A flow pattern masterbatch and its preparation method and application

Abstract

The invention relates to a flow pattern masterbatch for PC / ABS material injection molding and a preparation method and application thereof, belonging to the technical field of spray-free coloring of PC / ABS materials. The flow pattern masterbatch comprises the following components: 20-45 parts of PC resin; 30-60 parts of PET resin; 3-5 parts of ABS high-rubber powder; 5-15 parts of colorant; and 0-6 parts of functional additives. The prepared flow pattern masterbatch is uniformly mixed with PC / ABS resin in a certain proportion, and can be directly injection molded to obtain an aesthetic material with a special flow pattern effect. At the same time, different flow pattern effects can be obtained by changing the type of pigment in the masterbatch.

Description

Technical Field

[0001] The invention relates to a flow pattern masterbatch for PC / ABS material injection molding and a preparation method thereof, belonging to the technical field of spray-free coloring of PC / ABS materials. Background Art

[0002] At present, in the field of masterbatch technology, there are very few reports on rhytide masterbatch and imitation marble masterbatch that can be applied to PC / ABS materials. Therefore, in practical applications, in order to achieve the special rhytide effect of PC / ABS materials, it is necessary to print or bond a film with rhytide effect on the surface of the product after injection molding. The production efficiency is low, and the surface layer with rhytide effect is easy to fall off during use. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a rhyme masterbatch, which can be added to PC / ABS material by one or more of the rhyme masterbatches and directly injection molded to obtain a product with a special rhyme appearance effect. At the same time, by changing the type of pigment in the masterbatch, different rhyme effects can also be obtained.

[0004] The present invention provides a rhytometric masterbatch, comprising the following components in parts by weight:

[0005] 20-45 parts of PC resin;

[0006] PET resin 30-60 parts;

[0007] 3-5 parts of ABS high-glue powder;

[0008] Colorant 5-15 parts;

[0009] Functional additives 0-6 parts.

[0010] Preferably, the PC resin content can be any value between 20-45 parts, such as 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, more preferably 30-40 parts;

[0011] Preferably, the PET resin content can be any value between 30 and 60 parts, such as 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 ​​parts, 49 parts, 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, more preferably 35-45 parts.

[0012] The colorant content can be any value between 5-15 parts, such as 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, and 14 parts.

[0013] Functional additives are optionally added, preferably in an amount of 1-5 parts, more preferably 2-4 parts.

[0014] Wherein, the melt flow rate of the PC resin is 1-15 g / 10 min when measured at 300° C., 1.12 kg and ASTM D-1238-2010 standard, and the corresponding melt flow rate can be any value of 1-15 g / 10 min, such as 2 g / 10 min, 3 g / 10 min, 4 g / 10 min, 5 g / 10 min, 6 g / 10 min, 7 g / 10 min, 8 g / 10 min, 9 g / 10 min, 10 g / 10 min, 11 g / 10 min, 12 g / 10 min, 13 g / 10 min, 14 g / 10 min, and more preferably 3-8 g / 10 min.

[0015] Wherein, the PET resin refers to polyethylene terephthalate, which is a condensation product of terephthalic acid and ethylene glycol, and preferably has an intrinsic viscosity of 0.70-1.00 dl / g. The test method is in accordance with ASTM D4603, and the corresponding intrinsic viscosity can be any value from 0.70 to 1.00 dl / g, such as 0.75 dl / g, 0.80 dl / g, 0.85 dl / g, 0.90 dl / g, 0.95 dl / g, and more preferably 0.75-0.85 dl / g.

[0016] The ABS high-rubber powder has good compatibility with ABS resin, and the melt flow rate is 2-6 g / 10 min at 200° C. and 21.6 kg according to ASTM D-1238-2010 standard.

[0017] Preferably, the optional functional additives include one or more of a compatibilizer and an antioxidant.

[0018] The antioxidant is one or more of a phenol antioxidant, an amine antioxidant, and a phosphite antioxidant.

[0019] The compatibilizer is POE grafted glycidyl methacrylate (GMA), and the melt flow rate is measured at 190° C. and 2.16 kg according to ASTM D-1238-2010 standard to be 2-5 g / 10 min.

[0020] Preferably, the colorant comprises a combination of one or more pigments, a combination of one or more dyes, a combination of one pigment and multiple dyes, a combination of one dye and multiple pigments, or a combination of multiple pigments and multiple dyes.

[0021] The colorant is preferably titanium dioxide, carbon black, red iron oxide or a composite inorganic pigment, or transparent blue, or a colorant commonly used in the industry.

[0022] Preferably, the colorant is titanium dioxide RCL-69, Coster; or BP717, Cabot; or 42-107A, Dormade Fine Chemicals; or 130M, Lanxess Chemicals; or HZ6355, Dongguan Qibo Fine Chemicals; transparent blue AP, Changzhou Yabang.

[0023] In addition, the present invention also provides a method for preparing a rhytoid masterbatch, the preparation method comprising the following steps:

[0024] S1: Use a hot air drying oven to fully dry PC and PET resins at a drying temperature of 110-120°C and a drying time of 0.5-2 hours;

[0025] S2: Mix all the above materials at high speed for 1-10 minutes.

[0026] S3: The mixed materials are extruded and granulated by a twin-screw extruder to obtain a finished product at an extrusion temperature of 240-260°C.

[0027] The present invention also provides the use of the above-mentioned rhytographic masterbatch in aesthetic materials, wherein the aesthetic material is a material obtained by mixing the above-mentioned rhytographic masterbatch with a resin. The aesthetic material can be applied to housings of household appliances, automobile decorative parts, housings of electronic and electrical products, and the like.

[0028] Preferably, the rhytide effect aesthetic material comprises PC / ABS resin and the rhytide masterbatch, and the weight ratio of the rhytide masterbatch to the PC / ABS resin is 2-8:98-92. In one embodiment, the corresponding ratio may be 4:96.

[0029] Among them, in the PC / ABS resin, the weight ratio of PC resin to ABS resin is 20-90:80-10, preferably 40-80:60-20, and more preferably 60-70:40-30.

[0030] The preparation method of the flow pattern effect aesthetic material is as follows: adding the prepared flow pattern masterbatch into the commonly used PC / ABS mixed resin according to the above weight ratio, mixing evenly, and directly injecting the material to obtain the flow pattern effect aesthetic material.

[0031] Preferably, the PC / ABS resin used in the present invention is JH960-6300 NC001, which is a product produced by Kingfa Science & Technology Co., Ltd.

[0032] Preferably, the injection molding temperature is 240-250° C., the injection molding back pressure is 0-0.5 MPa, and the injection molding pressure is 40-60 MPa.

[0033] Beneficial effects:

[0034] (1) In all embodiments of the present invention, the flow pattern effect aesthetic material maintains a good flow pattern special effect during a continuous injection molding process of up to 4 hours, with a retention rate of 100%. When actually applied to plastic products, a very special appearance effect can be obtained.

[0035] (2) The present invention can achieve flow pattern effects of different colors by selecting different colorants to meet the appearance design requirements of different plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The color plate photo of Example 1;

[0037] Figure 2 This is a color plate photo of Example 6. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The following raw materials are used in the embodiments and comparative examples of the present invention:

[0040] PC-1 resin, purchased from LG, South Korea, brand PC 1300 03NP, melt flow rate of about 3g / 10min, measured at 300°C, 1.12kg, ASTMD-1238-2010;

[0041] PC-2 resin, purchased from Luxi Group LXTY1615, melt flow rate is about 15g / 10min, measured at 300℃, 1.12kg, ASTMD-1238-2010;

[0042] PC-3 resin, purchased from Luxi Group LXTY1920, melt flow rate is about 20g / 10min, measured at 300℃, 1.12kg, ASTMD-1238-2010;

[0043] PET-1 resin, PET BG80, Yizheng Chemical Fiber, intrinsic viscosity 0.80dl / g, test method according to ASTM D4603-2003;

[0044] PET-2 resin, PET SY-G015, purchased from Wujiang Shuangyang Polyester Modification Factory, intrinsic viscosity 1.0 dl / g, test method according to ASTM D4603-2003;

[0045] PET-3 resin, PET CR-7702, Zhuhai Huarun Chemical Materials, intrinsic viscosity 0.518dl / g

[0046] ABS high glue powder, ABS 60POWDER, Guoqiao Petrochemical, melt flow rate at 200℃, 21.6kg is 4.5g / 10min;

[0047] Antioxidants, RIANOX 1098, RIANOX 168, Tianjin Li’anlong;

[0048] Compatibilizer, Jiayirong Company, SOG-02, melt flow rate is about 3g / 10min, measured at 190℃, 1.12kg, ASTMD-1238-2010;

[0049] Colorant A: titanium dioxide RCL-69, Coster; BP717, Cabot; the weight ratio of RCL-69 to BP717 is 25:1;

[0050] Colorant B: 42-107A, Dormade Fine Chemicals; BP717, Cabot; 130M, Lanxess Chemicals; 42-107A: BP717: 130M weight ratio is 10:1:2;

[0051] Colorant C: HZ6355, Dongguan Qibo Fine Chemicals; titanium dioxide RCL-69, Koster; transparent blue AP, Changzhou Yabang; HZ6355: RCL-69: transparent blue AP weight ratio is 20:1:2;

[0052] PC / ABS resin: JH960-6300 NC001, produced by Kingfa Science & Technology Co., Ltd.

[0053] Table 1 shows the examples and comparative examples of the present invention prepared by the above preparation method.

[0054] The rhytographic masterbatch prepared in the embodiment was added to the PC / ABS resin and mixed evenly before injection molding. The injection molding process was as follows: injection temperature 240-250°C, injection back pressure 0-0.5MPa, injection pressure 40-60MPa, to obtain a color plate with a fluorescent rhytographic effect. The weight ratio of the rhytographic masterbatch to the PC / ABS resin was 4:96. In all embodiments, the color plates maintained an obvious rhytographic effect during the continuous injection molding process of up to 4 hours.

[0055] Among them, the flow effect is combined with sensory evaluation and non-melting particle detection, and the evaluation criteria are:

[0056] 1. The flow lines are clear and layered, without unmelted particles, and the number of clear lines within the range of 7cm*10cm is greater than or equal to 5, and the number of unmelted particles is visually 0, and the evaluation level is good;

[0057] 2. The flow lines are slightly blurred, the layering is not strong, there are no unmelted particles, and the number of blurred lines within the range of 7cm*10cm is less than 3, and the number of unmelted particles is less than 2 by visual inspection. The evaluation level is general;

[0058] 3. The flow lines are not clear, there is no sense of layering, there are many unmelted particles, and the number of fuzzy lines within the range of 7cm*10cm is greater than or equal to 3. The number of unmelted particles visually observed is greater than or equal to 2, and the evaluation level is poor.

[0059] 4. The detection method of the retention rate of the fluorescent flow effect of the injection molded color plate for 4 consecutive hours is: among all the injection molded color plates, the percentage of the color plates with good evaluation grade in the total number of color plates.

[0060] Table 1 Test results of embodiments and comparative examples

[0061]

[0062] Table 1 continued

[0063]

[0064] Figure 1 The photo was taken for the color plate of Example 1. The rich layered flow effect can be clearly seen in the photo, and the pattern is clear and textured; Figure 2 The photo taken of the color plate of Example 6 shows that the color plate is blue as a whole, and shows a yellow flow effect. The two colors complement each other, which highlights the sense of luxury. At the same time, the embodiments within the preferred range are better than the embodiments outside the preferred range in terms of flow effect retention rate.

[0065] It can be seen from the above embodiments and comparative examples that the selection of the intrinsic viscosity of the PET resin is very critical. If the viscosity is too low, the texture will easily disappear during a long injection molding process. The selection of the melt flow rate of the PC resin is also one of the key factors. If the melt flow rate is too high, the flow lines will disappear during the injection molding process and the flow line retention rate will decrease. In addition, the PC resin content cannot be too high. If it is too high, it will easily lead to the failure to form flow lines and the appearance of unmelted particles. On the contrary, if it is too low, it will easily lead to a decrease in the flow line retention rate and the disappearance of the flow lines.

[0066] Of course, those skilled in the art know that the above described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A rhytographic masterbatch for PC / ABS material, which is characterized in that it comprises the following components by weight: 24-45 parts of PC resin; PET resin 30-56 parts; 3-5 parts of ABS high glue powder; Colorant 5-15 parts; Functional additives 0-6 parts; The intrinsic viscosity of the PET resin is 0.70-0.90 dl / g, and the test method refers to ASTM D4603-2003; The melt flow rate of the PC resin is measured at 300° C., 1.12 kg, and according to ASTM D-1238-2010 standard to be 1-9 g / 10 min.

2. The rhytographic masterbatch according to claim 1, wherein the PC resin content is 30-40 parts; PET resin content is 35-45 parts; The content of functional additives is 1-5 parts.

3. The flow pattern masterbatch according to claim 1, wherein the melt flow rate of the ABS high-rubber powder is 2-6 g / 10 min when measured at 200°C, 21.6 kg and according to ASTM D-1238-2010 standard.

4. The rhytographic masterbatch according to claim 1, wherein the functional additive comprises one or more of a compatibilizer and an antioxidant; The antioxidant is one or more of a phenolic antioxidant, an amine antioxidant, and a phosphite antioxidant; The compatibilizer is POE grafted glycidyl methacrylate, and the melt flow rate is measured at 190° C. and 2.16 kg according to ASTM D-1238-2010 standard to be 2-5 g / 10 min.

5. The rhytographic masterbatch according to claim 1, wherein the colorant comprises one or more pigment combinations, one or more dye combinations, one pigment combined with multiple dyes, one dye combined with multiple pigments, or multiple pigments combined with multiple dyes.

6. The method for preparing the rhytide masterbatch according to any one of claims 1 to 5, wherein the technical feature is that: The preparation method The following steps are involved: S1: Use a hot air drying oven to fully dry PC and PET resins at a drying temperature of 110-120°C and a drying time of 0.5-2 hours; S2: Mix all the above materials at high speed for 1-10 minutes; S3: The mixed materials are extruded and granulated by a twin-screw extruder to obtain a finished product at an extrusion temperature of 240-260°C.

7. Use of the rhytographic masterbatch according to any one of claims 1 to 5 in aesthetic materials.

8. A rhyme effect aesthetic material, the technical feature of which is that the rhyme effect aesthetic material comprises PC / ABS resin and the rhyme masterbatch according to any one of claims 1 to 5, and the weight ratio of the rhyme masterbatch to the PC / ABS resin is 2-8:98-92.

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