Printed two-dimensional code will not be diluted by silicon carbide particle trap skin

Abstract

The application discloses a printed two-dimensional code silicon carbide particle trap outer skin which cannot be diluted. On the basis of a conventional silicon carbide outer skin material, 5-10 parts by weight of calcined kaolin with whiteness of 90% or above and 1-5 parts by weight of anatase titanium dioxide are added. According to the design scheme, the compactness of the outer skin is improved, the water absorption is reduced, the code reading rate reaches 100%, and the added components do not affect the performance of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of silicon carbide particle trap skin, in particular a kind of printed two-dimensional code is not diluted silicon carbide particle trap skin. BACKGROUND

[0002] Silicon carbide particle trap is by a plurality of silicon carbide square unit strip splicing after grinding, in the combination of the roughly circular outer again smearing a layer of mud, wherein the material of unit strip itself, we generally call it main body material, the material for splicing a plurality of unit strips, we generally call it splicing material, the material that is smeared in the combination of the roughly circular outer, we generally call it skin.

[0003] Based on the traceability of product, the particle trap is required to be sprayed with two-dimensional code at present, so that the factory information can be inquired by scanning two-dimensional code.

[0004] The skin material and splicing material and main body material material can refer to the invention patent of the company applied for a kind of wall flow type ceramic filter and its preparation method (publication number CN106380203B), including main body material, sealing material and splicing material, the main body material includes 50-95 parts of silicon carbide, 1-10 parts of pore-forming agent and 20-30 parts of water by weight fraction, the sealing material includes 10-60 parts of silicon carbide, 5-10 parts of methyl cellulose, 30-50 parts of silica sol and 20-30 parts of water by weight fraction, and the splicing material includes 20-85 parts of silicon carbide, 5-10 parts of methyl cellulose, 30-50 parts of silica sol and 20-30 parts of water by weight fraction;It also includes skin graft material, and the skin graft material includes 50-95 parts of silicon carbide, 1-10 parts of silica sol and 20-30 parts of water by weight fraction.

[0005] From the component ratio of the patent, the difference between the main body material, the sealing material, the splicing material and the skin graft material is very small.

[0006] Due to the physical properties of silicon carbide, the skin formed has a dark color, and due to the small difference in material, the porosity is large, the density of the skin is poor, the water absorption capacity is strong, so that the two-dimensional code sprayed after a period of time is easy to be absorbed and dispersed, the color becomes light, and the code reading rate after 3 days is generally less than 30%, causing the problem that the two-dimensional code is difficult to identify. SUMMARY

[0007] The purpose of the present application is to solve the problem that the density of the existing silicon carbide particle trap skin is low, resulting in strong water absorption, and the two-dimensional code will disperse and become light over time, resulting in poor traceability.

[0008] Technical scheme: the present application provides the following technical scheme:

[0009] A printed two-dimensional code will not be diluted by the silicon carbide particle trap skin, on the basis of the conventional silicon carbide skin material, 5-10 parts by weight of calcined kaolin with whiteness above 90% and 1-5 parts by weight of anatase titanium dioxide are added.

[0010] Further, the conventional silicon carbide skin material includes 60-80 parts by weight of silicon carbide, 5-8 parts by weight of silica sol and 20-25 parts by weight of water.

[0011] Further, the calcined kaolin and the anatase titanium dioxide are both powder materials.

[0012] Further, the calcined kaolin D50 = 2-8 μm.

[0013] Further, the anatase titanium dioxide D50 = 0.1-0.5 μm.

[0014] Beneficial effects: the present application relative to the prior art: using the design scheme of the present application,

[0015] The whiteness is required because the physical properties of silicon carbide itself cause the skin to be dark, so after the whiteness is required, the final skin product not only has stronger density, so that the two-dimensional code will not be diluted by moisture dispersion, but also the overall color of the skin is brighter, so that the contrast of the commonly used black two-dimensional code is higher, and the code reading rate is also higher. DETAILED DESCRIPTION

[0016] The present application will be further illustrated below in conjunction with specific embodiments, which should be understood to be used only to illustrate the present application and not to limit the scope of the present application, and those skilled in the art will make various modifications to the present application after reading the present application, which fall within the scope defined by the claims attached hereto.

[0017] Example 1

[0018] A printed two-dimensional code will not be diluted by the silicon carbide particle trap skin, on the basis of the conventional silicon carbide skin material, 5-10 parts by weight of calcined kaolin with whiteness above 90% and 1-5 parts by weight of anatase titanium dioxide are added.

[0019] The conventional silicon carbide skin material includes 60 parts by weight of silicon carbide, 5 parts by weight of silica sol and 20 parts by weight of water.

[0020] The calcined kaolin and the anatase titanium dioxide are both powder materials.

[0021] The calcined kaolin D50 = 2-8 μm.

[0022] The anatase titanium dioxide D50 = 0.1-0.5 μm.

[0023] Example 2

[0024] A printed two-dimensional code will not be diluted by the silicon carbide particle trap skin, on the basis of the conventional silicon carbide skin material, 7 parts by weight of calcined kaolin with a whiteness of 90% or more and 3 parts by weight of anatase titanium dioxide are added.

[0025] The conventional silicon carbide skin material includes 70 parts by weight of silicon carbide, 7 parts by weight of silica sol and 23 parts by weight of water.

[0026] The calcined kaolin and the anatase titanium dioxide are both powders.

[0027] The calcined kaolin D50 = 2-8 μm.

[0028] Further, the anatase titanium dioxide D50 = 0.1-0.5 μm.

[0029] Example 3

[0030] A printed two-dimensional code will not be diluted by the silicon carbide particle trap skin, on the basis of the conventional silicon carbide skin material, 10 parts by weight of calcined kaolin with a whiteness of 90% or more and 5 parts by weight of anatase titanium dioxide are added.

[0031] The conventional silicon carbide skin material includes 80 parts by weight of silicon carbide, 8 parts by weight of silica sol and 25 parts by weight of water.

[0032] The calcined kaolin and the anatase titanium dioxide are both powders.

[0033] The calcined kaolin D50 = 2-8 μm.

[0034] The anatase titanium dioxide D50 = 0.1-0.5 μm.

[0035] Comparative Example 4

[0036] The skin components and proportions disclosed in CN106380203B mentioned in the background art are used, and other main materials, splicing materials, etc. The same components and proportions are used in all examples and comparative examples.

[0037] Experimental results

[0038]

[0039] As shown in the experimental results of the above table, the two-dimensional code recognition rate of the comparative example is greatly affected over time because the composition of the outer skin is basically the same as that of the joint material and the main material, which is mainly silicon carbide, plus a binder, etc. However, the main body needs to maintain the porosity to form a wall-flow filter, but if the outer skin also maintains a high porosity, the printed two-dimensional code ink will be absorbed and diluted, causing the two-dimensional code color to fade. In addition, since the color of silicon carbide is relatively dark, the contrast with the commonly used black two-dimensional code is low, making the recognition rate lower. The technical solution of the present application can perfectly solve this problem as shown in the examples.

Claims

1. A printed two-dimensional code that is not captured by a dilution of silicon carbide particles skin, characterized by: On the basis of a conventional silicon carbide outer skin material, 5-10 parts by weight of calcined kaolin with a whiteness of 90% or more and 1-5 parts by weight of anatase titanium dioxide are added; the conventional silicon carbide outer skin material comprises 60-80 parts by weight of silicon carbide, 5-8 parts by weight of silica sol and 20-25 parts by weight of water.

2. The printed two-dimensional code that is not captured by the diluted silicon carbide particle trap skin according to claim 1, characterized by: Both the calcined kaolin and the anatase titanium dioxide are in the form of powder.

3. The printed two-dimensional code that is not captured by the diluted silicon carbide particle trap skin according to claim 2, characterized by: The calcined kaolin has a D50 of 2-8 microns.

4. The printed two-dimensional code that is not captured by the diluted silicon carbide particle trap skin according to claim 2, characterized by: The anatase titanium dioxide has a D50 of 0.1-0.5 microns.

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