Functional master batch for demolding and preparation method thereof

Abstract

The invention discloses a functional master batch for demolding and a preparation method thereof. The functional master batch is characterized by comprising the following components in percentage by weight: 64-70% of nylon 6, 1-3% of stearic acid, 0.2-0.5% of an antioxidant, 2-5% of a nucleating agent, 1-3% of a toughening agent, 8-12% of calcium stearate, 6-10% of ethylene bis stearamide, 1-1.5% of white oil and 1-3% of a whitening agent. The mold release agent has the effects of improving the mold release property of a plastic product and being good in mold release capacity.

Description

Technical Field

[0001] The invention relates to a masterbatch, and more particularly to a functional masterbatch for demoulding and a preparation method thereof. Background Art

[0002] Masterbatch is a material used in plastic processing. It is made by mixing and kneading various additives and fillers with a small amount of carrier resin. The main function of the masterbatch is to reduce the amount of plastic additives added, simplify the operating procedures, and improve production efficiency during the production of plastic products. A certain amount of masterbatch needs to be added when making plastic products. However, some masterbatches currently have poor demoulding properties, which results in poor demoulding properties of plastic products. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a functional masterbatch for demoulding and a preparation method thereof to solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 500-600 rpm and stir for 10-15 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 500-600 rpm for 25-30 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at a speed of 500-600 rpm for 10-15 minutes.

[0005] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 200℃-210℃, zone 2 260℃-270℃, zone 3 260℃-270℃, zone 4 265℃-275℃, zone 5 230℃-240℃, zone 6 220℃-230℃, zone 7 220℃-230℃, zone 8 230℃-240℃, zone 9 230℃-240℃, zone 10 200℃-210℃, die head 230℃-240℃; Step 5: Control the extruder speed at 400-600 rpm, the feeding speed at 43-48 rpm; control the current at 90A-100A for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 70°C-85°C and a homogenization time of 15-30 minutes.

[0006] The present invention is further configured as follows: the antioxidant is antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis (4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0007] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: nylon 6: 64-70%, stearic acid 1-3%, antioxidant 0.2-0.5%, nucleating agent 2%-5%, toughening agent 1-3%, calcium stearate 8-12%, vinyl bisstearamide 6-10%, white oil 1%-1.5%, brightener 1%-3%.

[0008] In summary, antioxidants slow down the oxidation reaction of plastic particles caused by oxygen, heat, light and other factors, thereby extending the service life of the material; nucleating agents can accelerate the crystallization rate of plastic particles, increase the nucleation density, and make the grain size fine and evenly distributed, thereby shortening the molding cycle and improving the processing performance of the product; toughening agents can enhance the impact resistance and toughness of plastic particles, thereby improving the overall performance of plastic particles; vinyl bisstearamide can play a role in lubrication, demolding, anti-adhesion, anti-static and promoting pigment dispersion. Vinyl bisstearamide has excellent lubrication properties and can significantly improve the fluidity and demolding properties of plastics, thereby reducing energy consumption and increasing the output of plastic processing; calcium stearate has good demolding properties, so it can play a good demolding role, thereby assisting downstream manufacturers in improving the demolding properties of plastic products. DETAILED DESCRIPTION

[0009] The invention discloses a functional masterbatch for demoulding and a preparation method thereof, which has the effects of improving the demoulding property of plastic products and having good demoulding ability. Embodiment 1

[0010] A method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 500 rpm for 15 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 550 rpm for 28 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at 600 rpm for 10 minutes.

[0011] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 200°C, zone 2 260°C, zone 3 263°C, zone 4 265°C, zone 5 230°C, zone 6 220°C, zone 7 230°C, zone 8 230°C, zone 9 233°C, zone 10 200°C, and die head 233°C; Step 5: Control the extruder speed at 400 rpm and the feeding speed at 45 rpm; control the current at 90 amps for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 70°C for 30 minutes.

[0012] The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0013] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: nylon 6: 66%, stearic acid 3%, antioxidant 0.5%, nucleating agent 2%, toughening agent 3%, calcium stearate 12%, vinyl bisstearamide 10%, white oil 1%, and brightener 2.5%. Embodiment 2

[0014] A method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 550 rpm for 15 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 550 rpm for 25 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at 580 rpm for 8 minutes.

[0015] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 203°C, zone 2 262°C, zone 3 260°C, zone 4 267°C, zone 5 232°C, zone 6 225°C, zone 7 224°C, zone 8 235°C, zone 9 235°C, zone 10 203°C, and die head 235°C; Step 5: Control the extruder speed at 450 rpm and the feed speed at 46 rpm; control the current at 93 amps for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 75°C for 25 minutes.

[0016] The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0017] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: nylon 6: 68%, stearic acid 3%, antioxidant 0.5%, nucleating agent 5%, toughening agent 3%, calcium stearate 8%, vinyl bisstearamide 8%, white oil 1.5%, brightener 3%. Embodiment 3

[0018] A method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 540 rpm for 15 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 560 rpm for 20 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at 590 rpm for 12 minutes.

[0019] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 205°C, zone 2 263°C, zone 3 260°C, zone 4 265°C, zone 5 238°C, zone 6 224°C, zone 7 228°C, zone 8 233°C, zone 9 235°C, zone 10 205°C, and die head 230°C; Step 5: Control the extruder speed at 420 rpm and the feed speed at 43 rpm; control the current at 95 amps for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 77°C and a homogenization time of 28 minutes.

[0020] The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0021] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: 70% nylon 6, 2% stearic acid, 0.5% antioxidant, 4% nucleating agent, 1% toughening agent, 10% calcium stearate, 8% vinyl bisstearamide, 1.5% white oil, and 3% whitening agent. Embodiment 4

[0022] A method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 580 rpm for 13 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 570 rpm for 12 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at 550 rpm for 18 minutes.

[0023] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 210°C, zone 2 268°C, zone 3 266°C, zone 4 270°C, zone 5 235°C, zone 6 228°C, zone 7 225°C, zone 8 238°C, zone 9 235°C, zone 10 208°C, and die head 238°C; Step 5: Control the extruder speed at 500 rpm and the feeding speed at 48 rpm; control the current at 98A for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 80°C for 25 minutes.

[0024] The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0025] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: nylon 6: 67%, stearic acid 3%, antioxidant 0.5%, nucleating agent 4%, toughening agent 2%, calcium stearate 11%, vinyl bisstearamide 9%, white oil 1.5%, and brightener 2%. Embodiment 5

[0026] A method for preparing a functional masterbatch for demoulding, characterized in that it comprises the following steps: Step 1: Add nylon 6, toughening agent and white oil into a blender at a speed of 560 rpm for 13 minutes; Step 2: Add calcium stearate, antioxidant, and nucleating agent into a blender at a speed of 580 rpm for 12 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener, stir at 570 rpm for 13 minutes.

[0027] Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 207°C, zone 2 264°C, zone 3 267°C, zone 4 271°C, zone 5 232°C, zone 6 229°C, zone 7 227°C, zone 8 2382°C, zone 9 233°C, zone 10 207°C, and die head 234°C; Step 5: Control the extruder speed at 550 rpm and the feed speed at 48 rpm; control the current at 97 amps for pulling and pelletizing; Step 6: During the drawing process, the particles are tested for tensile demoulding quality every hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into a homogenization barrel at a homogenization temperature of 79°C and a homogenization time of 23 minutes.

[0028] The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

[0029] A functional masterbatch for demoulding, characterized in that it is composed of the following components in percentage by weight: nylon 6: 65%, stearic acid 3%, antioxidant 0.5%, nucleating agent 5%, toughening agent 3%, calcium stearate 11%, vinyl bisstearamide 10%, white oil 1.5%, whitening agent 1%.

[0030] The performance tables of each embodiment are as follows: Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Demolding time S 6 6.2 5.8 5.9 6 Molding cycle S 5 4.5 4.8 4.3 4 Tensile strength N 65 68 67 65 70 The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a functional masterbatch for demoulding, characterized in that: The steps include: Step 1: Add nylon 6, toughening agent and white oil to the mixer at a speed of 500-600 rpm and stir for 10-15 minutes; Step 2: Add calcium stearate, antioxidant and nucleating agent to the mixer at a speed of 500-600 rpm and stir for 25-30 minutes; Step 3: Add stearic acid, vinyl bisstearamide and brightener at a speed of 500-600 rpm and stir for 10-15 minutes. Step 4: Add the stirred raw materials to the twin-screw low-torque extruder, and adjust the temperature of the twin-screw low-torque extruder so that the temperature ranges are: zone 1 200℃-210℃, zone 2 260℃-270℃, zone 3 260℃-270℃, zone 4 2 65℃-275℃, zone five 230℃-240℃, zone six 220℃-230℃, zone seven 220℃-230℃, zone eight 230℃-240℃, zone nine 230℃-240℃, zone ten 200℃-210℃, die head 230℃-240℃; Step 5: Control the extruder speed at 400-600 rpm, the feeding speed at 43-48 rpm; the current is controlled at 90A-100A for pulling and pelletizing; Step 6: During the pulling process, the particles are tested for tensile demoulding quality at intervals of one hour to ensure the demoulding performance of the product; Step 7: Pump the prepared plastic particles into the homogenization barrel, the homogenization temperature is 70℃-85℃, and the homogenization time is 15-30 minutes.

2. The method for preparing a functional masterbatch for demoulding according to claim 1, characterized in that: The antioxidants are antioxidant 1010 and antioxidant 168; the nucleating agent is 2,2-methylene bis(4.6-di-tert-butylphenyl) sodium phosphate; the toughening agent is polyolefin thermoplastic elastomer; and the whitening agent is diethylene.

3. A functional masterbatch for demoulding, characterized in that: The invention is composed of the following components in percentage by weight: nylon 6: 64-70%, stearic acid 1-3%, antioxidant 0.2-0.5%, nucleating agent 2%-5%, toughening agent 1-3%, calcium stearate 8-12%, vinyl bisstearamide 6-10%, white oil 1%-1.5%, brightener 1%-3%.