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Ethylene acrylic acid ionomer shape memory material and preparation method thereof

A technology of ethylene acrylic acid and memory material, applied in the field of ethylene acrylic acid ionomer shape memory material and its preparation, can solve the problems of discontinuous production process, long time-consuming, complicated preparation process, etc., and achieves low equipment requirements and low input cost , the preparation method is simple

Inactive Publication Date: 2018-06-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The triple shape memory performance of the obtained material is good, but it involves a composite process, the preparation process is slightly complicated, the time is too long, and the production process is discontinuous

Method used

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  • Ethylene acrylic acid ionomer shape memory material and preparation method thereof
  • Ethylene acrylic acid ionomer shape memory material and preparation method thereof
  • Ethylene acrylic acid ionomer shape memory material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) First weigh 1000g of ethylene acrylic acid copolymer (EAA 3460), 6g of zinc oxide for premixing; then, weigh 15g of white oil, 8g of antioxidant (B225), 10g of glacial acetic acid for premixing; mix the two mixtures The material is uniformly mixed by machinery;

[0029] (2) Add the mixed material obtained in step (1) to a twin-screw extruder for melt neutralization, reaction extrusion and granulation to obtain ethylene acrylic acid ionomer. The temperature of the extruder is set at 170-250°C, the vacuum degree is controlled at 0.2Mpa, the feeding speed is 200rmp, and the screw speed is 400rmp.

[0030] (3) Mold the ethylene acrylic acid ionomer obtained in step (2) at 200° C. and 7 MPa for 5 minutes, and cool to obtain an ethylene acrylic acid ionomer shape memory material.

[0031] figure 1 The DMA figure of the shape memory material prepared for this embodiment, glass transition temperature (T g ) is 59.77℃, figure 2 The DSC figure of the shape memory materia...

Embodiment 2

[0033] (1) First weigh 1000g ethylene acrylic acid copolymer (EAA 3460), 25g zinc oxide for premixing; then, weigh 15g white oil, 8g antioxidant (B225), 10g glacial acetic acid for premixing; mix the two mixtures The material is uniformly mixed by machinery;

[0034] (2) Add the mixed material obtained in step (1) to a twin-screw extruder for melt neutralization, reaction extrusion and granulation to obtain ethylene acrylic acid ionomer. The temperature of the extruder is set at 170-250°C, the vacuum degree is controlled at 0.2Mpa, the feeding speed is 200rmp, and the screw speed is 400rmp;

[0035] (3) Mold the ethylene acrylic acid ionomer obtained in step (2) at 200° C. and 7 MPa for 5 minutes, and cool to obtain an ethylene acrylic acid ionomer shape memory material.

[0036] The DMA diagram, DSC diagram, triple shape memory diagram and quadruple shape memory diagram of the sample prepared in this embodiment are similar to those in Example 1.

Embodiment 3

[0038] (1) First, weigh 1000g of ethylene acrylic acid copolymer (EAA 3460), 36g of sodium acetate, and 3g of sodium hydroxide for premixing; then, weigh 15g of white oil, 8g of antioxidant (B225), and 10g of glacial acetic acid for premixing ;Mix the two mixed materials uniformly by mechanical;;

[0039] (2) Add the mixed material obtained in the step (1) into an extruder for melting and neutralization, and react extrusion and granulate to obtain ethylene acrylic acid ionomer. The temperature of the extruder is set at 170-250°C, the vacuum degree is controlled at 0.2Mpa, the feeding speed is 200rmp, and the screw speed is 400rmp;

[0040] (3) Mold the ethylene acrylic acid ionomer obtained in step (2) at 200° C. and 7 MPa for 5 minutes, and cool to obtain an ethylene acrylic acid ionomer shape memory material.

[0041] The DMA diagram, DSC diagram, triple shape memory diagram and quadruple shape memory diagram of the sample prepared in this embodiment are similar to those in...

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Abstract

The invention relates to the technical field of intelligent high polymer materials, in particular to an ethylene acrylic acid ionomer shape memory material and a preparation method thereof. The material comprises the following components in parts by weight: 100 parts of ethylene acrylic acid copolymer, 0.2 to 8 parts of metal oxide / metal hydroxide, and 0.5 to 6 parts of an auxiliary agent. The material has the advantages of excellent mechanical property and good transparency, can realize excellent controlled shape memory and multi-shape memory effect, is simple in technical flow, can realize continuous production, and is low in equipment requirement and low in investment cost.

Description

technical field [0001] The invention belongs to the technical field of intelligent polymer materials, and relates to an ethylene acrylic acid ionomer shape memory material and a preparation method thereof. Background technique [0002] Shape memory polymers (SMPs) are intelligent materials that can respond to external stimuli. Automatically returns to the original shape. In recent years, shape memory polymers have received more and more attention, because compared with shape memory alloys and shape memory ceramics, shape memory polymers have good processability, high design feasibility, light weight, versatile functions and low cost. Etc. [0003] But at present, most shape-memory polymer materials are ordinary shape-memory polymer materials, which only have a single transition temperature (T s ), can only fix a temporary shape and restore a permanent shape, which cannot meet the development requirements of smart materials. In addition, shape memory polymer materials on ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L91/06C08K3/22
CPCC08K2003/2296C08L23/0876C08L2201/10C08L2201/12C08L91/06C08K3/22
Inventor 陈弦李彩利李浩冯志豪张玡珂杜程李昂
Owner SICHUAN UNIV
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