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Method for preparing plastic wood compound material/rigid foam composite and light weight type wall plate

A wood-plastic composite material and lightweight wallboard technology, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of low processing efficiency and difficulty in ensuring the strength of foamed materials, and achieve light weight and good mechanical properties. performance, ease of construction

Inactive Publication Date: 2008-12-17
JIANGSU SIFANG MACHINERY GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 03279638.2 discloses a manufacturing equipment for wood-plastic / foam composite wall profiles. The method for manufacturing wall components with this equipment is to extrude the outer layer of the wallboard with a twin-screw extruder, and extrude the outer layer with a single-screw extruder. The core layer foam powder is directly compounded to prepare wall components, but in actual production, it is difficult to achieve simultaneous extrusion of the outer layer and the foamed core layer, so the core layer can only use high foaming, so that not only the core The strength of the foam material of the layer is difficult to be guaranteed, and the processing efficiency is low

Method used

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  • Method for preparing plastic wood compound material/rigid foam composite and light weight type wall plate

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: Using 60 mesh hardwood powder 55wt%, high-density polyethylene (HDPE) 35wt%, polyolefin graft compatibilizer 4.0wt%, lubricant polyethylene wax 1.0wt%, crosslinking agent DCP (peroxide Diisopropylbenzene) 0.3wt%, dispersant stearic acid 0.5wt%, PKB-215 composite antioxidant 0.2wt%, inorganic filler calcium carbonate 5.0wt%, and processed according to the following steps,

[0021] a. The wood flour is added to the high-speed mixer, heated and stirred to 110°C to remove the water in the wood flour, and at the same time, the dispersant and inorganic fillers are added to make a dried wood flour raw material;

[0022] b. Continue to add high-density polyethylene, compatibilizer, lubricant, cross-linking agent, and antioxidant to the wood flour raw materials and mix them at high speed to 120°C, and mix the materials thoroughly to make composite raw materials;

[0023] c. The mixed composite raw materials are added to the SJZ-80 / 156 conical twin-screw extruder for blend...

Embodiment 2

[0026] Example 2: The processing steps are the same as in Example 1. The microencapsulated red phosphorus flame retardant is added to the pellet formulation, and the distribution ratio of each component is: 60 mesh wood powder 55wt%, high-density polyethylene (HDPE) 30wt% , Polyolefin grafting compatibilizer 4.0wt%, lubricant polyethylene wax 1.0wt%, crosslinking agent DCP (dicumyl peroxide) 0.3wt%, dispersant stearic acid 0.5wt%, composite PKB-215 Antioxidant 0.2wt%, inorganic filler calcium carbonate 4.0wt%, microencapsulated red phosphorus environmentally friendly flame retardant 5.0wt%. Using the components of this formula and the processing equipment and technology of Example 1, a flame-retardant composite lightweight wallboard was prepared.

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Abstract

The invention relates to a method for manufacturing a composite light wall made from WPC material / rigid foam. The method comprises two procedures of the molding of the outer layer of a hollow wall member and the on-site filling of a core layer. After being mixed and plasticated, wood fiber material, polymer material, various accessory ingredients and additives are made into the granular WPC material by a screw extruder. After being added into the screw extruder, the granular material is made into the outer layer of the wall member. With the completion of processes of hand piece, vacuum cooling, shaping, traction and cutting, the outer layer of the hollow wall member is obtained. A froth placer is used for performing on-site rapid rigid aeration for polyurethane material that is filled into the outer layer of the wall member, thus making a composite light wall plate made from the WPC material / rigid foam. The method for manufacturing the composite light wall made from the WPC material / rigid foam avoids the problem that the core layer and the outer layer of the wall member can not be extruded simultaneously and the core layers with different densities can be filled and foamed according to the strength of the wall member and on-site requirements, thus ensuring the transverse compressive strength of the wall member. The method for manufacturing the composite light wall made from the WPC material / rigid foam is convenient and flexible and has wide application range.

Description

Technical field [0001] The invention relates to a preparation method of a plastic-wood composite material / hard foam composite lightweight wallboard, specifically, a lightweight wall body using a plastic-wood composite material as the outer layer of the wallboard and a rigid polyurethane foam material as the core layer Components, can be used to make light-weight buildings and partition walls. Background technique [0002] Lightweight wall panels are the leading product in the development of wall materials in our country. The existing light steel structure factory buildings, the light steel siding used as walls and roofs are made of thin iron sheet, expandable polystyrene board, aluminum foil, Composite materials such as paper have certain functions of heat preservation, sound insulation, and earthquake resistance, but are relatively heavy, have large defects in stability, corrosion resistance, and decoration, and are poor in installation. The plastic-wood composite material devel...

Claims

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Application Information

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IPC IPC(8): B29D31/00C08L97/02B29C47/92B29C44/60B29B9/06C08L75/04B29C47/00B29C44/18B29C44/38B29C47/40B29D99/00B29C48/40B29C48/92B29C48/95
CPCB29C48/92B29C2948/92704B29C48/04B29C48/07B29C48/11B29C48/12B29C48/40B29C48/9185B29C2948/92895B29C2948/92904B29C48/95
Inventor 梁光仁薛平陈亚伟贾明印
Owner JIANGSU SIFANG MACHINERY GROUP
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