Production method of low-energy-consumption aluminum alloy fire-resistant door and window profile
By using a strip-through combination of hot melt adhesive and carbon aerogel polyurea foaming mixture in aluminum alloy window profiles, a firm connection is formed to form a solid connection, and the heat transfer of traditional thermally insulated aluminum alloy window profiles is solved. High coefficient and leakage problems improve thermal insulation performance and connection strength.
Patent Information
- Application Number
- CN202411166165.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2024-12-17
AI Technical Summary
The heat transfer coefficient of traditional thermal insulation aluminum alloy window profiles is high, resulting in large heat transfer losses of heat convection, and problems such as stress, slip misalignment, and shedding, making it difficult to meet the requirements of low energy consumption.
Use a cross-bar-combined hot melt adhesive and carbon aerogel polyurea foaming mixture to combine with glass fiber reinforced polyamide pultruded profiles to form a firm connection through serrated toothed trajectory and rolling to fill the carbon aerogel polyurea foaming mixture In the cavity of glass fiber reinforced polyamide pultruded profile, improve connection strength and thermal insulation performance.
It significantly improves the connection strength and thermal insulation sealing performance of thermally insulated aluminum alloy profiles, reduces heat transmission, solves the leakage problem of traditional products, and improves overall performance.
Smart Images
Figure CN119141933A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aluminum alloy profiles, and in particular relates to a production method of a low-energy consumption aluminum alloy fire-resistant door and window profile. Background Art
[0002] The exterior windows of buildings are mainly composed of two parts: profiles and glass. In order to improve the thermal insulation performance of the exterior windows of buildings, it is key to reduce the heat transfer coefficient of profiles and glass. CN201510394611.3 discloses a new energy-saving and environmentally friendly door and window profile, which is a composite door and window profile composed of plastic material PVC as an attachment hook and buckle connection. Since its introduction into my country in the 1970s, aluminum alloy doors and windows have entered the era of heat insulation, but the heat transfer coefficient of traditional heat-insulating aluminum alloy windows is relatively high and cannot meet the energy-saving requirements of 65%. Aluminum alloy window profiles only account for 17% to 35% of the entire window area, but the heat transfer coefficient is 2 to 4 times that of glass, and the heat lost through the profile accounts for nearly 50% of the heat loss of the entire window. Due to the advantages of aluminum alloy profiles such as light weight, high strength, strong corrosion resistance, and good plasticity, it can effectively prevent fire and moisture, so it is widely used in the production of doors and windows. However, as one of the main lighting parts of a building, doors and windows are key components of aluminum alloy profiles, and there are certain problems. There is still room for further reduction in the heat transfer coefficient of insulating aluminum alloy window profiles. Currently, the most widely used is the strip-type insulating aluminum alloy profile. The traditional insulation strips are relatively simple, and there are large gaps between each insulation strip, and the gaps are not partitioned. This leads to a large heat convection heat transfer loss, and large stress, slip dislocation, and falling off will still occur in the composite parts. For example, if the production process control of processes such as toothing and rolling is not appropriate, it will have a serious impact on product performance. For example, polyamide profiles and aluminum alloy profiles are separated during use. Technical personnel in this field are urgently in need of developing a production method for low-energy aluminum alloy fire-resistant door and window profiles. Summary of the invention
[0003] The purpose of the present invention is to provide a method for producing a low-energy consumption aluminum alloy fire-resistant door and window profile to solve the above technical problems.
[0004] A method for producing low-energy aluminum alloy fire-resistant door and window profiles, in addition to applying a protective film to the aluminum alloy profile after surface treatment, also includes the following steps: (1) toothing: rolling the two inner walls of the aluminum alloy profile strip slideway after the protective film is applied to form a serrated tooth path; (2) glue coating: evenly coating the serrated tooth path with polyamide hot melt adhesive; (3) striping: the glass fiber reinforced polyamide pultruded profile is inserted into the tooth path of the heat-insulating aluminum profile with the teeth opened through a threading device; (4) rolling: rolling the heat-insulating aluminum profile and the glass fiber reinforced polyamide pultruded profile together through a rolling device, and making them firmly bite the aluminum alloy profile in a composite manner; (5 ) Foaming filling: prepare a carbon aerogel polyurea foaming mixture and fill it in a glass fiber reinforced polyamide pultrusion cavity, and cure it at 25-30°C for 12-24h to obtain a carbon aerogel polyurea foaming mixture, wherein the carbon aerogel polyurea foaming mixture is a two-component uniform mixture, wherein component A is an isocyanate prepolymer, and component B is a mixture of amino polyether, carbon aerogel, diethyltoluenediamine, and N,N-dialkylmethyldiamine in a mass ratio of 38-40:15-16:18-20:18-20, the A and B components are in a mass ratio of 10-11:10, the filling temperature is 65-70°C, and the filling pressure is 5-6MPa.
[0005] Furthermore, the chopped glass fiber content of the glass fiber reinforced polyamide pultruded profile in step (2) is 22.5% to 25%.
[0006] Furthermore, the amino polyether in step (4) is one of CGA2-2000, D-2000 and AMD-2000.
[0007] Furthermore, the grade of the aluminum alloy profile in step (1) is one of 6063, 6463, and 6061, and the surface treatment category of the aluminum alloy profile is one or more of anodizing, electrophoretic painting, or powder coating.
[0008] Furthermore, the carbon aerogel in step (4) is one of CQ-13, CQ-20P or CA-HF01.
[0009] Furthermore, the isocyanate prepolymer in step (4) is C5051, 9480 or 9484 isocyanate prepolymer, and the NCO content of the isocyanate prepolymer is 14% to 16%.
[0010] Furthermore, the softening point of the polyamide hot melt adhesive in step (2) is 103-118°C, and the coating amount is 20-25 g / m 2 .
[0011] The present invention has the following beneficial effects: The method for producing low-energy aluminum alloy fire-resistant door and window profiles disclosed in the present invention uses a threading strip combined with hot melt adhesive, carbon aerogel polyurea foaming mixture and filling to composite a glass fiber reinforced polyamide pultruded profile with an aluminum alloy profile, so that the aluminum alloy profile and the heat-insulating profile are subjected to force together, while solving the leakage problem of traditional similar products. The connection strength is enhanced by the card-jointed notch between the aluminum alloy and the glass fiber reinforced polyamide pultruded profile through the polyamide hot melt adhesive. This not only improves the connection strength of the heat-insulating aluminum alloy profile, but also improves the heat-insulating sealing performance of the heat-insulating aluminum alloy profile. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural diagram of a composite door and window profile prepared from low-energy aluminum alloy fire-resistant door and window profiles and decorative panels in Example 3, wherein 1-aluminum alloy profile, 2-glass fiber reinforced polyamide pultruded profile, 3-carbon aerogel polyurea foaming mixture, 4-decorative panel; Figure 2 It is a view of the inner opening window of the low energy consumption aluminum alloy fire-resistant door and window profile 75 in Example 3; Figure 3 This is a view of the outward-opening window of the low-energy consumption aluminum alloy fire-resistant door and window profile 70 in Example 3. DETAILED DESCRIPTION
[0013] The present invention is described below with specific examples, but is not intended to be limiting of the present invention. Example 1
[0014] The aluminum alloy profile is grade 6061 and state is T6. The inner aluminum alloy profile film layer code is EA21 and the film layer performance level is Level III. The outer aluminum alloy profile film layer code is GA40 and the film layer performance level is Level III. The shear failure type of the thermal insulation profile is A, the heat transfer coefficient is Level I, and the cross-section is 421001; PA66GF25 (polyamide 66 plus 25% glass fiber), type I glass fiber reinforced polyamide pultruded profile; Kane 8830 polyamide hot melt adhesive softening point 03°C, hardness 65A; carbon aerogel CA-HF01; Minsheng Chemical AMD-2000; Huntsman 9484 isocyanate prepolymer, the isocyanate prepolymer NCO content is 15.5%.
[0015] The production method of low-energy aluminum alloy fire-resistant door and window profiles includes the following steps, in addition to pasting a PE plastic protective film on the aluminum alloy profile after surface treatment: 1. Tooth opening: rolling the two inner walls of the aluminum alloy profile after the protective film is passed through the slideway to form a serrated tooth path; 2. Gluing: evenly coating the serrated tooth path with polyamide hot melt glue, with a coating amount of 22g / m 2; 3. Strip insertion: The glass fiber reinforced polyamide pultruded profile is inserted into the tooth channel of the thermal insulation aluminum profile with the teeth opened through the threading equipment; 4. Rolling: The thermal insulation aluminum profile and the glass fiber reinforced polyamide pultruded profile are rolled together by the rolling equipment, and they are firmly bitten by the aluminum alloy profile in a composite manner; 5. Foaming filling: A carbon aerogel polyurea foaming mixture is prepared and filled in the glass fiber reinforced polyamide pultruded cavity, and cured at 28°C for 16h to obtain the carbon aerogel polyurea foaming mixture, wherein the carbon aerogel polyurea foaming mixture is a two-component uniform mixture, wherein component A is an isocyanate prepolymer, and component B is a mixture of amino polyether, carbon aerogel, diethyltoluenediamine, and N,N-dialkylmethyldiamine in a mass ratio of 39:16:18:20, the A and B components are in a mass ratio of 11:10, the filling temperature is 70°C, and the filling pressure is 5MPa.
[0016] Physical properties of low-energy aluminum alloy fire-resistant door and window profiles: longitudinal shear characteristic value at 23℃ 42.5N / mm, -30℃ 32.3N / mm, 70℃ 35.6N / mm; transverse tensile characteristic value at 23℃ 135.4N / mm, -30℃ 55.8N / mm, 70℃ 68.1N / mm; high temperature sustained load performance transverse tensile characteristic value 39.4N / mm, profile deformation 0.27mm; bending performance 23℃ 34.7N / mm, -30℃ 28.3N / mm, 70℃ 30.4N / mm.
[0017] The composite door and window profile is prepared by using the above-mentioned low-energy aluminum alloy fire-resistant door and window profile and decorative panel, wherein the decorative panel 4 is made of bamboo surface or UPVC and other low thermal conductivity composite materials. In this embodiment, bamboo surface decorative panel is selected and fixedly connected with the aluminum alloy profile 1 by rivet hardware. There are two glass fiber reinforced polyamide pultruded profiles 2 in the sawtooth tooth of the aluminum alloy profile 1, and the two glass fiber reinforced polyamide pultruded profiles 2 are filled with carbon aerogel polyurea foaming mixture 3. The moisture content of the decorative panel 4 should be controlled at 8.0%, and the side pressure gap should be controlled at ≤0.2mm. The surface is smooth and the texture is similar, without dead knots, insect eyes, decay, skinning, etc. The profile is flat, the edges and corners should be rounded, the ratio of the transverse chord height to the transverse length is less than 0.3%, and the edge straightness is less than 1.0mm / m. Example 2
[0018] The aluminum alloy profile is grade 6063, state is T5, the inner aluminum alloy profile film code is EA21, the film performance level is level III, the outer aluminum alloy profile film code is GA40, the film performance level is level III, the insulation profile shear failure type is A, the heat transfer coefficient is level I, and the cross section is 421001; PA66GF25 (polyamide 66 plus 22.5% glass fiber) type I glass fiber reinforced polyamide pultruded profile; Kane 8830A polyamide hot melt adhesive has a softening point of 118°C and a hardness of 80A; carbon aerogel CQ-13; Chenhua CGA2-2000; the isocyanate prepolymer is BASF C5051, and the NCO content of the isocyanate prepolymer is 14%.
[0019] The production method of low-energy aluminum alloy fire-resistant door and window profiles includes the following steps, in addition to pasting a PE plastic protective film on the aluminum alloy profile after surface treatment: 1. Tooth opening: rolling the two inner walls of the aluminum alloy profile after the protective film is passed through the slideway to form a serrated tooth path; 2. Gluing: evenly coating the serrated tooth path with polyamide hot melt glue, with a coating amount of 20g / m 2 ; 3. Strip insertion: The glass fiber reinforced polyamide pultruded profile is inserted into the tooth channel of the thermal insulation aluminum profile with the teeth opened through the threading equipment; 4. Rolling: The thermal insulation aluminum profile and the glass fiber reinforced polyamide pultruded profile are rolled together by the rolling equipment, and they are firmly bitten by the aluminum alloy profile in a composite manner; 5. Foaming filling: A carbon aerogel polyurea foaming mixture is prepared and filled in the glass fiber reinforced polyamide pultruded cavity, and cured at 25°C for 12h to obtain the carbon aerogel polyurea foaming mixture, wherein the carbon aerogel polyurea foaming mixture is a two-component uniform mixture, wherein component A is an isocyanate prepolymer, and component B is a mixture of amino polyether, carbon aerogel, diethyltoluenediamine, and N,N-dialkylmethyldiamine in a mass ratio of 38:15:18:18, the A and B components are in a mass ratio of 10:10, the filling temperature is 65°C, and the filling pressure is 5MPa.
[0020] Physical properties of low-energy aluminum alloy fire-resistant door and window profiles: longitudinal shear characteristic value at 23℃ 41.3N / mm, -30℃ 31.5N / mm, 70℃ 35.1N / mm; transverse tensile characteristic value at 23℃ 133.2N / mm, -30℃ 54.2N / mm, 70℃ 67.8N / mm; high temperature sustained load performance transverse tensile characteristic value 38.4N / mm, profile deformation 0.28mm; bending performance 23℃ 34.3N / mm, -30℃ 28.1N / mm, 70℃ 30.3N / mm.
[0021] The glass shall comply with the relevant provisions of JGG113. The sealing strip shall comply with the provisions of GB / T 24498, and the fasteners shall be machine-made stainless steel self-tapping screws. Other materials and hardware parts for windows shall comply with the provisions of Appendix B in JG / T 571-2019.
[0022] The above-mentioned low-energy aluminum alloy fire-resistant door and window profiles are used to produce 75 inward-opening aluminum alloy sample windows with a frame-to-glass ratio of 3:7 glass configuration: 5+12A+5+12A+6Low-E. The window surface diagram is as follows Figure 1 As shown, the wind pressure resistance performance is level 7, the thermal insulation K value of the whole window is 1.4, the indoor side is fire-resistant, the indoor standard temperature rise curve, and the gap exceeds the limit after 61 minutes of fire. Example 3
[0023] Aluminum alloy profile made of 6463 alloy, supplied in T5 state, with anodized AA20 surface treatment, section code 561001; glass fiber reinforced polyamide pultruded profile, with 22.5% chopped glass fiber content. Kane 8830A polyamide hot melt adhesive softening point 118℃, hardness 80A; carbon aerogel CQ-20P; Huntsman D-2000 isocyanate prepolymer; Huntsman 9480 isocyanate prepolymer, isocyanate prepolymer NCO content is 16%; The production method of low-energy aluminum alloy fire-resistant door and window profiles includes the following steps, in addition to pasting a PE plastic protective film on the aluminum alloy profile after surface treatment: 1. Tooth opening: rolling the two inner walls of the aluminum alloy profile after the protective film is passed through the slideway to form a serrated tooth path; 2. Gluing: evenly coating the serrated tooth path with polyamide hot melt glue, with a coating amount of 25g / m 2 ; 3. Strip insertion: The glass fiber reinforced polyamide pultruded profile is inserted into the tooth channel of the thermal insulation aluminum profile with the teeth opened through the threading equipment; 4. Rolling: The thermal insulation aluminum profile and the glass fiber reinforced polyamide pultruded profile are rolled together by the rolling equipment, and they are firmly bitten by the aluminum alloy profile in a composite manner; 5. Foaming filling: A carbon aerogel polyurea foaming mixture is prepared and filled in the glass fiber reinforced polyamide pultruded cavity, and cured at 30°C for 24h to obtain the carbon aerogel polyurea foaming mixture, wherein the carbon aerogel polyurea foaming mixture is a two-component uniform mixture, wherein component A is an isocyanate prepolymer, and component B is a mixture of amino polyether, carbon aerogel, diethyltoluenediamine, and N,N-dialkylmethyldiamine in a mass ratio of 40:16:20:20, the A and B components are in a mass ratio of 11:10, the filling temperature is 70°C, and the filling pressure is 6MPa.
[0024] Physical properties of low-energy aluminum alloy fire-resistant door and window profiles: longitudinal shear characteristic value at 23℃ 41.8N / mm, -30℃ 30.5N / mm, 70℃ 32.3N / mm; transverse tensile characteristic value at 23℃ 129.4N / mm, -30℃ 52.3N / mm, 70℃ 67.2N / mm; high temperature sustained load performance transverse tensile characteristic value 39.1N / mm, profile deformation 0.26mm; bending performance 23℃ 34.1N / mm, -30℃ 28.7N / mm, 70℃ 30.6N / mm.
[0025] The glass shall comply with the relevant provisions of JGG113. The sealing strip shall comply with the provisions of GB / T 24498, and the fasteners shall be machine-made stainless steel self-tapping screws. Other materials and hardware parts for windows shall comply with the provisions of Appendix B in JG / T 571-2019.
[0026] The above-mentioned low-energy aluminum alloy fire-resistant door and window profiles are used to produce 70 outward-opening aluminum alloy windows with a frame-to-glass ratio of 3:7 glass configuration: 5+9A+5+9A+6Low-E. The window surface diagram is as follows Figure 2 As shown, the wind pressure resistance performance is level 7, the thermal insulation K value of the whole window is 1.5, the outdoor side is fire-resistant, and the outdoor temperature rise standard heating curve is adopted. The gap exceeds the limit after 59 minutes of fire.
[0027] Note: With reference to the longitudinal shear characteristic value, the longitudinal shear test method shall be carried out in accordance with the provisions of GB / T28289; the transverse tensile characteristic value and the transverse tensile test method shall be carried out in accordance with the provisions of GB / T28289 or JG175; the high temperature endurance load test method shall be carried out in accordance with the provisions of GB / T28289 at 70℃ for 100h; the bending performance test method shall be carried out in accordance with the provisions of GB / T28289; the elastic coefficient test method shall be carried out in accordance with the provisions of GB / T28289; the creep coefficient test method shall be carried out in accordance with the provisions of GB / T28289; the thermal cycle fatigue performance test method shall be carried out in accordance with the provisions of GB / T28289; refer to GB / T 34482-2017 Determination of heat transfer coefficient of aluminum alloy insulation profiles for construction; GB / T 38252-2019 Test method for fire integrity of building doors and windows.
Claims
1. A method for producing low-energy aluminum alloy fire-resistant door and window profiles, wherein a protective film is applied to the surface-treated aluminum alloy profiles, characterized in that: The invention also includes the following steps: (1) toothing: rolling the inner walls of the aluminum alloy profile strip-threading slideway after the protective film is applied to form a serrated tooth path; (2) gluing: evenly applying polyamide hot melt adhesive on the serrated tooth path; (3) threading: the glass fiber reinforced polyamide pultruded profile is inserted into the tooth path of the thermal insulation aluminum profile with the teeth opened through the threading equipment; (4) rolling: rolling the thermal insulation aluminum profile and the glass fiber reinforced polyamide pultruded profile together through the rolling equipment, and making them firmly bite by the aluminum alloy profile in a composite manner; (5) foaming and filling: preparing a carbon aerogel polyurea foaming mixture The carbon aerogel polyurea foaming mixture is filled in a glass fiber reinforced polyamide pultrusion cavity and cured at 25-30°C for 12-24 hours to obtain a two-component uniform mixture, wherein component A is an isocyanate prepolymer, and component B is a mixture of amino polyether, carbon aerogel, diethyltoluenediamine, and N,N-dialkylmethyldiamine in a mass ratio of 38-40:15-16:18-20:18-20, the mass ratio of components A to B is 10-11:10, the filling temperature is 65-70°C, and the filling pressure is 5-6MPa.
2. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The glass fiber reinforced polyamide pultruded profile in step (2) has a chopped glass fiber content of 22.5% to 25%.
3. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The amino polyether in step (4) is one of CGA2-2000, D-2000 and AMD-2000.
4. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The aluminum alloy profile in step (1) is one of 6063, 6463, and 6061, and the surface treatment type of the aluminum alloy profile is one or more of anodizing, electrophoretic painting, or powder coating.
5. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The carbon aerogel in step (4) is one of CQ-13, CQ-20P or CA-HF01.
6. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The isocyanate prepolymer in step (4) is C5051, 9480 or 9484 isocyanate prepolymer, and the NCO content of the isocyanate prepolymer is 14% to 16%.
7. The method for producing low-energy aluminum alloy fire-resistant door and window profiles according to claim 1, characterized in that: The softening point of the polyamide hot melt adhesive in step (2) is 103-118°C, and the coating amount is 20-25 g / m 2 .