CN115716965A - Preparation method of ivory-imitated material - Google Patents
Preparation method of ivory-imitated material Download PDFInfo
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- CN115716965A CN115716965A CN202110973206.2A CN202110973206A CN115716965A CN 115716965 A CN115716965 A CN 115716965A CN 202110973206 A CN202110973206 A CN 202110973206A CN 115716965 A CN115716965 A CN 115716965A
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Abstract
The invention relates to a preparation method of an ivory-imitating material, which adopts a blending and compounding method, selects a polymethyl methacrylate polymer matrix, compounds one or more of other polymers (including ASA, PC, nylon PA66 and PET), fillers (including one or more of hydroxyapatite, tricalcium phosphate, kaolin, montmorillonite, 6mm chopped glass fiber and 7mm chopped aramid fiber (PA 1313-7)), processing aids (including one or more of polyethylene wax, talcum powder, stearic acid and zinc stearate), colorants (one or more of zinc oxide, titanium dioxide, zirconium dioxide and lignin), prepares ivory-colored filaments and stripe-colored filaments by extrusion molding, then mixes and presses the two color number filaments to obtain the ivory-imitating material with ivory appearance, hand feeling and properties, and the density of the product is 1.25-1.5g/cm 3 The tensile strength is 30-60MPa, the bending strength is 60-120MPa, the pencil hardness is 2H-5H, the Young modulus is 0.5-3GPa, and the water absorption is 1-4%.
Description
Technical Field
The invention relates to the technical field of macromolecules, in particular to an ivory-imitating material and a preparation method thereof.
Background
Ivory is a milky (yellow) white, opaque object with various excellent characteristics, which is rare and rare. With the increasing living standard of people, various ivory products are more and more favored by people. The piano as a large luxury product uses ivory as a manufacturing raw material of the piano key, so that the piano can be added to high-grade pianos, and with the improvement of living standard and quality standard of people, the ivory-like material product with ivory texture and sweat absorption function is a main application field for manufacturing piano keys in the future. However, elephants are becoming a protected animal due to excessive slaughter, and ivory trading has been strictly prohibited internationally. The source of ivory is limited, so the research of the ivory-imitating material has good social benefit and wide application prospect.
The ivory-imitated material is prepared by an artificial method, has the characteristics similar to the ivory in the aspects of appearance, hand feeling, property and the like, and can replace the ivory to a certain extent. The common ivory-imitating materials include the following: 1) Artificial ivory, which is a polymer product synthesized by a chemical process and similar to ivory, and is commonly made of nitrocellulose plastic, phenolic resin, casein plastic, collagen composite materials, acrylic ester and the like; 2) Fish teeth imitation, which is imitated by teeth of large fish in the sea, such as dens aurita, dens porciniae, and the like; 3) Animal bone imitation, which is the treatment and imitation of the bones of the limbs of common animals such as pigs, sheep, cattle, horses and the like; 4) The animal horns are generally processed by goat horns, antelope horns, deer horns and the like; fruit of plants, e.g. palm, elaeagnus umbellata and Dumet palm [1-3] 。
For the preparation of pseudo ivory materials, more studies have been made in this respect in Japan. They mainly use protein, caprolactam, etc. to prepare ivory-like products; in China, the early ivory-imitating material mainly uses phenolic resin, and has the advantages of wide material source, low cost, perfect synthesis method and process and simple casting method. The ivory-imitating material with good mechanical property is prepared by changing the type and the dosage of the catalyst and the dosage of various auxiliary agents and taking phenol and formaldehyde as raw materials, and is popularized in China [4] . Thereafter, with the progress of the technology, researchers found that the cured products of unsaturated polyester resins and acrylate resins also had physicochemical properties similar to ivory and were easier than phenol resinsAnd (5) manufacturing and molding. Thereafter, the researchers prepared pseudo-ivory materials with excellent performance for decorative materials by copolymers of different acrylate monomers [5-6] . However, the products made of the prior ivory-like materials have certain defects, some products do not have good touch and moisture absorption, some products do not have good luster and texture, and some products do not have good mechanical properties [7-8] 。
Disclosure of Invention
The invention aims to solve the technical problem of providing an ivory-imitating material and a preparation method thereof aiming at the defects in the prior art.
One of the purposes of the invention is to provide a formula of an ivory-imitated material, which comprises the steps of taking polymethyl methacrylate as a substrate, compounding a toughening polymer, a filler, a processing aid and a coloring agent, preparing ivory-color filaments by extrusion molding, then taking a high-viscosity-flow-temperature polymer as the substrate, compounding the toughening polymer, the filler, the processing aid and the coloring agent, preparing stripe-color filaments by extrusion molding, mixing and pressing the two color-number filaments to obtain the ivory-imitated material with ivory appearance, hand feeling and properties, wherein the density of the product is 1.25-1.5g/cm 3 The tensile strength is 30-60MPa, the bending strength is 60-120MPa, the pencil hardness is 2H-5H, the Young modulus is 0.5-3GPa, and the water absorption is 1-4%.
According to the scheme, the basal body of the ivory color filament is polymethyl methacrylate (PMMA), and the dosage of the polymethyl methacrylate (PMMA) is 100 parts.
According to the scheme, the toughening polymers in the ivory color filaments and the stripe color filaments are acrylonitrile-styrene-acrylate terpolymer (ASA) with the dosage of 30-60 parts.
According to the scheme, the high viscous flow temperature polymer in the striped filament is one of PC, PA66 and PET. The dosage of the compound is 100 parts.
According to the scheme, the fillers in the ivory color filaments and the stripe color filaments are one or more of Hydroxyapatite (HAP), tricalcium phosphate, kaolin, montmorillonite, chopped glass fiber (GF-6) and aramid fiber (PA 1313-7). Preferably HAP and any other filler, such as HAP + tricalcium phosphate, or HAP + kaolin, or HAP + montmorillonite, or HAP + GF-6, or HAP + PA1313-7, wherein the amount of HAP is 10-30 parts, and the amount of other filler is 10-20 parts;
according to the scheme, the processing aids in the ivory color filaments and the stripe color filaments are one or more of polyethylene wax, talcum powder, stearic acid and zinc stearate. Preferably polyethylene wax, talcum powder, stearic acid and zinc stearate in an amount of 0.25-3 parts, more preferably polyethylene wax 2 parts, talcum powder 0.5 parts, stearic acid 0.5 parts and zinc stearate 0.5 parts;
according to the scheme, the coloring agents in the ivory color filaments and the stripe color filaments are one or more of zinc oxide, titanium dioxide, zirconium dioxide and lignin, preferably lignin and any other filler, such as lignin + zinc oxide, lignin + titanium dioxide or lignin + zirconium dioxide, the dosage of the lignin is 0.2-0.4 part, the dosage of the zinc oxide, the titanium dioxide or the zirconium dioxide is 4-8 parts, and the dosage of the lignin in the ivory color filament formula is lower than that in the stripe color filament formula by 0.1 part.
The invention also aims to provide a preparation method of the imitation ivory material, which comprises the following specific steps: the polymer, the filler, the processing aid and the colorant are blended and granulated, then are extruded and molded to prepare ivory-color filaments and stripe-color filaments with the diameters of 0.1-0.5mm, and then the two color-number filaments are randomly blended and pressed to prepare the ivory-imitating material.
According to the scheme, the blending conditions are as follows: blending by an internal mixer, wherein the processing temperature is as follows: 220 to 240 ℃; the rotating speed of the rotor is 30-50r/min, and the banburying time is 5-10min.
According to the scheme, the extrusion molding conditions are as follows: a homodromous meshing double-screw extruder with a circular neck mold with the diameter of 1 mm; a processing temperature interval: 220 ℃ to 260 ℃, preferably: 220 ℃,250 ℃,260 ℃,260 ℃; the rotating speed of the extruder is 30-60r/min, and the traction speed is 5-10m/min.
According to the scheme, the compression molding conditions are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, and the cold pressing time is 2min.
The invention has the beneficial effects that: 1. the ivory-imitated material prepared by the invention has the appearance similar to that of a real ivory, the surface is ivory white or slightly yellow, the glossiness is high, and the ivory-imitated material has grains similar to the 'schrager' line of the real ivory; 2. the ivory-imitated material prepared by the invention has the hand feeling similar to that of a real ivory material, and the density is 1.25-1.5g/cm 3 The water absorption rate is 1-4%; 3. the ivory-imitating material prepared by the invention has good mechanical property, the tensile strength is 30-60MPa, the bending strength is 60-120MPa, the pencil hardness is 2H-5H, and the Young modulus is 0.5-3GPa; 4. the preparation method provided by the invention has the advantages of simple steps, low cost, no toxic and harmful substances generated in the compounding process and the product, and no pollution to the environment.
Drawings
FIG. 1 is a schematic representation of the process route for preparing simulated ivory material according to the present invention;
FIG. 2 is a photograph of simulated ivory material prepared in examples 1,2,3,4, 5.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described in detail below with reference to examples.
The ivory-imitating material is prepared with polymer as base, composite stuffing, processing assistant and coloring agent, and through mixing, pelletizing and extruding to form ivory color filament and stripe color filament, mixing the two kinds of color filaments and pressing to form the ivory-imitating material with ivory appearance, hand feeling and property in the density of 1.25-1.5g/cm 3 The tensile strength is 30-60MPa, the bending strength is 60-120MPa, the pencil hardness is 2H-5H, the Young modulus is 0.5-3GPa, and the water absorption is 1-4%.
Preferably, the polymer matrix in the ivory-color filament is polymethyl methacrylate (PMMA) and the amount of the PMMA is 100 parts, and the ASA is toughening polymer and the amount of the ASA is 30-60 parts.
Preferably, the polymer matrix in the striation color filaments is one of PC, PA66 and PET, and the dosage of the polymer matrix is 100 parts. ASA is a toughening polymer, and the dosage of the ASA is 30-60 parts.
Preferably, the fillers in the ivory-color filaments and the striped-color filaments are one or more of Hydroxyapatite (HAP), tricalcium phosphate, kaolin, montmorillonite, GF-6 and PA 1313-7. Preferably HAP plus any other filler, such as HAP + tricalcium phosphate, or HAP + kaolin, or HAP + montmorillonite, or HAP + GF-6, or HAP + PA1313-7, wherein the amount of HAP is 10-30 parts and the amount of other filler is 10-20 parts.
Preferably, the processing aid in the ivory color filaments and the stripe color filaments is one or more of polyethylene wax, talcum powder, stearic acid and zinc stearate. Preferably polyethylene wax, talcum powder, stearic acid and zinc stearate, and the dosage of the polyethylene wax, the talcum powder, the stearic acid and the zinc stearate is 0.25-3 parts, more preferably the polyethylene wax, the talcum powder, the stearic acid and the zinc stearate are 2 parts, 0.5 part and 0.5 part respectively.
Preferably, the coloring agent in the ivory color filament and the stripe color filament is one or more of zinc oxide, titanium dioxide, zirconium dioxide and lignin, preferably lignin and any other filler, such as lignin + zinc oxide, or lignin + titanium dioxide, or lignin + zirconium dioxide, the amount of the lignin is 0.2-0.4 parts, the amount of the zinc oxide, or titanium dioxide, or zirconium dioxide is 4-8 parts, and the amount of the lignin in the ivory color filament formula is 0.1 part lower than that in the stripe color filament formula.
Example 1
100g of polymethyl methacrylate (LG chemical IH-830), 30g of ASA (LG chemical PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 10g of hydroxyapatite, 20g of tricalcium phosphate, 0.2g of organic pigment and 4g of titanium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 220 ℃,50r/min and 5 min), and after crushing and granulation, ivory colored filaments with the diameter of 0.1mm-0.5mm are obtained by utilizing double screw extrusion (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃, the rotation speed of the extruder is 30r/min and the traction speed is 5 m/min). Nylon PA66 (DuPont 101L) 100g, ASA (Taiwan Qimei)30g of PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 20g of tricalcium phosphate, 0.3g of lignin and 4g of titanium dioxide (all raw materials except the lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 240 ℃,50r/min and 5 min), and after crushing and granulation, the materials are extruded by a double screw (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃; the rotating speed of the extruder is 60r/min, the traction speed is 10 m/min) to obtain the stripe color filament with the diameter of 0.1mm-0.5 mm. Cutting the ivory color filaments and the stripe color filaments into the length of a mould, randomly mixing, and performing compression molding, wherein the processing parameters are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, and the cold pressing time is 2min. Demolding to obtain the ivory-imitating material. The density of the product was 1.25g/cm 3 The tensile strength was 50MPa, the bending strength was 110MPa, the pencil hardness was 4H, the Young's modulus was 0.5GPa, and the water absorption was 1%.
Example 2
100g of polymethyl methacrylate (brand: LG chemical IH-830), 50g of ASA (brand: taiwan Chimei PW-957), 3g of polyethylene wax, 0.5g of talcum powder, 0.25g of stearic acid, 0.25g of zinc stearate, 20g of hydroxyapatite, 3-710g of PA131, 0.2g of lignin and 6g of titanium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 220 ℃,100r/min and 10 min), and after crushing and granulation, the ivory color filament with the diameter of 0.1mm-0.5mm is obtained by utilizing double-screw extrusion (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃, the rotating speed of the extruder is 30r/min and the traction speed is 5 m/min). 100g of PC (Korean Letian PC-1100), 50g of ASA (Taiwan Chimei PW-957), 3g of polyethylene wax, 0.5g of talcum powder, 0.25g of stearic acid, 0.25g of zinc stearate, 0.3g of lignin and 6g of titanium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 220 ℃,100r/min and 5 min), and after crushing and granulation, the mixture is extruded by a double screw (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃, the rotating speed of the extruder is 30r/min and the drawing speed is 5 m/min) to obtain the stripe color filaments with the diameter of 0.1mm to 0.5 mm. Ivory color filaments andthe stripe color filaments are cut into the length of a die, and are subjected to compression molding after random mixing, and the processing parameters are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, the cold pressing time is 2min, and the ivory-imitating material is obtained after demoulding. The density of the product was 1.4g/cm 3 The tensile strength is 60MPa, the bending strength is 120MPa, the pencil hardness is 5H, the Young modulus is 2GPa, and the water absorption is 2%.
Example 3
100g of polymethyl methacrylate (LG chemical IH-830), 60g of ASA (LG chemical PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 30g of hydroxyapatite, 10g of kaolin, 0.3g of lignin and 6g of titanium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 220 ℃,100r/min and 5 min), and after crushing and granulation, ivory color filaments with the diameter of 0.1mm-0.5mm are obtained by using a double screw to extrude (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃ and the rotation speed of the extruder is 30r/min and the traction speed is 5 m/min). 100g of PET (trademark: duPont FR 530 in U.S.A.), 30g of ASA (trademark: taiwan Chimei PW-957 in China), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 10g of kaolin, 0.4 g of lignin and 6g of titanium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 240 ℃,50r/min and 5 min), and after crushing and granulation, the stripe-color filaments with the diameter of 0.1mm to 0.5mm are obtained by using double screws for extrusion (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃, the rotation speed of the extruder is 60r/min and the traction speed is 10 m/min). Cutting ivory color filaments and stripe color filaments into the length of a die, randomly mixing the ivory color filaments and the stripe color filaments, and then pressing the ivory color filaments and the stripe color filaments for forming, wherein the processing parameters are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, the cold pressing time is 2min, and the ivory-imitating material is obtained by demoulding. The density of the product was 1.45g/cm 3 The tensile strength was 30MPa, the bending strength was 60MPa, the pencil hardness was 5H, the Young's modulus was 2GPa, and the water absorption was 4%.
Example 4
100g of polymethyl methacrylate (LG chemical IH-830), 40g of ASA (LG chemical PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 10g of hydroxyapatite, 10g of montmorillonite, 0.2g of lignin and 8g of zinc oxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 220 ℃,50r/min and 5 min), and after crushing and granulation, ivory color filaments with the diameter of 0.1mm-0.5mm are obtained by utilizing double screw extrusion (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃, the rotation speed of the extruder is 30r/min and the traction speed is 5 m/min). 100g of PA66 (DuPont 101L), 40g of ASA (Taiwan Chimei PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 10g of hydroxyapatite, 10g of montmorillonite, 0.3g of lignin and 8g of zinc oxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 240 ℃,50r/min and 5 min), and after crushing and granulation, the stripe color filaments with the diameter of 0.1mm-0.5mm are obtained by utilizing double screw extrusion (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃,260 ℃, the rotating speed of the extruder is 30r/min and the traction speed is 5 m/min). Cutting the ivory color filaments and the stripe color filaments into the length of a mould, randomly mixing the ivory color filaments and the stripe color filaments, and then pressing and forming the ivory color filaments and the stripe color filaments, wherein the processing parameters are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, the cold pressing time is 2min, and the ivory-imitating material is obtained by demoulding. The density of the product was 1.4g/cm 3 The tensile strength is 50MPa, the bending strength is 90MPa, the pencil hardness is 5H, the Young modulus is 2GPa, and the water absorption rate is 2%.
Example 5
Adding 100g of polymethyl methacrylate (LG chemical IH-830), 40g of ASA (LG chemical PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 20g of hydroxyapatite, GF-610g of lignin and 6g of zirconium dioxide (all raw materials except the lignin are dried for 4 hours at 100 ℃) into an internal mixer (the processing temperature is 220 ℃,50r/min and 10 min), crushing and granulating by using double screws, and then, adding the obtained mixture into a double-screw extruderExtruding (processing temperature 220 deg.C, 250 deg.C, 260 deg.C; extruder rotation speed 45r/min, and drawing speed 7 m/min) to obtain ivory filament with diameter of 0.1-0.5 mm. 100g of PC (Korean Letian PC-1100), 40g of ASA (Taiwan Chimei PW-957), 2g of polyethylene wax, 0.5g of talcum powder, 0.5g of stearic acid, 0.5g of zinc stearate, 1 g of hydroxyapatite, GF-610g, 0.3g of lignin and 6g of zirconium dioxide (all raw materials except lignin are dried for 4 hours at 100 ℃) are added into an internal mixer (the processing temperature is 240 ℃,30r/min and 5 min), and after crushing and granulation, the mixture is extruded by double screws (the processing temperature is 220 ℃,250 ℃,260 ℃,260 ℃, the rotating speed of the extruder is 45r/min and the traction speed is 7 m/min) to obtain stripe color filaments with the diameter of 0.1mm-0.5 mm. Cutting No. 1 ivory color filaments and stripe color filaments into the length of a mould, and performing compression molding after random mixing, wherein the processing parameters are as follows: preheating at 220 deg.C, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, the cold pressing time is 2min, and the ivory-imitating material is obtained by demoulding. The density of the product was 1.5g/cm 3 The tensile strength is 30MPa, the bending strength is 60MPa, the pencil hardness is 5H, the Young modulus is 3GPa, and the water absorption rate is 2%.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the principle of the invention.
Reference documents:
[1]Cui F Z，Li Y，Ge J..Materials Science and Engineering R 2007，57：1-27.
[2]Chu Y H，Meyers M A，Wang B，Yang W，et al..Scientific Reports，2015，5： 14387.
[3]Fischer D，Parks S C，Mannhart J.Sustainability，2019，11：6538.
[4] lunisolar moon, yangjingxing, li french jeam plastic technology, 1991,6:21-23.
[5]Jiang Shan The invention of Chinese patent No. 1991, 10.5, CN 91109299.4.
[6]Ye AnshengThe invention patent of China, 2016,7.13, CN 201610586961.4.
[7]Moses T M，McClure S F.Gems&Gemology，2019，55(3)：416-425.
[8] Precious stones and precious stones, 2017, 19 (3): 24-34.
Claims (11)
1. An ivory-imitating material is characterized in that firstly, a polymethyl methacrylate matrix is selected, a toughening polymer, a filler, a processing aid and a coloring agent are added, ivory-color filaments are prepared through extrusion molding, then a high-viscosity-flow-temperature polymer is used as the matrix, the toughening polymer, the filler, the processing aid and the coloring agent are added, stripe-color filaments are prepared through extrusion molding, and then the two filaments with color numbers are mixed and pressed to form the ivory-imitating material with ivory appearance, handfeel and properties, wherein the density of the product is 1.25-1.5g/cm < 3 >, the tensile strength is 30-60MPa, the bending strength is 60-120MPa, the pencil hardness is 2H-5H, the Young modulus is 0.5-3GPa, and the water absorption is 1-4%.
2. The ivory-like material of claim 1 wherein the ivory-like filaments have a matrix of PMMA in an amount of 100 parts.
3. The ivory-like material of claim 1, wherein the toughening polymer of both the ivory-colored filaments and the striated-colored filaments is acrylonitrile-styrene-acrylate terpolymer (ASA) in an amount of 30 parts to 60 parts.
4. The ivory-like material of claim 1, wherein the high viscous flow temperature polymer in the striped color filaments is one of Polycarbonate (PC), nylon (PA 66), polyethylene terephthalate (PET) in an amount of 100 parts.
5. The ivory-like material according to claim 1, wherein the filler in the ivory-color filaments and the striped-color filaments is one or more of Hydroxyapatite (HAP), tricalcium phosphate, kaolin, montmorillonite, 6mm chopped glass fiber (GF-6) and 7mm chopped aramid fiber (PA 1313-7); preferably HAP plus any other filler, such as HAP + tricalcium phosphate, or HAP + kaolin, or HAP + montmorillonite, or HAP + GF-6, or HAP + PA1313-7, wherein the amount of HAP is 10-30 parts and the amount of other filler is 10-20 parts.
6. The ivory-imitated material as claimed in claim 1, wherein the processing aids in the ivory-colored filaments and the striped-colored filaments are one or more of polyethylene wax, talcum powder, stearic acid and zinc stearate; preferably polyethylene wax, talcum powder, stearic acid and zinc stearate, and the dosage of the polyethylene wax, the talcum powder, the stearic acid and the zinc stearate is 0.25-3 parts, preferably 2 parts of polyethylene wax, 0.5 part of talcum powder, 0.5 part of stearic acid and 0.5 part of zinc stearate.
7. The ivory-like material according to claim 1, wherein the coloring agents in the ivory-color filaments and the striped-color filaments are one or more of zinc oxide, titanium dioxide, zirconium dioxide and lignin, preferably lignin plus any other filler, such as lignin + zinc oxide, or lignin + titanium dioxide, or lignin + zirconium dioxide; the dosage of the lignin is 0.2 to 0.4 part, the dosage of the zinc oxide, the titanium dioxide and the zirconium dioxide is 4 to 8 parts, and the dosage of the lignin in the ivory color filament formula is lower than that in the stripe color filament formula by 0.1 part.
8. The method for preparing an ivory-imitated material according to claim 1, wherein the polymer, the filler, the processing aid and the colorant according to claim 1 are mixed and granulated, and then are extruded to prepare ivory-colored filaments and stripe-colored filaments (with the diameter of 0.1-0.5 mm), and then the two color number filaments are randomly mixed and pressed to prepare the ivory-imitated material.
9. The method for preparing the ivory-imitated material according to claim 8, wherein the blending conditions are as follows: blending by an internal mixer, and processing temperature: 220 to 240 ℃; the rotor speed is 30-50r/min, and the banburying time is 5-10min.
10. The method of preparing an ivory-like material as claimed in claim 8, wherein the extrusion conditions are: a co-rotating twin-screw extruder, a circular die (diameter 1 mm); a processing temperature interval: 220 ℃ to 260 ℃, preferably: 220 ℃,250 ℃,260 ℃,260 ℃; the rotating speed of the extruder is 30-60r/min, and the traction speed is 5-10m/min.
11. The method for preparing an ivory-imitated material according to claim 8, wherein the press forming conditions are as follows: preheating at 220 ℃, pre-pressing at 5MPa for 2min; deflating for 10s; the pressing temperature is 220 ℃, the pressing pressure is 10MPa, and the pressing time is 3min; the cold pressing pressure is 10MPa, and the cold pressing time is 2min.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB584197A (en) * | 1944-12-04 | 1947-01-09 | Clifford Hewitt Hall | Decorative articles and materials |
| JPS62158757A (en) * | 1986-01-07 | 1987-07-14 | Nippon Gakki Seizo Kk | Key board material |
| US20080229903A1 (en) * | 2007-03-23 | 2008-09-25 | Yamaha Corporation | Material for keys of keyboard |
| CN111808393A (en) * | 2020-07-21 | 2020-10-23 | 揭阳市创盛电子有限公司 | High-strength high-toughness PMMA (polymethyl methacrylate) super-hydrophobic composite material for piano white key skins |
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2021
- 2021-08-24 CN CN202110973206.2A patent/CN115716965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB584197A (en) * | 1944-12-04 | 1947-01-09 | Clifford Hewitt Hall | Decorative articles and materials |
| JPS62158757A (en) * | 1986-01-07 | 1987-07-14 | Nippon Gakki Seizo Kk | Key board material |
| US20080229903A1 (en) * | 2007-03-23 | 2008-09-25 | Yamaha Corporation | Material for keys of keyboard |
| CN111808393A (en) * | 2020-07-21 | 2020-10-23 | 揭阳市创盛电子有限公司 | High-strength high-toughness PMMA (polymethyl methacrylate) super-hydrophobic composite material for piano white key skins |
Non-Patent Citations (2)
| Title |
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| THADDAA RATH等: "Developing an ivory-like material for stereolithography-based additive manufacturing", 《APPLIED MATERIALS TODAY》, vol. 23, pages 101016 * |
| 邱泽皓: "杂化材料及其在古象牙文物保护中的应用研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》, no. 12, pages 020 - 9 * |
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