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High-filling biodegradable radiation cross-link foam material and method for preparing same

A biodegradable and radiation cross-linking technology is applied in the field of highly filled biodegradable radiation cross-linked foam materials and their preparation, which can solve the problems of poor mechanical properties, poor water resistance, poor product durability, etc. Good durability and radiation dose reduction effect

Inactive Publication Date: 2018-05-15
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with general-purpose foam materials, the biodegradable foam materials currently on the market have poor mechanical properties, poor water resistance, and poor product durability.

Method used

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  • High-filling biodegradable radiation cross-link foam material and method for preparing same
  • High-filling biodegradable radiation cross-link foam material and method for preparing same
  • High-filling biodegradable radiation cross-link foam material and method for preparing same

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preparation example Construction

[0032] The preparation method of highly filled biodegradable radiation crosslinked foam material of the present invention, the steps are as follows:

[0033] Step 1. Weigh each raw material according to the composition and parts by weight, and add it to a twin-screw extruder for mixing and granulation. The mixing and granulation temperature is 80-170°C. Extrude the sheet on the machine, the thickness of the sheet is 0.5-3.0mm, preferably 1mm, and the extrusion temperature is 100-170°C;

[0034] Step 2, performing radiation crosslinking on the blend sheet in air at room temperature, with an irradiation dose of 0.5-9KGy, to obtain a precrosslinked material;

[0035] Step 3, further cross-linking the pre-crosslinked material in a hot water bath at 50-80°C for 2-48 hours to obtain a cross-linked material;

[0036] Step 4. Foam the cross-linked material in a vertical or horizontal foaming furnace at a temperature of 190-250°C for 1-20 minutes, preferably at 220-240°C for 4-10 minu...

Embodiment 1

[0039] Highly filled biodegradable radiation crosslinked foam material: 100 parts by weight of polybutylene adipate-terephthalate, 5 parts by weight of azodicarbonamide, 1 part by weight of zinc oxide and vinyltrimethylsilane 0.5 parts by weight.

[0040] The preparation of the above-mentioned high-filling biodegradable radiation-crosslinked foam material: take each raw material according to the proportion, add it to a twin-screw extruder for mixing and granulation, the mixing and granulation temperature is 80-170 ° C, and the obtained pellets are obtained by single-screw extruder The extruder is extruded into a sheet, the extrusion temperature is 100-170°C, and the thickness of the sheet is 1.0mm. Then, an electron accelerator was used to pre-irradiate the sheet in air at room temperature with a radiation dose of 9KGy, and the pre-irradiated cross-linked sheet was further cross-linked in a hot water bath at 80°C for 2 hours. Finally, foaming was carried out in a vertical foa...

Embodiment 2

[0043] Highly filled biodegradable radiation cross-linked foam material: 60 parts by weight of polybutylene adipate-terephthalate, 40 parts by weight of starch, 5 parts by weight of azodicarbonamide, 1 part by weight of zinc oxide and It consists of 0.5 parts by weight of vinyltriethoxysilane.

[0044] The preparation of the above-mentioned high-filling biodegradable radiation-crosslinked foam material: take each raw material according to the proportion, add it to a twin-screw extruder for mixing and granulation, the mixing and granulation temperature is 80-170 ° C, and the obtained pellets are obtained by single-screw extruder The extruder is extruded into a sheet, the extrusion temperature is 100-170°C, and the thickness of the sheet is 1.0mm. Then, an electron accelerator was used to pre-irradiate the sheet in air at room temperature with a radiation dose of 9KGy, and the pre-irradiated cross-linked sheet was further cross-linked in a hot water bath at 60°C for 36 hours. F...

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Abstract

The invention discloses a high-filling biodegradable radiation cross-link foam material and a method for preparing the same, and belongs to the technical field of polymers and processing of the polymers. The high-filling biodegradable radiation cross-link foam material is excellent in physical performance, good in water resistance and durability and high in foaming ratio, and the mechanical properties of the high-filling biodegradable radiation cross-link foam material can be regulated and controlled in wide ranges. The high-filling biodegradable radiation cross-link foam material comprises, by weight, 60-100 parts of poly-adipic acid-terephthalic acid butanediol ester, 0-40 parts of fillers, 0.5-15 parts of foaming agents, 0.01-5 parts of foaming auxiliaries and 0.1-10 parts of cross-linking agents. The cross-linking agents are a type of or a plurality of types of vinyltrimethylsilane, vinyltriethoxysilane and vinyl tri-(beta-methoxyethoxy) silane. The high-filling biodegradable radiation cross-link foam material and the method have the advantages that the high-filling biodegradable radiation cross-link foam material is excellent in physical performance, good in water resistance and durability and high in foaming ratio; foaming is carried out by the aid of the corresponding added fillers, and accordingly the mechanical properties of the high-filling biodegradable radiation cross-link foam material can be regulated and controlled in the wide ranges.

Description

technical field [0001] The invention belongs to the technical field of polymers and their processing, and in particular relates to a high-filling biodegradable radiation-crosslinked foam material and a preparation method thereof. Background technique [0002] Polymer foam is a special multiphase material. It is composed of solid polymer and gas phase. It is a polymer material with plastic as the basic component and contains a large number of bubbles. Therefore, it can also be regarded as a gas-filled material. composite plastic. Compared with pure plastic, it has many excellent properties, such as light weight, high specific strength, absorbable impact load, good heat insulation and sound insulation performance, etc. Therefore, it has been widely used in industry, agriculture, construction, transportation and other fields. [0003] At present, foam materials are mainly polymer foams such as polyethylene (PE) foam, polypropylene (PP) foam, polystyrene (PS) foam, polyvinyl c...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L3/02C08L1/02C08L97/00C08K5/5425C08K5/54C08K3/36C08K3/34C08K3/26C08J9/00C08J9/10
CPCC08J9/103C08J9/0023C08J9/0042C08J9/0061C08J9/0066C08J9/102C08J9/105C08J9/107C08J2203/04C08J2367/02C08J2401/02C08J2403/02C08J2497/00C08K3/34C08K3/346C08K3/36C08K5/5403C08K5/5425C08K2003/265
Inventor 于彦存韩常玉董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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