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Environment-friendly paint prepared from modified starch and preparation method of environment-friendly paint

An environmentally friendly coating and modification technology, applied in the field of fresheners, can solve the problems of easy cracking, mildew, mildew, and low cost, and achieve the effects of increased adhesion, easy coating, and increased adhesion.

Inactive Publication Date: 2017-09-22
广西顺帆投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of starch to prepare environmentally friendly coatings has become a trend. Starch is a renewable resource, easy to obtain, and low in cost. The patent document with application number 201510288140.8 discloses a glutinous rice environmentally friendly coating and its preparation method. It consists of the following raw materials in terms of mass percentage : Glutinous rice flour 37%~39%, crop starch 15%~20%, ash calcium 9.5%~11%, heavy calcium 14%~15%, diatom mud 18%~19%, negative ion powder 1.5%~2%, The starch and glutinous rice flour of this invention have not been specially treated, so they are prone to cracking and mold after a long period of time after application, especially in winter and summer.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An environmentally friendly coating prepared from modified starch is mainly composed of the following materials in weight fractions: 40 parts of modified starch, 30 parts of acrylic resin, 5 parts of seaweed powder, 50 parts of modified diatomite, 3 parts of nano-zinc oxide, and magnetite powder 3 parts, 5 parts of nano-titanium dioxide; the modified starch is made by the following method: tapioca starch is mechanically pulverized to below 10 microns, after adding glycerol, deionized water and surfactant and mixing evenly, using citric acid to adjust PH to 2.5, placed in the reactor, the stirring speed is set to 2600rmp, the pressure in the reactor is -0.8Mpa, the temperature is 50°C, after 1 hour of reaction, the pH is adjusted to 7, and the high pressure 220Mpa spray drying is carried out. The drying temperature 80° C., cooled and then mechanically crushed through a 2000-mesh sieve to obtain the modified starch. The weight ratio of tapioca starch, glycerol, deionized w...

Embodiment 2

[0019] An environmentally friendly coating prepared from modified starch is mainly composed of the following materials in weight fractions: 50 parts of modified starch, 40 parts of acrylic resin, 10 parts of seaweed powder, 100 parts of modified diatomite, 8 parts of nano-zinc oxide, and magnetite powder 5 parts, 15 parts of nano-titanium dioxide; the modified starch is made by the following method: the tapioca starch is mechanically pulverized to below 10 microns, after adding glycerol, deionized water, and a surfactant to mix evenly, adjust the starch by citric acid PH to 4, placed in the reactor, the stirring speed is set to 3000rmp, the pressure in the reactor is -0.8Mpa, the temperature is 60°C, after 5 hours of reaction, the pH is adjusted to 8, high pressure 250Mpa spray drying, the drying temperature 100 DEG C, after cooling, mechanically pulverize and cross a 2000-mesh sieve to obtain the modified starch; the weight ratio of the tapioca starch, glycerol, deionized wate...

Embodiment 3

[0022] An environmentally friendly coating prepared from modified starch is mainly composed of the following materials in weight fractions: 45 parts of modified starch, 35 parts of acrylic resin, 8 parts of seaweed powder, 65 parts of modified diatomite, 5 parts of nano-zinc oxide, and magnetite powder 4 parts, 12 parts of nano-titanium dioxide; the modified starch is made by the following method: tapioca starch is mechanically pulverized to below 10 microns, after adding glycerol, deionized water and surfactant and mixing evenly, using citric acid to adjust PH to 3, placed in the reactor, the stirring speed is set to 2800rmp, the pressure in the reactor is -0.8Mpa, the temperature is 55°C, after 4 hours of reaction, the pH is adjusted to 7, spray drying at a high pressure above 200Mpa, and the dry The temperature is 90°C, and after cooling, mechanically pulverize and pass through a 2000-mesh sieve to obtain the modified starch; the weight ratio of the tapioca starch, glycerol,...

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Abstract

The invention discloses environment-friendly paint prepared from modified starch. The environment-friendly paint is prepared from the following materials in parts by weight: 40-50 parts of modified starch, 30-40 parts of acrylic resin, 5-10 parts of seaweed powder, 50-100 parts of modified kieselguhr, 3-8 parts of nano zinc oxide, 3-5 parts of magnet powder and 5-15 parts of nano titanium dioxide. By adding the modified starch and the modified kieselguhr, the tackiness of the environment-friendly paint is obviously increased, and the environment-friendly paint forms uniform suspending liquid in a water solvent; and the environment-friendly paint is easy to smear, and an uneven surface is easy to fill up and make even so as to make the surface be smooth. The environment-friendly paint does not contain an organic solvent, and the modified starch and the modified kieselguhr have an obvious effect in dust adsorption and formaldehyde gas adsorption.

Description

technical field [0001] The invention relates to the technical field of fresheners. More specifically, the present invention relates to an environmentally friendly coating prepared from modified starch and a preparation method thereof. Background technique [0002] Paint, traditionally called paint in China. The so-called paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, oil, or emulsion, with or without adding pigments, fillers, adding The corresponding additives are viscous liquids prepared with organic solvents or water. The relatively authoritative book "Painting Technology" in the Chinese coatings industry defines it as follows: "Painting is a material that can be coated on the surface of an object by different construction techniques to form a firm adhesion, a certain strength, and a continuous coating." Solid film. The film formed in this way i...

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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Patent Type & Authority Applications(China)
IPC IPC(8): C09D103/04C09D7/12
CPCC09D103/04C08K2003/2275C08K2201/011C08L33/00C08K13/06C08K9/02C08K9/00C08K3/34C08K3/22
Inventor 江凯
Owner 广西顺帆投资有限公司
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