KR20110065590A - Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same - Google Patents

Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same Download PDF

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Publication number
KR20110065590A
KR20110065590A KR1020090122151A KR20090122151A KR20110065590A KR 20110065590 A KR20110065590 A KR 20110065590A KR 1020090122151 A KR1020090122151 A KR 1020090122151A KR 20090122151 A KR20090122151 A KR 20090122151A KR 20110065590 A KR20110065590 A KR 20110065590A
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KR
South Korea
Prior art keywords
wood
synthetic wood
water glass
flame retardancy
synthetic
Prior art date
Application number
KR1020090122151A
Other languages
Korean (ko)
Inventor
남경구
박종성
손정일
Original Assignee
(주)엘지하우시스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)엘지하우시스 filed Critical (주)엘지하우시스
Priority to KR1020090122151A priority Critical patent/KR20110065590A/en
Publication of KR20110065590A publication Critical patent/KR20110065590A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/029—Feeding; Proportioning; Controlling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/28—Moulding or pressing characterised by using extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B27N7/005—Coating boards, e.g. with a finishing or decorating layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N9/00—Arrangements for fireproofing

Abstract

The present invention relates to a synthetic wood having excellent flame retardancy and economics, and to a method of manufacturing the same, more particularly in a synthetic wood made of wood powder and plastic, the surface of the synthetic wood is characterized by excellent flame retardancy and economic efficiency It relates to a synthetic wood and a method for producing the same.

According to the present invention, there is an effect of providing a water glass-coated synthetic wood excellent in flame retardancy and economic efficiency and its manufacturing method by a continuous process.

Description

Wood Plastic Composite Having Excellent Flame Retardant And Low Manufacturing Cost, And Method Of Making The Same}

The present invention relates to a synthetic wood having excellent flame retardancy and economics and a method for producing the same, and more particularly to a water glass-coated synthetic wood having excellent flame retardancy and economical efficiency and a method for producing the same by a continuous process.

Synthetic wood is generally very vulnerable to fire because it contains a large amount of wood powder, etc. In order to solve this problem, a conventional method of incorporating an expensive flame retardant, or coating the manufactured synthetic wood with a flame retardant composition in order to solve the problem It was used a lot.

However, a method of incorporating a flame retardant into the synthetic wood or coating the flame retardant composition does not have a sufficient flame retardant effect, and there is a large cost burden.

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a water glass-coated synthetic wood excellent in flame retardancy and economical efficiency and its manufacturing method by a continuous process.

In order to achieve the above object, the present invention provides a synthetic wood excellent in flame retardancy and economics, characterized in that in the synthetic wood made of wood powder and plastic, the surface of the synthetic wood is coated with water glass.

In another aspect, the present invention provides a manufacturing method by a continuous process of the synthetic wood excellent in flame retardancy and economy.

As described above, according to the present invention, there is an effect of providing a water glass-coated synthetic wood having excellent flame retardancy and economic efficiency and its manufacturing method by a continuous process.

Hereinafter, the present invention will be described in detail.

Synthetic wood having excellent flame retardancy and economic efficiency of the present invention is a synthetic wood made of wood powder and plastic, characterized in that the surface of the synthetic wood is coated with water glass.

The wood flour is not particularly limited, but can be used in rice, sawdust, short fibers, etc., the specific use content is preferably in the range of 10 to 80% by weight, more than 50 to 60% by weight in view of the flame retardant side desirable.

The plastic is preferably used polyolefin resin such as polypropylene, polystyrene, when using these resins are environmentally friendly advantages over other resins.

The plastic is preferably contained in 10 to 50% by weight relative to the extruded synthetic wood, there is an advantageous effect on the compatibility with the wood flour within this range.

The water glass preferably has a pH of 10 to 12, a solid content of 10 to 40%, and a specific gravity of 1 to 2, and has a uniform adhesive force and a flame retardant effect within this range.

In the method for producing a synthetic wood having excellent flame retardancy and economic efficiency of the present invention, a method for producing a synthetic wood consisting of wood powder and plastic, comprising the steps of: a) kneading wood powder and plastic, and then extruding the composite wood in a panel form; And b) passing the extruded synthetic wood through a water glass coating solution or a water glass coating injector to produce a water glass coated synthetic wood, wherein steps a) and b) are characterized in that the continuous process. .

The method for producing a synthetic wood having excellent flame retardancy and economy of the present invention may further include a drying step after the water glass coating.

The wood flour is not particularly limited, but can be used in rice, sawdust, short fibers, etc., the specific use content is preferably in the range of 10 to 80% by weight, more than 50 to 60% by weight in view of the flame retardant side desirable.

The plastic is preferably used polyolefin resin such as polypropylene, polystyrene, when using these resins are environmentally friendly advantages over other resins.

The plastic is preferably contained in 10 to 50% by weight relative to the extruded synthetic wood, there is an advantageous effect on the compatibility with the wood flour within this range.

In this case, the kneading and extrusion conditions are not limited thereto, but as described in the following examples, it is sufficient to coat water glass on the extruded synthetic wood. In addition, the extrusion is a hopper into which the raw material is introduced as shown in Figure 1, a heating cylinder provided in the lower portion of the hopper to dissolve the raw material by heating of the heater, and a hydraulic motor provided at the rear end of the heating cylinder It is possible to use an extrusion molding machine including an extrusion screw for supplying the melted raw material to the extrusion head of the leading end while rotating by.

The water glass preferably has a pH of 10 to 12, a solid content of 10 to 40%, and a specific gravity of 1 to 2, and has a uniform adhesive force and a flame retardant effect within this range.

The water glass coating spray apparatus may be a spray spray type in which the water glass is sprayed with a spray sol on the surface of the synthetic wood.

The drying step is preferably a hot air drying method, it is preferable to dry for 5 to 10 seconds at 100 to 200 ℃, if exceeding this range may be severely dry and crack the coated surface.

The continuous process is to work in the extrusion step in the water glass coating step, there is an effect of reducing the airborne (number of people required for a certain work in labor hours or working days).

1 schematically shows the overall manufacturing process of the synthetic wood.

Hereinafter, preferred embodiments are provided to help understanding of the present invention, but the following examples are merely for exemplifying the present invention, and various changes and modifications within the scope and spirit of the present invention are apparent to those skilled in the art. It is natural that such variations and modifications fall within the scope of the appended claims.

[Example]

Example 1

50 parts by weight of wood flour (brown rice) and 50 parts by weight of polypropylene resin were introduced into the extruder and kneaded, and extruded into a synthetic wood having a 150 cm × 7 cm cross-sectional shape using an extrusion die shown in FIG. 1.

The extruded synthetic wood is continuously transferred to the water glass coating injector by a die (die) cooling line connected to the die, and the transferred synthetic wood is continuously transferred to the pH 11, solid content 25% by the water glass coating injector. And it was coated with a water spray spray having a specific gravity 1 to finally prepare a water glass coated synthetic wood.

Example 2

Except for replacing the polypropylene resin with a polyethylene resin in Example 1 and impregnated with a water glass coating bath, the same process was repeated to prepare a synthetic wood.

As a result of measuring the flame retardancy of the synthetic wood finally prepared in Examples 1 and 2, it was confirmed that the water glass-coated synthetic wood of the present invention (Examples 1 and 2) has both excellent flame retardancy.

1 is a front view schematically showing the overall configuration of the apparatus for producing synthetic wood according to the present invention.

Claims (7)

In synthetic wood consisting of wood flour and plastic, The synthetic wood surface is flame retardant and economical excellent wood, characterized in that coated with water glass. The method of claim 1, The wood flour, synthetic wood having excellent flame retardancy and economy, characterized in that using at least one selected from the group consisting of rice paddy, sawdust, short fibers in the range of 10 to 80% by weight. 3. The method of claim 2, The wood flour, synthetic wood, excellent flame retardancy and economical, characterized in that used in the range of 50 to 60% by weight. The method of claim 1, The plastic is excellent in flame retardancy and economy, characterized in that the polyolefin resin such as polypropylene, polyethylene, polystyrene is used in the range of 10 to 50% by weight. The method of claim 1, The water glass, pH 10 to 12, solid content 10 to 40% and specific gravity of 1 to 2, characterized in that the flame retardancy and economic efficiency excellent wood. In the method for producing a synthetic wood consisting of wood flour and plastic, a) kneading wood flour and plastic, and then extruding it into the synthetic wood in the form of a panel; And b) passing the extruded synthetic wood through a water glass coating solution or a water glass coating spray device to produce a water glass coated synthetic wood; The a) and b) step is a method of producing a synthetic wood with excellent flame retardancy and economics, characterized in that the continuous process. The method of claim 6, The method of manufacturing the synthetic wood, the method of producing a synthetic wood with excellent flame retardancy and economical characteristics, characterized in that it further comprises a drying step after the water glass coating.
KR1020090122151A 2009-12-10 2009-12-10 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same KR20110065590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090122151A KR20110065590A (en) 2009-12-10 2009-12-10 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090122151A KR20110065590A (en) 2009-12-10 2009-12-10 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same

Publications (1)

Publication Number Publication Date
KR20110065590A true KR20110065590A (en) 2011-06-16

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KR1020090122151A KR20110065590A (en) 2009-12-10 2009-12-10 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038880A1 (en) * 2012-09-06 2014-03-13 주식회사 엘지하우시스 Wood polymer/plastic composite material having transparent surface layer
CN110253811A (en) * 2019-05-25 2019-09-20 北京化工大学 A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material
WO2021261912A1 (en) * 2020-06-24 2021-12-30 공석태 Method for preparing flame retardant resin and flame retardant composite plastic, and method for manufacturing flame retardant product by using same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038880A1 (en) * 2012-09-06 2014-03-13 주식회사 엘지하우시스 Wood polymer/plastic composite material having transparent surface layer
CN104520081A (en) * 2012-09-06 2015-04-15 乐金华奥斯株式会社 Wood polymer/plastic composite material having transparent surface layer
EP2865501A4 (en) * 2012-09-06 2016-03-02 Lg Hausys Ltd Wood polymer/plastic composite material having transparent surface layer
CN110253811A (en) * 2019-05-25 2019-09-20 北京化工大学 A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material
WO2021261912A1 (en) * 2020-06-24 2021-12-30 공석태 Method for preparing flame retardant resin and flame retardant composite plastic, and method for manufacturing flame retardant product by using same

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