CN103087494B - Polymethyl ethylene carbonate modification method, modified material and application thereof - Google Patents
Polymethyl ethylene carbonate modification method, modified material and application thereof Download PDFInfo
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- CN103087494B CN103087494B CN201310029328.1A CN201310029328A CN103087494B CN 103087494 B CN103087494 B CN 103087494B CN 201310029328 A CN201310029328 A CN 201310029328A CN 103087494 B CN103087494 B CN 103087494B
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- ethylene carbonate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a polymethyl ethylene carbonate modification method, a modified material and application thereof. The modification method comprises the following steps of: mixing polymethyl ethylene carbonate with a modifying agent; and fusing and melting at 110-140 DEG C to obtain a modified material of the polymethyl ethylene carbonate, wherein the modifying agent comprises one or more of polyethylene, a polyolefin plastomer, a polyolefin elastomer, an ethylene-vinyl acetate copolymer, an ethylene acrylic acid copolymer, a maleic anhydride grafted polyethylene and a maleic anhydride grafted ethylene-octylene copolymer. The polymethyl ethylene carbonate modification method provided by the invention is simple in process, easy to control and low in cost; the modified material is free of peculiar smell, can be used as a middle partition layer with excellent performance, can be used for preparing a cosmetic hose, is capable of greatly broadening the application of a carbon dioxide-based copolymer, high in partition performance and biodegradable. Besides, the polymethyl ethylene carbonate modification method is safe and environmentally-friendly; the partition performance and bonding performance of the modified material are excellent; and the product performance can be controlled.
Description
Technical field
The present invention relates to cosmetic tube Material Field, particularly relate to a kind of lined polymethyl ethylene carbonate method of modifying, material and application.
Background technology
Due to the coextrusion composite hose (i.e. cosmetic tube) for products such as makeup, to resistance oxygen, block water, the barrier property such as choke has very high requirement, so generally all adopt the industrial raw material of material as cosmetic tube of better performances.Ethylene-vinyl alcohol copolymer (EVOH), due to its outstanding gas barrier property, excellent oil resistant and organic solvent resistance, becomes barrier material the most frequently used in industrial production.But EVOH price is higher, by force moisture-sensitive, after moisture absorption, barrier property declines, and reclaims difficulty, and its waste can bring serious pollution to environment.So urgently find, a kind of barrier property is better, over-all properties is more excellent, the barrier material of low-carbon environment-friendly substitutes.
Lined polymethyl ethylene carbonate (PPC) a kind ofly has excellent choke block-water performance and biodegradable carbonic acid gas base co-polymer.PPC adopts carbonic acid gas and propylene oxide monomer by polyreaction synthesis preparation, can efficiently stabilizing carbon dioxide, the significantly exhaust gas emission of minimizing industrial carbon dioxide, and protection of the environment, is expected to the novel environment friendly barrier material becoming alternative EVOH.But also there is shortcoming in PPC: because PPC is a kind of amorphous polymer, its second-order transition temperature is lower, mechanical property and thermal stability poor, barrier property has much room for improvement, cannot be used alone, and the PPC raw material smell of domestic supply is heavier, significantly limit its application in high-end coextrusion composite hose used for cosmetic.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of lined polymethyl ethylene carbonate method of modifying, material and application, be intended to solve existing polymethyl ethylene carbonate material mechanical property and poor heat stability, peculiar smell is heavy, barrier property is not high problem.
Technical scheme of the present invention is as follows:
A kind of lined polymethyl ethylene carbonate method of modifying, wherein, comprise step: mixed with properties-correcting agent by lined polymethyl ethylene carbonate, and under 110 ~ 140 DEG C of conditions, carrying out the material modified of melting mixing acquisition lined polymethyl ethylene carbonate, described properties-correcting agent comprises one or more in polyethylene, polyolefin plastomers, polyolefin elastomer, ethylene-vinyl acetate copolymer, ethylene acrylic acid co polymer, maleic anhydride grafted polyethylene, maleic anhydride grafted ethene-octene copolymer.
Described lined polymethyl ethylene carbonate method of modifying, wherein, by mass percentage, described lined polymethyl ethylene carbonate accounts for 60% ~ 95%, and properties-correcting agent accounts for 5% ~ 40%.
Described lined polymethyl ethylene carbonate method of modifying, wherein, by mass percentage, described lined polymethyl ethylene carbonate accounts for 65 ~ 80%, and properties-correcting agent accounts for 20 ~ 35%.
A kind of lined polymethyl ethylene carbonate is material modified, wherein, adopts the method for claim 1 to prepare.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, using the raw material in material modified for the described lined polymethyl ethylene carbonate obstruct middle layer as preparation cosmetic tube.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, the pipe shaft of described cosmetic tube comprises five layers from outside to inside successively: outer, outer bonding coat, obstruct middle layer, interior bonding coat and internal layer, the thickness of described pipe shaft is 0.5 ~ 1.0mm, outer field thickness is greater than 0.2mm, the thickness in described obstruct middle layer is greater than 0.1mm, and described outer field thickness is greater than 0.15mm.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, the raw materials of described outer bonding coat and interior bonding coat is through anhydride modified linear low-density polyethylene polymer.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, the raw materials of described skin and internal layer is polypropylene or polyethylene or polypropylene and poly blend.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, the preparation process of the pipe shaft of described cosmetic tube comprises: the raw materials of each layer is carried out melting treatment from corresponding screw extrusion press, melt after melting treatment to be confluxed to multilayer co-extruding machine head coextrusion after mixing, after stretched, cooling, Vacuum shaping, thermal treatment, traction, fixed length cutting, obtained described pipe shaft.
The application that described lined polymethyl ethylene carbonate is material modified, wherein, the vacuum pressure of Vacuum shaping controls at 0.003 ~-0.001MPa.
Beneficial effect: lined polymethyl ethylene carbonate method of modifying technique provided by the invention is simple, easy-regulating, cost are low, material modified free from extraneous odour, can be used as the obstruct middle layer of excellent property, for the preparation of cosmetic tube, greatly widen the application of carbonic acid gas base co-polymer, barrier property is high, and biodegradable, safety and environmental protection of the present invention, modified material block performance and bond properties is excellent, product performance are controlled.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cross section of cosmetic tube prepared by the present invention.
Fig. 2 is the structural representation of the production unit of cosmetic tube of the present invention.
Fig. 3 is the Photomicrograph of the longitudinal cross-section of the cosmetic tube of preparation in the embodiment of the present invention 1.
Fig. 4 is the Photomicrograph of the longitudinal cross-section of the cosmetic tube of preparation in the embodiment of the present invention 2.
Fig. 5 is the Photomicrograph of the longitudinal cross-section of the cosmetic tube of preparation in the embodiment of the present invention 3.
Embodiment
The invention provides a kind of lined polymethyl ethylene carbonate method of modifying, material and application, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Lined polymethyl ethylene carbonate method of modifying provided by the invention, comprise step: mixed with properties-correcting agent by lined polymethyl ethylene carbonate, and under 110 ~ 140 DEG C of conditions, carrying out the material modified of melting mixing acquisition lined polymethyl ethylene carbonate, described properties-correcting agent comprises one or more in polyethylene, polyolefin plastomers, polyolefin elastomer, ethylene-vinyl acetate copolymer, ethylene acrylic acid co polymer, maleic anhydride grafted polyethylene, maleic anhydride grafted ethene-octene copolymer.
Further, by mass percentage, described lined polymethyl ethylene carbonate accounts for 60% ~ 95%, properties-correcting agent accounts for 5% ~ 40%, under this ratio, the good flowing properties that the lined polymethyl ethylene carbonate generated is material modified, and high with the consistency of tackiness agent, thus solve the problem of lined polymethyl ethylene carbonate starting material and the easy layering of polyethylene compound tense.
Further, by mass percentage, described lined polymethyl ethylene carbonate accounts for 65 ~ 80%, and properties-correcting agent accounts for 20 ~ 35%.Under this ratio, the material modified performance of the lined polymethyl ethylene carbonate prepared is more excellent, and mechanical property and thermal stability significantly improve, and barrier property performance is better, and peculiar smell is less.
Lined polymethyl ethylene carbonate modification procedure of the present invention directly realizes in screw extrusion press, it is specially: first get out lined polymethyl ethylene carbonate and properties-correcting agent, then after super-dry, weighing, premix, lined polymethyl ethylene carbonate and properties-correcting agent are put into simultaneously and extrudes the single screw extrusion machine intercepting middle layer and carry out melting mixing thus obtained lined polymethyl ethylene carbonate is material modified, and material modified for lined polymethyl ethylene carbonate directly confluxing to multilayer co-extruding machine head is formed the obstruct middle layer of cosmetic tube.
As the application that lined polymethyl ethylene carbonate of the present invention is material modified, cosmetic tube of the present invention comprises tube head and pipe shaft, wherein, pipe shaft is five layers of composite structure, as shown in Figure 1, these five layers of composite structures comprise from outside to inside successively: outer 15, bonding coat 14(is also known as outer bonding coat 14), intercept middle layer 13, bonding coat 12(is also known as interior bonding coat 12), internal layer 11, namely intercept middle layer adopts aforesaid lined polymethyl ethylene carbonate material modified obtained, material that is outer and internal layer is polypropylene or polyethylene or polypropylene and poly blend, the material of bonding coat is tackiness agent.
Tackiness agent in the present invention preferably adopts anhydride modified linear low-density polyethylene polymer, linear low-density polyethylene polymer (Linear Low Density Polyethylene, LLDPE), it is the multipolymer that ethene and a small amount of senior ɑ-alkene are polymerized in the presence of a catalyst, after anhydride modified, interface compatibility and the adhesiveproperties of linear low-density polyethylene polymer and other materials can be improved, and greatly improve the barrier property of matrix material.
In these five layers of composite structures, the material of adjacent layers is different, and to improve composite effect, and tackiness agent is not arranged on internal layer or skin.
The pipe shaft thickness of cosmetic tube of the present invention is generally 0.5mm to 1.0mm, and wherein, the thickness of internal layer is greater than 0.2mm, and the thickness intercepting middle layer is greater than 0.1mm, and outer field thickness is greater than 0.15mm.
Illustrate the technique utilizing the material modified and other materials production cosmetic tube of described lined polymethyl ethylene carbonate below.
As shown in Figure 2, Fig. 2 is the production unit structural representation of the present invention's five layers of composite soft tube pipe shaft, as shown in the figure, this production unit comprise four screw extrusion presss, a set of multi-layer co-extruded head 7, stretch cooling and vacuum sizing device (be 8 by stretching refrigerating unit and vacuum sizing device in the lump label), thermal treatment unit, towing mechanism 9 and fixed-length cutting device 10; Four above-mentioned screw extrusion presss are the first screw extrusion press 1, second screw extrusion press 2, three-screw extruder 5, four screw extruder 6, further, the position of the extruder head of each screw extrusion press in the past after sort and be followed successively by: the extruder head of the first screw extrusion press, the first extruder head 3 of the second screw extrusion press, the extruder head of three-screw extruder, the second extruder head 4 of the second screw extrusion press, the extruder head of four screw extruder.
Internal layer is extruded by screw extrusion press 1, bonding coat by screw extrusion press 2 extrude rear material shunt again respectively from the first extruder head 3 and the second extruder head 4 extrude formed in bonding coat and outer bonding coat, intercept middle layer to extrude from three-screw extruder 5, skin is then extruded by screw extrusion press 6, five layer materials conflux in multilayer co-extruding machine head 7, the sizing of pipe shaft is realized after the process of drawn cooling and vacuum sizing device 8, after thermal treatment, through the traction of towing mechanism 9 and the fixed length cutting of fixed-length cutting device 10, the pipe shaft of obtained cosmetic tube.Namely the flexible pipe pipe shaft obtained through aforesaid method obtain cosmetic tube finished product again after the operations such as head, printing, post-treatment, packaging.
In above-mentioned steps, the vacuum pressure that vacuum sizing device controls remains between 0.003MPa ~-0.001MPa, and in addition, thermal treatment is that employing 20 ~ 40 DEG C of warm water heat.Adopt above-mentioned vacuum-treat and heat treatment process, can be good at the problem solving peculiar smell residual in lined polymethyl ethylene carbonate starting material, thus extend the range of application of this cosmetic tube in the field of guarantee.And above-mentioned technological process safety, environmental protection, eliminate the gas of peculiar smell, the course of processing is simple, processing parameter easily controls, in Screw Extrusion, the microtexture of matrix material under melting mixing effect can directly retain in the product, thus realizes the controllability by the control realization product performance of morphological structure.
The present invention is owing to adopting lined polymethyl ethylene carbonate material modified as intercepting middle layer, and unconventional petroleum base EVOH, due to lined polymethyl ethylene carbonate is material modified can effective stabilizing carbon dioxide, thus significantly reduce the discharge of CO 2 waste gas, reduce the Greenhouse effect of carbonic acid gas generation to the impact of environment.
With specific embodiment, the present invention is illustrated below.
Embodiment 1
After super-dry, metering, by mass percentage, by lined polymethyl ethylene carbonate and polyolefin plastomers (melting index is 1.0) with the ratio premix of 70:30, and drop in three-screw extruder 5 hopper, form blend through melting mixing, coextrusion is formed and intercepts middle layer.Wherein, three-screw extruder 5 diameter 35mm, length-to-diameter ratio 26.Also internal layer and outer field raw materials to be put into respectively in the first screw extrusion press 1 in four screw extruder 6 simultaneously, the raw materials of bonding coat is put in the second screw extrusion press 2, wherein, internal layer and outer field raw materials are the blend of Low Density Polyethylene and linear low density polyethylene, the melting index of Low Density Polyethylene is 1.84 ~ 2.5, the melting index of linear low density polyethylene is 2.0 ± 0.3, the raw materials of bonding coat to be melting index be 1.8 acid anhydride-grafted linear low density polyethylene.
The first screw extrusion press 1 wherein and the barrel zone temperature of four screw extruder 6 are set to 145 ~ 155 DEG C, the barrel zone temperature of the second screw extrusion press 2 is set to 150 ~ 180 DEG C, the barrel zone temperature of three-screw extruder 5 is set to 110 ~ 130 DEG C, the vacuum pressure of Vacuum shaping is 0.003 ~-0.001MPa, thermal treatment adopts 20 ~ 40 DEG C of warm water, and multi-layer co-extruded head 7 temperature is set as between 150 ~ 180 DEG C.
The cosmetic tube prepared according to the method described above, intercept middle layer and internal layer and outer bound effect better, its result can be as can be seen from Figure 3, interface between each layer and thickness distribution, flow interface is stablized, and thickness distribution is even, internal layer thickness is 0.22 mm, intermediate layer thickness is 0.13 mm, and outer layer thickness is 0.17 mm, meets cosmetic tube requirement used for cosmetic.
Embodiment 2
Coextrusion process process is substantially the same manner as Example 1, and difference is that the material in obstruct middle layer is different.In the present embodiment, the blending ratio of lined polymethyl ethylene carbonate and polyolefin plastomers is 80:20, and other layers of materials are identical with embodiment 1.
Moulding process controls at 105 ~ 125 DEG C for extruding the second screw extrusion press temperature intercepting middle layer, and other processing parameters are identical.
Can find from Fig. 4, when lined polymethyl ethylene carbonate content increases, polyolefin plastomer body burden reduces, intercept middle layer not weaken with outer bound effect with interior, flow interface is stablized, thickness distribution slightly changes, and internal layer thickness is 0.24 mm, and intermediate layer thickness is 0.11 mm, outer layer thickness is 0.17 mm, still can meet cosmetic tube requirement.
Embodiment 3
Coextrusion process process is substantially the same manner as Example 1, and difference is that the material in obstruct middle layer is different.In the present embodiment, properties-correcting agent selects ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene, the blending ratio of lined polymethyl ethylene carbonate, ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene is 70:20:10, and other layers of materials are identical with embodiment 1.
Moulding process controls at 110 ~ 130 DEG C for extruding the second screw extrusion press temperature intercepting middle layer, and other processing parameters are identical.
Can find from Fig. 5, ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene, as properties-correcting agent, are extruded stable, good with lined polymethyl ethylene carbonate consistency, hose thickness is evenly distributed, and internal layer thickness is 0.25 mm, intermediate layer thickness is 0.10mm, and outer layer thickness is 0.16 mm.
In sum, lined polymethyl ethylene carbonate method of modifying technique provided by the invention is simple, easy-regulating, cost are low, material modified free from extraneous odour, can be used as the obstruct middle layer of excellent property, for the preparation of cosmetic tube, greatly widened the application of carbonic acid gas base co-polymer, barrier property is high, and biodegradable, safety and environmental protection of the present invention, modified material block performance and bond properties is excellent, product performance are controlled.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (1)
1. the preparation method of a cosmetic tube pipe shaft, it is characterized in that, comprise step: after drying, lined polymethyl ethylene carbonate is mixed with properties-correcting agent, and dropping in three-screw extruder hopper, three-screw extruder diameter is 35mm, and length-to-diameter ratio is 26, carry out the material modified coextrusion formation obstruct middle layer that melting mixing obtains lined polymethyl ethylene carbonate, described properties-correcting agent is ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene; By mass percentage, the blending ratio of lined polymethyl ethylene carbonate, ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene is 70:20:10; The material modified of lined polymethyl ethylene carbonate is prepared cosmetic tube as obstruct middle layer;
Cosmetic tube internal layer and outer field raw materials are put into the first screw extrusion press respectively to neutralize in four screw extruder, put into by the raw materials of bonding coat in the second screw extrusion press, internal layer and outer field raw materials are the blend of Low Density Polyethylene and linear low density polyethylene; The melting index of Low Density Polyethylene is 1.84 ~ 2.5, and the melting index of linear low density polyethylene is 2.0 ± 0.3, the raw materials of bonding coat to be melting index be 1.8 acid anhydride-grafted linear low density polyethylene;
The barrel zone temperature of the first screw extrusion press and four screw extruder is set to 145 ~ 155 DEG C, and the barrel zone temperature of the second screw extrusion press is set to 110 ~ 130 DEG C, and the barrel zone temperature of three-screw extruder is set to 110 ~ 130 DEG C;
Melt after melting treatment to be confluxed to multilayer co-extruding machine head coextrusion after mixing, after stretched, cooling, Vacuum shaping, thermal treatment, traction, fixed length cutting, obtain the pipe shaft of cosmetic tube; The vacuum pressure of Vacuum shaping controls at 0.003 ~-0.001MPa; Thermal treatment adopts 20 ~ 40 DEG C of warm water, and multi-layer co-extruded head temperature is set as between 150 ~ 180 DEG C;
Internal layer thickness is 0.25mm, and intermediate layer thickness is 0.10mm, and outer layer thickness is 0.16mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104387737A (en) * | 2014-11-13 | 2015-03-04 | 中国科学院长春应用化学研究所 | Reinforced modified poly(propylene carbonate) composition and preparation method thereof |
| KR102116009B1 (en) | 2016-03-08 | 2020-05-27 | 주식회사 엘지화학 | Multilayer film comprising polyalkylene carbonate and manufacturing method of the same |
| CN107650360A (en) * | 2017-09-27 | 2018-02-02 | 华南理工大学 | A kind of degradable poly methyl ethylene carbonate base microbedding coextruding composite material and preparation method thereof |
| CN107868425A (en) * | 2017-10-12 | 2018-04-03 | 杭州师范大学 | A kind of high-performance polymethyl ethylene carbonate material and preparation method thereof |
| CN108395559B (en) * | 2018-03-22 | 2020-12-22 | 常德市金润新材料科技有限公司 | High-performance high-barrier food packaging film and preparation method thereof |
| CN109438954B (en) * | 2018-11-13 | 2020-12-15 | 金发科技股份有限公司 | Polycarbonate alloy and preparation method thereof |
| CN114474926A (en) * | 2021-12-29 | 2022-05-13 | 深圳市力合科创股份有限公司 | Composite plastic hose |
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| CN102431706A (en) * | 2011-10-10 | 2012-05-02 | 深圳市通产丽星股份有限公司 | Packing hose |
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| PT2627713T (en) * | 2010-10-11 | 2019-09-27 | Novomer Inc | Polymer blends |
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| CN102431706A (en) * | 2011-10-10 | 2012-05-02 | 深圳市通产丽星股份有限公司 | Packing hose |
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