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High-tear-resistance PLA-PBAT composite degradable resin as well as preparation method and application thereof

A technology of degrading resin and high resistance is applied in the field of high tear-resistant PLA-PBAT composite degradable resin and its preparation, which can solve the problems such as the decline of mechanical properties of PLA-PBAT composite degradable resin, and achieve good mechanical properties and good resistance. The effect of tearing

Active Publication Date: 2021-06-29
漯河市瑞博塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found in their research that adding negative ion powder in the PLA-PBAT composite degradable resin will lead to a significant decline in the mechanical properties of the PLA-PBAT composite degradable resin

Method used

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  • High-tear-resistance PLA-PBAT composite degradable resin as well as preparation method and application thereof
  • High-tear-resistance PLA-PBAT composite degradable resin as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The present embodiment provides the preparation method of silica-coated negative ion powder, and its preparation method comprises the following steps:

[0027] (1) According to parts by weight, 1 part of Tween 80 is added to 10 parts of absolute ethanol and fully mixed, then 2 parts of anion powder are added thereto, and the anion powder dispersion is obtained after fully mixing.

[0028] (2) According to the volume fraction, tetraethyl orthosilicate and ethanol are mixed uniformly according to the volume ratio of 2:1 to obtain a silicon precursor solution.

[0029] (3) According to the proportioning of 8g negative ion powder per 100ml silicon precursor solution, the negative ion powder dispersion is added in the silicon precursor solution, then adding mass concentration is 20% acetic acid aqueous solution to adjust the pH of the system to be 5, at 35 ℃ Stir the reaction for 15 minutes, then raise the temperature to 75°C and continue the stirring reaction for 1.5 hours,...

Embodiment 2

[0031] The present embodiment provides the preparation method of silica-coated negative ion powder, and its preparation method comprises the following steps:

[0032] (1) According to parts by weight, after adding 1.5 parts of Tween 80 into 10 parts of absolute ethanol and fully mixing, then add 3 parts of anion powder therein, and obtain anion powder dispersion liquid after fully mixing.

[0033] (2) According to volume fraction, tetraethyl orthosilicate and ethanol are mixed uniformly according to volume ratio of 3:1 to obtain a silicon precursor solution.

[0034] (3) According to the proportioning of 15g negative ion powder per 100ml silicon precursor solution, the negative ion powder dispersion is added in the silicon precursor solution, then adding mass concentration is 15% acetic acid aqueous solution to adjust the pH of the system to be 5, at 35 ℃ Stir the reaction for 20 minutes, then raise the temperature to 75°C and continue stirring the reaction for 2 hours, and fi...

Embodiment 3

[0036] The present embodiment provides the preparation method of silica-coated negative ion powder, and its preparation method comprises the following steps:

[0037] (1) According to parts by weight, 1.5 parts of Tween 80 is added to 10 parts of absolute ethanol and fully mixed, then 2.5 parts of anion powder are added thereto, and the anion powder dispersion is obtained after fully mixing.

[0038] (2) According to the volume fraction, tetraethyl orthosilicate and ethanol are mixed uniformly according to the volume ratio of 2.5:1 to obtain a silicon precursor solution.

[0039] (3) According to the proportioning of 12g negative ion powder per 100ml silicon precursor solution, the negative ion powder dispersion is added in the silicon precursor solution, then adding mass concentration is 15% acetic acid aqueous solution to adjust the pH of the system to be 4, at 35 ℃ Stir the reaction for 15 minutes, then raise the temperature to 75°C and continue the stirring reaction for 1....

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Abstract

The invention relates to high-tear-resistance PLA-PBAT composite degradable resin as well as a preparation method and application thereof, belonging to the technical field of degradable resin. The PLA-PBAT composite degradable resin provided by the invention is prepared from the following components in parts by weight: 60 to 85 parts of polylactic acid, 10 to 40 parts of poly(butylene adipate / terephthalate), 2 to 3 parts of chlorinated methyl palmitoleate, 5 to 7 parts of tri-n-butyl citrate, 1.5 to 2.5 parts of silicon dioxide-coated negative ion powder, 0.1 to 0.5 part of polyethylene glycol stearate, 1 to 5 parts of a coupling agent and 0.3 to 0.5 part of a chain extender. The PLA-PBAT composite degradable resin with high tear resistance, which is prepared from the above raw material components by adopting the specific preparation method according to the ratio of the raw materials provided by the invention, has negative ion characteristics and good mechanical properties, and particularly has very good tear resistance.

Description

technical field [0001] The invention belongs to the technical field of degradable resins, and in particular relates to a PLA-PBAT composite degradable resin with high tear resistance and its preparation method and application. Background technique [0002] Polybutylene adipate terephthalate (PBAT) is a new type of completely biodegradable aliphatic-aromatic copolyester. Blending it with other polymers is an effective way to improve the comprehensive performance of PBAT substrates. Means, but also an important way to reduce the price of the material. In order to expand the application range of PBAT materials and expand the market demand of PBAT, it is necessary to use a variety of methods to modify them. [0003] PLA is an aliphatic polyester. Its synthetic raw material, lactic acid, can be completely fermented by biological methods, breaking away from traditional petroleum raw materials, and has good biocompatibility and high strength; at the same time, PLA is biodegradable...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08K13/06C08K9/10C08K3/38C08K3/00C08J5/18
CPCC08L67/04C08J5/18C08L2203/16C08L2201/06C08L2205/03C08L2205/02C08J2367/04C08J2467/02C08L67/02C08K13/06C08K9/10C08K3/38C08K3/00Y02W90/10
Inventor 赵毅立李艳秋赵建伟赵辰
Owner 漯河市瑞博塑胶有限公司
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