CN103910938B - A kind of low odor polypropylene reclaimed materials and preparation method thereof - Google Patents

A kind of low odor polypropylene reclaimed materials and preparation method thereof Download PDF

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Publication number
CN103910938B
CN103910938B CN201410142251.3A CN201410142251A CN103910938B CN 103910938 B CN103910938 B CN 103910938B CN 201410142251 A CN201410142251 A CN 201410142251A CN 103910938 B CN103910938 B CN 103910938B
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China
Prior art keywords
polypropylene
starch
reclaimed materials
low odor
preparation
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CN201410142251.3A
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Chinese (zh)
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CN103910938A (en
Inventor
于海鸥
杨霄云
王爱东
程文建
赵志国
肖鹏
邓旭
王瑞锋
刘韧
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CHINA QUALITY CERTIFICATION CENTER
Kingfa Science and Technology Co Ltd
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CHINA QUALITY CERTIFICATION CENTER
Kingfa Science and Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/12Making granules characterised by structure or composition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Abstract

The invention discloses a kind of low odor polypropylene reclaimed materials and preparation method thereof, count by weight, comprise polypropylene recovery material: 74-92 part; Starch: 5-20 part; Compatilizer: 1-5 part; Polypropylene general oxidation inhibitor and processing aid: 0.2-2 part; Its preparation method adds in screw extrusion press after each component being mixed to carry out melt blending reaction and extruding pelletization and get final product.The present invention by adding watery starch material in recovery polypropylene, the moisture in native starch is utilized to vaporize in melt-processed process, take the small-molecule substance that can produce smell in polypropylene recovery material out of material internal, thus the polypropylene salvage material prepared not only has low smell, and the rigidity of material is improved largely.

Description

A kind of low odor polypropylene reclaimed materials and preparation method thereof
Technical field
The invention belongs to technical field of polymer materials, be specifically related to a kind of low odor polypropylene reclaimed materials and preparation method thereof.
Background technology
Along with the development of plastics industry, increasing plastic applications has arrived the various piece of life, and As time goes on, plastics unavoidably suffer aging, damaged and discarded.Polypropylene is a kind of common macromolecular material, has good performance and range of application widely, and its discarded amount is also increasing year by year.In recent years, because environmental pollution, living cost, production cost and operation cost constantly rise, many enterprises are for seeking benefit, and the recovery that target has been put into waste or used plastics is again in modification.But reclaim polypropylene material and generally have comparatively niff, its odoring substance mainly comprises the materials such as amine, sulphur class, thio-alcohol.This limits to a certain extent and reclaims polyacrylic application.
The current method improving polypropylene material smell mainly uses additive, and these additives are generally divided into shielded type type, physisorption type and chemical reaction type.
Shielded type: adding perfume compound in polypropylene material can cover material niff, and this method is generally applied to toy, general merchandise, cosmetics containers, daily-use electrical appliance and gardening equipment.But whether the perfume compound shelf time is depended on its aggregation extent, mass-surface ratio, is exposed to and is heated or moist environment, also have profiled member whether to carry out tight every factors such as most air-packings, and it can not fundamentally eliminate niff in salvage material.
Physisorption type: add the porous materials such as a small amount of zeolite in the material, can play the effect improving material smell.Zeolite has a large amount of crystallization cavities, and these cavities can catch those tools gas molecules odorous.Molecular adsorbent has been successfully applied to polyolefine extruding pipe material, injection and extrusion-blown modling container, barrier packaging material, the housing material of extrusion moulding and sealing polymkeric substance.Molecular adsorption powder also can be added to remove steam in plastics as hygroscopic agent, and these steam also can contribute to plastics and produce smell.But this absorption is generally physical adsorption, when temperature is higher, gas molecules likely can diffuse out.
Chemical reaction type: add the additive that can discharge small molecules reaction of smell with these in the middle of material prescription, by reaction between these additive and small molecules produce molecular weight comparatively large, normal use thermal environment under, as being less than 100 DEG C, the another kind of compound producing peculiar smell can not be evaporated from material, thus reach the effect eliminating peculiar smell.But chemical reaction type is just carried out reaction for specific functional group and fixed, but for reclaiming, polypropylene smell source is complicated, content is high, is difficult to effectively be fixed by chemical reaction.
Summary of the invention
For solving above-mentioned the deficiencies in the prior art, primary and foremost purpose of the present invention is to provide a kind of low odor polypropylene reclaimed materials.
Another object of the present invention is to the preparation method that above-mentioned low odor polypropylene reclaimed materials is provided.
The present invention is achieved through the following technical solutions:
A kind of low odor polypropylene reclaimed materials, count by weight, comprise following component:
Polypropylene recovery material: 74-92 part;
Starch: 5-20 part;
Compatilizer: 1-5 part;
Polypropylene general oxidation inhibitor and processing aid: 0.2-2 part.
Described polypropylene recovery material is washing machine drum polypropylene salvage material or safety lever polypropylene salvage material.
Described starch is the mixing of one or more in the natural plant starch such as W-Gum, yam starch or wheat starch, and its water ratio is 10-20%.
Described compatilizer is maleic anhydride inoculated polypropylene, and its percentage of grafting is 0.6-1.5%.
Described polypropylene general oxidation inhibitor is 1010 or 168; Described processing aid is Zinic stearas or calcium stearate.
The preparation method of low odor polypropylene reclaimed materials of the present invention, comprises the following steps:
A, polypropylene recovery material, starch, compatilizer, polypropylene general oxidation inhibitor and processing aid are joined in mixing equipment by proportioning, mix;
B, melt extruded at 190-230 DEG C by said mixture material processing units screw extrusion press, rotating speed is 50-400 rev/min;
C, extrudate are through water cooling, and pelletizing, namely obtains low odor polypropylene reclaimed materials.
Compared with prior art, tool has the following advantages in the present invention:
1) the present invention by adding watery starch material in recovery polypropylene, the moisture in native starch is utilized to vaporize in melt-processed process, take the small-molecule substance that can produce smell in polypropylene recovery material out of material internal, thus obtain the polypropylene salvage material of low smell;
2) the polypropylene salvage material prepared by the present invention not only has low smell, and the rigidity obtaining material is improved largely.
Embodiment
Further illustrate the present invention below by embodiment, following examples are the present invention's preferably embodiment, but embodiments of the present invention are not by the restriction of following embodiment.
embodiment 1
Press row parts by weight and take each component:
The washing machine drum of 92 weight parts reclaims polypropylene, the yam starch (water ratio 20%) of 5 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 2 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is as follows:
After being mixed by above-mentioned each composition, join in twin screw extruder and extrude, the temperature of forcing machine is set as 200 DEG C, and rotating speed is 300rpm; Extrudate is through water cooling, and pelletizing, be namely enhanced tenacity-increased profax mixture.Its mechanical property parameters is as shown in table 1.
embodiment 2
Press row parts by weight and take each component:
The washing machine drum of 87 weight parts reclaims polypropylene, the yam starch (water ratio 16%) of 10 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 2 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
embodiment 3
Press row parts by weight and take each component:
The washing machine drum of 81 weight parts reclaims polypropylene, the yam starch (water ratio 13%) of 15 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 3 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
embodiment 4
Press row parts by weight and take each component:
The washing machine drum of 74 weight parts reclaims polypropylene, the yam starch (water ratio 10%) of 20 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 5 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
comparative example 1
Press row parts by weight and take each component:
The washing machine drum recovery polypropylene of 87 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 2 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
comparative example 2
Press row parts by weight and take each component:
The washing machine drum recovery polypropylene of 74 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 5 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
comparative example 3
Press row parts by weight and take each component:
The washing machine drum of 81 weight parts reclaims polypropylene, the yam starch (water ratio 5%) of 15 weight parts, the maleic anhydride inoculated polypropylene (percentage of grafting 1.0%) of 3 weight parts, the antioxidant 1010 of 0.5 weight part and the processing aid Zinic stearas of 0.5 weight part;
Its preparation technology is with embodiment 1, and mechanical property parameters is as shown in table 1.
Odor Evaluations method and standard:
The oder levels of material is divided into by standard: 1 grade: odorlessness, 2 grades: scent of, but non interference smell, 3 grades: have obvious smell, but non interference smell, 4 grades: have interference smell, 5 grades: have strong interference smell, 6 grades: have insupportable smell.Concrete grammar is: by above-mentioned for the 50g particle completing granulation, put into odor bottle, and to put in drying baker 2 hours into, the temperature of drying baker is arranged on (105 ± 2) DEG C, and tester will guarantee that sealing is tight.Tester is cooled to (65 ± 5) DEG C, removes lid a little after taking out from heating container, by being subject to the evaluating member nose of training from bottleneck (2 ~ 3) cm distance, assesses it.
Bending property presses GB/T9341-2008 test.
The bending property of table 1 various embodiments of the present invention and comparative example product and oder levels
As can be seen from the performance test results of above embodiment and comparative example, after adding the native starch of watery, not only the smell of material has obvious reduction, and the flexural strength of material and modulus in flexure are also significantly improved.

Claims (5)

1. a low odor polypropylene reclaimed materials, is characterized in that, counts by weight, comprises following component:
Polypropylene recovery material: 74-92 part;
Starch: 5-20 part;
Compatilizer: 1-5 part;
Polypropylene general oxidation inhibitor and processing aid: 0.2-2 part;
Described starch is the mixing of one or more in W-Gum, yam starch or wheat starch, and its water ratio is 10-20%.
2. low odor polypropylene reclaimed materials according to claim 1, is characterized in that, described polypropylene recovery material is washing machine drum polypropylene salvage material or safety lever polypropylene salvage material.
3. low odor polypropylene reclaimed materials according to claim 1, is characterized in that, described compatilizer is maleic anhydride inoculated polypropylene, and its percentage of grafting is 0.6-1.5%.
4. low odor polypropylene reclaimed materials according to claim 1, is characterized in that, described polypropylene general oxidation inhibitor is 1010 or 168; Described processing aid is Zinic stearas or calcium stearate.
5. the preparation method of the low odor polypropylene reclaimed materials described in any one of claim 1-4, is characterized in that: comprise the following steps:
A, polypropylene recovery material, starch, compatilizer, polypropylene general oxidation inhibitor and processing aid are joined in mixing equipment by proportioning, mix;
B, melt extruded at 190-230 DEG C by said mixture material processing units screw extrusion press, rotating speed is 50-400 rev/min;
C, extrudate are through water cooling, and pelletizing, namely obtains low odor polypropylene reclaimed materials.
CN201410142251.3A 2014-04-10 2014-04-10 A kind of low odor polypropylene reclaimed materials and preparation method thereof Active CN103910938B (en)

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Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN104311999B (en) * 2014-10-30 2016-08-24 苏州润佳工程塑料股份有限公司 A kind of Low-odor polypropylene material and preparation method thereof
CN106750954A (en) * 2016-12-26 2017-05-31 安徽元通采暖科技有限公司 Antistatic modified polypropylene processing method
CN108329578A (en) * 2017-01-20 2018-07-27 合肥杰事杰新材料股份有限公司 A kind of Low-odor polypropylene material and preparation method thereof
CN106995555A (en) * 2017-03-27 2017-08-01 浙江品瑶塑业有限公司 The high-strength polypropylene recovery material modified composite material of bloom and preparation method
CN112500638A (en) * 2020-11-30 2021-03-16 江苏金发科技新材料有限公司 Low-odor good-appearance environment-friendly polypropylene material and preparation method thereof

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JP3398860B2 (en) * 1998-06-24 2003-04-21 株式会社プラスト Biodegradable resin foam
CN1609138A (en) * 2002-12-10 2005-04-27 细胞树脂技术有限责任公司 Grafted cyclodextrin
JP3911590B2 (en) * 2002-05-13 2007-05-09 株式会社昭和丸筒 Method for producing resin molded product containing natural fiber such as waste paper and composition for producing the molded product
CN102604231A (en) * 2012-03-29 2012-07-25 广州市塑料工业股份有限公司 Degradable environment-friendly plastic and preparation method of degradable environment-friendly plastic
CN103044793A (en) * 2011-10-17 2013-04-17 金发科技股份有限公司 Low-odor low-VOC (volatile organic compound)-content styrene polymer composition and preparation method thereof

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Publication number Priority date Publication date Assignee Title
JP3398860B2 (en) * 1998-06-24 2003-04-21 株式会社プラスト Biodegradable resin foam
JP3911590B2 (en) * 2002-05-13 2007-05-09 株式会社昭和丸筒 Method for producing resin molded product containing natural fiber such as waste paper and composition for producing the molded product
CN1609138A (en) * 2002-12-10 2005-04-27 细胞树脂技术有限责任公司 Grafted cyclodextrin
CN103044793A (en) * 2011-10-17 2013-04-17 金发科技股份有限公司 Low-odor low-VOC (volatile organic compound)-content styrene polymer composition and preparation method thereof
CN102604231A (en) * 2012-03-29 2012-07-25 广州市塑料工业股份有限公司 Degradable environment-friendly plastic and preparation method of degradable environment-friendly plastic

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