Method for preparing environmentally friendly tableware by using corn starch and wheat straw
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A corn starch and wheat straw technology, applied in coating and other directions, can solve problems such as harm to human body, unsuitable tableware, etc., and achieve the effects of less environmental pollution, less hardness, and stable storage.
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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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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0031] (1) Add 100 parts of cornstarch and 28 parts of 70% acetic acid into a ball mill for ball milling. During the ball milling process, add 1.5 parts of calcium hydroxide. The temperature of the ball mill is 60°C and the speed is 380 r / min. The time is 80 min. After the ball milling is completed, the material is taken out, washed with distilled water until the pH is 6.5, washed twice with 70% ethanol, and dried to obtain corn acetate starch;
[0032] (2) Dissolve corn acetate starch in 480 parts of distilled water, add 2 parts of nitroglyceride dropwise, and stir and react at 70°C and 600 rpm for 50 min to obtain corn acetate starch glue;
[0033] (3) 45 parts of corn acetate starch glue, 22 parts of crushed porcelain powder, and 200 parts of 100-mesh wheat straw powder are mixed evenly, dried at 75°C until the water content of the material is 12%, and then the material is taken out and placed in a mold and hot-pressed into Tableware, hot-pressing pressure 750 KN, hot-press...
Embodiment 2
[0037] (1) Add 100 parts of cornstarch and 17 parts of 90% acetic acid into a ball mill for ball milling. During the ball milling process, add 2.4 parts of calcium oxide. The temperature of the ball mill is 55°C, the speed is 460 r / min, After the ball milling was completed, the material was taken out for 300 min, washed with distilled water until the pH was 7, washed once with 70% ethanol, and dried to obtain corn acetate starch;
[0038] (2) Dissolve corn acetate starch in 350 parts of distilled water, add 5 parts of glycerin dropwise, and stir and react at 65°C and 550 rpm for 55 minutes to obtain corn acetate starch glue;
[0039] (3) 35 parts of corn acetate starch glue, 26 parts of crushed porcelain powder, and 200 parts of 200-mesh wheat straw powder are mixed evenly, dried at 50°C until the water content of the material is 10%, and then the material is taken out and placed in a mold and hot-pressed into Tableware, hot pressing pressure 650 KN, hot pressing temperature 1...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses a method for preparing environmentally friendly tableware by using corn starch and wheat straw. The method includes the following steps: ball-milling the corn starch and aceticacid, 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 corn acetate starch; dissolving the corn acetate starch in distilled water, dropping a plasticizer, and stirring the materials at a certain temperature, rotating speed and time for reaction to obtain corn acetate starch glue;evenly mixing the corn acetate starch glue, a filler and corn 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 and waterproof, is not prone todeformation 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 cornstarch and wheat 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 degradable pape...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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