Carbon fiber reinforced resin-based composite material and coating material for scratch-resistant super-crystal decorative plate

Abstract

The invention relates to a carbon fiber reinforced resin-based composite material and a coating material for a scratch-resistant super-crystal decorative plate, in particular to a carbon fiber reinforced resin-based composite material which is characterized by being prepared by the following steps: ultrasonically mixing 30-50 parts by weight of epoxy resin, 5-15 parts by weight of polyvinyl chloride resin and 10-20 parts by weight of carbon fiber treated by concentrated nitric acid; and after vacuum drying, curing. The carbon fiber reinforced resin-based composite material is used for preparing a coating material for a scratch-resistant super-crystal decorative plate, and the coating material for the scratch-resistant super-crystal decorative plate is characterized by comprising the following components in parts by weight: 25-35 parts of the carbon fiber reinforced resin-based composite material in claim 1, 5-10 parts of a diluent, 1-3 parts of a dispersing agent and 1-3 parts of a defoaming agent. 3-8 parts of nano aluminum oxide and 15-25 parts of ethanol.

Description

Technical Field

[0001] The invention belongs to the technical field of coating materials, and in particular relates to a coating material for a carbon fiber reinforced resin-based composite material and a scratch-resistant supercrystalline decorative plate. Background Art

[0002] Carbon fiber reinforced resin-based composite materials have the characteristics of high strength, strong toughness, light weight and fatigue resistance. They have broad application prospects in many fields and are used for structural materials and high temperature and corrosion resistant materials.

[0003] In the prior art, carbon fiber reinforced resin-based composite materials have been studied. For example, CN118791760A discloses a preparation process of a carbon fiber reinforced resin-based composite material, which includes the following raw materials by weight: 15-30 parts of resin matrix, 1-3 parts of curing agent, 60-80 parts of carbon fiber preform, and 0.2-0.4 parts of reinforcement; the reinforcement includes 35%-50% of alkaline-treated plant fiber fabric, 25%-35% of modified carbon nanotube film, and 25%-30% of inorganic nanofiller. The method described in the patent improves the tensile properties of the composite material by epoxidation modification of the carbon nanotube film, but does not improve its scratch resistance. Therefore, it is necessary to develop a new carbon fiber reinforced resin-based composite material coating for supercrystalline decorative panels. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a carbon fiber reinforced resin-based composite material and a coating material for a scratch-resistant supercrystalline decorative plate.

[0005] To achieve the purpose of the present invention, on the one hand, the present invention provides a carbon fiber reinforced resin-based composite material, which is prepared by ultrasonically mixing 30-50 parts by weight of epoxy resin, 5-15 parts by weight of polyvinyl chloride resin and 10-20 parts by weight of carbon fiber treated with concentrated nitric acid, vacuum drying, and curing.

[0006] Preferably, the curing temperature program is maintained at 20°C for 2 hours, maintained at 90°C for 2 hours, and maintained at 110°C for 6 hours.

[0007] In some embodiments, the present invention provides a carbon fiber reinforced resin-based composite material, which is ultrasonically mixed with 40 parts by weight of epoxy resin, 10 parts of polyvinyl chloride resin and 15 parts by weight of carbon fiber treated with concentrated nitric acid, vacuum dried, cured, demolded and crushed, and the curing temperature program is maintained at 20°C for 2 hours, 90°C for 2 hours, 110°C for 6 hours, and naturally cooled to 60°C.

[0008] In some embodiments, the present invention provides a coating material for scratch-resistant ultra-crystal decorative panels, characterized in that, in parts by weight, it includes: 25-35 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 5-10 parts of diluent, 1-3 parts of dispersant, 1-3 parts of defoaming agent, 3-8 parts of nano alumina, and 15-25 parts of ethanol.

[0009] In some embodiments, the present invention provides a coating material for scratch-resistant ultra-crystal decorative panels, characterized in that, in parts by weight, it includes: 25-35 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 5-10 parts of diluent, 1-3 parts of dispersant, 1-3 parts of defoaming agent, 3-8 parts of nano alumina, and 15-25 parts of ethanol.

[0010] In some preferred embodiments, the present invention provides a coating material for scratch-resistant ultra-crystal decorative panels, characterized in that, in parts by weight, it comprises: 30 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 8 parts of diluent, 2 parts of dispersant, 2 parts of defoaming agent, 5 parts of nano-alumina, and 20 parts of ethanol.

[0011] In some preferred embodiments, the diluent described in the present invention is butyl acetate.

[0012] In some preferred embodiments, the dispersant described in the present invention is polyethylene.

[0013] In some preferred embodiments, the defoamer described in the present invention is BYK-066N defoamer.

[0014] The present invention also provides a method for preparing a coating material for a scratch-resistant supercrystalline decorative plate, comprising: 1) Add 30-50 parts by weight of epoxy resin and 5-15 parts of polyvinyl chloride resin to acetone, stir evenly, add 10-20 parts by weight of carbon fiber soaked in concentrated nitric acid for 12 hours and washed with deionized water, stir evenly, maintain for 1 hour under ultrasonic conditions, vacuum dry, add the mixture into a mold, blow dry, maintain at 15-25°C for 2 hours, maintain at 85-95°C for 1-3 hours, maintain at 100-120°C for 5-6 hours, cool naturally to 50-70°C, demould, and crush to obtain a carbon fiber reinforced resin-based composite material; 2) Weigh 25-35 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 5-10 parts of diluent, 1-3 parts of dispersant, 1-3 parts of defoaming agent, 3-8 parts of nano-alumina, and 15-25 parts of ethanol, add them into a blender for mixing and stirring at a speed of 300-500 r / min for 40-60 min. After the stirring is completed, a coating material for scratch-resistant ultra-crystal decorative panels is obtained.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The inventors of the present invention have found that the carbon fiber reinforced resin-based composite material of the present invention is prepared by modifying epoxy resin and polyvinyl chloride resin with carbon fiber, which improves the adhesion of the coating material and has good scratch resistance. DETAILED DESCRIPTION

[0016] The following representative examples are intended to better illustrate the present invention, but are not intended to limit the scope of the present invention. Unless otherwise specified, the materials used in the following examples were commercially available.

[0017] Sources of some raw materials: Epoxy resin was purchased from Shanghai MacLean Biochemical Technology Co., Ltd.

[0018] The above raw material manufacturer models are only specifically selected to support the raw materials in the embodiments and are adopted in the experiments. In the actual production and preparation process, the sources of raw materials are not limited to the above manufacturer models.

[0019] Preparation of carbon fiber reinforced resin-based composite materials: Add 40 parts of epoxy resin and 10 parts of polyvinyl chloride resin to acetone, stir evenly, add 15 parts of carbon fiber that has been soaked in concentrated nitric acid for 12 hours and washed with deionized water, stir evenly, maintain for 1 hour under ultrasonic conditions, after vacuum drying, add the mixture into the mold, blow dry, maintain at 20°C for 2 hours, maintain at 90°C for 2 hours, maintain at 110°C for 6 hours, naturally cool to 60°C, demold, and crush to obtain a carbon fiber reinforced resin-based composite material.

[0020] Embodiment 1: A coating material for scratch-resistant supercrystalline decorative panels, characterized in that it comprises, in parts by weight: 30 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 8 parts of diluent, 2 parts of dispersant, 2 parts of defoaming agent, 5 parts of nano-alumina, and 20 parts of ethanol. After weighing the above components, add them into a blender for mixing and stirring at a speed of 400r / min and a stirring time of 60min. After the stirring is completed, the coating material for scratch-resistant supercrystalline decorative panels is obtained.

[0021] Embodiment 2: A coating material for scratch-resistant supercrystalline decorative panels, characterized in that it comprises, in parts by weight: 20 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 10 parts of diluent, 2 parts of dispersant, 2 parts of defoaming agent, 5 parts of nano-alumina, and 20 parts of ethanol. After weighing the above components, add them into a blender for mixing and stirring at a speed of 400r / min and a stirring time of 50min. After the stirring is completed, the coating material for scratch-resistant supercrystalline decorative panels is obtained.

[0022] Example 3: A coating material for scratch-resistant supercrystalline decorative panels, characterized in that it includes, in parts by weight: 35 parts of the above-mentioned carbon fiber reinforced resin-based composite material, 6 parts of diluent, 2 parts of dispersant, 2 parts of defoaming agent, 5 parts of nano-alumina, and 20 parts of ethanol. After weighing the above components, add them into a blender for mixing and stirring at a speed of 400r / min and a stirring time of 50min. After the stirring is completed, the coating material for scratch-resistant supercrystalline decorative panels is obtained.

[0023] Comparative Example 1: A coating material for a scratch-resistant ultra-crystal decorative panel, which is similar to Example 1, except that 30 parts of epoxy resin are used instead of the carbon fiber reinforced resin-based composite material, and nano-aluminum oxide is not used.

[0024] Experimental Example Performance Test: The scratch-resistant super-crystal decorative plate coating materials prepared in Examples 1 to 3 and Comparative Example 1 were subjected to performance tests. 1) Adhesion was measured according to GB / T5219-2006. 2) The coating was rubbed 30 times at the same speed with 0000# steel wool loaded with 200g weight, and then the wear of the surface was observed. The grades were divided into no scratches, basically no scratches, slight scratches, and severe scratches. The statistical results are shown in the following table: Table 1 Performance test results Example 1 Example 2 Example 3 Comparative Example 1 Adhesion (MPa) 23.5 22.9 22.1 17.1 Scratches Almost no scratches Almost no scratches Almost no scratches Severe scratches Therefore, compared with the comparative example, the coating material for the scratch-resistant supercrystal decorative plate of the present invention has better adhesion and is more scratch-resistant.

[0025] Although the present invention has been described in detail above, it is understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention. The invention is not restricted by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and shall be included in the protection scope of the present invention.

Claims

1. A carbon fiber reinforced resin-based composite material, characterized in that: The invention is prepared by ultrasonically mixing 30-50 parts by weight of epoxy resin, 5-15 parts by weight of polyvinyl chloride resin and 10-20 parts by weight of carbon fiber treated with concentrated nitric acid, vacuum drying and curing.

2. A carbon fiber reinforced resin-based composite material according to claim 1, characterized in that: The curing temperature program is to maintain at 20°C for 2 hours, maintain at 90°C for 2 hours, and maintain at 110°C for 6 hours.

3. The carbon fiber reinforced resin-based composite material according to claim 1, characterized in that: The method is prepared by ultrasonically mixing 40 parts by weight of epoxy resin, 10 parts of polyvinyl chloride resin and 15 parts by weight of carbon fiber treated with concentrated nitric acid, vacuum drying, curing, demoulding and crushing. The curing temperature program is maintained at 20°C for 2 hours, 90°C for 2 hours, 110°C for 6 hours, and naturally cooling to 60°C.

4. A coating material for scratch-resistant ultra-crystal decorative panels, characterized in that: Calculated by weight, it comprises: 25-35 parts of the carbon fiber reinforced resin-based composite material according to claim 1, 5-10 parts of a diluent, 1-3 parts of a dispersant, 1-3 parts of a defoaming agent, 3-8 parts of nano-alumina, and 15-25 parts of ethanol.

5. The coating material for scratch-resistant ultracrystal decorative panels according to claim 4, characterized in that: Calculated by weight, it comprises: 25-35 parts of the carbon fiber reinforced resin-based composite material according to claim 1, 5-10 parts of a diluent, 1-3 parts of a dispersant, 1-3 parts of a defoaming agent, 3-8 parts of nano-alumina, and 15-25 parts of ethanol.

6. The coating material for scratch-resistant ultracrystal decorative panels according to claim 4, characterized in that: The invention comprises 30 parts of the carbon fiber reinforced resin-based composite material according to claim 1, 8 parts of a diluent, 2 parts of a dispersant, 2 parts of a defoaming agent, 5 parts of nano-alumina and 20 parts of ethanol.

7. The coating material for scratch-resistant ultracrystal decorative panels according to claim 4, characterized in that: The diluent is butyl acetate.

8. The coating material for scratch-resistant ultra-crystal decorative panels according to claim 4, characterized in that: The dispersant is polyethylene.

9. The coating material for scratch-resistant ultracrystal decorative panels according to claim 4, characterized in that: The defoamer is BYK-066N defoamer.

10. The method for preparing the coating material for the scratch-resistant ultra-crystal decorative plate according to claim 4, comprising: 1) Add 30-50 parts by weight of epoxy resin and 5-15 parts of polyvinyl chloride resin to acetone, stir evenly, add 10-20 parts by weight of carbon fiber soaked in concentrated nitric acid for 12 hours and washed with deionized water, stir evenly, maintain for 1 hour under ultrasonic conditions, vacuum dry, add the mixture into a mold, blow dry, maintain at 15-25°C for 2 hours, maintain at 85-95°C for 1-3 hours, maintain at 100-120°C for 5-6 hours, cool naturally to 50-70°C, demould, and crush to obtain a carbon fiber reinforced resin-based composite material; 2) Weigh 25-35 parts of the carbon fiber reinforced resin-based composite material prepared in step 1), 5-10 parts of a diluent, 1-3 parts of a dispersant, 1-3 parts of a defoaming agent, 3-8 parts of nano-alumina, and 15-25 parts of ethanol, and add them into a blender for mixing and stirring at a speed of 300-500 r / min for 40-60 min. After the stirring is completed, a coating material for a scratch-resistant ultra-crystal decorative panel is obtained.