Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of black polyethylene antiseptic glue for unground steel pipeline

A polyethylene and anti-corrosion adhesive technology, applied in adhesives, coatings, etc., to reduce production costs and simplify the coating process

Inactive Publication Date: 2006-11-22
王成人
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a preparation method of black polyethylene anticorrosion adhesive for buried steel pipelines. The technical problem to be solved is: laminating the middle polyethylene adhesive layer and the outer black polyethylene anticorrosion material into one , forming a new material with both bonding and anti-corrosion functions, thus simplifying the complex three-layer structure anti-corrosion process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] HDPE (m 1 =1~30): 60 parts, m 1 is the melt index

[0023] Linear structure ethylene-high carbon-α-olefin: 17.5 parts

[0024] Antioxidant: 0.1 parts

[0025] Light stabilizer: 0.1 parts

[0026] Carbon black: 2.0 parts

[0027] Silane coupling agent: 0.2 parts

[0028] Acrylic: 1 part

[0029] Benzoyl peroxide: 0.1 to 0.4 parts

[0030] Said parts are all parts by weight.

[0031] Ingredients according to the above formula, mixed, stirred evenly in the mixer, and then extruded through the reaction extruder, the extrusion temperature of the extruder is: 170°C, and the outlet temperature of the head is 195°C.

Embodiment 2

[0033] HDPE (m 1 =1~30): 70 copies

[0034] Linear structure ethylene-high carbon-α-olefin: 28 parts

[0035] Antioxidant: 0.3 parts

[0036] Light stabilizer: 0.3 parts

[0037] Carbon black: 2.5 parts

[0038] Silane coupling agent: 0.3 parts

[0039] Maleic anhydride: 1.5 parts

[0040] Dicumyl peroxide: 0.3 parts

[0041] Said parts are all parts by weight.

[0042] Ingredients according to the above formula, mixed, stirred evenly in a mixer, and then extruded through a reaction extruder, the extrusion temperature of the extruder is: 195°C, and the outlet temperature of the head is 195°C.

Embodiment 3

[0044] HDPE (m 1 =1~30): 80 copies

[0045] Linear structure ethylene-high carbon-α-olefin: 37.5 parts

[0046] Antioxidant: 0.5 parts

[0047] Light stabilizer: 0.5 parts

[0048] Carbon black: 3.0 parts

[0049] Silane coupling agent: 0.4 parts

[0050] Silane coupling agent: 0.4 parts

[0051] Maleic acid: 2 parts

[0052] Said parts are all parts by weight.

[0053] Ingredients according to the above formula, mixed, stirred evenly in the mixer, and then extruded through the reaction extruder, the extrusion temperature of the extruder is: 220°C, and the outlet temperature of the head is 195°C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
peel strengthaaaaaaaaaa
peel strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparing method of buried steel pipe black polyethylene preserved glue, which comprises the following steps: blending high-density polyethylene, linear structure ethane- high-carbon-alpha-olefin, anti-oxidant, light stabilizer, carbon black, silane coupler, polar monomer and hyperoxide; stirring in the stirrer evenly; squeezing out through extrusion machine at 170-220 deg.c for extrusion machine and 195 deg.c for head outlet; making the stripping degree more than 150 N per cm under 20 deg.c and 100 N per cm under 50 deg.c. The invention reduces middle layer adhesive, which simplifies the constructing technology.

Description

technical field [0001] The invention relates to a preparation method of an external anticorrosion material for buried steel pipelines. Specifically, it relates to a preparation method of black polyethylene anticorrosion glue for buried steel pipelines. The buried steel pipelines include oil and gas pipelines, petroleum pipelines, gas pipelines, tap water pipelines and the like. Background technique [0002] Since the 1980s, there has been an anticorrosion process for buried steel pipelines with a three-layer structure in the world. The so-called three-layer structure means that the first layer (innermost layer) is sintered powder; the second layer (middle layer) is copolymer adhesive, which is further divided into polyethylene adhesive and polypropylene adhesive; the third layer (outermost layer) It is an external anti-corrosion material, and the black external anti-corrosion material is divided into two types: polyethylene external anti-corrosion material and polypropylen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/06C09J123/08C23F11/00F16L58/10
Inventor 王成人
Owner 王成人