KR20060103575A - The manufacturing method of muti-functional composite panel by co-extrusion and resin for the composite panel - Google Patents

Abstract

The present invention relates to a composition resin for producing a composite panel and a method for manufacturing the composite panel that can reinforce various functions by the co-extrusion method, and more specifically, to a polyolefin resin or a flame retardant-added polyolefin resin, these The composite panel composition resin and the manufacturing method developed to facilitate the insertion of the reinforcing agent (E) between the core resin (A) made of recycled resin and the metal plate (B) attached to the outer surface of the composite panel. It is about.

To realize this;

The internal core (A) composition of the present invention is a flame retardant polyolefin resin prepared by using a polyolefin resin or a polyolefin resin, including a flame retardant, a flame retardant aid, a lubricant, and an antioxidant, and using a recycled resin instead of a polyolefin resin used. Made of a resin composition prepared,

Reinforcing agent (E) uses a flexible sheet made of polyolefin resin reinforced with carbon fiber, glass fiber, inorganic material, etc.

Both sides of the inner core are coated with an adhesive with a coextrusion apparatus during the manufacturing of the inner core in a method that facilitates the attachment of the inner core and the reinforcing agent.

The inner core A, the adhesive sheet C, and the metal sheet B coated with the adhesive C1 prepared as described above are supplied from two hot rollers HR, respectively, and penetrate the hot roller HR. 9-layer structure of plate (B) / adhesive layer (C) / reinforcing agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / reinforcing agent (E) / adhesive layer (C) / metal plate (B) It characterized by consisting of a manufacturing process capable of continuously manufacturing a composite panel consisting of.

Polyolefin, Flame Retardant, Adhesive Layer Coating Flame Retardant Core, Reinforcement, Composite Panel

Description

Composition resin for manufacturing composite panel which can reinforce various functions by co-extrusion method and method for manufacturing composite panel {co-extrusion and resin for the composite panel}

<Description of the codes for the main parts of the drawing>

HR: hot roller

A; Internal core

B; Metal plate

C; Adhesive layer or adhesive sheet

C1; Applied adhesive layer

D; Cutting device

E; Reinforcement

The present invention is to prepare a composite resin for producing a composite panel and a composite panel that can reinforce various functions by co-extrusion method, a polyolefin resin or a polyolefin resin with a flame retardancy is added, made of these recycled resin The present invention relates to a composite panel composition resin and a manufacturing method developed to facilitate the insertion of a reinforcing agent (E) between an inner core (A) resin and a metal sheet (B) attached to an outer surface of the composite panel.

Looking at the recent accidents caused by fire, it is reported that the damages leading to asphyxiation due to toxic gases generated by combustion are reported to be serious rather than direct damages caused by fire. This is because the interior and exterior of buildings, flooring, wallpaper, furniture, and exterior materials of home appliances are made of materials consisting of halogen-based flame retardant materials or non-softening softening. Therefore, even in the composite panel, the range of use has been limited due to the flammability of the plastic core, which is the third raw material, and in order to compensate for this problem, among many techniques for using a flame retardant resin composition as an inner core;

(1) In particular, halogen-based flame retardant resins are mostly used with toxic inorganic flame retardants. Halogen-based flame retardants generate dioxins and furans, which are highly toxic carcinogens during combustion, and also produce toxic gases and dusts during the manufacture of flame-retardant resins. It is known as a substance that is likely to cause a fatal disease to workers.

(2) As the flame retardant resin composition, the halogen-heavy metal-based and halogen-inorganic flame retardant composite flame retardant resin compositions have excellent flame retardancy, but generate large amounts of toxic hydrogen bromide (HBr), hydrochloric acid (HCl), etc. at high temperature processing and combustion. In the case of oxygen-free, there is a problem that causes life and property, environmental pollution by generating a highly toxic carcinogen. Therefore, due to the movement to regulate the use of chloroprene, chlorosulfonated polyethylene, chlorinated polyethylene, ployvinyl choride, heavy metals (antimony), etc. used in the flame retardant resin composition including halogen-based, the composite panel manufacturers of plastic composite panels The manufacture of panels has the problem of using expensive imported flame retardant materials.

(3) And the inner core made of resin composition composed of excess inorganic materials used to give flame retardancy, aluminum hydroxide and magnesium hydroxide, etc., has low flexibility and has a composite or sheet-like application such as building materials. There is a difficult problem in manufacturing a panel. In addition, the inorganic materials used have a greater specific gravity than plastic resins, which leads to an increase in the weight of the whole building.

(4) In addition, in the preparation of a composition resin having added flame retardancy by adding aluminum hydroxide or magnesium magnesium, it is a composition resin formed by adding a thermosetting resin as a binder. In the processing process that must go through the extrusion process has a disadvantage that cannot be manufactured.

In addition, in the composite panel manufacturing technology to bond the inner plastic core and metal plate,

(1) In order to reinforce the inner core, which is weak against heat, the technique of manufacturing a composite panel using non-flammable woven glass fiber impregnates the glass fiber in the adhesive instead of the adhesive film in bonding the inner core and the metal plate. It is a technology to produce a glass fiber with an adhesive and to bond the inner core and the metal plate material. However, the problem of increasing the weight of the product by absorbing the excess adhesive in the glass fiber by impregnating the glass fiber to the adhesive, even if the problem is an increase in the use of the harmful adhesive has a problem that is not good for the environment or human body.

(2) The composite panel manufactured using metal as the inner core also has the problem of causing fatal problems to human body by adopting lead welding method.

(3) It is difficult to mass-produce the composite panel in a continuous process in manufacturing the composite panel, which leads to an increase in the manufacturing cost of the product, which makes it difficult to generalize it.

Therefore, there is no technology for additionally imparting a special function to the composite panel by using a reinforcing agent between the inner core and the metal sheet pursued by the present invention.

The present invention has been made to solve the above problems,

Composite panel composition resin and composite panel manufacturing method which can reinforce various functions by co-extrusion method, the inner core (A) composition of the present invention is a polyolefin resin or a polyolefin resin flame retardant, flame retardant aid, lubricant, It consists of a flame-retardant polyolefin resin prepared by including an antioxidant, and a resin composition prepared by using a recycled resin instead of the polyolefin resin used,

Reinforcing agent (E) uses a flexible sheet made of polyolefin resin reinforced with carbon fiber, glass fiber, inorganic material, etc.

In order to facilitate the attachment of the inner core and the reinforcing agent, both sides of the inner core are coated with an adhesive with a coextrusion apparatus during the manufacturing of the inner core.

The inner core (A), the adhesive sheet (C), and the metal sheet (B) coated with the adhesive (C1) prepared in this way are supplied from two hot rollers (HR), respectively, and penetrate the final hot roller (HR). 9 layers of metal plate (B) / adhesive layer (C) / reinforcing agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / reinforcing agent (E) / adhesive layer (C) / metal plate (B) It is characterized by consisting of a manufacturing process capable of continuously manufacturing a composite panel having a structure.

In order to achieve the above object, the internal core of the composite panel may be a polyolefin resin, a polyolefin resin having a flame retardancy added thereto, or a composition resin having a flame retardant material added thereto.

Here, the resin used as the main component of the polyolefin resin is polyethylene (PE, polyethtylene), polypropylene (PP, polypropylene), polycarbonate (PC, polycarbonate), acrylonitrile-butadiene-styrene resin (ABS, acrylonitrile butadiene), polybutylene terephtalate (PBT), polyethylene terephthalate (PET, polyethylene terephtalate), polyphenylene sulfone (PPS, polypenylene sufide), polystyrene (PS, poly styrene), vinyl chloride (PVC) , polyvinyl chloride) and polyesterimide resins (PEI, polyetherimide) are used. These resins are either raw or recycled resins, which are used alone or in combination.

And the composition resin comprising a flame retardant material is made of polyolefin resin, flame retardant, flame retardant aid, lubricant, antioxidant, polyolefin resin and flame retardant, flame retardant aid, lubricant, for preparing the composition of the present invention, Antioxidants were placed in an extruder and melt mixed to prepare pellets.

Flame retardants used nitrogen-based melamine-based, phosphorus-based and inorganic-based flame retardants to solve the problem of toxic gases such as dioxins, highly toxic carcinogens, and furans during the combustion of existing flame retardant plastic composite panels. The nitrogen-based melamine used in the present invention is melamine polyphosphate (MPP), non-halogen condensed phosphorus compound as phosphorus, polyphosphate and phosphorus as inorganic flame retardant, such as aluminum hydroxide, magnesium hydroxide, zinc stannate and molybdenum Using flame retardant materials such as acid salts, there is no toxic gas emission during combustion due to fire, and resin compositions satisfying KS F 2271 flame retardant class 2 ~ 3, UL 94 standard V-0, V-1 standards are produced. It was used alone or two or more selected.

A flame retardant adjuvant used a phosphate ester type compound.

The lubricant is used to improve the miscibility of different substances added to the thermoplastic resin by using fatty acids, and serves to prevent mechanical property deterioration.

Antioxidant is added to the primary antioxidant for the action of trapping the generated radicals and preventing the progress of radical chain reaction in the present invention for the purpose of suppressing and preventing the deterioration of quality during manufacture and use, and does not generate radicals A second antioxidant was further added to exert the effect of decomposition into the mold. Therefore, phenolic antioxidants, monophenolic, bisphenolic, and polymeric phenolic antioxidants were used as primary antioxidants, and sulfur-based antioxidants and phosphorus antioxidants were used as secondary antioxidants. In addition, two or more kinds of antioxidants used in accordance with the thermoplastic resin were selected and used.

The polyolefin-based thermoplastic resin used is based on the total weight of the resin composition, 35 to 64% by weight, flame retardant 30 to 55% by weight, flame retardant auxiliary 5 to 10% by weight, 0-6% by weight of lubricant and 0.01-0.6% by weight of antioxidant were used.

In the present invention, when the material to be prepared for the composition resin is a powder, the raw material input screw mounted on the lower end in the circular triangular pyramid-shaped hopper designed to rotate at a constant speed per hour is rotated between the screw groove in the forward direction The thermoplastic resin and powder are transported to supply the amount corresponding to the present invention quantitatively to the extruder, and in the case of a fine powder, it can cause dust generation in the workplace. Supplied

Therefore, the ingredients are added to the extruder by the composition, or the materials that can be mixed in advance are mixed and put into the extruder, it was prepared into a pelletized composition resin at an extrusion temperature of 150 ~ 350 ℃.

In particular, it is preferable to use less than 6% by weight of the lubricant in preparing the composition resin of the present invention. When using more than 6% by weight of the lubricant stearic acid, rather than reducing the flame retardancy or forming a surface on the surface of the core due to the weakened adhesive strength between the inner core (C) and the metal plate (B) during the manufacturing of the composite panel laminated structure There was a problem that is difficult to manufacture a composite panel.

The composition resin pellets prepared in the above process was prepared in such a manner that an adhesive was applied to both surfaces of the inner core by coextrusion in manufacturing a sheet-shaped inner core having a predetermined thickness.

In this way, the inner core manufactured by applying the adhesive on the outer surface is the same metal as that of the existing composite panel structure when the composite panel is manufactured and the reinforcing agent is not used. A 5-layer composite panel consisting of a plate (B) / adhesive layer (C) / inner core (A) / adhesive layer (C) / metal plate (B) layer can be manufactured continuously. In the case of the adhesive sheet supplied in joining the inner core (C) and the metal plate (B), when the initial adhesive sheet (C) is attached to the manufacturing apparatus, a supply device for a smooth supply and an experienced person are required. In the case of using the inner core coated with the adhesive prepared by the present invention, it is characterized by the economical efficiency and easy manufacture of the composite panel according to the need for a supply device.

In addition, a reinforcing agent is additionally provided between the inner core (C) and the metal sheet (B) so that the metal sheet (B) / adhesive layer (C) / reinforcing agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) In continuously producing a composite panel having a nine-layer structure of a) / reinforcement (E) / adhesive layer (C) / metal plate (B), the present invention provides a composite panel having various features. That is, the addition of the reinforcing agent layer shows a number of features in the composite panel, but among them, in order to complement the flame retardancy of the existing inner core, impregnated glass fibers in the adhesive to the glass fiber coated with the adhesive core (C) and It is another feature of the present invention to improve the inefficient way of laminating between metal sheets (B). In this case, the reinforcing agent (E) mainly used a sheet having flexibility made of polyolefin resin reinforced with carbon fiber, glass fiber, and inorganic material. Carbon fiber, glass fiber, and inorganic material are nonflammable materials, which can give the composite panel the role of improving the flame retardancy of the inner core by heat and many other features. The glass fiber used in the present invention is resistant to high temperatures, does not burn, and contributes to supplementing the flame retardancy of the inner core, and has excellent mechanical strength, low elongation, electrical insulation, and thermal insulation, sound insulation, and the like. It has excellent elasticity and strength, showing excellent properties as a reinforcing material. In addition, the flexible sheet manufactured by adding an inorganic material is characterized by the fact that the composite panel can be manufactured to have a very excellent feature as a flame retardant reinforcing agent of the inner core, which is somewhat inferior in flame retardancy such as a honeycomb structure.

In the method of facilitating the attachment of the inner core and the reinforcing agent, both sides of the inner core are coated with an adhesive (C1) with a coextrusion apparatus during the manufacture of the inner core, and thus the inside manufactured by applying the adhesive to the outer surface by the coextrusion method described above. In the case of the core, the reinforcing agent (E) shown in FIG. 1 when the composite panel for a special purpose to be inserted for the improvement of the physical properties of the composite panel has the advantage of easy adhesion with the inner core.

The inner core (A), the adhesive sheet (C), and the metal sheet (B) coated with the adhesive (C1) prepared in this way are supplied from two hot rollers (HR), respectively, and penetrate the final hot roller (HR). 9 layers of metal plate (B) / adhesive layer (C) / reinforcement agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / reinforcement agent (E) / adhesive layer (C) / metal plate material (B) It is a manufacturing process for continuously manufacturing a composite panel composed of a structure.

At this time, the metal plate (B) was used alone or alloy composed of two or more components consisting mainly of aluminum (Al), zinc (Zn), titanium (Ti).

This preferred test example allows for a better understanding of the objects, features and effects of the present invention.

Test Example 1

The flame retardancy test for the resin composition prepared in the above process was 5mm × 5mm in size of the test piece, and it was shown in Table 1 by evaluating the self-extinguishing property using the vertical method. The flame retardant used in the present invention for the flame retardancy test for the prepared resin composition was flame retardant from 30% by weight of the total amount of the flame retardant compared to the total content, the conventional halogen-based flame retardant resin using only V-0 grade Although the flame retardancy was expressed, there was a disadvantage in that an unfavorable smell peculiar to Br compound was generated. In the resin composition of the present invention, there was no dripping phenomenon, but a resin using a halogen flame retardant produced a dripping phenomenon. As a result of this, Figure 2 shows a state after the flame-retardant test of the halogen-based flame retardant core material and the composition resin core material of the present invention. It was found that the composition resin formulated in the present invention is superior to the core material using the halogen-based flame retardant.

And metal plate material (B) / adhesive layer (C) / glass fiber (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / glass fiber manufactured using glass fibers as a reinforcing agent according to the present invention ( The flame retardant self-extinguishing properties of the composite panel manufactured with the 9-layer structure of E) / adhesive layer (C) / metal plate (B) were shown in [Table 2]. Comparing [Table 1] and [Table 2], it was found that the composite panel provided with the reinforcing agent was better in flame retardancy.

Item Specimen Specification T ₁ (seconds) T ₂ (seconds) Judgment Halogen flame retardant 40 5 × 5 ㎜ One One V-O 30 One One 20 One 1 ~ 2 Resin composition 60 One One V-O 40 One One 30 One 1 ~ 2

Item Specimen Specification T ₁ (seconds) T ₂ (seconds) Judgment Halogen flame retardant 40 5 × 5 ㎜ One One V-O 30 One One 20 One 1 ~ 2 Resin composition 60 One One V-O 40 One One 30 One One

[Flame Retardant Test]

◎ Related Standards: UL (underwriters laboratories) 94.

◎ Heat source: Use methyl alcohol lamp.

◎ Firework length: 5cm, Reaching length: 1cm

◎ Heating method:

― 10 seconds heat up / off time check: T ₁ .

― 10 seconds heat up / off time check: T ₂ .

Test Example 2

Composite panel and 5-layer structure of metal plate (B) / adhesive layer (C) / inner core (A) / adhesive layer (C) / metal plate (B) manufactured by using a flame-retardant core made from a flame-retardant resin composition An additional reinforcing agent is provided between the core (C) and the metal plate (B) to provide a metal plate (B) / adhesive layer (C) / reinforcement agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / A composite panel consisting of 9 layers of reinforcing agent (E) / adhesive layer (C) / metal plate (B) was prepared to compare and measure sound insulation, flexural strength, elongation, tensile strength, adhesive peeling strength, and appearance properties of composite panel. The results are shown in [Table 3] and [Table 4], respectively.

As shown in Table 3, the sound insulation of the 5-layered composite panel of the metal plate (B) / adhesive layer (C) / inner core (A) / adhesive layer (C) / metal plate (B) was 99%. or more (28.5dB), flexural strength and the peel strength of 130N / mm ² and good 137.6N / mm than 147N / 25mm ^2, to obtain the results of measurement of 196N / 25mm criteria, and the flat exterior yigeureo load dogwa stain resistance without Also excellent in repeatability of temperature. Metal plate (B) / adhesive layer (C) / reinforcing agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / reinforcing agent (E) / adhesive layer (C) / metal plate shown in Table 4 The nine-layer composite panel of (B) has a sound insulation of 99.9% or more (30.0 dB) than the five-layer composite panel, and 140.0 N / mm ² and 210.0 N / 25 mm in flexural strength and peel strength. And even better in appearance flatness, fouling resistance, and temperature repeatability. Therefore, it can be seen that it has better properties in all aspects, such as sound insulation, flexural strength, peel adhesion strength.

Evaluation item standard Test result Evaluation standard Sound insulation (dB) 20-28 / 500 MHz 28.5 KS F 2802 Flexural Strength (N / mm ² ) > 130 137.6 KS F 4737 Thin adhesive strength (N / 25mm) > 147 196.0 KS F 4737 Adhesion 100/100 100/100 KS F 4737 Pollution resistance Standard Gray No. 5 Standard Gray No. 5 KS F 4737 Cold and hot repeatability No abnormality clear KS F 4737

Evaluation item standard Test result Evaluation standard Sound insulation (dB) 20-28 / 500 MHz 30.0 KS F 2802 Flexural Strength (N / mm ² ) > 130 140.0 KS F 4737 Thin adhesive strength (N / 25mm) > 147 210.0 KS F 4737 Adhesion 100/100 100/100 KS F 4737 Pollution resistance Standard Gray No. 5 Standard Gray No. 5 KS F 4737 Cold and hot repeatability No abnormality clear KS F 4737

Although specific configurations and test examples of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified configurations and test examples should not be individually understood from the technical spirit or prospect of the present invention, and thus modified configurations and test examples should be included in the appended claims of the present invention.

As described above, the composition resin for producing a composite panel capable of reinforcing various functions by the co-extrusion method and the composite panel manufacturing method are environmentally friendly, have a flame retardant effect, and improve various physical properties. And manufacturing of a composite panel having a five-layered composite panel of metal sheet (B) / adhesive layer (C) / inner core (A) / adhesive layer (C) / metal sheet (B). Price competitiveness of products such as cost reduction and yield due to the simplification of the process and ease of manufacture of composite panels were accompanied, and metal plate (B) / adhesive layer (C) / reinforcing agent (E) / adhesive layer (C1) / internal core (A ) 9-layered composite panel of adhesive layer (C1) / reinforcement agent (E) / adhesive layer (C) / metal plate (B) is made of composite panel products with different characteristics by the type of reinforcing agent and composite panel products suitable for special use. The excellent competitiveness of the product was secured by the possibility of manufacturing.

Claims (4)

Inner core composition resin of the composite panel and the production method thereof; The internal core resin is a resin used as a main component of polyolefin resin, and it is polyethylene (PE, polyethtylene), polypropylene (PP, polypropylene), polycarbonate (PC, polycarbonate), acrylonitrile-butadiene-styrene resin (ABS, acrylonitrile butadiene), polybutylene terephtalate (PBT, polybutylene terephtalate), polyethylene terephthalate (PET, polyethylene terephtalate), polyphenylene sulfone (PPS, polypenylene sufide), polystyrene (PS, poly styrene), chloride Vinyl (PVC, polyvinyl chloride) and polyesterimide resin (PEI, polyetherimide) are used. These resins are raw or recycled resins, which are used alone or in combination of two or more materials. And the composition resin comprising a flame retardant material is made of polyolefin resin, flame retardant, flame retardant aid, lubricant, antioxidant, polyolefin resin and flame retardant, flame retardant aid, lubricant, for preparing the composition of the present invention, Among the antioxidants, the polyolefin-based thermoplastic resin used is 35 to 64% by weight of the resin composition, 30 to 55% by weight of the flame retardant, 5 to 10% by weight of the flame retardant aid, The composition resin prepared by using 0-6% by weight of lubricant and 0.01-0.6% by weight of antioxidant is added to the extruder, or the material that can be mixed in advance is mixed and placed in the extruder, and the pellet resin is extruded at an extrusion temperature of 150-350 ° C. In preparing and using the flame retardant, a nitrogen-based melamine-based, phosphorus-based and inorganic flame retardant was used. Nitrogen-based melamines are flame retardants such as melamine polyphoshphate (MPP), non-halogen condensed phosphorus compounds as phosphorus compounds, polyphosphates and phosphorus compounds, and aluminum hydroxide, magnesium hydroxide, zinc stannate and molybdate salts as inorganic flame retardants. One or two or more kinds of substances are selected and the flame retardant auxiliary agent is a phosphate ester compound, a lubricant is a fatty acid, and an antioxidant is a primary antioxidant, a phenolic antioxidant, a monophenolic, bisphenolic, or polymeric phenolic oxidation. An antioxidant was used, and sulfur-based and phosphorus-based antioxidants were used as secondary antioxidants. In addition, the composition resin is formed by using two or more kinds of antioxidants according to the thermoplastic resin to be used according to the thermoplastic resin. The method according to claim 1, When the material to be prepared for the composition resin is a powder, each of the thermoplastic resins between the screw grooves in the advancing direction while the raw material input screw mounted on the lower end of the circular triangular pyramid-shaped hopper designed to rotate at a constant speed per hour is rotated forward. And the powder is transferred to the extruder to quantitatively supply the composition corresponding to the present invention, and in the case of a fine powder, the composition resin pelletized in the extruder by supplying the closest to the extruder in a way to suppress the generation of dust in the workplace How to prepare. According to claims 1 and 2, The polyolefin resin or the prepared composition resin pellets were prepared by applying an adhesive to both surfaces of the inner core by coextrusion. As described above, the inner core manufactured by applying the adhesive to the outer surface is supplied with only the metal plate B and passes through the hot roller HR when the composite panel is manufactured. The same metal plate (B) / adhesive layer as the conventional composite panel structure ( C) A method in which a five-layered composite panel consisting of an inner core (A) / adhesive layer (C) / metal plate (B) layer is continuously produced. According to claim 3, In providing an additional reinforcing agent between the inner core (C) and the metal sheet (B) manufactured by applying an adhesive on the outer surface, the reinforcing agent (E) is polyolefin reinforced with carbon fiber, glass fiber, inorganic material, etc. Metal sheet (B) / adhesive layer (C) / reinforcement agent (E) / adhesive layer (C1) / inner core (A) / adhesive layer (C1) / reinforcement agent (E) / A method for continuously producing a composite panel having a nine-layer structure of an adhesive layer (C) / metal plate material (B).

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