CN111642969A

CN111642969A - Multifunctional cooking container for microwave oven and preparation method thereof

Info

Publication number: CN111642969A
Application number: CN202010515721.1A
Authority: CN
Inventors: 刘琼玲
Original assignee: Zhongshan Yili Plastic Products Co ltd
Current assignee: Zhongshan Yili Plastic Products Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-09-11

Abstract

The invention belongs to the technical field of cookers, and particularly relates to a multifunctional cooking container for a microwave oven, which comprises a container body and a cover body covering the container body, wherein the container body and the cover body are made of materials capable of shielding microwaves, and the outer surface of the container body is provided with a wave-absorbing heating piece which comprises the following components in percentage by mass: 30-60% of high-temperature vulcanized silicone rubber, 5-15% of microwave absorbent, 25-35% of inorganic heat stabilizer, 5-20% of reinforcing agent, 2-5% of structure control agent, 1-2% of crosslinking agent and 1-3% of organic heat-resistant stabilizer. After the container is placed in a microwave oven, the container body and the cover body can shield microwaves emitted by the microwave oven, the microwaves emitted by the microwave oven are absorbed by the wave-absorbing heating sheet arranged on the outer surface of the container body and then are quickly converted into heat energy, and then the heat energy is transferred to food, so that the natural nutrition and moisture of the food can be effectively locked, and multiple functions of steaming, boiling, braising and frying are realized.

Description

Multifunctional cooking container for microwave oven and preparation method thereof

Technical Field

The invention belongs to the technical field of cookers, and particularly relates to a multifunctional cooking container for a microwave oven and a preparation method thereof.

Background

Microwave ovens have been popular for many years and are generally used to heat food due to their fast heating rate. The heating principle of the microwave oven is that microwave is emitted from a microwave emitter in the microwave oven to penetrate through a container for holding food, so that water molecules in the food are vibrated and rubbed with each other to heat the food. However, such a microwave heating method may damage natural nutrients of food and cause water loss, and may also require a certain material for the microwave heating container, which is generally only a non-metal material such as plastic, ceramic or glass. In addition, the traditional microwave oven can only heat food generally, and the cooking mode is single.

Disclosure of Invention

One of the objects of the present invention is: to prior art's not enough, provide a multi-functional culinary art container for microwave oven, avoid the microwave directly to the moisture loss that the food heating caused, the programming rate is fast, has multiple culinary art function moreover.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a multi-functional culinary art container for microwave oven, includes vessel and lid fit the lid of vessel, the vessel with the lid sets up to the material that can shield the microwave, the surface of vessel is provided with and inhales ripples heating plate, inhale ripples heating plate and include the following composition of mass percent: 30-60% of high-temperature vulcanized silicone rubber, 5-15% of microwave absorbent, 25-35% of inorganic heat stabilizer, 5-20% of reinforcing agent, 2-5% of structure control agent, 1-2% of crosslinking agent and 1-3% of organic heat-resistant stabilizer.

Among them, silicone rubber means a rubber having a main chain composed of silicon and oxygen atoms alternately, and two organic groups are usually bonded to the silicon atom. The silicone rubber is classified into heat-curable silicone rubber (also referred to as high-temperature-curable silicone rubber) and room-temperature-curable silicone rubber. The high-temperature vulcanized silicone rubber means that the process of changing polysiloxane into elastomer is formed through high-temperature vulcanization.

As an improvement of the multifunctional cooking container for the microwave oven, the wave-absorbing heating sheet is arranged at the bottom of the container body. The wave-absorbing heating piece comprises but is not limited to be arranged at the bottom of the container body, and the heating piece only needs to be arranged at the bottom of the container body when the container is not filled with food under the normal condition from the perspective of saving cost.

As an improvement of the multifunctional cooking container for the microwave oven, the inner surface of the container body is coated with a non-stick coating, and the cover body is provided with a pressure relief groove. The non-stick coating can achieve low oil or oil-free cooking, and achieve a healthy low-fat diet. The pressure relief groove can prevent the pressure in the container from being overlarge.

As an improvement of the multifunctional cooking container for the microwave oven, the high-temperature vulcanized silicone rubber comprises at least one of methyl vinyl silicone rubber, methyl silicone rubber and methyl phenyl vinyl silicone rubber. Preferably, the high-temperature vulcanized silicone rubber is methyl vinyl silicone rubber, also called vinyl silicone rubber, which is prepared by copolymerizing dimethyl siloxane and a small amount of vinyl siloxane. The content of the methylvinylsiloxane unit has great influence on the vulcanization effect and the heat resistance of the vulcanized rubber, the effect is not obvious when the content is too small, and the heat resistance of the vulcanized rubber is reduced when the content is too large. Furthermore, the high-temperature vulcanized silicone rubber also comprises fluorosilicone rubber, and the manufacturing cost is greatly increased due to the fact that the fluorosilicone rubber is high in cost and is added in too much amount. But the fluorosilicone rubber not only has the excellent performances of the organosilicon material such as heat resistance, cold resistance, high voltage resistance, weather aging resistance and the like, but also has the excellent oil resistance, acid and alkali resistance and lower surface energy performance of the organofluorine material due to the introduction of the fluorine-containing group.

As an improvement of the multifunctional cooking container for the microwave oven, the microwave absorbent comprises at least one of acetylene black, ferrite and carbon nano tubes. Wherein the carbon nano tube is a nickel-plated carbon nano tube. The microwave absorbing agent is added in too much proportion, the microwave absorbing heating sheet has undesirable effect of absorbing microwaves, and the microwave absorbing heating sheet is easy to age and crack; the microwave absorbent is added too little, and the heating rate of the microwave absorbing heating sheet absorbing the microwaves is too slow.

As an improvement of the multifunctional cooking container for the microwave oven, the inorganic heat stabilizer comprises at least one of mixed ferrite, carbonyl iron powder and silicon carbide. The rate of absorbing the microwave conversion heat energy by the wave-absorbing heating sheet is too high due to too much addition proportion of the inorganic heat stabilizer; the inorganic heat stabilizer is added in a too small proportion, and the wave-absorbing heating sheet has large temperature fluctuation. The mixed ferrite is a mixture of nickel-zinc ferrite and ferric oxide, and can further improve the heating rate and maintain the temperature stability.

As an improvement of the multifunctional cooking container for the microwave oven, the reinforcing agent comprises modified precipitated silica or modified fumed silica. The white carbon black prepared by the gas phase method is amorphous flocculent semi-transparent solid colloidal nano silicon dioxide, has large specific surface area and active hydroxyl groups on the surface, is mutually associated by hydrogen bonds to form an aggregation state, and has the particle size of 5-100 nm, preferably 10-20 nm. The strength improvement of the white carbon black prepared by the precipitation method on the wave-absorbing heating sheet is lower than that of the white carbon black prepared by the gas phase method. However, under high temperature conditions, the existence of active hydroxyl can cause siloxane chain recombination and degradation, so that the heat resistance of the silicone rubber can be improved by treating and modifying fumed silica or precipitated silica by surface treating agents of Hexamethyldisilazane (HMDS), diphenylsilanediol and octamethylcyclotetrasiloxane in advance.

As an improvement of the multifunctional cooking container for the microwave oven, the structure control agent comprises at least one of hydroxyl silicone oil, methyl silicone oil and ethyl silicone oil. The hydroxyl silicone oil is linear polydimethylsiloxane with the end group of hydroxyl, and Si-O in the hydroxyl silicone oil has higher thermal stability; the stability of the Si-O-Si bond can be improved by the dipole induction effect of the Si-O-Si bond on the hydrocarbon group bonded to the Si atom. The structure of the silicon-oxygen chain also endows the organic silicon with low surface tension and weak intermolecular force, and the hydroxyl silicone oil has good hydrophobicity due to the special structure. The methyl intermolecular forces are inversely proportional to the sixth power of the intermolecular distance, and increasing the distance weakens the intermolecular forces, so that dimethylsiloxane has much weaker molecular force than hydrocarbon and therefore has a lower surface tension than hydrocarbon of similar molar mass, and the low surface tension of polysiloxane makes the hydroxy silicone oil spread easily at the interface. The hydroxyl silicone oil is also used as a structural control agent of the silicone rubber, so that the processing technology of the silicone rubber is simplified, the processing performance is improved, and the transparency of the wave-absorbing heating sheet is increased.

As an improvement of the multifunctional cooking container for the microwave oven, the cross-linking agent comprises a peroxide vulcanizing agent. Peroxide vulcanizing agents are organic vulcanizing agents containing peroxy groups (one-O-one) in the molecule. The peroxide vulcanizing agent comprises at least one of bis-dipenta vulcanizing agent, dicumyl peroxide (DCP) and di-tert-butyl peroxide (DTBP). Among them, di-tert-butyl peroxide is easy to gasify, dicumyl peroxide is easy to generate odor, the di-penta vulcanizing agent can improve the tensile strength and hardness of the product, the elongation and compression deformation are low, and the odor after vulcanization is the smallest in alkyl peroxide.

As an improvement of the multifunctional cooking container for the microwave oven, the organic heat-resistant stabilizer comprises rare earth nano materials. The rare earth nano material has high surface activity and is easy to disperse in the silicon rubber. The rare earth element has large atomic radius and strong complexing capability, has special complexing effect on Si, can increase the crosslinking density of the silicon rubber material and the stability of a molecular chain, and effectively improves the heat resistance of the product. Preferably, the organic heat-resistant stabilizer SH-826. The organic heat-resistant stabilizer can effectively prevent the oxidative crosslinking of the side chain of the silicon rubber and the cyclization and depolymerization of the main chain, improve the thermal oxidation stability of the side group of the silicon rubber, improve the temperature resistance of the silicon rubber to about 290-300 ℃, and resist the temperature of 350 ℃ in short time. After the silicone rubber organic heat-resistant stabilizer SH-826 is added, the flexibility, resilience and surface hardness of the silicone rubber can be kept, the mechanical property is not obviously changed, and the silicone rubber organic heat-resistant stabilizer has excellent electrical insulation property, weather resistance, ozone resistance and air permeability, and is nontoxic and tasteless. After the organic heat-resistant stabilizer is added, the hardness of the silicon rubber is reduced, and the elongation at break of the tensile strength is increased, so that the physical and mechanical properties of the silicon rubber are improved.

Another object of the present invention is to provide a method for manufacturing a multifunctional cooking container for a microwave oven, as described in any one of the above-mentioned specifications, comprising the following operations:

s1, weighing the high-temperature vulcanized silicone rubber, the reinforcing agent, the structure control agent, the microwave absorbent, the inorganic heat stabilizer, the organic heat-resistant stabilizer and the crosslinking agent according to the mass percentage for later use;

s2, firstly putting the high-temperature vulcanized silicone rubber into an internal mixer for mixing for 3-5 minutes, then putting the reinforcing agent and the structure control agent into the internal mixer for mixing for 5-15 minutes, and finally putting the microwave absorbent and the inorganic heat stabilizer into the internal mixer for mixing for at least 10 minutes, and uniformly mixing and pouring out; turning for 3-5 times, and cooling for 24-72 hours for later use;

s3, adding an organic heat-resistant stabilizer and a cross-linking agent into the spare part in the S2, mixing for at least 10 minutes, controlling the temperature to be lower than 80 ℃, and cooling to be used as a wave-absorbing heating material for later use;

s4, cleaning the container, coating an adhesive, and drying for later use;

and S5, placing the wave-absorbing heating material prepared in the S3 and the container coated with the adhesive in the S4 into a forming die for forming to obtain the multifunctional cooking container for the microwave oven.

Compared with the prior art, the beneficial effects of the invention include but are not limited to:

the invention provides a multifunctional cooking container for a microwave oven, which comprises a container body and a cover body covering the container body, wherein the container body and the cover body are made of materials capable of shielding microwaves, and a wave-absorbing heating piece is arranged on the outer surface of the container body and comprises the following components in percentage by mass: 30-60% of high-temperature vulcanized silicone rubber, 5-15% of microwave absorbent, 25-35% of inorganic heat stabilizer, 5-20% of reinforcing agent, 2-5% of structure control agent, 1-2% of crosslinking agent and 1-3% of organic heat-resistant stabilizer.

After the multifunctional cooking container for the microwave oven is placed in the microwave oven, the container body and the cover body can shield microwaves emitted by the microwave oven, the microwaves emitted by the microwave oven are absorbed by the wave-absorbing heating sheet arranged on the outer surface of the container body and then are quickly converted into heat energy, and then the heat energy is transferred to food, so that the natural nutrition and moisture of the food can be effectively locked, and multiple functions of steaming, boiling, braising and frying are realized.

According to the invention, the wave-absorbing heating sheet adopts high-temperature vulcanized silicone rubber as a matrix, and a microwave absorbent and an inorganic heat stabilizer with appropriate components are added, so that the wave-absorbing heating sheet has an excellent wave-absorbing effect, can stably absorb microwave to raise temperature, and has a stable temperature rise rate. According to the invention, the formula of the wave-absorbing heating sheet is also added with the reinforcing agent, the structure control agent and the organic heat-resistant stabilizer, so that the wave-absorbing heating sheet has the characteristics of high heating rate, high strength, difficult aging and good high-temperature resistance.

Drawings

Fig. 1 is a schematic view illustrating a structure of a multifunctional cooking vessel for a microwave oven according to the present invention.

In the figure: 1-a container body, 2-a cover body and 3-a wave-absorbing heating sheet.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and drawings in the specification, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.

The invention provides a multifunctional cooking container for a microwave oven, which comprises a container body and a cover body covering the container body, wherein the container body and the cover body are made of materials capable of shielding microwaves, and the outer surface of the container body is provided with a wave-absorbing heating piece which comprises the following components in percentage by mass: 30-60% of high-temperature vulcanized silicone rubber, 5-15% of microwave absorbent, 25-35% of inorganic heat stabilizer, 5-20% of reinforcing agent, 2-5% of structure control agent, 1-2% of crosslinking agent and 1-3% of organic heat-resistant stabilizer. The container body is made of metal, the cover body contains metal, the metal can improve the heat conduction efficiency, and the container body is preferably made of aluminum-plated material. Furthermore, particles capable of shielding microwaves are added in the materials of the container body and the cover body, so that the microwaves are prevented from penetrating through the container body and the cover body.

Preferably, the heating sheet is disposed at the bottom of the container body. From the perspective of saving cost, when the container is not filled with food under normal conditions, only the wave-absorbing heating piece is arranged at the bottom of the container body.

Preferably, the inner surface of the container body is further coated with a non-stick coating, and the cover body is further provided with a pressure relief groove. The non-stick coating can achieve low oil or oil-free cooking, and achieve a healthy low-fat diet. The pressure relief groove can prevent the pressure in the container from being overlarge.

Preferably, the high-temperature vulcanized silicone rubber includes at least one of methyl vinyl silicone rubber, methyl silicone rubber, and methyl phenyl vinyl silicone rubber. More preferably, the high-temperature vulcanized silicone rubber is 30%, 35%, 40%, 45%, 50%, 55%, or 60% by mass. Further preferably, the fluorine-silicon rubber further comprises 5-10% of fluorine-silicon rubber.

Preferably, the microwave absorber includes at least one of acetylene black, ferrite, and carbon nanotubes. More preferably, the microwave absorbent is 5%, 10% or 15% by mass.

Preferably, the inorganic heat stabilizer includes at least one of mixed ferrite, carbonyl iron powder and silicon carbide. More preferably, the inorganic heat stabilizer is 25%, 30% or 35% by mass.

Preferably, the reinforcing agent comprises modified precipitated silica or modified fumed silica. More preferably, the reinforcing agent is 5%, 10%, 15% or 20% by mass.

Preferably, the structure-controlling agent includes at least one of a hydroxy silicone oil, a methyl silicone oil, and an ethyl silicone oil. More preferably, the mass percentage of the structure-controlling agent is 2%, 3%, 4% or 5%.

Preferably, the crosslinking agent is a peroxide curing agent. Further preferably, the vulcanizing agent is a bis-dipenta vulcanizing agent. More preferably, the mass percentage of the crosslinking agent is 1%, 1.5% or 2%.

Preferably, the organic heat-resistant stabilizer comprises a rare earth nanomaterial. Preferably, the organic heat stabilizer is 1%, 1.5%, 2%, 2.5% or 3% by mass.

Example 1

As shown in fig. 1, the present embodiment provides a multifunctional cooking container for a microwave oven, including a container body 1 and a cover body 2 covering the container body, the container body 1 and the cover body 2 are made of a material capable of shielding microwaves, the outer surface of the container body 1 is provided with a wave-absorbing heating sheet 3, and the wave-absorbing heating sheet 3 includes the following components by mass percent: 30% of methyl vinyl silicone rubber, 10% of acetylene carbon black, 30% of nickel-zinc ferrite and ferric oxide mixed ferrite, 20% of white carbon black, 5% of hydroxy silicone oil, 2% of dipenta-vulcanizing agent and 3% of organic heat-resistant stabilizer SH-826.

The preparation method of the multifunctional cooking container for the microwave oven comprises the following steps:

s1, preparing the container body 1 and the cover body 2, and weighing the raw materials for preparing the wave-absorbing heating sheet 3 according to the mass percentage for later use;

s2, firstly putting the methyl vinyl silicone rubber into an internal mixer for mixing for 3-5 minutes, then putting the white carbon black and the hydroxyl silicone oil into the internal mixer for mixing for 10 minutes, finally putting the acetylene black and the ferric oxide into the internal mixer for mixing for more than 10 minutes, observing mixing and uniformly pouring out; turning for 3-5 times by using an open mill, discharging, standing and cooling for 24-72 h for later use;

and S3, taking the mixed spare parts in the S2, adding an organic heat-resistant stabilizer and a bis-penta vulcanizing agent in proportion by using an open mill, mixing for more than 10-20 minutes, controlling the temperature of the rubber material to be lower than 80 ℃, taking samples, observing the surface uniformly, taking the samples out of the pieces, and cooling to obtain the wave-absorbing heating rubber material for later use.

S4, cleaning the container body 1, wiping the part needing to be bonded with alcohol, uniformly coating the part needing to be bonded with hot bonding glue on the container body 1, and drying and solidifying the hot bonding glue for later use by adopting a natural cooling mode or a heating and drying mode, wherein the hot bonding glue cannot be affected with damp;

s5, placing the wave-absorbing heating rubber material prepared in the S3 and the container coated with the hot-sticking glue in the S4 into a mould, and preparing the container 1 according to the size of the forming mould; heating at 170 ℃ for 300 seconds, and vulcanizing and molding under the pressure of 10-15 MPa;

s6, placing the formed container body 1 into an oven, and baking for 2-4 hours at the temperature of 180-200 ℃ for the second time to obtain the multifunctional cooking container for the microwave oven.

Examples 2 to 10 and comparative examples 1 to 2

The preparation methods of examples 2 to 10 and comparative examples 1 to 2 were the same as in example 1. The specific formula of the wave-absorbing heating sheet in the embodiments 1-10 and the comparative examples 1-2 is shown in table 1.

TABLE 1

The microwave absorbing heating sheet obtained in the embodiments 1-10 and the comparative examples 1-2 and the multifunctional cooking container for the microwave oven are subjected to related performance tests, and the experimental results are shown in table 2.

TABLE 2

It can be seen from the embodiment 1 and the comparative example 1 that the wave-absorbing heating sheet in the comparative example 1 is not added with the reinforcing agent, so that the wave-absorbing heating sheet has lower strength.

As can be seen from the embodiment 1 and the comparative example 2, the wave-absorbing heating sheet in the comparative example 2 is not added with an organic heat-resistant stabilizer, so that the high-temperature resistance of the wave-absorbing heating sheet is poor, and when the temperature of silica gel is increased to 250-300 ℃, the wave-absorbing heating sheet is easy to age and crack.

As can be seen from the embodiment 1 and the embodiments 4 to 5, the microwave absorbent is added in too much proportion, the microwave absorbing heating sheet has undesirable effect of absorbing microwaves, and the microwave absorbing heating sheet is easy to age and crack; the microwave absorbent is added too little, and the microwave absorbing heating sheet absorbs the microwave and the heating rate is too slow.

As can be seen from the embodiment 1 and the embodiments 6 to 7, the rate of absorbing the heat energy of microwave conversion by the wave-absorbing heating sheet is too high due to too much addition proportion of the inorganic heat stabilizer; the inorganic heat stabilizer is added in a too small proportion, and the wave-absorbing heating sheet has large temperature control fluctuation.

From the embodiment 1 and the embodiment 8, it can be seen that the modified fumed silica is used as a reinforcing agent, so that the heat resistance of the wave-absorbing heating sheet can be further improved.

It can be seen from examples 1 and 9 that the synergistic use of methyl vinyl silicone rubber and methyl phenyl vinyl silicone rubber can further improve the heat resistance of the wave-absorbing heat generating sheet because phenyl groups are introduced into the silicone rubber. In addition, the phenyl group introduced into the silicone rubber can also improve the low-temperature performance of the product.

It can be seen from examples 1 and 10 that the inorganic heat stabilizer is added with the mixed ferrite of nickel-zinc ferrite and iron trioxide and carbonyl iron powder, and compared with the case of only adding nickel-zinc ferrite and iron trioxide, the tensile strength of the wave-absorbing heating sheet can be further improved.

Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a multi-functional culinary art container for microwave oven which characterized in that, fits including vessel and lid the lid of vessel, the vessel with the lid sets up to the material that can shield microwave, the surface of vessel is provided with and inhales ripples the piece that generates heat, inhale ripples the piece that generates heat and include the following composition of mass percent: 30-60% of high-temperature vulcanized silicone rubber, 5-15% of microwave absorbent, 25-35% of inorganic heat stabilizer, 5-20% of reinforcing agent, 2-5% of structure control agent, 1-2% of crosslinking agent and 1-3% of organic heat-resistant stabilizer.

2. The multifunctional cooking vessel for microwave oven according to claim 1, wherein the wave-absorbing heat generating sheet is provided at the bottom of the vessel body.

3. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the inner surface of the container body is coated with a non-stick coating, and the lid body is opened with a pressure relief groove.

4. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the high temperature vulcanized silicone rubber includes at least one of methyl vinyl silicone rubber, methyl silicone rubber and methyl phenyl vinyl silicone rubber.

5. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the microwave absorbent includes at least one of acetylene black, ferrite and carbon nanotube.

6. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the inorganic heat stabilizer comprises at least one of mixed ferrite, carbonyl iron powder and silicon carbide.

7. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the reinforcing agent comprises modified precipitated silica or modified fumed silica.

8. The multifunctional cooking container for a microwave oven as claimed in claim 1, wherein the structure-controlling agent comprises at least one of hydroxyl silicone oil, methyl silicone oil and ethyl silicone oil.

9. The multifunctional cooking container for microwave oven as claimed in claim 1, wherein the cross-linking agent comprises peroxide curing agent and the organic heat-resistant stabilizer comprises rare earth nano material.

10. A method for manufacturing a multifunctional cooking container for a microwave oven according to any one of claims 1 to 9, comprising the operations of:

s4, cleaning the container, coating an adhesive, and drying for later use;