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Halogen-free polyvinyl composite for manufacturing pipes and manufacturing method thereof

A polyethylene and composition technology, applied in the preparation of halogen-free polyethylene composition for pipes and its preparation field, can solve the problems of incomplete flame retardant regulations, etc., and achieve excellent mechanical and mechanical properties, excellent antistatic properties, and environmental friendliness Effect

Inactive Publication Date: 2009-07-01
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in China, although the "Administrative Measures for Pollution Control of Electronic Information Products" (China's RoHS) directive has also been implemented, the flame retardant regulations are not very sound, so only some introductions such as CN03138807.8, CN200510104289.4, etc. Vinyl pipe information

Method used

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  • Halogen-free polyvinyl composite for manufacturing pipes and manufacturing method thereof
  • Halogen-free polyvinyl composite for manufacturing pipes and manufacturing method thereof
  • Halogen-free polyvinyl composite for manufacturing pipes and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10 and comparative example 1～2

[0040] This group of examples aims to demonstrate the halogen-free polyethylene composition for preparing pipes and the preparation method thereof according to the present invention. The polyethylene described in the embodiment is high density polyethylene.

[0041] According to the data listed in Table 1, the coated ammonium polyphosphate, melamine and its derivatives, and the halogen-free macromolecular carbon-forming flame retardant CAR were pulverized in a jet mill, and then mixed in a high-speed mixer to obtain a halogen-free expansion type flame retardant. Then the halogen-free intumescent flame retardant, phosphonate flame retardant, antistatic agent, high-density polyethylene, flow modifier, and dispersant obtained above are mixed in proportion, mixed in a high-speed mixer, and extruded to produce Granules, sample preparation by injection molding, test performance, the results are also shown in Table 1.

Embodiment 11～20 and comparative example 3～4

[0043] The polyethylene in this group of examples is a blend of ultra-high molecular weight polyethylene and high-density polyethylene, and the weight ratio of the two blends is 1: (1-5). The matrix viscosity-average molecular weight of ultra-high molecular weight polyethylene is 2 to 3.5 million.

[0044] According to the data listed in Table 2, the coated ammonium polyphosphate, melamine and its derivatives, and the halogen-free macromolecular carbon-forming flame retardant are pulverized in a jet mill, and then mixed in a high-speed mixer to obtain a halogen-free expansion type flame retardant. Then mix the obtained halogen-free intumescent flame retardant, phosphonate flame retardant, antistatic agent, polyethylene, flow modifier, and dispersant in proportion, mix in a high-speed mixer, extrude and granulate, and inject Sample preparation, test performance, the results are also shown in Table 2.

Embodiment 21～30 and comparative example 5～6

[0046] The polyethylene used in this group of examples is a blend of ultra-high molecular weight polyethylene, high-density polyethylene and low-density polyethylene. The weight ratio of the blending of the three is: 1:1-7:0.4-3. The matrix viscosity-average molecular weight of ultra-high molecular weight polyethylene is 4 to 6 million.

[0047] According to the data listed in Table 3, the coated ammonium polyphosphate, melamine and its derivatives, and the halogen-free macromolecular carbon-forming flame retardant are pulverized in a jet mill, and then mixed in a high-speed mixer to obtain a halogen-free expansion type flame retardant. Then mix the obtained halogen-free intumescent flame retardant, phosphonate flame retardant, antistatic agent, polyethylene, flow modifier, and dispersant in proportion, mix in a high-speed mixer, extrude and granulate, and inject Sample preparation, test performance, the results are also shown in Table 3.

[0048]

[0049]

[0050]

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Abstract

The invention relates to a halogen free polyethylene composition for preparing pipes and a preparation method thereof. The composition comprises the following components by weight portion: 11 to 45 portions of halogen free fire retardant, 0.1 to 8 portions of antistatic agent, and 45 to 85 portions of polyethylene,, wherein the halogen free fire retardant is compounded by an expansion type fire retardant and a phosphonate ester fire retardant. The composition is characterized by no halogen content, environmental friendliness and good fire retardation. The composition can reach the V-0 level standards of UL-94 and have excellent antistatic property and good mechanical property. Therefore, the composition is the plastic combined material for preparing the pipes applied to hazardous operations such as coal mine, underground mining, water supply and drainage, gas transmission, and the like.

Description

technical field [0001] The invention relates to the plastic compounding and processing industry in the chemical industry field, in particular to a halogen-free polyethylene composition for preparing pipes and a preparation method thereof. The pipe prepared by the composition is especially suitable for use in dangerous operations such as coal mines, underground, water supply and drainage, and gas transmission. Background technique [0002] Today, the party and the government have put forward the circular economy construction guideline to encourage sustainable development, and it is promising to use recyclable plastics to replace steel. With the advancement of plastic materials and processing technology, more and more attention has been paid to replacing metal pipes with plastic pipes. Because the metal pipes widely used in the past are bulky and heavy, especially for underground construction operations, the labor intensity is high, and the steel itself has poor corrosion res...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K5/5333C08K9/10C08K5/3477C08K13/06B29C47/00B29B9/06
Inventor 刘彦明郝冬梅陈崇伟尹亮陈涛林倬仕
Owner SHANGHAI RES INST OF CHEM IND
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