Antibacterial environment-friendly tableware and preparation method thereof

A tableware and environmental protection technology, applied in the field of material processing, can solve the problems of increasing food storage time and poor mechanical properties of tableware, and achieve the effect of good mechanical properties, excellent mechanical properties, and accelerated degradation rate

Pending Publication Date: 2022-04-26
宁夏青林华源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN107556538A discloses a degradable environment-friendly antibacterial tableware and its preparation method, which is made of the following raw materials: bamboo fiber, starch, thermosetting resin, oil-repellent, water-repellent, nano-silver; wherein bamboo and bamboo leaves are used as the main Raw materials are low in cost, widely sourced, and biodegradable. Adding nano-silver can make tableware have a good antibacterial effect and increase food preservation time; however, the mechanical properties of tableware are relatively poor, which limits the application to a certain extent.

Method used

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  • Antibacterial environment-friendly tableware and preparation method thereof
  • Antibacterial environment-friendly tableware and preparation method thereof

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Effect test

Embodiment 1

[0046] An antibacterial environment-friendly tableware is composed of the following raw materials in parts by weight: 70 parts by weight of polylactic acid, 10 parts by weight of gum arabic, 2.5 parts by weight of sodium bicarbonate, 20 parts by weight of polyvinyl alcohol, 15 parts by weight of poly 3-hydroxybutyrate, 4 parts by weight of calcium stearate, 2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 25 parts by weight of inorganic filler, and 15 parts by weight of water.

[0047] Described inorganic filler is talcum powder;

[0048] A kind of preparation method of antibacterial environment-friendly tableware is as follows:

[0049] S1, take each component raw material by weight;

[0050] S2, polylactic acid, gum arabic, sodium bicarbonate, polyvinyl alcohol, poly 3-hydroxybutyrate, calcium stearate, 3-(2,3-glycidyloxy) propyltrimethoxysilane, talc Mix powder and water, and stir at 50°C and 400rpm for 10 minutes to obtain a mixed slurry;

[0051] S3. In...

Embodiment 2

[0054] An antibacterial environment-friendly tableware is composed of the following raw materials in parts by weight: 70 parts by weight of polylactic acid, 10 parts by weight of gum arabic, 2.5 parts by weight of sodium bicarbonate, 20 parts by weight of polyvinyl alcohol, 15 parts by weight of poly 3-hydroxybutyrate, 4 parts by weight of calcium stearate, 2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 25 parts by weight of inorganic filler, and 15 parts by weight of water.

[0055] Described inorganic filler is modified talcum powder;

[0056] The preparation method of the modified talc powder is as follows: (1) Preparation of the modified talc powder emulsion: take 20 parts by weight of pea starch, 40 parts by weight of talcum powder, and 100 parts by weight of water, mix them, and stir at 500 rpm for 30 minutes to form a suspension solution; put it under ultrasonic power of 400W and ultrasonic frequency of 45kHz for 40min, then gelatinize at 85°C for 2.5h...

Embodiment 3

[0064] An antibacterial environment-friendly tableware is composed of the following raw materials in parts by weight: 70 parts by weight of polylactic acid, 10 parts by weight of gum arabic, 2.5 parts by weight of sodium bicarbonate, 20 parts by weight of polyvinyl alcohol, 15 parts by weight of poly 3-hydroxybutyrate, 4 parts by weight of calcium stearate, 2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 25 parts by weight of inorganic filler, and 15 parts by weight of water.

[0065] Described inorganic filler is modified talcum powder;

[0066] The preparation method of the modified talcum powder is as follows: (1) Preparation of modified starch: 30 parts by weight of pea starch and 70 parts by weight of water were mixed, stirred at 400rpm for 5min, and the pH was adjusted with 1mol / L aqueous sodium hydroxide solution. 10. Add 2 parts by weight of glycerin and 6 parts by weight of itaconic anhydride, stir in a nitrogen atmosphere at 70°C and 400rpm for 2h to...

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Abstract

The invention discloses antibacterial environment-friendly tableware and a preparation method thereof. The preparation method comprises the following steps: weighing the following raw materials: polylactic acid, Arabic gum, sodium bicarbonate, polyvinyl alcohol, poly-3-hydroxybutyrate, calcium stearate, a coupling agent, an inorganic filler, an antibacterial agent and water; mixing and stirring the raw materials to obtain mixed slurry; injecting the mixed slurry into a mold for hot pressing, and demolding after molding; and taking out the demolded finished product, drying, trimming, deburring, and disinfecting to obtain the finished product. The antibacterial environment-friendly tableware disclosed by the invention has good mechanical property, antibacterial property and degradation property.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to an antibacterial environment-friendly tableware and a preparation method thereof. Background technique [0002] The materials used for environmentally friendly degradable tableware include natural materials such as starch, plant fiber, straw, etc., and artificial materials that use plastics such as polylactic acid as the main component and add fillers such as photosensitizers. Chemical and biological degradation reactions occur, and finally carbon dioxide and water are formed. Chinese patent CN107556538A discloses a degradable environment-friendly antibacterial tableware and its preparation method, which is made of the following raw materials: bamboo fiber, starch, thermosetting resin, oil-repellent, water-repellent, nano-silver; wherein bamboo and bamboo leaves are used as the main Raw materials are low in cost, widely sourced, and biodegradable. Adding ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L5/00C08L29/04C08L5/08C08K3/34C08K9/04C08K5/098C08K3/28C08K13/06
CPCC08L67/04C08L2201/02C08L2201/06C08L5/00C08L29/04C08K3/34C08K9/08C08K9/04C08L5/08C08K5/098C08K3/28C08K13/06
Inventor 薛慧军
Owner 宁夏青林华源科技有限公司
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