CN115746493A - Foaming reinforced ABS composite material and preparation method thereof - Google Patents
Foaming reinforced ABS composite material and preparation method thereof Download PDFInfo
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- CN115746493A CN115746493A CN202211282148.XA CN202211282148A CN115746493A CN 115746493 A CN115746493 A CN 115746493A CN 202211282148 A CN202211282148 A CN 202211282148A CN 115746493 A CN115746493 A CN 115746493A
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- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000005187 foaming Methods 0.000 title claims abstract description 13
- -1 polypropylene Polymers 0.000 claims abstract description 70
- 239000004743 Polypropylene Substances 0.000 claims abstract description 63
- 239000000835 fiber Substances 0.000 claims abstract description 63
- 229920001155 polypropylene Polymers 0.000 claims abstract description 63
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 17
- 239000000661 sodium alginate Substances 0.000 claims abstract description 17
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 14
- 238000001746 injection moulding Methods 0.000 claims description 14
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- 239000007864 aqueous solution Substances 0.000 claims description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims description 13
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- 239000006260 foam Substances 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 11
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- GFLJTEHFZZNCTR-UHFFFAOYSA-N 3-prop-2-enoyloxypropyl prop-2-enoate Chemical compound C=CC(=O)OCCCOC(=O)C=C GFLJTEHFZZNCTR-UHFFFAOYSA-N 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 claims description 3
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- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 claims description 2
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 2
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- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 46
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 46
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- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 3
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- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 description 1
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- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 1
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to a foaming reinforced ABS composite material and a preparation method thereof, belonging to the technical field of high polymer materials. The reinforced ABS composite material comprises the following raw materials in parts by weight: 72-103 parts of ABS, 4-15 parts of phase solvent, 2-9 parts of foaming agent, 0.2-1.5 parts of antioxidant, 0.3-1.5 parts of lubricant and 8-40 parts of shrink-proof agent. The shrinkproof agent is formed by adopting a static self-assembly technology, the polypropylene fiber loaded with sodium alginate modified silicon dioxide nano particles utilizes the characteristics of light weight, shrinkage resistance and cracking resistance of the polypropylene fiber to achieve the purpose of solving the problem that a thick workpiece prepared from the reinforced ABS composite material has shrinkage marks, and meanwhile, the introduced sodium alginate modified silicon dioxide nano particles can increase the roughness of the surface of the polypropylene fiber to achieve the purpose of solving the problem that the shrinkage resistance of the ABS composite material is not obvious due to the smooth surface of the polypropylene fiber.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a foaming reinforced ABS composite material and a preparation method thereof.
Background
An acrylonitrile-butadiene-styrene copolymer (ABS resin for short) is one of five synthetic resins, and has excellent impact resistance, heat resistance and low temperature resistance; has the advantages of easy processing, stable product size, good surface gloss and the like; meanwhile, the coating and coloring are easy, the coating can be used for secondary processing such as surface metal spraying, electroplating, welding, hot pressing, bonding and the like, and the coating is widely applied to the industrial fields such as machinery, automobiles, electronic appliances, instruments, textile, buildings and the like and is a thermoplastic engineering plastic with wide application. Meanwhile, in order to achieve the purpose of replacing steel with plastic, the injection molding part of the reinforced ABS composite material is often thicker, so that the generation probability of sink marks in the injection molding process is greatly increased, and in addition, the injection molding part is heavier in weight, and the utilization range of the reinforced ABS composite material is limited.
Therefore, in order to solve the preparation field of reinforced ABS composite materials, it is necessary to research reinforced ABS composite materials with less sink marks and light weight during injection molding, and to meet the development requirements of reinforced ABS composite materials.
Disclosure of Invention
The invention aims to provide a foaming reinforced ABS composite material and a preparation method thereof, which aim to solve the problem that a thick part prepared from the reinforced ABS composite material has sink marks, and the obtained foaming reinforced ABS composite material has the advantages of light weight and high strength.
The purpose of the invention can be realized by the following technical scheme:
a foaming reinforced ABS composite material comprises the following raw materials in parts by weight: 72-103 parts of ABS, 4-15 parts of phase solvent, 2-9 parts of foaming agent, 0.2-1.5 parts of antioxidant, 0.3-1.5 parts of lubricant and 8-40 parts of shrink-proof agent.
Further, the ABS is prepared by a continuous bulk method, and the weight average molecular weight is 2-4 ten thousand.
Further, the phase solvent is polypropylene-maleic anhydride copolymer.
Further, the foaming agent is a mixture of several of azodicarbonammonium carbonate, toluene sulfophthalein amino rise and 5-phenyltetrazole in any ratio.
Further, the antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 2-3.
Further, the lubricant is a mixture of pentaerythritol stearate, N-hexamethylene bis-stearamide, glycerol monostearate, butyl stearate and ethylene bis-stearamide in any ratio.
Further, the shrink-proof agent is prepared by the following steps:
and (2) immersing the treated polypropylene fiber into the treatment solution for 20-30min, stirring at room temperature for 15-20min, then performing suction filtration, and washing the obtained solid with water for several times to obtain the modified polypropylene fiber, wherein the mass ratio of the surface-treated polypropylene fiber to the treatment solution is (1).
Further, the treated polypropylene fiber is a polypropylene fiber which is impregnated by 1MPDDA aqueous solution and is subjected to stirring treatment, and a PDDA film layer is adsorbed and wrapped on the surface of the polypropylene fiber impregnated in the polypropylene fiber by utilizing the excellent adhesive force and flexibility of PDDA, so that the roughness of the polypropylene fiber is increased, and the surface of the polypropylene fiber is positively charged.
Further, the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1.
In the preparation process of the shrink-proof agent, the treatment fluid is sodium alginate modified nano-silica treatment fluid, the solution is prepared by taking organic silicon (silicon source), sodium alginate and a catalyst (alkali or acid) as raw materials, taking deionized water and an alcohol organic solvent as a mixed solvent and adopting an in-situ modification technology well known in the technical field. In the preparation process of the shrink-proof agent, positive electricity on the surface of the treated polypropylene fiber is utilized, and the polypropylene fiber and carboxyl ions on the surface of sodium alginate modified nano silicon dioxide have electrostatic adsorption effect, so that silicon dioxide particles are assembled on the surface of the polypropylene fiber, on one hand, the polypropylene fiber has an anchoring effect on the silicon dioxide nanoparticles, the agglomeration and migration of the silicon dioxide nanoparticles in an organic base material are reduced, the dispersion of the nano silicon dioxide in the organic base material is improved, on the other hand, the anchoring nano silicon dioxide particles increase the roughness of the surface of the polypropylene fiber, the effect between the polypropylene fiber and an ABS base material is increased, the volatilization of the shrinkage-proof and crack-proof effects of the polypropylene fiber is promoted, the problem that the thick part prepared from the reinforced ABS composite material has shrinkage marks is solved, and meanwhile, the introduction of the polypropylene fiber and the silicon dioxide can play the role of reinforcing the strength of the polypropylene fiber and the silicon dioxide particles, so that the obtained foamed reinforced ABS composite material has the advantages of light weight and high strength.
Further, the treatment fluid is prepared by the following steps:
slowly dropping the solution a into the solution b under stirring, mechanically stirring for 2-3h after complete dropping, stopping stirring, adding a mixture of deionized water and absolute ethyl alcohol (the mass ratio of the deionized water to the absolute ethyl alcohol is 1).
Further, the mass ratio of the solution a to the solution b is 2-2.6.
Further, the organic silicon is one of methyl orthosilicate, ethyl orthosilicate and butyl orthosilicate.
In the further scheme, an olefin silane coupling agent raw material is added in the in-situ modification technology, so that a silicone chain and double bonds are introduced to the surface of sodium alginate modified nano silicon dioxide, on one hand, the roughness of the surface of polypropylene fiber is increased, the silicone chain is easy to extend into a molecular chain of a phase solvent due to the low surface energy characteristic of the silicone chain, the interaction between the polypropylene fiber and the phase solvent and the ABS molecular chain is further improved, and the anti-shrinkage and anti-cracking effects of the polypropylene fiber are improved; on the other hand, the introduction of sodium alginate has high water absorption rate, which can lead to high water absorption rate of the ABS composite material, lead to increased water vapor absorption amount of the ABS composite material, increase water content in a system, lead to generation of spray marks on the surface of a product and surface silver wires during injection molding, although the water content of the obtained ABS composite material can be reduced through drying operation, not only increase production cost and complicate the injection molding process of the ABS composite material, therefore, a siloxane chain is introduced, a layer of hydrophobic layer is formed on the surface of sodium alginate modified nano-silica by utilizing the characteristic of low surface energy of the siloxane chain, contact between sodium alginate and water is avoided, and further the adverse effect caused by the introduction of sodium alginate is avoided, so that the introduced sodium alginate modified nano-silica fully exerts the roughness of the surface of polypropylene fiber, the positive mechanism of interaction between polypropylene fiber, a phase dissolving agent and ABS molecular chains is improved, and the adverse effect is overcome.
Preferably, the olefin silane coupling agent is a silane coupling agent KH570.
A preparation method of the foaming reinforced ABS composite material comprises the following steps:
step one, uniformly mixing one half mass of ABS, a phase solvent, an antioxidant and a shrink-proof agent, then adding the rest mass of ABS and a lubricant, and continuously uniformly mixing to obtain a mixture;
step two, transferring the mixture to a double-screw extruder, and performing melt extrusion, cooling and grain cutting to obtain granules, wherein the extrusion temperature is 200-225 ℃;
and step three, uniformly mixing the obtained granules with a foaming agent, and carrying out microcellular injection foaming molding through an injection molding machine, wherein the injection molding temperature is 180-235 ℃.
The invention has the beneficial effects that:
the polypropylene fiber loaded with sodium alginate modified silicon dioxide nanoparticles is formed by adopting an electrostatic self-assembly technology as a shrink-proof agent, the polypropylene fiber is light in weight, shrink-proof and crack-proof, and meanwhile, the roughness of the surface of the polypropylene fiber can be increased by introducing the loaded silicon dioxide nanoparticles, so that the aim that the shrinkage-proof effect of the polypropylene fiber on an ABS composite material is not obvious due to the smooth surface of the polypropylene fiber is fulfilled;
according to the electrostatic self-assembly technology, the electrostatic adsorption effect between positive electricity on the surface of treated polypropylene fiber and carboxyl ions introduced by sodium alginate is utilized, and sodium alginate belongs to a substance with high water absorption rate, so that the water absorption rate of the ABS composite material is high due to the introduction of the sodium alginate, and the adverse effect of spray marks and surface silver wires is easily generated on the surface of a product during injection molding.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparation of a treatment liquid:
slowly dripping 100g of the solution a into 50g of the solution b under stirring, mechanically stirring for 2h after complete dripping, stopping stirring, adding a mixture of deionized water and absolute ethyl alcohol (the mass ratio of the deionized water to the absolute ethyl alcohol is 1) until the mass fraction of silicon dioxide is 6%, so as to obtain a treatment solution, wherein the solution a is formed by mixing the following components in a mass ratio of 10.
Example 2
Preparation of a treatment solution:
slowly dropping 130g of the solution a into 50g of the solution b under stirring, mechanically stirring for 3h after complete dropping, stopping stirring, adding a mixture of deionized water and absolute ethyl alcohol (the mass ratio of the deionized water to the absolute ethyl alcohol is 1).
Example 3
Preparation of a treatment solution:
slowly dropping 100g of the solution a into 50g of the solution b under stirring, mechanically stirring for 2h after complete dropping, stopping stirring, adding a mixture of deionized water and absolute ethyl alcohol (the mass ratio of the deionized water to the absolute ethyl alcohol is 1).
Example 4
Preparation of treatment liquid
Slowly dropping 130g of the solution a into 50g of the solution b under stirring, mechanically stirring for 3h after complete dropping, stopping stirring, adding a mixture of deionized water and absolute ethyl alcohol (the mass ratio of the deionized water to the absolute ethyl alcohol is 1).
Example 5
Preparation of shrink-proof agent:
impregnating the 1MPDDA aqueous solution and stirring the treated polypropylene fiber, wherein the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1; and then, soaking the treated polypropylene fiber into the treatment solution prepared in the example 1 for 20min, stirring at room temperature for 20min, then carrying out suction filtration, and washing the obtained solid with water for several times to obtain the modified polypropylene fiber, wherein the mass ratio of the surface-treated polypropylene fiber to the treatment solution is 1.
Example 6
Preparation of shrink-proof agent:
impregnating the 1MPDDA aqueous solution and stirring the treated polypropylene fiber, wherein the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1; and then, soaking the treated polypropylene fiber into the treatment solution prepared in the embodiment 2 for 30min, stirring at room temperature for 15min, then performing suction filtration, and washing the obtained solid with water for several times to obtain the modified polypropylene fiber, wherein the mass ratio of the surface-treated polypropylene fiber to the treatment solution is 1.
Example 7
Preparation of shrink-proof agent:
impregnating the 1MPDDA aqueous solution and stirring the treated polypropylene fiber, wherein the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1; and then, soaking the treated polypropylene fiber into the treatment solution prepared in the example 3 for 20min, stirring at room temperature for 20min, then carrying out suction filtration, and washing the obtained solid with water for several times to obtain the modified polypropylene fiber, wherein the mass ratio of the surface-treated polypropylene fiber to the treatment solution is 1.
Example 8
Preparation of shrink-proof agent:
impregnating the 1MPDDA aqueous solution and stirring the treated polypropylene fiber, wherein the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1; and then, soaking the treated polypropylene fiber into the treatment solution prepared in the embodiment 4 for 30min, stirring at room temperature for 15min, then carrying out suction filtration, and washing the obtained solid with water for several times to obtain the modified polypropylene fiber, wherein the mass ratio of the surface-treated polypropylene fiber to the treatment solution is 1.
Example 9
Preparation of a foam reinforced ABS composite material:
the preparation method comprises the following steps of: 72 parts of ABS, 4 parts of a phase solvent, 2 parts of a foaming agent, 0.2 part of an antioxidant, 0.3 part of a lubricant and 8 parts of a shrink prevention agent prepared in example 5, wherein the ABS is prepared by a continuous bulk method, the weight average molecular weight of the ABS is 2-4 ten thousand, the phase solvent is a polypropylene-maleic anhydride copolymer, the foaming agent is azodicarbonammonium carbonate, the antioxidant is prepared by mixing an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 2;
step two, uniformly mixing one half mass of ABS, the phase solvent, the antioxidant and the anti-shrinking agent, then adding the rest mass of ABS and the lubricant, and continuously uniformly mixing to obtain a mixture;
step three, transferring the mixture to a double-screw extruder, and performing melt extrusion, cooling and grain cutting to obtain granules, wherein the extrusion temperature is 200-225 ℃;
and step four, uniformly mixing the obtained granules with a foaming agent, and carrying out microcellular injection foaming molding through an injection molding machine, wherein the injection molding temperature is 180-235 ℃.
Example 10
Preparation of a foam reinforced ABS composite material:
the preparation method comprises the following steps of: 103 parts of ABS, 15 parts of a phase solvent, 9 parts of a foaming agent, 1.5 parts of an antioxidant, 1.5 parts of a lubricant and 40 parts of a shrink prevention agent prepared in example 6, wherein the ABS is prepared by a continuous bulk method, the weight average molecular weight of the ABS is 2-4 ten thousand, the phase solvent is a polypropylene-maleic anhydride copolymer, the foaming agent is toluene sulfophthalein aminogroup-growing and 5-phenyltetrazole, the antioxidant is prepared by mixing an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 3;
step two, uniformly mixing one half mass of ABS, the phase solvent, the antioxidant and the anti-shrinking agent, then adding the rest mass of ABS and the lubricant, and continuously uniformly mixing to obtain a mixture;
step three, transferring the mixture to a double-screw extruder, and performing melt extrusion, cooling and grain cutting to obtain granules, wherein the extrusion temperature is 200-225 ℃;
and step four, uniformly mixing the obtained granules with a foaming agent, and carrying out microcellular injection foaming molding through an injection molding machine, wherein the injection molding temperature is 180-235 ℃.
Example 11
Preparation of a foam reinforced ABS composite material: the same shrink proofing agent as prepared in example 7 was substituted for the same shrink proofing agent as in example 9, and the rest was the same.
Example 12
Preparation of a foam reinforced ABS composite material: the same shrink proofing agent as prepared in example 8 was substituted for an equal portion of shrink proofing agent as compared to example 9, and the rest was the same.
Comparative example 1
Preparation of a foam reinforced ABS composite material: the shrink-proofing agent was replaced with an equal part of polypropylene fiber as compared with example 9, and the rest was the same.
Comparative example 2
Preparation of a foam reinforced ABS composite material: the pellets obtained in the third step were allowed to stand for 1 day, and then the operation of the fourth step was carried out, as compared with example 9.
Comparative example 3
Preparation of a foam reinforced ABS composite material: compared with the example 9, the pellet obtained in the third step is placed for 1 day, then is dried, the moisture content of the pellet is controlled to be lower than 0.1%, and then the operation of the fourth step is carried out.
Comparative example 4
The pellets obtained in the third step were left to stand for 1 day, and then subjected to the operation of the fourth step, as compared with example 11.
The foam reinforced ABS composites obtained in examples 9 to 12 and comparative examples 1 to 4 were subjected to performance tests according to the relevant standards, and the test results are shown in Table 1.
In Table 1, it can be seen from the comparison of the data of comparative example 1 and examples 9-12 that the shrinkproof effect produced by the shrinkproof agents prepared in examples 5-8 is better than that produced by the pure polypropylene fiber, and from the comparison of the data of example 9 and comparative examples 2-3, the shrinkproof agents prepared in examples 5-6 absorb moisture in the air easily after the pellets are left for 1 day, which is not good for processing, and from the comparison of the data of examples 9-10 and examples 11-12, the shrinkproof agents prepared in examples 7-8 have no such effect, and the shrinkproof agents prepared in examples 7-8 have better effect than that prepared in examples 5-6, as shown by the data of comparative example 4.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the appended claims.
Claims (10)
1. A foaming reinforced ABS composite material is characterized in that: the feed comprises the following raw materials in parts by weight: 72-103 parts of ABS, 4-15 parts of phase solvent, 2-9 parts of foaming agent, 0.2-1.5 parts of antioxidant, 0.3-1.5 parts of lubricant and 8-40 parts of shrink-proof agent;
the shrink-proof agent is prepared by the following steps:
immersing the treated polypropylene fiber into the treatment solution for 20-30min, stirring at room temperature for 15-20min, performing suction filtration and washing to obtain a modified polypropylene fiber, wherein the treated polypropylene fiber is obtained by performing immersion treatment on a PDDA aqueous solution; the treatment fluid is sodium alginate modified nano silicon dioxide treatment fluid.
2. The foam-reinforced ABS composite material according to claim 1, wherein: the mass ratio of the surface-treated polypropylene fiber to the treating fluid is 1.
3. The foam reinforced ABS composite material according to claim 1, wherein: the treated polypropylene fiber is a polypropylene fiber impregnated with 1MPDDA aqueous solution and treated by stirring.
4. The foam-reinforced ABS composite material according to claim 3, characterized in that: the mass ratio of the polypropylene fiber to the 1MPDDA aqueous solution is 1.
5. The foam-reinforced ABS composite material according to claim 1, wherein: the treatment fluid is prepared by the following steps:
slowly dripping the solution a into the solution b under stirring, stirring for 2-3h after complete dripping, stopping stirring, and supplementing a mixture of deionized water and absolute ethyl alcohol until the mass fraction of silicon dioxide is 6-8% to obtain a treatment solution, wherein the solution a is formed by mixing an organic silicon, the absolute ethyl alcohol and sodium alginate according to a mass ratio of 10-12.
6. The foam reinforced ABS composite material according to claim 5, wherein: the mass ratio of the solution a to the solution b is 2-2.6.
7. The foam-reinforced ABS composite material according to claim 5, wherein: the organic silicon is one of methyl orthosilicate, ethyl orthosilicate and butyl orthosilicate.
8. The foam-reinforced ABS composite material according to claim 5, wherein: the olefin silane coupling agent is a silane coupling agent KH570.
9. The preparation method of the foam reinforced ABS composite material as claimed in claim 1, wherein the preparation method comprises the following steps: the method comprises the following steps:
step one, uniformly mixing one half mass of ABS, a phase solvent, an antioxidant and a shrinkage prevention agent, then adding the rest mass of ABS and a lubricant, and continuously uniformly mixing to obtain a mixture;
transferring the mixture to a double-screw extruder, and performing melt extrusion, cooling and grain cutting to obtain granules;
and step three, uniformly mixing the obtained granules with a foaming agent, and carrying out microcellular injection foaming molding.
10. The preparation method of the foam reinforced ABS composite material as claimed in claim 9, wherein the preparation method comprises the following steps: the extrusion temperature is 200-225 ℃, and the injection molding temperature is 180-235 ℃.
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