A kind of high-strength PETG plastic plate material not easy to damage

Abstract

The utility model relates to PETG plastic plate technical field, concretely disclose a kind of high-strength PETG plastic plate not easy to damage, including PETG plastic plate main part, the PETG plastic plate main part is by surface protective layer, PETG substrate layer and reinforcing fiber grid layer Composition, the reinforcing fiber grid layer is embedded in PETG substrate layer inside, and the fiber density of reinforcing fiber grid layer is 5-20 root / cm 2, the surface protective layer is compounded in the outer surface of PETG substrate layer, the surface protective layer is modified silicone wear-resistant coating, thickness is 10-50 μm.The utility model passes through the three-layer composite structure of PETG substrate layer, reinforcing fiber grid layer and surface protective layer, solve the weak impact resistance of traditional PETG plate due to single structure, surface is easy to scratch, the problem that whole is easy to brittle crack, reach synchronous promotion plate body strength, interface toughness and surface durability, realize the comprehensive protection effect of impact strength ≥22 kJ / m 2 (ISO 179), wear-resistant grade H level (GB / T 1768).

Description

Technical Field

[0001] This utility model relates to the technical field of PETG plastic sheets, specifically a high-strength PETG plastic sheet that is not easily damaged. Background Technology

[0002] PETG sheets can be sawed, die-cut, drilled, punched, sheared, riveted, milled, and cold-bent without breaking. Minor surface scratches can be removed with a heat gun. Solvent bonding is also standard practice. It is easier to process than general-purpose acrylic, impact-modified acrylic, or PC sheets and can undergo flocking, electroplating, and electrostatic treatments. PETG sheets are resistant to a variety of chemicals and common cleaning agents. The PETG sheet substrate is made of environmentally friendly materials, has FDA food certification, and meets food contact management requirements.

[0003] When used, PETG plastic sheets do not have protective functions, which makes them prone to cracking and surface scratches when used outdoors, such as in outdoor advertising and protective face shields. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-strength, durable PETG plastic sheet that offers protection for PETG plastic sheets, thus solving the problem of PETG plastic sheets lacking protective functions.

[0005] This invention relates to a high-strength, durable PETG plastic sheet, comprising a PETG plastic sheet body. The PETG plastic sheet body is composed of a surface protective layer, a PETG substrate layer, and a reinforcing fiber mesh layer. The reinforcing fiber mesh layer is embedded inside the PETG substrate layer, and the fiber density of the reinforcing fiber mesh layer is 5-20 fibers / cm². The surface protective layer is composited on the outer surface of the PETG substrate layer and is a modified silicone wear-resistant coating with a thickness of 10-50μm. This invention solves the problems of weak impact resistance, easy surface scratches, and overall brittleness caused by the single structure of traditional PETG sheets through a three-layer composite structure of the PETG substrate layer, the reinforcing fiber mesh layer, and the surface protective layer. It simultaneously improves the strength of the sheet body, the toughness of the interface, and the surface durability, achieving a comprehensive protective effect with an impact strength ≥22 kJ / m² (ISO 179) and an wear resistance grade of H (GB / T1768).

[0006] This invention relates to a high-strength, durable PETG plastic sheet. The reinforcing fiber mesh layer is made of glass fiber or carbon fiber with a single filament diameter of 0.05-0.2 mm. The mesh nodes are bonded to the PETG substrate layer by hot-pressing and melting. By limiting the reinforcing fiber mesh layer to glass fiber or carbon fiber with a single filament diameter of 0.05-0.2 mm, this invention solves the problem of interlayer delamination caused by insufficient interfacial bonding between the fiber and the PETG substrate, achieving a tensile strength increase of over 40% (ASTM D638) and an impact toughness retention rate of >90%.

[0007] This invention relates to a high-strength, durable PETG plastic sheet, wherein the reinforcing fiber mesh layer is a bidirectional orthogonal weaving structure with an angle of 90°±5° between the warp and weft fibers. By adopting a bidirectional orthogonal weaving structure (warp / weft fiber angle 90°±5°), the anisotropic mechanical defects caused by unidirectional fiber reinforcement are solved, achieving the effect of ≤5% deviation of bending strength in the longitudinal and transverse directions of the sheet (ISO 178) and improved uniformity of deformation resistance.

[0008] This invention relates to a high-strength, durable PETG plastic sheet, wherein the surface protective layer contains nano-silica particles with a particle size of 20-100nm, and the nano-silica accounts for 5%-15% of the mass of the protective layer. By adding 20-100nm nano-silica particles (accounting for 5%-15%) to the surface protective layer, the problem of surface scratches caused by insufficient hardness of pure organosilicon coating is solved, achieving a 3-fold increase in abrasion resistance (Taber test) and maintaining light transmittance ≥88% (ASTM D1003).

[0009] This invention relates to a high-strength, durable PETG plastic sheet, wherein a toughening agent is added to the PETG substrate layer. The toughening agent is methyl methacrylate-butadiene-styrene copolymer (MBS), and the addition amount is 3%-8% of the PETG substrate mass. By adding 3%-8% MBS toughening agent to the PETG substrate layer, the risk of brittle fracture of PETG molecular chains under low temperature conditions is solved, achieving a notched impact strength of ≥25kJ / m² (GB / T 1843) at -20℃ and maintaining a heat distortion temperature of above 80℃.

[0010] This invention relates to a high-strength, durable PETG plastic sheet. The total thickness of the PETG plastic sheet body is 2-10 mm, with the PETG substrate layer accounting for 85%-92% of the total thickness, the reinforcing fiber mesh layer accounting for 5%-10% of the total thickness, and the surface protective layer accounting for 0.5%-3% of the total thickness. By using the PETG plastic sheet body thickness ratio of 85%-92%: 5%-10%: 0.5%-3%, the problem of increased weight and cost waste caused by excessive thickness is solved, achieving the effect of lightweight and high strength with a sheet density ≤1.35g / cm³ (GB / T1033) and a flexural modulus ≥2500MPa.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model solves the problems of weak impact resistance, easy surface scratches, and overall brittleness caused by the simple structure of traditional PETG sheets by using a three-layer composite structure of PETG substrate layer, reinforcing fiber mesh layer and surface protective layer. It achieves the comprehensive protective effect of simultaneously improving the strength of the sheet body, interface toughness and surface durability, with an impact strength ≥22 kJ / m² (ISO 179) and a wear resistance grade of H (GB / T 1768).

[0012] 2. This utility model solves the problem of interlayer delamination caused by insufficient interfacial bonding between the fiber and the PETG substrate by limiting the material of the reinforcing fiber mesh layer to glass fiber or carbon fiber, and the single filament diameter to 0.05-0.2mm, thereby achieving an increase in tensile strength of more than 40% (ASTM D638) and an impact toughness retention rate of >90%. By adopting a two-way orthogonal weaving structure (warp / weft fiber angle 90°±5°), the anisotropic mechanical defects caused by unidirectional fiber reinforcement are solved, achieving the effect of ≤5% deviation of bending strength in the longitudinal and transverse directions of the board (ISO 178) and improved uniformity of deformation resistance. By adding 20-100nm nano silica particles (5%-15%) to the surface protective layer, the problem of surface scratches caused by insufficient hardness of pure organosilicon coating is solved, achieving a 3-fold increase in abrasion resistance (Taber test) and maintaining light transmittance ≥88% (ASTM D1003). By adding 3%-8% MBS toughening agent to the PETG substrate layer, the risk of brittle fracture of PETG molecular chains under low temperature environment is solved, achieving a notched impact strength of ≥25kJ / m² at -20℃ (GB / T 1843) and maintaining a heat distortion temperature of above 80℃. By using PETG plastic sheets with a thickness ratio of 85%-92%: 5%-10%: 0.5%-3%, the problem of increased weight and cost waste caused by excessive thickness is solved, achieving the effect of lightweight and high strength with a sheet density ≤1.35g / cm³ (GB / T 1033) and a flexural modulus ≥2500MPa. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the main structure of the PETG plastic sheet of this utility model; Figure 3 This is a schematic diagram of the reinforced fiber mesh layer structure of this utility model.

[0014] In the diagram: 1. PETG plastic sheet body; 101. Surface protective layer; 102. PETG substrate layer; 103. Reinforcing fiber mesh layer. Detailed Implementation

[0015] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0016] Please see Figure 1-3This invention relates to a high-strength, durable PETG plastic sheet, comprising a PETG plastic sheet body 1. The PETG plastic sheet body 1 is composed of a surface protective layer 101, a PETG substrate layer 102, and a reinforcing fiber mesh layer 103. The reinforcing fiber mesh layer 103 is embedded inside the PETG substrate layer 102, and the fiber density of the reinforcing fiber mesh layer 103 is 5-20 fibers / cm². The surface protective layer 101 is composited on the outer surface of the PETG substrate layer 102 and is a modified silicone wear-resistant coating with a thickness of 10-50μm. This invention solves the problems of weak impact resistance, easy surface scratches, and overall brittleness caused by the single structure of traditional PETG sheets through the three-layer composite structure of the PETG substrate layer 102, the reinforcing fiber mesh layer 103, and the surface protective layer 101. It simultaneously improves the strength of the sheet body, the toughness of the interface, and the surface durability, achieving a comprehensive protective effect with an impact strength ≥22 kJ / m² (ISO 179) and an wear resistance grade of H (GB / T 1768).

[0017] The reinforcing fiber mesh layer 103 is made of glass fiber or carbon fiber, with a single filament diameter of 0.05-0.2 mm. The mesh nodes are bonded to the PETG substrate layer 102 by hot pressing and melting. By limiting the material of the reinforcing fiber mesh layer 103 to glass fiber or carbon fiber and the single filament diameter to 0.05-0.2 mm, this invention solves the problem of interlayer delamination caused by insufficient interfacial bonding between the fiber and the PETG substrate, achieving an increase in tensile strength of more than 40% (ASTM D638) and an impact toughness retention rate of >90%.

[0018] The reinforcing fiber mesh layer 103 is a two-way orthogonal weaving structure with an angle of 90°±5° between the warp and weft fibers. By adopting a two-way orthogonal weaving structure (warp / weft fiber angle 90°±5°), the anisotropic mechanical defects caused by unidirectional fiber reinforcement are solved, achieving the effect of improving the bending strength deviation of the board in the longitudinal and transverse directions by ≤5% (ISO 178) and the uniformity of deformation resistance.

[0019] The surface protective layer 101 contains nano-silica particles with a particle size of 20-100nm, and the nano-silica accounts for 5%-15% of the mass of the protective layer. By adding 20-100nm nano-silica particles (accounting for 5%-15%) to the surface protective layer 101, the problem of surface scratches caused by insufficient hardness of pure organosilicon coating is solved, achieving a 3-fold increase in wear resistance (Taber test) and maintaining a light transmittance of ≥88% (ASTM D1003).

[0020] A toughening agent is added to the PETG substrate layer 102. The toughening agent is methyl methacrylate-butadiene-styrene copolymer (MBS). The amount added is 3%-8% of the mass of the PETG substrate. By adding 3%-8% MBS toughening agent to the PETG substrate layer 102, the risk of brittle fracture of PETG molecular chains under low temperature environment is solved, and the effect of low temperature notched impact strength ≥25kJ / m² (GB / T1843) at -20℃ and heat distortion temperature maintained above 80℃ is achieved.

[0021] The total thickness of the PETG plastic sheet body 1 is 2-10mm, of which the PETG substrate layer 102 accounts for 85%-92% of the total thickness, the reinforcing fiber mesh layer 103 accounts for 5%-10% of the total thickness, and the surface protective layer 101 accounts for 0.5%-3% of the total thickness. By using the thickness ratio of 85%-92%: 5%-10%: 0.5%-3% for the PETG plastic sheet body 1, the problem of increased weight and cost waste caused by excessive thickness is solved, achieving the effect of lightweight and high strength with a sheet density ≤1.35g / cm³ (GB / T 1033) and a flexural modulus ≥2500MPa.

[0022] When using this utility model: the three-layer composite structure of PETG substrate layer 102, reinforcing fiber mesh layer 103 and surface protective layer 101 solves the problems of weak impact resistance, easy surface scratches and easy overall brittleness caused by the single structure of traditional PETG sheets. It simultaneously improves the strength of the sheet body, interface toughness and surface durability, and achieves a comprehensive protective effect with impact strength ≥22 kJ / m² (ISO 179) and abrasion resistance grade H (GB / T 1768).

[0023] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A high-strength, durable PETG plastic sheet, comprising a PETG plastic sheet body (1), characterized in that: The PETG plastic sheet body (1) is composed of a surface protective layer (101), a PETG substrate layer (102) and a reinforcing fiber mesh layer (103). The reinforcing fiber mesh layer (103) is embedded inside the PETG substrate layer (102), and the fiber density of the reinforcing fiber mesh layer (103) is 5-20 fibers / cm². The surface protective layer (101) is composited on the outer surface of the PETG substrate layer (102). The surface protective layer (101) is a modified silicone wear-resistant coating with a thickness of 10-50μm.

2. The high-strength, damage-resistant PETG plastic sheeting of claim 1, wherein: The reinforcing fiber mesh layer (103) is made of glass fiber or carbon fiber, with a single filament diameter of 0.05-0.2 mm. The mesh nodes are bonded to the PETG substrate layer (102) by hot pressing and melting.

3. The high-strength, non-breakable PETG plastic sheet according to claim 1, characterized in that: The reinforcing fiber mesh layer (103) is a bidirectional orthogonal weave structure, with the angle between the warp fibers and the weft fibers being 90°±5.

4. The high-strength, damage-resistant PETG plastic sheeting of claim 1, wherein: The surface protective layer (101) contains nano-silica particles with a particle size of 20-100nm, and the nano-silica accounts for 5%-15% of the mass of the protective layer.

5. The high-strength, damage-resistant PETG plastic sheeting of claim 1, wherein: The total thickness of the PETG plastic sheet body (1) is 2-10mm, wherein the PETG substrate layer (102) accounts for 85%-92% of the total thickness, the reinforcing fiber mesh layer (103) accounts for 5%-10% of the total thickness, and the surface protective layer (101) accounts for 0.5%-3% of the total thickness.

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