PETG multifunctional injection molding improver master batch, preparation method and plastic material

Abstract

The invention discloses a PETG multifunctional injection molding improving agent master batch which comprises the following raw materials in parts by weight: 70-80 parts of a PETG carrier, 1-2 parts of an inorganic nucleating agent, 0.2-0.6 part of an antioxidant, 0.15-0.5 part of a catalyst, 6-8 parts of an internal lubricant, 4-6 parts of a low molecular weight nucleating agent, 3-5 parts of a crystallization accelerant and 3-5 parts of an external lubricant, the invention relates to a high-temperature-resistant and high-pressure-resistant plastic which is prepared from the following components in parts by weight: 0.3-0.5 part of a coupling agent, 1-3 parts of an assistant ester exchange inhibitor, 0.5-3 parts of boehmite, 0.3-1 part of hydrotalcite, 0.05-1 part of BASF blue purple and 0.5-3 parts of an anti-hydrolysis agent. The preparation method comprises the following steps: uniformly stirring the PETG carrier powder, the inorganic nucleating agent, the low molecular weight nucleating agent, the coupling agent, the catalyst, the crystallization accelerant, the antioxidant and the BASF ultramarine in sequence; sequentially pouring an assistant ester exchange inhibitor and an anti-hydrolysis agent; putting the initial material into a hopper of a granulator for granulation, and adding boehmite, hydrotalcite, an internal lubricant and an external lubricant into the granulator; the prepared master batch is added into PETG, so that the transparency of a product is obviously improved, the haze is reduced, scratches generated in an injection molding process are reduced, and the toughness of the product is improved.

Description

Technical Field

[0001] The invention relates to the field of injection molding modified materials, and in particular to a PETG multifunctional injection molding improver masterbatch, a preparation method and a plastic material. Background Art

[0002] PETG (polyethylene terephthalate-1,4-cyclohexanedimethanol) is a transparent, non-crystalline copolyester. The commonly used comonomer of PETG is 1,4-cyclohexanedimethanol (CHDM, Cylclohexylenedimethylene), and its full name is polyethylene terephthalate-1,4-cyclohexanedimethanol.

[0003] PETG is a product of terephthalic acid (PTA), ethylene glycol (EG) and 1,4-cyclohexanedimethanol (CHDM) by ester exchange. Compared with PET, it has more 1,4-cyclohexanedimethanol comonomers, and compared with PCT, it has more ethylene glycol comonomers. Therefore, the performance of PETG is very different from that of PET and PCT. PETG sheet has outstanding toughness and high impact strength. Its impact strength is 3 to 10 times that of modified polyacrylates. It has a wide processing range, high mechanical strength and excellent flexibility. Compared with PVC, it has higher transparency, better gloss, easier printing and environmental protection advantages. Therefore, PETG materials are often used in high-end cosmetic packaging or storage boxes.

[0004] PETG can also be prepared by using NPG and other diethylene glycol as monomers for polymerization. Compared with the preparation using CHDM as raw material, it has the advantage of lower cost, but it also has the following disadvantages:

[0005] 1. Product fluidity and external lubrication cannot be taken into account at the same time, resulting in the product having fluidity but poor demoulding effect. It is necessary to spray the demoulding agent by hand for each injection. Or after the demoulding effect is solved, the product fluidity is insufficient, and the product injection is not full and has water marks.

[0006] 2. Insufficient toughness, resistance to temperature difference, poor haze, long production cycle, etc.

[0007] 3. The product is easily scratched, especially when demoulding, which may cause obvious scratches on the surface of the product;

[0008] 3. Product transparency has an impact. Summary of the invention

[0009] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a PETG multifunctional injection molding improver masterbatch, a preparation method, and a plastic material. Adding the improver masterbatch to PETG polymerized with NPG can directly solve the above-mentioned problems.

[0010] The objective of the present invention is achieved through such technical solution:

[0011] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0012] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent.

[0013] Furthermore, the raw material also includes 1 to 3 parts by weight of an ester exchange inhibitor.

[0014] Furthermore, the raw material also includes 0.5 to 3 parts by weight of boehmite.

[0015] Furthermore, the raw materials also include 0.3 to 1 parts of hydrotalcite, 0.05 to 1 parts of BASF ultramarine violet, and 0.5 to 3 parts of anti-hydrolysis agent by weight.

[0016] Furthermore, the raw materials also include, by weight: 1 to 3 parts of an ester exchange inhibitor, 0.5 to 3 parts of boehmite, 0.3 to 1 part of hydrotalcite, 0.05 to 1 part of BASF ultramarine violet, and 0.5 to 3 parts of an anti-hydrolysis agent.

[0017] A method for preparing a multifunctional injection molding improver masterbatch comprises the following steps:

[0018] Dry and grind the PETG carrier into powder;

[0019] Place half of the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine, and the remaining PETG carrier powder into a stirring device in sequence and stir evenly;

[0020] The stirred material is placed in a low-speed cooling stirring pot, and the ester exchange inhibitor and anti-hydrolysis agent are poured in sequence while stirring until the initial material is obtained;

[0021] Mix boehmite and hydrotalcite evenly;

[0022] Mix the internal lubricant and the external lubricant evenly;

[0023] The initial material is placed in the hopper of the granulator for granulation. The granulator is divided into three temperature zones in sequence. The granulation temperature of the first temperature zone is 280-320 degrees Celsius, the granulation temperature of the second temperature zone is 270-250 degrees Celsius, and the granulation temperature of the third temperature zone is 260-240 degrees Celsius;

[0024] During the granulation process, the boehmite and hydrotalcite are mixed and added to the granulator from the first temperature zone;

[0025] During the granulation process, the internal lubricant and the external lubricant are mixed and added into the granulator from the second temperature zone.

[0026] Furthermore, before the step of “mixing the boehmite and the hydrotalcite and adding them to the granulator from the first temperature zone”, the boehmite and the hydrotalcite are mixed and then vacuumed and then added to the granulator by side feeding;

[0027] Before "mixing the internal lubricant and the external lubricant and then injecting them into the granulator", the internal lubricant and the external lubricant are mixed and completely melted into liquid in a pre-melting tank, and then forcibly injected into the granulator by a liquid plunger pump.

[0028] Furthermore, the granulator includes fifteen zones of uniform length in sequence, the first zone to the sixth zone are the first temperature zone, the seventh zone to the tenth zone are the second temperature zone, and the eleventh zone to the fifteenth zone are the third temperature zone; the total time from the initial material entering the granulator to the material being discharged is 14 to 16 seconds;

[0029] Put the initial material into the hopper of the granulator for granulation

[0030] The boehmite and hydrotalcite are mixed and added to the granulator from the third zone;

[0031] The internal lubricant and the external lubricant are mixed and added into the granulator from the seventh zone.

[0032] Furthermore, in the step of "drying and grinding the PETG carrier into powder", the PETG carrier is dried to a moisture content of no more than 50 PPM; the particle size of the ground PETG carrier is 90-110 mesh;

[0033] The material temperature during the stirring of “sequentially placing half the mass of the PETG carrier powder, the coupling agent, the catalyst, the crystallization accelerator, the antioxidant, the BASF ultramarine, and the remaining PETG carrier powder into a stirring device and stirring evenly” does not exceed 70 degrees Celsius;

[0034] In the step of “placing the stirred material into a low-speed cooling stirring pot, and pouring in the ester exchange inhibitor and anti-hydrolysis agent in sequence while stirring until the material is evenly stirred”, the cooling water temperature does not exceed 20 degrees Celsius.

[0035] A plastic material, the raw material comprises the PETG multifunctional injection molding improver masterbatch described in one of the above technical solutions, or comprises the masterbatch prepared by the PETG multifunctional injection molding improver masterbatch preparation method.

[0036] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0037] 1. The masterbatch prepared by the present invention is added to PETG prepared with NPG as raw material, which has high fluidity and can be demoulded without using an additional release agent. At the same time, the fluidity of the raw material during the injection molding process is good, and the raw material in the injection molding cavity is full.

[0038] 2. After adding masterbatch, the surface hardness, toughness and temperature resistance of PETG prepared with NPG as raw material are improved. It is not easy to produce scratches during demoulding, the haze is reduced, and the transparency is improved, so that the process can be widely used in high-end cosmetic packaging materials or storage boxes, etc.

[0039] 3. High-quality PETG plastic products can be prepared using PETG prepared with NPG as raw material. Compared with the injection molding preparation of PETG products directly prepared with CHDM as raw material, the cost is greatly reduced.

[0040] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the embodiments.

[0042] The specifications and models of the raw materials used in the following examples are as follows:

[0043] PETG carrier: Huarun CR-5083;

[0044] Inorganic nucleating agent: 6000 mesh talc;

[0045] Low molecular weight nucleating agent: American Henifenger 285P;

[0046] Meat lubricant: The lubricant is Baida 7806 from Taiwan, China;

[0047] Crystallization accelerator: Japan Aidico RS-735;

[0048] External lubricant: British Croda PET100;

[0049] Hydrotalcite: Japan Sekisui HT-V;

[0050] Anti-hydrolysis agent: Anti-hydrolysis agent BK-503;

[0051] Coupling agent: commercially available silane coupling agent HK-560;

[0052] Ultramarine Purple: BASF Ultramarine Purple;

[0053] Catalyst: catalyst nkc-9;

[0054] Antioxidant: Antioxidant 1076;

[0055] Inhibitor: inhibitor 939;

[0056] Boehmite: Boehmite zcm-01.

[0057] Embodiment 1:

[0058] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0059] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent.

[0060] Prepare masterbatch from raw materials according to the following steps:

[0061] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0062] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0063] Mix the internal lubricant and the external lubricant evenly;

[0064] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0065] Put the initial material into the hopper of the granulator for granulation;

[0066] During the granulation process, the internal lubricant and the external lubricant are mixed and melted into liquid through a pre-melting tank, and then forced into the seventh zone of the granulator by a liquid plunger pump.

[0067] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0068] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 9 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0069] Table 1 Experimental group 1

[0070]

[0071] Table 2 Experimental group 2

[0072]

[0073] Table 3 Experimental group 3

[0074]

[0075] Table 4 Experimental group 4

[0076]

[0077] Table 5 Experimental group 5

[0078]

[0079] Table 6 Experimental Group 6

[0080]

[0081] Table 7 Experimental group 7

[0082]

[0083] Table 8 Experimental Group 8

[0084]

[0085] Table 9 Experimental Group 9

[0086]

[0087] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 10.

[0088] Table 10 Experimental Group 10

[0089]

[0090] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially experimental group 9, which is relatively balanced in all aspects.

[0091] Embodiment 2:

[0092] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0093] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization promoter, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent, 1-3 parts of ester exchange inhibitor.

[0094] Prepare masterbatch from raw materials according to the following steps:

[0095] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0096] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0097] Place the stirred material into a slow-cooling stirring pot, and pour in the ester exchange inhibitor while stirring until the material is evenly stirred to obtain the initial material;

[0098] Mix the internal lubricant and the external lubricant evenly;

[0099] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0100] Put the initial material into the hopper of the granulator for granulation;

[0101] During the granulation process, the internal lubricant and the external lubricant are mixed and melted into liquid through a pre-melting tank, and then forced into the seventh zone of the granulator by a liquid plunger pump.

[0102] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0103] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 6 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0104] Table 11 Experimental Group 11

[0105]

[0106] Table 12 Experimental Group 12

[0107]

[0108] Table 13 Experimental Group 13

[0109]

[0110] Table 14 Experimental Group 14

[0111]

[0112] Table 15 Experimental Group 15

[0113]

[0114] Table 16 Experimental Group 16

[0115]

[0116] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 17.

[0117] Table 17 Experimental Group 17

[0118]

[0119] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 16, which is relatively balanced in all aspects.

[0120] Embodiment 3:

[0121] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0122] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts and 0.5-3 parts of coupling agent.

[0123] Prepare masterbatch from raw materials according to the following steps:

[0124] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0125] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0126] Mix the internal lubricant and the external lubricant evenly;

[0127] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0128] Placing the initial material into the hopper of the granulator for granulation;

[0129] During the granulation process, the boehmite is vacuumed and then added to the third zone of the granulator by side feeding; the internal lubricant and the external lubricant are mixed and melted into liquid through a pre-melting tank, and then forced into the seventh zone of the granulator by a liquid plunger pump.

[0130] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0131] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 3 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0132] Table 18 Experimental Group 18

[0133]

[0134] Table 19 Experimental Group 19

[0135]

[0136] Table 20 Experimental Group 20

[0137]

[0138] Table 21 Experimental Group 21

[0139] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 22.

[0140] Table 22 Experimental Group 22

[0141]

[0142] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 20, which is relatively balanced in all aspects.

[0143] Embodiment 4:

[0144] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0145] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent, 0.3-1 parts of hydrotalcite, 0.05-1 parts of BASF ultramarine violet, and 0.5-3 parts of anti-hydrolysis agent.

[0146] Prepare masterbatch from raw materials according to the following steps:

[0147] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0148] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine violet, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0149] Place the stirred material into a low-speed cooling stirring pot, and stir while adding an anti-hydrolysis agent until the material is evenly stirred to obtain the initial material;

[0150] Mix the internal lubricant and the external lubricant evenly;

[0151] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0152] Put the initial material into the hopper of the granulator for granulation;

[0153] During the granulation process, the hydrotalcite is vacuumized and added to the granulator from the third zone; the internal lubricant and the external lubricant are mixed and completely melted into liquid in a pre-melting tank, and then forcedly injected into the seventh zone of the granulator by a liquid plunger pump.

[0154] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0155] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 3 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0156] Table 23 Experimental Group 23

[0157]

[0158] Table 24 Experimental Group 24

[0159]

[0160] Table 25 Experimental Group 25

[0161]

[0162] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 26.

[0163] Table 26 Experimental Group 26

[0164]

[0165] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 25, which is relatively balanced in all aspects.

[0166] Embodiment 5:

[0167] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0168] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization promoter, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent, 0.3-1 parts of hydrotalcite, 0.05-1 parts of BASF ultramarine violet, 0.5-3 parts of anti-hydrolysis agent, and 1-3 parts of ester exchange inhibitor.

[0169] Prepare masterbatch from raw materials according to the following steps:

[0170] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0171] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine violet, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0172] The stirred material is placed in a low-speed cooling stirring pot, and while stirring, an ester exchange inhibitor and an anti-hydrolysis agent are added in sequence until the material is stirred evenly to obtain the initial material;

[0173] Mix the internal lubricant and the external lubricant evenly;

[0174] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0175] Put the initial material into the hopper of the granulator for granulation;

[0176] During the granulation process, the hydrotalcite is vacuumized and added to the granulator from the third zone; the internal lubricant and the external lubricant are mixed and completely melted into liquid in a pre-melting tank, and then forcedly injected into the seventh zone of the granulator by a liquid plunger pump.

[0177] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0178] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 3 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0179] Table 27 Experimental Group 27

[0180]

[0181] Table 28 Experimental Group 28

[0182]

[0183] Table 29 Experimental Group 29

[0184]

[0185] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 30.

[0186] Table 30 Experimental Group 30

[0187]

[0188] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 29, which is relatively balanced in all aspects.

[0189] Embodiment 6:

[0190] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0191] 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent, 0.3-1 parts of hydrotalcite, 0.05-1 parts of BASF ultramarine violet, 0.5-3 parts of anti-hydrolysis agent and 0.5-3 parts of boehmite.

[0192] Prepare masterbatch from raw materials according to the following steps:

[0193] The PETG carrier is dried to a moisture content of no more than 50PPM; the particle size of the ground PETG carrier is 90-110 mesh

[0194] Place half the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine violet, and the remaining PETG carrier powder into a stirring device in sequence, stir evenly, and the material temperature does not exceed 70 degrees Celsius during stirring;

[0195] Place the stirred material into a low-speed cooling stirring pot, add anti-hydrolysis agent while stirring until the material is evenly stirred to obtain the initial material;

[0196] Mix the internal lubricant and the external lubricant evenly;

[0197] A granulator including fifteen zones in sequence is selected, the first to sixth zones are the first temperature zones, the granulation temperature is 280-320 degrees Celsius, the granulation temperature is 270-250 degrees Celsius, the seventh to tenth zones are the second temperature zones, the eleventh to fifteenth zones are the third temperature zones, and the granulation temperature is 260-240 degrees Celsius; the granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the discharge is 14 to 16 seconds;

[0198] Placing the initial material into the hopper of the granulator for granulation;

[0199] During the granulation process, the hydrotalcite and boehmite are vacuumed and added into the granulator from the third zone; the internal lubricant and the external lubricant are mixed and melted into liquid through a pre-melting tank, and then forced into the seventh zone of the granulator through a liquid plunger pump.

[0200] Finally, the prepared masterbatch is obtained from the tail of the granulator.

[0201] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain 3 groups of experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0202] Table 31 Experimental Group 31

[0203]

[0204] Table 32 Experimental Group 32

[0205]

[0206] Table 33 Experimental Group 33

[0207]

[0208] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 34.

[0209] Table 34 Experimental Group 34

[0210]

[0211] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 33, which is relatively balanced in all aspects.

[0212] Embodiment 7:

[0213] A PETG multifunctional injection molding improver masterbatch, the raw materials include by weight:

[0214] PETG carrier 70-80 parts, inorganic nucleating agent 1-2 parts, antioxidant 0.2-0.6 parts, catalyst 0.15-0.5 parts, internal lubricant 6-8 parts, low molecular weight nucleating agent 4-6 parts, crystallization accelerator 3-5 parts, external lubricant 3-5 parts, coupling agent 0.3-0.5 parts, ester exchange inhibitor 1-3 parts, boehmite 0.5-3 parts, hydrotalcite 0.3-1 parts, BASF ultramarine violet 0.05-1 parts, anti-hydrolysis agent 0.5-3 parts.

[0215] The preparation method comprises the following steps:

[0216] Dry and grind the PETG carrier into powder;

[0217] Place half of the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine, and the remaining PETG carrier powder into a stirring device in sequence and stir evenly;

[0218] The stirred material is placed in a low-speed cooling stirring pot, and the ester exchange inhibitor and anti-hydrolysis agent are poured in sequence while stirring until the initial material is obtained;

[0219] Mix boehmite and hydrotalcite evenly;

[0220] Mix the internal lubricant and the external lubricant evenly;

[0221] The initial material is placed in the hopper of the granulator for granulation. The granulator is divided into three temperature zones in sequence. The granulation temperature of the first temperature zone is 280-320 degrees Celsius, the granulation temperature of the second temperature zone is 270-250 degrees Celsius, and the granulation temperature of the third temperature zone is 260-240 degrees Celsius;

[0222] During the granulation process, the boehmite and hydrotalcite are mixed and added to the granulator from the first temperature zone;

[0223] During the granulation process, the internal lubricant and the external lubricant are mixed and added into the granulator from the second temperature zone.

[0224] Before the step of “mixing the boehmite and the hydrotalcite and adding them to the granulator from the first temperature zone”, the boehmite and the hydrotalcite are mixed, vacuumized, and then added to the granulator by side feeding;

[0225] Before "mixing the internal lubricant and the external lubricant and then injecting them into the granulator", the internal lubricant and the external lubricant are mixed and completely melted into liquid in a pre-melting tank, and then forcibly injected into the granulator by a liquid plunger pump.

[0226] The granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the material being discharged is 14 to 16 seconds;

[0227] Put the initial material into the hopper of the granulator for granulation

[0228] The boehmite and hydrotalcite are mixed and added to the granulator from the third zone;

[0229] The internal lubricant and the external lubricant are mixed and added into the granulator from the seventh zone.

[0230] In the step of "drying and grinding the PETG carrier into powder", the PETG carrier is dried to a moisture content of no more than 50 PPM; the particle size of the ground PETG carrier is 90-110 mesh;

[0231] The material temperature during the stirring of “sequentially placing half the mass of the PETG carrier powder, the coupling agent, the catalyst, the crystallization accelerator, the antioxidant, the BASF ultramarine, and the remaining PETG carrier powder into a stirring device and stirring evenly” does not exceed 70 degrees Celsius;

[0232] In the step of “placing the stirred material into a low-speed cooling stirring pot, and pouring in the ester exchange inhibitor and anti-hydrolysis agent in sequence while stirring until the material is evenly stirred”, the cooling water temperature does not exceed 20 degrees Celsius.

[0233] The prepared masterbatch was added to PETG polymerized with NPG and other diethylene glycol as monomers at 1% by weight to produce products, and the products were tested to obtain group 10 experimental results. The value after each raw material in the table represents the fraction by weight, the haze unit is H, the transparency unit is T, the friction unit is kgf, and the tensile strength unit is MPa.

[0234] Table 35 Experimental Group 35

[0235]

[0236] Table 36 Experimental Group 36

[0237]

[0238] Table 37 Experimental Group 37

[0239]

[0240] Without adopting the technical solution of this embodiment, an experiment was directly conducted on PETG polymerized using diethylene glycol such as NPG as a monomer to obtain experimental group 38.

[0241] Table 38 Experimental Group 38

[0242]

[0243] It can be seen from the above experimental examples that after adopting the masterbatch of the present technical solution, the haze and transparency of PETG polymerized by using diethylene glycol such as NPG as monomers are less affected, but the friction is greatly reduced and the tensile strength is greatly improved, especially the experimental group 37, which is relatively balanced in all aspects.

[0244] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A PETG multifunctional injection molding improver masterbatch, characterized in that: The raw materials include by weight: 70-80 parts of PETG carrier, 1-2 parts of inorganic nucleating agent, 0.2-0.6 parts of antioxidant, 0.15-0.5 parts of catalyst, 6-8 parts of internal lubricant, 4-6 parts of low molecular weight nucleating agent, 3-5 parts of crystallization accelerator, 3-5 parts of external lubricant, 0.3-0.5 parts of coupling agent.

2. The PETG multifunctional injection molding improving agent masterbatch according to claim 1, characterized in that: The raw materials also include 1 to 3 parts by weight of an ester exchange inhibitor.

3. The PETG multifunctional injection molding improving agent masterbatch according to claim 1, characterized in that: The raw material also includes 0.5 to 3 parts by weight of boehmite.

4. The PETG multifunctional injection molding improver masterbatch according to any one of claims 1 to 3, characterized in that: The raw materials also include 0.3-1 parts of hydrotalcite, 0.05-1 parts of BASF ultramarine violet and 0.5-3 parts of anti-hydrolysis agent by weight.

5. The PETG multifunctional injection molding improving agent masterbatch according to claim 1, characterized in that: The raw materials also include, by weight: 1 to 3 parts of an ester exchange inhibitor, 0.5 to 3 parts of boehmite, 0.3 to 1 part of hydrotalcite, 0.05 to 1 part of BASF ultramarine violet, and 0.5 to 3 parts of an anti-hydrolysis agent.

6. The method for preparing the PETG multifunctional injection molding improving agent masterbatch according to claim 5, characterized in that: The following steps are involved: Dry and grind the PETG carrier into powder; Place half of the mass of PETG carrier powder, inorganic nucleating agent, low molecular weight nucleating agent, coupling agent, catalyst, crystallization accelerator, antioxidant, BASF ultramarine, and the remaining PETG carrier powder into a stirring device in sequence and stir evenly; The stirred material is placed in a low-speed cooling stirring pot, and the ester exchange inhibitor and anti-hydrolysis agent are poured in sequence while stirring until the initial material is obtained; Mix boehmite and hydrotalcite evenly; Mix the internal lubricant and the external lubricant evenly; The initial material is placed in the hopper of the granulator for granulation. The granulator is divided into three temperature zones in sequence. The granulation temperature of the first temperature zone is 280-320 degrees Celsius, the granulation temperature of the second temperature zone is 270-250 degrees Celsius, and the granulation temperature of the third temperature zone is 260-240 degrees Celsius; During the granulation process, the boehmite and hydrotalcite are mixed and added to the granulator from the first temperature zone; During the granulation process, the internal lubricant and the external lubricant are mixed and added into the granulator from the second temperature zone.

7. The method for preparing the PETG multifunctional injection molding improving agent masterbatch according to claim 6, characterized in that: Before the step of "mixing the boehmite and the hydrotalcite and adding them to the granulator from the first temperature zone", the boehmite and the hydrotalcite are mixed, vacuumized, and then added to the granulator by side feeding; Before "mixing the internal lubricant and the external lubricant and then injecting them into the granulator", the internal lubricant and the external lubricant are mixed and completely melted into liquid in a pre-melting tank, and then forcibly injected into the granulator by a liquid plunger pump.

8. The method for preparing a PETG multifunctional injection molding improving agent masterbatch according to claim 6 or 7, characterized in that: The granulator includes fifteen zones of uniform length in sequence, the first to sixth zones are the first temperature zones, the seventh to tenth zones are the second temperature zones, and the eleventh to fifteenth zones are the third temperature zones; the total time from the initial material entering the granulator to the material being discharged is 14 to 16 seconds; Put the initial material into the hopper of the granulator for granulation The boehmite and hydrotalcite are mixed and added to the granulator from the third zone; The internal lubricant and the external lubricant are mixed and added into the granulator from the seventh zone.

9. The method for preparing the PETG multifunctional injection molding improving agent masterbatch according to claim 6, characterized in that: In the step of "drying and grinding the PETG carrier into powder", the PETG carrier is dried to a moisture content of no more than 50 PPM; the particle size of the ground PETG carrier is 90-110 mesh; The material temperature during the stirring of "sequentially placing half of the mass of the PETG carrier powder, the coupling agent, the catalyst, the crystallization accelerator, the antioxidant, the BASF ultramarine, and the remaining PETG carrier powder into a stirring device and stirring evenly" does not exceed 70 degrees Celsius; In the step of "placing the stirred material into a low-speed cooling stirring pot, and pouring in the ester exchange inhibitor and the anti-hydrolysis agent in sequence while stirring until the material is evenly stirred", the cooling water temperature does not exceed 20 degrees Celsius.

10. A plastic material, characterized in that: The raw material comprises the PETG multifunctional injection molding improver masterbatch described in any one of claims 1-5, or the masterbatch prepared by the PETG multifunctional injection molding improver masterbatch preparation method described in any one of claims 6-9.

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