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PBAT composite material and preparation method and application thereof

A technology of composite materials and raw materials, which is applied in the field of PBAT composite materials and its preparation, can solve problems such as limitations, poor compatibility, and poor mechanical properties of composite materials

Active Publication Date: 2021-09-14
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages such as poor compatibility between hydrophobic PBAT and hydrophilic bio-based fillers, poor mechanical properties of composite materials, and slow degradation speed. Now the application range of PBAT composite films is relatively limited, mainly used in mulch and garbage bags. In terms of use, it is also crucial to expand the application of PBAT composite materials

Method used

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  • PBAT composite material and preparation method and application thereof
  • PBAT composite material and preparation method and application thereof
  • PBAT composite material and preparation method and application thereof

Examples

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preparation example Construction

[0035] The preparation method of the PBAT composite material according to the present invention comprises the following steps: (1) mix the raw materials of the new plasticizer according to the proportion at 80° C., heat at a constant temperature for 1-4 hours and filter to obtain a transparent liquid, which is the new plasticizer (2) mix the antibacterial agent with the new plasticizer described in (1) according to the ratio, and then heat it at a constant temperature of 80°C for 30 minutes to obtain a mixed solvent; (3) bake the bio-based filler at 80°C for 8-12h , after removing the water therein, (2) the mixed solvent and the bio-based filler are mixed evenly and heated at a constant temperature of 70-90°C for 4-8h before use; (4) the PBAT is baked at 60-80°C for 8- 12h, according to the weight fraction, the PBAT, the bio-based filler, and the mixed solvent are added to the equipment and mixed evenly, and the composite material masterbatch is obtained by single-screw / twin-sc...

Embodiment 1

[0040] This example provides a preparation method of a new type of PBAT composite material: (1) mix choline chloride and glycerin at a ratio of 2:1 at 80°C, heat at a constant temperature for 2 hours and filter to obtain a transparent liquid. new plasticizer; (2) mix benzalkonium chloride with the new plasticizer described in (1) according to the ratio, and then heat at 80°C for 30 minutes to obtain a mixed solvent; (3) starch at 80°C After drying for 10 hours and removing the moisture, mix (2) the mixed solvent with it evenly and heat it at a constant temperature at 80°C for 6 hours before use; (4) bake PBAT at 80°C for 10 hours, add 100 parts of PBAT and 20 parts of starch , 12 parts of new plasticizer, 0.1 part of antibacterial agent, add in equipment and mix 30min, by single-screw granulation, make composite master batch;

Embodiment 2

[0042] This example provides a preparation method of a new type of PBAT composite material: (1) mix choline chloride and thiourea at a ratio of 2:1 at 80°C, heat at a constant temperature for 2 hours and filter to obtain a transparent liquid that is It is a new type of plasticizer; (2) mix benzalkonium chloride with the new type of plasticizer according to (1) according to the ratio, and then heat it at a constant temperature of 80°C for 30 minutes to obtain a mixed solvent; (3) mix the starch at 80°C After drying for 10 hours and removing the water, mix the mixed solvent with (2) uniformly and heat at 80°C for 6 hours before use; (4) bake PBAT at 80°C for 10 hours, mix 100 parts of PBAT, part, 12 parts of new plasticizer, 0.1 part of antibacterial agent, add in equipment and mix 30min, by single-screw granulation, make composite material master batch; (5) described master batch is made novel PBAT composite material by tabletting machine .

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Abstract

The invention provides a PBAT composite material and a preparation method and application thereof. The PBAT composite material is prepared from the following raw materials in parts by weight: 100 parts of PBAT, 15 to 30 parts of bio-based filler, 9 to 18 parts of a novel plasticizer and 0.05 to 0.15 part of an antibacterial agent. The bio-based filler is at least one of starch, chitosan, bamboo powder and wood powder. The novel plasticizer component includes at least one of choline chloride and glycerol, choline chloride and thiourea, and choline chloride and glycerol and thiourea. Compared with a traditional PBAT composite material, the novel PBAT composite material has the advantages that the mechanical property is greatly improved, the tensile strength is high, the elongation at break is better, the toughness strength and transparency of the material are improved, the flame-retardant and antibacterial properties are achieved, and the degradation speed of the material is higher than that of the traditional composite material.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a PBAT composite material and its preparation method and application. Background technique [0002] Biodegradable polymers have attracted extensive attention in recent years due to the growing concern about environmental pollution caused by plastic waste and white pollution. Poly(butylene adipate-terephthalate) (PBAT) is an aliphatic-aromatic polymer based on molecular units of terephthalic acid, adipic acid and 1,4-butanediol. Biodegradable copolyester. PBAT is flexible and has a higher elongation at break than most biodegradable polyesters such as polylactic acid (PLA) and polysuccinate (PBS). The high cost of PBAT limits its application range. [0003] There are many types of bio-based fillers, but large-scale applications need to consider their cost issues, among which starch, wood powder, bamboo powder, etc. are considered the best because ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L3/02C08K5/053C08K5/19C08K5/405
CPCC08L67/02C08L2201/06C08L2201/10C08L2201/02C08L3/02C08K5/053C08K5/19C08K5/405Y02W90/10
Inventor 李洪飞朱桂阳苑会林李继伟石岩胡东良
Owner BEIJING UNIV OF CHEM TECH
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