Polymer alloy oxygen blocking material and preparation method as well as application thereof

A technology of polymers and alloys, which is applied in its preparation and in the field of polymer alloy oxygen barrier materials, can solve the problem that the oxygen barrier layer of the three-layer structure oxygen barrier plastic pipe cannot be protected, the structure of the five-layer structure oxygen barrier plastic tube is complex, Thin molded products have problems such as brittleness, and achieve the effects of excellent comprehensive performance, low linear expansion coefficient, and low shrinkage rate

Inactive Publication Date: 2013-01-30
ZHEJIANG MENRED COMFORT SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxygen barrier layer of the three-layer structure oxygen-barrier plastic pipe cannot be protected, and the structure of the five-layer structure oxygen-barrier plastic pipe is complicated, and the manufacturing cost of both is relatively high. The popularization and application are limited, and only a small amount of application is used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Embodiment 1: A polymer alloy oxygen barrier material, which is PO∽LCP alloy obtained by melt blending of polyolefin resin (PO), thermotropic liquid crystal resin (LCP) and compatibilizer. Among them, PO resin is 95% to 15%, LCP resin is 4.9% to 84.3%, and compatibilizer is 1% to 0.7%.

Example Embodiment

Example 2: A method for preparing a polymer alloy oxygen barrier material, using a side-feeding two-stage extrusion granulator, the LCP resin is melted and plasticized by an extruder, and the melt is extruded into the waist to open the In another extruder with a second feed port, it is merged with the PO tree and the compatibilizer melt being melt-plasticized and extruded in the extruder, and the melt blending of the three is started. LCP resin generates nano-scale fibers in situ, which are uniformly dispersed in PO resin to form molecular complexes. It is extruded into a filament shape, stretched, oriented, cooled and diced to obtain PO∽LCP alloy oxygen barrier material particles.

Example Embodiment

Example 3: The PO∽LCP alloy oxygen barrier material is coated on the surface of the polyolefin (PO) plastic pipe to obtain a two-layer structure oxygen barrier polyolefin plastic pipe, that is, the structure of the oxygen barrier plastic pipe is from the outer layer to the inside There are only oxygen barrier layers and plastic pipe layers, no adhesive layer, and no need for waterproof and anti-scratch protective layers, such as two-layer oxygen barrier PEXa pipe, two-layer oxygen barrier PEXb pipe, two-layer oxygen barrier PEXc tube, two-layer oxygen barrier PERT tube, two-layer oxygen barrier PB-1 tube, two-layer oxygen barrier PBR tube, two-layer oxygen barrier PPH tube, two-layer oxygen barrier PPB tube, two-layer oxygen barrier PPR tube, two-layer structure oxygen barrier PPRCT tube, etc.

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PUM

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Abstract

The invention discloses a polymer alloy oxygen blocking material, which is PO-LCP (Polyolefin-Liquid Crystal Polymer) alloy, wherein the alloy is prepared by melting and mixing the following components in percentage by weight: 95-15 percent of polyolefin resin, 4.9-84.3 percent of liquid crystal resin and 1-0.7 percent of compatibilizer. A preparation method comprises the following steps of: melting and plasticizing the LCP resin by an extruder by using a lateral feed two-section extrusion granulator; extruding melt of the resin into another extruder with a second feed port in the waist part in a duck-stuffing manner; converging the PO resin which is being melted, plasticized and extruded in the extruder with the compatibilizer melt; melting and mixing the three components; performing extrusion molding to form strips; and drawing, orientating, cooling and granulating to prepare PO-LCP alloy oxygen blocking material particles. The polymer alloy oxygen blocking material has wide application.

Description

technical field [0001] The present invention relates to a polymer alloy material, its preparation method and its use, in particular to a polymer alloy oxygen barrier material, its preparation method and its use. Background technique [0002] The oxygen permeability of most plastic pipes is relatively high. The disadvantage is that oxygen will penetrate through the pipe wall and dissolve into the medium conveyed in the pipe. The presence of oxygen in the medium will affect the metal pipes and metal equipment in the system. Accelerate oxidation and corrosion, increase the safety hazard of the system, shorten the service life of the system, pollute the transported medium, and provide breeding conditions for microorganisms in the medium. The higher the temperature of the medium, the more serious this disadvantage is, so the oxygen permeability rate of plastic pipes used in hot water systems is clearly stipulated in D1N4761, CJ / T175-2002 and other standards. [0003] In order to...

Claims

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Application Information

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IPC IPC(8): C08L23/04C08L23/10C08L101/12C08L51/06B29B9/06
Inventor 陈立楠于东明
Owner ZHEJIANG MENRED COMFORT SYST
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