CN101792549B - Improved polypropylene renewable material modified plate foaming process - Google Patents
Improved polypropylene renewable material modified plate foaming process Download PDFInfo
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- CN101792549B CN101792549B CN2009102142203A CN200910214220A CN101792549B CN 101792549 B CN101792549 B CN 101792549B CN 2009102142203 A CN2009102142203 A CN 2009102142203A CN 200910214220 A CN200910214220 A CN 200910214220A CN 101792549 B CN101792549 B CN 101792549B
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- polypropylene
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- recycled materials
- branching
- coupling agent
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Abstract
The invention relates to the technical field of processes of utilizing polypropylene renewable materials for foaming and processing plates, in particular to an improved polypropylene renewable material modified plate foaming process. Branched polypropylene new materials, sodium benzoate, sorbitol and an antioxidant are added in the polypropylene renewable materials for forming mixed raw materials, and the mixed raw materials are further used for carrying out the foaming process. The process modifies the polypropylene renewable materials during the foaming process, thereby improving the nucleation effect during the foaming process, improving the performances on various aspects of the polypropylene renewable materials, improving the proportion of the polypropylene renewable materials and improving the performances on various aspects of produced polypropylene renewable material plates; furthermore, the polypropylene renewable materials have the advantages of good physical performance, high strength, small degradation degree and stable quality; and the polypropylene renewable material plates obtained by processing through the foaming process have the advantages of uniform foaming, smooth surface of the polypropylene renewable material plates and good surface quality of the polypropylene renewable material plates, and the performances on all the aspects of the polypropylene renewable material plates are close to those of the branched polypropylene new material plates.
Description
Technical field
The present invention relates to utilize that polypropene recycled materials foams machining sheet adds the Technology field, refer in particular to a kind of improved polypropylene renewable material modified plate foaming process.
Background technology
Polypropene recycled materials sheet material is to be the sheet material that raw material is processed into by foaming with polypropylene (PP) reworked material, the cost of polypropene recycled materials sheet material is low, the sheet material performance in every respect that adopts the polypropene recycled materials foaming to be processed into all can descend, and for example density unevenness is even, tensile strength reduction, elongation at break increase, flexural strength reduction, notched Izod impact strength reduction, heat-drawn wire increase, molding shrinkage increase etc.General use polypropene recycled materials is and reduces production costs.But polypropene recycled materials exists, and quality is aging, inferior solution, sneak into defective such as impurity, and polypropene recycled materials is very unstable, and makes product flaw occur easily.But since the trend of environmental protection demand and global carbon reduction, the means of using reworked material to necessitate.
If use reworked material not address the above problem at present, improve the physicals of polypropene recycled materials, then promptly lose the advantage, particularly quality-advantage of using polypropene recycled materials.Polypropylene virgin material (ratio of virgin material in gross weight surpasses 80%) as heavy addition branching then loses the meaning of using polypropene recycled materials, State Environmental Protection Administration's regulation, and the plastic waste in the product must not be less than 80% in mass.
The applicant is engaged in polypropylene (PP), polyethylene (PE) plastic working for many years, also find that the polypropene recycled materials degraded is serious, improve its physicals as desire and then must use some modified methods, can use 80% above polypropene recycled materials, can guarantee steady quality again, reduce its cost.
In the prior art, for improving the performance of polypropene recycled materials sheet material, the modified method that adopts mainly is a chemical modification at present, chemical modification is with technics of reclaim of plastic waste and make chemicals such as adding superoxide in the process of plastic pellet, improve the performance of polypropene recycled materials by the effect of chemicals, it should be noted that chemical modification is to carry out in the process of producing polypropene recycled materials plastics material for making clothes.Though improve the performance of a certain direction by the polypropene recycled materials of chemical modification, it tends to sacrifice the performance of others, polypropene recycled materials can be poorer in the performance of other direction.For example, under identical technical qualification, when the polypropene recycled materials of employing process modification foams, nucleating effect is poor in the foaming process, and it is inhomogeneous to foam, and the sheet material that causes foaming to form is difficult to control aspect thickness, plate surface is uneven, and plate surface is of poor quality.
Summary of the invention
The objective of the invention is to provides a kind of improved polypropylene renewable material modified plate foaming process at the deficiencies in the prior art, the present invention increases substantially the ratio of polypropene recycled materials, and the present invention's polypropene recycled materials plate foaming of obtaining of processing that foams is even, the polypropene recycled materials plate surface is smooth, polypropene recycled materials plate surface quality is good, and the performance of polypropene recycled materials sheet material each side is near the polypropylene virgin material sheet material of branching.
For achieving the above object, the present invention realizes by following technical approach:
A kind of improved polypropylene renewable material modified plate foaming process: before using polypropene recycled materials to carry out foam process, the polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent that add branching in polypropene recycled materials, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described branching mix the formation mixing raw material with polypropene recycled materials;
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40-84%,
The polypropylene virgin material 15-55% of branching,
Sodium Benzoate 0.25-1.5%,
Sorbyl alcohol 0.25-1.5%,
Antioxidant 0.25-1.5%,
Titanate coupling agent 0.25-1.5%,
Described mixing raw material is dropped in the raw material input port in the injection moulding machine, and described mixing raw material is produced foaming plate through fusion, mixing, extrusion molding and foaming step, finishes foam process.
First kind of embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40%,
The polypropylene virgin material 59% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
Second kind of embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 60%,
The polypropylene virgin material 38% of branching,
Sodium Benzoate 0.5%,
Sorbyl alcohol 0.5%,
Antioxidant 0.5%,
Titanate coupling agent 0.5%.
The third embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 70%,
The polypropylene virgin material 26% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
The 4th kind of embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 16% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
The 5th kind of embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 19% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
The 6th kind of embodiment of the present invention, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 84%,
The polypropylene virgin material 15% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
Further, the weight ratio of described Sodium Benzoate, sorbyl alcohol, antioxidant and titanate coupling agent is 1: 1: 1: 1.
Further, described antioxidant is phenolic antioxidant or phosphorons acid compound.
Beneficial effect of the present invention: the present invention is before using polypropene recycled materials to carry out foam process, the polypropylene virgin material that in polypropene recycled materials, adds branching, Sodium Benzoate, sorbyl alcohol, antioxidant and form mixing raw material, re-use this mixing raw material and carry out foam process, the present invention in foaming process to polypropylene renewable material modified, improve the nucleating effect in the foaming process, improve the performance of polypropene recycled materials each side, improve the ratio of polypropene recycled materials, and can improve the performance of the polypropene recycled materials sheet material each side of being produced, the polypropene recycled materials good physical performance, the intensity height, degree of degradation is little, steady quality is difficult for aging; Even by the polypropene recycled materials plate foaming that foam process processing obtains, the polypropene recycled materials plate surface is smooth, and polypropene recycled materials plate surface quality is good, and the performance of polypropene recycled materials sheet material each side is near the polypropylene virgin material sheet material of branching.
Embodiment
Embodiment one
The embodiment of a kind of improved polypropylene renewable material modified plate foaming process of the present invention, may further comprise the steps: before using polypropene recycled materials to carry out foam process, the polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent that add branching in polypropene recycled materials, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described branching mix the formation mixing raw material with polypropene recycled materials;
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40-84%,
The polypropylene virgin material 15-55% of branching,
Sodium Benzoate 0.25-1.5%,
Sorbyl alcohol 0.25-1.5%,
Antioxidant 0.25-1.5%,
Titanate coupling agent 0.25-1.5%,
Described mixing raw material is dropped in the raw material input port in the injection moulding machine, and described mixing raw material is produced foaming plate through fusion, mixing, extrusion molding and foaming step, finishes foam process.
Further, the weight ratio of described Sodium Benzoate, sorbyl alcohol, antioxidant and titanate coupling agent is 1: 1: 1: 1.
Further, described antioxidant is phenolic antioxidant or phosphorons acid compound.
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described branching are material of the prior art, and polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of branching all can directly be bought in market.
Wherein because the polypropylene virgin material of branching possesses higher intensity, the intensity of the polypropylene virgin material of branching be general polypropylene virgin material intensity 3-5 doubly, the polypropylene virgin material of branching and polypropene recycled materials blend can improve the intensity of polypropene recycled materials.
In addition, use titanate coupling agent can improve the bonding strength of impurity and the polypropylene virgin material of polypropene recycled materials, branching in the polypropene recycled materials, thus the intensity of raising polypropene recycled materials.
The present invention is in foaming process, described Sodium Benzoate, sorbyl alcohol, antioxidant and titanate coupling agent play the chemical catalysis effect, polypropene recycled materials is combined mutually better with the polypropylene virgin material of branching, impurity in the polypropene recycled materials is combined better with the polypropylene virgin material of polypropene recycled materials, branching, can also improve the nucleating effect of mixing raw material in foaming process on the other hand, make mixing raw material have better foam performance, thereby improve the performance of polypropene recycled materials sheet material each side.
The present invention can improve the performance of polypropene recycled materials in foaming process, make the performance of polypropene recycled materials each side approach the polypropylene virgin material of branching, improve the performance of the polypropene recycled materials sheet material each side of being produced, and the present invention increases substantially the ratio of polypropene recycled materials, and polypropene recycled materials can reach 84% the most at high proportion in mixing raw material, and the good physical performance of polypropene recycled materials, the intensity height, degree of degradation is little, and steady quality is difficult for aging.
In addition, the cost of the polypropene recycled materials sheet material of producing by technology of the present invention is well below the polypropylene virgin material sheet material of branching, increase substantially the market competitiveness of polypropene recycled materials sheet material, and the present invention is even by the polypropene recycled materials plate foaming that foaming processing obtains, the polypropene recycled materials plate surface is smooth, polypropene recycled materials plate surface quality is good, and the performance of polypropene recycled materials sheet material each side is near the polypropylene virgin material sheet material of branching.
Embodiment two
Embodiments of the invention two are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40%,
The polypropylene virgin material 59% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
Embodiment three
Embodiments of the invention three are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 60%,
The polypropylene virgin material 38% of branching,
Sodium Benzoate 0.5%,
Sorbyl alcohol 0.5%,
Antioxidant 0.5%,
Titanate coupling agent 0.5%.
Embodiment four
Embodiments of the invention four are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 70%,
The polypropylene virgin material 26% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
Embodiment five
Embodiments of the invention five are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 16% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
Embodiment six
Embodiments of the invention four are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 19% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
Embodiment seven
Embodiments of the invention seven are a kind of more specifically embodiments of the present invention, and its step is identical with enforcement one, no longer gives unnecessary details at this, and its difference is:
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 84%,
The polypropylene virgin material 15% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
Above content is preferred embodiment of the present invention only, and for those of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (9)
1. improved polypropylene renewable material modified plate foaming process: it is characterized in that: before using polypropene recycled materials to carry out foam process, the polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent that add branching in polypropene recycled materials, polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described branching mix the formation mixing raw material with polypropene recycled materials;
Polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40-84%,
The polypropylene virgin material 15-55% of branching,
Sodium Benzoate 0.25-1.5%,
Sorbyl alcohol 0.25-1.5%,
Antioxidant 0.25-1.5%,
Titanate coupling agent 0.25-1.5%,
Described mixing raw material is dropped in the raw material input port in the injection moulding machine, and described mixing raw material is produced foaming plate through fusion, mixing, extrusion molding and foaming step, finishes foam process.
2. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 40%,
The polypropylene virgin material 59% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
3. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 60%,
The polypropylene virgin material 38% of branching,
Sodium Benzoate 0.5%,
Sorbyl alcohol 0.5%,
Antioxidant 0.5%,
Titanate coupling agent 0.5%.
4. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 70%,
The polypropylene virgin material 26% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
5. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 16% of branching,
Sodium Benzoate 1%,
Sorbyl alcohol 1%,
Antioxidant 1%,
Titanate coupling agent 1%.
6. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 80%,
The polypropylene virgin material 19% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
7. a kind of improved polypropylene renewable material modified plate foaming process according to claim 1: it is characterized in that: polypropylene virgin material, Sodium Benzoate, sorbyl alcohol, antioxidant and the titanate coupling agent of described polypropene recycled materials, branching shared ratio in the mixing raw material gross weight is respectively:
Polypropene recycled materials 84%,
The polypropylene virgin material 15% of branching,
Sodium Benzoate 0.25%,
Sorbyl alcohol 0.25%,
Antioxidant 0.25%,
Titanate coupling agent 0.25%.
8. according to the described a kind of improved polypropylene renewable material modified plate foaming process of one of claim 1 to 7: it is characterized in that: the weight ratio of described Sodium Benzoate, sorbyl alcohol, antioxidant and titanate coupling agent is 1: 1: 1: 1.
9. a kind of improved polypropylene renewable material modified plate foaming process according to claim 8: it is characterized in that: described antioxidant is phenolic antioxidant or phosphorons acid compound.
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| CN2009102142203A CN101792549B (en) | 2009-12-25 | 2009-12-25 | Improved polypropylene renewable material modified plate foaming process |
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| CN104118190B (en) * | 2014-06-27 | 2016-05-11 | 惠州市峄董塑胶科技有限公司 | A kind of plank stuff production technology that uses polypropylene expanded reworked material |
Citations (3)
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|---|---|---|---|---|
| CN1309669A (en) * | 1998-08-26 | 2001-08-22 | 埃克森美孚化学专利公司 | Branched polyprpoylene compositions |
| CN1318079A (en) * | 1998-09-17 | 2001-10-17 | 陶氏化学公司 | Acoustical open-cell polyolefins and process for making |
| US20060166093A1 (en) * | 2002-11-13 | 2006-07-27 | Hydro-Quebec | Electrode coated with a film obtained from an aqueous solution comprising a water-soluble binder, production method thereof and uses of same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309669A (en) * | 1998-08-26 | 2001-08-22 | 埃克森美孚化学专利公司 | Branched polyprpoylene compositions |
| CN1318079A (en) * | 1998-09-17 | 2001-10-17 | 陶氏化学公司 | Acoustical open-cell polyolefins and process for making |
| US20060166093A1 (en) * | 2002-11-13 | 2006-07-27 | Hydro-Quebec | Electrode coated with a film obtained from an aqueous solution comprising a water-soluble binder, production method thereof and uses of same |
Non-Patent Citations (1)
| Title |
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| 陈佰全等.聚丙烯发泡材料的研究进展.《塑料制造》.2006,(第12期),第55-58页. * |
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