Thermal insulation material for broken bridge aluminum alloy profile and preparation method of thermal insulation material

Abstract

The invention provides a thermal insulation material for a broken bridge aluminum alloy profile and a preparation method thereof, and the thermal insulation material for the broken bridge aluminum alloy profile comprises a first glass fiber reinforced nylon 66 profile and a second glass fiber reinforced nylon 66 profile which are arranged in parallel on two sides at an interval, the thermal insulation material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the outer surface of the front side of the thermal insulation material is connected with a cover plate; the heat insulation material is prepared from the following raw materials in parts by mass: 30 to 50 parts of polyether polyol 4110, 20 to 40 parts of polyether polyol 380, 10 to 20 parts of polyether polyol 403, 30 to 70 parts of isocyanate, 1 to 3 parts of chain extender, 0.5 to 1.5 parts of foaming agent, 0.5 to 1.5 parts of cross-linking agent, 1 to 3 parts of catalyst, 0.5 to 1.5 parts of stabilizer and 1 to 3 parts of flame retardant. According to the thermal insulation material for the broken bridge aluminum alloy profile, the polyurethane foaming material and the cover plate have higher adhesiveness, and meanwhile, the polyurethane foaming material has better mechanical property, proper processability and higher reaction rate.

Description

Technical Field

[0001] The invention belongs to the technical field of heat-insulating materials for doors and windows, and specifically relates to a heat-insulating material for thermally broken aluminum alloy profiles and a preparation method thereof. Background Art

[0002] The full name of the thermal insulation aluminum alloy profile is thermal insulation aluminum alloy profile. It is a special aluminum alloy material, which is often used in doors and windows. The thermal insulation aluminum alloy profile is a profile that breaks the aluminum alloy in the middle and then reconnects the broken parts through thermal insulation materials. This structure can effectively block the heat transfer path, thereby improving the thermal insulation performance of the material. The thermal insulation aluminum alloy profile is usually composed of aluminum alloy profiles on both sides and thermal insulation materials located in the middle of the aluminum alloy profile. Connectors are provided on both sides of the thermal insulation material, and materials with thermal insulation properties are provided between the connectors on both sides. The materials with thermal insulation properties are connected to the aluminum alloy profile through connectors. Polyurethane foam material has excellent thermal insulation performance, high strength, good adaptability and stability, and is environmentally friendly and safe. It can be used as thermal insulation material in thermal insulation aluminum alloy profiles.

[0003] Since the middle of the broken bridge aluminum alloy profile with polyurethane foam material as the heat insulation material is polyurethane foam material, the polyurethane foam material is usually prepared by self-skinning process, and the surface quality is not beautiful enough, especially the inclined surface is visible and contactable during the use of doors and windows, which is easy to scratch, and the aesthetic feeling of doors and windows is affected after scratching. In order to improve its aesthetics, it is necessary to add a cover plate of other plastic materials (such as PVC, PA, PE, PP, etc.) to the inclined surface of the polyurethane foam material, so as to improve the surface quality, improve the product grade and decorative effect. When preparing the broken bridge aluminum alloy profile, a common method is to place the connecting pieces on both sides in a mold, directly inject the raw materials of the polyurethane foam material into the mold, and form it in one piece. There is also a method of preparing the polyurethane foam material first, and then bonding the polyurethane foam material to the connecting piece. However, plastic materials usually have lower surface energy and stronger chemical resistance, and it is difficult for the polyurethane foam material to form an effective bond on its surface, resulting in insufficient bonding strength between the two, and the cover plate is easy to fall off during use. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a thermal insulation material for thermally broken aluminum alloy profiles and a preparation method thereof, wherein the polyurethane foam material in the thermal insulation material has stronger adhesion to the cover plate, and the polyurethane foam material itself has better mechanical properties, suitable processing properties and faster reaction rate.

[0005] In order to solve the above problems, one aspect of the present invention provides a thermal insulation material for a thermally-insulated aluminum alloy profile, comprising a first glass fiber reinforced nylon 66 profile, a second glass fiber reinforced nylon 66 profile, a thermal insulation material and a cover plate; the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are parallel and spaced apart; the thermal insulation material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile; the left and right sides of the thermal insulation material are respectively connected to the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the cover plate is connected to the outer surface of the front side of the thermal insulation material;

[0006] The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0007] Polyether polyol 4110 30-50 parts, polyether polyol 380 20-40 parts, polyether polyol 40310-20 parts, isocyanate 30-70 parts, chain extender 1-3 parts, foaming agent 0.5-1.5 parts, cross-linking agent 0.5-1.5 parts, catalyst 1-3 parts, stabilizer 0.5-1.5 parts, flame retardant 1-3 parts.

[0008] Preferably, the raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0009] Polyether polyol 4110 36-44 parts, polyether polyol 380 28-33 parts, polyether polyol 40314-18 parts, isocyanate 42-56 parts, chain extender 1.5-2.4 parts, foaming agent 0.8-1.2 parts, cross-linking agent 0.8-1.2 parts, catalyst 1.5-2.4 parts, stabilizer 0.8-1.2 parts, flame retardant 1.2-2.2 parts.

[0010] Preferably, the raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0011] Polyether polyol 4110 38-42 parts, polyether polyol 380 29-31 parts, polyether polyol 40315-17 parts, isocyanate 46-52 parts, chain extender 1.8-2.2 parts, foaming agent 1-1.2 parts, cross-linking agent 1-1.2 parts, catalyst 1.8-2 parts, stabilizer 1-1.2 parts, flame retardant 1.6-2 parts.

[0012] Preferably, the mass ratio of polyether polyol 4110, polyether polyol 380 and polyether polyol 403 is 2.4-2.6:1.5-2.4:1.

[0013] Preferably, the isocyanate is polymethylene polyphenyl isocyanate;

[0014] The chain extender is a diamine chain extender;

[0015] The foaming agent is one of water and 1-fluoro-1,1-dichloroethane or a mixture of the two;

[0016] The cross-linking agent is one or a mixture of glycerol, ethylene glycol, 1,4-butanediol;

[0017] The catalyst is one or both of an organotin catalyst and a tertiary amine catalyst;

[0018] The stabilizer is an organosilicon surfactant;

[0019] The flame retardant is one of dimethyl phosphate, aluminum hydroxide, and melamine cyanurate, or a mixture of several of them.

[0020] Preferably, the cross-linking agent is a mixture of glycerol and 1,4-butanediol, and the mass ratio of glycerol to 1,4-butanediol is 1:2-4.

[0021] Preferably, a plurality of first protrusions for connecting with the aluminum alloy profile are provided on the outer sides of the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile.

[0022] Preferably, a plurality of second protrusions for connecting to the thermal insulation material are provided on the inner sides of the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile.

[0023] Another aspect of the present invention provides a method for preparing the above-mentioned thermal insulation material for thermally-insulated aluminum alloy profiles, comprising the following steps:

[0024] S1. According to the selected mass fractions, polyether polyol 4110, polyether polyol 380, polyether polyol 403, a chain extender, a blowing agent, a crosslinking agent, a catalyst, a stabilizer and a flame retardant are mixed to obtain component A;

[0025] S2. Take isocyanate according to the selected mass fraction to obtain component B;

[0026] S3. The component A and the component B are added to the foaming agent and mixed to obtain a mixture;

[0027] S4. placing the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile, and the cover plate in a molding mold;

[0028] S5. Injecting the mixed material into the molding die and performing foaming molding to obtain the thermal insulation material for the thermally-insulated aluminum alloy profile.

[0029] Preferably, it also includes:

[0030] Before step S5, an amine surface treatment agent is coated on the inner surfaces of the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile and the cover plate, wherein the amine surface treatment agent comprises an amine compound and a solvent; the amine compound is a mixture of one or more of ethylenediamine, propylamine and butylamine; the solvent is acetone or toluene; and the mass percentage of the amine compound in the amine surface treatment agent is 30% to 40%.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The thermal insulation material for the broken bridge aluminum alloy profile of the present invention has a cover plate arranged on the outer surface of the front inclined surface of the polyurethane thermal insulation material, which can improve the surface quality, improve the product grade and decorative effect, and the color of the cover plate can be flexible and changeable to meet the personalized needs of customers.

[0033] The thermal insulation material for the broken bridge aluminum alloy profile of the present invention adopts three kinds of polyether polyols as soft segments, among which polyether polyol 380 is a polyether polyol polymerized with propylene oxide using compounds such as sucrose as composite initiators, and has high functionality, which can improve the cross-linking degree of polyurethane, and can improve the bonding strength between polyurethane and the cover plate, as well as its mechanical properties. In addition, polyether polyol 380 has a strong polarity, and by improving the polarity of polyurethane, chemical bonds are formed with active hydrogen on the surface of the plastic material of the cover plate, thereby improving the bonding strength between polyurethane and the cover plate. However, polyether polyol 380 has a high viscosity, which will increase the difficulty of material processing. For this reason, polyether polyol 4110 is further added. Polyether polyol 4110 is a polyether with compounds such as sucrose as initiators, has a higher hydroxyl value and polarity, can further improve the polarity of the generated polyurethane, thereby improving its bonding strength with the cover plate, more importantly, polyether polyol 4110 has good fluidity and processing performance, and polyether polyol 4110 is matched with polyether polyol 380 to adjust the viscosity of the raw materials and improve its processing performance. However, the reaction activity of the above two polyether polyols is low. For this reason, the present invention further adds polyether polyol 403, which is a polyether polyol directly polymerized with propylene oxide using ethylenediamine as an initiator, has high activity, can accelerate the cross-linking reaction of foaming, and improve the strength of the foam product. Through the coordination and dosage control of the three polyether polyols, the polyurethane in the thermal insulation material has strong adhesion, mechanical properties, suitable processing performance and faster reaction rate with the cover plate at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the thermal insulation material for the thermally-insulated aluminum alloy profile according to an embodiment of the present invention.

[0035] Among them: 1-first glass fiber reinforced nylon 66 profile; 2-second glass fiber reinforced nylon 66 profile; 3-thermal insulation material; 4-cover plate; 5-first protrusion; 6-second protrusion. DETAILED DESCRIPTION

[0036] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] One aspect of an embodiment of the present invention provides a thermal insulation material for a thermally-insulated aluminum alloy profile, comprising a first glass fiber reinforced nylon 66 profile, a second glass fiber reinforced nylon 66 profile, a thermal insulation material, and a cover plate; the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are parallel and spaced apart; the thermal insulation material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile; the left and right sides of the thermal insulation material are respectively connected to the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the cover plate is connected to the outer surface of the front side of the thermal insulation material;

[0038] The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0039] Polyether polyol 4110 30-50 parts, polyether polyol 380 20-40 parts, polyether polyol 40310-20 parts, isocyanate 30-70 parts, chain extender 1-3 parts, foaming agent 0.5-1.5 parts, cross-linking agent 0.5-1.5 parts, catalyst 1-3 parts, stabilizer 0.5-1.5 parts, flame retardant 1-3 parts.

[0040] The thermal insulation material for the broken bridge aluminum alloy profile of the embodiment of the present invention has a cover plate arranged on the outer surface of the front inclined surface of the polyurethane thermal insulation material, which can improve the surface quality, product grade and decorative effect, and the color of the cover plate can be flexible and changeable to meet the personalized needs of customers. Further, the present invention uses three kinds of polyether polyols as soft segments, among which polyether polyol 380 is a polyether polyol polymerized with propylene oxide using compounds such as sucrose as composite initiators, and has high functionality, which improves the crosslinking degree of polyurethane, can improve the bonding strength between polyurethane and the cover plate, and its mechanical properties, and polyether polyol 380 has a strong polarity, and by improving the polarity of polyurethane, chemical bonds are formed with the active hydrogen on the surface of the cover plate plastic material, thereby improving the bonding strength between polyurethane and the cover plate; but polyether polyol 380 has a high viscosity, which will increase the difficulty of material processing. For this reason, polyether polyol 4110 is further added. Polyether polyol 4110 is a polyether with compounds such as sucrose as initiators, has a higher hydroxyl value and polarity, can further improve the polarity of the generated polyurethane, thereby improving its bonding strength with the cover plate, more importantly, polyether polyol 4110 has good fluidity and processing performance, and polyether polyol 4110 is matched with polyether polyol 380 to adjust the viscosity of the raw materials and improve its processing performance. However, the reaction activity of the above two polyether polyols is low. For this reason, the present invention further adds polyether polyol 403, which is a polyether polyol directly polymerized with propylene oxide using ethylenediamine as an initiator, has high activity, can accelerate the cross-linking reaction of foaming, and improve the strength of the foam product. Through the coordination and dosage control of the three polyether polyols, the polyurethane in the thermal insulation material has strong adhesion, mechanical properties, suitable processing performance and faster reaction rate with the cover plate at the same time.

[0041] In some embodiments, the increase of polyether polyol 380 in the raw material can improve the bonding strength and mechanical properties of the polyurethane, but reduce the processing performance of the polyurethane. The increase of polyether polyol 4110 can improve the bonding strength of the polyurethane and improve the fluidity of the raw material, but reduce the reactivity of the raw material and the mechanical properties. The increase of polyether polyol 403 can improve the reactivity of the raw material and improve the mechanical properties, but reduce the bonding strength of the polyurethane. Therefore, it is necessary to regulate the mass fraction of each component in the raw material so that the polyurethane thermal insulation material has multiple excellent properties. Preferably, the raw materials for preparing the thermal insulation material include the following mass fractions of components:

[0042] Polyether polyol 4110 36-44 parts, polyether polyol 380 28-33 parts, polyether polyol 40314-18 parts, isocyanate 42-56 parts, chain extender 1.5-2.4 parts, foaming agent 0.8-1.2 parts, cross-linking agent 0.8-1.2 parts, catalyst 1.5-2.4 parts, stabilizer 0.8-1.2 parts, flame retardant 1.2-2.2 parts. By using the above mass parts, the polyurethane in the thermal insulation material can have strong adhesion with the cover plate, mechanical properties, suitable processing properties and faster reaction rate.

[0043] Further preferably, the raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0044] Polyether polyol 4110 38-42 parts, polyether polyol 380 29-31 parts, polyether polyol 40315-17 parts, isocyanate 46-52 parts, chain extender 1.8-2.2 parts, foaming agent 1-1.2 parts, cross-linking agent 1-1.2 parts, catalyst 1.8-2 parts, stabilizer 1-1.2 parts, flame retardant 1.6-2 parts.

[0045] Preferably, the mass ratio of polyether polyol 4110, polyether polyol 380 and polyether polyol 403 is 2.4-2.6:1.5-2.4:1.

[0046] In some embodiments, the isocyanate is polymethylene polyphenyl isocyanate.

[0047] In some embodiments, the chain extender is a diamine chain extender. In addition to the urethane carbonyl group, a large number of urea carbonyl groups are generated in the molecular chain of the synthesized polyurethane thermal insulation material. The ester carbonyl group of the soft segment, the carbamate carbonyl group of the hard segment, and the urea carbonyl group can form hydrogen bonds with the imino group in the diamine chain extender, thereby improving the mechanical properties of the polyurethane and improving its heat resistance. Specifically, the diamine chain extender can be MOCA, i.e., di-o-chlorodiphenylamine methane.

[0048] In some embodiments, the blowing agent is water, 1-fluoro-1,1-dichloroethane, or a mixture of both.

[0049] In some embodiments, the cross-linking agent is one of glycerol, ethylene glycol, 1,4-butanediol, or a mixture of several thereof.

[0050] Glycerol as a cross-linking agent can quickly form a cross-linked network, but too much glycerol may lead to too high a cross-linking density, affecting the flexibility and elasticity of the polyurethane. 1,4-Butanediol as a cross-linking agent may form longer segments or more complex network structures in the polyurethane foam, thereby improving its mechanical properties, thermal stability and weather resistance. Therefore, the use of the two cross-linking agents can make the polyurethane cross-linking density appropriate, and the mechanical properties and heat resistance better. Preferably, the cross-linking agent is a mixture of glycerol and 1,4-butanediol, and the mass ratio of glycerol to 1,4-butanediol is 1:2 to 4.

[0051] In some embodiments, the catalyst is one or both of an organotin catalyst and a tertiary amine catalyst.

[0052] In some embodiments, the stabilizer is a silicone surfactant.

[0053] In some embodiments, the flame retardant is one or a mixture of dimethyl phosphate, aluminum hydroxide, and melamine cyanurate.

[0054] In some embodiments, a plurality of first protrusions for connecting to the aluminum alloy profile are provided on the outer sides of the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile.

[0055] In some embodiments, the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are provided with a plurality of second protrusions for connecting with the thermal insulation material. The provision of the protrusions can improve the connection strength between the profile and the thermal insulation material and the aluminum alloy profile.

[0056] Another aspect of the embodiments of the present invention provides a method for preparing the above-mentioned thermal insulation material for the thermally-insulated aluminum alloy profile, comprising the following steps:

[0057] S1. According to the selected mass fractions, polyether polyol 4110, polyether polyol 380, polyether polyol 403, a chain extender, a blowing agent, a crosslinking agent, a catalyst, a stabilizer and a flame retardant are mixed to obtain component A;

[0058] S2. Take isocyanate according to the selected mass fraction to obtain component B;

[0059] S3. The component A and the component B are added to the foaming agent and mixed to obtain a mixture;

[0060] S4. placing the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile, and the cover plate in a molding mold;

[0061] S5. Injecting the mixed material into the molding die and performing foaming molding to obtain the thermal insulation material for the thermally-insulated aluminum alloy profile.

[0062] In some embodiments, the preparation method further comprises:

[0063] Before step S5, an amine surface treatment agent is coated on the inner surfaces of the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile and the cover plate, wherein the amine surface treatment agent comprises an amine compound and a solvent; the amine compound is a mixture of one or more of ethylenediamine, propylamine and butylamine; the solvent is acetone or toluene; and the mass percentage of the amine compound in the amine surface treatment agent is 30% to 40%.

[0064] An amine surface treatment agent is coated on the surface of the cover plate to form amino groups on the surface of the cover plate and provide active hydrogen. The amino groups can react chemically with isocyanate groups (-NCO) or other active groups in the polyurethane molecular chain to form chemical bonds. For example, they react with isocyanate groups to form urea bonds. The strength of such bonds is usually high, thereby improving the adhesion and durability of the polyurethane foam and the cover plate.

[0065] Example 1

[0066] like Figure 1 As shown, the thermal insulation material for the thermally-insulated aluminum alloy profile of this embodiment includes a first glass fiber reinforced nylon 66 profile 1, a second glass fiber reinforced nylon 66 profile 2, a thermal insulation material 3 and a cover plate 4; the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are parallel and spaced apart; the thermal insulation material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile; the left and right sides of the thermal insulation material are respectively connected to the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the cover plate is connected to the outer surface of the front side of the thermal insulation material; the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are provided with a plurality of first protrusions 5 for connecting with the aluminum alloy profile on the outside. The first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are provided with a plurality of second protrusions 6 for connecting with the thermal insulation material on the inside.

[0067] The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0068] 38 parts of polyether polyol 4110, 31 parts of polyether polyol 380, 15 parts of polyether polyol 403, 52 parts of polymethylene polyphenyl isocyanate, 2.2 parts of MOCA (chain extender), 1 part of water (foaming agent), 0.2 parts of glycerol, 0.8 parts of 1,4-butanediol (cross-linking agent), 2 parts of dibutyltin dilaurate (catalyst), 1.2 parts of (silicone surfactant) stabilizer, and 1.6 parts of dimethyl phosphate (flame retardant).

[0069] The method for preparing the thermal insulation material for the thermally-insulated aluminum alloy profile of the present embodiment comprises the following steps:

[0070] S1. According to the selected mass fractions, polyether polyol 4110, polyether polyol 380, polyether polyol 403, a chain extender, a blowing agent, a crosslinking agent, a catalyst, a stabilizer and a flame retardant are mixed to obtain component A;

[0071] S2. Take isocyanate according to the selected mass fraction to obtain component B;

[0072] S3. Adding component A and component B to the foaming agent and mixing to obtain a mixture;

[0073] S4. placing a first glass fiber reinforced nylon 66 profile, a second glass fiber reinforced nylon 66 profile, and a cover plate in a molding die; coating the inner surfaces of the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile, and the cover plate with an amine surface treatment agent, the amine surface treatment agent comprising ethylenediamine and acetone; the mass percentage of ethylenediamine being 35%;

[0074] S5. Inject the mixed material into the molding die, perform foaming molding, and obtain the thermal insulation material for the thermally-insulated aluminum alloy profile.

[0075] Example 2

[0076] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0077] 42 parts of polyether polyol 4110, 29 parts of polyether polyol 380, 17 parts of polyether polyol 403, 46 parts of polymethylene polyphenyl isocyanate, 1.8 parts of MOCA (chain extender), 1.2 parts of water (foaming agent), 0.4 parts of glycerol, 0.8 parts of 1,4-butanediol (cross-linking agent), 1.8 parts of dibutyltin dilaurate (catalyst), 1 part of (silicone surfactant) stabilizer, and 2 parts of dimethyl phosphate (flame retardant).

[0078] Example 3

[0079] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0080] 40 parts of polyether polyol 4110, 30 parts of polyether polyol 380, 16 parts of polyether polyol 403, 50 parts of polymethylene polyphenyl isocyanate, 2 parts of MOCA (chain extender), 1.1 parts of water (foaming agent), 0.3 parts of glycerol, 0.9 parts of 1,4-butanediol (cross-linking agent), 1.9 parts of dibutyltin dilaurate (catalyst), 1.1 parts of (silicone surfactant) stabilizer, and 1.8 parts of dimethyl phosphate (flame retardant).

[0081] Example 4

[0082] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0083] 36 parts of polyether polyol 4110, 33 parts of polyether polyol 380, 14 parts of polyether polyol 403, 56 parts of polymethylene polyphenyl isocyanate, 1.5 parts of MOCA (chain extender), 0.8 parts of water (foaming agent), 0.4 parts of glycerol, 0.8 parts of 1,4-butanediol (cross-linking agent), 2.4 parts of dibutyltin dilaurate (catalyst), 1.2 parts of (silicone surfactant) stabilizer, and 2.2 parts of dimethyl phosphate (flame retardant).

[0084] Example 5

[0085] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0086] 44 parts of polyether polyol 4110, 28 parts of polyether polyol 380, 18 parts of polyether polyol 403, 42 parts of polymethylene polyphenyl isocyanate, 2.4 parts of MOCA (chain extender), 1.2 parts of water (foaming agent), 0.2 parts of glycerol, 0.6 parts of 1,4-butanediol (cross-linking agent), 1.5 parts of dibutyltin dilaurate (catalyst), 0.8 parts of (silicone surfactant) stabilizer, and 1.2 parts of dimethyl phosphate (flame retardant).

[0087] Example 6

[0088] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0089] 30 parts of polyether polyol 4110, 40 parts of polyether polyol 380, 10 parts of polyether polyol 403, 70 parts of polymethylene polyphenyl isocyanate, 1 part of MOCA (chain extender), 0.5 parts of water (foaming agent), 0.3 parts of glycerol, 1,4-butanediol (cross-linking agent), 1 part of dibutyltin dilaurate (catalyst), 1.5 parts of (silicone surfactant) stabilizer, and 3 parts of dimethyl phosphate (flame retardant).

[0090] Example 7

[0091] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The raw materials for preparing the thermal insulation material include the following components in parts by mass:

[0092] 50 parts of polyether polyol 4110, 20 parts of polyether polyol 380, 20 parts of polyether polyol 403, 30 parts of polymethylene polyphenyl isocyanate, 3 parts of MOCA (chain extender), 1.5 parts of water (foaming agent), 0.1 parts of glycerol, 0.4 parts of 1,4-butanediol (cross-linking agent), 3 parts of dibutyltin dilaurate (catalyst), 0.5 parts of (silicone surfactant) stabilizer, and 1 part of dimethyl phosphate (flame retardant).

[0093] Example 8

[0094] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of Example 3, except that: 36 parts of polyether polyol 4110, 35 parts of polyether polyol 380, and 15 parts of polyether polyol 403. That is, the mass ratio of polyether polyol 4110, polyether polyol 380, and polyether polyol 403 is 2.4:2.33:1.

[0095] Example 9

[0096] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of Example 3, except that: 43.5 parts of polyether polyol 4110, 25.5 parts of polyether polyol 380, and 17 parts of polyether polyol 403. That is, the mass ratio of polyether polyol 4110, polyether polyol 380, and polyether polyol 403 is 2.55:1.5:1.

[0097] Example 10

[0098] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of Example 3, except that: 32 parts of polyether polyol 4110, 39 parts of polyether polyol 380, and 15 parts of polyether polyol 403. That is, the mass ratio of polyether polyol 4110, polyether polyol 380, and polyether polyol 403 is 2.1:2.6:1.

[0099] Embodiment 11

[0100] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of Example 3, except that: 45 parts of polyether polyol 4110, 24 parts of polyether polyol 380, and 17 parts of polyether polyol 403. That is, the mass ratio of polyether polyol 4110, polyether polyol 380, and polyether polyol 403 is 2.65:1.41:1.

[0101] Example 12

[0102] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents of the raw materials for preparing the thermal insulation material are the same as those of embodiment 3, except that 0.4 parts of glycerol and 0.8 parts of 1,4-butanediol are used. That is, the mass ratio of glycerol to 1,4-butanediol is 1:2.

[0103] Example 13

[0104] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of embodiment 1, except that the raw materials for preparing the thermal insulation material are different, and the remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of embodiment 3, except that 0.24 parts of glycerol and 0.96 parts of 1,4-butanediol are used, that is, the mass ratio of glycerol to 1,4-butanediol is 1:4.

[0105] Embodiment 14

[0106] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents of the raw materials for preparing the thermal insulation material are the same as those of embodiment 3, except that 0.6 parts of glycerol and 0.6 parts of 1,4-butanediol are used. That is, the mass ratio of glycerol to 1,4-butanediol is 1:1.

[0107] Embodiment 15

[0108] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as that of embodiment 1, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those of embodiment 3, except that: 0.2 parts of glycerol and 1 part of 1,4-butanediol. That is, the mass ratio of glycerol to 1,4-butanediol is 1:5.

[0109] Example 16

[0110] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same other structures and preparation methods as those of Example 1, except that the raw materials for preparing the thermal insulation material are different. The other components and contents in the raw materials for preparing the thermal insulation material are the same as those of Example 3, except that only 1.2 parts of glycerol are added as the cross-linking agent.

[0111] Embodiment 17

[0112] The thermal insulation material for the broken bridge aluminum alloy profile of this embodiment has the same structure and preparation method as Example 1, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that only 1.2 parts of 1,4-butanediol are added as the cross-linking agent.

[0113] Comparative Example 1

[0114] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that only 86 parts of polyether polyol 4110 are used for the polyether polyol.

[0115] Comparative Example 2

[0116] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that only 380 86 parts of polyether polyol are used.

[0117] Comparative Example 3

[0118] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that only 403 86 parts of polyether polyol are used.

[0119] Comparative Example 4

[0120] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that: the polyether polyol uses 49 parts of polyether polyol 4110 and 37 parts of polyether polyol 380.

[0121] Comparative Example 5

[0122] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that: the polyether polyol uses 56 parts of polyether polyol 380 and 30 parts of polyether polyol 403.

[0123] Comparative Example 6

[0124] The thermal insulation material for the broken bridge aluminum alloy profile of this comparative example has the same structure and preparation method as Example 3, except that the raw materials for preparing the thermal insulation material are different. The remaining components and contents in the raw materials for preparing the thermal insulation material are the same as those in Example 3, except that: the polyether polyol uses 61 parts of polyether polyol 4110 and 25 parts of polyether polyol 403.

[0125] The thermal insulation materials for the thermally broken aluminum alloy profiles obtained in the above-mentioned embodiments and comparative examples were subjected to high-temperature longitudinal shear strength test and high-temperature transverse tensile strength test, and the test was performed according to the test method specified in GB / T 5237.6-2017 to evaluate the bonding strength between the thermal insulation material and the cover plate. The prepared polyurethane thermal insulation material was subjected to compressive strength test and tensile strength test to evaluate the mechanical properties of the polyurethane thermal insulation material itself. The test results are shown in Table 1 below.

[0126] It can be seen from the test results in Table 1 below that the bonding strength between the thermal insulation material for the broken aluminum alloy profile and the cover plate of Comparative Examples 1-6 is poor or the mechanical properties of the polyurethane thermal insulation material are poor. In contrast, the thermal insulation material for the broken aluminum alloy profile of each embodiment of the present invention simultaneously obtains excellent bonding strength and mechanical properties.

[0127] Compared with Examples 1-7 of the present invention, the difference is that the mass fractions of each component are different, among which, Example 1-5 is a preferred implementation, and its comprehensive performance is better than that of Examples 6 and 7, and Example 1-3 is a further preferred implementation, and its comprehensive performance is better than that of Examples 4 and 5.

[0128] Compared with Examples 3, 8-11, the difference is that the mass ratios of the three polyether polyols are different. Among them, the mass ratios of Examples 3, 8, and 9 are within the preferred range, and their comprehensive performance is better.

[0129] Compared with Examples 3 and 12-17, only one cross-linking agent was used in Examples 16 and 17, and the comprehensive performance was not as good as that of Examples 3 and 12-15. The mass ratio of the two cross-linking agents in Examples 3, 12 and 13 was within the preferred range, and the comprehensive performance was better.

[0130] Table 1

[0131]

[0132]

[0133] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A thermal insulation material for a thermally-insulated aluminum alloy profile, characterized in that: The invention comprises a first glass fiber reinforced nylon 66 profile, a second glass fiber reinforced nylon 66 profile, a heat insulating material and a cover plate; the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are parallel and spaced apart; the heat insulating material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile; the left and right sides of the heat insulating material are respectively connected to the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the cover plate is connected to the outer surface of the front side of the heat insulating material; The raw materials for preparing the thermal insulation material include the following components in parts by mass: Polyether polyol 4110 30-50 parts, polyether polyol 380 20-40 parts, polyether polyol 40310-20 parts, isocyanate 30-70 parts, chain extender 1-3 parts, foaming agent 0.5-1.5 parts, cross-linking agent 0.5-1.5 parts, catalyst 1-3 parts, stabilizer 0.5-1.5 parts, flame retardant 1-3 parts.

2. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 1, characterized in that: The raw materials for preparing the thermal insulation material include the following components in parts by mass: Polyether polyol 4110 36-44 parts, polyether polyol 380 28-33 parts, polyether polyol 40314-18 parts, isocyanate 42-56 parts, chain extender 1.5-2.4 parts, foaming agent 0.8-1.2 parts, cross-linking agent 0.8-1.2 parts, catalyst 1.5-2.4 parts, stabilizer 0.8-1.2 parts, flame retardant 1.2-2.2 parts.

3. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 2, characterized in that: The raw materials for preparing the thermal insulation material include the following components in parts by mass: Polyether polyol 4110 38-42 parts, polyether polyol 380 29-31 parts, polyether polyol 40315-17 parts, isocyanate 46-52 parts, chain extender 1.8-2.2 parts, foaming agent 1-1.2 parts, cross-linking agent 1-1.2 parts, catalyst 1.8-2 parts, stabilizer 1-1.2 parts, flame retardant 1.6-2 parts.

4. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 1, characterized in that: The mass ratio of polyether polyol 4110, polyether polyol 380 and polyether polyol 403 is 2.4-2.6:1.5-2.4:

1.

5. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 1, characterized in that: The isocyanate is polymethylene polyphenyl isocyanate; The chain extender is a diamine chain extender; The foaming agent is one of water and 1-fluoro-1,1-dichloroethane or a mixture of the two; The cross-linking agent is one or a mixture of glycerol, ethylene glycol, 1,4-butanediol; The catalyst is one or both of an organotin catalyst and a tertiary amine catalyst; The stabilizer is an organosilicon surfactant; The flame retardant is one of dimethyl phosphate, aluminum hydroxide, and melamine cyanurate, or a mixture of several of them.

6. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 5, characterized in that: The cross-linking agent is a mixture of glycerol and 1,4-butanediol, and the mass ratio of glycerol to 1,4-butanediol is 1:2-4.

7. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 1, characterized in that: The outer sides of the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are provided with a plurality of first protrusions for connecting with the aluminum alloy profile.

8. The thermal insulation material for broken bridge aluminum alloy profiles according to claim 1, characterized in that: The inner sides of the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile are provided with a plurality of second protrusions for connecting with the thermal insulation material.

9. A method for preparing a thermal insulation material for a thermally-insulated aluminum alloy profile according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. According to the selected mass fractions, polyether polyol 4110, polyether polyol 380, polyether polyol 403, a chain extender, a blowing agent, a crosslinking agent, a catalyst, a stabilizer and a flame retardant are mixed to obtain component A; S2. Take isocyanate according to the selected mass fraction to obtain component B; S3. The component A and the component B are added to the foaming agent and mixed to obtain a mixture; S4. placing the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile, and the cover plate in a molding mold; S5. Injecting the mixed material into the molding die and performing foaming molding to obtain the thermal insulation material for the thermally-insulated aluminum alloy profile.

10. The preparation method according to claim 9, characterized in that: Also includes: Before step S5, an amine surface treatment agent is coated on the inner surfaces of the first glass fiber reinforced nylon 66 profile, the second glass fiber reinforced nylon 66 profile and the cover plate, wherein the amine surface treatment agent comprises an amine compound and a solvent; the amine compound is a mixture of one or more of ethylenediamine, propylamine and butylamine; the solvent is acetone or toluene; and the mass percentage of the amine compound in the amine surface treatment agent is 30% to 40%.

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