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Waste polypropylene modified thin-walled corrugated tube and manufacture method thereof

A waste polypropylene and corrugated pipe technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of producing thin-walled corrugated pipes and the inability to use waste polypropylene, etc., and achieve low production costs and joining methods Simple and cheap effect

Inactive Publication Date: 2012-05-30
柳州市瑞和塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a waste polypropylene modified thin-wall corrugated pipe and its manufacturing method which utilize waste polypropylene modification to strengthen and toughen, obtain high melt strength, low production cost, and no pollution to the environment, to solve the problem of Currently unable to use waste polypropylene to produce thin-walled corrugated pipe technical problems

Method used

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  • Waste polypropylene modified thin-walled corrugated tube and manufacture method thereof
  • Waste polypropylene modified thin-walled corrugated tube and manufacture method thereof
  • Waste polypropylene modified thin-walled corrugated tube and manufacture method thereof

Examples

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Effect test

Embodiment 1

[0039] A waste polypropylene modified thin-wall corrugated pipe, which is made by using waste polypropylene modified to strengthen and toughen to improve the melt strength and then melted and extruded through a plastic extruder to form the components of the waste polypropylene modified thin-wall corrugated pipe The content is calculated in parts by weight as:

[0040] 97 parts of modified polypropylene, 3 parts of antioxidant;

[0041] The modified polypropylene is mixed with waste polypropylene, modified auxiliary agent peroxide masterbatch, small molecule monomer masterbatch, and calcium stearate, and the content of each component of the modified polypropylene is expressed in parts by weight Calculated as:

[0042] 75 parts of waste polypropylene, 4 parts of peroxide masterbatch, 20 parts of total small molecule monomer masterbatch, 0.4 part of stearate;

[0043] The peroxide masterbatch is a masterbatch made of activated inorganic powder as a carrier, mixed with peroxide,...

Embodiment 2 Embodiment 6

[0050]The waste polypropylene modified thin-walled corrugated pipe with different components content is made by using waste polypropylene modified to strengthen and toughen to improve the melt strength, and then melted and extruded through a plastic extruder to form a waste polypropylene modified thin-walled corrugated pipe. The content of each component is calculated in parts by weight:

[0051] 97-99.9 parts of modified polypropylene, 0.1-3 parts of antioxidant; (see attached table 1)

[0052] The modified polypropylene is mixed with waste polypropylene, modified auxiliary agent peroxide masterbatch, small molecule monomer masterbatch, and calcium stearate, and the content of each component of the modified polypropylene is expressed in parts by weight Calculated as:

[0053] 73-81 parts of waste polypropylene, 3-6 parts of peroxide masterbatch, 15-20 parts of small molecule monomer masterbatch, 0.3-0.6 part of stearate; (see attached table 2)

[0054] The peroxide masterba...

Embodiment 7

[0061] A method for manufacturing waste and old polypropylene modified thin-walled corrugated pipes, the method is to use waste and old polypropylene to modify, strengthen and toughen to improve the melt strength, and then melt and extrude the waste and old polypropylene modified thin-walled pipe through a plastic extruder. Wall bellows, the specific method comprises the following steps:

[0062] ①, making activated inorganic powder

[0063] Take 90-99 parts of inorganic powder, 0.5-5 parts of coupling agent, and 0.5-5 parts of dispersant, put the above-mentioned inorganic powder, coupling agent and dispersant in a stirrer and stir until 90-100°C out of the pot to get Activated inorganic powder;

[0064] ②. Making modified additive peroxide masterbatch

[0065] Take 70 parts of activated inorganic powder, 10 parts of peroxide, and 20 parts of thermoplastic elastomer, put the thermoplastic elastomer into the internal mixer, heat and stir until molten state, cool to below 140°...

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Abstract

The invention relates to a waste polypropylene modified thin-walled corrugated tube. The waste polypropylene modified thin-walled corrugated tube is made from the following ingredients in parts by weight: 97-99.9 parts of modified polypropylene and 0.1-3 parts of oxidation inhibitor; and the modified polypropylene is made by mixing waste polypropylene with a modification additive, and the modified polypropylene is made from the following ingredients in parts by weight: 73-81 parts of waste polypropylene, 3-6 parts of peroxide master batch, 15-20 parts of micromolecular monomer master batch and 0.3-0.6 part of stearate. The thin-walled corrugated tube is made through carrying out melt extrusion on the waste polypropylene by a plastic extruder after the melt strength of the waste polypropylene is improved by modification, and a manufacture method of the waste polypropylene modified thin-walled corrugated tube comprises the steps of manufacturing activated inorganic powder, manufacturing the peroxide master batch, manufacturing the micromolecular monomer master batch, manufacturing the modified polypropylene, manufacturing the thin-walled corrugated tube, and the like. The waste polypropylene modified thin-walled corrugated tube is good in forming and high in melt strength; and the manufacture method of the waste polypropylene modified thin-walled corrugated tube is simple in technological process, low in production cost and free in environmental pollution.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a waste polypropylene modified thin-wall corrugated pipe and a manufacturing method thereof. Background technique [0002] Polypropylene (hereinafter referred to as PP) foaming material has a wide market demand for its excellent heat resistance and mechanical properties, but PP is a crystalline polymer, its softening point and melting point are very close, and its melting range is narrow. When the crystalline melting point is thermoformed, the strength drops sharply, so that the viscoelastic region of PP cannot be kept stable in a wide temperature range during thermoforming, that is, the melt strength of PP drops rapidly after the temperature is higher than the crystalline melting point, and its viscosity also decreases. It will drop rapidly, and it is difficult to form this non-viscoelastic PP melt film at high temperature, especially when processing thin-walled bell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08K13/06C08K9/10C08K9/04C08K5/14C08K5/098B29C47/00F16L11/11
Inventor 黎明
Owner 柳州市瑞和塑料科技有限责任公司
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