Low-shrinkage high-flowability spraying-free filling reinforcing material and preparation method and application thereof

Abstract

The invention relates to a low-shrinkage high-flow spraying-free filling reinforcing material and a preparation method thereof. The low-shrinkage high-flow spraying-free filling reinforcing material is prepared from the following components in parts by weight: 29-99 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 1-50 parts of spraying-free metal color master batch, 1-5 parts of a high-flow modifier, 5-15 parts of filler and 1 part of an auxiliary agent. According to the low-shrinkage high-flowability spraying-free filling reinforcing material provided by the invention, the metal powder is prefabricated into the master batch, so that the dispersion of the metal powder in the material is improved; due to the introduction of the high-fluidity modifier, the fluidity of the material is greatly improved, the consistency of the metal powder flowing in a melt is facilitated, and the generation of flow marks is reduced; by adding the filler, the strength and dimensional stability of the material can be improved, and under the condition that the length-diameter ratio of the filler is appropriate, metal powder can flow stably, overturn in a complex structure is reduced, and flow marks are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and in particular to a low-shrinkage, high-flow, spray-free filling and reinforcing material and a preparation method thereof. Background Art

[0002] With the rapid development of materials science, polymer materials are increasingly used in many fields, especially in the automotive, electronics, home appliances and other industries, and the performance requirements for materials are becoming more and more stringent. In particular, in terms of dimensional stability, fluidity and appearance quality of materials, traditional material preparation technology can no longer meet the needs of modern industry.

[0003] ABS is one of the five general-purpose plastics. It has good processing performance, electrical properties, chemical resistance, mechanical properties, etc. It is currently commonly used as a base material for spray-free materials. However, existing spray-free materials have problems such as poor fluidity and easy flow marks, as well as insufficient compatibility with metal powders. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a low shrinkage and high flow spray-free filling reinforcement material and a preparation method thereof.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The invention provides a low-shrinkage, high-flow, spray-free filling and reinforcing material, which is prepared from the following components in parts by weight: 29-99 parts of ABS resin, 1-50 parts of spray-free metallic masterbatch, 1-5 parts of high-flow modifier, 5-15 parts of filler and 1 part of auxiliary agent.

[0007] The low-shrinkage, high-flow, spray-free filling reinforcement material provided by the present invention improves the dispersion of metal powder in the material by preforming metal powder into masterbatch; the introduction of a high-flow modifier greatly improves the material fluidity, and is beneficial to the consistency of the metal powder when flowing in the melt, reducing the generation of flow marks; the addition of fillers can improve the strength and dimensional stability of the material, and when the aspect ratio of the filler is appropriate, it can help the metal powder to flow smoothly, reduce the overturning in complex structures, and alleviate the generation of flow marks.

[0008] As a further improvement of the above scheme of the present invention, the spray-free metal masterbatch is prepared from the following components in parts by weight: 44-99 parts of ABS resin, 5-10 parts of PSTG resin, 5-20 parts of PMMA resin, 1-5 parts of compatibilizer, 5-20 parts of spray-free metal powder, and 0.1-1 parts of additives.

[0009] The spray-free metal masterbatch of the present invention uses different resin matrix materials. The addition of PCTG resin and PMMA resin can improve the glossiness of the material, and improve the appearance of the material and the surface scratch resistance.

[0010] As a further improvement of the above scheme of the present invention, the heat deformation temperature of the PCTG resin is 75°C and the molecular weight is 50000-200000; the low molecular weight PCTG resin can significantly improve the glossiness of the material, enhance the appearance of the metal powder material, and does not affect the fluidity of the material;

[0011] And / or, the hardness of the PMMA resin is 1-2H, the fat solubility is 3.5g / 10min, and the molecular weight is 80000-200000; the addition of PMMA resin improves the scratch resistance of the spray-free material, and the glossiness is also improved to a certain extent, and the addition of high fat solubility and low molecular weight PMMA has little effect on the fluidity of the system.

[0012] As a further improvement of the above solution of the present invention, the compatibilizer is styrene maleic anhydride copolymer;

[0013] And / or, the particle size of the spray-free metal powder is 1-100 μm; if the particle size of the metal powder is too high, it is more difficult to disperse, but the texture is stronger; if the particle size is too large, the dispersion is better, the flow mark is weaker, but the texture is worse. The appropriate metal powder particle size can make the material have a good texture, better dispersibility, and better appearance. Therefore, the present invention selects a spray-free metal powder with a particle size of 1-100 μm;

[0014] And / or, the auxiliary agent includes a dispersant, a lubricant and an antioxidant. A good dispersant can make the metal powder disperse better in the masterbatch and avoid the generation of pits. In the present invention, the dispersant is at least one of sodium dodecylbenzene sulfonate, sodium pentadecylbenzene sulfonate, sodium octadecylbenzene sulfonate, silicates, alkali metal phosphates, triethylhexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, polyacrylamide, guar gum, and fatty acid polyethylene glycol esters;

[0015] As a further improvement of the above scheme of the present invention, the preparation method of the spray-free metal masterbatch is: ABS resin, PCTG resin, PMMA resin, and compatibilizer are added to a high-speed mixer in proportion and mixed for 3-5 minutes, and then the spray-free metal powder and additives are added to the high-speed mixer in proportion and mixed and dispersed for 10-15 minutes, and then added to a twin-screw extruder for extrusion to obtain the spray-free metal masterbatch.

[0016] As a further improvement of the above scheme of the present invention, the high flow modifier is at least one of ethylene methyl acrylate copolymer, maleic anhydride grafted acrylonitrile-styrene copolymer, maleimide grafted acrylonitrile-styrene copolymer, and acetosyringone-acrylonitrile-styrene copolymer. Preferably, the high flow modifier is ethylene methyl acrylate copolymer. The use of a low molecular weight modifier greatly improves the fluidity of the material without affecting the physical properties of the material, and is beneficial to the consistency of the metal powder when flowing in the melt, reducing the generation of flow marks.

[0017] As a further improvement of the above scheme of the present invention, the filler is at least one of talcum powder, barium sulfate, calcium carbonate, and a mixture of magnesium hydroxide and magnesium sulfate. Preferably, the aspect ratio of the filler is 1-3:1; fillers with a higher aspect ratio can improve the dimensional stability and strength of the material, but too high an aspect ratio will also affect the texture of the spray-free material and the dispersion of the metal powder; and fillers with a small aspect ratio have little effect on the dispersion of the metal powder; a lower aspect ratio makes the flow of the metal powder more stable to a certain extent, reduces the flipping in the complex structure, and can also improve the strength and dimensional stability of the material.

[0018] As a further improvement of the above solution of the present invention, the auxiliary agent includes an antioxidant and a lubricant.

[0019] The present invention proposes a method for preparing the low shrinkage and high flow spray-free filling and reinforcing material as described above, which comprises the following steps: adding ABS resin, spray-free metallic masterbatch, high flow modifier, filler and auxiliary agent in proportion to a twin-screw extruder for extrusion to obtain the low shrinkage and high flow spray-free filling and reinforcing material.

[0020] The present invention proposes an application of the aforementioned low shrinkage and high flow spray-free filling reinforcement material in automobile, electronic and household appliance materials.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The low-shrinkage, high-flow, spray-free filling reinforcement material provided by the present invention improves the dispersion of metal powder in the material by preforming metal powder into masterbatch; the introduction of a high-flow modifier greatly improves the material fluidity, and is beneficial to the consistency of the metal powder when flowing in the melt, reducing the generation of flow marks; the addition of fillers can improve the strength and dimensional stability of the material, and when the aspect ratio of the filler is appropriate, it can help the metal powder to flow smoothly, reduce the overturning in complex structures, and alleviate the generation of flow marks. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below in conjunction with specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] The raw material information used in the following examples and comparative examples is as follows:

[0026] ABS resin 1#: LG ABS HP181, melt flow rate at 220°C and 10kg load is 42g / 10min;

[0027] ABS resin 2#: Chimei ABS 757K, melt flow rate at 220°C and 10kg load is 18g / 10min;

[0028] PCTG resin 1#: SK PCTG JN200, heat distortion temperature 74°C;

[0029] PCTG resin 2#: Eastman PCTG MX731, heat distortion temperature 94°C;

[0030] PMMA resin 1#: Asahi Kasei PMMA80NH, melt flow rate at 300°C and 3.8kg load is 5.5g / 10min;

[0031] PMMA resin 2#: Rohm PMMA df20 8N, melt flow rate at 300°C and 3.8kg load is 2.5g / 10min;

[0032] Compatibilizer: INEOS Styrolution SMA 127, heat deformation temperature 120°C (0.45MPa), Lianlong Basel SMA263, heat deformation temperature 126°C (0.45MPa);

[0033] Spray-free metal powder 1#: aluminum powder, LX-1820 Xuyang, particle size 5-10μm;

[0034] Spray-free metal powder 2#: aluminum powder, M-1020 Clariant, particle size 10-30μm;

[0035] Spray-free metal powder 3#: aluminum powder, RK72008 BASF, particle size 10-50μm;

[0036] Spray-free metal powder 4#: aluminum powder, M005 Cabot aluminum silver sand, particle size 20-100μm;

[0037] Spray-free metal powder 5#: aluminum powder, LX-5630 Xuyang, particle size 50-200μm;

[0038] Dispersant 1#: sodium dodecyl sulfate;

[0039] Dispersant 2#: sodium octadecylbenzenesulfonate;

[0040] High flow modifier: ethylene methyl acrylate copolymer, molecular weight 196.3;

[0041] Filler 1#: barium sulfate, 3000 mesh;

[0042] Filler 2#: magnesium hydroxide-magnesium sulfate mixture, 5000 mesh, aspect ratio 3:1;

[0043] Additives: Antioxidant A, antioxidant B, and lubricant are compounded in a mass ratio of 1:2:7; Antioxidant A: Albemarle AT-76; Antioxidant B: Albemarle AT-168; Lubricant: EBS P130, Indonesia PT CMS.

[0044] The above raw materials can all be obtained commercially. The above raw materials are only for illustrating the sources and components of the reagents used in the experiments of the present invention so as to fully disclose the information. It does not mean that the present invention cannot be achieved by using other similar reagents or reagents provided by other suppliers.

[0045] Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the present technical field.

[0046] Example 1

[0047] This embodiment proposes a low shrinkage and high flow spray-free filling reinforcement material, which comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:71:3:5:1. Among them, the spray-free metal masterbatch comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1#, and additives is 76:5:5:3:10:1.

[0048] The steps of the preparation method of the low shrinkage and high flow spray-free filling reinforcement material of this embodiment are as follows:

[0049] (1) Preparing a spray-free metal masterbatch: adding ABS resin 1#, PCTG resin 1#, PMMA resin 1#, and a compatibilizer in proportion to a high-speed mixer and mixing for 3-5 minutes, then adding a spray-free metal powder 1# and an additive in proportion to a high-speed mixer and mixing and dispersing for 10 minutes, and then adding the mixture to a twin-screw extruder for extrusion to obtain a spray-free metal masterbatch;

[0050] (2) The spray-free metallic masterbatch prepared in step (1) is mixed with ABS resin 1#, high flow modifier, filler 1#, and additives in proportion for 6 minutes, and then added to a twin-screw extruder for extrusion to obtain a low-shrinkage, high-flow spray-free filling reinforcement material.

[0051] Example 2

[0052] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0053] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 2#, high flow modifier, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 2#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0054] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 2#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 2#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:5:3:10:1.

[0055] Example 3

[0056] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0057] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0058] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 2#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 2#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:5:3:10:1.

[0059] Example 4

[0060] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0061] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0062] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 2#, compatibilizer, spray-free metal powder 2# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 2#, compatibilizer, spray-free metal powder 2# and additives is 76:5:5:3:10:1.

[0063] Example 5

[0064] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0065] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 2#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 2#, and additives is 20:66:3:10:1;

[0066] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 3# and additives; in parts by weight, the ratio of ABS resin 2#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 3# and additives is 76:5:5:3:10:1.

[0067] Example 6

[0068] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0069] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0070] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 4# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 4# and additives is 66:10:5:3:10:1.

[0071] Example 7

[0072] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0073] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0074] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 5# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 5# and additives is 66:5:10:3:10:1.

[0075] Example 8

[0076] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0077] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0078] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 74:5:5:5:10:1.

[0079] Example 9

[0080] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0081] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0082] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 61:5:5:3:25:1.

[0083] Example 10

[0084] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0085] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 2#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:61:5:10:1;

[0086] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 78:5:5:3:10:1.

[0087] Embodiment 11

[0088] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0089] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:66:3:10:1;

[0090] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 78:5:5:3:10:1.

[0091] Example 12

[0092] This embodiment adopts the same implementation as that of Embodiment 1, and the difference from Embodiment 1 is that:

[0093] The low shrinkage and high flow spray-free filling reinforcement material of this embodiment comprises the following components: spray-free metal masterbatch, ABS resin 2#, high flow modifier, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:61:3:15:1;

[0094] The spray-free metal masterbatch of this embodiment comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:5:3:10:1.

[0095] Comparative Example 1

[0096] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0097] The spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:61:3:15:1;

[0098] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 81:5:3:10:1.

[0099] Comparative Example 2

[0100] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0101] The spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:71:3:5:1;

[0102] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PCTG resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, compatibilizer, spray-free metal powder 1# and additives is 81:5:3:10:1.

[0103] Comparative Example 3

[0104] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0105] The spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:71:3:5:1;

[0106] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 36:5:3:50:1.

[0107] Comparative Example 4

[0108] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0109] The low shrinkage and high flow spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, filler 1#, and additives; by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, filler 1#, and additives is 20:74:5:1;

[0110] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:5:3:10:1.

[0111] Comparative Example 5

[0112] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0113] The spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:45:3:30:1;

[0114] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:3:10:1.

[0115] Comparative Example 6

[0116] This comparative example provides a spray-free filling reinforcement material. This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that:

[0117] The spray-free filling reinforcement material of this comparative example comprises the following components: spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; in parts by weight, the ratio of the spray-free metal masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 50:41:3:5:1;

[0118] The spray-free metal masterbatch of this comparative example comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives; in parts by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, spray-free metal powder 1# and additives is 76:5:5:3:10:1.

[0119] Test Case

[0120] The spray-free filling reinforcement materials prepared in Examples 1-12 and Comparative Examples 1-6 were subjected to the following performance tests:

[0121] Gloss test: According to ISO-2813 test, use a gloss tester to test the color plate plane and read the data at 60°;

[0122] Flow mark evaluation: Use complex molds to evaluate the flow marks on the surface of the color plate;

[0123] Pitting test: internal evaluation method, mainly visual inspection;

[0124] Surface scratch resistance test: evaluated using ISO 1518;

[0125] Shrinkage test: GB / T 13951;

[0126] The above test results are shown in Table 1.

[0127] Table 1 Performance test results

[0128]

[0129]

[0130] From the results in Table 1, we can see that:

[0131] Compared with Comparative Example 1, Comparative Example 3, and Comparative Examples 5-6, the glossiness of the materials prepared in Examples 1-12 is significantly improved;

[0132] It can be seen from the shrinkage test results of Examples 1-12 that the material prepared by the present invention can achieve a reduced dimensional shrinkage;

[0133] Compared with Comparative Example 1, Comparative Example 3, and Comparative Examples 5-6, the flow marks of the materials prepared in Examples 1-12 of the present invention are significantly improved, and the metal powder is well dispersed and has a good appearance;

[0134] Compared with Examples 1-12, since no PMMA resin was added in the preparation of the spray-free metal masterbatch in Comparative Example 2, the scratch resistance was 2B, while the scratch resistance of the materials of Examples 1-12 was 1B or even HB, indicating that the hardness of the material prepared by the present invention is also improved to a certain extent;

[0135] In summary, the low-shrinkage, high-flow, spray-free filling and reinforcement material prepared by the present invention has the advantages of high gloss, low flow marks, good appearance and low shrinkage, and compared with conventional materials, the scratch resistance is improved to a certain extent.

[0136] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0137] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A low shrinkage, high flow, spray-free filling and reinforcement material, characterized in that: The invention is prepared from the following components in parts by weight: 29-99 parts of ABS resin, 1-50 parts of spray-free metal masterbatch, 1-5 parts of high flow modifier, 5-15 parts of filler and 1 part of auxiliary agent.

2. The low shrinkage and high flow spray-free filling reinforcement material according to claim 1, characterized in that: The spray-free metal masterbatch is prepared from the following components in parts by weight: 44-99 parts of ABS resin, 5-10 parts of PSTG resin, 5-20 parts of PMMA resin, 1-5 parts of compatibilizer, 5-20 parts of spray-free metal powder, and 0.1-1 parts of auxiliary agent.

3. The low shrinkage and high flow spray-free filling reinforcement material according to claim 2, characterized in that: The PCTG resin has a heat distortion temperature of 75°C and a molecular weight of 50,000-200,000; And / or, the PMMA resin has a hardness of 1-2H, a fat solubility of 3.5 g / 10 min, and a molecular weight of 80,000-200,000.

4. The low shrinkage and high flow spray-free filling reinforcement material according to claim 2, characterized in that: The compatibilizer is styrene maleic anhydride copolymer; And / or, the particle size of the spray-free metal powder is 1-100 μm; And / or, the auxiliary agent includes a dispersant, a lubricant and an antioxidant.

5. The low shrinkage and high flow spray-free filling reinforcement material according to claim 2, characterized in that: The preparation method of the spray-free metal masterbatch is as follows: ABS resin, PCTG resin, PMMA resin and compatibilizer are added to a high-speed mixer in proportion and mixed for 3-5 minutes; then, the spray-free metal powder and the auxiliary agent are added to the high-speed mixer in proportion and mixed and dispersed for 10-15 minutes; and then, the mixture is added to a twin-screw extruder and extruded to obtain the spray-free metal masterbatch.

6. The low shrinkage and high flow spray-free filling reinforcement material according to claim 1, characterized in that: The high flow modifier is at least one of ethylene methyl acrylate copolymer, maleic anhydride grafted acrylonitrile-styrene copolymer, maleimide grafted acrylonitrile-styrene copolymer, and acetosyringone-acrylonitrile-styrene copolymer.

7. The low shrinkage and high flow spray-free filling reinforcement material according to claim 1, characterized in that: The filler is at least one of talc, barium sulfate, calcium carbonate, and a mixture of magnesium hydroxide and magnesium sulfate; And / or, the aspect ratio of the filler is 1-3:

1.

8. The low shrinkage and high flow spray-free filling reinforcement material according to claim 1, characterized in that: The auxiliary agents include antioxidants and lubricants.

9. A method for preparing a low shrinkage, high flow, spray-free filling and reinforcing material as claimed in any one of claims 1 to 8, characterized in that: It includes the following steps: ABS resin, spray-free metal masterbatch, high flow modifier, filler and additive are added into a twin-screw extruder in proportion and extruded to obtain a low shrinkage and high flow spray-free filling reinforcement material.

10. Use of the low shrinkage, high flow, spray-free filling and reinforcement material according to any one of claims 1 to 8 in automobile, electronic and household appliance materials.

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