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Masterbatch special for buried polyethylene drainage pipeline

A technology for drainage pipes and polyethylene, applied in the field of chemical products, can solve problems such as difficulty in adapting to the needs of rapid urban development, and achieve the effects of reducing production costs, improving impact performance, and ensuring ring stiffness.

Inactive Publication Date: 2012-11-28
WUHAN QINGYUAN PIPE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to some inherent characteristics of traditional drainage pipes, it has been difficult to meet the needs of rapid urban development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix 50 kg of calcium carbonate inorganic powder with a particle size of 800 mesh and 50 kg of wollastonite inorganic powder with a particle size of 1250 mesh to form a 100 kg composite inorganic powder.

[0031] Preheat the materials, add 0.5 kg of vinyl triethoxy silane and 0.5 kg of isopropyl distearoyloxy aluminate coupling agent to the composite inorganic powder, and stir at low speed at 120~140℃ 5min.

[0032] Then add 0.5kg ethylene bis-stearamide, 5kg paraffin, 1kg white oil, 1kg isocyanate propyltriethoxysilane, 0.5kg EDMA (ethylene bismethacrylate), 0.01kg BPO (benzyl peroxide) Acyl), 0.005kg tris(3,5-di-tert-butyl-4-hydroxybenzyl)-triisocyanate, 7kg high-density polyethylene (its melt index is 3g / 10min (190℃ / 2.16kg)), 2kg low Density polyethylene (its melt index is 6g / 10min (190℃ / 2.16kg)), high-speed mixing is carried out in a high-mixing pot for 20min. The mixed material is blended, extruded and pelletized by a parallel twin-screw extruder at a temperature of 16...

Embodiment 2

[0034] Mix 40 kg of glass microbead inorganic powder with a particle size of 1250 mesh and 60 kg of talc inorganic powder with a particle size of 800 mesh to form a 100 kg composite inorganic powder.

[0035] Preheat the materials, add 0.5 kg of vinyl trimethoxyethoxy silane and 0.75 kg of isopropyl triisostearyl phthalate to the composite inorganic powder, and stir at low speed for 5 min at 120-140°C.

[0036] Then add 0.5kg calcium stearate, 0.5kg zinc stearate, 5kg paraffin, 2kg chlorinated paraffin, 1kg 1,1-bis(tert-butyl peroxy)-3,3,5-trimethylcyclohexane, 0.5kg TAIC (Triallyl isocyanurate), 0.01kg DCP (Dicumyl peroxide), 0.005kg 2,6-tertiary butyl-4-methylphenol, 5kg high density polyethylene ( Its melt index is 3g / 10min (190℃ / 2.16kg)), 5kg low-density polyethylene (its melt index is 6g / 10min (190℃ / 2.16kg)), and high-speed mixing is carried out in a high mixing pot for 20min. . The mixed material is blended, extruded and pelletized by a parallel twin-screw extruder at a tem...

Embodiment 3

[0038] 30 kg of silica inorganic powder with a particle size of 1250 mesh and 70 kg of mica inorganic powder with a particle size of 1250 mesh are mixed to form a 100 kg composite inorganic powder.

[0039] Preheat the materials, add 0.5kg of isopropyl triisostearoyl phthalate, 0.5kg of γ-thiocyanopropyltriethoxysilane coupling agent to the composite inorganic powder, at a temperature of 120~140 Stir at low speed for 5 min at ℃.

[0040] Then add 0.5kg ethylene bis-stearamide, 0.5kg stearamide, 5kg paraffin, 2kg dioctyl phthalate, 1kg 2,5-dimethyl-2,5bis(tert-butylperoxy) Hexane, 0.5kg EDMA (ethylene bismethacrylate), 0.01kg lauroyl peroxide, 0.005kg bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide, 2kg high density polyethylene (Its melt index is 3g / 10min (190℃ / 2.16kg)), 7kg low-density polyethylene (its melt index is 6g / 10min (190℃ / 2.16kg)), high-speed mixing in a high mixing pot for 20 minutes material. The mixed material is blended, extruded and pelletized by a parallel twin-...

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Abstract

The invention discloses a baster-batch special for a buried polyethylene drainage pipeline. The baster-batch is prepared by the following steps of: mixing spheroid inorganic powder and needle flake-shaped inorganic powder according to a certain proportion to form composite inorganic powder; preheating, then adding a coupling agent and uniformly mixing; then adding a lubricant, a plasticizer, active monomer, an initiator, an antioxidant and a polyethylene carrier, highly mixing and discharging; and blending and extruding through double screws and pelletizing. When the filling masterbatch prepared by the invention is used for pipes of small and medium apertures, the weight of every meter of the pipe can be reduced by 5-7 percent. When the masterbatch is used for a large-aperture pipe, the amount of the added masterbatch can reach 40-50 percent; compared with other spheroid inorganic powder masterbatch filled pipelines of the same specification, the modulus can be improved by about 30 percent; and compared with other needle flake-shaped inorganic powder masterbatch filled pipelines of the same specification, the impact property can be improved greatly.

Description

Technical field [0001] The invention relates to chemical products, in particular to a special masterbatch for buried polyethylene drainage pipes. Background technique [0002] In modern society, pipeline transportation is an infrastructure that guarantees the normal production and life of the society and promotes economic prosperity. With the continuous and rapid development of my country's national economy, the construction of municipal drainage pipe network has also received great attention from government departments. Due to its inherent characteristics, traditional drainage pipes have been difficult to adapt to the needs of rapid urban development. As a result, some new plastic pipes, such as high-density polyethylene (HDPE) winding pipes, HDPE double-wall corrugated pipes, etc., are better than traditional cast iron pipes, steel pipes, and cement pipes in terms of performance and ease of construction. Therefore, plastic pipes are gradually replacing traditional pipes and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K7/18C08K7/20C08K7/00C08K3/34C08K3/26C08K3/36C08J3/22C08F255/02
Inventor 甄万清王鹏苏长裕郑敏刘天玺陈燕
Owner WUHAN QINGYUAN PIPE CO LTD
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