Wood-grain-like HDPE co-extrusion foam board and preparation method thereof

A technology of foam board and imitation wood grain, applied in the field of foam materials, can solve the problems of single surface color of foam material, uneven traction and tensile force, influence of natural direction of imitation wood grain, etc., and achieves low cost and good quality. Economical value, high wear resistance effect

Pending Publication Date: 2022-02-15
NINGBO HELONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the polyethylene foam material is easy to foam unevenly, after the foam expands in the mold, the pulling and stretching force is uneven when the exit die is extruded, which makes the surface of the polyethylene foam profile form "orange peel". ", which reduces the quality of the foamed board. In addition, the surface color of the foamed material is single. If a variety of color masterbatches are used to create a surface imitation wood grain, it is easy to cause the natural imitation wood grain on the surface of the final board due to the formation of "orange peel". The direction is affected, which is not conducive to the beauty of the foamed sheet

Method used

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  • Wood-grain-like HDPE co-extrusion foam board and preparation method thereof
  • Wood-grain-like HDPE co-extrusion foam board and preparation method thereof
  • Wood-grain-like HDPE co-extrusion foam board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of imitation wood grain HDPE co-extruded foam board, its raw materials and dosage are shown in Table 1, refer to figure 1 , its preparation method comprises the following steps:

[0051] Step 1) material preparation:

[0052] Core layer mixture: mix the high-density polyethylene, melt reinforcing agent, core layer filler, crosslinking agent and core layer coloring agent in the foam layer raw material according to the proportioning in Table 1 to obtain the core layer mixture, spare;

[0053] Surface layer compound: mix HDPE, vinyl copolymer, surface filler, compatibilizer, and polyethylene-based elastomer according to the ratio in Table 1, and then melt and plasticize it at 200°C through a granulator and granulate it to obtain The functional particles of the surface co-extrusion layer with a diameter of 2-3 mm are weighed according to the proportion and divided into two equal parts, and then mixed with the same amount of different color surface layer masterbatch...

Embodiment 2

[0061] A kind of imitation wood grain HDPE co-extruded foam board, its raw materials and dosage are shown in Table 1, refer to figure 1 , its preparation method comprises the following steps:

[0062] Step 1) material preparation:

[0063] Core layer mixture: mix the high-density polyethylene, melt reinforcing agent, core layer filler, crosslinking agent, dispersant and core layer coloring agent in the foam layer raw materials according to the ratio in Table 1 to obtain the core layer mix, spare;

[0064] Surface layer compound: mix HDPE, vinyl copolymer, surface filler, compatibilizer, and polyethylene-based elastomer according to the ratio in Table 1, and then melt and plasticize it at 160°C through a granulator and granulate it to obtain The functional particles of the surface co-extrusion layer with a diameter of 2-3 mm are weighed according to the proportion and divided into two equal parts, and then mixed with the same amount of different color surface layer masterbatc...

Embodiment 3

[0072] A kind of imitation wood grain HDPE co-extruded foam board, its raw materials and dosage are shown in Table 1, refer to figure 1 Its preparation method comprises the following steps:

[0073] Step 1) material preparation:

[0074] Core layer mixture: mix the high-density polyethylene, melt reinforcing agent, core layer filler, crosslinking agent, dispersant and core layer coloring agent in the foam layer raw materials according to the ratio in Table 1 to obtain the core layer mix, spare;

[0075] Surface layer compound: mix HDPE, vinyl copolymer, surface filler, compatibilizer and polyethylene-based elastomer uniformly according to the ratio in Table 1, and then melt and plasticize it at 180°C through a granulator and granulate it to obtain For surface co-extrusion layer functional particles with a diameter of 2-3mm, weigh the surface co-extrusion layer functional particles and anti-ultraviolet masterbatch according to the ratio and divide them into two equal parts, a...

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Abstract

The invention relates to a wood-grain-like HDPE co-extrusion foam board and a preparation process thereof, and belongs to the field of foam boards. The wood-grain-like HDPE co-extrusion foam board comprises a foaming core layer and a surface co-extrusion layer, wherein the foaming core layer is prepared from the following raw materials: high-density polyethylene, a melt reinforcing agent, a core layer filling agent, a foaming agent, a foaming activating agent and a cross-linking agent; and the surface co-extrusion layer is prepared from the following raw materials: HDPE, a vinyl copolymer, a polyvinyl elastomer, a surface filler and surface color master batches with two colors. The preparation method comprises the following steps of: preparing materials; melting, foaming, cooling and pre-shaping a core layer mixture to obtain a foamed core layer; mixing and extruding two molten surface co-extrusion materials with different colors, and coating the surface of a foaming core layer base body to form a wood-grain-like surface co-extrusion layer; and cooling and shaping the wood-grain-like surface co-extrusion layer. The wood-grain-like HDPE co-extrusion foam board is good in heat preservation and sound insulation effect, has better wear resistance and surface hardness compared with a traditional foam board, is more economical in manufacturing cost and has a wider application value.

Description

technical field [0001] The invention relates to the field of foam materials, in particular to a wood-like HDPE co-extruded foam board and a preparation method thereof. Background technique [0002] Polyethylene foam material is a building material made of polypropylene resin as the main body, with foaming agent, crosslinking agent and other additives. Due to its low density, chemical corrosion resistance, good heat insulation and low water absorption , low cost and other advantages, so that it is widely used in filling materials, sound insulation materials, construction industry materials and lightweight materials and other fields. [0003] However, because the polyethylene foam material is easy to foam unevenly, after the foam expands in the mold, the pulling and stretching force is uneven when the exit die is extruded, which makes the surface of the polyethylene foam profile form "orange peel". ", which reduces the quality of the foamed board. In addition, the surface col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/00B29C48/07B29C48/18B29C48/305B29C48/88C08J9/08C08J9/10C08L23/06C08L23/08C08L27/18B29L7/00
CPCB29C48/0012B29C48/18B29C48/07B29C48/305B29C48/911C08J9/103C08J9/08C08J9/0061C08L23/06C08J2203/04C08J2203/02C08J2323/06C08J2427/18C08J2423/06C08L2207/062B29L2007/002C08L23/0869
Inventor 周云马庆江周全张冰冯卓
Owner NINGBO HELONG NEW MATERIAL
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