CN104312107A - Degradable modified PET material and preparation method thereof - Google Patents
Degradable modified PET material and preparation method thereof Download PDFInfo
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- CN104312107A CN104312107A CN201410486444.0A CN201410486444A CN104312107A CN 104312107 A CN104312107 A CN 104312107A CN 201410486444 A CN201410486444 A CN 201410486444A CN 104312107 A CN104312107 A CN 104312107A
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- isosorbide
- maleic anhydride
- anhydride polyester
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Abstract
The invention provides a degradable modified PET material and a preparation method thereof. The PET material comprises raw materials of polyethylene polyethylene glycol terephthalate, isosorbide-maleic anhydride polyester and a coupling agent hexamethylene diisocyanate. The preparation method comprises the following steps of: a) preparing a mixed material, and b) conducting blending extrusion for preparation of a finished product. The invention discloses the biodegradable PET modified material and the preparation method thereof. The PET material is prepared by a chemical blending method, which is simple for production and efficient; the prepared PET material not only has excellent processing properties, but also has good water resistance, acid and alkali resistance, biological degradation and broad application prospects.
Description
Technical field
The present invention relates to a kind of PET material, particularly relate to a kind of degradable modified PET material and preparation method thereof, belong to plastic material technical field.
Background technology
Polyethylene terephtalate is a kind of important engineering plastics, it has excellent physical and mechanical properties in wide temperature range, under high-temperature high-frequency, still can keep excellent electrical insulation capability, be widely used in the every profession and trades such as electronics, food, medicine, office appliance, toy by the PET sheet that it is produced.But PET is very slow at occurring in nature degradation speed, to environment, therefore need to carry out necessary modification to PET, to improve the degradation property of PET, reduce environmental pollution.
In current art, in order to solve the pollution of waste PET material, biomass resource and synthetic polymer can be prepared into biodegradable shaped material by blended, wherein, often to possess higher thermostability as material modified biomass resource, and can be biodegradable.In recent years, although more emerging degradable PET material achieve certain biodegradability, Drawing abillity, water resistance are good not, and major cause is as follows: one is adopt physical blending method to be prepared; Two is that the material modified performance selected has much room for improvement; Three is that in preparation process, the control of blending polymerization temperature is reasonable not; Four is react too violent in preparation process, and reaction conditions is wayward.
Summary of the invention
For the demand, the invention provides a kind of degradable modified PET material and preparation method thereof, this PET material adopts chemical blend method to be prepared, produce simple, efficient, obtained PET material not only has excellent processing characteristics, and there is good water tolerance, resistance to acids and bases and biological degradability, have a extensive future.
The present invention is a kind of degradable modified PET material and preparation method thereof, the feed composition that described PET material comprises has: polyethylene terephthalate, Isosorbide-maleic anhydride polyester, coupling agent hexamethylene diisocyanate, described preparation method comprises the steps: a) to produce mixture, b) blending extrusion preparing finished articles.
In a preferred embodiment of the present invention, the weight percent of the feed composition that described PET material comprises is: polyethylene terephthalate 65.8 ~ 67.9%, Isosorbide-maleic anhydride polyester 28.2 ~ 29.1%, hexamethylene diisocyanate 3 ~ 6%.
In a preferred embodiment of the present invention, the relative molecular mass of described Isosorbide-maleic anhydride polyester is 5700, and the mass ratio of itself and polyethylene terephthalate is 3:7.
In a preferred embodiment of the present invention, in described step a), producing mixture is PET raw material, Isosorbide-maleic anhydride polyester and hexamethylene diisocyanate are put into the self-styled band of polyethylene by quality proportioning mix and leave standstill 12h.
In a preferred embodiment of the present invention, in described step b), the processing condition of blending extrusion preparing finished articles are: temperature of reaction 255 DEG C, blending extrusion time 5min.
Present invention is disclosed a kind of degradable modified PET material and preparation method thereof, this PET material adopts chemical blend method to be prepared, produce simple, efficient, obtained PET material not only has excellent processing characteristics, and there is good water tolerance, resistance to acids and bases and biological degradability, have a extensive future.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the process figure of embodiment of the present invention degradable modified PET material preparation method.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Fig. 1 is the process figure of embodiment of the present invention degradable modified PET material preparation method; The feed composition that this PET material comprises has: polyethylene terephthalate, Isosorbide-maleic anhydride polyester, coupling agent hexamethylene diisocyanate, described preparation method comprises the steps: a) to produce mixture, b) blending extrusion preparing finished articles.
Degradable modified PET materials'use Isosorbide-maleic anhydride polyester modification polyethylene terephthalate that the present invention mentions, is prepared by the method for Reaction extrusion.Owing to being adopt the method for chemical blend Isosorbide-maleic anhydride polyester and PET direct reaction to be extruded, therefore the composition content improving Isosorbide in modified PET material can be beneficial to, increase the relative molecular mass of PET polymeric material, be beneficial to the processing characteristics being improved PET material by control crystallinity; Meanwhile, Isosorbide-maleic anhydride polyester and PET have good consistency, and Isosorbide-maleic anhydride polyester is a phase structure, ensure that the stability of the structure properties of modified PET material.Through modified, this degradable modified PET material has better crystal property, water resistance, resistance to acids and bases and biological degradability.The weight percent of the feed composition that this degradable modified PET material comprises is: polyethylene terephthalate 65.8 ~ 67.9%, Isosorbide-maleic anhydride polyester 28.2 ~ 29.1%, hexamethylene diisocyanate 3 ~ 6%.Wherein, the relative molecular mass of Isosorbide-maleic anhydride polyester is 5700, and the mass ratio of itself and polyethylene terephthalate is 3:7; Hexamethylene diisocyanate has higher reactive behavior, and the linked reaction of itself and PET and Isosorbide-maleic anhydride polyester can be carried out in shorter time, reaches best reaction effect.
Embodiment 1
Concrete preparation method is as follows:
A) produce mixture, concrete preparation process is: by weight percentage, first takes the polyethylene terephthalate of 65.8%, the Isosorbide-maleic anhydride polyester of 28.2%, the hexamethylene diisocyanate of 6%; Then polyethylene terephthalate and Isosorbide-maleic anhydride polyester are put in the self-styled band of polyethylene, then add hexamethylene diisocyanate, mix rear standing 12h, obtain mixture stand-by.
B) blending extrusion preparing finished articles, concrete preparation process is: mixture step a) produced puts into forcing machine, and under 255 DEG C of temperature of reaction, blending extrusion 5min can obtain degradable modified PET material.There is halohydantoinylated reaction indeed through the isocyanate group of coupling agent and the hydroxyl of PET and Isosorbide-maleic anhydride polyester and obtain in the preparation of this degradable modified PET material, Isosorbide-maleic anhydride polyester is then incorporated into PET with the form of uride key.
Embodiment 2
Concrete preparation method is as follows:
A) produce mixture, concrete preparation process is: by weight percentage, first takes the polyethylene terephthalate of 67.9%, the Isosorbide-maleic anhydride polyester of 29.1%, the hexamethylene diisocyanate of 3%; Then polyethylene terephthalate and Isosorbide-maleic anhydride polyester are put in the self-styled band of polyethylene, then add hexamethylene diisocyanate, mix rear standing 12h, obtain mixture stand-by.
B) blending extrusion preparing finished articles, concrete preparation process is: mixture step a) produced puts into forcing machine, and under 255 DEG C of temperature of reaction, blending extrusion 5min can obtain degradable modified PET material.There is halohydantoinylated reaction indeed through the isocyanate group of coupling agent and the hydroxyl of PET and Isosorbide-maleic anhydride polyester and obtain in the preparation of this degradable modified PET material, Isosorbide-maleic anhydride polyester is then incorporated into PET with the form of uride key.
Present invention is disclosed a kind of degradable modified PET material and preparation method thereof, this PET material adopts chemical blend method to be prepared, produce simple, efficient, obtained PET material not only has excellent processing characteristics, and there is good water tolerance, resistance to acids and bases and biological degradability, have a extensive future.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (5)
1. degradable modified PET material and preparation method thereof, it is characterized in that, the feed composition that described PET material comprises has: polyethylene terephthalate, Isosorbide-maleic anhydride polyester, coupling agent hexamethylene diisocyanate, described preparation method comprises the steps: a) to produce mixture, b) blending extrusion preparing finished articles.
2. degradable modified PET material according to claim 1 and preparation method thereof, it is characterized in that, the weight percent of the feed composition that described PET material comprises is: polyethylene terephthalate 65.8 ~ 67.9%, Isosorbide-maleic anhydride polyester 28.2 ~ 29.1%, hexamethylene diisocyanate 3 ~ 6%.
3. degradable modified PET material according to claim 1 and preparation method thereof, is characterized in that, the relative molecular mass of described Isosorbide-maleic anhydride polyester is 5700, and the mass ratio of itself and polyethylene terephthalate is 3:7.
4. degradable modified PET material according to claim 1 and preparation method thereof, it is characterized in that, in described step a), producing mixture is PET raw material, Isosorbide-maleic anhydride polyester and hexamethylene diisocyanate are put into the self-styled band of polyethylene by quality proportioning mix and leave standstill 12h.
5. degradable modified PET material according to claim 1 and preparation method thereof, is characterized in that, in described step b), the processing condition of blending extrusion preparing finished articles are: temperature of reaction 255 DEG C, blending extrusion time 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410486444.0A CN104312107A (en) | 2014-09-23 | 2014-09-23 | Degradable modified PET material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410486444.0A CN104312107A (en) | 2014-09-23 | 2014-09-23 | Degradable modified PET material and preparation method thereof |
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| CN104312107A true CN104312107A (en) | 2015-01-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298426A (en) * | 1998-04-23 | 2001-06-06 | 纳幕尔杜邦公司 | Polyesters including isosorbide as a comonomer blended with other thermoplastic polymers |
| CN102604344A (en) * | 2012-02-24 | 2012-07-25 | 清华大学深圳研究生院 | Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof |
| CN103044669A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Method for preparing polyester containing isosorbide |
-
2014
- 2014-09-23 CN CN201410486444.0A patent/CN104312107A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298426A (en) * | 1998-04-23 | 2001-06-06 | 纳幕尔杜邦公司 | Polyesters including isosorbide as a comonomer blended with other thermoplastic polymers |
| CN103044669A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Method for preparing polyester containing isosorbide |
| CN102604344A (en) * | 2012-02-24 | 2012-07-25 | 清华大学深圳研究生院 | Polycaprolactone/poly (butylene succinate) composite material and preparation method thereof |
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Application publication date: 20150128 |