CN113980418A - PC/ABS composite material and preparation method thereof, blow molding die and blow molding method - Google Patents

PC/ABS composite material and preparation method thereof, blow molding die and blow molding method Download PDF

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Publication number
CN113980418A
CN113980418A CN202111519433.4A CN202111519433A CN113980418A CN 113980418 A CN113980418 A CN 113980418A CN 202111519433 A CN202111519433 A CN 202111519433A CN 113980418 A CN113980418 A CN 113980418A
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abs
composite material
resin
abs composite
flame retardant
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CN202111519433.4A
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CN113980418B (en
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饶国庆
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Dongguan Qianjin Plastic Technology Co ltd
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Dongguan Qianjin Plastic Technology Co ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition

Abstract

The application provides a PC/ABS composite material and a preparation method thereof, a blow molding die and a blow molding method. The PC/ABS composite material comprises PC resin, ABS resin, a compatilizer, a toughening agent, a melt reinforcing agent, an ionic dispersing agent and a halogen-free flame retardant. The PC/ABS composite material has good flame retardant effect, good compatibility and good processing property stability.

Description

PC/ABS composite material and preparation method thereof, blow molding die and blow molding method
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a PC/ABS composite material and a preparation method thereof, a blow molding die and a blow molding method.
Background
The PC resin is polycarbonate which has the advantages of good mechanical property, high unnotched impact strength, stable size, good creep resistance and the like, the ABS resin is a polymer of acrylonitrile, butadiene and styrene, and the ABS resin has the advantages of good moldability, good impact resistance, good fluidity and the like, so that the composite material formed by compounding and complementing the PC and the ABS has the advantages of the PC and the ABS, and the solubility of the PC resin and the ABS resin is relatively close, which indicates that the PC resin and the ABS resin have certain compatibility, but the problem of unstable performance and the like still exists in the practical application process, so that the joint strength of the PC/ABS composite material product is low, the demolding effect is poor, the surface of a blow-molded product also has the defects of roughness, foaming, cracking and the like, and the flame retardant effect of the PC/ABS composite material is poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a PC/ABS composite material with better flame retardant effect, better compatibility and better processing property stability, a preparation method thereof, a blow molding die and a blow molding method.
The purpose of the invention is realized by the following technical scheme:
a PC/ABS composite material comprises PC resin, ABS resin, a compatilizer, a toughening agent, a melt reinforcing agent, an ionic dispersing agent and a halogen-free flame retardant.
In one embodiment, the mass ratio of the PC resin to the ABS resin is (5-6): (14-15).
In one embodiment, the toughening agent is at least one of a styrene-butadiene thermoplastic elastomer, a methyl methacrylate-butadiene-styrene terpolymer, an ethylene-methyl acrylate-glycidyl methacrylate, an ethylene-vinyl acetate copolymer, and a vulcanizing agent.
In one embodiment, the melt reinforcing agent is an acrylate based melt reinforcing agent, a styrene-acrylonitrile copolymer, and a thermoplastic elastomer.
In one embodiment, the compatibilizer is at least one of a styrene-maleic anhydride random copolymer and a modified maleic anhydride grafted ABS.
In one embodiment, the halogen-free flame retardant is at least one of a phosphorus flame retardant and a silicone flame retardant.
In one embodiment, the ionic dispersant is at least one of sodium dibutylnaphthalene sulfonate, sodium methyl-aminoethyl oleate, and a formaldehyde condensate of an alkyl naphthalene sulfonate.
A preparation method of a PC/ABS composite material is used for preparing the PC/ABS composite material of any one of the embodiments, and comprises the following steps:
obtaining PC resin and ABS resin;
respectively pretreating the PC resin and the ABS resin to remove water in the PC resin and the ABS resin;
and mixing, melting and extruding the pretreated PC resin, ABS resin, compatilizer, toughening agent, melt reinforcing agent, ionic dispersing agent and halogen-free flame retardant to obtain the PC/ABS composite material.
A blow mold for processing an article comprising the PC/ABS composite of any of the above embodiments, the blow mold comprising:
fixing a mold;
the movable mold and the fixed mold are combined and connected to form a blowing cavity, and the blowing cavity is used for arranging a parison and is used for preventing the parison from expanding during injection and blowing;
a core for stretching the parison and for injection blowing the parison.
A blow molding process for making an article comprising the PC/ABS composite of any of the above embodiments, the blow molding process comprising the steps of:
obtaining a parison;
and performing a blow molding operation on the parison by using a blow mold to obtain the article.
Compared with the prior art, the invention has at least the following advantages:
according to the PC/ABS composite material, the PC resin, the ABS resin and the compatilizer are compounded for use, so that the PC/ABS composite material has the advantages of both the PC resin and the ABS resin, namely, has better low-temperature toughness and higher thermal deformation temperature; the added halogen-free flame retardant and the added ionic dispersant effectively ensure the dispersion uniformity of the halogen-free flame retardant in the mixture of the PC resin and the ABS resin, effectively ensure the flame retardant effect of the PC/ABS composite material, and avoid the problem that the halogen-free flame retardant is floated and gathered on the surface of a formed product to influence the demolding effect during processing and forming, and the ionic dispersant effectively reduces the viscosity of the PC/ABS composite material, effectively improves the processing fluidity of the PC/ABS composite material, and further effectively improves the processing and forming performance of the PC/ABS composite material; in addition, the added toughening agent and the melt reinforcing agent are matched with the compatilizer, so that the elasticity and the toughness of the PC/ABS composite material are effectively improved, the mechanical property of the PC/ABS composite material is effectively improved, and the PC/ABS composite material meets the blow molding level requirement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for preparing a PC/ABS composite material according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a blow mold according to an embodiment of the present invention;
FIG. 3 is a partial view of the blow mold shown in FIG. 1;
FIG. 4 is a partial cross-sectional view taken along line A-A' of the blow mold shown in FIG. 3;
fig. 5 is a partial cross-sectional view of the blow mold shown in fig. 3 taken along line B-B'.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a PC/ABS composite material. The PC/ABS composite material comprises PC resin, ABS resin, a compatilizer, a toughening agent, a melt reinforcing agent, an ionic dispersing agent and a halogen-free flame retardant.
According to the PC/ABS composite material, the PC resin, the ABS resin and the compatilizer are compounded for use, so that the PC/ABS composite material has the advantages of both the PC resin and the ABS resin, namely, the PC/ABS composite material has better low-temperature toughness and higher heat deformation temperature; the added halogen-free flame retardant and the added ionic dispersant effectively ensure the dispersion uniformity of the halogen-free flame retardant in the mixture of the PC resin and the ABS resin, effectively ensure the flame retardant effect of the PC/ABS composite material, and avoid the problem that the halogen-free flame retardant is floated and gathered on the surface of a formed product to influence the demolding effect during processing and forming, and the ionic dispersant effectively reduces the viscosity of the PC/ABS composite material, effectively improves the processing fluidity of the PC/ABS composite material, and further effectively improves the processing and forming performance of the PC/ABS composite material; in addition, the added toughening agent and the melt reinforcing agent are matched with the compatilizer, so that the elasticity and the toughness of the PC/ABS composite material are effectively improved, the mechanical property of the PC/ABS composite material is effectively improved, and the PC/ABS composite material meets the blow molding level requirement.
It should be noted that, because the viscosity of the PC is relatively high, and in order to enhance the compatibility of the PC resin and the ABS resin, the viscosity is further increased by adding the compatibility to the mixture of the PC resin and the ABS resin, which further increases the viscosity of the PC/ABS composite material, and the fluidity is poor, and because of the addition of the flame retardant, the mechanical properties of the PC/ABS composite material are reduced, the brittleness and hardness are relatively high, which further makes the processing and molding of the PC/ABS composite material more difficult, and it is difficult to achieve the blow molding level requirement, in the present application, the ionic dispersant is added, which effectively increases the dispersion uniformity of the flame retardant, and alleviates the problems of the mechanical properties of the PC/ABS composite material being reduced and the mold release effect being poor due to the flame retardant aggregating on the surface of the PC/ABS composite material, and under the condition of ensuring the flame retardancy of the PC/ABS composite material, in addition, the ionic dispersing agent can form positive and negative ions which can be combined with molecular groups in PC resin and ABS resin, thereby reducing the staggered combination of PC resin molecules and ABS resin molecules, effectively reducing the viscosity of the PC/ABS composite material, further improving the fluidity of the PC/ABS composite material, being beneficial to the stable dispersion of a flame retardant and being beneficial to the processing and forming of the PC/ABS composite material. It should be noted that, if the added dispersant is a nonionic dispersant, the dispersibility of the flame retardant can only be improved, and in contrast, the ionic dispersant is more beneficial to the stable dispersion of the flame retardant, and the processability stability of the PC/ABS composite material is effectively improved.
In one embodiment, the PC/ABS composite material comprises the following components in parts by mass: 25-30 parts of PC resin; 70-75 parts of ABS resin; 3-8 parts of a compatilizer; 2-6 parts of a toughening agent; 1-5 parts of a melt reinforcing agent; 1-6 parts of ionic dispersant; 8-15 parts of halogen-free flame retardant.
If the using amount of the compatilizer, the toughening agent and the melt reinforcing agent is large, the viscosity of the PC/ABS composite material is easily over-high, so that the flowability of the PC/ABS composite material is poor, the processing and forming performance of the PC/ABS composite material is influenced, in order to ensure the flame retardance of the PC/ABS composite material, a sufficient amount of the flame retardant is required to be added, but the mechanical performance and the demolding effect of the PC/ABS composite material are greatly influenced when the sufficient amount of the flame retardant is added into the PC/ABS composite material, the ionic dispersing agent is further added to enhance the dispersibility of the flame retardant and improve the bonding strength of the flame retardant, the PC resin and the ABS resin, but the viscosity of the PC/ABS composite material is also reduced when the ionic dispersing agent is added, so that if the adding amount of the ionic dispersing agent is over-high, the viscosity of the PC/ABS composite material is reduced, thereby causing the PC/ABS composite material to be difficult to reach the blow molding grade; if the amount of the ionic dispersant is insufficient, the dispersibility of the flame retardant is poor, and the mechanical properties of the PC/ABS composite material are reduced, so that the PC/ABS composite material comprises the following components in parts by mass: 25-30 parts of PC resin; 70-75 parts of ABS resin; 3-8 parts of a compatilizer; 2-6 parts of a toughening agent; 1-5 parts of a melt reinforcing agent; 1-6 parts of ionic dispersant; 8 to 15 parts of halogen-free flame retardant, thereby effectively ensuring the flame retardant effect, compatibility, viscoelasticity and processing property stability of the PC/ABS composite material.
In one embodiment, the mass ratio of the PC resin to the ABS resin is (5-6): (14-15). It can be understood that the viscosity of the PC resin is higher and the shrinkage rate is smaller, and if the mass ratio of the PC resin to the ABS resin is too large, the viscosity of the PC/ABS composite material is too large, so that the dispersion uniformity of various substances in the PC/ABS composite material is influenced, the flowability of the PC/ABS composite material is poor, and more auxiliary materials are required to be added for adjustment, while the addition of more auxiliary materials further increases the dispersion difficulty of the PC/ABS composite material and reduces the compatibility of the PC/ABS composite material, and the addition of more auxiliary materials has an influence on the performance of the PC/ABS composite material; if the mass ratio of the PC resin to the ABS resin is too small, the PC/ABS composite material cannot have the advantages of the PC resin and the ABS resin, and the quality of the PC/ABS composite material is poor, so that the mass ratio of the PC resin to the ABS resin is (5-6): (14-15), the PC/ABS composite material is effectively ensured to have the advantages of both PC resin and ABS resin, and the PC/ABS composite material is ensured to have good fluidity, compatibility and processability stability.
In one embodiment, the molecular weight of the PC resin is greater than 2.5 x 105. It is understood that the molecular weight is greater than 2.5 x 105When the PC resin and the ABS resin are mixed and compatible, a stable net structure can be formed, the viscoelasticity of the PC/ABS composite material is enhanced, the blow molding effect of the PC/ABS composite material is ensured, and ions are matchedThe dispersing agent better ensures the dispersion stability of the flame retardant, and further improves the demolding effect and the flame retardant property of the PC/ABS composite material.
In one embodiment, the molecular weight of the ABS resin is greater than 3.0 x 105. It is understood that 3.0 x 105When the ABS resin and the PC resin are mixed and compatible, a stable net structure can be formed, the viscoelasticity of the PC/ABS composite material is enhanced, the PC/ABS composite material can reach the blow molding grade, the dispersion stability of the flame retardant is better ensured by matching with the ionic dispersing agent, and the demolding effect and the flame retardant property of the PC/ABS composite material are further improved.
In one embodiment, the toughening agent is at least one of a styrene-butadiene thermoplastic elastomer, a methyl methacrylate-butadiene-styrene terpolymer, an ethylene-methyl acrylate-glycidyl methacrylate, an ethylene-vinyl acetate copolymer, and a vulcanizing agent. It can be understood that the styrene-butadiene thermoplastic elastomer, the methyl methacrylate-butadiene-styrene terpolymer, the ethylene-methyl acrylate-glycidyl methacrylate, the ethylene-vinyl acetate copolymer and the vulcanizing agent can better improve the viscoelasticity of the PC/ABS composite material and better ensure the blow molding effect of the PC/ABS composite material.
In one embodiment, the melt reinforcing agent is an acrylate based melt reinforcing agent, a styrene-acrylonitrile copolymer, and a thermoplastic elastomer. It can be understood that the acrylic ester melt reinforcing agent, the styrene-acrylonitrile copolymer and the thermoplastic elastomer are matched with the plasticizer to further improve the viscoelasticity of the PC/ABS composite material and better ensure the blow molding effect of the PC/ABS composite material.
In one embodiment, the compatibilizer is at least one of a styrene-maleic anhydride random copolymer and a modified maleic anhydride grafted ABS. It can be understood that the styrene-maleic anhydride random copolymer and the modified maleic anhydride grafted ABS can better realize the combination of the PC resin and the ABS resin, thereby effectively ensuring the compatibility of the PC resin and the ABS resin and effectively improving the mechanical property of the PC/ABS composite material.
In one embodiment, the halogen-free flame retardant is at least one of a phosphorus flame retardant and an organosilicon flame retardant, so that the flame retardance of the PC/ABS composite material is effectively ensured.
In one embodiment, the phosphorus flame retardant is at least one of triphenyl phosphate, resorcinol-diphenyl diphosphate and diphenyl phosphate, which further effectively ensures the flame retardant effect of the PC/ABS composite material.
In one embodiment, the phosphorus flame retardant is used in an amount of 8 wt% to 12 wt%, which further effectively ensures the flame retardant effect of the PC/ABS composite material.
In one embodiment, the PC/ABS composite further comprises an anti-dripping agent, which is effective to ensure the flame retardant effect of the PC/ABS composite.
In one embodiment, the anti-dripping agent is polytetrafluoroethylene, which further effectively ensures the flame retardant effect of the PC/ABS composite.
In one embodiment, the polytetrafluoroethylene is used in an amount of 0.3 wt% to 0.5 wt%, which further effectively ensures the flame retardant effect of the PC/ABS composite material.
In one embodiment, the ionic dispersant is at least one of sodium dibutylnaphthalene sulfonate, sodium methyl-aminoethyl oleate and formaldehyde condensate of alkyl naphthalene sulfonate, which effectively ensures the dispersion effect and dispersion stability of the flame retardant and effectively ensures the processing fluidity of the PC/ABS composite material.
The application also provides a preparation method of the PC/ABS composite material, which is used for preparing the PC/ABS composite material of any embodiment. The preparation method of the PC/ABS composite material comprises the following steps: obtaining PC resin and ABS resin; respectively pretreating the PC resin and the ABS resin to remove water in the PC resin and the ABS resin; and (3) mixing, melting and extruding the pretreated PC resin, ABS resin, compatilizer, toughening agent, melt reinforcing agent, ionic dispersing agent and halogen-free flame retardant to obtain the PC/ABS composite material.
According to the preparation method of the PC/ABS composite material, the PC resin and the ABS resin are pretreated, so that the moisture content of the PC resin and the ABS resin is reduced, the melt extrusion effect of the PC/ABS composite material is ensured, the pretreated PC resin, the ABS resin, the compatilizer, the flexibilizer, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant are mixed, melted and extruded, the mixing and dispersing effect of the PC/ABS composite material is ensured, and the mechanical property and the processability stability of the PC/ABS composite material are improved.
Referring to fig. 1, in order to better understand the preparation method of the PC/ABS composite material of the present application, the following further explains the preparation method of the PC/ABS composite material of the present application, and the preparation method of the PC/ABS composite material of an embodiment includes some or all of the following steps:
s100, obtaining the PC resin and the ABS resin. It can be understood that, because the PC resin has the advantages of good mechanical property, high unnotched impact strength, good dimensional stability, good creep resistance and the like, while the ABS resin has the advantages of good moldability, good impact resistance, good fluidity and the like, and the solubility of the PC resin and the ABS resin is relatively close, the PC resin and the ABS resin have certain compatibility, and in order to obtain the plastic alloy with good viscoelasticity, good impact resistance, good moldability, good fluidity and good joint strength, the PC resin and the ABS resin are further obtained, so that the composite material formed by compounding and complementing the PC resin and the ABS resin has the advantages of the PC resin and the ABS resin.
And S200, respectively carrying out pretreatment on the PC resin and the ABS resin to remove moisture in the PC resin and the ABS resin. It can be understood that the PC resin and the ABS resin have certain water absorption capacity, so that in the placing process of the PC resin and the ABS resin, partial water is accumulated in the PC resin and the ABS resin, and the water has great influence on the mixing, melting and extruding of the PC resin and the ABS resin, and the mechanical property of the PC/ABS composite material is reduced.
S300, mixing, melting and extruding the pretreated PC resin, the pretreated ABS resin, the compatilizer, the toughening agent, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant to obtain the PC/ABS composite material. The method can be understood that the pretreated PC resin, the pretreated ABS resin, the compatilizer, the toughening agent, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant are mixed, melted and extruded, so that the mixing and dispersing effect of the PC/ABS composite material is ensured, and the mechanical property and the processing property stability of the PC/ABS composite material are improved.
According to the preparation method of the PC/ABS composite material, the PC resin and the ABS resin are pretreated, so that the moisture content of the PC resin and the ABS resin is reduced, the melt extrusion effect of the PC/ABS composite material is ensured, the pretreated PC resin, the ABS resin, the compatilizer, the flexibilizer, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant are mixed, melted and extruded, the mixing and dispersing effect of the PC/ABS composite material is ensured, and the mechanical property and the processability stability of the PC/ABS composite material are improved.
In one embodiment, the mixing, melting and extruding operation of the pretreated PC resin, the pretreated ABS resin, the compatibilizer, the toughening agent, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant specifically comprises the following steps:
adding PC resin, ABS resin, ionic dispersing agent and halogen-free flame retardant into the front section of a screw extruder to perform first screw extrusion treatment to obtain a flame-retardant mixture. It will be appreciated that since the compatibilizer, toughening agent and melt enhancer are capable of bonding to the PC resin and ABS resin respectively, namely, molecular bonds are respectively formed with PC resin molecules and ABS resin molecules, so that the viscosities of the PC resin and the ABS resin are greatly increased, further, the flame retardant is difficult to be uniformly dispersed, if the shearing force is increased or the time and the temperature of spiral extrusion are increased, the macromolecular structures of the PC resin and the ABS resin are influenced, the viscosity of the PC resin and the ABS resin is greatly reduced, the viscoelasticity and the mechanical property of the PC/ABS composite material are influenced, therefore, in the application, the PC resin, the ABS resin ionic dispersing agent and the halogen-free flame retardant are subjected to spiral melt extrusion, the flame retardant, the PC resin and the ABS resin can be uniformly mixed in a short extrusion time and at a low extrusion temperature, and the ionic dispersing agent is added to effectively ensure the stable dispersion of the flame retardant.
And further, when the flame-retardant mixture reaches the middle section of the screw extruder, adding the toughening agent, the melt reinforcing agent and the compatilizer into the middle section of the screw extruder for secondary screw extrusion treatment. It can be understood that under the condition that the flame retardant, the PC resin and the ABS resin are uniformly mixed, the toughening agent, the melt reinforcing agent and the compatilizer are added for spiral extrusion, so that the dispersion uniformity of all substances in the PC/ABS composite material is effectively improved, the flowability, the viscoelasticity and the mechanical strength of the PC/ABS composite material are effectively improved, and the PC/ABS composite material can reach the blow molding grade.
The mixing, melting and extruding operations can be understood to lead the PC resin, the ABS resin ionic dispersing agent and the halogen-free flame retardant to be subjected to spiral melting and extruding firstly, so that the flame retardant, the PC resin and the ABS resin can be uniformly mixed in a short time at a low temperature, the ionic dispersing agent is added to effectively ensure the dispersion stability of the flame retardant, and then the toughening agent, the melt reinforcing agent and the compatilizer are added to carry out spiral extrusion, so that the uniform dispersion degree of all substances in the PC/ABS composite material is effectively improved, the fluidity, the viscoelasticity and the mechanical strength of the PC/ABS composite material are effectively improved, and the PC/ABS composite material can reach the blow molding level.
In one embodiment, the mixing, melting and extruding operation of the pretreated PC resin, the pretreated ABS resin, the compatibilizer, the toughening agent, the melt reinforcing agent, the ionic dispersing agent and the halogen-free flame retardant specifically comprises the following steps:
adding the PC resin, the ABS resin, the ionic dispersing agent and the halogen-free flame retardant into a screw extruder to carry out screw extrusion granulation operation, thereby obtaining the composite flame-retardant PC/ABS semi-finished product. It can be understood that, because the compatilizer, the flexibilizer and the melt reinforcing agent can be respectively connected with the PC resin and the ABS resin, namely molecular bonds can be respectively formed with PC resin molecules and ABS resin molecules, the viscosity of the PC resin and the ABS resin is greatly increased, and further the flame retardant is difficult to disperse uniformly, if the shearing force is increased or the time and the temperature of spiral extrusion are increased, the macromolecular structures of the PC resin and the ABS resin are influenced, the viscosity of the PC resin and the ABS resin is greatly reduced, and the viscoelasticity and the mechanical property of the PC/ABS composite material are influenced, therefore, in the application, the ionic type dispersing agent and the halogen-free flame retardant of the PC resin and the ABS resin are subjected to spiral melt extrusion firstly, the uniform mixing of the flame retardant, the PC resin and the ABS resin can be realized in a shorter time and at a lower temperature, and the addition of the ionic type dispersing agent effectively ensures the stable dispersion of the flame retardant, in addition, the PC resin, the ABS resin ionic dispersing agent and the halogen-free flame retardant which are spirally melt-extruded are formed into a granular composite flame-retardant PC/ABS semi-finished product, which is beneficial to the rapid mixing of the composite flame-retardant PC/ABS semi-finished product, the toughening agent, the melt reinforcing agent and the compatilizer.
And further, adding the composite flame-retardant PC/ABS semi-finished product, the toughening agent, the melt reinforcing agent and the compatilizer into a screw extruder to perform mixing screw extrusion granulation operation. The PC/ABS composite material has the beneficial effects that the PC resin, the ABS resin ionic dispersing agent and the halogen-free flame retardant which are spirally melt-extruded are formed into the granular composite flame-retardant PC/ABS semi-finished product, so that the composite flame-retardant PC/ABS semi-finished product can be better melt-mixed with the toughening agent, the melt reinforcing agent and the compatilizer in a shorter extrusion time and at a lower extrusion temperature, the dispersion uniformity of all substances in the PC/ABS composite material is improved, the flowability, the viscoelasticity and the mechanical strength of the PC/ABS composite material are ensured, and the PC/ABS composite material is further ensured to reach the blow molding grade.
It can be understood that the above-mentioned mixing melt extrusion operation makes the PC resin, ABS resin ionic dispersing agent and halogen-free flame retardant undergo the process of spiral melt extrusion first, and can implement uniform mixing of flame retardant, PC resin and ABS resin in a short time and at a low temperature, and the addition of ionic dispersing agent can effectively ensure the dispersion stability of flame retardant, and in addition, the PC resin, ABS resin ionic dispersing agent and halogen-free flame retardant which are spirally melt extruded can be formed into granular composite flame-retardant PC/ABS semi-finished product, so that it is favourable for quickly mixing composite flame-retardant PC/ABS semi-finished product, toughening agent, melt reinforcing agent and compatilizer, i.e. the composite flame-retardant PC/ABS semi-finished product can be better melt-mixed with toughening agent, melt reinforcing agent and compatilizer in a short extrusion time and at a low extrusion temperature, so as to raise the dispersion uniformity of all the substances in PC/ABS composite material, the flowability, viscoelasticity and mechanical strength of the PC/ABS composite material are ensured, and the PC/ABS composite material can reach the blow molding grade.
The present application also provides a blow mold for processing an article comprising the PC/ABS composite of any of the above embodiments. The blow mold comprises a fixed mold, a movable mold and a mold core. The movable mould and the fixed mould are combined and connected to form a blowing cavity, and the blowing cavity is used for arranging the parison and is used for preventing the parison from expanding during injection blowing. The core is used for stretching the parison and for injection-blowing the parison.
The above-described blow mold, in which the blow cavity is used for setting the parison and for hindering the parison from expanding at the time of injection blowing, and the core is used for stretching the parison and for injection blowing the parison, ensures blow molding of the PC/ABS composite article.
Referring to fig. 2, in order to better understand the blow mold 10 of the present application, the blow mold 10 of the present application is further explained below, and the blow mold 10 of an embodiment includes a fixed mold 100, a movable mold 200, and a core 300. The movable mold 200 is combined with the fixed mold 100 to form a blow cavity 301, and the blow cavity 301 is used for arranging the parison and is used for blocking the expansion of the parison during injection blowing. The core 300 is used for stretching the parison and for injection-blowing the parison.
The blow mold 10 described above, the blow cavity 301 for setting the parison and for hindering parison expansion at the time of injection blowing, and the core 300 for stretching the parison and for injection blowing the parison, ensures blow molding of the PC/ABS composite article.
Referring to fig. 2 and 3, in one embodiment, the movable mold 200 includes a movable mold body 210 and a positioning member 220, the positioning member 220 is disposed on a side of the movable mold body 210 close to the stationary mold 100, and one end of the positioning member 220 is connected to the movable mold body 210. The fixed die 100 is provided with a positioning hole 101 and a sliding cavity 102 which are communicated, the other end of the positioning piece 220 penetrates through the positioning hole 101 and is clamped in the sliding cavity 102, and the positioning piece is connected with the fixed die 100 in a sliding manner. It can be understood that, in the process of blow molding the PC/ABS composite parison, the movable mold 200 and the fixed mold 100 move oppositely so as to demold the PC/ABS composite product, and if the movable mold 200 and the fixed mold 100 cannot be accurately abutted against each other after moving, the shape of the PC/ABS composite product is affected, therefore, in the present application, the fixed mold 100 is provided with the positioning hole 101 and the sliding cavity 102 which are communicated, one end of the positioning member 220 is connected with the movable mold body 210, and the other end of the positioning member 220 penetrates through the positioning hole 101 and is clamped in the sliding cavity 102, so that the movable mold 200 and the fixed mold 100 can keep the relative abutting accuracy in the moving process, thereby ensuring the stable preparation of the PC/ABS composite product and reducing the fraction defective of the PC/ABS composite product.
Referring to fig. 2, 3 and 4, in one embodiment, the movable mold 200 includes two positioning members 220, and a mold-releasing slide 221 is disposed at one end of each positioning member 220 close to the fixed mold 100. The fixed die 100 is provided with a demoulding slide cavity 103, and the demoulding slide cavity 103 is communicated with the slide cavity 102. The movable mold 200 further includes a demolding rod 230 and a top block 240 connected to each other, the demolding rod 230 is disposed at the demolding sliding cavity 103, the demolding rod 230 is slidably connected to the fixed mold 100, two ends of the demolding rod 230 are respectively clamped on the demolding slide ways 221 of the two positioning members 220, the demolding rod 230 is respectively slidably connected to the two positioning members 220, the top block 240 is disposed at the demolding sliding cavity 103, and the demolding rod 230 drives the top block 240 to move in a direction away from or close to the blowing cavity 301. The top block 240 protrudes from the mold release slide cavity 103 and is located in the blow mold cavity 301 when the two positioning members 220 drive the mold release rod 230 to move in a direction away from or close to the movable mold 200, and the top block 240 is located in the mold release slide cavity 103 when the movable mold 200 abuts against the fixed mold 100. It can be understood that because the PC/ABS composite material contains the PC resin, the toughening agent, the melt reinforcing agent and the halogen-free flame retardant, the shrinkage rate of the PC/ABS composite material is small, the demolding property of the obtained PC/ABS composite material is poor, the demolding effect of the obtained PC/ABS composite material product is poor, if manual demolding is adopted, a large amount of manpower and material resources are needed, and the demolding efficiency is low; if a demoulding device is added for automatic demoulding, components such as electric equipment and a mechanical arm need to be additionally added for matching, and the complexity and the energy consumption of a blow moulding program are increased, therefore, in order to realize the automatic demoulding of a PC/ABS composite material product under the condition of not changing the blow moulding program and not increasing the components such as the electric equipment, in the application, the top block 240 protrudes out of the demoulding slide cavity 103 and is positioned in the blow moulding cavity 301 when the two positioning pieces 220 drive the demoulding rod 230 to move towards the direction far away from or close to the movable mould 200, and the top block 240 is positioned in the demoulding slide cavity 103 when the movable mould 200 is abutted with the fixed mould 100, namely when the fixed mould 100 is abutted with the movable mould 200, the top block 240 is positioned in the demoulding slide cavity 103, then, when the movable mould 200 moves towards the direction far away from the fixed mould 100, the positioning columns drive the demoulding rod 230 to move towards the direction close to the movable mould 200, and further drive the demoulding rod 230 to move towards the direction close to the movable mould 200, the top block 240 protrudes out of the demolding sliding cavity 103 and is positioned in the blowing cavity 301, so that the PC/ABS composite material product clamped on the fixed mold 100 is pushed out, further, demolding of the PC/ABS composite material product is realized in the relative movement process of the movable mold 200 and the fixed mold 100, no electric equipment is used, no blowing program is added, and simplified demolding of the PC/ABS composite material product is realized.
In one embodiment, the stripper rod and the top block are of one-piece construction. The ejector block is connected with the ejector rod through the ejector rod, and the ejector block is connected with the ejector rod through the ejector rod.
In one embodiment, the top block is tightly abutted with the fixed die when the movable die is abutted with the fixed die, so that the influence of the top block on the forming shape of the PC/ABS composite material product is reduced, and the reject ratio of the PC/ABS composite material product is reduced.
Referring to fig. 2, 3 and 5, in one embodiment, the movable mold 200 is provided with an auxiliary slide way 250 and an auxiliary slide cavity 260, the auxiliary slide way 250 is communicated with the auxiliary slide cavity 260, the auxiliary slide cavity 260 is communicated with the blow molding cavity 301, and the movable mold 200 further comprises an auxiliary demolding assembly 270, the auxiliary demolding assembly 270 comprises an auxiliary demolding rod 271, a top rod 272 and an elastic member 273, the auxiliary demolding rod 271 is disposed at the auxiliary sliding cavity 260, the auxiliary demolding rod 271 is disposed through the top rod 272, and the auxiliary demoulding rod 271 is connected with the fixed mould 100 in a sliding way, the top rod 272 is arranged at the auxiliary slideway 250, and the top rod 272 is connected with the fixed mold 100 in a sliding way, when the top rod 272 is abutted against the fixed mold 100 and moves towards the fixed mold 100, the auxiliary demoulding rod 271 is driven to move towards the direction far away from the blowing cavity 301, the elastic piece 273 is sleeved at one end of the top rod 272, one end of the elastic member 273 abuts on the movable mold 200, and the other end of the elastic member 273 abuts on the auxiliary ejector rod 271. The auxiliary demoulding rod 271 compresses the elastic member 273 when the ejector rod 272 drives the auxiliary demoulding rod 271 to move towards the direction away from the blowing cavity 301, the auxiliary demoulding rod 271 is positioned in the auxiliary sliding cavity 260 when the movable mould 200 abuts against the fixed mould 100, and the auxiliary demoulding rod 271 protrudes out of the auxiliary sliding cavity 260 and is positioned in the blowing cavity 301 when the movable mould 200 is adjacent to the fixed mould 100. It can be understood that because the PC/ABS composite material contains the PC resin, the toughening agent, the melt reinforcing agent and the halogen-free flame retardant, the shrinkage rate of the PC/ABS composite material is small, the demolding property of the obtained PC/ABS composite material is poor, the demolding effect of the obtained PC/ABS composite material product is poor, if manual demolding is adopted, a large amount of manpower and material resources are needed, and the demolding efficiency is low; if a demoulding device is added for automatic demoulding, components such as electric equipment and a mechanical arm need to be additionally added for matching, and the complexity and the energy consumption of a blowing procedure are increased, therefore, in order to realize the automatic demoulding of a PC/ABS composite material product under the condition of not changing the blowing procedure and not increasing components such as electric equipment, in the application, an auxiliary demoulding rod 271 compresses an elastic member 273 when a top rod 272 drives the auxiliary demoulding rod 271 to move towards the direction far away from a blowing cavity 301, the auxiliary demoulding rod 271 is positioned in an auxiliary sliding cavity 260 when a movable mould 200 is abutted with a fixed mould 100, the auxiliary demoulding rod 271 protrudes out of the auxiliary sliding cavity 260 and is positioned in the blowing cavity 301 when the movable mould 200 is adjacent to the fixed mould 100, namely, when the movable mould 200 is abutted with the fixed mould 100, an auxiliary top block 240 is positioned in the auxiliary sliding cavity 260, the fixed mould 273 is in a compression state, but the fixed mould 100 also obstructs the pushing of the top rod 272 at this time, and the ejector 272 hinders the push-out of the auxiliary ejector rod 271, and then, when the movable mold 200 moves in a direction away from the fixed mold 100, the distance between the fixed mold 100 and the movable mold 200 gradually increases, the push-out hindrance of the ejector 272 disappears, the compressed elastic member 273 pushes the auxiliary ejector rod 271 to move toward the fixed mold 100, the auxiliary demoulding rod 271 drives the top rod 272 to move towards the direction close to the fixed mould 100, at this time, the auxiliary demoulding rod 271 protrudes out of the auxiliary sliding cavity 260 and is positioned in the blowing cavity 301, so that the PC/ABS composite material product clamped on the movable mould 200 is pushed out, further realizing the demoulding of the PC/ABS composite material product in the relative movement process of the movable mould 200 and the fixed mould 100 without using any electric equipment, and the simplified demoulding of the PC/ABS composite material product is realized without adding a blow molding procedure.
Referring to fig. 2, 3 and 5, in one embodiment, the auxiliary slide chamber 260 includes a first auxiliary slide chamber 261 and a second auxiliary slide chamber 262 that are connected to each other, the first auxiliary slide chamber 261 is connected to the auxiliary chute 250, and the second auxiliary slide chamber 262 is connected to the blow molding chamber 301. The secondary stripper assembly 270 includes two ejector pins 272. The auxiliary demoulding rod 271 comprises an auxiliary demoulding rod main body 2711 and an auxiliary top block 2712 which are connected, the auxiliary demoulding rod main body 2711 is arranged in the first auxiliary sliding cavity 261, the auxiliary demoulding rod main body 2711 is slidably connected with the movable mould 200, two ends of the auxiliary demoulding rod main body 2711 are respectively penetrated through the two top rods 272, the auxiliary top block 2712 is arranged at the second auxiliary sliding cavity 262, and the auxiliary top block 2712 is slidably connected with the movable mould 200. The two ejector rods 272 drive the auxiliary demolding rod main body 2711 and the auxiliary demolding block 2712 to move towards the direction far away from the blowing cavity 301 when being abutted against the fixed die 100 and moving towards the fixed die 100, the auxiliary demolding rod main body 2711 compresses the elastic piece 273 when the two ejector rods 272 drive the auxiliary demolding rod main body 2711 to move towards the direction far away from the blowing cavity 301, the auxiliary demolding block 2712 is positioned in the second auxiliary sliding cavity 262 when the movable die 200 is abutted against the fixed die 100, and the auxiliary demolding block 2712 protrudes out of the second auxiliary sliding cavity 262 and is positioned in the blowing cavity 301 when the movable die 200 is adjacent to the fixed die 100, so that demolding of the PC/ABS composite material product is better ensured in the relative movement process of the movable die 200 and the fixed die 100, no electric equipment is used, no blowing program is required to be added, and simplified demolding of the PC/ABS composite material product is realized.
In one embodiment, the resilient member is a spring.
In one embodiment, the auxiliary demoulding rod main body and the auxiliary ejector block are of an integrally formed structure, so that the connection stability and the connection compactness of the auxiliary demoulding rod main body and the auxiliary ejector block are improved, and the structural stability and the structural compactness of the movable mould are further ensured.
In one embodiment, the auxiliary top block is tightly abutted with the movable die when the movable die is abutted with the fixed die, so that the influence of the auxiliary top block on the forming shape of the PC/ABS composite material product is reduced, and the reject ratio of the PC/ABS composite material product is reduced.
Referring to fig. 2, 3 and 4, in one embodiment, the fixed mold 100 is provided with a first cold water circulation pipeline, and the first cold water circulation pipeline is distributed on the periphery of the blowing cavity 301, so as to ensure the low temperature of the inner wall of the blowing cavity 301 and promote the rapid curing molding of the PC/ABS composite material product.
Referring to fig. 2, fig. 3 and fig. 5, in one embodiment, the movable mold 200 is provided with a second cold water circulation pipeline, and the second cold water circulation pipeline is distributed on the periphery of the blowing cavity 301, so as to ensure the low temperature of the inner wall of the blowing cavity 301 and promote the rapid curing molding of the PC/ABS composite material product.
The present application also provides a blow molding process for making an article comprising the PC/ABS composite of any of the above embodiments. The blow molding method of an embodiment includes some or all of the following steps: obtaining a parison; and performing a blow molding operation on the parison by using the blow mold to obtain the product. In this embodiment, the blow mold includes a stationary mold, a movable mold, and a core. The movable mould and the fixed mould are combined and connected to form a blowing cavity, and the blowing cavity is used for arranging the parison and is used for preventing the parison from expanding during injection blowing. The core is used for stretching the parison and for injection-blowing the parison.
According to the blow molding method, the blow molding die is used for blow molding the parison, so that the demolding effect of the PC/ABS composite material product is effectively ensured under the condition that the blow molding process is not increased, and the preparation efficiency of the PC/ABS composite material product is effectively improved.
In one embodiment, the operation of blowing the parison with the blow mold is as follows: performing first blow molding treatment on the parison by using a blow mold; subsequently, the parison after the first blow molding process is subjected to a second cold air blow molding process. The parison containing the PC/ABS composite material has better viscoelasticity, the dripping of the parison can be better reduced after the parison is subjected to high-temperature treatment, and the parison is subjected to first blow molding treatment by using a blow mold, namely the blow molding is performed on the hot-melt parison by using the blow mold, so that the parison is expanded to be attached to the inner wall of a blow molding cavity, and the blow molding of a PC/ABS composite material product is ensured; and because when the hot melt parison is attached to the inner wall of the blowing cavity, the temperature of the outer wall of the parison is reduced and solidification occurs, but the temperature of the inner wall of the parison is reduced slower than that of the outer wall, so that the parison is wrinkled or textured under the action of internal stress, and the appearance of the PC/ABS composite material product is influenced.
In one implementation, blow molding of the PC/ABS composite article is ensured by blowing the parison with a blow mold under low pressure conditions.
In one embodiment, the first blowing treatment of the parison by the blow mold is to heat the parison, then stretch the parison, blow out the stretched parison by normal temperature gas or heated gas until the parison is close to the inner wall of the blow mold, and stop blowing out the normal temperature gas or the heated gas, so that the blow molding of the PC/ABS composite product is realized.
In one embodiment, the second cold air blowing treatment is performed on the parison after the first blowing treatment, namely, normal-temperature gas or heated gas is stopped being blown out, meanwhile, the refrigeration gas is blown out to the stretched parison until the parison is tightly attached to the inner wall of the blowing mold, and cold air is continuously blown out until the parison is cooled and solidified, so that the temperature difference between the inner wall and the outer wall of the parison is reduced, the internal stress of the parison is further reduced, and the appearance of the PC/ABS composite product is ensured.
In one embodiment, the blow molding of the PC/ABS composite article is ensured by performing the blow molding operation on the parison using the blow mold under the circulation of cooling water.
In one embodiment, the temperature of the refrigerant gas is the same as the temperature of the cooling water, which better reduces the internal stresses in the parison, ensuring the appearance of the PC/ABS composite article.
In one embodiment, the temperature of the refrigerant gas is the same as the temperature of the inner walls of the blow mold, better reducing the internal stresses of the parison and ensuring the appearance of the PC/ABS composite article.
In one embodiment, the heated gas is at the same temperature as the parison, which better reduces the internal stress of the parison, ensuring the appearance of the PC/ABS composite article.
Compared with the prior art, the invention has at least the following advantages:
according to the PC/ABS composite material, the PC resin, the ABS resin and the compatilizer are compounded for use, so that the PC/ABS composite material has the advantages of both the PC resin and the ABS resin, namely, has better low-temperature toughness and higher thermal deformation temperature; the added halogen-free flame retardant and the added ionic dispersant effectively ensure the dispersion uniformity of the halogen-free flame retardant in the mixture of the PC resin and the ABS resin, effectively ensure the flame retardant effect of the PC/ABS composite material, and avoid the problem that the halogen-free flame retardant is floated and gathered on the surface of a formed product to influence the demolding effect during processing and forming, and the ionic dispersant effectively reduces the viscosity of the PC/ABS composite material, effectively improves the processing fluidity of the PC/ABS composite material, and further effectively improves the processing and forming performance of the PC/ABS composite material; in addition, the added toughening agent and the melt reinforcing agent are matched with the compatilizer, so that the elasticity and the toughness of the PC/ABS composite material are effectively improved, the mechanical property of the PC/ABS composite material is effectively improved, and the PC/ABS composite material meets the blow molding level requirement.
Some specific examples are listed below, and if mentioned%, all are expressed in weight percent. It should be noted that the following examples are not intended to be exhaustive of all possible cases, and that the materials used in the following examples are commercially available without specific recitation.
Example 1
25kg of PC resin is obtained; 70kg of ABS resin; 3kg of compatilizer; 2kg of toughening agent; 1kg of melt reinforcing agent; 1kg of ionic dispersant; 8kg of halogen-free flame retardant;
adding PC resin, ABS resin, ionic dispersing agent and halogen-free flame retardant into the front section of a screw extruder for melt extrusion, adding toughening agent, melt reinforcing agent and compatilizer into the middle section of the screw extruder for melt extrusion, and granulating to obtain a PC/ABS composite material;
preparing a parison from the PC/ABS composite material to obtain a parison;
and (3) placing the parison in a blow molding die for hot air and cold air blow molding, and demolding to obtain the PC/ABS composite material product.
Example 2
Obtaining 26kg of PC resin; 72kg of ABS resin; 4kg of compatilizer; 4kg of toughening agent; 2kg of melt reinforcing agent; 2kg parts of ionic dispersant; 10kg of halogen-free flame retardant;
adding PC resin, ABS resin, ionic dispersing agent and halogen-free flame retardant into the front section of a screw extruder, performing melt extrusion, and granulating to obtain a semi-finished PC/ABS composite material;
adding the semi-finished PC/ABS composite material, the toughening agent, the melt reinforcing agent and the compatilizer into the front section of the screw extruder for melt extrusion and granulation to obtain the PC/ABS composite material;
preparing a parison from the PC/ABS composite material to obtain a parison;
and (3) placing the parison in a blow molding die for hot air and cold air blow molding, and demolding to obtain the PC/ABS composite material product.
Example 3
Obtaining 28kg of PC resin; 74kg of ABS resin; 6kg of compatilizer; 5kg of toughening agent; 4kg of melt reinforcing agent; 4kg of ionic dispersant; 12kg of halogen-free flame retardant;
adding PC resin, ABS resin, ionic dispersing agent and halogen-free flame retardant into the front section of a screw extruder, performing melt extrusion, and granulating to obtain a semi-finished PC/ABS composite material;
adding the semi-finished PC/ABS composite material, the toughening agent, the melt reinforcing agent and the compatilizer into the front section of the screw extruder for melt extrusion and granulation to obtain the PC/ABS composite material;
preparing a parison from the PC/ABS composite material to obtain a parison;
and (3) placing the parison in a blow molding die for hot air and cold air blow molding, and demolding to obtain the PC/ABS composite material product.
Example 4
30kg of PC resin is obtained; 75kg of ABS resin; 8kg of compatilizer; 6kg of toughening agent; 5kg of melt reinforcing agent; 6kg of ionic dispersing agent; 15kg of halogen-free flame retardant;
adding PC resin, ABS resin, ionic dispersing agent and halogen-free flame retardant into the front section of a screw extruder for melt extrusion, adding toughening agent, melt reinforcing agent and compatilizer into the middle section of the screw extruder for melt extrusion, and granulating to obtain a PC/ABS composite material;
preparing a parison from the PC/ABS composite material to obtain a parison;
and (3) placing the parison in a blow molding die for hot air and cold air blow molding, and demolding to obtain the PC/ABS composite material product.
The PC/ABS composite materials of examples 1-4 were tested for their performance and the PC/ABS composite materials of examples 1-4 were tested for their appearance.
The physical property test method comprises the following steps:
1. ASTM D128 test for melt fingers;
2. ASTM D638 measures tensile strength;
3. ASTM D256 measures notched impact strength;
4. ASTM D1525 Vicat softening point (. degree. C.).
The performance test results of the PC/ABS composite materials of the embodiments 1-4 and the appearance test results of the PC/ABS composite material products of the embodiments 1-4 are as follows:
table 1: performance test results of the PC/ABS composite materials and appearance test results of the PC/ABS composite material products in examples 1 to 4
Figure BDA0003408206150000191
As can be seen from table 1, the mechanical properties and flame retardancy of the PC/ABS composite materials of examples 1 to 4 are greatly improved, and at the same time, the PC/ABS composite materials of examples 1 to 4 have a high heat-resistant temperature, and the impact toughness and the flowability are high, i.e., the flame retardancy of the materials is improved while the good mechanical properties are maintained, and the mechanical properties, the flame retardancy and the heat-resistant properties can meet the blowing-grade requirements; in addition, the PC/ABS composite material products prepared by the blow molding dies in the embodiments 1 to 4 have smooth surfaces, no wrinkles, good appearance and good processing stability.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The PC/ABS composite material is characterized by comprising PC resin, ABS resin, a compatilizer, a toughening agent, a melt reinforcing agent, an ionic dispersing agent and a halogen-free flame retardant.
2. The PC/ABS composite material according to claim 1, wherein the mass ratio of the PC resin to the ABS resin is (5-6): (14-15).
3. The PC/ABS composite of claim 1 wherein the toughening agent is at least one of a styrene-butadiene thermoplastic elastomer, a methyl methacrylate-butadiene-styrene terpolymer, an ethylene-methyl acrylate-glycidyl methacrylate, an ethylene-vinyl acetate copolymer, and a vulcanizing agent.
4. The PC/ABS composite of claim 1 wherein the melt reinforcement is an acrylate based melt reinforcement, a styrene-acrylonitrile copolymer and a thermoplastic elastomer.
5. The PC/ABS composite material of claim 1, wherein the compatibilizer is at least one of a styrene-maleic anhydride random copolymer and a modified maleic anhydride grafted ABS.
6. The PC/ABS composite material according to claim 1, wherein the halogen-free flame retardant is at least one of a phosphorus flame retardant and an organosilicon flame retardant.
7. The PC/ABS composite of claim 1 wherein the ionic dispersant is at least one of sodium dibutylnaphthalene sulfonate, sodium methyl-aminoethyl oleate, and a formaldehyde condensate of alkyl naphthalene sulfonate.
8. A preparation method of a PC/ABS composite material is used for preparing the PC/ABS composite material as claimed in any one of claims 1-7, and comprises the following steps:
obtaining PC resin and ABS resin;
respectively pretreating the PC resin and the ABS resin to remove water in the PC resin and the ABS resin;
and mixing, melting and extruding the pretreated PC resin, ABS resin, compatilizer, toughening agent, melt reinforcing agent, ionic dispersing agent and halogen-free flame retardant to obtain the PC/ABS composite material.
9. A blow mold for processing an article comprising the PC/ABS composite material according to any one of claims 1 to 7, the blow mold comprising:
fixing a mold;
the movable mold and the fixed mold are combined and connected to form a blowing cavity, and the blowing cavity is used for arranging a parison and is used for preventing the parison from expanding during injection and blowing;
a core for stretching the parison and for injection blowing the parison.
10. A blow molding process for producing an article comprising the PC/ABS composite material according to any one of claims 1 to 7, the blow molding process comprising the steps of:
obtaining a parison;
and performing a blow molding operation on the parison by using a blow mold to obtain the article.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034713A (en) * 1996-07-19 1998-02-10 Shoei Seiki Kogyo Kk Mold release auxiliary equipment for injection molding machine and injection molding machine
CN102516732A (en) * 2011-12-02 2012-06-27 四川长虹电器股份有限公司 Polycarbonate (PC) resin/acrylonitrile-butadiene-styrene (ABS) alloy and preparation method thereof
CN103421268A (en) * 2012-05-15 2013-12-04 中国石油天然气股份有限公司 Easy-to-process type acrylonitrile butadiene styrene (ABS) resin composition and preparation method thereof
CN205871064U (en) * 2016-07-30 2017-01-11 迅兴塑胶模具（深圳）有限公司 Car injection mold with automatic demoulding mechanism
CN108164960A (en) * 2017-12-27 2018-06-15 浙江普利特新材料有限公司 A kind of high heat-resisting, high fondant-strength blowing PC/ABS composite materials and preparation method thereof
CN210061978U (en) * 2019-04-23 2020-02-14 浙江佳友生物科技有限公司 Ejection type plastic cup blow molding mold
CN111073242A (en) * 2019-11-25 2020-04-28 上海锦湖日丽塑料有限公司 High-melt-strength halogen-free flame-retardant blow-molded PC/ABS alloy and preparation method thereof
CN211251298U (en) * 2019-08-20 2020-08-14 泰安锦泰塑料制品有限公司 Plastic bottle blow molding mold
CN111688165A (en) * 2020-06-23 2020-09-22 广州优易机械科技有限公司 Blowing mould
CN214768490U (en) * 2021-05-25 2021-11-19 大冶市安实模具科技有限公司 Shedder is used in precision mold processing that can fast demoulding

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034713A (en) * 1996-07-19 1998-02-10 Shoei Seiki Kogyo Kk Mold release auxiliary equipment for injection molding machine and injection molding machine
CN102516732A (en) * 2011-12-02 2012-06-27 四川长虹电器股份有限公司 Polycarbonate (PC) resin/acrylonitrile-butadiene-styrene (ABS) alloy and preparation method thereof
CN103421268A (en) * 2012-05-15 2013-12-04 中国石油天然气股份有限公司 Easy-to-process type acrylonitrile butadiene styrene (ABS) resin composition and preparation method thereof
CN205871064U (en) * 2016-07-30 2017-01-11 迅兴塑胶模具（深圳）有限公司 Car injection mold with automatic demoulding mechanism
CN108164960A (en) * 2017-12-27 2018-06-15 浙江普利特新材料有限公司 A kind of high heat-resisting, high fondant-strength blowing PC/ABS composite materials and preparation method thereof
CN210061978U (en) * 2019-04-23 2020-02-14 浙江佳友生物科技有限公司 Ejection type plastic cup blow molding mold
CN211251298U (en) * 2019-08-20 2020-08-14 泰安锦泰塑料制品有限公司 Plastic bottle blow molding mold
CN111073242A (en) * 2019-11-25 2020-04-28 上海锦湖日丽塑料有限公司 High-melt-strength halogen-free flame-retardant blow-molded PC/ABS alloy and preparation method thereof
CN111688165A (en) * 2020-06-23 2020-09-22 广州优易机械科技有限公司 Blowing mould
CN214768490U (en) * 2021-05-25 2021-11-19 大冶市安实模具科技有限公司 Shedder is used in precision mold processing that can fast demoulding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王春艳 等编: "《塑料成型工艺与模具设计》", 28 February 2018, 机械工业出版社 *

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