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PVC (polyvinyl chloride) alloy for ultrathin coextrusion and preparation method of PVC alloy

A PVC resin and ultra-thin technology, applied in the field of PVC alloys, can solve the problems of easy bending of the produced products, poor low-temperature impact resistance, poor flow performance, etc., to broaden the application area and processing, good weather resistance, and reduce processing cost effect

Active Publication Date: 2014-02-12
ANHUI CONCH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For PMMA / PVC, ASA / PVC co-extruded profiles, although they can use the same mold, the same equipment and the same process, and the thickness of the co-extruded layer can be controlled at 0.1-0.3mm, and has excellent weather resistance , but due to the material difference between PMMA, ASA and PVC, the low-temperature impact resistance of PMMA / PVC, ASA / PVC co-extruded profiles is far worse than that of white PVC profiles, which is prone to brittleness. The product is prone to bending
For PVC / PVC co-extruded profiles, due to the poor fluidity of PVC itself, the thickness of the co-extruded layer of PVC / PVC co-extruded profiles must be controlled at least above 0.6mm, and special runner molds and PVC-specific co-extrusion machines must be used. Unable to use the same mold, the same equipment and the same process with PMMA / PVC, ASA / PVC co-extrusion

Method used

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  • PVC (polyvinyl chloride) alloy for ultrathin coextrusion and preparation method of PVC alloy
  • PVC (polyvinyl chloride) alloy for ultrathin coextrusion and preparation method of PVC alloy
  • PVC (polyvinyl chloride) alloy for ultrathin coextrusion and preparation method of PVC alloy

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Experimental program
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Effect test

Embodiment 1

[0041] Present embodiment PVC alloy formula weight part formula component is referring to embodiment 1 in following table 1, and its implementation method is as follows:

[0042] A. Through the automatic batching system, the required materials are automatically measured according to a certain formula ratio, and then put into the thermal mixer for mixing. During the thermal mixing process, the moisture in the mixture is fully removed by thermal mixing, and the materials are in the thermal mixer. After mixing to 110°C, it is discharged into a cold mixer, and after cold mixing to 40°C, foreign matter is removed by a Roots blower and a vibrating sieve, and then enters a storage tank and is homogenized for 24 hours.

[0043] B. After the powdery mixture enters the extruder from the hopper on the extrusion line, as it moves forward continuously and the temperature changes during the extrusion process, the material slowly changes from solid to viscous fluid state, and the melt passes ...

Embodiment 2

[0045] Present embodiment PVC alloy formula weight part formula component is referring to embodiment 2 in following table 1, and its implementation method is as follows:

[0046] A. Through the automatic batching system, the required materials are automatically measured according to a certain formula ratio, and then put into the thermal mixer for mixing. During the thermal mixing process, the moisture in the mixture is fully removed by thermal mixing, and the materials are in the thermal mixer. After mixing to 110°C, it is discharged into a cold mixer, and after cold mixing to 40°C, foreign matter is removed by a Roots blower and a vibrating sieve, and then enters a storage tank and is homogenized for 24 hours.

[0047] B. After the powdery mixture enters the extruder from the hopper on the extrusion line, as it moves forward continuously and the temperature changes during the extrusion process, the material slowly changes from solid to viscous fluid state, and the melt passes ...

Embodiment 3

[0049] Present embodiment PVC alloy formula weight part formula component is referring to embodiment 3 in following table 1, and its implementation method is as follows:

[0050] A. Through the automatic batching system, the required materials are automatically measured according to a certain formula ratio, and then put into the thermal mixer for mixing. During the thermal mixing process, the moisture in the mixture is fully removed by thermal mixing, and the materials are in the thermal mixer. After mixing to 120°C, it is discharged into a cold mixer, and after cold mixing to 45°C, foreign matter is removed by a Roots blower and a vibrating sieve, and then enters a storage tank and is homogenized for 24 hours.

[0051] B. After the powdery mixture enters the extruder from the hopper on the extrusion line, as it moves forward continuously and the temperature changes during the extrusion process, the material slowly changes from solid to viscous fluid state, and the melt passes ...

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Abstract

The invention discloses a PVC (polyvinyl chloride) alloy for ultrathin coextrusion and a preparation method of the PVC alloy. The PVC alloy comprises the following substances in parts by weight: 100 parts of PVC, 3-15 parts of titanium pigment, 3-7 parts of stabilizer, 3-16 parts of ACR (acrylate) processing agent, 0.1-2 parts of antioxidant, 0.3-2.0 parts of light stabilizer, 0-50 parts of ASA (acrylonitrile styrene acrylate), 0-50 parts of PMMA (polymethyl methacrylate), 0-10 parts of filling agent and 0-0.1 part of toner. According to the PVC alloy prepared by utilizing the preparation method, molds and devices utilized in an ultrathin coextrusion technique of PMMA or ASA are utilized; the PVC alloy, the PMMA / PVC and ASA / PVC coextruded section bar can be universally prepared by the molds and the devices, so that the investments on the devices and the molds for machining the PVC coextruded proximate matters are reduced; as the thickness of a coextruded layer is controlled to be 0.1-0.3 mm, the shock resistance of the PVC alloy is obviously superior to that of the coextruded proximate matters produced from pure PMMA or ASA particles, and the PVC alloy has good weather fastness.

Description

technical field [0001] The invention relates to a PVC alloy, in particular to a PVC alloy for ultra-thin co-extrusion and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. Polyvinyl chloride has been widely used in various products in various industries. As an emerging chemical building material, PVC door and window profiles have become an indispensable new building material in my country's construction industry because of its characteristics of energy saving, heat insulation, heat preservation, environmental protection, and easy installation. As a kind of PVC plastic profiles, PVC co-extruded profiles are in increasing market demand due to their rich colors or excellent weather resistance. [0003] PVC alloy is a composite material obtained by blending and modifying various resins with PVC as the main body. The word "alloy" has nothing ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L33/08C08L33/10C08K13/02C08K3/22C08K5/134C08K5/132C08K3/26C08K3/34
Inventor 王杨林朱守益程建军唐圣奎张鹏刘威韩英才
Owner ANHUI CONCH GRP
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