Modified full-bio-based PBAT biodegradable plastic and preparation method thereof

A technology for biodegradable plastics and degradable plastics, applied in the field of modified full bio-based PBAT biodegradable plastics and their preparation, can solve the problems of poor flame retardant performance, poor heat resistance, and high cost, and achieve improved mechanical properties, Improved compatibility and improved longevity

Inactive Publication Date: 2021-10-26
江苏玉宇环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PBAT is a copolymer of butylene adipate and butylene terephthalate. It has the characteristics of both PBA and PBT. It has good ductility and elongation at break, as well as good heat resistance. and impact performance; in addition, it also has excellent biodegradability, but its cost is relatively high, its heat resistance is not good, its flame retardant performance is not good, it is flammable, and it is accompanied by the formation of a large number of droplets in the combustion

Method used

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  • Modified full-bio-based PBAT biodegradable plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of bio-based flame retardant:

[0041] Add phytic acid and itaconic acid to acetone, stir and mix, add ammonium persulfate, react at 60°C for 4 hours, wash and dry to obtain product A; the mass of each component in product A is: 3.0 parts of phytic acid, 1.0 part of itaconic acid Acid, 0.006 parts of ammonium persulfate;

[0042] Take product A, add epichlorohydrin and tetramethylammonium chloride, react at 80°C for 1h, cool down to 30°C, add sodium hydroxide solution, react for 1h, wash and dry to obtain product B; product B is composed of the following weight Separately obtained: 10 parts of product A, 5 parts of product B, 90 parts of epichlorohydrin, 3.0 parts of tetramethylammonium chloride, 8 parts of sodium hydroxide;

[0043]Take feather powder, add urea solution, soak at 50°C for 24 hours, add sodium sulfide solution and sodium lauryl sulfate, stir for 30 minutes, filter, dialyze to obtain protein solution; add glycerin and product B, stir at 7...

Embodiment 2

[0052] (1) Preparation of bio-based flame retardant:

[0053] Take phytic acid and itaconic acid, add acetone, stir and mix, add ammonium persulfate, react at 80°C for 7 hours, wash and dry to obtain product A; the quality of each component in product A is: 3.1 parts of phytic acid, 1.1 parts of itaconic acid Acid, 0.008 parts of ammonium persulfate;

[0054] Take product A, add epichlorohydrin and tetramethylammonium chloride, react at 105°C for 3h, cool down to 45°C, add sodium hydroxide solution, react for 4h, wash and dry to obtain product B; product B is composed of the following weight Separately obtained: 10 parts of product A, 5.5 parts of product B, 95 parts of epichlorohydrin, 3.1 parts of tetramethylammonium chloride, 9 parts of sodium hydroxide;

[0055] Take feather powder, add urea solution, soak at 62°C for 25 hours, add sodium sulfide solution and sodium lauryl sulfate, stir for 45 minutes, filter, dialyze to obtain protein solution; add glycerin and product B...

Embodiment 3

[0064] (1) Preparation of bio-based flame retardant:

[0065] Take phytic acid and itaconic acid, add acetone, stir and mix, add ammonium persulfate, react at 100°C for 10 hours, wash and dry to obtain product A; the quality of each component in product A is: 3.3 parts of phytic acid, 1.3 parts of itaconic acid Acid, 0.010 parts of ammonium persulfate;

[0066] Take product A, add epichlorohydrin and tetramethylammonium chloride, react at 130°C for 5h, cool down to 60°C, add sodium hydroxide solution, react for 7h, wash and dry to obtain product B; product B is composed of the following weight Separately obtained: 10 parts of product A, 6 parts of product B, 100 parts of epichlorohydrin, 3.3 parts of tetramethylammonium chloride, 10 parts of sodium hydroxide;

[0067] Take feather powder, add urea solution, soak at 75°C for 27 hours, add sodium sulfide solution and sodium lauryl sulfate, stir for 60 minutes, filter, dialyze to obtain protein solution; add glycerin and product...

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Abstract

The invention discloses a modified full-bio-based PBAT biodegradable plastic and a preparation method thereo. The preparation method comprises the following preparation processes of (1) taking phytic acid, itaconic acid, epichlorohydrin, sodium hydroxide and feather meal to prepare a bio-based flame retardant, (2) taking cellulose acetate, lactic acid, wheat gluten protein and epoxidized soybean oil to obtain the bio-based polymer, and (3) melting and blending poly(butylene adipate-co-terephthalate), polylactic acid, the bio-based polymer and the bio-based flame retardant to obtain the bio-based degradable plastic. By adding the PLA, the bio-based flame retardant and the bio-based polymer into a PBAT system, fuzziness of a phase interface between the PLA and PBAT components can be promoted, the interface bonding effect between the two phases is enhanced, the compatibility is effectively improved, a blend is dispersed more uniformly, the comprehensive mechanical property of the system can be improved, and further improvement of the flame retardant property of the system is promoted.

Description

technical field [0001] The invention relates to the technical field of degradable plastics, in particular to a modified all-bio-based PBAT biodegradable plastic and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the development of materials, the production of polymers has brought great convenience to people's lives, but the problems of environmental pollution and petrochemical energy depletion caused by this also need to be solved urgently. At present, PBAT (polybutylene adipate / terephthalate), as a biodegradable polymer and one of the best degradable materials in the market, is a hot spot in the research of biodegradable plastics. PBAT is a copolymer of butylene adipate and butylene terephthalate. It has the characteristics of both PBA and PBT. It has good ductility and elongation at break, as well as good heat resistance. and impact performance; in addition, it also has excellent biodegradability, but its cos...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L89/04C08L87/00C08H1/06C08G81/00
CPCC08L67/02C08H1/06C08G81/00C08L2201/02C08L2201/06C08L2201/08C08L67/04C08L89/04C08L87/005
Inventor 向一民钱长龙张杰海葛栋梁杨旭
Owner 江苏玉宇环保新材料有限公司
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