Rotomolding-grade polyethylene filled modified composite material and preparation method thereof

A composite material and polyethylene technology, applied in the field of rotomolding grade materials, can solve the problems of poor antibacterial properties, poor mechanical properties, weak strength, etc., and achieve the effects of enhancing acid and alkali resistance, improving strength, and good bacteriostatic activity.

Inactive Publication Date: 2019-05-07
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor mechanical properties, weak strength, poor acid and alkali resistance, and poor antibacterial properties of the existing LLDPE raw materials for rot

Method used

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  • Rotomolding-grade polyethylene filled modified composite material and preparation method thereof
  • Rotomolding-grade polyethylene filled modified composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of a rotomoulding grade polyethylene filled modified composite material: 72 parts of linear low density polyethylene LLDPE1, 20 parts of glass beads, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.3 part of lubricant EBS -SF, 5 parts of POE-g-MAH, and 3 parts of PE grafted maleic anhydride were put into the low-speed mixer, mixed for 5 minutes, and the speed of the mixer was 20rpm; then the mixed materials were put into the co-rotating twin-screw extruder Extrusion and granulation in the extruder, the parameters of the extruder are: main engine speed 400rpm, main feeding frequency 10Hz, temperature 180-200°C, melt pressure ≤ 10MPa; put the granulated plastic particles into an oven for drying at a temperature of 90 ℃, dry for 2 hours; grind the dried plastic particles in a mill with a 40-mesh sieve, a grinding disc rotation speed of 4000rpm, a milling current of 60A, and a powder outlet temperature of ≤70°C.

Embodiment 2

[0035] Preparation of a modified composite material filled with rotomoulding grade polyethylene: add 66 parts of linear low density polyethylene LLDPE1, 25 parts of glass beads, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, and 0.3 part of lubricant EBS -SF, 6 parts of POE-g-MAH, and 3 parts of PE grafted maleic anhydride were put into the low-speed mixer and mixed for 8 minutes, and the speed of the mixer was 10rpm; then the mixed materials were put into the twin-screw extruder Extrusion granulation, extruder parameters are: host speed 350rpm, main feeding frequency 8Hz, temperature 180-200°C, melt pressure ≤ 10MPa; put the granulated plastic particles into an oven for drying, temperature 90°C, dry 2h; then grind the dried plastic particles in a mill with a 40-mesh sieve, a milling disc rotation speed of 4000rpm, a milling current of 55A, and a powder outlet temperature of ≤70°C.

Embodiment 3

[0037] Preparation of a modified composite material filled with rotomolding grade polyethylene: add 61 parts of linear low density polyethylene LLDPE1, 30 parts of glass beads, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.3 part of lubricant EBS -SF, 5 parts of POE-g-MAH, 4 parts of PE grafted maleic anhydride were put into the low-speed mixer and mixed for 10 minutes, and the speed of the mixer was 20rpm; then the mixed materials were put into the twin-screw extruder Extrusion granulation, extruder parameters: main engine speed 400rpm, main feeding frequency 12Hz, temperature 180-200°C, melt pressure ≤ 10MPa; put the granulated plastic particles into an oven for drying, temperature 90°C, dry 2h; then grind the dried plastic particles in a mill with a 40-mesh sieve, a milling disc rotation speed of 5000rpm, a milling current of 60A, and a powder outlet temperature of ≤70°C.

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Abstract

The invention provides a rotomolding-grade polyethylene filled modified composite material and a preparation method thereof. The rotomolding-grade polyethylene filled modified composite material comprises, by weight, 25 to 90 parts of LLDPE1, 0 to 40 parts of LLDPE2, 10 to 50 parts of an inorganic filling material, 1 to 6 parts of a compatibilizing agent, 0.5 to 10 parts of a toughening agent, 0.1to 1 part of an antioxidant and 0.2 to 0.6 part of a lubricant, wherein the LLDPE1 and the LLDPE2 are two LLDPE materials with different performances; the inorganic filling material contains glass beads; and the compatibilizing agent is PE grafted maleic anhydride. The preparation method comprises the following steps: with linear low-density polyethylene resin as a matrix, filling the linear low-density polyethylene resin with the inorganic filling material, adding POE-g-GMA, POE-g-MAH and the like, and carrying out blending, granulation and grinding so as to prepare a rotomolding material. According to the invention, a rotomolded product prepared from the rotomolding material is improved in strength and has good wear resistance, acid and alkali resistance, geometric stability and antibacterial properties; in addition, the cost of production can be reduced.

Description

technical field [0001] The invention relates to a rotational molding grade material, in particular to a rotational molding grade polyethylene filled modified composite material and a preparation method thereof. Background technique [0002] Rotational molding process is a thermoplastic hollow molding method, that is, first inject powdery or pasty materials into the mold, and through the heating of the mold and the vertical and horizontal rolling rotation, the materials are evenly distributed by their own gravity and centrifugal force. Fill the inner cavity of the mold and melt it, and release the mold after cooling to obtain a hollow product. The rotational molding process began in the 1940s and was widely used in some developed countries such as Europe and the United States in the 1970s. my country realized industrialized production in the 1990s. Although it started relatively late, it developed very rapidly and made some remarkable achievements. [0003] At present, more...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K13/04C08K7/20C08K5/134C08K5/526
Inventor 张亮牧晓春梁聪立卢聪杰吕安桂雷伟伟
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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