阅读说明：本技术 一种新型电磁炉磁性材料及其制备方法 (Novel electromagnetic oven magnetic material and preparation method thereof ) 是由 杨华 于 2021-06-11 设计创作，主要内容包括：本发明涉及电磁炉发热丝技术领域,具体为一种新型电磁炉磁性材料,按质量百分比包括如下原料：树脂以及低收缩剂18-27％；固化剂0.2-0.5％；脱模剂1-3％；磁性铁粉20-60％；氢氧化铝10-20％；玻璃纤维10-20％；色膏0.3-10％；碳酸钙以及其他5-10％。该新型电磁炉磁性材料兼具磁性材料以及复合材料的特点,减少了电磁炉中磁性板块的添加,从而减少了工艺,降低了成本。(The invention relates to the technical field of heating wires of induction cookers, in particular to a novel induction cooker magnetic material which comprises the following raw materials in percentage by mass: 18-27% of resin and low shrinkage agent; 0.2 to 0.5 percent of curing agent; 1-3% of a release agent; 20-60% of magnetic iron powder; 10-20% of aluminum hydroxide; 10-20% of glass fiber; 0.3-10% of color paste; calcium carbonate and other 5-10%. The novel electromagnetic oven magnetic material has the characteristics of both magnetic materials and composite materials, and the addition of magnetic plates in the electromagnetic oven is reduced, so that the process is reduced, and the cost is reduced.)

1. The novel magnetic material for the induction cooker is characterized by comprising the following raw materials in percentage by mass:

18-27% of resin and low shrinkage agent;

0.2 to 0.5 percent of curing agent;

1-3% of a release agent;

20-60% of magnetic iron powder;

10-20% of aluminum hydroxide;

10-20% of glass fiber;

0.3-10% of color paste;

calcium carbonate and other 5-10%.

2. The novel electromagnetic oven magnetic material as claimed in claim 1, characterized in that: the curing agent at least comprises one of divinyl triamine, dimethylaminopropylamine, dicyandiamide and trimethylhexamethylene diamine.

3. The novel electromagnetic oven magnetic material as claimed in claim 1, characterized in that: the low shrinkage agent at least comprises one of polyethylene, polystyrene and polyvinyl acetate.

4. The novel electromagnetic oven magnetic material as claimed in claim 1, characterized in that: the release agent is a high polymer release agent.

5. The novel electromagnetic oven magnetic material as claimed in claim 1, characterized in that: the resin adopts unsaturated resin and is mixed with the low shrinkage agent in a weight ratio of 2: 1.

6. The novel electromagnetic oven magnetic material as claimed in claim 1, characterized in that: the others include flame retardants, corrosion inhibitors, and antistatic agents.

7. The preparation method of the novel induction cooker magnetic material according to any one of claims 1 to 6, characterized by comprising the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

8. The preparation method of the novel electromagnetic oven magnetic material as claimed in claim 7, characterized in that: the rotating speed of the high-speed dispersion machine is 1500 revolutions per minute.

Technical Field

The invention relates to the technical field of heating wires of induction cookers, in particular to a novel induction cooker magnetic material and a preparation method thereof.

Background

The induction cooker is a common household appliance for cooking and heating, and when the induction cooker works, high-frequency alternating current is utilized to pass through the heating wire, so that the heating wire generates a magnetic field with high-frequency change, and eddy current is generated at the bottom of an iron pot placed on the induction cooker, so that food in the iron pot is heated, however, the magnetic permeability of the existing heating wire is not high, and the using effect is poor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a novel electromagnetic oven magnetic material and a preparation method thereof.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a novel electromagnetic oven magnetic material comprises the following raw materials in percentage by mass:

18-27% of resin and low shrinkage agent;

0.2 to 0.5 percent of curing agent;

1-3% of a release agent;

20-60% of magnetic iron powder;

10-20% of aluminum hydroxide;

10-20% of glass fiber;

0.3-10% of color paste;

calcium carbonate and other 5-10%.

In order to improve the curing performance of the novel induction cooker magnetic material, the invention improves that the curing agent at least comprises one of divinyl triamine, dimethylaminopropylamine, dicyandiamide and trimethylhexamethylene diamine.

In order to reduce the shrinkage rate of the resin in the process of processing and molding, the invention improves that the low shrinkage agent at least comprises one of polyethylene, polystyrene and polyvinyl acetate.

In order to facilitate demoulding in the processing process of the novel induction cooker magnetic material, the invention improves that the demoulding agent is a high polymer demoulding agent.

In order to improve the stability of the novel electromagnetic oven magnetic material, the invention improves that the resin adopts unsaturated resin and the low shrinkage agent are mixed in a weight ratio of 2: 1.

In order to improve the flame retardant property and the antistatic property of the novel electromagnetic oven magnetic material, the invention improves the flame retardant property, the corrosion inhibitor and the antistatic agent.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

In order to mix the components evenly, the invention improves that the rotating speed of the high-speed disperser is 1500 revolutions per minute.

(III) advantageous effects

Compared with the prior art, the invention provides a novel electromagnetic oven magnetic material and a preparation method thereof, and the novel electromagnetic oven magnetic material has the following beneficial effects:

the novel magnetic material for the induction cooker comprises a magnetic material,

1. the composite material has the characteristics of magnetic materials and composite materials, and reduces the addition of magnetic plates in the electromagnetic oven, thereby reducing the process and lowering the cost;

2. the preparation method is simple and easy to operate, and manpower and material resources are saved;

3. the processing process is environment-friendly and pollution-free.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the invention discloses a novel electromagnetic oven magnetic material which comprises the following raw materials in percentage by mass:

resin and low shrinkage agent 18%;

0.2 percent of curing agent;

1% of a release agent;

55.5 percent of magnetic iron powder;

10% of aluminum hydroxide;

10% of glass fiber;

0.3 percent of color paste;

calcium carbonate and other 5%.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

Example 2:

the invention discloses a novel electromagnetic oven magnetic material which comprises the following raw materials in percentage by mass:

resin and low shrinkage agent 27%;

0.5 percent of curing agent;

3% of a release agent;

20% of magnetic iron powder;

14.5 percent of aluminum hydroxide;

15% of glass fiber;

10% of color paste;

calcium carbonate and other 10%.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

Example 3:

the invention discloses a novel electromagnetic oven magnetic material which comprises the following raw materials in percentage by mass:

resin and low shrinkage agent 20%;

0.3 percent of curing agent;

2% of a release agent;

39% of magnetic iron powder;

15% of aluminum hydroxide;

15% of glass fiber;

0.7% of color paste;

calcium carbonate and other 8%.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

Example 4:

the invention discloses a novel electromagnetic oven magnetic material which comprises the following raw materials in percentage by mass:

resin and low shrinkage agent 15%;

0.2 percent of curing agent;

0.5 percent of release agent;

63% of magnetic iron powder;

8% of aluminum hydroxide;

8% of glass fiber;

0.3 percent of color paste;

calcium carbonate and other 5%.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

Example 5:

the invention discloses a novel electromagnetic oven magnetic material which comprises the following raw materials in percentage by mass:

resin and low shrinkage agent 25%;

1% of a curing agent;

4% of a release agent;

3% of magnetic iron powder;

22% of aluminum hydroxide;

21% of glass fiber;

12% of color paste;

calcium carbonate and 12% others.

The invention further provides a preparation method of the novel electromagnetic oven magnetic material, which comprises the following steps:

step one, weighing corresponding weight according to the proportion of each component of the formula;

step two, mixing the resin, the low shrinkage agent, the curing agent, the release agent and the other components, dispersing the mixture uniformly in a dispersion machine, and pouring the mixture into a kneader;

step three, continuously adding magnetic iron powder and calcium carbonate powder into the kneader, then controlling the kneader to work, and stirring the mixture for thirty minutes to uniformly mix the components;

adding glass fiber into the kneader, controlling the kneader to work, and stirring for ten minutes to uniformly mix the components;

and step five, pouring the uniformly mixed components in the kneader into a mould, and then thermoforming the mould to a specified shape.

The conventional electromagnetic oven heating wire on the market is taken as a comparative example 1, 5 examples and the comparative example 1 are subjected to magnetic permeability detection, and the detection results are shown in the following table:

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.