CN115028993A - Light sustainable-emission far infrared composite material and preparation method thereof - Google Patents
Light sustainable-emission far infrared composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a preparation method of a light sustainable-emitting far infrared composite material, which comprises the following steps: (1) mixing 30-50 parts of tourmaline, 20-30 parts of medical stone, 3-5 parts of yttrium oxide and 2-5 parts of cerium carbonate in parts by weight, synthesizing composite ceramic powder by adopting a high-temperature solid-phase reaction method, and uniformly mixing the composite ceramic powder with 30-50 parts of hollow glass microspheres to prepare modified composite ceramic powder; (2) modifying the modified composite ceramic powder with a silane coupling agent to obtain chemically modified composite ceramic powder; (3) according to parts by weight, 70-90 parts of polymer resin, 10-20 parts of chemically modified composite ceramic powder, 1-2 parts of antioxidant and 1-2 parts of lubricant are mixed, the mixed raw materials are extruded, granulated and dried, and finally the light sustainable emission far infrared composite material is obtained. The composite material has high far infrared emissivity, and the emitted wavelength is matched with the wavelength of far infrared light absorbed by a human body.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and relates to a sustainable far infrared emission composite material and a preparation method thereof.
Background
The wavelength range of infrared ray is very wide, people refer to electromagnetic waves with different wavelength ranges as near infrared ray, middle infrared ray and far infrared ray, and the wavelength range of the far infrared ray is 6000-15000 nanometers, because the far infrared ray is close to the vibration frequency of cell molecules in a human body, after the far infrared ray permeates into the human body, atoms and molecules of human cells can resonate, and through resonance absorption, the molecules generate heat through friction and heat reaction, so that the temperature of subcutaneous deep layers is increased, micro blood vessels are expanded, blood circulation is accelerated, blood vessel deposits and harmful substances in the body are favorably cleared, the obstacle hindering metabolism is cleared, tissues are reactivated, enzyme generation is promoted, and the purposes of activating tissue cells, preventing aging and strengthening an immune system are achieved.
The far infrared ray can promote blood circulation, and the eye frame made of far infrared material and polymer material can promote blood circulation and metabolism around eyes, so as to enhance self-recovery and regulation ability of eyes. In the plastic material for manufacturing the spectacle frame in the current market, although far infrared light can be radiated by the plastic material, the wavelength of the far infrared light is inconsistent with that of the far infrared light absorbed by a human body, the self-recovery and adjustment capability of the far infrared composite material to eyes is influenced, and meanwhile, the spectacle frame is high in quality, the wearing comfort is influenced, and fatigue is easy to generate due to the addition of a large amount of inorganic filler. Therefore, it is highly desirable to develop a light-weight sustainable far infrared composite material that emits far infrared light having a wavelength consistent with that of far infrared light absorbed by the human body and has a light-weight characteristic.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a light sustainable emission far infrared composite material and a preparation method thereof, the composite material is prepared by composite modified ceramic powder, and the composite modified ceramic powder is mixed with polymer resin to realize that the wavelength emitted by the composite material is consistent with the wavelength of far infrared light absorbed by human body, and the composite material has light weight property.
The invention provides a light sustainable emission far infrared composite material, which is prepared by multi-component compounding modification and then multi-component blending with polymer resin.
The specific technical scheme of the invention is as follows:
a preparation method of a light sustainable-emitting far infrared composite material comprises the following steps:
(1) mixing 30-50 parts of tourmaline, 20-30 parts of medical stone, 3-5 parts of yttrium oxide and 2-5 parts of cerium carbonate in parts by weight, synthesizing composite ceramic powder by adopting a high-temperature solid-phase reaction method, and uniformly mixing the composite ceramic powder with 30-50 parts of hollow glass microspheres to prepare modified composite ceramic powder;
(2) modifying the modified composite ceramic powder with a silane coupling agent to obtain chemically modified composite ceramic powder;
(3) according to the weight parts, 70-90 parts of polymer resin, 10-20 parts of chemically modified composite ceramic powder, 1-2 parts of antioxidant and 1-2 parts of lubricant are mixed, the mixed raw materials are extruded, and the mixture is granulated and dried to finally obtain the light sustainable emission far infrared composite material.
Preferably, the preparation of the chemically modified composite ceramic powder of step (2): dispersing the modified composite ceramic powder in a solvent A to form a uniform dispersion liquid, adjusting the pH to 4-5, adding a silane coupling agent into a solvent B to stir and dissolve the silane coupling agent, adding the silane coupling agent into the dispersion liquid, reacting for 6-24h at the temperature of 25-70 ℃, cooling, washing and drying to obtain the chemically modified composite ceramic powder.
Preferably, the mass ratio of the modified composite ceramic powder in the step (2) to the solvent A is 0.5-1: 100, respectively; the mass ratio of the silane coupling agent to the modified composite ceramic powder is 5-10: 100, respectively; the mass ratio of the solvent B to the silane coupling agent is 100: 10-20.
Preferably, the solvent A in the step (2) is ethanol and/or methanol, and the solvent B is ethanol and/or methanol.
Preferably, the silane coupling agent is one or two of gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
Preferably, the dispersing conditions in step (2) are: ultrasonic dispersion is carried out for 0.5-2 h; the drying conditions were: under the pressure of-0.1 MPa and the temperature of 40-60 MPa o And C, drying for 24-48 h.
Preferably, the polymer resin in the step (3) is one or two of nylon 12 and nylon 6.
Preferably, the antioxidant is one or more of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, dilauryl thiodipropionate and tris (2, 4-di-tert-butylphenyl) phosphite.
Preferably, the lubricant is one or two of ethylene bis stearamide and white oil.
Preferably, the mixing conditions in the step (3) are that the raw materials are uniformly mixed in a high-speed mixer, the mixing speed is 35-50 r/min, and the mixing time is 35-50 min.
Preferably, the extrusion conditions in the step (3) are that the temperature of the extruder is 220-260 ℃, the extrusion speed is controlled at 80-120r/min, and the main feeding speed is controlled at 8-10r/min in a double-screw extruder.
Preferably, the preparation of the composite ceramic powder in the step (1): fully grinding the raw materials to uniformly mix the raw materials, and then calcining the raw materials at the temperature of 1200-1400 ℃, wherein the gas atmosphere is H with the volume content of 10-20 percent 2 With 80-90% of N 2 Mixing the gas, calcining for 4-8h, and cooling after calcining, and grinding into powder.
Compared with the prior art, the invention has the following beneficial effects:
(1) the chemical modified composite ceramic powder is prepared by multi-component compounding and coupling agent modification, and then is subjected to multi-component blending with polymer resin to prepare the sustainable emission far infrared composite material, the maximum far infrared emissivity in the wavelength range of 8-14 mu m is 0.91, the composite material has higher far infrared emissivity, the emitted wavelength is matched with the wavelength of far infrared light absorbed by a human body, the spectral density ratio is 73.2% in the wavelength range of 9-10 mu m, and according to the matching absorption theory, the far infrared light emitted by the sustainable emission far infrared composite material can be easily absorbed by skin around eyes, so that the blood circulation and metabolism around the eyes are promoted, and the self-recovery and regulation capability of the eyes are enhanced.
(2) Surface grafting modification is carried out on the modified composite ceramic powder through coupling agent modification, and the modified composite ceramic powder and polymer resin are subjected to copolymerizationAfter mixing, the interface compatibility between the composite modified ceramic powder and the polymer is improved, so that the prepared sustainable emission far infrared composite material has excellent mechanical property, the maximum tensile strength is 72MPa, and the maximum impact strength is 22kJ/m 2 The use requirement of the spectacle frame can be met, and the service life of the spectacle frame is prolonged.
(3) The introduction of the hollow glass beads improves the far infrared emissivity of the composite material, and reduces the density of the composite material, wherein the density is 1.19-1.26g/cm 3 The light weight is realized, and the comfort of the spectacle frame is improved.
(4) In the sustainable far infrared emission composite material, the multi-component synergistic effect of the modified composite ceramic powder, the antioxidant and other auxiliaries enables the composite material to age for one year under natural conditions, and the far infrared emissivity and the mechanical property retention rate are more than 97%.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto, and may be carried out with reference to conventional techniques for process parameters not particularly noted.
Example 1
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 50g of tourmaline, 30g of medical stone, 5g of yttrium oxide and 5g of cerium carbonate. Mixing all the raw materials, placing in an agate mortar, adding 10g of ethanol, and fully grinding for more than 60min to uniformly mix. Then the mixture was placed in a crucible and calcined in a tube furnace at 1400 ℃. The gas atmosphere is H with the volume content of 20 percent 2 And 80% of N 2 The mixed gas and the calcining time are 8 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 50g of hollow glass microspheres to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in 1000g of ethanol, performing ultrasonic treatment for 2h to form uniform dispersion liquid, adjusting the pH to 5 by using hydrochloric acid, and adding 1g of gamma-aminopropyltriethoxysilane into 10g of ethanol to enable the gamma-aminopropyltriethoxysilane to be in an amount of 10g of ethanolStirring to dissolve, adding into the above dispersion at 70 o And reacting for 6 hours under the condition of C. And cooling to room temperature, centrifugally washing for 5 times by deionized water, and removing the unreacted coupling agent. Under the pressure of-0.1 MPa and the temperature of 60 DEG C o And C, drying for 48 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Composite material capable of continuously emitting far infrared ray
90g of nylon 12 resin, 20g of chemically modified composite ceramic powder, 2g of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 2g of ethylene bis stearamide. Mixing in high-speed mixer. The mixing speed is 50r/min, and the mixing time is 50 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 260 ℃, the extrusion speed is controlled at 120r/min, and the main feeding speed is controlled at 10 r/min. And (4) granulating and drying by adopting a conventional granulating process to finally obtain the sustainable emission far infrared composite material.
Example 2
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 30g of tourmaline, 20g of medical stone, 3g of yttrium oxide and 2g of cerium carbonate. Mixing all the raw materials, placing in an agate mortar, adding 5g of ethanol, and fully grinding for more than 30min to uniformly mix. Then the mixture was placed in a crucible and calcined in a tube furnace at a calcination temperature of 1200 ℃. The gas atmosphere is H with the volume content of 10 percent 2 And 90% of N 2 The mixed gas and the calcining time are 4 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 30g of hollow glass microspheres to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in 2000g of methanol, performing ultrasonic treatment for 0.5h to form a uniform dispersion, adjusting the pH to 4 with hydrochloric acid, adding 0.5g of gamma-glycidoxypropyltrimethoxysilane to 2.5g of methanol, stirring to dissolve, adding into the above dispersion, and adding into the above dispersion at 25% o And reacting for 24 hours under the condition of C. And cooling to room temperature, centrifugally washing for 3 times by deionized water, and removing the unreacted coupling agent. Under a pressure of-0.1 MPa and a temperature of40 o And C, drying for 24 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Sustainable far infrared emission composite material
70g of nylon 12 resin, 10g of chemically modified ceramic powder, 1g of dilauryl thiodipropionate and 1g of white oil. Mixing in high-speed mixer. The mixing speed was 35r/min and the mixing time was 35 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 220 ℃, the extrusion speed is controlled at 80r/min, and the main feeding speed is controlled at 8 r/min. And granulating and drying by adopting a conventional granulating process to finally obtain the sustainable emission far infrared composite material.
Example 3
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 50g of tourmaline, 30g of medical stone, 5g of yttrium oxide and 5g of cerium carbonate. Mixing all the raw materials, placing in an agate mortar, adding 10g of ethanol, and fully grinding for more than 60min to uniformly mix. Then the mixture was placed in a crucible and calcined in a tube furnace at 1400 ℃. The gas atmosphere is H with the volume content of 20 percent 2 And 80% of N 2 The mixed gas and the calcining time are 8 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 50g of hollow glass microspheres to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in 1000g of ethanol, performing ultrasonic treatment for 2h to form uniform dispersion liquid, adjusting the pH to 5 by using hydrochloric acid, adding 1g of gamma-aminopropyltriethoxysilane into 10g of ethanol, stirring, dissolving, adding into the dispersion liquid, and dissolving at 70 DEG o And C, reacting for 6 hours. And cooling to room temperature, centrifugally washing for 5 times by deionized water, and removing the unreacted coupling agent. Under the pressure of-0.1 MPa and the temperature of 60 DEG C o And C, drying for 48 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Sustainable far infrared emission composite material
90g of nylon 12 resin, 15g of chemically modified composite ceramic powder, 2g of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 2g of ethylene bis stearamide. Mixing in high-speed mixer. The mixing speed is 50r/min, and the mixing time is 50 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 260 ℃, the extrusion speed is controlled at 120r/min, and the main feeding speed is controlled at 10 r/min. And granulating and drying by adopting a conventional granulating process to finally obtain the sustainable emission far infrared composite material.
Example 4
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 50g of tourmaline, 30g of medical stone, 5g of yttrium oxide and 5g of cerium carbonate. Mixing all the raw materials, placing in an agate mortar, adding 10g of ethanol, and fully grinding for more than 60min to uniformly mix. Then the mixture was placed in a crucible and calcined in a tube furnace at 1400 ℃. The gas atmosphere is H with the volume content of 20 percent 2 And 80% of N 2 The mixed gas and the calcining time are 8 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 50g of hollow glass microspheres to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in 1000g of ethanol, performing ultrasonic treatment for 2h to form uniform dispersion liquid, adjusting the pH to 5 by using hydrochloric acid, adding 1g of gamma-aminopropyltriethoxysilane into 10g of ethanol, stirring, dissolving, adding into the dispersion liquid, and dissolving at 70 DEG o And reacting for 6 hours under the condition of C. And cooling to room temperature, centrifugally washing for 5 times by deionized water, and removing the unreacted coupling agent. Under the pressure of-0.1 MPa and the temperature of 60 DEG C o And C, drying for 48 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Sustainable far infrared emission composite material
90g of nylon 6 resin, 10g of chemically modified composite ceramic powder, 2g of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 2g of ethylene bis stearamide. Mixing in high-speed mixer. The mixing speed is 50r/min, and the mixing time is 50 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 260 ℃, the extrusion speed is controlled at 120r/min, and the main feeding speed is controlled at 10 r/min. And granulating and drying by adopting a conventional granulating process to finally obtain the sustainable emission far infrared composite material.
Example 5
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 40g of tourmaline, 25g of medical stone, 4g of yttrium oxide and 3.5g of cerium carbonate. All the raw materials are mixed and then placed in an agate mortar, 5g of ethanol is added, and the mixture is fully ground for more than 45min to be uniformly mixed. Then the mixture was calcined in a crucible in a tube furnace at 1300 ℃. The gas atmosphere is H with the volume content of 10 percent 2 And 90% of N 2 The calcination time of the mixed gas is 6 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 40g of hollow glass microspheres to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in ethanol, performing ultrasonic treatment for 1h to form uniform dispersion liquid, adjusting the pH to 4 by using hydrochloric acid, adding 1g of gamma-aminopropyltriethoxysilane into 10g of ethanol, stirring, dissolving, adding into the dispersion liquid, and adding into the mixture at a temperature of 50 DEG o And C, reacting for 12 hours. And cooling to room temperature, centrifugally washing for 4 times by deionized water, and removing unreacted coupling agent. Under a pressure of-0.1 MPa and a temperature of 50 DEG C o And C, drying for 36 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Sustainable far infrared emission composite material
80g of nylon 6 resin, 15g of chemically modified ceramic powder, 1.5g of tris (2, 4-di-tert-butylphenyl) phosphite and 1.5g of white oil. Mixing in high-speed mixer. The mixing speed is 40r/min, and the mixing time is 40 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 240 ℃, the extrusion speed is controlled at 100r/min, and the main feeding speed is controlled at 9 r/min. And granulating and drying by adopting a conventional granulating process to finally obtain the sustainable emission far infrared composite material.
Comparative example 1
90g of nylon 12 resin, 2g of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 2g of ethylene bis stearamide. Mixing in high-speed mixer. The mixing speed is 50r/min, and the mixing time is 50 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 260 ℃, the extrusion speed is controlled at 120r/min, and the main feeding speed is controlled at 10 r/min. And (4) granulating and drying by adopting a conventional granulating process to finally obtain a comparative sample 1.
Comparative example 2
(1) Modified composite ceramic powder
The composite ceramic powder is synthesized by adopting a high-temperature solid-phase reaction method, which comprises the following steps: 50g of tourmaline, 30g of medical stone, 5g of yttrium oxide and 5g of cerium carbonate. All raw materials are weighed according to the stoichiometric ratio. Then placing the mixture into an agate mortar, adding 10g of ethanol, and fully grinding for more than 60min to uniformly mix the mixture. Then the mixture was placed in a crucible and calcined in a tube furnace at 1400 ℃. The gas atmosphere is H with the volume content of 20 percent 2 And 80% of N 2 The mixed gas and the calcining time are 8 h. And after the calcination is finished and the temperature is cooled to room temperature, grinding the mixture into powder, and uniformly mixing the powder with 50g of glass micro powder to obtain the modified composite ceramic powder.
(2) Chemically modified composite ceramic powder
Dispersing 10g of modified composite ceramic powder in 1000g of ethanol, performing ultrasonic treatment for 2h to form uniform dispersion liquid, adjusting the pH to 5 by using hydrochloric acid, adding 1g of gamma-aminopropyltriethoxysilane into 10g of ethanol, stirring, dissolving, adding into the dispersion liquid, and dissolving at 70 DEG o And C, reacting for 6 hours. And cooling to room temperature, centrifugally washing for 5 times by deionized water, and removing the unreacted coupling agent. Under the pressure of-0.1 MPa and the temperature of 60 DEG C o And C, drying for 48 hours under the condition of C to obtain the chemically modified composite ceramic powder.
(3) Sustainable far infrared emission composite material
90g of nylon 12 resin, 20g of chemically modified composite ceramic powder, 2g of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 2g of ethylene bis stearamide. Mixing in high-speed mixer. The mixing speed is 50r/min, and the mixing time is 50 min. The mixed raw materials are added into a cylinder of a double-screw extruder. The temperature range of the extruder is 260 ℃, the extrusion speed is controlled at 120r/min, and the main feeding speed is controlled at 10 r/min. And granulating and drying by adopting a conventional granulating process to finally obtain a comparative sample 2.
And (3) performance testing:
the tensile strength test is carried out according to the GB/T1040-2018 standard; the notch impact strength test is carried out according to the GB/T1843-2008 standard; the far infrared emissivity test is executed according to the GB/T30127-2013 standard, and the far infrared emissivity is the ratio of the far infrared emission intensity of the test sample to the far infrared emission intensity of a standard black board; the spectral density ratio is calculated according to the test result of far infrared emissivity, namely the ratio of the area of a far infrared emissivity curve in a region of 9-10 mu m to the area of a far infrared emissivity curve in a region of 8-14 mu m; the density test is carried out according to GB/T1463-2005; the natural condition aging test refers to GB/T3681-2000. The test results are shown in the following table 1, and in the example 1, the hollow glass beads are adopted to replace the glass micro powder in the comparative example 2, so that the density of the composite material is reduced, and the light weight is realized; meanwhile, the mechanical property and far infrared emissivity of the composite material are improved. As can be seen from Table 2, the far infrared emissivity and the mechanical property retention rate of the composite material in the embodiment 1 are more than 97% after the composite material is aged for one year under natural conditions; the far infrared emissivity and the mechanical properties of comparative examples 1 and 2 are remarkably reduced.
TABLE 1 sustainable emission far infrared composite material performance
TABLE 2 ageing property of sustainable far infrared emission composite material
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A preparation method of a light sustainable-emitting far infrared composite material is characterized by comprising the following steps:
(1) mixing 30-50 parts of tourmaline, 20-30 parts of medical stone, 3-5 parts of yttrium oxide and 2-5 parts of cerium carbonate in parts by weight, synthesizing composite ceramic powder by adopting a high-temperature solid-phase reaction method, and uniformly mixing the composite ceramic powder with 30-50 parts of hollow glass microspheres to prepare modified composite ceramic powder;
(2) modifying the modified composite ceramic powder with a silane coupling agent to obtain chemically modified composite ceramic powder;
(3) according to the weight parts, 70-90 parts of polymer resin, 10-20 parts of chemically modified composite ceramic powder, 1-2 parts of antioxidant and 1-2 parts of lubricant are mixed, the mixed raw materials are extruded, and the mixture is granulated and dried to finally obtain the light sustainable emission far infrared composite material.
2. The method for preparing the chemically modified composite ceramic powder according to claim 1, wherein the step (2) of preparing the chemically modified composite ceramic powder comprises: dispersing the modified composite ceramic powder in a solvent A to form a uniform dispersion liquid, adjusting the pH to 4-5, adding a silane coupling agent into a solvent B to stir and dissolve the silane coupling agent, adding the silane coupling agent into the dispersion liquid, reacting for 6-24h at the temperature of 25-70 ℃, cooling, washing and drying to obtain the chemically modified composite ceramic powder.
3. The preparation method according to claim 2, wherein the mass ratio of the modified composite ceramic powder in the step (2) to the solvent A is 0.5-1: 100, respectively; the mass ratio of the silane coupling agent to the modified composite ceramic powder is 5-10: 100, respectively; the mass ratio of the solvent B to the silane coupling agent is 100: 10-20.
4. The method according to claim 3, wherein the solvent A in the step (2) is ethanol and/or methanol, and the solvent B is ethanol and/or methanol;
the silane coupling agent is one or two of gamma-aminopropyl triethoxysilane and gamma-glycidoxypropyl trimethoxysilane.
5. The method according to claim 4, wherein the dispersion conditions in step (2) are as follows: ultrasonic dispersion is carried out for 0.5-2 h; the drying conditions were: under the pressure of-0.1 MPa and the temperature of 40-60 MPa o And C, drying for 24-48 h.
6. The preparation method according to any one of claims 1 to 5, wherein the polymer resin in the step (3) is one or two of nylon 12 and nylon 6;
the antioxidant is one or more than two of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, dilauryl thiodipropionate and tris (2, 4-di-tert-butylphenyl) phosphite;
the lubricant is one or two of ethylene bis stearamide and white oil.
7. The preparation method according to any one of claims 1 to 5, wherein the mixing conditions in the step (3) are uniform mixing in a high-speed mixer, the mixing speed is 35 to 50r/min, and the mixing time is 35 to 50 min.
8. The preparation method according to any one of claims 1 to 5, wherein the extrusion conditions in the step (3) are that the temperature of the extruder is 220 to 260 ℃, the extrusion speed is controlled to be 80 to 120r/min, and the main feeding speed is controlled to be 8 to 10r/min in a double-screw extruder.
9. The production method according to any one of claims 1 to 5, characterized in that the production of the composite ceramic powder of step (1): fully grinding the raw materials to uniformly mix the raw materials, and then calcining the raw materials at the temperature of 1200-1400 ℃, wherein the gas atmosphere is H with the volume content of 10-20 percent 2 With 80-90% of N 2 Mixing the gas, calcining for 4-8h, and grinding into powder after the calcination is finished and the gas is cooled.
10. The light sustainable-emission far-infrared composite material prepared by the method of any one of claims 1 to 9.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102276978A (en) * | 2011-06-28 | 2011-12-14 | 江苏金发科技新材料有限公司 | Lightweight noise-reducing modified nylon material and preparation method thereof |
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