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Polylactic acid plastic containing composite flame retardant and preparation method of polylactic acid plastic

A technology of polylactic acid and flame retardant, applied in the field of degradable plastics

Inactive Publication Date: 2021-07-30
孚莱孚(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of existing flame retardants to polylactic acid can not only improve its flame retardant performance, but also have a certain impact on the physical and mechanical properties of polylactic acid bulk materials.

Method used

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  • Polylactic acid plastic containing composite flame retardant and preparation method of polylactic acid plastic
  • Polylactic acid plastic containing composite flame retardant and preparation method of polylactic acid plastic
  • Polylactic acid plastic containing composite flame retardant and preparation method of polylactic acid plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a polylactic acid plastic containing a composite flame retardant, which is made of the following raw materials in parts by weight: 110 parts of polylactic acid, 15 parts of plant fiber, 2 parts of pentaerythritol, 1.5 parts of starch, and 12 parts of ammonium polyphosphate. part, 4 parts of melamine, 2 parts of modified white carbon black, 5 parts of ethylene oxide, 0.5 part of sorbitol, 1.5 parts of talcum powder, 1.5 parts of stearic acid amide, 10100.25 parts of antioxidant.

[0027] Wherein, the plant fiber is made through the following surface treatment:

[0028] (1) Take 3.5 g of sodium alginate, add it to 100 ml of water, stir to dissolve, and then adjust the pH value to 7 with acetic acid to obtain a sodium alginate solution.

[0029] (2) Take plant fibers and pulverize them, and then carry out air-explosion loosening treatment; add the plant fibers after air-explosion loosening treatment into sodium alginate solution and soak for 4 hour...

Embodiment 2

[0037] This embodiment provides a polylactic acid plastic containing a composite flame retardant, which is made of the following raw materials in parts by weight: 100 parts of polylactic acid, 20 parts of plant fiber, 1 part of pentaerythritol, 2 parts of starch, and 10 parts of ammonium polyphosphate 5 parts of melamine, 1 part of modified white carbon black, 6 parts of ethylene oxide, 0.2 part of sorbitol, 2 parts of talcum powder, 1 part of stearic acid amide, 0.4 part of antioxidant 1010.

[0038] Wherein, the plant fiber is made through the following surface treatment:

[0039] (1) Take 2 g of sodium alginate, add it to 100 ml of water, stir to dissolve, and then adjust the pH value to 9 with acetic acid to obtain a sodium alginate solution.

[0040] (2) Take the plant fiber and pulverize it, and then carry out air-explosion loosening treatment; add the plant fiber after the air-explosion loosening treatment into sodium alginate solution and soak for 5 hours, filter and d...

Embodiment 3

[0048]This embodiment provides a polylactic acid plastic containing a composite flame retardant, which is made of the following raw materials in parts by weight: 120 parts of polylactic acid, 10 parts of plant fiber, 3 parts of pentaerythritol, 1 part of starch, and 15 parts of ammonium polyphosphate 3 parts, 3 parts of melamine, 3 parts of modified white carbon black, 4 parts of ethylene oxide, 0.8 part of sorbitol, 1 part of talcum powder, 2 parts of stearic acid amide, 0.1 part of antioxidant 168.

[0049] Wherein, the plant fiber is made through the following surface treatment:

[0050] (1) Take 5 g of sodium alginate, add it to 100 ml of water, stir to dissolve, and then adjust the pH value to 5 with acetic acid to obtain a sodium alginate solution.

[0051] (2) Take plant fibers and pulverize them, and then carry out air-explosion loosening treatment; add the plant fibers after air-explosion loosening treatment into sodium alginate solution and soak for 3 hours, filter a...

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Abstract

The invention provides polylactic acid plastic containing a composite flame retardant. The polylactic acid plastic is prepared from the following raw materials in parts by weight: 100 to 120 parts of polylactic acid, 10 to 20 parts of plant fiber, 1 to 3 parts of pentaerythritol, 1 to 2 parts of starch, 10 to 15 parts of ammonium polyphosphate, 3 to 5 parts of melamine, 1 to 3 parts of modified white carbon black, 4 to 6 parts of ethylene oxide, 0.2 to 0.8 part of sorbitol, 1 to 2 parts of talcum powder, 1 to 2 parts of octadecanamide, and 0.1 to 0.4 part of an antioxidant. The polylactic acid plastic has the advantages of being environmentally friendly and high in flame retardant level; and meanwhile the influence of addition of the flame retardant on the physical and mechanical properties of the polylactic acid body material is reduced to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of degradable plastics, in particular to a polylactic acid plastic containing a composite flame retardant. Background technique [0002] Polylactic acid is synthesized from lactic acid fermented from renewable crops such as corn and potatoes as the initial raw material. It can be completely biodegraded, and the degradation products are carbon dioxide and water. Polylactic acid has excellent biocompatibility, and its degradation in the human body and the high safety of its degradation products have been confirmed. Polylactic acid is a thermoplastic polymer. Compared with other biodegradable polymers, the polymer has good mechanical properties, thermal stability and processability. Therefore, polylactic acid is currently recognized as a replacement for traditional petroleum-based polymers to a considerable extent. biodegradable polymers. [0003] With the depletion of petroleum, coal and other resources and...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L97/02C08L5/04C08K13/06C08K9/06C08K9/02C08K7/26C08K5/053C08K3/32C08K5/3492C08K5/1515
CPCC08L67/04C08L2201/02C08L2205/16C08L2201/06C08L2205/035C08K2003/323C08L97/02C08L5/04C08L3/02C08K13/06C08K9/06C08K9/02C08K7/26C08K5/053C08K3/32C08K5/34922C08K5/1515
Inventor 李洋洋樊雪子刘振涛刘军飞王帅王永飞
Owner 孚莱孚(上海)新材料有限公司
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