Ternary copolymer polycarbonate foam material

A ternary copolymerized polycarbonate and polycarbonate technology, applied in the field of biodegradable foam materials, can solve the problems of limited industrial application, high foaming temperature, complicated operation, etc., and achieve excellent foaming and degradation properties, excellent foaming Good effect of foam performance, foaming performance and cell stability

Inactive Publication Date: 2012-06-20
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN101880405A reports a preparation method of a biodegradable spherical porous starch foam material, and obtains foam particles with a pore size of 1-1000 nm and a diameter of less than 200 μm, which are used as drug carriers. However, its application is limited due to its own structural characteristics scope
Patent CN101717475A reports a preparati

Method used

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  • Ternary copolymer polycarbonate foam material
  • Ternary copolymer polycarbonate foam material
  • Ternary copolymer polycarbonate foam material

Examples

Experimental program
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Effect test

Embodiment 1 3

[0037] Example 1 Direct synthesis of ternary copolymer PPCHC foam material:

[0038] Add 5mg of zinc-cobalt double metal cyanide complex catalyst (structural formula Zn 3 [Co(CN) 6 ] 2 ·1.3ZnCl 2 ·2.0t-BuOH·0.5H 2 O) Put it in a 250ml autoclave, use a vacuum pump at 90°C for about 2 hours to remove trace moisture and oxygen in the kettle, cool to about 25°C, add 24g propylene oxide and 0.9g cyclohexane oxide, and fill CO 2 And turn on the stirring, place the kettle body in a water bath preheated to 70°C, and start the reaction. When the system temperature reaches and stabilizes at 60°C, the pressure is controlled at 5.5MPa. After 6 hours of reaction, the temperature is quickly cooled to room temperature and the pressure is released. Under normal pressure, 48.1g of foam material is obtained, and its polymerization activity is calculated to be 9.6Kg / g cat, its number average molecular weight is 150,000 and its molecular weight distribution is 3.2 by GPC test; figure 1 It is a terpol...

Embodiment 2 3

[0039] Example 2 Direct synthesis of ternary copolymer PPCHC foam material:

[0040] The other steps are the same as in Example 1. The difference is that the amount of the catalyst is 10mg to obtain 49.4g of foam material. The calculated polymerization activity is 4.9Kg / g cat, the number average molecular weight is 120,000, the molecular weight distribution is 3.5, and the content of carbon dioxide units in the polymer It is 45.3%, the glass transition temperature is 30.1°C, the average cell size is 0.85mm, and the impact rebound rate is 36.2%.

Embodiment 3 3

[0041] Example 3 Direct synthesis of ternary copolymer PPCHC foam material:

[0042] The other steps are the same as in Example 1. The difference is that the amount of the catalyst is 15mg to obtain 42.2g of foam material. The calculated polymerization activity is 8.4Kg / g cat, the number average molecular weight is 130,000, the molecular weight distribution is 3.1, and the content of carbon dioxide units in the polymer It is 45.3%, the glass transition temperature is 37.9°C, the average cell size is 0.81mm, and the impact rebound rate is 36.9%.

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Abstract

The invention discloses a ternary copolymer polycarbonate foam material. The material is synthesized by copolymerization of propylene oxide (PO), a third monomer and CO2 in the presence of a double metal and cyanogen complex catalyst. The number-average molecular weight of the material is 10,000 to 150,000 and the molecular weight distribution is 2.0 to 4.0. The carbon dioxide unit content in the polymer is 30 to 48 percent. According to the result of a differential scanning calorimeter (DSC) test, the glass-transition temperature of the material is 20 to 80 DEG C; and the result of electron microscopy indicates that the average cellular size of the material is less than 1 millimeters and that the impact resilience of the material is 9 to 40 percent. The simple and easy synthesis method of the polycarbonate foam material controls the indexes of the foam material by regulating pressure, foaming time and the feeding ratio of the monomer and the PO; and the prepared foam material has high performance, the polymer chain of the material has a degradable polyester structure, and the application prospect of the polymer is promising.

Description

Technical field: [0001] The invention relates to the synthesis of polymer materials, in particular to the preparation of a novel carbon dioxide foaming biodegradable foam material by using a double metal cyanide complex catalyst to catalyze the copolymerization of carbon dioxide and epoxide. Background technique [0002] Polymer foam material is a kind of porous material with polymer as the matrix and countless bubbles inside. Because of its high impact strength, low density and good heat insulation and sound insulation performance, it is widely used in household daily necessities and vehicles. , Packaging materials, building materials, military industry, aerospace and other fields. With the continuous improvement of human living standards, the demand for polymer foam materials is also increasing. However, the environmental pollution caused by this has also attracted increasing attention. Therefore, choosing a more environmentally friendly foaming method and preparing biodegrada...

Claims

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Application Information

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IPC IPC(8): C08G64/38C08G64/34C08J9/12
Inventor 刘宾元张伟高茜
Owner HEBEI UNIV OF TECH
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