CN113278280A - Nylon heat insulation strip for bridge-cut-off aluminum door and window and production process thereof - Google Patents
Nylon heat insulation strip for bridge-cut-off aluminum door and window and production process thereof Download PDFInfo
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- CN113278280A CN113278280A CN202110580177.3A CN202110580177A CN113278280A CN 113278280 A CN113278280 A CN 113278280A CN 202110580177 A CN202110580177 A CN 202110580177A CN 113278280 A CN113278280 A CN 113278280A
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a nylon heat insulation strip for a bridge-cut-off aluminum door and window, belonging to the technical field of heat insulation strip preparation, and comprising the following raw materials in parts by weight: 80-100 parts of nylon resin, 10-15 parts of epoxy resin, 5-15 parts of glass fiber, 1-4 parts of hollow glass microsphere, 5-8 parts of modified potassium hexatitanate whisker, 3-5 parts of auxiliary agent, 1-5 parts of compatilizer, 1-3 parts of dispersant and 1 part of lubricant; the invention also discloses a production process of the nylon heat insulation strip for the bridge-cut-off aluminum door and window, which comprises the steps of uniformly mixing the raw materials of the components, transferring the mixture into a double-screw extruder, carrying out melt extrusion granulation at the extrusion temperature of 200-.
Description
Technical Field
The invention belongs to the technical field of heat insulation strip preparation, and particularly relates to a nylon heat insulation strip for a bridge cut-off aluminum door and window and a production process thereof.
Background
The sealing between the glass and the door and window is vital to the airtight heat insulation effect of the aluminum alloy window, the performance of the used heat insulation sealing strip directly influences the quality of the aluminum alloy, and the heat insulation sealing strip is not only a 'broken bridge' on a heat transfer path in the aluminum profile and reduces the transfer of heat at the aluminum profile part, but also is a structural connecting piece of the aluminum profiles on two sides in the heat insulation profile.
The heat insulating strip is used as a connecting part in a door and window profile, plays a role in mechanical transmission in doors and windows of aluminum alloy profiles and steel profiles, has low heat conduction performance by taking nylon and glass fiber as raw materials, has a heat conduction coefficient of 0.3W/(m.K), is close to that of the aluminum alloy profiles, so that the size change of the aluminum alloy and the heat insulating strip is basically consistent when the aluminum alloy doors and windows with the heat insulating strip are heated or in cold weather, and the heat insulating strip penetrates into the aluminum alloy profiles, so that the heat insulating strip and the aluminum alloy profiles can always keep good associativity, and the aluminum alloy profile and the steel profile have good heat insulating, sound insulating, energy saving and dustproof effects.
In the existing aluminum alloy energy-saving door and window and curtain wall structure, the sealing performance between the heat insulation strip and the building energy-saving heat insulation aluminum profile is not very good, after the aluminum alloy energy-saving door and window and curtain wall structure are used for a period of time, the strength is obviously reduced, the dust resistance and the waterproof property are reduced, dust and moisture easily enter the space between the heat insulation strip and the aluminum profile, and the heat insulation performance is influenced.
Disclosure of Invention
The invention aims to provide a nylon heat insulation strip for a bridge-cut-off aluminum door and window and a production process thereof.
The technical problems to be solved by the invention are as follows:
in the prior art, the heat insulation strip has single performance and does not have flame retardant, aging resistant and waterproof performances, and due to the addition of too many inorganic particles, the uniformity of the material of the polymer is poor, and the polymer is easy to become brittle and break in the use process.
The purpose of the invention can be realized by the following technical scheme:
a nylon heat insulation strip for bridge-cut-off aluminum doors and windows comprises the following raw materials in parts by weight: 80-100 parts of nylon resin, 10-15 parts of epoxy resin, 5-15 parts of glass fiber, 1-4 parts of hollow glass microsphere, 5-8 parts of modified potassium hexatitanate whisker, 3-5 parts of auxiliary agent, 1-5 parts of compatilizer, 1-3 parts of dispersant and 1 part of lubricant;
the nylon heat insulation strip for the bridge-cut-off aluminum door and window is prepared by the following steps:
firstly, adding nylon resin, epoxy resin, a compatilizer and a dispersing agent into a high-speed mixer, stirring for 20-30min at the rotation speed of 600-;
and secondly, adding an auxiliary agent and a lubricant into the base material, stirring for 30-40min under the condition of the rotation speed of 200-.
Further, the auxiliary agent is prepared by the following steps:
step 1, adding cyanuric chloride and acetone into a three-neck flask, controlling the reaction temperature to be 0-7 ℃, dropwise adding a solvent a consisting of trimethyl phosphite and acetone into the three-neck flask, continuously reacting for 2 hours at constant temperature after dropwise adding, and after the reaction is finished, adding acetone and a byproduct CH3Rotating and steaming Cl to obtain an intermediate 1;
the reaction process is as follows:
step 2, adding 4-hydroxy-4-methyldiphenylamine and toluene into a three-neck flask, stirring for 5-8min, dropwise adding the toluene solution of the intermediate 1 into the three-neck flask at 45 ℃ by using a constant-pressure dropping funnel, stirring while dropwise adding, controlling the dropwise adding speed to be 1 drop/second, after the dropwise adding is finished, heating to 80-100 ℃, reacting for 6-10h, collecting tail gas by using a sodium hydroxide solution, after the reaction is finished, washing and filtering a reaction product by using absolute ethyl alcohol, and drying in a 60 ℃ oven to constant weight to obtain an intermediate 2;
the reaction process is as follows:
and 3, adding the intermediate 2 into organic solvent benzene, adding potassium permanganate, heating to 55-58 ℃, stirring for reaction for 28-32min, filtering after the reaction is finished, collecting filtrate to obtain an intermediate 3, transferring the intermediate 3 into a round-bottom flask, adding hexafluoroisopropanol into the round-bottom flask, stirring for 3-5min, dropwise adding a sulfuric acid solution with the mass fraction of 95% under the condition of the rotation speed of 100 plus materials and 200r/min, stirring for reaction for 2-3h under the condition of the temperature of 80-90 ℃, extracting with ethyl acetate after the reaction is finished, and performing rotary evaporation for 25min under the temperature of 77-82 ℃ in a rotary evaporator to obtain the auxiliary agent.
The reaction process is as follows:
further, the dosage ratio of the cyanuric chloride to the acetone to the solvent a in the step 1 is 0.05 mol: 35-38 mL: 10mL, wherein the solvent a is trimethyl phosphite and acetone according to the molar ratio of 0.05-0.06 mol: 10mL of the above-mentioned components were mixed.
Further, the amount ratio of the toluene solution of 4-hydroxy-4-methyldiphenylamine, toluene and intermediate 1 in step 2 was 0.05 mol: 30-40 mL: 10-12mL of a toluene solution of intermediate 1 was prepared from intermediate 1 and toluene in a molar ratio of 0.05 mol: 10mL of the above-mentioned components were mixed.
Further, in the step 3, the dosage ratio of the intermediate 2, benzene and potassium permanganate is 0.05 mol: 50-58 mL: 0.15 g; the dosage ratio of the intermediate 3, the hexafluoroisopropanol and the sulfuric acid solution is 55 mL: 0.05 mol: 0.5-0.8 mL.
Further, the modified potassium hexatitanate whisker is prepared by the following steps:
adding the potassium hexatitanate whisker, water and absolute ethyl alcohol into a reaction kettle, mixing for 5-8min at the rotating speed of 60-100r/min, adding a solvent b into the reaction kettle, stirring and reacting for 2h at the rotating speed of 100-150r/min at the temperature of 60 ℃, filtering after the reaction is finished, washing a filter cake for 3-5 times by using the absolute ethyl alcohol, and drying to constant weight to obtain the modified potassium hexatitanate whisker.
Further, the dosage ratio of the potassium hexatitanate whisker to the water to the absolute ethyl alcohol is 5-8 g: 2mL of: 30 mL.
Further, the preparation process of the solvent b comprises the following steps: mixing a coupling agent KH-560 and deionized water according to a volume ratio of 1: 10, adding glacial acetic acid into a reaction kettle, adjusting the pH value to 1.5, stirring and hydrolyzing for 1h under the condition of the rotating speed of 60-80r/min, and obtaining a solvent b.
Further, the dosage of the coupling agent KH-560 is 3-5% of the mass of the potassium hexatitanate whiskers.
Further, the compatilizer is one or two of maleic anhydride grafted polyethylene, maleic anhydride grafted polyolefin elastomer, maleic anhydride grafted polypropylene and maleic anhydride grafted acrylonitrile-butadiene-styrene copolymer which are mixed according to any proportion.
Further, the dispersing agent is one of vinyl bis stearamide, glyceryl tristearate, calcium stearate and polyethylene glycol.
Further, the lubricant is one of calcium stearate, oxidized polyethylene wax, stearic acid and glyceryl stearate.
Further, the production process of the nylon heat insulation strip for the bridge-cut-off aluminum door and window specifically comprises the following steps:
firstly, adding nylon resin, epoxy resin, a compatilizer and a dispersing agent into a high-speed mixer, stirring for 20-30min at the rotation speed of 600-;
and secondly, adding an auxiliary agent and a lubricant into the base material, stirring for 30-40min under the condition of the rotation speed of 200-.
The invention has the beneficial effects that:
the invention takes nylon resin and epoxy resin as base materials, and adds fiber, inorganic particles and auxiliary agents to prepare the flame-retardant, aging-resistant and waterproof heat insulation strip, the heat insulation strip has excellent heat insulation effect, long service life, excellent nylon toughness, good mechanical property and heat resistance, the toughness of the nylon heat insulation strip can be improved by adding glass fiber, and the nylon resin and the epoxy resin can be subjected to cross-linking reaction to further improve the toughness of the resin, the invention also adds the auxiliary agents into the raw materials, firstly uses cyanuric chloride and trimethyl phosphite as raw materials, uses acetone as solvent, obtains an intermediate 1 through substitution reaction, uses the intermediate 1 and 4-hydroxy-4-methyldiphenylamine as raw materials, obtains an intermediate 2 through substitution reaction, and then under the oxidation action of potassium permanganate, oxidizing a terminal methyl group on a benzene ring of the intermediate 2 into a carboxyl group to obtain an intermediate 3, carrying out esterification reaction on the intermediate 3 containing-COOH and hexafluoroisopropanol containing-OH under the catalytic action of concentrated sulfuric acid to obtain an auxiliary agent, wherein the auxiliary agent contains a triazine ring structure and a phosphate group, when the heat insulation strip is combusted, P ═ O and P-O-C bonds are decomposed to generate phosphoric acid, metaphosphoric acid, polymetaphosphoric acid and derivatives thereof, the phosphoric acid, the polymetaphosphoric acid and the derivatives are liquid viscous glassy substances and cover and wrap the surface of a combustion polymer, combustible substances below the surface layer can not contact oxygen and flame in the air, so that the flame retardant effect of oxygen insulation and heat insulation is achieved, the existence of the triazine ring and the benzene ring in the auxiliary agent can improve the char forming performance of the auxiliary agent, on the other hand, the auxiliary agent contains a diphenylamine structure and can capture free radicals and improve the aging resistance of the nylon heat insulation strip, the assistant contains a plurality of F-C chains, the introduction of the fluorine-containing group can improve the hydrophobicity and the rain erosion resistance of the heat insulating strip, and the fluorine-containing group has a skin effect and migrates to the surface of a high molecular material in the process of processing and forming the heat insulating strip to better and more quickly play roles in flame retardance, oxidation resistance and corrosion resistance Aging resistance and waterproof performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The auxiliary agent is prepared by the following steps:
step 1, adding 0.05mol of cyanuric chloride and 35mL of acetone into a three-neck flask, controlling the reaction temperature to be 0 ℃, dropwise adding 10mL of solvent a consisting of trimethyl phosphite and acetone into the three-neck flask, continuously reacting for 2 hours at constant temperature after dropwise adding, and after the reaction is finished, adding acetone and a byproduct CH3Rotating and steaming Cl to obtain an intermediate 1;
step 2, adding 0.05mol of 4-hydroxy-4-methyldiphenylamine and 30mL of toluene into a three-neck flask, stirring for 5min, dropwise adding 10mL of toluene solution of the intermediate 1 into the three-neck flask at 45 ℃ by using a constant-pressure dropping funnel, stirring while dropwise adding, controlling the dropwise adding speed to be 1 drop/second, after the dropwise adding is finished, heating to 80 ℃, reacting for 6h, collecting tail gas by using a sodium hydroxide solution, after the reaction is finished, washing and filtering a reaction product by using absolute ethyl alcohol, and drying in a 60 ℃ oven to constant weight to obtain an intermediate 2;
and 3, adding 0.05mol of the intermediate 2 into 50mL of organic solvent benzene, then adding 0.15g of potassium permanganate, heating to 55 ℃, stirring for reacting for 28min, after the reaction is finished, filtering, collecting filtrate to obtain an intermediate 3, then transferring 55mL of the intermediate 3 into a round-bottom flask, adding 0.05mol of hexafluoroisopropanol into the round-bottom flask, stirring for 3min, dropwise adding 0.5mL of sulfuric acid solution with the mass fraction of 95% under the condition of the rotation speed of 100r/min, stirring for reacting for 2h at the temperature of 80 ℃, after the reaction is finished, extracting with ethyl acetate, and then carrying out rotary evaporation for 25min at the temperature of 77 ℃ in a rotary evaporator to obtain the auxiliary agent.
Example 2
The auxiliary agent is prepared by the following steps:
step 1, adding 0.05mol of cyanuric chloride and 37mL of acetone into a three-neck flask, controlling the reaction temperature to be 5 ℃, dropwise adding 10mL of solvent a consisting of trimethyl phosphite and acetone into the three-neck flask, continuously reacting for 2 hours at constant temperature after dropwise adding, and after the reaction is finished, adding acetone and a byproduct CH3Rotating and steaming Cl to obtain an intermediate 1;
step 2, adding 0.05mol of 4-hydroxy-4-methyldiphenylamine and 35mL of toluene into a three-neck flask, stirring for 7min, dropwise adding 11mL of toluene solution of the intermediate 1 into the three-neck flask at 45 ℃ by using a constant-pressure dropping funnel, stirring while dropwise adding, controlling the dropwise adding speed to be 1 drop/second, after the dropwise adding is finished, heating to 90 ℃, reacting for 8h, collecting tail gas by using a sodium hydroxide solution, after the reaction is finished, washing and filtering a reaction product by using absolute ethyl alcohol, and drying in a 60 ℃ oven to constant weight to obtain an intermediate 2;
and 3, adding 0.05mol of the intermediate 2 into 55mL of organic solvent benzene, then adding 0.15g of potassium permanganate, heating to 57 ℃, stirring for reaction for 30min, after the reaction is finished, filtering, collecting filtrate to obtain an intermediate 3, then transferring 55mL of the intermediate 3 into a round-bottom flask, adding 0.05mol of hexafluoroisopropanol into the round-bottom flask, stirring for 4min, dropwise adding 0.7mL of sulfuric acid solution with the mass fraction of 95% under the condition of the rotation speed of 150r/min, stirring for reaction for 2.5h under the condition of the temperature of 85 ℃, after the reaction is finished, extracting with ethyl acetate, and then carrying out rotary evaporation for 25min under the temperature of 80 ℃ in a rotary evaporator to obtain the auxiliary agent.
Example 3
The auxiliary agent is prepared by the following steps:
step 1, 0.05mol of cyanuric chloride and 38mL of acetone are added to trisIn a flask with a mouth, controlling the reaction temperature to be 7 ℃, dropwise adding 10mL of solvent a consisting of trimethyl phosphite and acetone into a three-mouth flask, continuously reacting for 2 hours at constant temperature after dropwise adding, and after the reaction is finished, adding acetone and a byproduct CH3Rotating and steaming Cl to obtain an intermediate 1;
step 2, adding 0.05mol of 4-hydroxy-4-methyldiphenylamine and 40mL of toluene into a three-neck flask, stirring for 8min, dropwise adding 12mL of toluene solution of the intermediate 1 into the three-neck flask at 45 ℃ by using a constant-pressure dropping funnel, stirring while dropwise adding, controlling the dropwise adding speed to be 1 drop/second, after the dropwise adding is finished, heating to 100 ℃, reacting for 10h, collecting tail gas by using a sodium hydroxide solution, after the reaction is finished, washing and filtering a reaction product by using absolute ethyl alcohol, and drying in a 60 ℃ oven to constant weight to obtain an intermediate 2;
and 3, adding 0.05mol of the intermediate 2 into 58mL of organic solvent benzene, then adding 0.15g of potassium permanganate, heating to 58 ℃, stirring for reacting for 32min, after the reaction is finished, filtering, collecting filtrate to obtain an intermediate 3, then transferring 55mL of the intermediate 3 into a round-bottom flask, adding 0.05mol of hexafluoroisopropanol into the round-bottom flask, stirring for 5min, dropwise adding 0.8mL of sulfuric acid solution with the mass fraction of 95% under the condition of the rotation speed of 200r/min, stirring for reacting for 3h under the condition of the temperature of 90 ℃, after the reaction is finished, extracting with ethyl acetate, and then carrying out rotary evaporation for 25min under the temperature of 82 ℃ in a rotary evaporator to obtain the auxiliary agent.
Example 4
The modified potassium hexatitanate whisker is prepared by the following steps:
mixing potassium hexatitanate whisker, water and absolute ethyl alcohol according to the weight ratio of 5 g: 2mL of: adding 30mL of the solution into a reaction kettle, mixing for 5min at a rotation speed of 60r/min, adding a solvent b into the reaction kettle, stirring at a rotation speed of 100r/min at 60 ℃ for reaction for 2h, after the reaction is finished, performing suction filtration, washing a filter cake for 3 times by using absolute ethyl alcohol, and drying to constant weight to obtain the modified potassium hexatitanate whisker.
Wherein the preparation process of the solvent b is as follows: mixing a coupling agent KH-560 and deionized water according to a volume ratio of 1: 10 adding into a reaction kettle, adding glacial acetic acid to adjust the pH value to 1.5, stirring at the rotating speed of 60r/min for hydrolysis for 1h to obtain a solvent b, wherein the dosage of the coupling agent KH-560 is 3 percent of the mass of the potassium hexatitanate whiskers
Example 5
The modified potassium hexatitanate whisker is prepared by the following steps:
mixing potassium hexatitanate whisker, water and absolute ethyl alcohol according to the weight ratio of 7 g: 2mL of: adding 30mL of the solution into a reaction kettle, mixing for 7min at a rotating speed of 80r/min, adding a solvent b into the reaction kettle, stirring at a rotating speed of 120r/min at 60 ℃ for reaction for 2h, after the reaction is finished, performing suction filtration, washing a filter cake for 4 times by using absolute ethyl alcohol, and drying to constant weight to obtain the modified potassium hexatitanate whisker.
Wherein the preparation process of the solvent b is as follows: mixing a coupling agent KH-560 and deionized water according to a volume ratio of 1: 10, adding glacial acetic acid into a reaction kettle, adjusting the pH value to 1.5, stirring at the rotating speed of 70r/min and hydrolyzing for 1h to obtain a solvent b, wherein the dosage of the coupling agent KH-560 is 4 percent of the mass of the potassium hexatitanate whiskers.
Example 6
The modified potassium hexatitanate whisker is prepared by the following steps:
mixing potassium hexatitanate whisker, water and absolute ethyl alcohol according to the weight ratio of 8 g: 2mL of: adding 30mL of the solution into a reaction kettle, mixing for 8min at a rotation speed of 100r/min, adding a solvent b into the reaction kettle, stirring at a rotation speed of 150r/min at 60 ℃ for reaction for 2h, after the reaction is finished, performing suction filtration, washing a filter cake for 5 times by using absolute ethyl alcohol, and drying to constant weight to obtain the modified potassium hexatitanate whisker.
Wherein the preparation process of the solvent b is as follows: mixing a coupling agent KH-560 and deionized water according to a volume ratio of 1: 10, adding glacial acetic acid into a reaction kettle, adjusting the pH value to 1.5, stirring at the rotating speed of 80r/min, and hydrolyzing for 1h to obtain a solvent b, wherein the dosage of the coupling agent KH-560 is 5% of the mass of the potassium hexatitanate whiskers.
Example 7
A nylon heat insulation strip for bridge-cut-off aluminum doors and windows comprises the following raw materials in parts by weight: 80 parts of nylon resin, 10 parts of epoxy resin, 5 parts of glass fiber, 1 part of hollow glass microsphere, 5 parts of modified potassium hexatitanate whisker in example 4, 3 parts of auxiliary agent in example 1, 1 part of maleic anhydride grafted polyethylene and 1 part of calcium stearate;
the nylon heat insulation strip for the bridge-cut-off aluminum door and window is prepared by the following steps:
firstly, adding nylon resin, epoxy resin, maleic anhydride grafted polyethylene and vinyl bis stearamide into a high-speed mixer, stirring for 20min at the rotating speed of 600r/min, then adding glass fiber, hollow glass beads and the modified potassium hexatitanate whisker in the embodiment 4, keeping the rotating speed unchanged, and stirring for 30min to obtain a base material;
and secondly, adding the auxiliary agent and calcium stearate in the embodiment 1 into the base material, stirring for 30min at the rotation speed of 200r/min to obtain a mixture, transferring the mixture into a double-screw extruder, performing melt extrusion granulation at the extrusion temperature of 200 ℃ and the extrusion rotation speed of 180r/min, drying, and performing extrusion molding to obtain the nylon heat-insulating strip for the bridge-cut-off aluminum door and window.
Example 8
A nylon heat insulation strip for bridge-cut-off aluminum doors and windows comprises the following raw materials in parts by weight: 90 parts of nylon resin, 12 parts of epoxy resin, 10 parts of glass fiber, 2 parts of hollow glass microsphere, 7 parts of modified potassium hexatitanate whisker in example 5, 4 parts of auxiliary agent in example 2, 3 parts of maleic anhydride grafted polyethylene and 1 part of calcium stearate;
the nylon heat insulation strip for the bridge-cut-off aluminum door and window is prepared by the following steps:
firstly, adding nylon resin, epoxy resin, maleic anhydride grafted polyethylene and vinyl bis stearamide into a high-speed mixer, stirring for 25min at the rotating speed of 650r/min, then adding glass fiber, hollow glass beads and the modified potassium hexatitanate whisker in the embodiment 5, keeping the rotating speed unchanged, and stirring for 30min to obtain a base material;
and secondly, adding the auxiliary agent and calcium stearate in the embodiment 2 into the base material, stirring for 35min at the rotation speed of 250r/min to obtain a mixture, transferring the mixture into a double-screw extruder, performing melt extrusion granulation at the extrusion temperature of 210 ℃ and the extrusion rotation speed of 190r/min, drying, and performing extrusion molding to obtain the nylon heat-insulating strip for the bridge-cut-off aluminum door and window.
Example 9
A nylon heat insulation strip for bridge-cut-off aluminum doors and windows comprises the following raw materials in parts by weight: 100 parts of nylon resin, 15 parts of epoxy resin, 15 parts of glass fiber, 4 parts of hollow glass microsphere, 8 parts of modified potassium hexatitanate whisker in example 6, 5 parts of auxiliary agent in example 3, 5 parts of maleic anhydride grafted polyethylene and 1 part of calcium stearate;
the nylon heat insulation strip for the bridge-cut-off aluminum door and window is prepared by the following steps:
firstly, adding nylon resin, epoxy resin, maleic anhydride grafted polyethylene and vinyl bis stearamide into a high-speed mixer, stirring for 30min at the rotating speed of 700r/min, then adding glass fiber, hollow glass beads and the modified potassium hexatitanate whisker in the embodiment 6, keeping the rotating speed unchanged, and stirring for 30min to obtain a base material;
and secondly, adding the auxiliary agent and calcium stearate in the embodiment 3 into the base material, stirring for 40min at the rotating speed of 300r/min to obtain a mixture, transferring the mixture into a double-screw extruder, performing melt extrusion granulation at the extrusion temperature of 220 ℃ and the extrusion rotating speed of 200r/min, drying, and performing extrusion molding to obtain the nylon heat-insulating strip for the bridge-cut-off aluminum door and window.
Comparative example 1
In comparison with example 7, in comparative example 1, the auxiliary agent in example 7 is removed, and the rest of the raw materials and the preparation process are unchanged.
Comparative example 2
In comparison with example 8, in comparative example 2, the modified potassium hexatitanate whisker in example 8 was removed, and the remaining raw materials and the preparation process were not changed.
Comparative example 3
The comparative example is a nylon heat insulation strip sold by corridor, Fenghai energy-saving technology Limited.
The thermal insulating strips of examples 7 to 9 and comparative examples 1 to 3 were subjected to performance tests, the measurement criteria being as follows: the tensile strength is measured according to the method GB/T1040.1-2018 'determination of tensile property of plastics', the thermal deformation temperature is measured according to the method GB/T1633-2000 'determination of Vicat softening point temperature of thermoplastic plastics', the thermal conductivity is measured according to the method GB/T3139-:
as can be seen from the above table, the test effect of the heat insulating strips of examples 7-9 is superior to that of comparative examples 1-3 in the test process of mechanical property, thermal deformation temperature, thermal conductivity, water resistance, aging resistance and flame retardance, and the heat insulating strips prepared by the invention not only have excellent mechanical property and heat insulating property, but also have excellent water resistance, aging resistance and flame retardance, and have great application value in aluminum alloy energy-saving doors, windows and curtain wall structures.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. The utility model provides a bridge cut-off is nylon heat insulating strip for aluminium door and window which characterized in that, includes the raw materials of following parts by weight: 80-100 parts of nylon resin, 10-15 parts of epoxy resin, 5-15 parts of glass fiber, 1-4 parts of hollow glass microsphere, 5-8 parts of modified potassium hexatitanate whisker, 3-5 parts of auxiliary agent, 1-5 parts of compatilizer, 1-3 parts of dispersant and 1 part of lubricant;
wherein, the auxiliary agent is prepared by the following steps:
step 1, adding cyanuric chloride and acetone into a three-neck flask, dropping a solvent a consisting of trimethyl phosphite and acetone at the temperature of 0-7 ℃, continuing to react for 2 hours after dropping, and performing rotary evaporation to obtain an intermediate 1;
step 2, adding 4-hydroxy-4-methyldiphenylamine and toluene into a three-neck flask, stirring for 5-8min, dropwise adding the toluene solution of the intermediate 1 into the three-neck flask at 45 ℃, stirring while dropwise adding, after dropwise adding, heating to 80-100 ℃, reacting for 6-10h, washing, filtering, and drying to obtain an intermediate 2;
and 3, adding the intermediate 2 into benzene, then adding potassium permanganate, heating to 55-58 ℃, stirring for reaction for 28-32min, filtering after the reaction is finished, collecting filtrate to obtain an intermediate 3, then transferring the intermediate 3 into a round-bottom flask, adding hexafluoroisopropanol into the round-bottom flask, stirring for 3-5min, dropwise adding a sulfuric acid solution with the mass fraction of 95%, stirring for reaction for 2-3h at the temperature of 80-90 ℃, extracting after the reaction is finished, and performing rotary evaporation to obtain the auxiliary agent.
2. The nylon heat insulation strip for the bridge-cut-off aluminum door and window as claimed in claim 1, wherein the dosage ratio of cyanuric chloride, acetone and solvent a in step 1 is 0.05 mol: 35-38 mL: 10mL, wherein the solvent a is trimethyl phosphite and acetone according to the molar ratio of 0.05-0.06 mol: 10mL of the above-mentioned components were mixed.
3. The nylon heat insulation strip for the bridge-cut-off aluminum doors and windows as claimed in claim 1, wherein the dosage ratio of the toluene solution of the 4-hydroxy-4-methyldiphenylamine, the toluene and the intermediate 1 in the step 2 is 0.05 mol: 30-40 mL: 10-12mL of a toluene solution of intermediate 1 was prepared from intermediate 1 and toluene in a molar ratio of 0.05 mol: 10mL of the above-mentioned components were mixed.
4. The nylon heat insulation strip for the bridge-cut-off aluminum door and window as claimed in claim 1, wherein the dosage ratio of the intermediate 2, benzene and potassium permanganate in the step 3 is 0.05 mol: 50-58 mL: 0.15 g; the dosage ratio of the intermediate 3, the hexafluoroisopropanol and the sulfuric acid solution is 55 mL: 0.05 mol: 0.5-0.8 mL.
5. The nylon heat insulation strip for the bridge-cut-off aluminum doors and windows according to claim 1, characterized in that the modified potassium hexatitanate whisker is prepared by the following steps:
adding potassium hexatitanate whiskers, water and absolute ethyl alcohol into a reaction kettle, mixing for 5-8min, adding a solvent b into the reaction kettle, stirring and reacting for 2h at 60 ℃, after the reaction is finished, performing suction filtration, washing and drying to obtain modified potassium hexatitanate whiskers, wherein the dosage ratio of the potassium hexatitanate whiskers to the water to the absolute ethyl alcohol is 5-8 g: 2mL of: 30 mL.
6. The nylon heat insulation strip for the bridge-cut-off aluminum door and window as claimed in claim 5, wherein the preparation process of the solvent b is as follows: mixing a coupling agent KH-560 and deionized water according to a volume ratio of 1: 10, adding glacial acetic acid into a reaction kettle, adjusting the pH value to 1.5, stirring and hydrolyzing for 1h under the condition of the rotating speed of 60-80r/min, and obtaining a solvent b.
7. The production process of the nylon heat insulation strip for the bridge-cut-off aluminum door and window as claimed in claim 1, which is characterized by comprising the following steps:
firstly, adding nylon resin, epoxy resin, a compatilizer and a dispersing agent into a high-speed mixer, stirring for 20-30min, then adding glass fiber, hollow glass microspheres and modified potassium hexatitanate whiskers, keeping the rotating speed unchanged, and stirring for 30min to obtain a base material;
and secondly, adding an auxiliary agent and a lubricant into the base material, stirring for 30-40min to obtain a mixture, transferring the mixture into a double-screw extruder, performing melt extrusion granulation at the extrusion temperature of 200-220 ℃ and the extrusion rotation speed of 180-200r/min, drying, and performing extrusion molding to obtain the nylon heat insulation strip for the bridge-cut aluminum door and window.
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| CN202110580177.3A CN113278280A (en) | 2021-05-26 | 2021-05-26 | Nylon heat insulation strip for bridge-cut-off aluminum door and window and production process thereof |
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| CN202110580177.3A CN113278280A (en) | 2021-05-26 | 2021-05-26 | Nylon heat insulation strip for bridge-cut-off aluminum door and window and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116751452A (en) * | 2023-07-31 | 2023-09-15 | 安徽优泰新材料有限公司 | Aging-resistant polyamide heat insulation strip material and preparation process thereof |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116751452A (en) * | 2023-07-31 | 2023-09-15 | 安徽优泰新材料有限公司 | Aging-resistant polyamide heat insulation strip material and preparation process thereof |
| CN116751452B (en) * | 2023-07-31 | 2024-01-16 | 安徽优泰新材料有限公司 | Aging-resistant polyamide heat insulation strip material and preparation process thereof |
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Application publication date: 20210820 |