Starch-based biological fluorine-free oil-proof agent, emulsification system for preparing oil-proof agent and production process of emulsification system
阅读说明：本技术 淀粉基生物无氟的防油剂和制备该防油剂的乳化系统及其生产工艺 (Starch-based biological fluorine-free oil-proof agent, emulsification system for preparing oil-proof agent and production process of emulsification system ) 是由 苏双全 于 2020-07-25 设计创作，主要内容包括：本发明提供了一种淀粉基生物无氟的防油剂和制备该防油剂的乳化系统及其生产工艺,由木薯淀粉100-150重量份、硫酸铵5-15重量份、聚丙烯酸10-30重量份、去离子水200-300重量份、纳米二氧化硅5-10重量份、甘油40-50重量份、壳聚糖2-3重量份、聚乙烯醇15-20重量份、羧甲基纤维素5-10重量份、海藻酸钠1-2重量份、大豆分离蛋白5-8重量份和聚丙烯酰胺0.5-1重量份制得淀粉基生物无氟防油剂。本发明的淀粉基生物无氟防油剂具有羧基、酯基、酰胺基官能团,高速乳化后达到半纳米当量级,可以渗入到纸浆纤维体的空隙进行填充,并在纸浆纤维体外附着成膜,阻止油脂的渗透,使纸浆环保餐具的防油等级可达到9级。(The invention provides a starch-based biological fluorine-free oil-proof agent, an emulsification system for preparing the oil-proof agent and a production process thereof, wherein the starch-based biological fluorine-free oil-proof agent is prepared from 100 weight parts of cassava starch, 5-15 weight parts of ammonium sulfate, 10-30 weight parts of polyacrylic acid, 300 weight parts of deionized water 200, 5-10 weight parts of nano silicon dioxide, 40-50 weight parts of glycerol, 2-3 weight parts of chitosan, 15-20 weight parts of polyvinyl alcohol, 5-10 weight parts of carboxymethyl cellulose, 1-2 weight parts of sodium alginate, 5-8 weight parts of soybean protein isolate and 0.5-1 weight part of polyacrylamide. The starch-based biological fluorine-free oil-proof agent has carboxyl, ester and amide functional groups, reaches a half-nanometer equivalent level after high-speed emulsification, can permeate into gaps of a paper pulp fiber body for filling, is attached to a film outside the paper pulp fiber body to prevent oil from permeating, and enables the oil-proof level of the paper pulp environment-friendly tableware to reach 9 levels.)
1. The starch-based biological fluorine-free oil-proof agent is characterized by comprising the following raw materials in parts by weight: 100-150 parts of cassava starch, 5-15 parts of ammonium sulfate, 10-30 parts of polyacrylic acid, 300 parts of deionized water, 5-10 parts of nano silicon dioxide, 40-50 parts of glycerol, 2-3 parts of chitosan, 15-20 parts of polyvinyl alcohol, 5-10 parts of carboxymethyl cellulose, 1-2 parts of sodium alginate, 5-8 parts of soybean protein isolate and 0.5-1 part of polyacrylamide.
2. The starch-based biological fluorine-free oil-proof agent according to claim 1, wherein the starch-based biological fluorine-free oil-proof agent comprises the following raw materials in parts by weight: 120 parts of cassava starch, 10 parts of ammonium sulfate, 20 parts of polyacrylic acid, 250 parts of deionized water, 8 parts of nano silicon dioxide, 45 parts of glycerol, 2.5 parts of chitosan, 18 parts of polyvinyl alcohol, 7 parts of carboxymethyl cellulose, 1.5 parts of sodium alginate, 6 parts of soybean protein isolate and 0.7 part of polyacrylamide.
3. An emulsification system for preparing the starch-based bio-fluorine-free oil-proof agent according to any one of claims 1 or 2, wherein the emulsification system comprises an emulsion container (1) and a PLC (programmable logic controller) (2), a feeding port of the emulsion container (1) is connected with a discharging port of a meter (6), a feeding port of the meter (6) is respectively communicated with a first discharging port of a first batching container (3), a second discharging port of a second batching container (4) and a third discharging port of a third batching container (5), the first discharging port, the second discharging port and the third discharging port are controlled to be opened or closed through a feeding change-over switch (8), a weighing sensor (7) is arranged in the meter (6), a stirrer with a motor (9) is arranged in the emulsion container (1), the feeding change-over switch (8), the weighing sensor (7) and the third discharging port are controlled to be opened or closed through the feeding change-over switch (8), The motor (9) is respectively electrically connected and in signal connection with the PLC (2) so that the speed difference of the motor (9) controlled by the PLC (2) can reach half nanometer equivalent level to the starch-based biological fluorine-free oil-proof agent in the emulsion container (1).
4. A process for preparing a starch-based bio-fluorine-free oil repellent agent using the emulsification system of claim 3, wherein the process comprises the steps of:
(1a) putting the cassava starch, ammonium sulfate and polyacrylic acid into a ball mill, stirring, and carrying out oxidation reaction on the cassava starch at the temperature of 50-80 ℃ to obtain modified cassava starch;
(2a) adding deionized water, nano silicon dioxide and glycerol into the modified cassava starch obtained in the step (1a), and stirring for 20-30 minutes at the temperature of 80-85 ℃ to obtain a first mixed solution;
(3a) stirring chitosan, polyvinyl alcohol and carboxymethyl cellulose in water bath at 60-70 deg.C for 20-30 min, adding soybean protein isolate and sodium alginate, and stirring at 50-65 deg.C for 30-50 min to obtain a second mixed solution;
(4a) and (3) adding the first mixed solution obtained in the step (2a) and the second mixed solution obtained in the step (3a) and polyacrylamide into the emulsification system for emulsification so as to obtain the starch-based biological fluorine-free oil-proofing agent.
5. The production process according to claim 4, wherein, in the step (4a), the first mixed liquid is stored in a first proportioning container (3), the second mixed liquid is stored in a second proportioning container (4), the polyacrylamide is stored in a third batching container (5), the PLC (2) firstly controls a feeding change-over switch (8) to sequentially open the first batching container (3), the second batching container (4) and the third batching container (5), the first mixed liquid, the second mixed liquid and the polyacrylamide are sequentially weighed by a weighing sensor (7) in a meter (6) and then enter an emulsion container (1), and a PLC (programmable logic controller) controls a speed difference of a motor (9) to drive a stirrer to emulsify the mixed liquid in the emulsion container (1) at a high speed so as to prepare the semi-nanometer equivalent starch-based biological fluorine-free oil-proof agent.
6. The process according to claim 4, wherein in the step (1a), the stirring speed is 300-350r/min, and the reaction time is 40-60 min.
7. The production process as claimed in claim 4, wherein in the step (2a), the stirring speed is 300-350 r/min; in the step (3a), the stirring speed is 400-500 r/min.
8. The production process as claimed in claim 4, wherein in the step (4a), the rotation speed of the high-speed emulsification device is 15000-.
9. The production process according to claim 4, wherein the starch-based biological fluorine-free oil-proofing agent comprises the following raw materials in parts by weight: 100-150 parts of cassava starch, 5-15 parts of ammonium sulfate, 10-30 parts of polyacrylic acid, 300 parts of deionized water, 5-10 parts of nano silicon dioxide, 40-50 parts of glycerol, 2-3 parts of chitosan, 15-20 parts of polyvinyl alcohol, 5-10 parts of carboxymethyl cellulose, 1-2 parts of sodium alginate, 5-8 parts of soybean protein isolate and 0.5-1 part of polyacrylamide.
10. The production process according to claim 4, wherein the starch-based biological fluorine-free oil-proofing agent comprises the following raw materials in parts by weight: 120 parts of cassava starch, 10 parts of ammonium sulfate, 20 parts of polyacrylic acid, 250 parts of deionized water, 8 parts of nano silicon dioxide, 45 parts of glycerol, 2.5 parts of chitosan, 18 parts of polyvinyl alcohol, 7 parts of carboxymethyl cellulose, 1.5 parts of sodium alginate, 6 parts of soybean protein isolate and 0.7 part of polyacrylamide.
Technical Field
The invention relates to the technical field of paper pulp molding disposable catering utensils, in particular to a starch-based biological fluorine-free oil-proof agent, an emulsification system for preparing the oil-proof agent and a production process thereof.
Background
With the development of economy and the improvement of living standard, people pay more and more attention to the safety, functionality and environmental friendliness of daily necessities. In the aspect of daily paper, the application field of oil-proof paper is more and more extensive, in particular to the aspect of food oil-proof packaging, a great amount of daily paper pulp molded disposable tableware is required to have oil-proof function, and the packaging material is required not to cause food pollution and environmental pollution. The fluorine-free oil-proof agent taking starch-based organisms as a raw material is used as environment-friendly biodegradable plastic to replace the traditional water-proof and oil-proof chemical preparation, and has strong competitiveness and wide application prospect.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a starch-based biological fluorine-free oil-proof agent, an emulsification system for preparing the oil-proof agent and a production process thereof, so as to overcome the defects in the prior art.
In order to achieve the aim, the invention provides a starch-based biological fluorine-free oil-proof agent, which comprises the following raw materials in parts by weight: 100-150 parts of cassava starch, 5-15 parts of ammonium sulfate, 10-30 parts of polyacrylic acid, 300 parts of deionized water, 5-10 parts of nano silicon dioxide, 40-50 parts of glycerol, 2-3 parts of chitosan, 15-20 parts of polyvinyl alcohol, 5-10 parts of carboxymethyl cellulose, 1-2 parts of sodium alginate, 5-8 parts of soybean protein isolate and 0.5-1 part of polyacrylamide.
As a further description of the starch-based biological fluorine-free oil-proof agent of the present invention, preferably, the starch-based biological fluorine-free oil-proof agent comprises the following raw materials in parts by weight: 120 parts of cassava starch, 10 parts of ammonium sulfate, 20 parts of polyacrylic acid, 250 parts of deionized water, 8 parts of nano silicon dioxide, 45 parts of glycerol, 2.5 parts of chitosan, 18 parts of polyvinyl alcohol, 7 parts of carboxymethyl cellulose, 1.5 parts of sodium alginate, 6 parts of soybean protein isolate and 0.7 part of polyacrylamide.
In order to realize another object of the invention, the invention also provides an emulsifying system for preparing the starch-based biological fluorine-free oil-proof agent, the emulsifying system comprises an emulsion container and a PLC (programmable logic controller), a feeding port of the emulsion container is connected with a discharging port of a meter, the feeding port of the meter is respectively communicated with a first discharging port of a first batching container, a second discharging port of a second batching container and a third discharging port of a third batching container, the first discharge port, the second discharge port and the third discharge port are controlled to be opened or closed by a feeding change-over switch, a weighing sensor is arranged in the meter, a stirrer with a motor is arranged in the emulsion container, the feeding change-over switch, the weighing sensor and the motor are respectively and electrically connected with a PLC controller and in signal connection, so that the speed difference of the PLC controller for controlling the motor can reach the equivalent level of half nanometer for the starch-based biological fluorine-free oil-proof agent in the emulsion container.
In order to achieve another object of the present invention, the present invention further provides a production process for preparing a starch-based bio-fluorine-free oil repellent agent by using the emulsification system, wherein the production process comprises the following steps:
(1a) putting the cassava starch, ammonium sulfate and polyacrylic acid into a ball mill, stirring, and carrying out oxidation reaction on the cassava starch at the temperature of 50-80 ℃ to obtain modified cassava starch;
(2a) adding deionized water, nano silicon dioxide and glycerol into the modified cassava starch obtained in the step (1a), and stirring for 20-30 minutes at the temperature of 80-85 ℃ to obtain a first mixed solution;
(3a) stirring chitosan, polyvinyl alcohol and carboxymethyl cellulose in water bath at 60-70 deg.C for 20-30 min, adding soybean protein isolate and sodium alginate, and stirring at 50-65 deg.C for 30-50 min to obtain a second mixed solution;
(4a) and (3) adding the first mixed solution obtained in the step (2a) and the second mixed solution obtained in the step (3a) and polyacrylamide into the emulsification system for emulsification so as to obtain the starch-based biological fluorine-free oil-proofing agent.
As a further explanation of the production process of the present invention, preferably, in step (4a), the first mixed solution is stored in a first blending container, the second mixed solution is stored in a second blending container, the polyacrylamide is stored in a third blending container, a PLC controller first controls a feeding switch to sequentially open the first blending container, the second blending container and the third blending container, the first mixed solution, the second mixed solution and the polyacrylamide are sequentially weighed by a weighing sensor in a meter and then enter an emulsion container, and the PLC controller controls a speed difference of a motor to drive the stirrer to perform high-speed emulsification on the mixed solution in the emulsion container, so as to prepare the starch-based bio-fluorine-free oil repellent agent with a half nanometer equivalent weight.
As a further explanation of the production process of the present invention, it is preferable that in the step (1a), the stirring speed is 300-350r/min, and the reaction time is 40-60 minutes.
As a further explanation of the production process of the present invention, it is preferable that in the step (2a), the stirring speed is 300-350 r/min; in the step (3a), the stirring speed is 400-500 r/min.
As a further explanation of the production process of the present invention, it is preferable that in the step (4a), the rotation speed of the high-speed emulsification apparatus is 15000-.
As a further explanation of the production process of the present invention, preferably, the starch-based biological fluorine-free oil-proofing agent comprises the following raw materials in parts by weight: 100-150 parts of cassava starch, 5-15 parts of ammonium sulfate, 10-30 parts of polyacrylic acid, 300 parts of deionized water, 5-10 parts of nano silicon dioxide, 40-50 parts of glycerol, 2-3 parts of chitosan, 15-20 parts of polyvinyl alcohol, 5-10 parts of carboxymethyl cellulose, 1-2 parts of sodium alginate, 5-8 parts of soybean protein isolate and 0.5-1 part of polyacrylamide.
As a further explanation of the production process of the present invention, preferably, the starch-based biological fluorine-free oil-proofing agent comprises the following raw materials in parts by weight: 120 parts of cassava starch, 10 parts of ammonium sulfate, 20 parts of polyacrylic acid, 250 parts of deionized water, 8 parts of nano silicon dioxide, 45 parts of glycerol, 2.5 parts of chitosan, 18 parts of polyvinyl alcohol, 7 parts of carboxymethyl cellulose, 1.5 parts of sodium alginate, 6 parts of soybean protein isolate and 0.7 part of polyacrylamide.
The invention has the following beneficial effects: the starch-based biological fluorine-free oil-proof agent has carboxyl, ester and amide functional groups, reaches a half-nanometer equivalent level after high-speed emulsification, can permeate into gaps of a paper pulp fiber body for filling, and is attached to the outside of the paper pulp fiber body to form a film to prevent grease from permeating, so that the oil-proof level of the paper pulp environment-friendly tableware can reach 9 levels, and the paper pulp environment-friendly tableware can resist hot oil with the temperature of 85-100 ℃ without leakage. Wherein, cassava starch is modified by ammonium sulfate and polyacrylic acid to reduce the number of starch hydroxyl, improve the content of carboxyl and carbonyl, reduce the polymerization degree of starch by the hydrophilic action of carboxyl, add nano silicon dioxide and glycerin to form a gel network structure in the starch film, improve the oil-proof performance, an oil-proof film formed by added soybean protein isolate and sodium alginate fills the gaps between fibers and is attached to the outside of the paper pulp fiber to form a film, the amino group on the chitosan molecule reacts with the starch hydroxyl, and improve the crosslinking degree of the product after film forming, the compactness of the product after film forming is improved, the chitosan, the polyvinyl alcohol and the carboxymethyl fiber can increase the compatibility of starch and other substances, a small amount of polyacrylamide is added, the amido functional group is increased, the high adhesive force and cohesive force to paper fibers are realized, and the film forming property is very good.
Drawings
FIG. 1 is a schematic diagram of the structure of the emulsification system of the present invention.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, the emulsifying system of the present invention comprises an
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