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Film masterbatch with micro-foaming and coloring composite function and preparation method thereof

A composite function and micro-foaming technology, which is applied in the field of polymer material processing and modification, can solve problems such as film holes, odor surface, difficult foaming, etc., to improve melt viscosity, tear strength, and pigment dispersion performance effect

Inactive Publication Date: 2018-05-04
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the small thickness of the film material (generally less than 100um), it is difficult to foam it with ordinary physical foaming agents or chemical foaming agents, because once bubbles are generated, it is easy to cause holes in the film, produce odor or surface Bad and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weighing and batching according to the following formula: 14 parts of low-density polyethylene, 5 parts of α-methylstyrene cyclodimer, 75 parts of titanium dioxide, 3 parts of SEBS, 1 part of zinc stearate and 2 parts of polyethylene wax.

[0035] The above components are premixed uniformly with a mixer, and then extruded and granulated with a twin-screw extruder to obtain a film masterbatch with micro-foaming and coloring composite functions. The temperature of the extruder is set at 160°C, 180°C, 180°C, 180°C, host speed 400rpm.

[0036] The film masterbatch prepared above with micro-foaming and coloring composite functions and linear low-density polyethylene (LLDPE 7042) and low-density polyethylene (LDPE 1F7B) are blown at a ratio of 20:70:10, and the blown film temperature is 160°C .

Embodiment 2

[0038] Weighing and batching according to the following formula: 20 parts of low-density polyethylene, 5 parts of α-methylstyrene cyclodimer, 65 parts of titanium dioxide, 3 parts of SEBS, 5 parts of talcum powder, 0.2 parts of zinc stearate and polystyrene Vinyl wax 1.8 parts.

[0039] The above components are pre-mixed uniformly with a mixer, then melt-blended at 170°C with a twin-rotor continuous mixing equipment, and then granulated with a single-screw extruder to obtain a film masterbatch with micro-foaming and coloring composite functions , The temperature of the extruder is set to 160°C, 160°C, 160°C, 160°C, and the speed of the main engine is 300rpm.

[0040] The film masterbatch prepared above with micro-foaming and coloring composite functions and linear low-density polyethylene (LLDPE 7042) and low-density polyethylene (LDPE 1F7B) are blown at a ratio of 20:70:10, and the blown film temperature is 160°C .

Embodiment 3

[0042] Weighing and batching according to the following formula: 25 parts of low-density polyethylene, 10 parts of α-methylstyrene cyclodimer, 40 parts of carbon black, 2 parts of SEBS, 2 parts of SEPS, 10 parts of calcium carbonate, zinc stearate 2 parts and 8 parts of oxidized polyethylene wax.

[0043] The above components are pre-mixed uniformly with a mixer, then melt-blended at 180°C with an internal mixer, and then granulated with a single-screw extruder to obtain a film masterbatch with micro-foaming and coloring composite functions, extruded The machine temperature is set to 160°C, 180°C, 180°C, 180°C, and the host speed is 200rpm.

[0044] The above-mentioned film masterbatch with micro-foaming and coloring composite functions prepared above is blown with linear low-density polyethylene (LLDPE 7042) and low-density polyethylene (LDPE 1F7B) at a ratio of 5:70:25, and the blown film temperature is 160°C .

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PUM

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Abstract

The invention discloses a film masterbatch with a micro-foaming and coloring composite function and a preparation method thereof, and belongs to the technical field of processing and modification of high molecular materials. The film masterbatch comprises the following components in parts by weight: 14-60 parts of polyolefin, 5-10 parts of a micro-foaming agent, 0.5-75 parts of a coloring agent, 1-5 parts of a tackifier, 0-10 parts of a processing aid and 0-70 parts of a filler. A low-melting point alpha-methylstyrene ring dimer is used for preparing the film masterbatch, so that a film is kept in a liquid state in the stretching process during preparation and fine holes are formed by stretching so as to achieve a micro-foaming effect and reduce the density of the film; moreover, through the addition of the tackifier, the melt viscosity of the film masterbatch is improved, so that in the preparation process of the masterbatch, a shearing force can be increased, the dispersion performance of a pigment can be improved, and the tear strength of the film is improved.

Description

technical field [0001] The invention belongs to the technical field of processing and modification of polymer materials, and particularly relates to a film masterbatch with composite functions of microfoaming and coloring and a preparation method thereof. The film masterbatch has composite functions of microfoaming and coloring. Background technique [0002] Plastic foaming technology is a processing technology that uses physics or a foaming agent to generate gas and disperse it in the plastic matrix in the form of fine pores. The use of foaming technology can reduce material density, reduce material consumption, save costs, and can obtain additional functions of shock absorption, sound absorption, heat insulation and softening. It is one of the indispensable processing methods in the field of modern plastic processing. [0003] At present, with the popularity of e-commerce and online shopping, the express delivery industry is developing rapidly. The express packaging indust...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L53/02C08J9/14C08J5/18C08J3/22
Inventor 阳范文黎泽顺卢俊文雷周桥刘鹏
Owner 广东波斯科技股份有限公司
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