阅读说明：本技术 一种石墨炊具的涂层压力渗涂工艺 (Coating pressure infiltration coating process of graphite cooker ) 是由 赵冬冬 于 2019-11-27 设计创作，主要内容包括：一种石墨炊具的涂层压力渗涂工艺,包括以下步骤：步骤一、将石墨炊具置入真空箱内真空保存25-35min；步骤二、向真空箱内注入涂层悬浮液,然后将真空箱内的压力调节至0.05-0.11MPa,保存50-70min；步骤三、真空箱泄压,将石墨炊具取出后置入固化炉内保存8-12min；步骤四、将石墨炊具从固化炉中取出,在室温下静置8-12h后,即完成石墨炊具的涂层渗涂。采用本发明所述的工艺涂覆在石墨炊具表面上的涂层,涂层可渗入石墨内部,涂层与石墨之间紧密结合,而并非涂层粘附结合在石墨的表面,不会出现石墨炊具表面涂层由于外力作用而脱落的问题。(A pressure infiltration coating process for a coating of a graphite cooker comprises the following steps: step one, placing the graphite cooker into a vacuum box for vacuum preservation for 25-35 min; injecting the coating suspension into a vacuum box, adjusting the pressure in the vacuum box to 0.05-0.11MPa, and storing for 50-70 min; step three, releasing pressure in a vacuum box, taking out the graphite cooker, and then placing the graphite cooker into a curing furnace for storage for 8-12 min; and step four, taking the graphite cooker out of the curing furnace, and standing for 8-12h at room temperature to finish the coating infiltration coating of the graphite cooker. The coating coated on the surface of the graphite cooker by adopting the process of the invention can permeate into the graphite, the coating and the graphite are tightly combined, but the coating is not adhered and combined on the surface of the graphite, and the problem that the coating on the surface of the graphite cooker falls off under the action of external force can not occur.)

1. A pressure infiltration coating process for a coating of a graphite cooker is characterized by comprising the following steps:

step one, placing the graphite cooker into a vacuum box for vacuum preservation for 25-35 min;

injecting the coating suspension into a vacuum box, adjusting the pressure in the vacuum box to 0.05-0.11MPa, and storing for 50-70 min;

step three, releasing pressure in a vacuum box, taking out the graphite cooker, and then placing the graphite cooker into a curing furnace for storage for 8-12 min;

and step four, taking the graphite cooker out of the curing furnace, and standing for 8-12h at room temperature to finish the coating infiltration coating of the graphite cooker.

2. The pressure infiltration coating process of graphite cookware, as claimed in claim 1, wherein: in the second step, the coating suspension is prepared from polytetrafluoroethylene, polyethylene glycol octyl phenyl ether and water according to the weight ratio of 12: the mass ratio of 1:7 is evenly mixed and blended.

3. The pressure infiltration coating process of graphite cookware, as claimed in claim 1, wherein: in the first step, the pressure in the vacuum box is-0.1 MPa.

4. The pressure infiltration coating process of graphite cookware, as claimed in claim 1, wherein: in the third step, the pressure in the curing furnace is 0.05-0.15MPa, and the temperature is 350-.

5. The pressure infiltration coating process of graphite cookware, as claimed in claim 1, wherein: in step two, the average particle size of the coating suspension is 5-20 microns.

6. The pressure infiltration coating process of graphite cookware, as claimed in claim 1, wherein: in step two, the coating suspension has a density of 1.3-1.4g/cm dry weight.

Technical Field

The invention relates to the technical field of graphite cookers, in particular to a coating pressure infiltration coating process of a graphite cooker.

Background

The graphite has high heat conduction, fast heat transfer, uniform heating and fuel saving, so that baking trays, pans and the like made of the graphite are fast to heat, the baked food is uniformly heated and cooked from inside to outside, the heating time is short, the taste is pure, and the original nutrients of the food can be locked. In addition, the graphite also has the characteristics of chemical stability, erosion resistance, health, environmental protection, no radioactive pollution, high temperature resistance and the like. Therefore, the method is particularly suitable for preparing cookers such as rice cookers, pressure cooker liners, baking tray panels, frying pans and the like. However, graphite cannot directly contact with food, and the graphite is required to be sprayed on the surface of graphite when being made into a cooker, and the surface of the existing graphite cooker is generally treated by adopting a traditional non-stick coating. However, the non-stick coating prepared on the graphite cookware has the defects of poor adhesion, low hardness and the like, and in cooking use, the coating on the surface of the site is usually stripped off due to contact with metal utensils or hard objects, so that the protection of the coating is lost on the site of the graphite cookware, and in order to protect the coating from damage, great care is needed in actual use to avoid damaging the coating, which is very inconvenient for users or consumers.

Disclosure of Invention

In order to solve the above problems, the present invention provides a coating pressure infiltration coating process for graphite cookware, which is a coating coated on the surface of graphite cookware, the coating can infiltrate into the graphite under pressure, the coating and the graphite are tightly combined, but the coating is not adhered and combined on the surface of the graphite, and the problem that the coating on the surface of the graphite cookware falls off due to the action of external force does not occur.

The technical scheme adopted by the invention to solve the problems is as follows: a pressure infiltration coating process for a coating of a graphite cooker comprises the following steps:

step one, placing the graphite cooker into a vacuum box for vacuum preservation for 25-35 min;

injecting the coating suspension into a vacuum box, adjusting the pressure in the vacuum box to 0.05-0.11MPa, and storing for 50-70 min;

step three, releasing pressure in a vacuum box, taking out the graphite cooker, and then placing the graphite cooker into a curing furnace for storage for 8-12 min;

and step four, taking the graphite cooker out of the curing furnace, and standing for 8-12h at room temperature to finish the coating infiltration coating of the graphite cooker.

In the present invention, preferably, in step two, the coating suspension is prepared from polytetrafluoroethylene, polyethylene glycol octylphenyl ether and water according to a ratio of 12: the mass ratio of 1:7 is evenly mixed and blended.

In the present invention, it is preferable that, in the first step, the pressure in the vacuum chamber is-0.1 MPa.

In the present invention, preferably, in the third step, the pressure in the curing furnace is 0.05-0.15MPa, and the temperature is 350-.

In the present invention, preferably, in the second step, the average particle size of the coating suspension is 5 to 20 μm.

In the present invention, preferably, in the second step, the density of the coating suspension is 1.3-1.4g/cm for thin film cultivation.

Compared with the prior art, the invention has the following beneficial effects:

the coating pressure infiltration coating process of the graphite cooker has the advantages that the coating coated on the surface of the graphite cooker by the process has extremely small particle size of the coating suspension liquid because the graphite material has certain porosity, under the conditions of vacuum and certain pressure and temperature, the coating suspension can gradually penetrate through the gaps of the graphite material and completely permeate into the graphite, so that the coating is tightly combined with the graphite to form a mixture of the coating and the graphite, but the coating is not adhered to the surface of the graphite by spraying, the problem that the coating on the surface of the graphite cooker falls off due to the action of external force can not occur, even if the surface of the graphite cooker is damaged and has pits, the surface of the pits is also graphite with the coating, and the graphite can be directly contacted with food materials, so that convenience is brought to users or consumers, and the trouble of colliding and damaging the coating of the graphite cooker is avoided.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the following examples, but the scope of the present invention is not limited thereto.