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Multiblock furanyl polyether ester shape memory material and preparation method thereof

A technology of furyl polyether ester and memory materials, which is applied in the field of polymer materials and can solve problems such as inapplicability

Inactive Publication Date: 2018-05-01
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is not suitable for the preparation of shape memory materials

Method used

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  • Multiblock furanyl polyether ester shape memory material and preparation method thereof
  • Multiblock furanyl polyether ester shape memory material and preparation method thereof
  • Multiblock furanyl polyether ester shape memory material and preparation method thereof

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preparation example Construction

[0029] The present invention also provides a preparation method of a multi-block furyl polyether ester shape memory material, comprising:

[0030] Step 1: Under the action of a catalyst, transesterify dimethyl 2,5-furandicarboxylate, diR1 2,5-furandicarboxylate and diR2 2,5-furandicarboxylate to obtain a prepolymer thing;

[0031] Step 2: The prepolymer obtained in Step 1 is subjected to polycondensation reaction to obtain a multi-block furyl polyether ester shape memory material.

[0032] According to the present invention, the reaction temperature in step 1 is preferably 60-200°C, more preferably 170-200°C; the reaction time is preferably 1-3 hours, more preferably 2-3 hours; the reaction pressure is preferably 0.1MPa-0.5MPa , more preferably 0.15MPa-0.2MPa.

[0033] According to the present invention, the catalyst in the first step is a tin-based or titanium-based catalyst. The tin catalyst is preferably stannous oxide, stannous octoate, stannous chloride, stannous bromi...

Embodiment 1

[0042](1) Under the effect of stannous oxalate, 2,5-dimethyl furandicarboxylate, 2,5-diethylene glycol furandicarboxylate and 2,5-diethylene glycol furandicarboxylate ( Polyethylene glycol number average molecular weight 6000) was added to the reaction flask, dimethyl 2,5-furandicarboxylate, diethylene glycol 2,5-furandicarboxylate and diethylene glycol 2,5-furandicarboxylate The mass ratio of alcohol ester is 1:20:30, and stannous oxalate accounts for 0.3% of the total diester mass percentage. Under the protection of nitrogen, the reaction is stirred at 180°C for 3 hours and the pressure is 0.15MPa to form a prepolymer.

[0043] (2) Vacuumize the above prepolymer to 80 Pa, stir and react at 235° C. for 8 hours to obtain a multi-block furyl polyether ester shape memory material. The structural formula is as follows:

[0044]

[0045] The H NMR spectrum of the multi-block furyl polyether ester shape memory material prepared in Example 1 is as follows figure 1 shown.

[00...

Embodiment 2

[0053] (1) Under the effect of stannous oxalate, 2,5-dimethyl furandicarboxylate, 2,5-dihexyl glycol furandicarboxylate and 2,5-diethylene glycol furandicarboxylate ( Polyethylene glycol number average molecular weight 20000) is added in the reaction bottle, 2,5-furandicarboxylic acid dimethyl ester, 2,5-furandicarboxylic acid dihexanediol ester and 2,5-furandicarboxylic acid diethylene glycol The mass ratio of alcohol ester is 1:30:30, and stannous oxalate accounts for 0.1% of the total diester mass percentage. Under the protection of nitrogen, stir and react at 200°C for 1 hour, and the pressure is 0.2MPa to form a prepolymer.

[0054] (2) Vacuumize the above-mentioned prepolymer to 70 Pa, stir and react at 220° C. for 5 hours, and obtain a multi-block furyl polyether ester shape memory material. The structural formula is as follows:

[0055]

[0056] The H NMR spectrum of the multi-block furyl polyether ester shape memory material prepared in Example 2 is as follows f...

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Abstract

The invention provides a multiblock furyl polyether ester shape memory material and a preparation method thereof and belongs to the technical field of macromolecular materials. The material has a structural formula represented by a formula (I) shown in the description. The invention further provides the preparation method of the multiblock furyl polyether ester shape memory material. According tothe method, a petroleum based raw material, i.e., terephthalic acid is replaced with biological monomers, i.e., 2,5-furyl dimethyl diformate, 2,5-furyl di-R1 diformate and 2,5-furyl di-R2 diformate, and the biological shape memory material with double melting points is prepared, so that on one hand, the dependency on petroleum resources is cast off, on the other hand, the obtained material has a good shape memory function, and the shape recovery rate is 80% or more.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a multi-block furyl polyether ester shape memory material and a preparation method thereof. Background technique [0002] Shape memory materials have attracted more and more attention because of their unique shape memory function. Thermoplastic shape memory materials have become a research hotspot due to their ease of processing and preparation. [0003] The journal Journal of Polymer Science Part B Polymer Physics reported a block copolymer formed of polyethylene furandicarboxylate (PET) and polyethylene glycol (PEG), which has excellent shape memory function (Journal of Polymer Science Part B B Polymer Physics, 2015, 37(2):101-112). But its raw material terephthalic acid mainly comes from petroleum resources. [0004] Patent CN105585704A uses 1,4-furandicarboxylic acid and 1,4-furandicarboxylate and polyether glycol to synthesize a polyether ester elast...

Claims

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Application Information

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IPC IPC(8): C08G63/676C08G63/85
CPCC08G63/676C08G63/85C08G2280/00
Inventor 周光远姜敏王国强张强王瑞
Owner 芜湖万隆新材料有限公司
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