CN1807498A - Ultra-fine talcum powder reinforced polypropylene low density casing material - Google Patents
Ultra-fine talcum powder reinforced polypropylene low density casing material Download PDFInfo
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- CN1807498A CN1807498A CN 200610045753 CN200610045753A CN1807498A CN 1807498 A CN1807498 A CN 1807498A CN 200610045753 CN200610045753 CN 200610045753 CN 200610045753 A CN200610045753 A CN 200610045753A CN 1807498 A CN1807498 A CN 1807498A
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Abstract
The invention relates to an ultra-fine talcum powder reinforced polypropylene low density casing material, wherein the master batch comprises (by weight portions): ultra-fine talcum powder (800-5000 mesh) 60-80 parts, activating agent 1-3 parts, dispersing agent 4-8 parts, elastomer 0-16 parts, lubricating agent 2-3 parts, and carrying agent 8-13 parts. The casing material comprises the constituents (by weight percentage) of filling material 50-30% and polypropylene 30-50%.
Description
Technical field
The present invention relates to macromolecular material (plastics) enhancing modified technical field and powder technology field, ultra-fine talcum powder reinforced polypropylene low density casing material particularly, make modified polypropene high-modulus high-impact material with this material, be used for the manufactured materials of household electrical appliance, industrial instrument and communication equipment housing etc.
Background technology
Case material is to use one of many, that application is wide and consumption is big materials, and the development of modern high technology makes the housing packaging facilities more and more, has promoted the development of case material, replaces metallic substance to make housing with macromolecular material, has been a kind of trend now.Now, the employed case material of people, to use maximum be the ABS macromolecular material, has the housing that uses under some conditions that modified polypropene is also arranged.According to the handling characteristics of shell products, to the requirement of case material be, most shell products are injection mouldings, and the wall of goods will approach, and therefore requires forming materials processing performance and intensity height, and modulus is big, and promptly shell dimension is stable, stressed indeformable; Require housing shock strength height, housing in use will be subjected to various collisions and impact, stressed indeformable, not bad splitting; Require the housing high and low temperature resistance good; Housing uses under torrid areas or hot environment, also uses under refrigerant latitudes or low temperature environment; Require surface of shell hardness height, damage resistant, the surface is also attractive in appearance.Requirement to case material is the comparison harshness, is not that what material can be made case material.In macromolecular material, can satisfy the material that above-mentioned requirements has over-all properties like this and have only ABS plastic.But ABS also has shortcoming, and it is the price height not only, and weathering resistance is poor, inflammable, heat-drawn wire is low.Therefore, under certain conditions, use thermal value big for a long time as the TV back casing, the accumulation temperature raises, and the ABS heat-drawn wire has only 87 ℃.Report according to data, people such as domestic king's general election have developed the modified polypropylene material that is used for housing, heat-drawn wire reaches 108 ℃, it is leading domestic modification technology, be that main performance index reaches: tensile strength 18.0Mpa, elongation at break 20%, flexural strength 32Mpa, socle girder notched Izod impact strength (23 ℃) 19.5kj/m with the high-load calcium carbonate superfine powder powder modified polypropene of interpolation
2, (23 ℃) 6.0kj/m
2, density of material can reach 1.18g/cm
3Make material become the deflagration material owing to add high-content lime carbonate, opened up suitable share market at home.It is easily capable to be easy to do with the high filled polypropylene of calcium carbonate superfine powder, can improve the shock strength of polyacrylic thermotolerance, modulus and certain level, but the more former polypropylene of the surface hardness of composite product and slickness reduces more, tensile strength obviously reduces (having only 18Mpa), shock strength improves limited to ABS, reports unlisted modulus data, and Paris white is the blocky particle shape, both made high-content, the modulus of increase also is very limited.Elongation at break lower (20%) toughness is relatively poor, replaces a part of ABS case material with this modified polypropene, also is not ideal very.
Summary of the invention
The purpose of this invention is to provide a kind of ultra-fine talcum powder reinforced polypropylene low density casing material, the integrated performance index of this material is all near ABS, the main mechanical performance index shock strength that case material requires surpasses ABS, improve because of the distinctive performance of talcum powder makes product surface hardness and slickness, can also reduce the cost of material significantly.For example, in the isotactic homo-polypropylene, add " the ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch " that 60% the technology of the present invention is made, main mechanical performance index our company test result of material is: tensile strength 21.13Mpa, elongation at break 46.4% socle girder notched Izod impact strength 24.1kj/m
2The trade mark (ABS12.94-22.16kj/m
2) bending elastic modulus 1794Mpa, density 1.17g/cm
3Every index all is higher than domestic prior art level.Because the platy particle shape has the talcum powder of strengthening action, add the resistance toheat that can improve material in the plastics significantly to again.As seen some material modified performance of the present invention is better than ABS, can replace a part of ABS to produce multiple shell products fully.
The mechanism of ultra-fine talcum powder reinforced polypropylene low density casing material is described below:
In inorganic powder material, have the talcum powder of platy particle shape, be considered to a kind of plastics reinforced additive.The first, significantly improve the Young's modulus of plastics, improving factors of modulus has two, one, and the platy particle strengthening action improves the plastics yield tensile strength, and the 2nd, the adding of powder reduces the degree of crystallinity of plastics, thereby improves Young's modulus.The polypropylene Young's modulus 980Mpa of degree of crystallinity below 70% for example.The second, the talcum powder particle is a sheet structure, is dispersed between the plastics macromolecular chain, little to the stressed orientation influence of macromolecular chain, because platy particle also is to be orientated (seeing accompanying drawing), like this, tensile strength influence to plastics is little, has a considerable amount of talcum powder can also improve the tensile strength of plastics.Theory shows, polymer macromolecule chain ordered arrangement helps intensity, toughness raising.And the lime carbonate of blocky particle shape adds in the plastics, just hinders the stressed orientation of molecular chain, and then causes defective, so, add lime carbonate and can significantly reduce plastic tensile intensity, because Paris white is a blocky particle, even high-content, the modulus of material also are can be not high.The 3rd, shell products mostly is injection moulding.Injection molding process to supramolecule behavior aggregate thing (state of aggregation) influence obviously.Practice shows that in the course of processing, under the effect of power, the mobile macromolecular chain is bound to be orientated.The high speed and high pressure injection filling mould flows, and molecular chain is proper alignment on flow direction, because the C-C dissociation energy of bond up to 833 kilocalories/mol, therefore, " freezes " to get off behind the plastic molecules bond orientation and it, its intensity will be significantly increased.The 4th, increase in order to improve talcous toughening effect and to reduce because of adding high-content talcum powder material proportion, use the elastomerics coated talc powder, given full play to the toughened ability of talcum powder particle and elastomerics particle, simultaneously, because coated talc powder particle and the increase of the micro-space between the plastic interface on every side, these countless short space sums have equaled to increase the volume of material, are added the density that increases by powder thereby offset a part.
Ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch prescription, by weight ratio:
60～80 parts of superfine talcum powders (800 orders～5000 orders),
1～3 part in activator, 4～8 parts of dispersion agents, 0～16 part on elastomerics,
2～3 parts of slipping agents, 8～13 parts in carrier;
The ultra-fine talcum powder reinforced polypropylene low density casing material prescription is by weight percentage: can use behind masterbatch 50～70%, polypropylene 30～50% uniform mixing.
Each component performance and effect are as follows in the prescription:
Superfine talcum powder (800 orders～5000 orders): the selection of talcum powder fineness, mainly,, can select the lower powder of order number for use to the less demanding housing of outward appearance according to the service requirements of shell products; The shell products high to the housing appearance requirement will select for use high order to count powder.
Activator: select stearic acid, aluminate coupling agent or esters of acrylic acid for use.Be used to handle powder body material, the surface property of modified powder particle, the consistency of raising powder particle and plastics.
Dispersion agent: select Poly Propylene Wax or polyethylene wax for use.Be used for the coated powder particle, improve the dispersiveness of powder in plastics.
Elastomerics: select POE (ethene-octene copolymer) or SBS (vinylbenzene-divinyl-styrene block copolymer) for use.Be used for the coated powder particle, improve the toughening effect of powder particle.According to the requirement of masterbatch Material Used, as emphasize high-modulus, shock strength when not high (as near the former shock strength of PP), just can be or use elastomerics less without elastomerics.
Slipping agent is selected paraffin, stearic acid or stearic acid alkene for use.
Carrier is selected polypropylene or polyethylene for use.Be mainly used in the dispersive ability that improves powder.
Advantage was as follows compared with the prior art after the present invention realized:
(1), obtained the good case material of integrated performance index, main performance index all is better than this kind material index that domestic prior art is made with the high-superfine French white powder-content toughening polypropylene., be not reported on the finding data at home and abroad with high-content talcum powder tenacity-increased profax technology as for both at home and abroad.
(2), experiment showed, low, the superior performance made from the technology of the present invention of problem material cost.Superfine talcum powder price per ton is no more than 2,000 yuan, 1.1 ten thousand yuan per ton of polypropylene market value, and case material per ton adds 40% above talcum powder, promptly reduces nearly 4,000 yuan per ton of material cost, and this just creates considerable economic for enterprise.
(3), be that country creates considerable social benefit.With the case material that present technique is made, the talcum powder that all contains more than 40% per ton, this has just saved a large amount of plastics.Plastics are by oil production, and are well-known, and oil is the strategic resource of country, and the present technique invention can be saved expensive oil in a large number, again cheap talcum resource value is significantly improved.Therefore,, reach the target of saving energy consumption, make positive contribution for setting up conservation-minded society by autonomous innovation.
(4), have vast potential for future development, improving technical level to replace the ABS case material fully again with the case material of the technology of the present invention manufacturing.With regard to now, main several performance index just are better than ABS in the material of the present invention, for example:
The 747SABS that Taiwan Qi Mei company produces, our the socle girder notched Izod impact strength of test is 22.16kj/m
2, our Material Cantilever Beam notched Izod impact strength is 24.12kj/m
2Our the high temperature resistant creep properties of material is more much better than ABS; ABS plastic is more inflammable, over-emitting black exhaust, and material of the present invention is a modified polypropene, though the inflammable burning of polypropylene is slow, adds a large amount of inorganic powders again and just becomes the deflagration material, is particularly useful for electric housing, material of the present invention is better than ABS; Have pure whitely, hard with the moulding of material injection moulding of the present invention, the surface that slickness is high can be compared with ABS fully.
More than the elasticity modulus of materials 1794Mpa of the present invention, suitable with ABS.Modulus is one of important main performance index of case material.
1, the masterbatch made from the technology of the present invention is produced the modified polypropene case material:
Can use behind masterbatch 50～70%, polypropylene 30～50% uniform mixing.
2, the technology of the present invention can be reconciled the flow index of material.Itself has oilness talcum powder, so even improve the workability that addition does not influence material yet.The melt index range of material of the present invention is 3～20g/10min.Guarantee that material has good technological forming.
3, the modified polypropene of the technology of the present invention manufacturing can be reconciled prescription, makes material reach high-modulus.Modulus is the main performance index of case material, is very important according to the varying environment condition of use housing, the size of the required modulus of adjusting.
Embodiment
Embodiment 1: ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch prescription, press the prescription weighing:
70 parts of talcum powder (5000 order)
2 parts of aluminate coupling agents
16 parts of POE
4 parts of Poly Propylene Waxes
8 parts of polyethylene
Batch mixing: earlier talcum powder and activator are put into super mixer and carry out activation treatment, 15 minutes treatment times, put into other material then, mix the back discharging.
Granulation: top materials mixed is put into dual-screw pelletizer group hopper, carry out granulation.The particle of producing is the finished product material.
The masterbatch using method: masterbatch is mixed in the polypropylene in proportion, and the incorporation of masterbatch is 60% (weight ratio), polypropylene 40%, and mixed material can use.Use the low speed spices device during mixing, do not use super mixer.
Embodiment 2: ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch prescription, press the prescription weighing:
60 parts of talcum powder (1250 order)
3 parts of stearic acid
6 parts of polyethylene waxs
2 parts in paraffin
8 parts of SBS
11 parts of polypropylene
Batch mixing, granulation process are identical with embodiment 1.
Masterbatch uses: by weight percentage, masterbatch 70%, polypropylene 30%, the two mixes and can use.
Embodiment 3: ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch prescription, press the prescription weighing:
80 parts of talcum powder (800 order)
1 part of esters of acrylic acid
8 parts of polyethylene waxs
3 parts of stearic acid
13 parts of polyethylene
Batch mixing, granulation process are identical with example I
Masterbatch uses: by weight percentage, masterbatch 50%, polypropylene 50%, the two mixes the back and uses.
Claims (6)
1, ultra-fine talcum powder reinforced polypropylene low density casing material is characterized in that ultra-fine talcum powder reinforced polypropylene low density casing material masterbatch prescription, is by weight ratio:
60～80 parts of superfine talcum powders (800 orders～5000 orders),
1～3 part in activator, 4～8 parts of dispersion agents, 0～16 part on elastomerics,
2～3 parts of slipping agents, 8～13 parts in carrier;
The ultra-fine talcum powder reinforced polypropylene low density casing material prescription is by weight percentage: masterbatch 50～70%, polypropylene 30～50%.
2, ultra-fine talcum powder reinforced polypropylene low density casing material according to claim 1 is characterized in that described activator selects stearic acid, aluminate coupling agent or esters of acrylic acid for use.
3, ultra-fine talcum powder reinforced polypropylene low density casing material according to claim 1 is characterized in that dispersion agent selects Poly Propylene Wax or polyethylene wax for use.
4, ultra-fine talcum powder reinforced polypropylene low density casing material according to claim 1 is characterized in that elastomerics selects ethene-octene copolymer POE or vinylbenzene-divinyl-styrene block copolymer SBS for use.
5, ultra-fine talcum powder reinforced polypropylene low density casing material according to claim 1 is characterized in that slipping agent selects paraffin, stearic acid or stearic acid alkene for use.
6, ultra-fine talcum powder reinforced polypropylene low density casing material according to claim 1 is characterized in that carrier selects polypropylene or polyethylene for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045753 CN1807498A (en) | 2006-01-26 | 2006-01-26 | Ultra-fine talcum powder reinforced polypropylene low density casing material |
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| CN 200610045753 CN1807498A (en) | 2006-01-26 | 2006-01-26 | Ultra-fine talcum powder reinforced polypropylene low density casing material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944516B (en) * | 2006-10-31 | 2012-02-15 | 东莞金富亮塑胶颜料有限公司 | High density poly propylene (PP) composite material |
| CN101602873B (en) * | 2009-06-30 | 2012-06-27 | 美的集团有限公司 | Plastic modified material for microwave oven and preparation method thereof |
| CN102816336A (en) * | 2012-09-07 | 2012-12-12 | 上海第二工业大学 | Method for preparing high filling plastic masterbatch for polypropylene woven bag |
-
2006
- 2006-01-26 CN CN 200610045753 patent/CN1807498A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944516B (en) * | 2006-10-31 | 2012-02-15 | 东莞金富亮塑胶颜料有限公司 | High density poly propylene (PP) composite material |
| CN101602873B (en) * | 2009-06-30 | 2012-06-27 | 美的集团有限公司 | Plastic modified material for microwave oven and preparation method thereof |
| CN102816336A (en) * | 2012-09-07 | 2012-12-12 | 上海第二工业大学 | Method for preparing high filling plastic masterbatch for polypropylene woven bag |
| CN102816336B (en) * | 2012-09-07 | 2014-10-22 | 上海第二工业大学 | Method for preparing high filling plastic masterbatch for polypropylene woven bag |
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