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Carbon black master batch with low melting point and high melt flow rate and preparation method

A technology of flow rate and carbon black masterbatch, which is applied in the field of carbon black masterbatch and preparation, can solve the problems of limiting low-cost carbon black masterbatch, shortage of EVA resin supply, difficulty in procurement, etc., and achieves good dispersion, low cost, The effect of simple preparation process

Active Publication Date: 2022-05-13
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the lack of supply and difficulty in procurement of powdered LDPE and EVA resins with high melt flow rates, the supply of low-cost, low-melting point, high-melt flow rate carbon black masterbatches in the market is limited.
[0009] In summary, at present, in the preparation process of carbon black masterbatches with low melting point and high fluidity, especially low-cost, low-melting point, high-fluidity carbon black masterbatches with a wide range of raw materials, the products prepared by the prior art have certain advantages. limitations

Method used

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  • Carbon black master batch with low melting point and high melt flow rate and preparation method
  • Carbon black master batch with low melting point and high melt flow rate and preparation method
  • Carbon black master batch with low melting point and high melt flow rate and preparation method

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Effect test

Embodiment 1

[0034] Raw material formula (mass ratio, parts): LLDPE resin (load 2160g, temperature MFR=30g / 10min at 190°C) 10, LLDPE resin (load 2160g, temperature 190°C when MFR=50g / 10min) 20, liquid paraffin oil (100 The kinematic viscosity at ℃ is 15mm 2 / s) 30, carbon black (primary particle size 20nm, specific surface area 70m 2 / g, oil absorption value 60mL / 100g, coloring strength 120, pH value 7) 40, antioxidant B215 0.01, potassium carbonate 0.05.

[0035] Preparation process: 1. Mixing of liquid paraffin oil and additives: add liquid paraffin oil, functional additives, and antioxidants into a storage tank with stirring blades according to the formula ratio at room temperature to form a stable dispersion for later use. 2. Twin-screw extruder prepares LLDPE / paraffin oil mixture: liquid paraffin oil is mixed with LLDPE resin in proportion through the twin-screw extruder through a metering pump, and LLDPE powdery resin is added into the hopper with a weight-loss automatic weighing sc...

Embodiment 2

[0038] Raw material formula (mass ratio, parts): LLDPE resin (load 2160g, temperature MFR=50g / 10min at 190°C) 20, LLDPE resin (load 2160g, temperature 190°C when MFR=10g / 10min) 5 liquid paraffin oil (100°C The kinematic viscosity under the condition is 25mm 2 / s) 35, carbon black (primary particle diameter 25nm, specific surface area 60m 2 / g, oil absorption value 50mL / 100g, coloring strength 120, pH value 7.5) 40, antioxidant B225 0.008, sodium carbonate 0.1.

[0039] Preparation process: 1. Mixing of liquid paraffin oil and additives: add liquid paraffin oil, functional additives, and antioxidants into a storage tank with stirring blades according to the formula ratio at room temperature to form a stable dispersion for later use. 2. Twin-screw extruder prepares LLDPE / paraffin oil mixture: liquid paraffin oil is mixed with LLDPE resin in proportion through the twin-screw extruder through a metering pump, and LLDPE powdery resin is added into the hopper with a weight-loss aut...

Embodiment 3

[0042] Raw material formula (mass ratio, parts): LLDPE resin (load 2160g, MFR=48g / 10min at 190°C) 20, liquid paraffin oil (kinematic viscosity at 100°C is 20mm 2 / s) 40, carbon black (primary particle size 25nm, specific surface area 50m 2 / g, oil absorption value 55mL / 100g, coloring strength 125, pH value 9) 40, antioxidant B215 0.01, sodium bicarbonate 0.08.

[0043] Preparation process: 1. Mixing of liquid paraffin oil and additives: add liquid paraffin oil, functional additives, and antioxidants into a storage tank with stirring blades according to the formula ratio at room temperature to form a stable dispersion for later use. 2. Twin-screw extruder prepares LLDPE / paraffin oil mixture: liquid paraffin oil is mixed with LLDPE resin in proportion through the twin-screw extruder through a metering pump, and LLDPE powdery resin is added into the hopper with a weight-loss automatic weighing scale. The temperature of the screw extruder is controlled at 110-150°C. 3. Preparati...

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Abstract

When the mass content of carbon black in the color master batch reaches up to 40-50%, the mass melt flow rate (load of 10.0 kg and test temperature of 190 DEG C) is greater than 50g / 10min, and can reach 800g / 10min to the maximum, and the color master batch can be easily mixed and dispersed with polyethylene and polypropylene resin in the melting processing process, so that the color master batch has the advantages of low melting point, high melt flow rate and the like. Especially, at a relatively low temperature (110 DEG C), the low-melting-point polyolefin resin, such as LDPE, EVA, POE and the like, is mixed to meet the processing requirements of the low-melting-point polyolefin resin. The carbon black master batch with the low melting point and the high melt flow rate is prepared from the following raw materials in parts by mass: 15-30 parts of polyethylene resin, 30-40 parts of liquid paraffin oil, 40-50 parts of carbon black, 0.05-0.1 part of a functional additive and less than or equal to 0.01 part of an antioxidant.

Description

technical field [0001] The invention relates to a carbon black masterbatch and a preparation method, more specifically to a low melting point high melt flow rate carbon black masterbatch and a preparation method. Background technique [0002] Polyethylene is a semi-crystalline thermoplastic resin prepared by polymerization of ethylene as a monomer. It has certain rigidity, flexibility, odorless, non-toxic, good chemical stability, low water absorption and excellent electrical insulation. Polyethylene has many different classification methods according to the difference in polymerization method, molecular weight, chain structure and performance. At present, the more commonly used classification method is to classify according to the density of polyethylene resin, mainly including: high-density polyethylene (HDPE) , Medium Density Polyethylene (MDPE), Low Density Polyethylene (LDPE) and Linear Low Density Polyethylene (LLDPE). HDPE is the species with the highest density amon...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L91/06C08K3/04C08J3/22C08L23/06C08L23/12
CPCC08J3/226C08J2423/08C08J2491/06C08K3/04C08J2323/06C08J2323/08C08J2323/12
Inventor 张军柴瑞丹贾宇陈婷婷毛泽鹏杨念新杨气鹏高玉巧杨正花宋金萍林正伟
Owner NANJING UNIV OF TECH
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