CN-122008642-A - Ceramic glass composite part with strong shock resistance, preparation method thereof and electronic equipment

Abstract

The invention discloses a ceramic glass composite part with strong shock resistance, a preparation method thereof and electronic equipment, the ceramic material consists of a ceramic layer, a glass layer and an adhesive layer, wherein the bending strength is more than 1000MPa or/and the ball falling performance is not lower than 37cm or/and the point pressure value is not lower than 110N.

Inventors

• ZHANG FUJUN
• CHENG TINGTING
• DENG CHANGMENG

Assignees

• 常熟佳合显示科技有限公司

Dates

Publication Date

20260512

Application Date

20260123

Claims (6)

1. 1. A ceramic glass composite part with strong shock resistance is composed of a ceramic layer, a glass layer and an adhesive layer, and is characterized in that the thickness ratio of the ceramic layer to the glass layer is 0.4-1.4, the thickness of the adhesive layer accounts for 1-11.5% of the total thickness of the composite part, and the bending strength of the composite part is more than 1000MPa or/and the ball falling performance is not lower than 37cm or/and the point pressing value is not lower than 110N.
2. 2. A method for preparing a ceramic glass composite having strong impact resistance according to claim 1, comprising the steps of: Step 1, bonding the ceramic layer thickness and the glass layer according to the thickness ratio of 1.13-2.04 through a bonding layer to obtain an initial composite part, wherein the thickness of the bonding layer accounts for 0.8-8.10% of the total thickness of the composite part; Step 2, performing curing treatment on the initial composite piece obtained in the step 1, wherein the curing process is UV curing or/and thermal curing or/and hot pressing curing; And 3, thinning the composite member obtained in the step 2 to ensure that the thickness of the ceramic layer accounts for 27-56% of the total thickness of the composite member and the thickness ratio of the ceramic layer to the glass layer is 0.4-1.4, thereby obtaining a final product.
3. 3. The method for preparing a ceramic glass composite with strong impact resistance according to claim 2, wherein the preparation process of the adhesive layer in the step 1 is a slit coating process or a doctor blade coating process or a spot-gluing coating process.
4. 4. The method for preparing the ceramic glass composite with strong shock resistance according to claim 2, wherein the specific process of UV curing in the step 2 is that ultraviolet radiation with the wavelength of 320-390 nm is adopted, the irradiation intensity is 1000-4000 mJ/cm < 2 >, the irradiation time is 20-60 s, the curing temperature of hot press curing is 60-100 ℃, the curing pressure is 0.5-1.5 MPa, and the curing time is 1-24 h.
5. 5. The preparation method of the ceramic glass composite part with the strong shock resistance according to claim 2, wherein the specific process of the thinning treatment in the step 3 is that rough grinding is performed firstly and then fine grinding is performed, a diamond grinding wheel with 320-600 meshes is selected for rough grinding, the rotating speed of a main shaft is 3000-5000 rpm, the feeding speed is 5-10 mu m/s, the pressing force is 20-50N, the excessive thickness of a ceramic layer is removed, a resin bonding agent diamond grinding wheel with 2000-3000 meshes is selected for fine grinding, the rotating speed of the main shaft is 8000-12000 rpm, the feeding speed is 0.5-1 mu m/s, the pressing force is 5-15N, and the flatness of the outer surface of the ceramic layer is improved, so that the final roughness Ra of the outer surface of the ceramic is less than or equal to 0.01 mu m.
6. 6. An electronic device comprising the ceramic glass composite having strong impact resistance according to claim 1.

Description

Ceramic glass composite part with strong shock resistance, preparation method thereof and electronic equipment Technical Field The invention belongs to the field of new materials, and particularly relates to a ceramic glass composite part with strong shock resistance, a preparation method thereof and electronic equipment. Background With the rapid development of the smart phone industry, the performance requirements of consumers on the mobile phone backboard are increasingly improved, so that the mobile phone backboard is required to have better appearance, excellent mechanical strength, impact resistance and light weight. The current cell phone backboard materials on the market mainly comprise metal, glass, ceramic, composite materials and the like. The ceramic material has the advantages of high strength, high hardness, wear resistance and the like, but has the problems of high brittleness, poor impact resistance and high processing difficulty, the glass material has the advantages of high transparency, convenient processing, insufficient mechanical strength and easy fragmentation, and the single material is difficult to meet the strict requirements of the mobile phone backboard on comprehensive performance. In order to solve the above-mentioned problems, a composite structure of ceramic and glass has been developed in the related art, for example, patent publication CN208410950U discloses an impact-resistant housing material and a digital product housing. The anti-impact shell material comprises a surface layer and an energy absorption layer connected with the surface layer, wherein the surface layer is made of ceramic, microcrystalline glass or common glass, the energy absorption layer is made of a high-modulus material, the digital product shell comprises a surface layer and an energy absorption layer connected with the surface layer, the surface layer is made of ceramic, microcrystalline glass or common glass, and the energy absorption layer is made of a high-modulus material. According to the anti-impact shell material, the surface layer can provide a surface effect and a certain anti-impact capacity, the energy absorption layer is made of a high-modulus high-toughness material, so that impact energy can be absorbed, the surface layer is protected, and the anti-impact capacity of the whole structure is improved. The defects of poor laminating stability, insufficient control precision of the thickness of the adhesive layer, overlarge overall thickness after compounding and the like commonly exist in the existing composite structure, so that the impact resistance of a composite part is improved to a limited extent, and the use requirement of the mobile phone backboard cannot be fully met. Therefore, developing a ceramic glass composite member and a mobile phone back plate thereof, which have ultra-thin thickness and significantly improved impact resistance, is a technical problem to be solved in the current field. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a ceramic glass composite part with ultra-thin thickness and strong shock resistance, which has the following specific technical scheme: A ceramic glass composite part with strong shock resistance is composed of a ceramic layer, a glass layer and an adhesive layer, wherein the ceramic layer and the glass layer are adhered through the adhesive layer, the thickness of the ceramic glass composite part is 0.3-0.6mm, the bending strength is more than 1000MPa, or/and the ball falling performance is not lower than 37cm, or/and the point pressure value is not lower than 110N. In some embodiments, the ceramic glass composite has a thickness of 0.3mm or 0.31mm or 0.32mm or 0.33mm or 0.34mm or 0.35mm or 0.36mm or 0.37mm or 0.38mm or 0.39mm or 0.40mm or 0.41mm or 0.42mm or 0.43mm or 0.44mm or 0.45mm or 0.46mm or 0.47mm or 0.48mm or 0.49mm or 0.50mm or 0.51mm or 0.52mm or 0.53mm or 0.54mm or 0.55mm or 0.56mm or 0.57mm or 0.58mm or 0.59mm or 0.60mm or a value within a range of values defined by any 2 of the specific values recited above as endpoints; the flexural strength is 1000MPa or 1030MPa or 1050MPa or 1100MPa or 1130MPa or 1150MPa or a value within a range of values defined by any 2 of the above specified values as endpoints, the ball drop performance is 37cm or 38cm or 39cm or 40cm or 41cm or 42cm or 43cm or 44cm or 45cm or a value within a range of values defined by any 2 of the above specified values as endpoints, the point pressure is 110N or 115N or 120N or 125N or 130N or a value within a range of values defined by any 2 of the above specified values as endpoints, and further the Young's modulus is 380-420GPa, in some embodiments 380GPa or 390GPa or 395GPa or 400GPa or 405GPa or 410GPa or 415 or 420GPa or a value within a range of values defined by any 2 of the above specified values as endpoints. The ceramic layer has a thickness of 0.09mm to 0.30mm, in some embodiments, the ceramic layer has a th