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Method for preparing environmentally friendly tableware by using cassava starch sugarcane corn straw

A technology of cassava starch and sugarcane straw, applied in the direction of coating, etc., can solve the problems of harm to the human body and unsuitable tableware, and achieve the effects of less environmental pollution, less hardness and increased toughness

Inactive Publication Date: 2019-03-29
广西南宁桂尔创环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of acetic anhydride is harmful to the human body, so the acetate starch produced by the above patent is not suitable for the production of tableware

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add 100 parts of tapioca starch and 15 parts of 60% acetic acid into a ball mill for ball milling. Add 1 part of calcium oxide during the ball milling process. The temperature of the ball mill is 58°C, the speed is 350 r / min, After the ball milling was completed, the material was taken out for 200 min, washed with distilled water until the pH was 7, washed once with 70% ethanol, and dried to obtain cassava acetate starch;

[0032] (2) Dissolve cassava acetate starch in 350 parts of distilled water, add 3 parts of glycerol dropwise, and stir and react at 67°C and 420 rpm for 56 min to obtain cassava acetate starch glue;

[0033] (3) 45 parts of cassava acetate starch glue, 18 parts of calcium carbonate powder, and 200 parts of 150-mesh sugarcane straw powder were mixed evenly, dried at 70°C until the water content of the material was 10%, and then the material was taken out and placed in a mold and hot-pressed into Tableware, hot-pressing pressure 720 KN, hot-pressin...

Embodiment 2

[0037] (1) Add 100 parts of tapioca starch and 18 parts of 80% acetic acid into a ball mill for ball milling. Add 0.08 parts of calcium oxide during the ball milling process. After the ball milling was completed, the material was taken out for 700 min, washed with distilled water until the pH was 7, washed once with 70% ethanol, and dried to obtain tapioca acetate starch;

[0038] (2) Dissolve cassava acetate starch in 250 parts of distilled water, add 4 parts of glycerol acetate dropwise, and stir and react at 60°C and 350 rpm for 50 min to obtain cassava acetate starch glue;

[0039] (3) 25 parts of cassava acetate starch glue, 20 parts of calcium carbonate powder, and 200 parts of 100-mesh sugarcane straw powder were mixed evenly, dried at 65°C until the water content of the material was 11%, and then the material was taken out and placed in a mold and hot-pressed into Tableware, hot pressing pressure 650 KN, hot pressing temperature 160 ℃, hot pressing time 3 min;

[0040...

Embodiment 3

[0043] (1) Add 100 parts of tapioca starch and 20 parts of 70% acetic acid into a ball mill for ball milling. During the ball milling process, add 1.2 parts of calcium oxide. After the ball milling was completed, the material was taken out for 330 min, washed with distilled water until the pH was 7.5, washed twice with 70% ethanol, and dried to obtain cassava acetate starch;

[0044] (2) Dissolve cassava acetate starch in 300 parts of distilled water, add 2 parts of glycerin dropwise, and stir and react at 57°C and 380 rpm for 48 min to obtain cassava acetate starch glue;

[0045] (3) 34 parts of cassava acetate starch glue, 24 parts of crushed porcelain powder, and 200 parts of 150-mesh sugarcane straw powder were mixed evenly, dried at 75°C until the water content of the material was 9%, and then the material was taken out and placed in a mold and hot-pressed into Tableware, hot pressing pressure 700 KN, hot pressing temperature 140 ℃, hot pressing time 2 min;

[0046] (4) ...

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PUM

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Abstract

The invention discloses a method for preparing environmentally friendly tableware by using cassava starch sugarcane corn straw. The method includes the following steps: ball-milling the cassava starchand acetic acid, adding a catalyst, setting a certain temperature, rotating speed and time, washing the materials with distilled water and then ethanol, and drying by baking to obtain cassava acetatestarch; dissolving the cassava acetate starch in distilled water, dropping a plasticizer, and stirring the materials at a certain temperature, rotating speed and time for reaction to obtain cassava acetate starch glue; evenly mixing the cassava acetate starch glue, a filler and sugarcane straw, drying the materials at a certain temperature, taking the materials, placing the materials in a mold for hot pressing to form the tableware, and setting a certain pressure, temperature and time; and spraying a waterproof membrane on the pressed tableware. The method is simple, easy in operation, harmless to human body and degradable, has less environmental pollution, and is suitable for industrial production. The produced environmentally friendly tableware is hygienic, non-toxic, heat-resistant andwaterproof, is not prone to deformation and damage, has a wide range of raw materials, and is low in cost.

Description

technical field [0001] The invention relates to a production method of tableware, in particular to a method for preparing environment-friendly tableware by using cassava starch and sugarcane straw. Background technique [0002] At present, environmentally friendly tableware can be roughly divided into three categories: 1. Biodegradable categories: such as paper products (including pulp molding type, cardboard coating type), edible powder molding type, plant fiber molding type, etc.; 2. Photo / biological Degradable materials: photo / biodegradable plastic (non-foaming) type, such as photobiodegradable PP; 3. Materials that are easy to recycle: such as polypropylene (PP), high impact polystyrene (HIPS) , Biaxially oriented polystyrene (BOPS), natural inorganic mineral filled polypropylene composite products, etc. However, not all environmentally friendly tableware is easy to degrade. Due to environmental factors, it still causes some pollution to the environment. Easily degrada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L3/06C08K5/103C08K3/26C08J7/04C08B31/04
CPCC08B31/04C08J7/0427C08J2397/02C08J2423/06C08J2427/18C08K2003/265C08L97/02C08L2201/08C08L3/06C08K5/053C08K3/26C08K5/103C08K3/00
Inventor 戚海冰
Owner 广西南宁桂尔创环保科技有限公司
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