CN111117189A - Laser welding easily-processed PC/ABS alloy material and preparation method thereof - Google Patents
Laser welding easily-processed PC/ABS alloy material and preparation method thereof Download PDFInfo
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- CN111117189A CN111117189A CN201911370458.5A CN201911370458A CN111117189A CN 111117189 A CN111117189 A CN 111117189A CN 201911370458 A CN201911370458 A CN 201911370458A CN 111117189 A CN111117189 A CN 111117189A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Abstract
The invention relates to a laser welding easily-processed PC/ABS alloy material and a preparation method thereof, wherein the alloy material comprises the following components in parts by weight: PC resin: 40-70 parts of ABS resin: 20-40 parts of a reversible reaction crosslinking agent: 0.5-20 parts of nano indium tin oxide: 0.1-1 part of antioxidant: 0.1-1 part of lubricant: 0.1 to 1 portion. The reversible reaction cross-linking agent consists of a copolymer A with a furan functional group on a lateral group and a copolymer B with a maleimide on a lateral group. Compared with the prior art, the PC/ABS alloy material provided by the invention can obviously improve the welding strength of the product after the reversible reaction cross-linking agent is added, and can reduce the addition amount of the near infrared absorbent, thereby reducing the cost and improving the appearance of the welded product, and can be applied to interior and exterior trimming parts of automobiles and the like.
Description
Technical Field
The invention relates to the field of high polymer modified materials, in particular to a laser welding easily-processed PC/ABS alloy material and a preparation method thereof.
Background
The Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy integrates the advantages of the PC and the acrylonitrile-butadiene-styrene (ABS), so that on one hand, the heat resistance, the impact strength and the tensile strength of the ABS material are improved, on the other hand, the melt viscosity of the PC is reduced, the processability is improved, the stress sensitivity of an injection molding product is weakened, and the PC/acrylonitrile-butadiene-styrene (ABS) alloy is widely applied to the fields of automobiles, electronics, office equipment and the like. In the application of the automobile rear tail lamp, PC/ABS is generally adopted, and is the preferred material of the rear tail lamp due to good toughness, higher heat resistance and excellent processability. Generally, the shell of the rear taillight is made of PC/ABS alloy material, and the cover of the taillight is made of polymethyl methacrylate (PMMA), so that the two are welded and assembled together. At present, the welding processes mainly adopted by the car lamp comprise ultrasonic welding, hot plate welding, vibration friction welding, laser welding and the like. The laser welding process has the advantages that due to the characteristics of good laser directionality, high energy density, small spot diameter, non-contact welding and the like, a precise, firm and sealed welding line can be obtained, plastics are less decomposed, few chips are generated, welding marks and damages cannot be seen on the welding surface, pollution cannot be caused, and the laser welding process becomes a novel welding technology with huge development potential in the field of vehicle lamp welding in recent years.
The so-called laser welding process, i.e. the plastic part to be welded is divided into two parts, one part is a transparent part and the other part is an absorbing part, the laser passes through the transparent part, the energy is absorbed in the absorbing part in a large amount, the contact surface of the two parts is heated to a molten state, and the two parts are welded together under the action of clamping pressure and thermal expansion. The laser welding mainly achieves the purpose of melting materials by absorbing infrared energy through the materials, but the conventional PC/ABS alloy materials have weak infrared absorption effect, the welding strength of products is weak, and the requirements of application cannot be met.
There are few patents related to this point, such as "a polycarbonate composition easy to process by laser welding and a method for preparing the same" (patent No. CN105440639B), which propose that the welding effect is achieved by adding a near infrared absorber and increasing the melt strength, but increasing the melt strength deteriorates the processability of the material. For example, in the patent "a PC/ABS alloy for laser welding and its preparation" (patent No. CN107312303A), nano copper sulfide is used as an infrared absorber, and graphite is compounded to improve the welding effect, but after graphite and other materials are added, the PC/ABS alloy material is black in color, single in material color, and limited in application. In fact, the principle of plastic product welding is based on the fact that after the polymer material absorbs energy, interfacial polymer molecular chains rapidly infiltrate, diffuse and entangle, thereby achieving effective welding. Therefore, the key to improving the welding strength is to increase the energy locally at the interface and to improve the interdiffusion and entanglement of the molecular chains of the two polymers at the interface.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a PC/ABS alloy material which has good appearance, is easy to laser weld and has high welding strength and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
the laser welding workable PC/ABS alloy material is characterized by comprising the following components in parts by weight:
PC resin: 40-70 parts of a binder;
ABS resin: 20-40 parts of a solvent;
reversible reactive crosslinking agent: 1-20 parts;
nano indium tin oxide: 0.1-1 part;
antioxidant: 0.1-1 part;
lubricant: 0.1 to 1 portion.
The PC resin is bisphenol A aromatic PC, and the melt index is 5-30 g/10 min.
The molecular weight of the ABS resin is 100000-200000, and the melt index is 5-30 g/10 min.
The reversible reaction cross-linking agent consists of a copolymer A with a furan functional group on a lateral group and a copolymer B with a maleimide on a lateral group. The copolymer A is any one or the combination of more than two of polymethyl methacrylate with a furan functional group on a lateral group, methyl methacrylate-butadiene-styrene copolymer with a furan functional group on a lateral group and ethylene-methyl methacrylate copolymer with a furan functional group on a lateral group. The copolymer B is any one or the combination of more than two of polystyrene with lateral group containing maleimide, styrene-maleic anhydride copolymer with lateral group containing maleimide, styrene-acrylonitrile-maleic anhydride copolymer with lateral group containing maleimide, styrene-acrylonitrile-acrylic acid copolymer with lateral group containing maleimide and methyl methacrylate-butadiene-styrene copolymer with lateral group containing maleimide.
The molar ratio of the side group furan in the copolymer A to the side group maleimide in the copolymer B in the reversible reaction cross-linking agent is 1-6: 1.
The particle size of the nano indium tin oxide is 50-200 nm, and the purity is more than or equal to 95%.
The antioxidant is a hindered classified antioxidant or phosphite antioxidant, and comprises any one or a combination of more than two of a commercially available antioxidant 1010, an antioxidant 1076, an antioxidant 1098, an antioxidant 168 and an antioxidant 618.
The lubricant comprises any one or the combination of more than two of silicone oil, silicone master batch, ethylene distearamide and pentaerythritol stearic acid.
The invention also relates to a preparation method of the laser welding workable PC/ABS alloy material, which is characterized by comprising the following steps:
(1) adding PC resin, ABS resin, a reversible reaction cross-linking agent, nano indium tin oxide, an antioxidant and a lubricant into a mixing stirrer for premixing, and controlling the rotating speed of the mixing stirrer to be 100-300 r/min and the mixing time to be 5-20 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 300-600 r/min and the vacuum degree to be-0.06-0.08 MPa, and granulating to prepare the laser-welded PC/ABS alloy material easy to process.
Compared with the prior art, the invention has the following beneficial effects:
the reversible reaction cross-linking agent is added into the PC/ABS alloy material which is easy to process by laser welding, wherein the reversible reaction cross-linking agent consists of a copolymer A with a furan functional group on a side group and a copolymer B with a maleimide on a side group, and the furan functional group and the maleimide can perform a reverse reaction of cycloaddition in the high-temperature extrusion processing process, so that the processing performance of the PC/ABS alloy material is not influenced. When the copolymer A with the furan functional group on the side group is welded with materials such as PMMA in a laser mode, the macromolecular chain structure of the copolymer A with the furan functional group on the side group is the same as or similar to that of PMMA, compared with PC and ABS resin, the copolymer A with the furan functional group on the side group can be rapidly soaked and diffused into a PMMA matrix because the macromolecular chain structure is smaller than that of PC and ABS resin, and when the temperature of the interface of the PC/ABS alloy material and the PMMA material is lower, the copolymer A with the furan functional group on the side group diffused into the PMMA matrix can perform cycloaddition reaction with the copolymer B with the maleimide on the side group in the PC/ABS matrix, so that the interface bonding strength of the PC/ABS. In addition, the nano indium tin oxide adopted by the invention has stronger absorption to near infrared light, ensures that a base material can efficiently absorb laser energy for welding, and meanwhile, the nano indium tin oxide has lighter color than carbon materials such as graphite, is easy to prepare a light-color welding product, and widens the application field of the welding product. Due to the existence of the reversible cross-linking agent, the addition amount of the near infrared absorbent nano indium tin oxide can be properly reduced, so that the material cost can be reduced, the processing performance of the PC/ABS alloy material can be improved, and a workpiece with good surface appearance can be obtained.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Comparative example 1
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 70 parts of PC resin (melt index is 5g/10min), 30 parts of ABS resin (melt index is 10g/10min), 10100.1 parts of antioxidant, 1680.1 parts of antioxidant and 0.1 part of lubricant silicone oil into a mixing stirrer for premixing, controlling the rotating speed of the mixer to be 100r/min, and mixing for 5 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, controlling the screw rotation speed to be 300r/min and the vacuum degree to be-0.06 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Comparative example 2
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 70 parts of PC resin (with the melt index of 5g/10min), 30 parts of ABS resin (with the melt index of 10g/10min), 1 part of nano indium tin oxide, 10100.1 parts of antioxidant, 1680.1 parts of antioxidant and 0.1 part of lubricant silicone oil into a mixing stirrer for premixing, and controlling the rotating speed of the mixer to be 100r/min and the mixing time to be 5 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, controlling the screw rotation speed to be 300r/min and the vacuum degree to be-0.06 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 1
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 70 parts of PC resin (the melt index is 5g/10min), 30 parts of ABS resin (the melt index is 10g/10min), 1 part of reversible reaction cross-linking agent, 1 part of nano indium tin oxide, 10100.1 parts of antioxidant, 1680.1 parts of antioxidant and 0.1 part of lubricant silicone oil into a mixing stirrer for premixing, wherein a copolymer A in the reversible reaction cross-linking agent is polymethyl methacrylate with a furan functional group on a side group, a copolymer B is polystyrene with maleimide on a side group, the molar ratio of the furan on the side group in the copolymer A to the maleimide on the side group in the copolymer B is 1:1, the rotating speed of the mixer is controlled to be 100r/min, and the mixing time is 5 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, controlling the screw rotation speed to be 300r/min and the vacuum degree to be-0.06 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 2
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 40 parts of PC resin (the melt index is 25g/10min), 40 parts of ABS resin (the melt index is 10g/10min), 20 parts of reversible reaction cross-linking agent, 0.5 part of nano indium tin oxide, 10100.5 parts of antioxidant, 1680.5 part of antioxidant and 1 part of lubricant silicone oil into a mixing stirrer for premixing, wherein a copolymer A in the reversible reaction cross-linking agent is a methyl methacrylate-butadiene-styrene copolymer with a furan functional group on a side group, a copolymer B is a styrene-maleic anhydride copolymer with a maleimide side group, the molar ratio of the furan side group in the copolymer A to the maleimide side group in the copolymer B is 6:1, the rotating speed of the mixer is controlled to be 300r/min, and the mixing time is 20 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 600r/min and the vacuum degree to be-0.08 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 3
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 50 parts of PC resin (the melt index is 30g/10min), 40 parts of ABS resin (the melt index is 5g/10min), 10 parts of reversible reaction cross-linking agent, 0.1 part of nano indium tin oxide, 10760.5 parts of antioxidant, 1680.5 part of antioxidant, 0.5 part of lubricant silicone oil and 0.5 part of silicone master batch into a mixing stirrer for premixing, wherein a copolymer A in the reversible reaction cross-linking agent is an ethylene-methyl methacrylate copolymer with a furan functional group on a side group, a copolymer B is a styrene-acrylonitrile copolymer with a maleimide on a side group, the molar ratio of the furan on the side group in the copolymer A to the maleimide on the side group in the copolymer B is 2:1, the rotating speed of the mixer is controlled to be 200r/min, and the mixing time is 10 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 500r/min and the vacuum degree to be-0.08 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 4
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) 60 parts of PC resin (the melt index is 5g/10min), 35 parts of ABS resin (the melt index is 30g/10min), 5 parts of reversible reaction cross-linking agent, 0.8 part of nano indium tin oxide, 10980.2 parts of antioxidant, 6180.2 parts of antioxidant, 0.5 part of lubricant silicone master batch and 0.3 part of ethylene distearamide are added into a mixer for premixing, wherein the copolymer A in the reversible reaction cross-linking agent is an ethylene-methyl methacrylate copolymer and a polymethyl methacrylate blend (the mass ratio of the ethylene-methyl methacrylate copolymer to the polymethyl methacrylate is 1:1), the copolymer B is a styrene-acrylonitrile-maleic anhydride copolymer, the side group of which is a maleimide copolymer, and the side group of which is a maleimide copolymer B, controlling the rotating speed of the mixer to be 250r/min, and mixing for 15 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 500r/min and the vacuum degree to be-0.08 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 5
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) adding 65 parts of PC resin (the melt index is 15g/10min), 20 parts of ABS resin (the melt index is 15g/10min), 15 parts of reversible reaction cross-linking agent, 0.6 part of nano indium tin oxide, 10980.2 parts of antioxidant, 1680.2 parts of antioxidant and 0.5 part of lubricant silicone oil into a mixing stirrer for premixing, wherein the copolymer A in the reversible reaction cross-linking agent is a methyl methacrylate-butadiene-styrene copolymer and polymethyl methacrylate blend (the mass ratio of the methyl methacrylate-butadiene-styrene copolymer to the polymethyl methacrylate is 3: 1) containing a furan functional group on a side group, and the copolymer B is a blend of a styrene-acrylonitrile-maleic anhydride copolymer and a styrene-acrylonitrile-acrylic acid copolymer (the styrene-acrylonitrile-maleic anhydride copolymer and the styrene-acrylonitrile-acrylic acid copolymer) containing maleimide on a side group The mass ratio of the polymer is 1:1), the molar ratio of the furan in the side group in the copolymer A to the maleimide in the side group in the copolymer B is 2:1, the rotating speed of a mixer is controlled to be 150r/min, and the mixing time is 20 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 400r/min and the vacuum degree to be-0.07 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 6
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) 55 parts of PC resin (with the melt index of 22g/10min), 35 parts of ABS resin (with the melt index of 16g/10min), 10 parts of reversible crosslinking agent, 0.7 part of nano indium tin oxide, 10100.4 parts of antioxidant, 6180.4 parts of antioxidant and 0.6 part of lubricant pentaerythritol stearic acid are added into a mixer for premixing, wherein the copolymer A in the reversible crosslinking agent is a methyl methacrylate-butadiene-styrene copolymer, an ethylene-methyl methacrylate copolymer and a polymethyl methacrylate blend (the mass ratio of methyl methacrylate-butadiene-styrene copolymer, ethylene-methyl methacrylate copolymer and polymethyl methacrylate is 1:1: 1) with a side group containing furan functional groups, the copolymer B is a methyl methacrylate-butadiene-styrene copolymer with a side group containing maleimide, the molar ratio of the furan side group in the copolymer A to the maleimide side group in the copolymer B is 3:1, the rotating speed of a mixer is controlled to be 100r/min, and the mixing time is 10 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 350r/min and the vacuum degree to be-0.06 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 7
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) 50 parts of PC resin (the melt index is 15g/10min), 40 parts of ABS resin (the melt index is 8g/10min), 10 parts of reversible reaction cross-linking agent, 0.9 part of nano indium tin oxide, 10100.3 parts of antioxidant, 1680.3 parts of antioxidant and 0.6 part of lubricant silicone oil are added into a mixer for premixing, wherein the copolymer A in the reversible reaction cross-linking agent is a methyl methacrylate-butadiene-styrene copolymer, an ethylene-methyl methacrylate copolymer and a polymethyl methacrylate blend (the mass ratio of methyl methacrylate-butadiene-styrene copolymer, ethylene-methyl methacrylate copolymer and polymethyl methacrylate is 1: 2:1) of which the lateral groups contain furan functional groups, and the copolymer B is a blend of a methyl methacrylate-butadiene-styrene copolymer and a styrene-maleic anhydride copolymer (methyl propyl methacrylate-butadiene-styrene copolymer, ethylene-methyl methacrylate copolymer and polymethyl methacrylate) of which the lateral groups contain maleimide The mass ratio of the methyl enoate-butadiene-styrene copolymer to the styrene-maleic anhydride copolymer is 2:1), the molar ratio of the furan pendant group in the copolymer A to the maleimide pendant group in the copolymer B is 2:1, the rotating speed of a mixer is controlled to be 200r/min, and the mixing time is 5 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 350r/min and the vacuum degree to be-0.06 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Example 8
A laser welding easily-processed PC/ABS alloy material and a preparation method thereof comprise the following steps:
(1) 65 parts of PC resin (with the melt index of 10g/10min), 25 parts of ABS resin (with the melt index of 15g/10min), 10 parts of reversible reaction cross-linking agent, 0.8 part of nano indium tin oxide, 10100.2 parts of antioxidant, 1680.4 parts of antioxidant, 0.5 part of lubricant ethylene bis stearamide and 0.5 part of pentaerythritol stearic acid are added into a mixing stirrer for premixing, wherein the copolymer A in the reversible reaction cross-linking agent is a methyl methacrylate-butadiene-styrene copolymer and a polymethyl methacrylate blend (the mass ratio of the methyl methacrylate-butadiene-styrene copolymer to the polymethyl methacrylate is 2:1) of which the side groups contain furan functional groups, and the copolymer B is a blend of a methyl methacrylate-butadiene-styrene copolymer, a styrene-acrylonitrile-maleic anhydride copolymer and a styrene-maleic anhydride copolymer (methyl propyl methacrylate-butadiene-styrene copolymer and a methyl methacrylate copolymer) of which the side groups contain maleimide The mass ratio of the methyl enoate-butadiene-styrene copolymer, the styrene-acrylonitrile-maleic anhydride copolymer and the styrene-maleic anhydride copolymer is 1:1:2), the molar ratio of the side group furan in the copolymer A to the side group maleimide in the copolymer B is 4:1, the rotating speed of a mixer is controlled to be 250r/min, and the mixing time is 8 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 550r/min and the vacuum degree to be-0.08 MPa, and granulating to prepare the laser-welded and easily-processed PC/ABS alloy material.
Comparative examples and examples strips of 80mm by 10mm by 2mm were injection molded, the injection molded strips were placed in a staggered relationship with clear PMMA strips and irradiated with a 2mm beam of direct semiconductor laser (960 nm). And comparing the appearance of the welded sample strip by adjusting the laser power and the welding rate. The welding strength was evaluated by testing the tensile shear strength, which is the tensile strength/(width of weld-length).
From the above table, it can be seen that the weld strength is significantly improved after the addition of the reversible reaction crosslinking agent. In addition, the appearance of the welded sample strip is obviously improved after the near infrared absorbent nano indium tin oxide is reduced. Meanwhile, under the condition of high welding speed, the production efficiency is improved on the premise of keeping the welding strength. The invention proves that the invention is an effective method for preparing the PC/ABS alloy material with high welding strength and good product appearance.
Claims (10)
1. The laser welding workable PC/ABS alloy material is characterized in that: the paint comprises the following components in parts by weight:
PC resin: 40-70 parts of a binder;
ABS resin: 20-40 parts of a solvent;
reversible reactive crosslinking agent: 1-20 parts;
nano indium tin oxide: 0.1-1 part;
antioxidant: 0.1-1 part;
lubricant: 0.1 to 1 portion.
2. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the PC resin is bisphenol A aromatic PC, and the melt index is 5-30 g/10 min.
3. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the molecular weight of the ABS resin is 100000-200000, and the melt index is 5-30 g/10 min.
4. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the reversible reaction cross-linking agent consists of a copolymer A with a furan functional group on a lateral group and a copolymer B with a maleimide on a lateral group.
5. The laser-welded workable PC/ABS alloy material according to claim 4, wherein: the copolymer A is polymethyl methacrylate with a furan functional group on a side group, a methyl methacrylate-butadiene-styrene copolymer with a furan functional group on a side group, and one or more than two of ethylene-methyl methacrylate copolymers with a furan functional group on a side group;
the copolymer B is any one or the combination of more than two of polystyrene with lateral group containing maleimide, styrene-maleic anhydride copolymer with lateral group containing maleimide, styrene-acrylonitrile-maleic anhydride copolymer with lateral group containing maleimide, styrene-acrylonitrile-acrylic acid copolymer with lateral group containing maleimide and methyl methacrylate-butadiene-styrene copolymer with lateral group containing maleimide.
6. The laser-welded workable PC/ABS alloy material according to claim 4, wherein: the molar ratio of the side group furan in the copolymer A to the side group maleimide in the copolymer B in the reversible reaction cross-linking agent is 1-6: 1.
7. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the particle size of the nano indium tin oxide is 50-200 nm, and the purity is more than or equal to 95%.
8. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the antioxidant is a hindered classified antioxidant or phosphite antioxidant, and comprises any one or a combination of more than two of a commercially available antioxidant 1010, an antioxidant 1076, an antioxidant 1098, an antioxidant 168 and an antioxidant 618.
9. The laser-welded workable PC/ABS alloy material according to claim 1, wherein: the lubricant comprises any one or the combination of more than two of silicone oil, silicone master batch, ethylene distearamide and pentaerythritol stearic acid.
10. The method for preparing the laser welding workable PC/ABS alloy material of any one of claims 1-9, which comprises the following steps:
(1) adding PC resin, ABS resin, a reversible reaction cross-linking agent, nano indium tin oxide, an antioxidant and a lubricant into a mixing stirrer for premixing, and controlling the rotating speed of the mixing stirrer to be 100-300 r/min and the mixing time to be 5-20 min;
(2) and (2) melting, blending, extruding and granulating the mixture obtained in the step (1) by a double-screw extruder, controlling the extrusion temperature to be 230-270 ℃, the screw rotating speed to be 300-600 r/min and the vacuum degree to be-0.06-0.08 MPa, and granulating to prepare the laser-welded PC/ABS alloy material easy to process.
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| CN201911370458.5A CN111117189A (en) | 2019-12-26 | 2019-12-26 | Laser welding easily-processed PC/ABS alloy material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341782A (en) * | 2020-11-02 | 2021-02-09 | 上海普利特复合材料股份有限公司 | PC/ABS alloy material with low butadiene residue and preparation method thereof |
| CN115197525A (en) * | 2022-03-29 | 2022-10-18 | 江苏金发科技新材料有限公司 | PC/ABS resin composition for laser welding and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440639A (en) * | 2015-12-24 | 2016-03-30 | 上海锦湖日丽塑料有限公司 | Laser welding tractable polycarbonate composition and preparation method thereof |
| CN107337748A (en) * | 2017-08-02 | 2017-11-10 | 四川大学 | A kind of styrene copolymer with reversible crosslink key and preparation method thereof |
| CN108129820A (en) * | 2017-11-22 | 2018-06-08 | 上海锦湖日丽塑料有限公司 | A kind of high durable PC/ABS alloy materials and preparation method thereof |
| CN109504048A (en) * | 2018-11-13 | 2019-03-22 | 华南协同创新研究院 | Thermoreversibly crosslinked composition modified polylactic acid 3D printing wire rod of one kind and preparation method thereof |
-
2019
- 2019-12-26 CN CN201911370458.5A patent/CN111117189A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440639A (en) * | 2015-12-24 | 2016-03-30 | 上海锦湖日丽塑料有限公司 | Laser welding tractable polycarbonate composition and preparation method thereof |
| CN107337748A (en) * | 2017-08-02 | 2017-11-10 | 四川大学 | A kind of styrene copolymer with reversible crosslink key and preparation method thereof |
| CN108129820A (en) * | 2017-11-22 | 2018-06-08 | 上海锦湖日丽塑料有限公司 | A kind of high durable PC/ABS alloy materials and preparation method thereof |
| CN109504048A (en) * | 2018-11-13 | 2019-03-22 | 华南协同创新研究院 | Thermoreversibly crosslinked composition modified polylactic acid 3D printing wire rod of one kind and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 叶霖等: "利用呋喃/马来酰亚胺Diels-Alder 反应实现聚甲基丙烯酸丁酯/聚苯乙烯合金相容", 《应用化学》 * |
| 汪济奎等: "《新型功能材料导论》", 31 October 2014, 华东理工大学出版社 * |
| 蒋正武: "《水泥基自修复材料 理论与方法》", 31 January 2018, 同济大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341782A (en) * | 2020-11-02 | 2021-02-09 | 上海普利特复合材料股份有限公司 | PC/ABS alloy material with low butadiene residue and preparation method thereof |
| CN115197525A (en) * | 2022-03-29 | 2022-10-18 | 江苏金发科技新材料有限公司 | PC/ABS resin composition for laser welding and preparation method thereof |
| CN115197525B (en) * | 2022-03-29 | 2024-02-23 | 江苏金发科技新材料有限公司 | PC/ABS resin composition for laser welding and preparation method thereof |
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