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Biodegradable flame resistance material and preparation method thereof

A kind of flame retardant material, biological technology, applied in the direction of coating, etc., can solve the problems of biodegradable plastic flammability, safety and effective application, and achieve the effect of avoiding natural oxidation, improving flame retardant performance, and broad application prospects

Inactive Publication Date: 2011-11-16
余姚市环华电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although biodegradable plastics are environmentally friendly, like traditional plastics, the flammability of biodegradable plastics will largely limit their safe and effective applications

Method used

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  • Biodegradable flame resistance material and preparation method thereof
  • Biodegradable flame resistance material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, in three-necked round bottom flasks, chitosan is dissolved in 2% acetic acid (w / v) and configures 2% chitosan solution, adds the starch of chitosan quality 1.5, stirs; Add starch / Red phosphorus with 6% of the total amount of chitosan, and 35% glycerin of the total amount of starch / chitosan and deionized water with 25 times the total amount of chitosan starch were added at the same time, stirred and mixed evenly, and dispersed with 600W power ultrasonic wave for 20min, Heat to 90°C with a constant temperature heating device, and stir with a mechanical stirrer (1200r / min) for 50 minutes. Pour it into a pre-prepared mold, put it into a constant temperature drying oven, dry it at 50°C for 24 hours, and then form a film, peel off the film, and store it in a humidity box with a relative humidity of 50% for 24 hours at room temperature. Use a hot press and a cold press to vulcanize at about 120°C, make tablets, and then use conventional injection molding technol...

Embodiment 2

[0026] Embodiment 2, in three-necked round bottom flasks, chitosan is dissolved in 1.5% acetic acid (w / v) and is configured into 2% chitosan solution, adds the starch that chitosan quality 2.0 times, stirs; Add Red phosphorus with 7% of the total amount of starch / chitosan, while adding 40% of the total amount of starch / chitosan plasticizer glycerin and deionized water 30 times the total amount of chitosan / starch, stir and mix evenly, use 600W The power is ultrasonically dispersed for 20 minutes, heated to 90°C with a constant temperature heating device, and stirred with a mechanical stirrer (1200r / min) for 50 minutes. Pour it into a pre-prepared mold, put it into a constant temperature drying oven, dry it at 50°C for 24 hours, and then form a film, peel off the film, and store it in a humidity box with a relative humidity (RH) of 50% for 24 hours at room temperature. Use a hot press and a cold press to vulcanize at about 120°C, make tablets, and then use conventional injection...

Embodiment 3

[0028] Embodiment 3, in three-necked round bottom flask, chitosan is dissolved in 1.5% acetic acid (w / v) and is configured into 2% chitosan solution, adds the starch that chitosan quality 4.0 times, stirs; Add Red phosphorus with 8% of the total amount of starch / chitosan, add glycerin with 50% of the total amount of chitosan starch and deionized water with 40 times the total amount of chitosan starch at the same time, stir and mix evenly; use 600W power ultrasonic dispersion for 20min, Heat to 90°C with a constant temperature heating device, and stir with a mechanical stirrer (1200r / min) for 50 minutes. Pour it into a pre-prepared mold, put it into a constant temperature drying oven, and dry it at 50°C for 24 hours to form a film, peel off the film, and store it at room temperature in a humidity box with a relative humidity (RH) of 50%. Use a hot press and a cold press to vulcanize at about 120°C, make tablets, and then use conventional injection molding technology to inject m...

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Abstract

The invention provides a biodegradable flame resistance material. The flame resistance material is characterized in that starch and chitosan are used as main components, red phosphorus is used as flame resistance additive, starch / chitosan can provides a great deal of carbon, chitosan contains nitrogen element, when acid source is added in red phosphorus, the flame resistance of the biodegradable material is effectively improved and the usable range of the biodegradable composite material is expanded so that the biodegradable composite material has wider application area; the preparation method adopts solution method, ultrasonic dispersion and mechanical high-speed agitation so that red phosphorus used as fire retardant can be dispersed in solution on nano-scale and the autoxidation of thecomposite material can be effectively avoided, thus the composite material can have better mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a biodegradable flame retardant material, in particular to a biodegradable flame retardant material prepared by using red phosphorus as a flame retardant. Background technique [0002] Plastic has become an indispensable material in industrial production and people's life. At the same time, with the extensive application of petrochemical plastics, waste plastic products are also increasing day by day. Since most of today's general-purpose plastics are stable in performance, they are not easy to be rapidly degraded by various environmental factors in nature, so the so-called "white pollution" appears. At present, there are many ways to deal with "white garbage", such as incineration, landfill, etc., but when waste plastics are incinerated, they will cause serious secondary pollution to the environment. Therefore, green, environmentally friendly and degradable materials a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L3/02C08L5/08C08K3/02B29C45/00B29C39/44
Inventor 张哲宋小丽陈琴何海龙雷自强
Owner 余姚市环华电器有限公司
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