CN110204870B - PTT 3D printing wire rod resistant to shrinkage and warping and preparation method thereof - Google Patents
PTT 3D printing wire rod resistant to shrinkage and warping and preparation method thereof Download PDFInfo
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- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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Abstract
The invention relates to a shrinkage and warpage resistant PTT 3D printing wire and a preparation method thereof. The method comprises the following steps of preparing, by weight, 50-65% of PTT, 15-25% of PBAT, 10-25% of an elastomer-aramid pulp compound, 3-8% of a compatibilizer, 3-8% of a tackifier, 0.2-2% of an ester exchange promoter, 0.2-1% of an antioxidant and 0.2-1% of paraffin oil, and preparing the shrinkage and warpage resistant PTT 3D printing wire through drying and dehumidification, material mixing, melt blending, extrusion and sizing, traction and winding. The wire rod is molded at a lower bottom plate temperature without shrinkage and warpage, has excellent mechanical properties, good bonding property and excellent molding property, is wide in application range, and is particularly suitable for 3D printing in the engineering field.
Description
Technical Field
The invention relates to a shrinkage and warpage resistant PTT 3D printing wire and a preparation method thereof.
Background
Additive manufacturing is also called 3D printing, and is a novel manufacturing technology integrating multiple disciplines of digital software, machinery and materials. It is characterized by that it uses material accumulation and forming process, and can be extensively used in the fields of medical treatment, education and military industry, etc. Fused deposition modeling has attracted attention as one of the mainstream techniques for 3D printing because of its characteristics such as low cost, low temperature molding, and safe operation.
PTT resin is engineering plastic obtained by polymerization of propylene glycol and terephthalic acid, and the material has excellent processing performance, mechanical performance and chemical corrosion resistance. However, in the process of melting, depositing and molding the PTT resin, due to the 3D printing open molding mode, the pressure maintaining and sizing effect of the mold is lacked, and the molecular chains are easy to regularly stack to form stress concentration in the cooling process, so that the shrinkage and warpage phenomenon is generated, the size and the precision of a printed sample are seriously influenced, and further, the printing failure is caused. In the prior art, the shrinkage and warpage phenomenon is overcome mainly by increasing the temperature of the bottom plate (more than or equal to 120 ℃), which can increase the printing cost and increase the safety risk, and is not beneficial to the application and popularization of PTT materials. In addition, 3D printing is carried out by material superposition, so that welding marks with weak interface acting force are formed, and a sample is easy to crack, so that the appearance and the application of the product are influenced. Therefore, it goes without saying that the above-mentioned disadvantages are addressed to broaden the application of PTT materials in 3D printing.
Disclosure of Invention
Based on the background and the problems, the invention aims to provide a shrinkage warpage resistant PTT 3D printing wire and a preparation method thereof. The method takes PTT resin as a raw material, and prepares the PTT 3D printing wire with shrinkage and warpage resistance by adding PBAT, an elastomer-aramid pulp compound, a compatibilizer, a tackifier and an ester exchange accelerator for modification. The PTT 3D printing wire prepared by the invention is molded at a lower bottom plate temperature without shrinkage and warpage, has excellent mechanical properties, good bonding properties and excellent molding properties, has a wide application range, and is particularly suitable for 3D printing in the engineering field.
The above effects of the invention are realized by the following technical scheme: the shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising, by weight, 50-65% of PTT, 15-25% of PBAT, 10-25% of an elastomer-aramid pulp compound, 3-8% of a compatibilizer, 3-8% of a tackifier, 0.2-2% of an ester exchange promoter, 0.2-1% of an antioxidant and 0.2-1% of paraffin oil.
In a further improvement, the elastomer in the elastomer-aramid pulp compound is formed by mixing one or more than two of ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA) and ethylene-methyl methacrylate copolymer (EMMA) in any mixing ratio.
The elastomer-aramid pulp composite is further improved in that the mass ratio of the elastomer to the aramid pulp is 0.5: 1-3: 1.
In a further improvement, the compatibilizer is prepared by mixing one or more than two of ethylene grafted glycidyl methacrylate copolymer (PE-g-GMA), ethylene grafted maleic anhydride copolymer (PE-g-MA) and ethylene-n-butyl acrylate-glycidyl methacrylate (E-BA-GMA) in any mixing ratio.
In a further improvement, the tackifier is one or more than two of rosin resin, terpene resin, coumarone-indene resin, C5 petroleum resin and C9 petroleum resin which are mixed in any mixing ratio.
The ester exchange accelerant is one or more than two of monobutyl tin oxide, dibutyl tin oxide, samarium trifluoromethanesulfonate, tributyl tin chloride and butyl tin trichloride which are mixed in any mixing ratio.
In a further improvement, the antioxidant is one or more than two of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (antioxidant 1010), tri [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168) and beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester (antioxidant 1076) which are mixed in any mixing ratio.
Based on the same invention, the invention also provides a preparation method of the shrinkage and warpage resistant PTT 3D printing wire, which is characterized by comprising the following steps:
1) and the preparation of the elastomer-aramid pulp compound comprises the following steps:
A. respectively vacuum-drying the elastomer and the aramid pulp;
B. accurately weighing the elastomer and the aramid pulp dried in the step A according to the mass ratio of 0.5: 1-3: 1, and then placing the weighed components in a high-speed kneading machine to be uniformly mixed to obtain a mixture;
C. b, mixing the mixture obtained in the step B through a continuous mixing mill to obtain an elastomer-aramid pulp composite material, wherein the mixing temperature is 90-120 ℃, the extrusion temperature is 140-170 ℃, and the screw rotation speed is 35-55 rpm;
2) respectively vacuum-drying PTT and PBAT, accurately weighing 50-65% of PTT, 15-25% of PBAT and 0.2-2% of ester exchange accelerator according to weight percentage, then placing the weighed components in a high-speed kneading machine to be uniformly mixed to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain a blended particle A, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 10-100 rpm;
3) respectively vacuum-drying the elastomer-aramid pulp compound, the compatibilizer, the tackifier and the antioxidant, accurately weighing the dried components according to the following weight percentage ratio of 10-25% of the elastomer-aramid pulp compound, 3-8% of the compatibilizer, 3-8% of the tackifier, 0.2-1% of the antioxidant and 0.2-1% of paraffin oil, then placing the blending particles A prepared in the step A and the components weighed in the step 3) into a high-speed kneader to be uniformly mixed to obtain a mixture, and performing melt extrusion and material making on the mixture through a double-screw extruder to obtain blending particles B, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 10-100 rpm;
4) and carrying out extrusion molding and traction winding on the blending particles B prepared in the step 3) through a wire machine to obtain the 3D printing wire, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 30-120 rpm.
The invention has the beneficial effects that:
(1) the molding performance is excellent. The material does not relate to the addition of inorganic materials, has good forming performance, does not have the problems of plugs, bubbles, burrs and the like in the printing process, has strong printing continuity and persistence, and has fine and smooth surface of a formed product.
(2) And resistance to shrinkage and warping. The material is suitable for printing at a lower bottom plate temperature without generating a shrinkage and warpage phenomenon, ensures the dimensional stability and precision of a molded product, reduces the energy consumption in the molding process, and simultaneously improves the printing safety.
(3) And stress cracking resistance. Aiming at the welding marks formed by stacking the 3D printing technology layer by layer, the material effectively enhances the interface bonding force in the printing process and prevents the cracking phenomenon.
(4) The mechanical property is better. The material has good forming performance, good strength and toughness, and is suitable for application in the engineering field.
(5) The PBAT resin is used as a novel bio-based material and is obtained by polymerizing butanediol adipate and butanediol terephthalate, the material has excellent processing performance and good impact toughness, and the molecular structure is similar to that of PTT and can perform ester exchange reaction with the PTT. The ester exchange promoter is added to promote the exchange effect between PTT and PBAT molecular chains, so that the crystallization capacity of the PTT can be effectively reduced, more amorphous structures are formed in the system, and stress concentration is reduced. On the basis, a proper amount of elastomer-aramid pulp compound is added to further reduce the warping deformation of the system, so that the problem of shrinkage and warping of the PTT in the 3D printing process is effectively solved.
Drawings
Fig. 1 is a graph comparing the effect of a modified PTT 3D printed wire print sample (bottom) with an unmodified PTT 3D printed wire print sample (top).
Detailed Description
The present invention will be described in further detail with reference to specific examples, but it should not be construed that the scope of the present invention is limited to the examples.
Example 1
The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising the following components in percentage by weight: PTT 52%, PBAT 18%, EEA-aramid pulp compound 18%, E-BA-GMA 5%, rosin resin 4.5%, samarium trifluoromethanesulfonate 1%, 1076 antioxidant 0.3% and paraffin oil 1.2%.
The preparation method comprises the following steps:
A. respectively drying EEA and aramid pulp in vacuum;
B. accurately weighing the EEA and the aramid pulp dried in the step A according to the mass ratio of 2.2:1, and then placing the weighed components in a high-speed kneader to be uniformly mixed to obtain a mixture;
C. and B, mixing the mixture obtained in the step B through a continuous mixer to obtain the EEA-aramid pulp composite material, wherein the mixing temperature is 95 ℃, the extrusion temperature is 150 ℃, and the screw rotation speed is 36 rpm.
D. Respectively drying PTT and PBAT in vacuum, accurately weighing the PTT, the PBAT and samarium trifluoromethanesulfonate according to weight percentage, then uniformly mixing the weighed components in a high-speed kneader to obtain a mixture, and carrying out melt extrusion and material making on the mixture through a double-screw extruder to obtain blended particles A, wherein the charging barrel temperature is 190, 220, 240, 255, 252 and 250 ℃, and the screw rotation speed is 60 rpm.
E. Respectively vacuum-drying the EEA-aramid pulp compound, the E-BA-GMA, the rosin resin and the antioxidant 1076, accurately weighing various dried resins and paraffin oil according to the weight percentage, then placing the blending particle A prepared in the step D and the components weighed in the step E into a high-speed kneader to be uniformly mixed to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain a blending particle B, wherein the temperature of a charging barrel is 190 rpm, 222 rpm, 240 rpm, 256 rpm, 254 rpm and 250 rpm, and the screw rotation speed is 50 rpm;
F. e, extruding, shaping, drawing and winding the blend particles B prepared in the step E through a wire machine to obtain a 3D printing wire, wherein the temperature of a charging barrel is 192 ℃, 223 ℃, 245 ℃, 256 ℃, 255 and 253 ℃, and the rotating speed of a screw is 40 rpm;
G. and D, 3D printing and forming the wire obtained in the step F, measuring the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of the 3D printed sample strip, and observing whether the sample strip cracks or not, wherein the test result is shown in Table 1.
Example 2
The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising the following components in percentage by weight: 62% of PTT, 18% of PBAT, 10% of EMA-aramid pulp compound, 3% of PE-g-GMA, 4% of coumarone-indene resin, 1.4% of tributyltin chloride, 0.6% of 1010 antioxidant and 1% of paraffin oil.
The preparation method comprises the following steps:
A. respectively drying EMA and aramid pulp in vacuum;
B. accurately weighing the EMA and aramid pulp dried in the step A according to the mass ratio of 0.5:1, and then placing the weighed components in a high-speed kneader to be uniformly mixed to obtain a mixture;
C. and B, mixing the mixture obtained in the step B through a continuous mixer to obtain the EMA-aramid pulp composite material, wherein the mixing temperature is 102 ℃, the extrusion temperature is 155 ℃, and the screw rotation speed is 32 rpm.
D. Respectively drying PTT and PBAT in vacuum, accurately weighing the PTT, the PBAT and tributyltin chloride according to weight percentage, then uniformly mixing the weighed components in a high-speed kneader to obtain a mixture, and carrying out melt extrusion and material manufacturing on the mixture through a double-screw extruder to obtain blended particles A, wherein the charging barrel temperature is 190, 225, 245, 256, 253 and 250 ℃, and the screw rotation speed is 42 rpm.
E. Respectively drying the EMA-aramid pulp compound, the PE-g-GMA, the coumarone-indene resin and the antioxidant 1010 in vacuum, accurately weighing various dried resins and paraffin oil according to the weight percentage, then uniformly mixing the blending particle A prepared in the step D and the components weighed in the step E in a high-speed kneader to obtain a mixture, and carrying out melt extrusion and molding on the mixture through a double-screw extruder to obtain a blending particle B, wherein the temperature of a charging barrel is 192 ℃, 223 ℃, 245, 254, 255 and 252 ℃, and the rotating speed of the screw is 55rpm;
F. e, extruding, shaping, drawing and winding the blend particles B prepared in the step E through a wire machine to obtain a 3D printing wire, wherein the temperature of a charging barrel is 190, 225, 243, 253, 255 and 250 ℃, and the rotating speed of a screw is 40 rpm;
G. and D, 3D printing and forming the wire obtained in the step F, measuring the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of the 3D printed sample strip, and observing whether the sample strip cracks or not, wherein the test result is shown in Table 1.
Example 3
The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising the following components in percentage by weight: 50% of PTT, 18% of PBAT, 20% of EMMA-aramid pulp compound, 7% of E-BA-GMA, 3% of terpene resin, 1% of monobutyl tin oxide, 0.3% of 168 antioxidant and 0.7% of paraffin oil.
The preparation method comprises the following steps:
A. respectively drying EMMA and aramid pulp in vacuum;
B. accurately weighing the EMMA and the aramid pulp dried in the step A according to the mass ratio of 0.6:1, and then placing the weighed components in a high-speed kneader to be uniformly mixed to obtain a mixture;
C. and B, mixing the mixture obtained in the step B through a continuous mixing mill to obtain the EMMA-aramid pulp composite material, wherein the mixing temperature is 92 ℃, the extrusion temperature is 152 ℃, and the screw rotation speed is 35 rpm.
D. Respectively drying PTT and PBAT in vacuum, accurately weighing the PTT, the PBAT and the monobutyl tin oxide according to weight percentage, then uniformly mixing the weighed components in a high-speed kneader to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain a blend particle A, wherein the charging barrel temperature is 190, 222, 245, 255, 256 and 254 ℃, and the screw rotating speed is 48 rpm.
E. Respectively vacuum-drying EMMA-aramid pulp compound, E-BA-GMA, terpene resin and an antioxidant 168, accurately weighing various dried resins and paraffin oil according to the weight percentage, then placing the blend particle A prepared in the step D and the components weighed in the step E into a high-speed kneader to be uniformly mixed to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain a blend particle B, wherein the temperature of a charging barrel is 193, 220, 242, 252, 255 and 250 ℃, and the rotating speed of a screw is 55rpm;
F. e, extruding, shaping, drawing and winding the blend particles B prepared in the step E through a wire machine to obtain a 3D printing wire, wherein the temperature of a charging barrel is 195, 223, 245, 252, 255 and 250 ℃, and the rotating speed of a screw is 38 rpm;
G. and D, 3D printing and forming the wire obtained in the step F, measuring the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of the 3D printed sample strip, and observing whether the sample strip cracks or not, wherein the test result is shown in Table 1.
Example 4
The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising the following components in percentage by weight: PTT 53%, PBAT 17%, EMA-aramid pulp compound 18%, PE-g-MA 4%, C5 petroleum resin 5%, dibutyltin oxide 1.2%, 1076 antioxidant 0.8%, paraffin oil 1%.
The preparation method comprises the following steps:
A. respectively drying EMA and aramid pulp in vacuum;
B. accurately weighing the EMA and aramid pulp dried in the step A according to the mass ratio of 1.2:1, and then placing the weighed components in a high-speed kneader to be uniformly mixed to obtain a mixture;
C. and B, mixing the mixture obtained in the step B through a continuous mixer to obtain the EMA-aramid pulp composite material, wherein the mixing temperature is 92 ℃, the extrusion temperature is 150 ℃, and the screw rotation speed is 36 rpm.
D. Respectively drying PTT and PBAT in vacuum, accurately weighing the PTT, the PBAT and dibutyltin oxide according to weight percentage, then uniformly mixing the weighed components in a high-speed kneader to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain blended particles A, wherein the charging barrel temperature is 190, 223, 245, 255 and 250 ℃, and the screw rotation speed is 46 rpm.
E. Respectively drying the EMA-aramid pulp compound, PE-g-MA, C5 petroleum resin and an antioxidant 1076 in vacuum, accurately weighing various dried resins and paraffin oil according to the weight percentage, then uniformly mixing the blend particle A prepared in the step D and the components weighed in the step E in a high-speed kneader to obtain a mixture, melting and extruding the mixture by a double-screw extruder to obtain a blend particle B, wherein the temperature of a charging barrel is 192, 222, 244, 255, 258 and 250 ℃, and the rotating speed of a screw is 53 rpm;
F. e, extruding and shaping the blended particles prepared in the step E through a wire machine, and carrying out traction and winding to obtain a 3D printing wire, wherein the temperature of a charging barrel is 193 ℃, 225, 245, 255, 254 and 252 ℃, and the rotating speed of a screw is 48 rpm;
G. and D, 3D printing and forming the wire obtained in the step F, measuring the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of the 3D printed sample strip, and observing whether the sample strip cracks or not, wherein the test result is shown in Table 1.
Example 5
The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising the following components in percentage by weight: 60% of PTT, 16% of PBAT, 14% of EMMA-aramid pulp compound, 3.5% of PE-g-GMA, 5% of C9 petroleum resin, 0.6% of butyl tin trichloride, 0.4% of 168 antioxidant and 0.5% of paraffin oil.
The preparation method comprises the following steps:
A. respectively drying EMMA and aramid pulp in vacuum;
B. accurately weighing the EMMA and the aramid pulp dried in the step A according to the mass ratio of 0.8:1, and then placing the weighed components in a high-speed kneader to be uniformly mixed to obtain a mixture;
C. and B, mixing the mixture obtained in the step B through a continuous mixer to obtain the EMMA-aramid pulp composite material, wherein the mixing temperature is 100 ℃, the extrusion temperature is 160 ℃, and the screw rotation speed is 50 rpm.
D. Respectively drying PTT and PBAT in vacuum, accurately weighing the PTT, the PBAT and butyl tin trichloride according to weight percentage, then uniformly mixing the weighed components in a high-speed kneader to obtain a mixture, and carrying out melt extrusion and material manufacturing on the mixture through a double-screw extruder to obtain blended particles A, wherein the charging barrel temperature is 192 ℃, 225, 245, 255, 253 ℃, and the screw rotation speed is 43 rpm.
E. Respectively drying EMMA-aramid pulp compound, PE-g-GMA, C9 petroleum resin and an antioxidant 168 in vacuum, accurately weighing various dried resins and paraffin oil according to the weight percentage, then uniformly mixing the blending particle A prepared in the step D and the components weighed in the step E in a high-speed kneader to obtain a mixture, melting and extruding the mixture by a double-screw extruder to obtain a blending particle B, wherein the temperature of a charging barrel is 192, 224, 246, 254, 255 and 252 ℃, and the rotating speed of the screw is 50 rpm.
F. E, extruding, shaping, drawing and winding the blend particles B prepared in the step E through a wire machine to obtain a 3D printing wire, wherein the temperature of a charging barrel is 192 ℃, 225, 246, 254, 256 and 252 ℃, and the rotating speed of a screw is 32 rpm;
G. and D, 3D printing and forming the wire obtained in the step F, measuring the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of the 3D printed sample strip, and observing whether the sample strip cracks or not, wherein the test result is shown in Table 1.
Comparative example 1
The PTT resin is dried in vacuum, a 3D printing wire rod is prepared through melt extrusion and shaping traction, the wire rod is subjected to 3D printing and forming, the limit deviation grade (GB/T1804-92), the tensile strength (GB/T1040.2-2006) and the impact strength (GB/T1043.1-2008) of the linear dimension of a 3D printing sample strip are measured, whether the sample strip cracks or not is observed, and the test result is shown in Table 1.
TABLE 1 test results of Material Properties
Claims (6)
1. The shrinkage and warpage resistant PTT 3D printing wire is characterized by comprising, by weight, 50-65% of PTT, 15-25% of PBAT, 10-25% of an elastomer-aramid pulp compound, 3-8% of a compatibilizer, 3-8% of a tackifier, 0.2-2% of an ester exchange promoter, 0.2-1% of an antioxidant and 0.2-1% of paraffin oil, wherein an elastomer in the elastomer-aramid pulp compound is formed by mixing one or more of an ethylene-methyl acrylate copolymer, an ethylene-ethyl acrylate copolymer and an ethylene-methyl methacrylate copolymer in any mixing ratio, and the mass ratio of the elastomer to the aramid pulp in the elastomer-aramid pulp compound is 0.5: 1-3: 1.
2. The shrink warp resistant PTT 3D printing wire of claim 1, wherein: the compatibilizer is one or more than two of ethylene grafted glycidyl methacrylate copolymer, ethylene grafted maleic anhydride copolymer and ethylene-n-butyl acrylate-glycidyl methacrylate which are mixed in any mixing ratio.
3. The shrink warp resistant PTT 3D printing wire of claim 1, wherein: the tackifier is one or more than two of rosin resin, terpene resin, coumarone-indene resin, C5 petroleum resin and C9 petroleum resin which are mixed in any mixing ratio.
4. The shrink warp resistant PTT 3D printing wire of claim 1, wherein: the ester exchange accelerant is formed by mixing one or more than two of monobutyl tin oxide, dibutyl tin oxide, samarium trifluoromethanesulfonate, tributyl tin chloride and butyl tin trichloride in any mixing ratio.
5. The shrink warp resistant PTT 3D printing wire of claim 1, wherein: the antioxidant is one or more of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, tri [2, 4-di-tert-butylphenyl ] phosphite and beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester which are mixed in any mixing ratio.
6. A method for preparing a PTT 3D printing wire resistant to shrinkage warpage according to any one of claims 1-5, characterized by comprising the steps of:
1) and the preparation of the elastomer-aramid pulp compound comprises the following steps:
A. respectively vacuum-drying the elastomer and the aramid pulp;
B. accurately weighing the elastomer and the aramid pulp dried in the step A according to the mass ratio of 0.5: 1-3: 1, and then placing the weighed components in a high-speed kneading machine to be uniformly mixed to obtain a mixture;
C. b, mixing the mixture obtained in the step B through a continuous mixing mill to obtain an elastomer-aramid pulp composite material, wherein the mixing temperature is 90-120 ℃, the extrusion temperature is 140-170 ℃, and the screw rotation speed is 35-55 rpm;
2) respectively vacuum-drying PTT and PBAT, accurately weighing 50-65% of PTT, 15-25% of PBAT and 0.2-2% of ester exchange accelerator according to weight percentage, then placing the weighed components in a high-speed kneading machine to be uniformly mixed to obtain a mixture, and melting and extruding the mixture by a double-screw extruder to obtain a blended particle A, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 10-100 rpm;
3) respectively vacuum-drying the elastomer-aramid pulp compound, the compatibilizer, the tackifier and the antioxidant, accurately weighing the dried components according to the following weight percentage ratio of 10-25% of the elastomer-aramid pulp compound, 3-8% of the compatibilizer, 3-8% of the tackifier, 0.2-1% of the antioxidant and 0.2-1% of paraffin oil, then uniformly mixing the blending particle A prepared in the step 2) and the components weighed in the step 3) in a high-speed kneader to obtain a mixture, and performing melt extrusion and material making on the mixture through a double-screw extruder to obtain a blending particle B, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 10-100 rpm;
4) and carrying out extrusion molding and traction winding on the blending particles B prepared in the step 3) through a wire machine to obtain the 3D printing wire, wherein the temperature of a charging barrel is 190-260 ℃, and the rotating speed of a screw is 30-120 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522558.9A CN110204870B (en) | 2019-06-17 | 2019-06-17 | PTT 3D printing wire rod resistant to shrinkage and warping and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910522558.9A CN110204870B (en) | 2019-06-17 | 2019-06-17 | PTT 3D printing wire rod resistant to shrinkage and warping and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110204870A CN110204870A (en) | 2019-09-06 |
| CN110204870B true CN110204870B (en) | 2021-07-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1569931A (en) * | 2004-04-26 | 2005-01-26 | 东莞市正昱塑胶五金有限公司 | Fiber reinforced thermolplastic plastic preparation method |
| WO2008133262A1 (en) * | 2007-04-24 | 2008-11-06 | Toyo Boseki Kabushiki Kaisha | Polyester elastomer composition, and method for production thereof |
| CN107603121A (en) * | 2017-09-20 | 2018-01-19 | 福建师范大学 | A kind of ABS3D printing wire rods of resistance to warpage crack resistence and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569931A (en) * | 2004-04-26 | 2005-01-26 | 东莞市正昱塑胶五金有限公司 | Fiber reinforced thermolplastic plastic preparation method |
| WO2008133262A1 (en) * | 2007-04-24 | 2008-11-06 | Toyo Boseki Kabushiki Kaisha | Polyester elastomer composition, and method for production thereof |
| CN107603121A (en) * | 2017-09-20 | 2018-01-19 | 福建师范大学 | A kind of ABS3D printing wire rods of resistance to warpage crack resistence and preparation method thereof |
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