TWM643971U - The utilizing polyurea-type polyimide resin in reinforcing material structures - Google Patents

Abstract

This creation is a structure that uses polyurea-type polyimide resin to reinforce the material structure. It mainly uses polyurea-type polyimide resin, which is polymerized from three monomers: dianhydride, diisocyanate and diamine. A kind of resin is made to obtain a brown transparent polyurea-type polyimide resin with high viscosity. The thermal cracking temperature of the resin reaches above 500°C, and it can be prepared to form fiber composite materials with fiber materials, or to prepare surface coatings with metal materials. Or the film is pasted on the surface of the metal material to form a metal composite material, so that the creative product can obtain excellent heat resistance, mechanical properties, electrical properties and excellent chemical properties.

Description

Utilizing Polyurea-type Polyimide Resin in Reinforcing Material Structures

This work is about a method of using polyurea-type polyimide resin to reinforce the material structure, especially the impregnation process and metal material coating process or film lamination process of using polyurea-type polyimide resin as fiber cloth , so that this creative product can obtain excellent heat resistance, mechanical, electrical and chemical properties.

In recent years, some people have used traditional resin and charcoal fabric to make car brake covers. They are light and beautiful and installed on cars, but they will change color after half a year and then break down after a year. They fail because they are not resistant to heat and weather. The motorcycle exhaust pipe made of traditional resin and carbon cloth is very beautiful, but it will soon be soiled. Because the temperature of the motorcycle exhaust is about 220 ℃, the traditional resin is not heat-resistant and fails. The composite material made of resin used in this creation is used Because of its heat resistance, weather resistance, aging resistance, high mechanical properties, etc., no one has used polyimide to make fiber composite materials, especially the polyurea type polyimide resin in this creation has impact resistance and high toughness. Elasticity, strong resistance, lies in the development of carbon fiber composite materials instead of metal materials.

The main purpose of this creation is to propose a patent application for the use of polyurea-type polyimide resin in reinforcing material structures. Polyurea-type polyimide resin has the advantages of polyimide resin and urea resin. , Polyurea-type polyimide resin has good adhesion to fibers or metals, for example, polyurea resin/fiber composite materials or polyurea resin/metal composite materials are very useful.

This creation uses polyurea-type polyimide resin to apply to reinforced material structures, mainly polyurea-type polyimide resin as fiber cloth impregnation processing, or polyurea-type polyimide resin as metal material coating processing Or film lamination processing, in which polyurea type polyimide resin is a kind of resin made by polymerizing three monomers of dianhydride, diisocyanate and diamine, in which the surface of the fiber cloth is heat treated and then impregnated with polyurea Type polyimide resin liquid, and then heat and press to form a composite material board, especially fiber cloth impregnated with polyurea type polyimide resin liquid to obtain a three-dimensional fiber composite material, which is light in weight, high in strength, and shockproof. Moreover, the composite material board made of three-dimensional three-dimensional woven cloth has no disadvantage of delamination, because the fiber cloth of the three-dimensional structure has fiber reinforcement in the thickness direction of the cloth, and the fibers used for reinforcement include carbon fiber, glass fiber and aramid fiber, especially Carbon fiber composites can replace the metal plates of the car, which can reduce the weight of the car and be beautiful.

Prepare polyurea type polyimide resin liquid, or make it into a film by stretching, heating and pressing, which uses polyurea type polyimide resin liquid as the surface coating process of metal materials, or the polyurea type prepared above Type polyimide resin film is used as the surface lamination processing of metal materials, and can be applied to the protection of the metal surface of the iron frame of offshore wind power generation, so as to avoid the erosion of sea water and sea wind.

When prepared with fiber cloth as the impregnating material, or as the surface coating of the metal material or made into a film and pasted on the surface of the metal material, the creative product has the following characteristics:

1. This creative product has excellent heat resistance and high thermal stability, and can withstand high and low temperature thermal expansion and contraction.

2. This creative product has high toughness, elasticity, high wear resistance, scratch resistance, crack resistance and anti-aging characteristics.

3. This creative product has impact resistance, chemical resistance, weather resistance and radiation resistance.

4. This creative product has high mechanical properties and excellent electrical properties.

5. The polyurea polyimide resin film of this creation is laminated with metal materials to form a metal composite material through hot pressing. After testing, the tensile strength (Tensile Strength) is 85.15Mpa, and the elongation at break (Elongation to break) is 5.54%. , dielectric constant (Dielectric Costant) 2.81ε, dissipation factor (Dissipation factor) tax δ≦0.003, water absorption rate (Water absorption rate) 2.61%.

C: carbon fiber composite material

C1: weft fiber yarn

C2: warp fiber yarn

F: film

U1, U2, U3: Resin

M: metal composite

M1: metal plate

Figure 1 is the TGA curve of this creation using polyurea-type polyimide resin applied to the reinforced material structure.

Figure 2 is a diagram of the relationship between deformation and temperature under non-vibration loads using polyurea-type polyimide resin in this creation to reinforce the material structure.

Fig. 3 is a schematic diagram of the tensile fracture work of the carbon fiber composite material created by this paper under different structures of three-dimensional fabric composite materials.

Figure 4 is a schematic diagram of the flexural strength of the carbon fiber composite material created by this paper under different structures of the three-dimensional fabric composite material.

Figure 5 is a schematic diagram of the bending and fracture work of the carbon fiber composite material created by this paper under different structures of the three-dimensional fabric composite material.

Figure 6 is a schematic diagram of the shear strength of the carbon fiber composite material created for this paper under different structures of the three-dimensional fabric composite material.

Figure 7 is a schematic diagram of the bending of the carbon fiber composite material created for the present under the load-deflection curve of the three-dimensional fabric composite material of different structures.

Figure 8 is the curve of the flexural strength retention rate of the three-dimensional fabric composite material under the curve of Retention of flexural strength (%)-temperature (°C) at different temperatures for the carbon fiber composite material created by this paper.

Figure 9 is the peel strength (Peal strength (kgf/cm)) curve measured at different temperatures and different pressures for the polyurea-type polyimide resin film created by the author and the metal material laminated to form a metal composite material through hot pressing picture.

Figure 10 is a schematic diagram of the carbon fiber composite material that uses polyurea-type polyimide resin in this creation to reinforce the material structure.

Figure 11 is a schematic diagram of the metal material composite material that uses polyurea-type polyimide resin in this creation to reinforce the material structure.

This creation is a kind of polyurea-type polyimide resin applied to the reinforced material structure. It is a resin made of three monomers: dianhydride, diisocyanate and diamine. It is mainly used as a fiber cloth. Polyurea-type polyimide resin for impregnation processing, metal material coating processing or film lamination processing, in which the fiber arrangement direction and fiber spacing in the carbon fiber cloth will affect the properties of the carbon fiber-bonded resin combined into a composite material.

Please refer to the polyurea type polyimide resin shown in Figure 1 with high heat resistance, by the TGA curve obtained by thermogravimetric analysis (TGA) as shown in Figure 1, by the polyurea type polyimide resin shown in Figure 1 There is 10% thermogravimetric loss at about 500°C, and the maximum thermogravimetric loss is at 565.56°C, which shows that polyurea-type polyimide resin has good heat resistance.

Please refer to the relationship between deformation and temperature under non-vibration load as shown in Figure 2. The dimensional stability of the material can be shown from the measurement of the thermal expansion coefficient, because the difference between the thermal expansion coefficient of the material and the substrate is too large When it is large, cracking or fracture will occur at high temperature. As shown in Figure 2, it can be seen that the heat distortion temperature is Tg at 264.566°C, and its viscosity ranges from 0.83 to 0.91dl/g.

Composite materials are manufactured as follows:

(1), three-dimensional three-dimensional three-direction (x, y, z axis) and five directions (x, y, z, +45°x ¹ , -45°x ² axis), the weaving density is 5.0mm, 7.5mm Into four organizational structures, the size is 150mmx150mmx6mm.

(2) Place the fabric in a steel box filled with polyurea-type polyimide resin solution for impregnation.

(3) Put the fabric impregnated with polyurea-type polyimide resin into a vacuum oven, and heat until the solution is completely volatilized to form a carbon fiber composite material. As shown in FIG. 10, it is a carbon fiber composite material C, the weft fiber yarn C1 contains resin U1, and the warp fiber yarn C2 contains resin U2.

Among them, the following shows the fiber content test table of various fabric structures. From the table, the fiber content of various fabric structures is about 55% to 57%, which is roughly the same as the theoretically calculated fiber content:

In the embodiment, five specifications of carbon fiber (dimension-weaving density) are taken, 2D (2 dimension-0.0mm), 3D-5.0 (3 dimension-5mm), 5D-5.0 (5 dimension-5mm), 3D-7.5 (3 Dimension-7.5mm), 5D-7.5 (5 dimension-7.5mm) are woven into carbon fiber composite material (150mmx150mmx6mm).

As shown in Figure 3, the tensile work of fracture of carbon fiber composite materials under three-dimensional fabric composite materials of different structures shows the transverse coordinates-fabric structure, longitudinal coordinates-break work (Rupture(J)), and its fabric structure is 2D, 3D- 5.0, 5D-5.0, 3D-7.5, 5D-7.5, test results 2D-79J, (3D-5.0)-180J, (5D-5.0)-99J, (3D-7.5)-130J, (5D-7.5)- 50J.

As shown in Figure 4, the flexural strength of carbon fiber composites under different structures of three-dimensional fabric composites shows the transverse coordinates - fabric structure, longitudinal coordinates - flexural strength (Flexural strength (Mpa)), and its fabric structure is 2D, 3D-5.0 ,5D-5.0,3D-7.5,5D-7.5, test results 2D-300Mpa,(3D-5.0)-388Mpa,(5D-5.0)-358Mpa,(3D-7.5)-368Mpa,(5D-7.5)-285Mpa , the result is 3D>5D>2D.

As shown in Figure 5, the bending fracture work of carbon fiber composite materials under different structures of three-dimensional fabric composite materials shows the transverse coordinates-fabric structure, longitudinal coordinates-bending fracture work (Rupture(J)), and the fabric structure is 2D, 3D- 5.0, 5D-5.0, 3D-7.5, 5D-7.5, test results 2D-3J, (3D-5.0)-4.5J, (5D-5.0)-6J, (3D-7.5)-4J, (5D-7.5) -4.5J.

As shown in Figure 6, the shear strength of carbon fiber composites under different structures of three-dimensional fabric composites shows the transverse coordinates-fabric structure, longitudinal coordinates-shear strength (Shear strength (Mpa)), and its fabric structure is 2D, 3D -5.0,5D-5.0,3D-7.5,5D-7.5, test results 2D-38.8Mpa,(3D-5.0)-42.5Mpa,(5D-5.0)-35Mpa,(3D-7.5)-40Mpa,(5D- 7.5)-33.8Mpa.

As shown in Figure 7, the bending test of carbon fiber composite materials under the load-deformation (Deflection) curve of three-dimensional fabric composite materials of different structures shows the transverse coordinate-deformation, longitudinal coordinate-load (Load (kg), test results 2D carbon fiber composite fabric 150kg load-deformation 2.5mm, 3D carbon fiber composite fabric 165kg load-deformation 3.5mm, 5D carbon fiber composite fabric 138kg load-deformation 6mm, the result of load-deformation is 3D>2D>5D.

As shown in Figure 8, the flexural strength retention rate test of the carbon fiber composite material under the curve of the fiber fabric composite material at different temperatures (Retention of flexural strength (%))-temperature (°C), shows the transverse coordinate-temperature (°C ), longitudinal coordinates - Retention of flexural strength (%), the test results are ▲3D-5.0, ◇5D-5.0, ■3D-7.5, △5D-7.5 carbon fiber composite fabrics, at 200 ℃ ▲3D -5.0 carbon fiber composite material obtained 80%, ◇5D-5.0 carbon fiber composite 75% of the material, 79% of the 3D-7.5 carbon fiber composite material, 70% of the △5D-7.5 carbon fiber composite material, 78% of the ▲3D-5.0 carbon fiber composite material at 300°C, and 78% of the ◇5D-5.0 carbon fiber composite material 63%, ■3D-7.5 carbon fiber composite material obtains 70%, △5D-7.5 carbon fiber composite material obtains 60%, at 370°C ▲3D-5.0 carbon fiber composite material obtains 54%, ◇5D-5.0 carbon fiber composite material obtains 40% , 3D-7.5 carbon fiber composite material obtains 57%, △5D-7.5 carbon fiber composite material obtains 35%, at 450°C ▲3D-5.0 carbon fiber composite material obtains 33%, ◇5D-5.0 carbon fiber composite material obtains 28%, ■ 3D-7.5 carbon fiber composite materials get 30%, and △5D-7.5 carbon fiber composite materials get 25%.

Please refer to the peel strength (Peal strength (kgf/cm)) curve measured at different temperatures and different pressures as shown in Figure 9. Figure, ◆Pressure 40kgf/cm ² 245℃ peel strength 1.9kgf/cm, ■Pressure 50kgf/cm ² 245℃ peel strength 2.2kgf/cm, ▲Pressure 60kgf/cm ² 235℃ peel strength 2.65kgf/cm, □Pressure 70kgf /cm ² 235°C peel strength 2.5kgf/cm, with the same temperature and different pressure to show the peel strength.

This creation is a structure using polyurea-type polyimide resin to reinforce the material structure. As shown in FIG. 11, it is a metal composite material M-based resin U3 made of film F as a laminated metal plate M1.

This creation is a kind of use of polyurea type polyimide resin to strengthen the material structure, which has met the requirements of the patent, and now the patent application is filed in accordance with the law.

The above embodiments are examples to illustrate the implementation of this creation, and describe the technical characteristics of this creation, and are not used to limit the scope of protection of this creation. Any arrangements that can be easily accomplished by those who are familiar with this technology fall within the scope of this creation, and the protection scope of this creation should be subject to the scope of the attached patent application.

F: film

M: metal composite

M1: metal plate

U3: Resin

Claims (11)

A polyurea-type polyimide resin is applied to a reinforced material structure, wherein the reinforced material is a polyurea-type polyimide resin, and the reinforced material is applied to a carbon fiber composite material, and the weft fiber yarn of its fabric structure contains poly Urea-type polyimide resin, the warp fiber yarn contains polyurea-type polyimide resin, and the metal composite material is a reinforcing material made into a film as a laminated metal plate. As described in claim 1, the use of polyurea-type polyimide resins for reinforcing material structures, wherein the polyurea-type polyimide resins are composed of three monomers: dianhydride, diisocyanate and diamine A resin made of. As described in Claim 1, the use of polyurea-type polyimide resin for reinforcing material structures, wherein the fabric structure is woven into three dimensions and three directions are x, y, z axes, and five directions are x, y, z axes z, +45°x ¹ , -45°x ² axes. As described in claim 1, the polyurea-type polyimide resin is used in the reinforced material structure, wherein the heat-resistant temperature of the polyurea-type polyimide resin is above 500°C. As described in Claim 1, the polyurea-type polyimide resin is used in the reinforced material structure, wherein the heat distortion temperature of the polyurea-type polyimide resin is 200-300°C. As stated in claim 1, the polyurea-type polyimide resin is used in the reinforced material structure, wherein the polyurea-type polyimide resin has good heat resistance, and its viscosity ranges from 0.83 to 0.91dl/g. As described in claim 1, the polyurea-type polyimide resin is applied to the reinforced material structure, wherein the fiber content of the carbon fiber composite material is 55% to 57%. As described in claim 1, the use of polyurea-type polyimide resin to apply to the reinforced material structure, wherein the carbon fiber composite material has five specifications of carbon fibers, and its (dimension-weaving density) adopts 2D (2 dimensions -0.0mm), 3D-5.0(3 dimension-5mm), 5D-5.0(5 dimension-5mm), 3D-7.5(3 dimension-7.5mm), 5D-7.5(5 dimension-7.5mm). As described in Claim 1, the polyurea-type polyimide resin is used in the reinforced material structure, wherein the flexural strength of the prepared carbon fiber composite material is between 300 and 388Mpa. As stated in Claim 1, the polyurea-type polyimide resin is applied to the reinforced material structure, wherein the shear strength of the prepared carbon fiber composite material is between 35 and 42.5Mpa. As described in Claim 1, the polyurea-type polyimide resin is used in the reinforced material structure, wherein the peel strength of the metal composite material ranges from 1.9kgf/cm to 2.65kgf/cm.