Low-shrinkage high-flow spray-free filling reinforcing material and preparation method and application thereof

Abstract

This invention relates to a low-shrinkage, high-flow, spray-free filler-reinforced material and its preparation method. The low-shrinkage, high-flow, spray-free filler-reinforced material is prepared from the following components in parts by weight: 29-99 parts ABS resin, 1-50 parts spray-free metallic masterbatch, 1-5 parts high-flow modifier, 5-15 parts filler, and 1 part additive. The low-shrinkage, high-flow, spray-free filler-reinforced material provided by this invention improves the dispersion of metal powder in the material by pre-forming the metal powder into masterbatch; the introduction of the high-flow modifier greatly improves the material's fluidity and facilitates the uniformity of metal powder flow in the melt, reducing flow marks; the addition of filler improves the material's strength and dimensional stability, and when the filler's aspect ratio is appropriate, it helps the metal powder flow smoothly, reducing tumbling in complex structures and mitigating flow marks.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, and in particular to a low-shrinkage, high-flow, spray-free filler-reinforced material and its preparation method. Background Technology

[0002] With the rapid development of materials science, polymer materials are increasingly widely used in many fields, especially in the automotive, electronics, and home appliance industries, where the performance requirements for materials are becoming increasingly stringent. In particular, traditional materials preparation techniques are no longer sufficient to meet the demands of modern industry in terms of dimensional stability, flowability, and appearance quality.

[0003] ABS is one of the five major general-purpose plastics. It has good processing properties, electrical properties, chemical resistance, and mechanical properties, and is currently commonly used as a base material for paint-free materials. However, existing paint-free materials have problems such as poor flowability leading to flow marks, and insufficient compatibility with metal powders. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a low-shrinkage, high-flow, spray-free filler-reinforced material and its preparation method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

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

[0007] The low-shrinkage, high-flow, spray-free filler-reinforced material provided by this invention improves the dispersion of metal powder in the material by pre-forming metal powder into masterbatch; the introduction of a high-flow modifier greatly improves the material's fluidity and facilitates the uniformity of metal powder flow in the melt, reducing the generation of flow marks; the addition of filler can improve the material's strength and dimensional stability, and when the filler's aspect ratio is appropriate, it can help the metal powder flow smoothly, reduce tumbling in complex structures, and mitigate the generation of flow marks.

[0008] As a further improvement of the above-mentioned solution of the present invention, the paint-free metallic 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 paint-free metallic powder, and 0.1-1 parts of additives.

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

[0010] As a further improvement to the above-mentioned solution of the present invention, the heat distortion temperature of the PCTG resin is 75°C and the molecular weight is 50,000-200,000; the low molecular weight PCTG resin can significantly improve the gloss of the material, enhance the appearance of the metal powder material, and does not affect the flowability of the material.

[0011] And / or, the PMMA resin has a hardness of 1-2H, a solubility of 3.5g / 10min, and a molecular weight of 80,000-200,000; the addition of PMMA resin improves the scratch resistance of the paint-free material and also enhances its gloss to a certain extent, and the addition of high-soil-soluble, low-molecular-weight PMMA has little effect on the flowability of the system.

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

[0013] And / or, the particle size of the spray-free metal powder is 1-100μm; 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 and the flow marks are weaker, but the texture is worse. The appropriate particle size of the metal powder 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 1-100μm.

[0014] And / or, the additives include dispersants, lubricants, and antioxidants. A good dispersant allows for better dispersion of metal powder in the masterbatch, preventing the formation of pits and depressions. In this invention, the dispersant is at least one of sodium dodecylbenzenesulfonate, sodium pentadecylbenzenesulfonate, sodium octadecylbenzenesulfonate, silicates, alkali metal phosphates, triethylhexylphosphate, sodium dodecyl sulfate, methylpentanol, polyacrylamide, glucon, and fatty acid polyethylene glycol esters.

[0015] As a further improvement of the above-mentioned solution of the present invention, the preparation method of the paint-free metallic 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, paint-free metallic powder and additives are added to a high-speed mixer in proportion and mixed and dispersed for 10-15 minutes. Finally, the mixture is added to a twin-screw extruder and extruded to obtain paint-free metallic masterbatch.

[0016] As a further improvement to the above-described scheme of the present invention, the high-flow modifier is at least one selected from ethylene methyl acrylate copolymer, maleic anhydride-grafted acrylonitrile-styrene copolymer, maleimide-grafted acrylonitrile-styrene copolymer, and acetylsuccine-acrylonitrile-styrene copolymer. Preferably, the high-flow modifier is ethylene methyl acrylate copolymer. Using a low-molecular-weight modifier greatly improves the material's flowability without affecting its physical properties, and also facilitates the uniformity of the metal powder's flow in the melt, reducing the formation of flow marks.

[0017] As a further improvement to the above-described scheme of the present invention, the filler is at least one selected from talc, barium sulfate, calcium carbonate, and a mixture of magnesium hydroxide and magnesium sulfate. Preferably, the aspect ratio of the filler is 1-3:1; a higher aspect ratio can improve the dimensional stability and strength of the material, but an excessively high aspect ratio can also affect the texture of the paint-free material and the dispersion of the metal powder; while a smaller aspect ratio has less impact on the dispersion of the metal powder; a lower aspect ratio, to a certain extent, makes the flow of the metal powder more stable, reduces tumbling in complex structures, and can also improve the strength and dimensional stability of the material.

[0018] As a further improvement to the above-described solution of the present invention, the additives include antioxidants and lubricants.

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

[0020] This invention proposes the application of a low-shrinkage, high-flow, spray-free filler reinforcement material as described above in automotive, electronic, and home appliance materials.

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

[0022] The low-shrinkage, high-flow, spray-free filler-reinforced material provided by this invention improves the dispersion of metal powder in the material by pre-forming metal powder into masterbatch; the introduction of a high-flow modifier greatly improves the material's fluidity and facilitates the uniformity of metal powder flow in the melt, reducing the generation of flow marks; the addition of filler can improve the material's strength and dimensional stability, and when the filler's aspect ratio is appropriate, it can help the metal powder flow smoothly, reduce tumbling in complex structures, and mitigate the generation of flow marks. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention.

[0024] Unless otherwise defined, 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 pertains. 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.

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

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

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

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

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

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

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

[0032] Compatibilizers: INEOS Styrin SMA 127, heat distortion temperature 120℃ (0.45MPa); Lyon Basel SMA263, heat distortion temperature 126℃ (0.45MPa);

[0033] No-spray metal powder #1: Aluminum powder, LX-1820 Xuyang, particle size 5-10μm;

[0034] No-spray metal powder #2: Aluminum powder, M-1020 Clariant, particle size 10-30μm;

[0035] No-spray metal powder #3: Aluminum powder, BASF RK72008, particle size 10-50μm;

[0036] No-spray metal powder #4: Aluminum powder, M005 Cabot aluminum silver sand, particle size 20-100μm;

[0037] No-spray 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] Packing material #1: Barium sulfate, 3000 mesh;

[0042] Filler #2: Magnesium hydroxide-magnesium sulfate mixture, 5000 mesh, length-to-diameter ratio 3:1;

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

[0044] All of the above-mentioned raw materials are commercially available. The above-mentioned raw materials are only used to illustrate the source and composition of the reagents used in the experiments of this invention, so as to fully disclose them, and do not mean that the 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 this invention are conventional reagents, methods and equipment in this technical field.

[0046] Example 1

[0047] This embodiment proposes a low-shrinkage, high-flow, paint-free filler-reinforced material, comprising the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:71:3:5:1. The paint-free metallic masterbatch comprises the following components: ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, paint-free metallic powder 1#, and additives; by weight, the ratio of ABS resin 1#, PCTG resin 1#, PMMA resin 1#, compatibilizer, paint-free metallic powder 1#, and additives is 76:5:5:3:10:1.

[0048] The preparation method of the low-shrinkage, high-flow, spray-free filler-reinforced material in this embodiment includes the following steps:

[0049] (1) Preparation of paint-free metallic masterbatch: By weight, ABS resin 1#, PCTG resin 1#, PMMA resin 1# and compatibilizer are added to the high-speed mixer and mixed for 3-5 minutes. Then, paint-free metallic powder 1# and additives are added to the high-speed mixer and mixed and dispersed for 10 minutes. Finally, the mixture is added to a twin-screw extruder and extruded to obtain paint-free metallic masterbatch.

[0050] (2) The paint-free metallic masterbatch obtained 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 paint-free filled and reinforced material.

[0051] Example 2

[0052] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

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

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

[0055] Example 3

[0056] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0057] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0059] Example 4

[0060] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0061] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0063] Example 5

[0064] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

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

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

[0067] Example 6

[0068] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0069] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0071] Example 7

[0072] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0073] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0075] Example 8

[0076] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0077] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0079] Example 9

[0080] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0081] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0083] Example 10

[0084] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0085] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin #2, high-flow modifier, filler #1, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin #1, high-flow modifier, filler #1, and additives is 20:61:5:10:1.

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

[0087] Example 11

[0088] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

[0089] The low-shrinkage, high-flow, paint-free filler-reinforcing material of this embodiment comprises the following components: paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high-flow modifier, filler 1#, and additives is 20:66:3:10:1.

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

[0091] Example 12

[0092] This embodiment uses the same implementation method as Embodiment 1, but differs from Embodiment 1 in that:

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

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

[0095] Comparative Example 1

[0096] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

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

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

[0099] Comparative Example 2

[0100] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

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

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

[0103] Comparative Example 3

[0104] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

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

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

[0107] Comparative Example 4

[0108] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

[0109] The low-shrinkage, high-flow, paint-free filler-reinforced material of this comparative example contains the following components: paint-free metallic masterbatch, ABS resin 1#, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, filler 1#, and additives is 20:74:5:1.

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

[0111] Comparative Example 5

[0112] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

[0113] The paint-free filler reinforcement material of this comparative example contains the following components: paint-free metallic masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 20:45:3:30:1.

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

[0115] Comparative Example 6

[0116] This comparative example provides a paint-free filler reinforcement material. This comparative example uses the same implementation method as Example 1, but differs from Example 1 in that:

[0117] The paint-free filler reinforcement material of this comparative example contains the following components: paint-free metallic masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives; by weight, the ratio of paint-free metallic masterbatch, ABS resin 1#, high flow modifier, filler 1#, and additives is 50:41:3:5:1.

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

[0119] Test case

[0120] The paint-free filler-reinforced 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, use a gloss tester to test the plane of the color sample and read the data at 60°.

[0122] Flow mark evaluation: The flow marks on the surface of the color sample are evaluated using a complex mold;

[0123] Pockmark test: An internal evaluation method is used, primarily based on visual inspection;

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

[0125] Shrinkage test: GB / T 13951 shall be adopted;

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

[0127] Table 1 Performance Test Results

[0128]

[0129]

[0130] As can be seen from the results in Table 1:

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

[0132] As can be seen from the shrinkage rate test results of Examples 1-12, the material prepared by the present invention can achieve a reduction in dimensional shrinkage rate;

[0133] Compared with Comparative Examples 1, 3, and 5-6, the materials prepared in Examples 1-12 of the present invention show significantly improved flow marks, good metal powder dispersion, and better appearance;

[0134] Compared with Examples 1-12, since PMMA resin was not added when preparing the paint-free metallic masterbatch in Comparative Example 2, the scratch resistance was 2B, while the scratch resistance of the materials in 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 filler-reinforced material obtained by this invention has the advantages of high gloss, low flow marks, good appearance, and low shrinkage. Moreover, compared with conventional materials, its scratch resistance is improved to a certain extent.

[0136] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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 embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A low-shrinkage, high-flow, spray-free filler reinforcement material, characterized in that, It is prepared from the following components in parts by weight: 29-99 parts ABS resin, 1-20 parts non-spraying metallic color masterbatch, 1-5 parts high flow modifier, 5-15 parts filler, and 1 part additive. The paint-free metallic masterbatch is prepared from the following components in parts by weight: 44-99 parts ABS resin, 5-10 parts PCTG resin, 5-20 parts PMMA resin, 1-5 parts compatibilizer, 5-20 parts paint-free metallic powder, and 0.1-1 parts additives; the high-flow modifier is ethylene methyl acrylate copolymer.

2. The low-shrinkage, high-flow, spray-free filler-reinforcing material according to claim 1, 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 melt index of 3.5 g / 10 min, and a molecular weight of 80,000-200,000.

3. The low-shrinkage, high-flow, spray-free filler-reinforcing material according to claim 1, characterized in that, The compatibilizer is a styrene-maleic anhydride copolymer; And / or, the particle size of the spray-free metal powder is 1-100 μm; And / or, the additives include dispersants, lubricants, and antioxidants.

4. The low-shrinkage, high-flow, spray-free filler reinforcement material according to claim 1, characterized in that, The preparation method of the paint-free metallic 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, paint-free metallic powder and additives are added to a high-speed mixer in proportion and mixed and dispersed for 10-15 minutes. Finally, the mixture is added to a twin-screw extruder and extruded to obtain paint-free metallic masterbatch.

5. The low-shrinkage, high-flow, spray-free filler-reinforcing 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 length-to-diameter ratio of the packing is 1-3:

1.

6. The low-shrinkage, high-flow, spray-free filler-reinforcing material according to claim 1, characterized in that, The additives include antioxidants and lubricants.

7. A method for preparing a low-shrinkage, high-flow, spray-free reinforced material as described in any one of claims 1-6, characterized in that, It includes the following steps: ABS resin, paint-free metallic masterbatch, high-flow modifier, filler, and additives are added to a twin-screw extruder in a certain proportion and extruded to obtain a low-shrinkage, high-flow paint-free filled and reinforced material.

8. The application of a low-shrinkage, high-flow, paint-free filler-reinforced material as described in any one of claims 1-6 in automotive, electronic, and home appliance materials.

Images