CN101050291A - Composition of composite plastic of polypropylene, and method for preparing the composition - Google Patents
Composition of composite plastic of polypropylene, and method for preparing the composition Download PDFInfo
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- CN101050291A CN101050291A CN 200710013323 CN200710013323A CN101050291A CN 101050291 A CN101050291 A CN 101050291A CN 200710013323 CN200710013323 CN 200710013323 CN 200710013323 A CN200710013323 A CN 200710013323A CN 101050291 A CN101050291 A CN 101050291A
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Abstract
This invention discloses a polypropylene composite plastic composition, which is mainly composed of polypropylene powder, light calcium carbonate, white oil, antioxidant and filler. The polypropylene composite plastic composition is prepared by: uniformly stirring the above components, adding into an injection molding machine, injecting into a mold, and cooling. The polypropylene composite plastic composition has reduced cost by at least 25%, and prolonged service life by 7-10 years. Besides, the polypropylene composite plastic composition has high heat and cold resistance and low shrinkage rate, and can be used to produce food wrappages, plastic windows and doors, turnover boxes, plastic pipes, TV cabinets, plastic tables and chairs, pencil boxes and automobile components.
Description
Technical field
The present invention relates to a kind of composite plastic composition, particularly relate to a kind of composite plastic of polypropylene composition.The invention still further relates to the preparation method of this polypropylene plastic compound.
Background technology
Plastics are common a kind of materials, and having many uses of it is general.The composite plastic that wherein is used to make food, drug packaging thing is mainly particle such as polythene PE, polyethylene terephtalate, polycarbonate, polypropylene PP and a certain proportion of foodstuff sanitation-stage level stopping composition hybrid process makes, this composite plastic ubiquity cost height, easy aging, shortcoming such as work-ing life is short, high and low temperature resistance is poor, intensity is low, the temperature magnification ratio is big.Also there is same shortcoming in the composite plastic that is used to make plastic door-window, Turnover Box, plastic pipe, housing of TV set, plastics tables and chairs, writing case, auto parts machinery etc.
Summary of the invention
The object of the present invention is to provide a kind of novel composite plastic of polypropylene and preparation method thereof, this composite plastic has low production cost, be difficult for aging, than common plastics goods long service life 7-10, not only high temperature resistant, can also be low temperature resistant, the intensity height, advantages such as molding shrinkage is little can be widely used in fields such as wholesome food packing material and plastic door-window, Turnover Box, plastic pipe, housing of TV set, plastics tables and chairs, writing case, auto parts machinery.
This composite plastic of polypropylene is made by following materials in weight portion: polypropylene powder is 25 parts in a PP powder, food sanitation grade light-weight calcium carbonate 4-11 part, food sanitation grade white oil 0.1-0.15 part.Can also add foodstuff sanitation-stage oxidation inhibitor 0.05-0.015 part separately, perhaps add foodstuff sanitation-stage stopping composition 2-10 part separately, perhaps both add simultaneously.The composite plastic of polypropylene that makes by above-mentioned component can be used for the wholesome food packing material.The composite plastic of polypropylene that uses lime carbonate, white oil, oxidation inhibitor, stopping composition to make in the above-mentioned component can be used for fields such as plastic door-window, Turnover Box, plastic pipe, housing of TV set, plastics tables and chairs, writing case, auto parts machinery.
Producing composite plastic of polypropylene generally is to use polypropylene GRANULES, and the polypropylene powder that adopts in the component of the present invention to be the PP powder be makes the raw material of polypropylene GRANULES, price is lower than polypropylene GRANULES, can reduce the cost of composite plastic of polypropylene, and because of its for Powdered be easier to mix all with other raw materials permit.The light calcium carbonate price is more cheap than polypropylene powder and other packing materials, can reduce the cost of composite plastic of polypropylene, also plays raising intensity, prevents to wear out, increase the service life, and improves high and low temperature resistance, reduces the effect of temperature magnification ratio.Produce composite plastic and generally all will add a certain amount of stopping composition, can not directly add light calcium carbonate, because frictional force increases after directly adding light calcium carbonate, injection moulding machine rotates difficulty in injection moulding process, wear and tear in machines is serious, and finished product is difficult for coming off from mould, and finished surface is comparatively coarse, and a certain amount of white oil that adds lubricate in component just can make above problem be well solved.The effect that adds oxidation inhibitor in the component is to slow down oxidation, prolongs the life-span of composite plastic of polypropylene.Also can add stopping composition in the component.Use food sanitation grade light-weight calcium carbonate, food sanitation grade white oil, foodstuff sanitation-stage oxidation inhibitor, foodstuff sanitation-stage stopping composition can satisfy the healthy requirement that is used for wholesome food, drug packaging thing in the component.
This composite plastic of polypropylene makes by following method: after preparing material by said components, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires injection volume 125g at least, and temperature is controlled at 180-200 ℃ during injection moulding, injection time 1-3 second, 3-10 second cooling time, product come out the back fully cooling get final product.
The advantage of this composite plastic of polypropylene is described as follows:
1, low production cost.The production cost of common composite plastic is all per ton more than 11000 yuan, and the composite plastic of polypropylene cost that adopts component of the present invention to produce is up to 8000 yuan per ton, and cost reduces by 25% at least than common composite plastic.
2, shrinking percentage is low
Shrinking percentage means the plastics cooling curing after the demoulding is shaped, and the percentage error between its size and original mould size can record according to ASTM D955 method.When Design of Plastic Mould, must consider earlier shrinking percentage, to cause finished product bad in order to avoid cause the error of final dimension.Below enumerate the shrinking percentage of several common plastics raw materials.
| The plastics title | Shaping shrinkage rate (%) | The plastics title | Shaping shrinkage rate (%) |
| ABS | 0.3～0.8 | PBT | 1.3～2.4 |
| PE | 0.5～2.5 | PC | 0.4～0.7 |
| PET | 2.0～2.5 | Hard PVC | 0.1～0.5 |
| PP | 1.0～2.5 | Flexible PVC | 1.0～5.0 |
It is 0.3-0.6% that composite plastic of polypropylene disclosed by the invention records shrinking percentage according to ASTM D955 method, less than the shrinking percentage of the common plastics raw material of enumerating in the last table.
Embodiment
Embodiment 1: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 4 parts of food sanitation grade light-weight calcium carbonates, 0.1 part of food sanitation grade white oil.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 180 ℃ during injection moulding, 1 second injection time, 3 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 2: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 11 parts of food sanitation grade light-weight calcium carbonates, 0.15 part of food sanitation grade white oil.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 200 ℃ during injection moulding, 3 seconds injection times, 10 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 3: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 7 parts of food sanitation grade light-weight calcium carbonates, 0.13 part of food sanitation grade white oil, 0.05 part in foodstuff sanitation-stage oxidation inhibitor.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 190 ℃ during injection moulding, 2 seconds injection times, 9 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 4: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 4 parts of food sanitation grade light-weight calcium carbonates, 0.1 part of food sanitation grade white oil, 0.1 part in foodstuff sanitation-stage oxidation inhibitor, 2 parts of foodstuff sanitation-stage stopping composition.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 180 ℃ during injection moulding, 2 seconds injection times, 9 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 5: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 4 parts of food sanitation grade light-weight calcium carbonates, 0.1 part of food sanitation grade white oil, 10 parts of foodstuff sanitation-stage stopping composition.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 190 ℃ during injection moulding, 2 seconds injection times, 9 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 6: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 5 parts of light calcium carbonates, 0.1 part of white oil, 2 parts of stopping composition.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 180 ℃ during injection moulding, 2 seconds injection times, 9 seconds cooling times, abundant cooling got final product after product came out.
Embodiment 7: the title of various compositions and weight are in the present embodiment: polypropylene powder is 25 parts in a PP powder, 4 parts of light calcium carbonates, 0.15 part of white oil, 0.15 part in oxidation inhibitor, 10 parts of stopping composition.After said components prepared material, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, and temperature is controlled at 180 ℃ during injection moulding, 2 seconds injection times, 9 seconds cooling times, abundant cooling got final product after product came out.
Claims (4)
1, a kind of composite plastic of polypropylene composition is characterized in that it includes the component of following weight part: polypropylene powder is 25 parts in a PP powder, food sanitation grade light-weight calcium carbonate 4-11 part, food sanitation grade white oil 0.1-0.15 part.
2. composite plastic composition according to claim 1 is characterized in that its weight part adds foodstuff sanitation-stage oxidation inhibitor 0.05-0.015 weight part in filling a prescription.
3. composite plastic composition according to claim 1 and 2 is characterized in that its weight part adds foodstuff sanitation-stage stopping composition 2-10 weight part in filling a prescription.
4. composite plastic of polypropylene composition manufacturing method, it is characterized in that: behind claim 1 or 2 or 3 or 4 described formulation ratios, be stirred well to few 30 minutes, add the injection moulding machine charging basket then, inject mould, injection moulding machine requires more than the injection volume 125g, temperature is controlled at 180 ℃ to 200 ℃ during injection moulding, injection time 1-3 second, 3-10 second cooling time, product come out the back fully cooling get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710013323 CN101050291A (en) | 2007-02-14 | 2007-02-14 | Composition of composite plastic of polypropylene, and method for preparing the composition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710013323 CN101050291A (en) | 2007-02-14 | 2007-02-14 | Composition of composite plastic of polypropylene, and method for preparing the composition |
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| CN101050291A true CN101050291A (en) | 2007-10-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824188A (en) * | 2010-04-19 | 2010-09-08 | 天长市天方塑业有限公司 | Medical thermoplastic elastomer gasket and preparation method thereof |
| CN102070827A (en) * | 2010-12-09 | 2011-05-25 | 楼仲平 | Preparation method of noctilucent material and straw |
| CN102219955A (en) * | 2010-04-13 | 2011-10-19 | 上海深海宏添建材有限公司 | High temperature mute drainpipe |
| CN104292650A (en) * | 2014-11-07 | 2015-01-21 | 合肥大安印刷有限责任公司 | Low-odor plastic sheet used for children's toys |
| CN104788806A (en) * | 2015-03-31 | 2015-07-22 | 苏州市鼎立包装有限公司 | Impact-resistant modified plastic turnover box and preparation method thereof |
| CN105906834A (en) * | 2016-04-22 | 2016-08-31 | 宁波国际材料基因工程研究院有限公司 | Method for preparing antibacterial porous composite material |
| CN112210162A (en) * | 2019-07-09 | 2021-01-12 | 杭州联和工具制造有限公司 | Calcium carbonate filled PP composite material and method for manufacturing plastic part |
-
2007
- 2007-02-14 CN CN 200710013323 patent/CN101050291A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219955A (en) * | 2010-04-13 | 2011-10-19 | 上海深海宏添建材有限公司 | High temperature mute drainpipe |
| CN102219955B (en) * | 2010-04-13 | 2013-02-13 | 上海深海宏添建材有限公司 | High temperature mute drainpipe |
| CN101824188A (en) * | 2010-04-19 | 2010-09-08 | 天长市天方塑业有限公司 | Medical thermoplastic elastomer gasket and preparation method thereof |
| CN101824188B (en) * | 2010-04-19 | 2012-12-19 | 天长市天方塑业有限公司 | Medical thermoplastic elastomer gasket and preparation method thereof |
| CN102070827A (en) * | 2010-12-09 | 2011-05-25 | 楼仲平 | Preparation method of noctilucent material and straw |
| CN102070827B (en) * | 2010-12-09 | 2013-02-13 | 楼仲平 | Preparation method of noctilucent material and straw |
| CN104292650A (en) * | 2014-11-07 | 2015-01-21 | 合肥大安印刷有限责任公司 | Low-odor plastic sheet used for children's toys |
| CN104788806A (en) * | 2015-03-31 | 2015-07-22 | 苏州市鼎立包装有限公司 | Impact-resistant modified plastic turnover box and preparation method thereof |
| CN105906834A (en) * | 2016-04-22 | 2016-08-31 | 宁波国际材料基因工程研究院有限公司 | Method for preparing antibacterial porous composite material |
| CN112210162A (en) * | 2019-07-09 | 2021-01-12 | 杭州联和工具制造有限公司 | Calcium carbonate filled PP composite material and method for manufacturing plastic part |
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Open date: 20071010 |