Poly (carbonate-ether)tetrahydric alcohol, preparation method of poly (carbonate-ether)tetrahydric alcohol and carbon dioxide based shape memory polyurethane

A carbon dioxide and carbonate technology, applied in the field of organic synthesis, can solve the problems of difficult molecular structure, high cost, long synthesis cycle, etc., and achieve the effects of adjustable shape recovery performance, reduced production cost, and excellent shape memory performance.

Active Publication Date: 2015-04-01
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, we must point out that the existing chemically cross-linked shape memory polyurethane uses a polyester-type macromolecular cross-linking agent or a polyether-type macromolecular cross-linking agent, which has a long synthesis cycle and high cost, and it is diff

Method used

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  • Poly (carbonate-ether)tetrahydric alcohol, preparation method of poly (carbonate-ether)tetrahydric alcohol and carbon dioxide based shape memory polyurethane
  • Poly (carbonate-ether)tetrahydric alcohol, preparation method of poly (carbonate-ether)tetrahydric alcohol and carbon dioxide based shape memory polyurethane
  • Poly (carbonate-ether)tetrahydric alcohol, preparation method of poly (carbonate-ether)tetrahydric alcohol and carbon dioxide based shape memory polyurethane

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Example Embodiment

[0050] The present invention provides a preparation method of poly(carbonate-ether) tetraol, including the following steps:

[0051] Zn-based 3 [Co(CN) 6 ] 2 In the presence of the double metal cyanide catalyst, the tetracarboxylic acid compound is used as the chain transfer agent, and the carbon dioxide and the epoxy compound are polymerized to obtain the poly(carbonate-ether) tetraol described above.

[0052] The present invention has no special restrictions on the carbon dioxide, as long as the carbon dioxide is well known to those skilled in the art. In the present invention, the pressure of the carbon dioxide is preferably 2 MPa to 10 MPa, more preferably 3 MPa to 7 MPa.

[0053] In the present invention, the epoxy compound preferably includes one or more of ethylene oxide, propylene oxide, butylene oxide, cyclohexane oxide and epichlorohydrin, and more preferably includes ethylene oxide. One or more of alkane, propylene oxide and epichlorohydrin.

[0054] In the present inventi...

Example Embodiment

[0090] Example 1 (Preparation of rare earth doped Y-DMC)

[0091] Add 0.78g (0.004mol) YCl 3 And 11.42g (0.084mol) ZnCl 2 Dissolved in a mixed solution of 60mL deionized water and 30mL tert-butanol, the resulting solution was heated to 50 ℃ and kept constant for 20 minutes, and then under stirring (300rpm) using a dropping funnel to add 1.32g (0.004 mol) analytical pure K 3 [Co(CN) 6 ] And 20mL of deionized water. The solution was added dropwise for 45 minutes, keeping the reaction constant at 50°C, stirring for 1 hour to obtain a suspension; centrifuge the obtained suspension with a centrifuge (5000 rpm) for 10 minutes, and pour out the separated clear liquid , The sediments were washed 5 times with 60mL 50℃ TBA and H2O mixed solution chemical slurry, and finally washed with TBA chemical slurry once, TBA and H 2 TBA and H in the mixed solution of O 2 The volume ratio of O is 30 / 30, 40 / 20, 50 / 10, 60 / 0, the stirring speed during the washing process is 5000rpm, the centrifugal separ...

Example Embodiment

[0092] Example 2 (Preparation of rare earth-doped Nd-DMC)

[0093] 0.1g (0.004mol) Nd(NO 3 ) 3 And 11.42g (0.084mol) ZnCl 2 Dissolved in a mixed solution of 60mL deionized water and 30mL tert-butanol, the resulting solution was heated to 50 ℃ and kept constant for 20 minutes, and then under stirring (300rpm) using a dropping funnel to add 1.32g (0.004 mol) analytical pure K 3 [Co(CN) 6 ] And 20mL of deionized water. The solution was added dropwise for 45 minutes, keeping the reaction constant at 50°C, stirring for 1 hour to obtain a suspension; centrifuge the obtained suspension with a centrifuge (5000 rpm) for 10 minutes, and pour out the separated clear liquid , The sediment was used 60mL 50℃ TBA and H 2 The mixed solution of O is washed 5 times with chemical pulp, and finally with TBA chemical pulp once, TBA and H 2 TBA and H in the mixed solution of O 2 The volume ratio of O is 30 / 30, 40 / 20, 50 / 10, 60 / 0, the stirring speed during the washing process is 5000rpm, the centrifugal...

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Abstract

The invention provides poly (carbonate-ether)tetrahydric alcohol with a structure as formula I. The invention provides carbon dioxide based shape memory polyurethane which is prepared with a preparation method comprising steps as follows: poly (carbonate-ether)tetrahydric alcohol, crystallized dihydric alcohol and diisocyanate react, and the carbon dioxide based shape memory polyurethaneis obtained. The poly (carbonate-ether)tetrahydric alcohol is taken as a macromolecule crosslinking agent, can accurately control the molecular weight, has characteristics of polyether polyol and polyester polyol and can accurately control the molecular weight as well as the content of a carbonic ester unit and ether bond, and the shape memory and the shape restorability of the carbon dioxide based shape memory polyurethane prepared from the poly (carbonate-ether)tetrahydric alcohol serving as the raw material can be adjusted. Besides, the production cost of the poly (carbonate-ether)tetrahydric alcohol is reduced due to introduction of carbon dioxide, and the carbon dioxide based shape memory polyurethane has large-scale application prospect; and the poly (carbonate-ether)tetrahydric alcoholis taken as the raw material for synthesizing shape memory polyurethane, and the industrialization process of the shape memory polyurethane is promoted.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a poly(carbonate-ether) tetrahydric alcohol, a preparation method thereof and a carbon dioxide-based shape-memory polyurethane. Background technique [0002] Shape memory polyurethanes (SMPs) are a class of polymer materials that deform and fix into a temporary shape under certain conditions, and return to their original permanent shape when subjected to external stimuli (heat, light, etc.). Compared with inorganic materials, the performance of polyurethane materials is easily affected by physical and chemical factors of the external environment. Using this sensitivity, under certain conditions, shape memory polyurethane is endowed with a certain shape (initial state), and when the external conditions change, it can properly change the shape and fix it (morphing). If the external environment changes again in a specific way and regularity, the shape memory p...

Claims

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Application Information

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IPC IPC(8): C08G64/34C08G18/44C08G18/48C08G18/42
Inventor 刘顺杰秦玉升王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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