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Production method of HDPE regenerated modified material

A production method and modified material technology, applied in the production field of HDPE recycled modified materials, can solve the problems of poor plasticity, many impurities, unstable quality indicators, etc., and achieve the effect of stable product quality and cost saving.

Inactive Publication Date: 2017-06-13
陕西榆林协创资源再生有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present in this patented method uses high density polyethylene (HDPE) or another type of polymer called ethyleneglycol dimystroic acid copolymers(EDC). This material has several advantages over traditional resin systems like good strength at very thin wall thickness, resistance against chemical agents used during manufacturing processes, easy processing properties, flexibility, durability, etc., making it ideal for use in various applications where lightweight pipe needs to be produced due to their superior performance compared to older methods.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the properties of modified polyethylene terephthalate (PET) material used for making various items such as containers or packaging materials due to its lack of stability during storage over time caused by factors like degradation from environmental stressors that can cause changes made through these modifications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: According to the mass ratio, select 8% of HDPE large barrel material, 15% of HDPE medium barrel material, 20% of HDPE hollow material, 35% of HDPE small hollow material, 5% of LLDPE material, 0.6-% of color masterbatch, toughening modifier 2%;

[0025] Step 2, the above-mentioned raw materials are uniformly stirred with a stirring bucket, and stirred for 40 min to obtain mixture A;

[0026] In step 3, the compound A is placed in the extruder for one-time melting and extrusion. The temperature is 210°C, and the temperature of the discharge die is 200°C;

[0027] In step 4, the material extruded by the extruder is filtered through an 80-mesh mesh sheet to filter the extruded material in one stage. The first-stage filtration adopts a double-layer 201 stainless steel mesh sheet with a mesh number of 80 meshes, a thickness of 1.2mm and 0.6mm, and an additional seal. Frame, double-layer co-extrusion;

[0028] In step 5, the extruded material after the first-stage f...

Embodiment 2

[0033] Step 1: According to the mass ratio, select HDPE large barrel material 12%, HDPE medium barrel material 18%, HDPE hollow material 23%, HDPE small hollow material 40%, LLDPE material 8%, color masterbatch 0.8%, toughening modifier 3 %;

[0034] Step 2, the above-mentioned raw materials are uniformly stirred with a stirring bucket, and stirred for 60 min to obtain mixture A;

[0035] In step 3, the compound A is placed in the extruder and extruded after being melted once. The temperature is 220°C, and the temperature of the discharge die is 210°C;

[0036] In step 4, the material extruded by the extruder is filtered through an 80-mesh mesh sheet to filter the extruded material in one stage. The first-stage filtration adopts a double-layer 201 stainless steel mesh sheet with a mesh number of 80 meshes, a thickness of 1.2mm and 0.6mm, and an additional seal. Frame, double-layer co-extrusion;

[0037] In step 5, the extruded material after the first-stage filtration is pl...

Embodiment 3

[0042] Step 1: According to the mass ratio, select HDPE large barrel material 10%, HDPE medium barrel material 17%, HDPE hollow material 21%, HDPE small hollow material 38%, LLDPE material 6%, color masterbatch 0.7%, toughening modifier 3 %;

[0043] Step 2, the above-mentioned raw materials are uniformly stirred with a stirring bucket, and stirred for 50 min to obtain mixture A;

[0044] In step 3, the compound A is placed in the extruder and extruded after being melted once. The temperature is 215°C, and the temperature of the discharge die is 205°C;

[0045] In step 4, the material extruded by the extruder is filtered through an 80-mesh mesh sheet to filter the extruded material in one stage, and the second-stage filtration adopts a double-layer 201 stainless steel mesh sheet with a mesh number of 100 mesh, a thickness of 1.2 mm and 0.6 mm, and an additional seal. Frame, double-layer co-extrusion;

[0046] In step 5, the extruded material after the first-stage filtration...

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Abstract

The invention discloses a production method of an HDPE regenerated modified material. The following raw materials are adopted: 8-12% of an HDPE large barrel material, 15-18% of an HDPE medium barrel material, 20-23% of an HDPE hollow material, 35-40% of HDPE small and medium hollow materials, 5-8% of an LLDPE material, 0.6-0.8% of color master batches and 2-3% of a toughening modifying agent. The production method comprises the following steps: carrying out primary fusion on the prepared raw materials, then extruding, carrying out one-stage filtration, then carrying out secondary fusion, then extruding, carrying out two-stage filtration, finally carrying out grain-sized dicing, carrying out spin-drying, homogenizing, and then packaging. The production method disclosed by the invention has the advantages that quality problems that existing product quality indexes are unstable, the modulus is low, the plasticity is poor, the oxidation induction time is short and impurities are many are solved, and product enterprise standards are formed; and the product can meet production requirements of HDPE double-wall corrugated pipes with different loop stiffness grades such as SN8, SN10 and SN12.5, the product quality is stable, national standards can be met, quality indexes are close to a domestic PE80-grade fresh material when the product serves as a drainage pipeline, and great cost is saved for downstream enterprises.

Description

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Claims

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Application Information

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Owner 陕西榆林协创资源再生有限公司
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