A sound-insulating and heat-insulating dual-effect curtain fabric coating and its preparation method
By introducing a porous structure and interface modification treatment into the curtain fabric coating, the problem of insufficient sound and heat insulation performance of traditional curtain fabrics is solved, and sound wave energy dissipation and heat conduction path extension are achieved, thereby improving the sound and heat insulation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG YUANZHENG FABRIC ART CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional curtain fabrics lack multi-interface design, so sound waves cannot be fully reflected, refracted, and dissipated through viscosity during propagation, resulting in limited energy attenuation and insufficient sound and heat insulation performance.
The filler, composed of nano-silica, intermediate materials, powders and additives, forms a sound wave reflection, refraction and viscous dissipation mechanism through porous structure design and interface modification treatment. At the same time, hollow glass microspheres and air cavities are used to form a double thermal resistance barrier to enhance the interfacial bonding strength and thermal barrier function.
The sound insulation and heat insulation performance of the curtain fabric coating is improved, the sound wave energy is effectively dissipated and the heat conduction path is extended, and the sound insulation and heat insulation effect of the coating is significantly improved.
Smart Images
Figure CN122304201A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coating technology, specifically to a sound-insulating and heat-insulating dual-effect curtain fabric coating and its preparation method. Background Technology
[0002] Curtains are a common home decoration and functional product, usually made of textile fabrics, and hung on building doors and windows. They are mainly used to block light, protect indoor privacy, and beautify the space, and are an important auxiliary component for improving the comfort of modern buildings.
[0003] In existing technologies, traditional curtains are mainly made of textile materials. Single-layer homogeneous fabrics lack multi-interface design, and sound waves cannot undergo sufficient reflection, refraction, and viscous dissipation during propagation, resulting in limited energy attenuation. Based on this, the present invention provides a sound-insulating and heat-insulating dual-effect curtain fabric coating and its preparation method. Summary of the Invention
[0004] The purpose of this invention is to provide a sound-insulating and heat-insulating dual-effect curtain fabric coating and its preparation method. The curtain fabric coating prepared by this invention not only has good sound insulation performance, but also excellent heat insulation performance, effectively improving the performance of the curtain fabric coating.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a sound-insulating and heat-insulating dual-effect curtain fabric coating, comprising the following raw materials in parts by weight: 50-60 parts epoxy resin, 18-20 parts curing agent, 4-6 parts diluent, 28-32 parts filler, 0.8-1.2 parts antioxidant and 2-4 parts flame retardant; The raw materials for the filler include nano-silica, intermediate materials, powder, anhydrous ethanol, hexamethyldisilazane, additives, and triethylamine; The raw materials for the powder include discarded bamboo chopsticks, zinc chloride solution, and additives; The additives are made from cashew phenol, epichlorohydrin, benzyltriethylammonium chloride and ethyl acetate.
[0006] Further, the packing material is prepared by the following method: nano-silica, intermediate material, powder and anhydrous ethanol are mixed and stirred at 200-300 rpm for 15-25 min, hexamethyldisilazane is added and stirred at 300-400 rpm for 30-40 min, additives and triethylamine are added and stirred at 30-40℃ and 300-400 rpm for 10-15 min, the temperature is raised to 70-90℃ and stirred at 100-200 rpm for 2-4 h, filtered to obtain the first filter residue, washed and vacuum dried at 60-80℃ for 8-12 h to obtain the packing material.
[0007] Further, the mass ratio of nano-silica, intermediate material, powder and anhydrous ethanol is (0.2-0.3):(0.6-1):1:(10-12), the mass of hexamethyldisilazane is 5-15% of the mass of nano-silica, and the mass ratio of powder, additive and triethylamine is 10:(2-4):(0.03-0.05).
[0008] Further, the intermediate material is prepared by the following method: anhydrous ethanol and deionized water are mixed, silane coupling agent KH-570 is added, and the mixture is stirred at 200-300 rpm for 5-10 min. Hollow glass microspheres are added, and the mixture is stirred at 200-300 rpm for 2-4 h. The mixture is filtered, the second filter residue is taken, washed, and dried at 60-80℃ for 4-6 h to obtain the intermediate material. The mass ratio of anhydrous ethanol, deionized water, silane coupling agent KH-570, and hollow glass microspheres is 6:3:0.02:1.5.
[0009] Further, the powder is prepared by the following method: waste bamboo chopsticks are washed and dried, crushed and passed through a 100-200 mesh sieve to obtain bamboo powder, bamboo powder and zinc chloride solution are mixed at a mass ratio of 1:(2-4), stirred at 100-200 rpm for 12-16 h, filtered, the third filter residue is taken, washed and dried, and then heated to 350-450℃ at 5℃ / min under nitrogen protection, held for 1-3 h, washed and dried to obtain coarse material, additives are added, heated at -0.1MPa and 75-85℃ for 1-2 h, cooled, and crushed through a 300 mesh sieve to obtain powder.
[0010] Furthermore, the zinc chloride solution has a mass concentration of 30%, and the mass ratio of crude material to additive is 1:(0.8-1.2).
[0011] Further, the additive is prepared by the following method: waste feathers are washed, dried, and pulverized through a 200-mesh sieve to obtain feather powder. The feather powder is mixed with maleic anhydride at a mass ratio of 1:(0.4-0.6), and 1-2% of benzoyl peroxide by weight of the feather powder is added. The mixture is stirred for 3-5 hours under closed conditions at 100-200 rpm and 80-90℃. After washing and drying, a mixture is obtained. The mixture, zinc stearate, and microcrystalline wax are mixed at a mass ratio of 3:1:1. The mixture is stirred for 30-50 minutes under conditions at 80-90℃ and 200-300 rpm. After cooling, the mixture is pulverized through a 300-mesh sieve to obtain the additive.
[0012] Further, the additive is prepared by the following method: cashew phenol and epichlorohydrin are mixed at a mass ratio of 1:(0.8-1.2) and mixed at 200-300 rpm for 20-30 min. 1-3% of benzyltriethylammonium chloride by mass of cashew phenol is added, and the mixture is stirred at 60-80℃ and 200-300 rpm for 4-6 h to obtain a mixed product. Ethyl acetate is added at 40-50℃, and the mixture is allowed to stand for 10-20 min. The supernatant is taken, washed, and distilled at -0.08 MPa and 50-60℃ for 1-3 h to obtain the additive.
[0013] Furthermore, the epoxy resin is epoxy resin E51, the curing agent is polyetheramine D230, the diluent is benzyl alcohol, the flame retardant is triphenyl phosphate, and the antioxidant is antioxidant 1010.
[0014] Furthermore, the preparation method of the sound-insulating and heat-insulating dual-effect curtain fabric coating includes the following steps: taking epoxy resin, diluent, antioxidant, and flame retardant as needed, mixing them, stirring at 40-60℃ and 400-500rpm for 10-20min, adding filler, continuing to stir for 20-30min, adding curing agent, stirring at 200-300rpm for 5-10min, then vacuum degassing at 50℃ and -0.1MPa for 20-40min, coating the obtained product onto the surface of the curtain base fabric with a doctor blade gap of 1mm and a coating speed of 3m / min, and heating at 100℃ for 3h to obtain the sound-insulating and heat-insulating dual-effect curtain fabric coating.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the bamboo chopsticks in the filler are activated with zinc chloride and treated with a high-temperature nitrogen atmosphere to form a porous structure, which enables sound waves to undergo multiple reflections and refractions inside the pores. The additives are made from waste feathers, which are modified by grafting maleic anhydride and then compounded with zinc stearate and microcrystalline wax. The compounding of powder and additives further enhances the surface properties of the powder and strengthens the bonding force with the matrix, ensuring that the porous structure is not completely filled by resin and fails during processing. The hollow glass microspheres in the filler can combine with the resin matrix, and locally resonate, scatter, and dissipate sound wave energy. The presence of additives makes the bonding strength between the filler and the matrix interface moderate and uniform, ensuring that sound waves are reflected and scattered at the interface. The above synergistic effects improve the sound insulation performance of the coating.
[0016] 2. In this invention, the microporous structure formed by the activation and carbonization of the powder further reduces the solid-phase heat transfer efficiency due to the air inside. The hollow glass microspheres in the intermediate material form a gas phase thermal resistance unit with their closed air cavities, which prolongs the heat conduction path. The two constitute a double thermal resistance barrier. At the same time, the additives improve the interfacial compatibility between the filler and the resin matrix, so that the thermal barrier function of the filler can be fully utilized. The above synergistic effect also improves the thermal insulation performance of the coating. Attached Figure Description
[0017] Figure 1 The present invention provides a flowchart of a sound-insulating and heat-insulating dual-effect curtain fabric coating and its preparation method. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0019] It should be noted that the raw materials used in the following embodiments are all commercially available. Example 1:
[0020] Raw material preparation for sound insulation and heat insulation dual-effect curtain fabric coating: 50 parts epoxy resin, 18 parts curing agent, 4 parts diluent, 28 parts filler, 0.8 parts antioxidant and 2 parts flame retardant; The raw material preparation for the filler includes nano silica, intermediate material, powder, anhydrous ethanol, hexamethyldisilazane, additives and triethylamine; The raw material preparation for the powder includes discarded bamboo chopsticks, zinc chloride solution, and additives; The raw materials for the additive include cashew phenol, epichlorohydrin, benzyltriethylammonium chloride, and ethyl acetate.
[0021] Preparation of the filler: Nano-silica, intermediate material, powder and anhydrous ethanol were mixed in a mass ratio of 0.2:0.6:1:10 and stirred at 200 rpm for 15 min. 5% by mass of hexamethyldisilazane was added to the nano-silica and stirred at 300 rpm for 30 min. Additives and triethylamine were added and stirred at 30℃ and 300 rpm for 10 min. The temperature was raised to 70℃ and stirred at 100 rpm for 2 h. The mixture was filtered to obtain the first filter residue, washed, and vacuum dried at 60℃ for 8 h to obtain the filler. The mass ratio of powder, additives and triethylamine was 10:2:0.03.
[0022] Preparation of intermediate material: Anhydrous ethanol, deionized water and silane coupling agent KH-570 were mixed and stirred at 200 rpm for 5 min. Hollow glass microspheres were added and stirred at 200 rpm for 2 h. After filtration, the second filter residue was collected, washed, and dried at 60℃ for 4 h to obtain the intermediate material. The mass ratio of anhydrous ethanol, deionized water, silane coupling agent KH-570 and hollow glass microspheres was 6:3:0.02:1.5.
[0023] Preparation of powder: Take cleaned and dried waste bamboo chopsticks, crush them, pass them through a 100-mesh sieve to obtain bamboo powder, add zinc chloride solution, stir at 100 rpm for 12 hours, filter, take the third filter residue, wash and dry, then heat to 350℃ at 5℃ / min under nitrogen protection, keep at the temperature for 1 hour, wash and dry to obtain coarse material, add additives, heat at -0.1MPa and 75℃ for 1 hour, cool, crush and pass through a 300-mesh sieve to obtain powder. The mass ratio of bamboo powder to zinc chloride solution is 1:2, the mass concentration of zinc chloride solution is 30%, and the mass ratio of coarse material to additives is 1:0.8.
[0024] Preparation of the additive: Waste feathers were washed, dried, and pulverized through a 200-mesh sieve to obtain feather powder. The feather powder was mixed with maleic anhydride, and benzoyl peroxide was added. The mixture was stirred for 3 hours at 100 rpm and 80°C under sealed conditions. After washing and drying, a mixture was obtained. The mixture, zinc stearate, and microcrystalline wax were mixed and stirred for 30 minutes at 80°C and 200 rpm. After cooling, the mixture was pulverized through a 300-mesh sieve to obtain the additive. The mass ratio of feather powder to maleic anhydride was 1:0.4, the mass of benzoyl peroxide was 1% of the mass of feather powder, and the mass ratio of the mixture, zinc stearate, and microcrystalline wax was 3:1:1.
[0025] Preparation of the additive: Epichlorohydrin was added to cashew phenol and mixed at 200 rpm for 20 min. Benzyltriethylammonium chloride was added and stirred at 60 °C and 200 rpm for 4 h to obtain a mixed product. Ethyl acetate was added at 40 °C and allowed to stand for 10 min. The supernatant was collected, washed, and distilled at -0.08 MPa and 50 °C for 1 h to obtain the additive. The mass ratio of cashew phenol to epichlorohydrin was 1:0.8, and the mass of benzyltriethylammonium chloride was 1% of the mass of cashew phenol.
[0026] The epoxy resin is epoxy resin E51, the curing agent is polyetheramine D230, the diluent is benzyl alcohol, the flame retardant is triphenyl phosphate, and the antioxidant is antioxidant 1010.
[0027] Preparation of sound-insulating and heat-insulating dual-effect curtain fabric coating: Take epoxy resin, diluent, antioxidant and flame retardant as needed and mix them. Stir for 10 min at 40℃ and 400 rpm. Add filler and continue stirring for 20 min. Add curing agent and stir for 5 min at 200 rpm. Then vacuum degas for 20 min at 50℃ and -0.1 MPa. Apply the resulting product to the surface of the curtain base fabric with a doctor blade gap of 1 mm and a coating speed of 3 m / min. Heat at 100℃ for 3 h to obtain the sound-insulating and heat-insulating dual-effect curtain fabric coating. Example 2:
[0028] Raw material preparation for sound insulation and heat insulation dual-effect curtain fabric coating: 55 parts epoxy resin, 20 parts curing agent, 5 parts diluent, 30 parts filler, 1 part antioxidant and 3 parts flame retardant. The raw material preparation for the filler includes nano silica, intermediate material, powder, anhydrous ethanol, hexamethyldisilazane, additives and triethylamine; The raw material preparation for the powder includes discarded bamboo chopsticks, zinc chloride solution, and additives; The raw materials for the additive include cashew phenol, epichlorohydrin, benzyltriethylammonium chloride, and ethyl acetate.
[0029] Preparation of the packing material: Nano-silica, intermediate material, powder and anhydrous ethanol were mixed at a mass ratio of 0.25:0.8:1:11 and stirred at 250 rpm for 20 min. 10% of the mass of nano-silica in hexamethyldisilazane was added and stirred at 350 rpm for 35 min. Additives and triethylamine were added and stirred at 35℃ and 350 rpm for 12 min. The temperature was raised to 80℃ and stirred at 150 rpm for 3 h. The mixture was filtered to obtain the first filter residue, washed, and vacuum dried at 70℃ for 10 h to obtain the packing material. The mass ratio of powder, additives and triethylamine was 10:3:0.04.
[0030] Preparation of intermediate material: Anhydrous ethanol, deionized water and silane coupling agent KH-570 were mixed and stirred at 250 rpm for 7 min. Hollow glass microspheres were added and stirred at 250 rpm for 3 h. After filtration, the second filter residue was collected, washed, and dried at 70℃ for 5 h to obtain the intermediate material. The mass ratio of anhydrous ethanol, deionized water, silane coupling agent KH-570 and hollow glass microspheres was 6:3:0.02:1.5.
[0031] Preparation of powder: Take cleaned and dried waste bamboo chopsticks, crush them, pass them through a 150-mesh sieve to obtain bamboo powder, add zinc chloride solution, stir at 150 rpm for 14 hours, filter, take the third filter residue, wash and dry, then heat to 400℃ at 5℃ / min under nitrogen protection, keep at the temperature for 2 hours, wash and dry to obtain coarse material, add additives, heat at -0.1MPa and 80℃ for 1.5 hours, cool, crush and pass through a 300-mesh sieve to obtain powder. The mass ratio of bamboo powder to zinc chloride solution is 1:3, the mass concentration of zinc chloride solution is 30%, and the mass ratio of coarse material to additives is 1:1.
[0032] Preparation of the additive: Waste feathers were washed, dried, and pulverized through a 200-mesh sieve to obtain feather powder. The feather powder was mixed with maleic anhydride, and benzoyl peroxide was added. The mixture was stirred for 4 hours at 150 rpm and 85°C under sealed conditions. After washing and drying, a mixture was obtained. The mixture, zinc stearate, and microcrystalline wax were mixed and stirred for 40 minutes at 85°C and 250 rpm. After cooling, the mixture was pulverized through a 300-mesh sieve to obtain the additive. The mass ratio of feather powder to maleic anhydride was 1:0.5, the mass of benzoyl peroxide was 1.5% of the mass of feather powder, and the mass ratio of the mixture, zinc stearate, and microcrystalline wax was 3:1:1.
[0033] Preparation of the additive: Epichlorohydrin was added to cashew phenol and mixed at 250 rpm for 25 min. Benzyltriethylammonium chloride was added and stirred at 70 °C and 250 rpm for 5 h to obtain a mixed product. Ethyl acetate was added at 45 °C and allowed to stand for 15 min. The supernatant was collected, washed, and distilled at -0.08 MPa and 55 °C for 2 h to obtain the additive. The mass ratio of cashew phenol to epichlorohydrin was 1:1, and the mass of benzyltriethylammonium chloride was 2% of the mass of cashew phenol.
[0034] The epoxy resin is epoxy resin E51, the curing agent is polyetheramine D230, the diluent is benzyl alcohol, the flame retardant is triphenyl phosphate, and the antioxidant is antioxidant 1010.
[0035] Preparation of sound-insulating and heat-insulating dual-effect curtain fabric coating: Take epoxy resin, diluent, antioxidant and flame retardant as needed and mix them. Stir at 50℃ and 450rpm for 15min. Add filler and continue stirring for 25min. Add curing agent and stir at 250rpm for 7min. Then vacuum degas at 50℃ and -0.1MPa for 30min. Apply the resulting product to the surface of the curtain base fabric with a doctor blade gap of 1mm and a coating speed of 3m / min. Heat at 100℃ for 3h to obtain the sound-insulating and heat-insulating dual-effect curtain fabric coating. Example 3:
[0036] Raw material preparation for sound insulation and heat insulation dual-effect curtain fabric coating: 60 parts epoxy resin, 20 parts curing agent, 6 parts diluent, 32 parts filler, 1.2 parts antioxidant and 4 parts flame retardant; The raw material preparation for the filler includes nano silica, intermediate material, powder, anhydrous ethanol, hexamethyldisilazane, additives and triethylamine; The raw material preparation for the powder includes discarded bamboo chopsticks, zinc chloride solution, and additives; The raw materials for the additive include cashew phenol, epichlorohydrin, benzyltriethylammonium chloride, and ethyl acetate.
[0037] Preparation of the filler: Nano-silica, intermediate material, powder and anhydrous ethanol were mixed at a mass ratio of 0.3:1:1:12 and stirred at 300 rpm for 25 min. 15% of the mass of hexamethyldisilazane of nano-silica was added and stirred at 400 rpm for 40 min. Additives and triethylamine were added and stirred at 40℃ and 400 rpm for 15 min. The temperature was raised to 90℃ and stirred at 200 rpm for 4 h. The mixture was filtered to obtain the first filter residue, washed, and vacuum dried at 80℃ for 12 h to obtain the filler. The mass ratio of powder, additives and triethylamine was 10:4:0.05.
[0038] Preparation of intermediate material: Anhydrous ethanol, deionized water and silane coupling agent KH-570 were mixed and stirred at 300 rpm for 10 min. Hollow glass microspheres were added and stirred at 300 rpm for 4 h. After filtration, the second filter residue was collected, washed, and dried at 80℃ for 6 h to obtain the intermediate material. The mass ratio of anhydrous ethanol, deionized water, silane coupling agent KH-570 and hollow glass microspheres was 6:3:0.02:1.5.
[0039] Preparation of powder: Take cleaned and dried waste bamboo chopsticks, crush them, pass them through a 200-mesh sieve to obtain bamboo powder, add zinc chloride solution, stir at 200 rpm for 16 h, filter, take the third filter residue, wash and dry, then heat to 450℃ at 5℃ / min under nitrogen protection, keep at the temperature for 3 h, wash and dry to obtain coarse material, add additives, heat at -0.1 MPa and 85℃ for 2 h, cool, crush and pass through a 300-mesh sieve to obtain powder. The mass ratio of bamboo powder to zinc chloride solution is 1:4, the mass concentration of zinc chloride solution is 30%, and the mass ratio of coarse material to additives is 1:1.2.
[0040] Preparation of the additive: Waste feathers were washed, dried, and pulverized through a 200-mesh sieve to obtain feather powder. The feather powder was mixed with maleic anhydride, and benzoyl peroxide was added. The mixture was stirred for 5 hours under closed conditions at 200 rpm and 90°C. After washing and drying, a mixture was obtained. The mixture, zinc stearate, and microcrystalline wax were mixed and stirred for 50 minutes at 90°C and 300 rpm. After cooling, the mixture was pulverized through a 300-mesh sieve to obtain the additive. The mass ratio of feather powder to maleic anhydride was 1:0.6, the mass of benzoyl peroxide was 2% of the mass of feather powder, and the mass ratio of the mixture, zinc stearate, and microcrystalline wax was 3:1:1.
[0041] Preparation of the additive: Epichlorohydrin was added to cashew nut shells and mixed at 300 rpm for 30 min. Benzyltriethylammonium chloride was added and stirred at 80 °C and 300 rpm for 6 h to obtain a mixed product. Ethyl acetate was added at 50 °C and allowed to stand for 20 min. The supernatant was collected, washed, and distilled at -0.08 MPa and 60 °C for 3 h to obtain the additive. The mass ratio of cashew nut shells to epichlorohydrin was 1:1.2, and the mass of benzyltriethylammonium chloride was 3% of the mass of cashew nut shells.
[0042] The epoxy resin is epoxy resin E51, the curing agent is polyetheramine D230, the diluent is benzyl alcohol, the flame retardant is triphenyl phosphate, and the antioxidant is antioxidant 1010.
[0043] Preparation of sound-insulating and heat-insulating dual-effect curtain fabric coating: Take epoxy resin, diluent, antioxidant and flame retardant as needed and mix them. Stir at 60℃ and 500rpm for 20min. Add filler and continue stirring for 30min. Add curing agent and stir at 300rpm for 10min. Then vacuum degas at 50℃ and -0.1MPa for 40min. Apply the resulting product to the surface of the curtain base fabric with a doctor blade gap of 1mm and a coating speed of 3m / min. Heat at 100℃ for 3h to obtain the sound-insulating and heat-insulating dual-effect curtain fabric coating.
[0044] Comparative Example 1: The difference between this comparative example and Example 1 is that this comparative example does not contain fillers.
[0045] Comparative Example 2 differs from Example 1 in that it does not contain powder.
[0046] Comparative Example 3: The difference between this comparative example and Example 1 is that this comparative example does not contain any additives.
[0047] Performance testing: Performance tests were conducted on the curtain fabrics treated in Examples 1-3 and Comparative Examples 1-3, and the test data are recorded in the table below: Table 1
[0048] In the performance test, the sound insulation performance is tested according to GB / T33620-2017. The higher the sound absorption coefficient at the same frequency, the better the sound insulation performance. The heat insulation performance is tested according to GB / T10294-2008. The lower the thermal conductivity, the better the heat insulation performance.
[0049] Among them, the sound insulation and heat insulation performance of the curtain fabric film after treatment in Comparative Examples 1-3 were lower than those in Examples 1-3, which illustrates the importance of fillers. The additives are made from waste feathers, which are modified by grafting maleic anhydride and then compounded with zinc stearate and microcrystalline wax to improve the surface characteristics and dispersibility of the powder. The powder is derived from waste bamboo chopsticks and is activated by zinc chloride and treated in a high-temperature nitrogen atmosphere to form a carbon material with micropores and specific pore structures. This structure gives it adsorption and lightweight properties. A large number of closed micropores contain still air. Air is a poor conductor of heat. Its absence leads to a reduction in gas phase units and an increase in solid phase paths for heat conduction, thus increasing the thermal conductivity and decreasing the heat insulation performance. Therefore, the heat insulation performance of Comparative Example 2, which lacks powder, is reduced. From the perspective of sound insulation mechanism, sound waves consume energy during propagation to push air molecules into and out of these micropores. The absence of the filler weakens this microporous energy dissipation mechanism, making it easier for sound waves to penetrate the material. Therefore, the thermal and sound insulation performance of Comparative Example 2 also decreases. The additive is a modified substance obtained by reacting cashew phenol with epichlorohydrin. Although it does not directly provide the physical structure for sound and heat insulation, it can improve the interfacial compatibility between the filler and the resin matrix. When the additive is missing, the filler is prone to agglomeration in the resin, resulting in uneven dispersion and difficulty in exerting its thermal barrier function. The presence of the additive makes the interfacial bonding strength moderate and uniform, and also ensures that sound waves are reflected and scattered at the interface. Therefore, the sound and heat insulation performance of Comparative Example 3, which lacks the additive, also decreases slightly. Moreover, when the powder is missing, there is a lack of this high specific surface area, low density porous medium to fill and connect the nano-silica in the filler and the hollow glass microspheres. Therefore, the performance of Comparative Example 1, which lacks the entire filler, decreases significantly.
[0050] By comparing and analyzing the relevant data in the table, it can be seen that the sound-insulating and heat-insulating dual-effect curtain fabric coating of the present invention not only has good sound insulation performance, but also excellent heat insulation performance. This indicates that the sound-insulating and heat-insulating dual-effect curtain fabric coating provided by the present invention has a broader market prospect and is more suitable for promotion.
[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0052] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A sound-insulating and heat-insulating dual-effect curtain fabric coating, characterized in that, The raw materials include the following parts by weight: 50-60 parts epoxy resin, 18-20 parts curing agent, 4-6 parts diluent, 28-32 parts filler, 0.8-1.2 parts antioxidant and 2-4 parts flame retardant; The raw materials for the filler include nano-silica, intermediate materials, powder, anhydrous ethanol, hexamethyldisilazane, additives, and triethylamine; The raw materials for the powder include discarded bamboo chopsticks, zinc chloride solution, and additives; The additives are made from cashew phenol, epichlorohydrin, benzyltriethylammonium chloride and ethyl acetate.
2. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 1, characterized in that, The packing material is prepared by the following method: nano-silica, intermediate material, powder and anhydrous ethanol are mixed and stirred at 200-300 rpm for 15-25 min, hexamethyldisilazane is added and stirred at 300-400 rpm for 30-40 min, additives and triethylamine are added and stirred at 30-40℃ and 300-400 rpm for 10-15 min, the temperature is raised to 70-90℃ and stirred at 100-200 rpm for 2-4 h, filtered to obtain the first filter residue, washed and vacuum dried at 60-80℃ for 8-12 h to obtain the packing material.
3. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 2, characterized in that, The mass ratio of nano-silica, intermediate material, powder and anhydrous ethanol is (0.2-0.3):(0.6-1):1:(10-12), the mass of hexamethyldisilazane is 5-15% of the mass of nano-silica, and the mass ratio of powder, additive and triethylamine is 10:(2-4):(0.03-0.05).
4. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 1, characterized in that, The intermediate material is prepared by the following method: anhydrous ethanol and deionized water are mixed, silane coupling agent KH-570 is added, and the mixture is stirred at 200-300 rpm for 5-10 min. Hollow glass microspheres are added, and the mixture is stirred at 200-300 rpm for 2-4 h. The mixture is filtered, the second filter residue is taken, washed, and dried at 60-80℃ for 4-6 h to obtain the intermediate material. The mass ratio of anhydrous ethanol, deionized water, silane coupling agent KH-570, and hollow glass microspheres is 6:3:0.02:1.
5.
5. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 1, characterized in that, The powder is prepared by the following method: waste bamboo chopsticks are washed and dried, crushed and passed through a 100-200 mesh sieve to obtain bamboo powder. The bamboo powder and zinc chloride solution are mixed at a mass ratio of 1:(2-4), stirred at 100-200 rpm for 12-16 hours, filtered, and the third filter residue is taken, washed and dried. Then, under nitrogen protection, the temperature is raised to 350-450℃ at 5℃ / min and kept at that temperature for 1-3 hours. After washing and drying, coarse material is obtained. Additives are added, and the mixture is heated at -0.1MPa and 75-85℃ for 1-2 hours. After cooling, the mixture is crushed and passed through a 300 mesh sieve to obtain the powder.
6. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 5, characterized in that, The zinc chloride solution has a mass concentration of 30%, and the mass ratio of crude material to additive is 1:(0.8-1.2).
7. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 2, characterized in that, The additive is prepared by the following method: waste feathers are washed, dried, and pulverized through a 200-mesh sieve to obtain feather powder. The feather powder is mixed with maleic anhydride at a mass ratio of 1:(0.4-0.6). Benzoyl peroxide at 1-2% of the mass of the feather powder is added. The mixture is stirred for 3-5 hours under closed conditions at 100-200 rpm and 80-90℃. The mixture is washed and dried to obtain a mixture. The mixture, zinc stearate, and microcrystalline wax are mixed at a mass ratio of 3:1:
1. The mixture is stirred for 30-50 minutes under conditions at 80-90℃ and 200-300 rpm. The mixture is cooled and pulverized through a 300-mesh sieve to obtain the additive.
8. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 1, characterized in that, The additive is prepared by the following method: cashew phenol and epichlorohydrin are mixed at a mass ratio of 1:(0.8-1.2) and mixed at 200-300 rpm for 20-30 min. 1-3% of benzyltriethylammonium chloride by mass of cashew phenol is added, and the mixture is stirred at 60-80℃ and 200-300 rpm for 4-6 h to obtain a mixed product. Ethyl acetate is added at 40-50℃, and the mixture is allowed to stand for 10-20 min. The supernatant is taken, washed, and distilled at -0.08 MPa and 50-60℃ for 1-3 h to obtain the additive.
9. The sound-insulating and heat-insulating dual-effect curtain fabric coating according to claim 1, characterized in that, The epoxy resin is epoxy resin E51, the curing agent is polyetheramine D230, the diluent is benzyl alcohol, the flame retardant is triphenyl phosphate, and the antioxidant is antioxidant 1010.
10. The method for preparing a sound-insulating and heat-insulating dual-effect curtain fabric coating according to any one of claims 1-9, characterized in that, Includes the following steps: Mix epoxy resin, diluent, antioxidant, and flame retardant as needed, and stir for 10-20 minutes at 40-60℃ and 400-500rpm. Add filler and continue stirring for 20-30 minutes. Add curing agent and stir for 5-10 minutes at 200-300rpm. Then, vacuum degas for 20-40 minutes at 50℃ and -0.1MPa. Apply the resulting product to the surface of the curtain base fabric with a doctor blade gap of 1mm and a coating speed of 3m / min. Heat at 100℃ for 3 hours to obtain a sound-insulating and heat-insulating dual-effect curtain fabric coating.