Reinforced polypropylene-carbonate biological material and high-through-hole-rate foaming product thereof, preparing method of reinforced polypropylene-carbonate biological material and preparing method of high-through-hole-rate foaming product

A polypropylene carbonate and biological material technology is applied in the field of reinforced polypropylene carbonate-based biological materials and high-porosity foamed products, and can solve the problem of weak intermolecular force of polypropylene carbonate and material formula. It can improve the cell structure and cell surface quality, improve the comprehensive performance, and simplify the processing process.

Inactive Publication Date: 2018-01-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These patents also have limited improvement effects, complex material formulations, and the use of various additives such as organic solvents to affect the biodegradability of materials.
[0004] On the other hand, due to the weak intermolecular force of polypropylene carbonate, poor dimensional stability, and low melt strength, its foaming performance is greatly limited, resulting in a small number of cells in the foamed material, and thick and mostly closed cells. Pore ​​structure, and its foamed products also have defects such as poor dimensional stability and low strength, which seriously restricts its application, making it difficult to apply to biological tissue engineering scaffolds

Method used

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  • Reinforced polypropylene-carbonate biological material and high-through-hole-rate foaming product thereof, preparing method of reinforced polypropylene-carbonate biological material and preparing method of high-through-hole-rate foaming product
  • Reinforced polypropylene-carbonate biological material and high-through-hole-rate foaming product thereof, preparing method of reinforced polypropylene-carbonate biological material and preparing method of high-through-hole-rate foaming product
  • Reinforced polypropylene-carbonate biological material and high-through-hole-rate foaming product thereof, preparing method of reinforced polypropylene-carbonate biological material and preparing method of high-through-hole-rate foaming product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation of enhanced polypropylene carbonate-based biomaterials specifically includes the following steps:

[0051] Take 45g of polypropylene carbonate, 5g of polylactic acid and 0.15g of CHINOX1010 antioxidant and dry them in an oven at 50°C for 24 hours, then mix them in a high-speed mixer for 3 minutes, and use an internal mixer to melt and blend the mixed materials , the processing temperature was 180° C., the rotation speed was 50 rpm, and the mixing time was 8 min, to obtain the enhanced polypropylene carbonate-based biomaterial.

[0052] The preparation of the enhanced polypropylene carbonate-based biomaterial foamed product specifically includes the following steps:

[0053] (1) Using a sheet mold with a thickness of 1 mm, crush the prepared reinforced polypropylene carbonate-based biomaterial and perform hot-press molding on a flat vulcanizer. The hot-pressing temperature is 180°C, and the hot-pressing time is 5 minutes. get sheet;

[0054] (2) The obt...

Embodiment 2

[0057] The preparation of enhanced polypropylene carbonate-based biomaterials specifically includes the following steps:

[0058] Take 35g of polypropylene carbonate, 15g of polylactic acid and 0.15g of the commercial brand name as CHINOX1010 antioxidant, dry in a 50°C oven for 24h, then mix in a high-speed mixer for 3min, and use an internal mixer to melt and blend the materials. The processing temperature was 180° C., the rotation speed was 50 rpm, and the mixing time was 10 minutes to obtain the enhanced polypropylene carbonate-based biomaterial.

[0059] The preparation of high-performance reinforced polypropylene carbonate-based foamed products specifically includes the following steps:

[0060] (1) Using a sheet mold with a thickness of 1 mm, the prepared reinforced polypropylene carbonate-based biomaterial was crushed and then hot-pressed on a flat vulcanizer. The hot-pressing temperature was 190°C and the hot-pressing time was 20 minutes. get sheet;

[0061] (2) The ...

Embodiment 3

[0064] The preparation of enhanced polypropylene carbonate-based biomaterials specifically includes the following steps:

[0065] Take 25g of polypropylene carbonate, 25g of polylactic acid, and 0.15g of CHINOX1010 antioxidant, dry them in an oven at 50°C for 24 hours, then mix them in a high-speed mixer for 3 minutes, and use an internal mixer to melt and blend the mixed materials. , the processing temperature was 180° C., the rotation speed was 50 rpm, and the mixing time was 12 minutes, to obtain the enhanced polypropylene carbonate-based biomaterial.

[0066] The preparation of the high-through-porosity foamed product of the reinforced polypropylene carbonate-based biomaterial specifically includes the following steps:

[0067] (1) Using a sheet mold with a thickness of 1 mm, crush the prepared reinforced polypropylene carbonate-based biomaterial and perform hot pressing on a flat vulcanizer. The hot pressing temperature is 200 ° C, and the hot pressing time is 10 min. ge...

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Abstract

The invention discloses a reinforced polypropylene-carbonate biological material and a high-through-hole-rate foaming product thereof, a preparing method of the reinforced polypropylene-carbonate biological material and a preparing method of the high-through-hole-rate foaming product. Polylactic acid is used as blending modification filler, melt blending is carried out, and the reinforced polypropylene-carbonate biological material with the excellent comprehensive performance is prepared; the reinforced polypropylene-carbonate biological material is foamed with a foaming agent, and the high-through-hole-rate foaming product of the reinforced polypropylene-carbonate biological material is obtained; the prepared foaming product has the advantages of being high in compression strength and through hole rate. The processing process is simple, economic feasibility is achieved, the cost is low, application of polypropylene carbonate in a structural material and a foaming material is greatly widened, and the application value of the polypropylene carbonate is well improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of biological materials and foam molding materials thereof, and in particular relates to a reinforced polypropylene carbonate-based biological material and its high-through-porosity foamed products and their preparation methods. Background technique [0002] Polypropylene carbonate (PPC) is an alternating copolymer synthesized from carbon dioxide and propylene oxide. It is an aliphatic polycarbonate, because of its excellent biodegradability, biocompatibility, good transparency, gas Barrier properties and super toughness are widely used in biomedical fields such as food and drug fresh-keeping packaging films, drug slow-release carriers, and tissue engineering scaffolds. However, due to its typical linear molecular chain structure and weak intermolecular force, it is in an amorphous state at room temperature, and its processing performance is insufficient; Insufficient; low glass transition te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08J9/12B29B7/28B29C44/08B29C44/60B29C47/92B29C48/92
Inventor 李哲星陈斌艺彭响方况太荣
Owner SOUTH CHINA UNIV OF TECH
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