of raw materials is made up of each component of following parts by weight:
35 parts of COPPs;
30 parts of COPP reworked materials;
15 parts in lime carbonate;
20 parts of polyolefin elastomers;
0.2 part of antioxidant 1010;
168 0.3 parts of inhibitors;
0.3 part of anti UV agent UV-531.
0.08 part of spread powder EBS.
The polypropylene dedicated preparation of compositions method of above-mentioned nerf bar specifically comprises the steps:
According to the prescription consumption; COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed back sending in the twin screw extruder; Behind melting mixing under 190～230 ℃ the temperature; Through the tank cooling, introduce dicing machine and carry out the pelletizing operation, collect pellet and be the polypropylene dedicated compsn of nerf bar of the present invention.
Among the above-mentioned preparation method; COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed, be meant under 1300 rev/mins rotating speed COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed.
Among the above-mentioned preparation method, the rotating speed of twin screw extruder is 400rPm.
Among the above-mentioned preparation method, the melt of being extruded by twin screw extruder is when tank cools off, and used tank temperature is 60 ℃.
Among the above-mentioned preparation method, the rotating speed of dicing machine is 600rpm.
Adopt iso standard that the polypropylene dedicated compsn of nerf bar of present embodiment preparation is carried out performance test, the result is as shown in table 1.
The polypropylene dedicated composition properties test result of table 1 nerf bar
| Character | Method | Unit | Data |
| Proportion | GB/1033 | — | 0.89 |
| Mould shrinks | ASTM D955 | % | 0.4～0.6 |
| Tensile strength | GB1040 | MPa | ＞26 |
| Flexural strength | GB9341 | MPa | ＞22 |
| Unit elongation | ?GB1040 | % | 600～800 |
| Notched Izod impact strength (1/8 ", 23 ℃) | GB1843 | J/M | 750 |
| Notched Izod impact strength (1/8 " ,-30 ℃) | GB1843 | J/M | 720 |
| Heat-drawn wire | GB1634 | ℃ | 95 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 80 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190～230℃ |
| Suggestion mould temperature | — | ℃ | 50 |
Can find out that from table 1 the present embodiment polypropene composition has good performance really when being used for the automobile insurance bar material, but also damage resistant, low temperature resistant.
Embodiment 2
The polypropylene dedicated compsn of the nerf bar of present embodiment, its composition of raw materials is made up of each component of following parts by weight:
The polypropylene dedicated compsn of the nerf bar of present embodiment, its composition of raw materials is made up of each component of following parts by weight:
35 parts of COPPs;
30 parts of COPP reworked materials;
10 parts in lime carbonate;
25 parts of polyolefin elastomers;
0.5 part of antioxidant 1010;
168 0.5 parts of inhibitors;
0.5 part of ultraviolet ray agent UV-531
0.1 part of spread powder EBS.
The polypropylene dedicated preparation of compositions method of above-mentioned nerf bar specifically comprises the steps:
According to the prescription consumption; COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed back sending in the twin screw extruder; Behind melting mixing under 190～230 ℃ the temperature; Through the tank cooling, introduce dicing machine and carry out the pelletizing operation, collect pellet and be the polypropylene dedicated compsn of nerf bar of the present invention.
Among the above-mentioned preparation method; COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed, be meant under 1300 rev/mins rotating speed COPP, COPP reworked material, lime carbonate, polyolefin elastomer, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed.
Among the above-mentioned preparation method, the rotating speed of twin screw extruder is 400rPm.
Among the above-mentioned preparation method, the melt of being extruded by twin screw extruder is when tank cools off, and used tank temperature is 55 ℃.
Among the above-mentioned preparation method, the rotating speed of dicing machine is 900rpm.
Adopt iso standard that the polypropylene dedicated compsn of nerf bar of present embodiment preparation is carried out performance test, the result is as shown in table 2.
The polypropylene dedicated composition properties test result of table 2 nerf bar
| Character | Method | Unit | Data |
| Proportion | GB/1033 | — | 0.89 |
| Mould shrinks | ASTM D955 | % | 0.4～0.6 |
| Tensile strength | GB1040 | MPa | 26 |
| Flexural strength | GB9341 | MPa | 22 |
| Unit elongation | ?GB1040 | % | 790 |
| Notched Izod impact strength (1/8 ", 23 ℃) | GB1843 | J/M | 750 |
| Notched Izod impact strength (1/8 " ,-30 ℃) | GB1843 | J/M | 720 |
| Heat-drawn wire | GB1634 | ℃ | 95 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 80 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190～230℃ |
| Suggestion mould temperature | — | ℃ | 50 |
Can find out that from table 2 the present embodiment polypropene composition has good performance really when being used for the automobile insurance bar material, but also damage resistant, low temperature resistant.
Claims (9)
1. polypropylene dedicated compsn of nerf bar, its composition of raw materials is made up of each component of following parts by weight:
30～50 parts of COPPs;
30～50 parts of COPP reworked materials;
10～30 parts in lime carbonate;
15～25 parts of toughner;
0.1～0.5 part of antioxidant 1010;
168 0.1～0.5 part of inhibitor;
0.3～0.5 part of anti UV agent UV-531;
0.08～0.1 part of spread powder EBS.
2. according to the polypropylene dedicated compsn of the said a kind of nerf bar of claim 1, it is characterized in that said COPP is the injection grade COPP, said COPP reworked material is an injection grade COPP reworked material.
3. according to the polypropylene dedicated compsn of the said a kind of nerf bar of claim 1, it is characterized in that said lime carbonate adopts particle diameter to be less than or equal to 10 microns lime carbonate.
4. according to the polypropylene dedicated compsn of the said a kind of nerf bar of claim 1, it is characterized in that said toughner is polyolefin elastomer POE, or the elastomer thermoplastic mixtures of polyhutadiene-1 and butadiene-styrene rubber polyisobutene.
5. polypropylene dedicated preparation of compositions method of said each nerf bar of claim 1-4; It is characterized in that said preparation method sends in the twin screw extruder after COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed the back; Behind melting mixing under 190～230 ℃ the temperature; Cool off through tank; Introduce dicing machine and carry out the pelletizing operation, collect pellet and be the polypropylene dedicated compsn of required nerf bar.
6. according to the polypropylene dedicated preparation of compositions method of the said a kind of nerf bar of claim 5; It is characterized in that said COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS being mixed, be meant under 650～1300 rev/mins rotating speed COPP, COPP reworked material, lime carbonate, toughner, antioxidant 1010, inhibitor 168, anti UV agent UV-531 and spread powder EBS are mixed.
7. according to the polypropylene dedicated preparation of compositions method of the said a kind of nerf bar of claim 5, the rotating speed that it is characterized in that said twin screw extruder is 250～400rPm.
8. according to the polypropylene dedicated preparation of compositions method of the said a kind of nerf bar of claim 5, when it is characterized in that said tank cools off, used tank temperature is 50～60 ℃.
9. according to the polypropylene dedicated preparation of compositions method of the said a kind of nerf bar of claim 5, the rotating speed that it is characterized in that said dicing machine is 600～900rpm.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102898723A (en) * | 2011-07-28 | 2013-01-30 | 合肥杰事杰新材料股份有限公司 | Polypropylene composition and preparation method thereof |
| CN104629128A (en) * | 2015-01-29 | 2015-05-20 | 柳州市颖航汽配有限公司 | Special rubber for automobile bumper |
| CN104672381A (en) * | 2015-01-29 | 2015-06-03 | 柳州市颖航汽配有限公司 | Automotive rubber speed changing belt |
| CN107501743A (en) * | 2016-06-14 | 2017-12-22 | 合肥杰事杰新材料股份有限公司 | A kind of low after-contraction PP composite material for car insurance bar and preparation method thereof |
| CN108912503A (en) * | 2018-06-02 | 2018-11-30 | 上海山容塑料科技有限公司 | A kind of low temperature impact protection box material and preparation method thereof |
| CN111073135A (en) * | 2018-10-19 | 2020-04-28 | 重庆霏欧纳科技有限公司 | Modified polypropylene resin and preparation method thereof |
| CN115044136A (en) * | 2022-05-13 | 2022-09-13 | 宁波信泰机械有限公司 | High-impact-resistance regenerated polypropylene composite material for automobiles and preparation method thereof |
| CN115873351A (en) * | 2022-12-13 | 2023-03-31 | 上海奉坤新材料有限公司 | Impact-resistant weather-resistant environment-friendly PP material and preparation method and application thereof |
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| CN101798423A (en) * | 2010-03-25 | 2010-08-11 | 从化市聚赛龙工程塑料有限公司 | Modified composite material with waste polypropylene plastic as raw material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898723A (en) * | 2011-07-28 | 2013-01-30 | 合肥杰事杰新材料股份有限公司 | Polypropylene composition and preparation method thereof |
| CN104629128A (en) * | 2015-01-29 | 2015-05-20 | 柳州市颖航汽配有限公司 | Special rubber for automobile bumper |
| CN104672381A (en) * | 2015-01-29 | 2015-06-03 | 柳州市颖航汽配有限公司 | Automotive rubber speed changing belt |
| CN107501743A (en) * | 2016-06-14 | 2017-12-22 | 合肥杰事杰新材料股份有限公司 | A kind of low after-contraction PP composite material for car insurance bar and preparation method thereof |
| CN108912503A (en) * | 2018-06-02 | 2018-11-30 | 上海山容塑料科技有限公司 | A kind of low temperature impact protection box material and preparation method thereof |
| CN108912503B (en) * | 2018-06-02 | 2020-08-11 | 上海山容塑料科技有限公司 | Low-temperature impact-resistant protective box material and preparation method thereof |
| CN111073135A (en) * | 2018-10-19 | 2020-04-28 | 重庆霏欧纳科技有限公司 | Modified polypropylene resin and preparation method thereof |
| CN115044136A (en) * | 2022-05-13 | 2022-09-13 | 宁波信泰机械有限公司 | High-impact-resistance regenerated polypropylene composite material for automobiles and preparation method thereof |
| CN115044136B (en) * | 2022-05-13 | 2023-10-20 | 宁波信泰机械有限公司 | High-impact regenerated polypropylene composite material for automobiles and preparation method thereof |
| CN115873351A (en) * | 2022-12-13 | 2023-03-31 | 上海奉坤新材料有限公司 | Impact-resistant weather-resistant environment-friendly PP material and preparation method and application thereof |
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| CN102532723B (en) | 2013-08-21 |
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