KR20210115734A - Adhesive flame retardant pvc panel and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a polyvinyl chloride (PVC) adhesion type flame retardant panel, and a manufacturing method thereof. The panel comprises: a PVC panel; an adhesive layer disposed on a lower surface of the PVC panel and containing acrylic acid ester copolymers and surfactants; and release paper on a lower surface of the adhesive layer.

Description

PVC adhesive flame retardant panel and manufacturing method thereof

The present invention relates to a PVC adhesive flame retardant panel and a method for manufacturing the same.

As income increases, human aspirations for safe and comfortable housing construction to lead a happy life are increasing. In particular, interest in indoor interiors is greatly increasing, and interest in interior materials is also increasing.

Indoor interior construction materials include doors, wallpaper, ceiling materials, windows and doors, and flooring materials. Among them, doors are effective in expressing the beauty of space and connection in interior construction, and Because it can add to the stylishness of the interior through communication, it occupies a high proportion in the interior decoration.

In addition, as awareness of the safety of not only apartments, multi-family houses, and detached houses, but also dormitories, officetels, offices, hotels, etc. used by unspecified people increases, doors are given an increasingly important role not only in function related to access but also in safety. have. That is, the door is required to be manufactured in a direction that can contribute to preventing the spread of fire when a fire occurs. For example, since it is difficult to evacuate quickly due to the generation of toxic gas and smoke in case of a fire, the importance of the flame retardant function of the door for preventing the spread of fire is increasing.

As a conventional interior door material, solid wood, plywood, MDF, PB, ABS, etc. are used as a lower substrate, and materials such as veneer, HPM, LPM, PVC sheet are attached as an upper substrate on the lower substrate, and the upper substrate is Those coated with a flame retardant on the surface are used.

In this regard, Korean Patent Registration No. 10-1683591 discloses a flame retardant panel, but it contains a volatile organic compound as a flame retardant and is harmful to the human body. There is a situation.

Republic of Korea Patent No. 10-1683591

The present invention is to solve the problems of the prior art as described above, and by distributing a flame retardant throughout the inside and outside of the panel, a PVC adhesive flame retardant panel with excellent flame retardance performance and beautiful appearance by imparting a flame retardant function and its An object of the present invention is to provide a manufacturing method.

The present invention is PVC (Polyvinyl chloride) panel; and a pressure-sensitive adhesive layer disposed on the lower surface of the PVC panel, the pressure-sensitive adhesive layer comprising an acrylic acid ester copolymer, an acrylate compound, and a surfactant.

In addition, the present invention comprises the steps of preparing a release paper; forming a pressure-sensitive adhesive layer by applying an adhesive containing an acrylic acid ester copolymer and a surfactant on the release paper; and adhering the PVC panel on the pressure-sensitive adhesive layer.

The present invention can provide a PVC adhesive flame-retardant panel with excellent flame-retardant performance and beautiful appearance by imparting a flame-retardant function by distributing a flame-retardant material throughout the interior and exterior of the panel and a method for manufacturing the same.

In addition, the PVC adhesive flame retardant panel according to the present invention has very excellent flame retardancy, so it can delay the fire in case of a fire, suppress the generation of toxic gas, and also have the advantage that construction efficiency can be improved because it is very easy to use. .

1 is a perspective view schematically showing a PVC adhesive flame-proof panel of the present invention.

The present invention is PVC (Polyvinyl chloride) panel; an adhesive layer disposed on the lower surface of the PVC panel and comprising an acrylic acid ester copolymer, an acrylate compound, and a surfactant; and a release paper disposed on the lower surface of the pressure-sensitive adhesive layer.

In addition, the present invention comprises the steps of preparing a release paper; forming a pressure-sensitive adhesive layer by applying an adhesive containing an acrylic acid ester copolymer and a surfactant on the release paper; and adhering the PVC panel on the pressure-sensitive adhesive layer.

The PVC adhesive flame-retardant panel can be preferably used as an indoor interior material of a house, but is not limited thereto, and has excellent flame-retardant performance to delay the fire in case of a fire, suppress the generation of toxic gas, and also It is very easy and has the advantage that construction efficiency can be improved.

< PVC Adhesive Fire Retardant Panel >

PVC adhesive flame-resistant panel according to the present invention, PVC (Polyvinyl chloride) panel; an adhesive layer disposed on the lower surface of the PVC panel and comprising an acrylic acid ester copolymer, an acrylate compound, and a surfactant; and a release paper disposed on the lower surface of the pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer may further include a flame retardant if necessary.

The PVC (Polyvinyl chloride) flame retardant panel is not particularly limited, and a known PVC panel may be used according to the purpose of use of the PVC adhesive flame retardant panel according to the present invention.

_{For example, the PVC panel contains 20-100 parts by weight of Mg(OH) 2} , 1-40 parts by weight of an antimony (Sb)-based compound, and 1-30 parts by weight of a molybdenum (Mo)-based compound, based on 100 parts by weight of PVC solid content. Part and calcium borate (Ca ₃ (BO ₃ ) ₂ ) By including 1-40 parts by weight of the compound as a flame retardant, a PVC panel having a flame retardant effect can be used.

The Mg(OH) ₂ is It is used to impart flame retardant or flame retardant performance, and may be used in an amount of 20-100 parts by weight, more preferably 50-100 parts by weight, based on 100 parts by weight of PVC solid content. If the Mg(OH) ₂ is included in less than 20 parts by weight, the flame retardant or flame retardant performance is reduced, and when it exceeds 100 parts by weight, the workability is reduced, the defect rate is increased, and the strength of the panel is weakened.

The Mg(OH) ₂ preferably has an average particle diameter of 0.5 µm to 2.0 µm, more preferably 0.5 µm to 1.0 µm. If the average particle diameter exceeds 2.0㎛, it is difficult to maintain a uniform dispersion, and it is impossible to form a beautiful surface state without irregularities.

The antimony (Sb)-based compound is It is used as an auxiliary role for improving the flame retardant or flame retardant performance of the Mg(OH) ₂ during combustion, and may be used in an amount of 1-40 parts by weight, more preferably 1-20 parts by weight based on 100 parts by weight of PVC solid content. When the antimony (Sb)-based compound is included in less than 1 part by _{weight, it is difficult to improve the flame-retardant or flame-retardant performance of the Mg(OH) 2} , and when it exceeds 40 parts by weight, the workability is reduced, the defect rate is increased, and the panel strength is weakened.

The antimony (Sb)-based compound preferably has an average particle diameter of 0.5 μm to 2.0 μm, more preferably 0.5 μm to 1.0 μm. If the average particle diameter exceeds 2.0㎛, it is difficult to maintain a uniform dispersion, and it is impossible to form a beautiful surface state without irregularities.

The molybdenum (Mo)-based compound is used as a low smoke agent, and may be used in an amount of 1-30 parts by weight, more preferably 1-20 parts by weight based on 100 parts by weight of PVC solid content. When the molybdenum (Mo)-based compound is included in less than 1 part by weight, it is difficult to exhibit low smoke performance, and when it exceeds 30 parts by weight, the processability is deteriorated and the defect rate is increased.

The molybdenum (Mo)-based compound preferably has an average particle diameter of 0.5 μm to 2.0 μm, more preferably 0.5 μm to 1.0 μm. If the average particle diameter exceeds 2.0㎛, it is difficult to maintain a uniform dispersion, and it is impossible to form a beautiful surface state without irregularities.

The calcium borate (Ca ₃ (BO ₃ ) ₂ )-based compound is used as an auxiliary flame retardant to improve the low smoke performance of the molybdenum (Mo)-based compound, and 1-40 parts by weight based on 100 parts by weight of PVC solid content, more Preferably 1-30 parts by weight may be used. When the calcium borate (Ca ₃ (BO ₃ ) ₂ )-based compound is included in less than 1 part by weight, it is difficult to improve the low smoke performance of the molybdenum (Mo)-based compound, and when it exceeds 40 parts by weight, the workability is reduced and the defect rate increases.

The calcium borate (Ca ₃ (BO ₃ ) ₂ )-based compound has an average particle diameter of 0.5 μm to 2.0 μm, more preferably 0.5 μm to 1.0 μm. If the average particle diameter exceeds 2.0㎛, it is difficult to maintain a uniform dispersion, and it is impossible to form a beautiful surface state without irregularities.

As the flame-retardant and flame-retardant component used in the PVC panel, in addition to the Mg(OH) ₂ and the antimony (Sb)-based compound, the use of Al(OH) ₃ , ZnS, etc. can also be considered, but in the case of including these, residual flame ( It is not suitable for manufacturing PVC adhesive flame retardant panels because it can generate sparks) and debris (residual smoke).

For a specific example, the PVC panel, based on 100 parts by weight of PVC solid content, Mg(OH) ₂ 20-100 parts by weight, antimony (Sb)-based compound 1-40 parts by weight, molybdenum (Mo)-based compound 1-30 parts by weight parts and calcium borate (Ca ₃ (BO ₃ ) ₂ ) mixing 1-40 parts by weight of a compound to form a compound; forming the compound into a panel by calendar rolling; and optionally forming a pattern on one surface of the panel by an embossing process.

The pressure-sensitive adhesive layer is located on the lower surface of the PVC panel, and the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer includes an acrylic acid ester copolymer and a surfactant, and if necessary, a flame retardant, a terpene-based resin and a rosin-based resin. It may further include one or more selected from the group consisting of, and may further include a residual amount of water.

The acrylic acid ester copolymer (Acrylic Ester Co-Polymer) is used to bond PVC and the adherend by adhesion, and may include an acrylate monomer. The acrylic acid ester copolymer is preferably included in an amount of 30 to 80 parts by weight, more preferably 40 to 60 parts by weight, based on 100 parts by weight of the adhesive. When the acrylic acid ester copolymer is included in less than 30 parts by weight, there is a problem of adhesion, and when included in more than 80 parts by weight, there is a problem of deterioration of flame retardant performance.

The molecular weight of the acrylic acid ester copolymer may be 150,000 to 250,000, but is not limited thereto.

The acrylate monomer may include at least one kind from the group consisting of butyl acrylate and ethylhexyl acrylate, preferably 30 to 90 parts by weight based on 100 parts by weight of the acrylic acid ester copolymer, and 30 to 80 parts by weight. It is more preferably included in parts by weight. When one or more of the acrylate monomers is included in less than 30 parts by weight or more than 90 parts by weight from the group consisting of butyl acrylate and ethylhexyl acrylate, there is a problem in that adhesive strength is reduced.

The acrylate monomer includes at least one of butyl acrylate and ethylhexyl acrylate, and is selected from the group consisting of methyl methacrylate, acrylic acid, methacrylic acid, itaconic acid and glycidyl methacrylate. It may further include one or more of the following.

The surfactant is used so that the acrylate monomer can undergo emulsion polymerization in water, and may include an anionic surfactant, a nonionic surfactant, and a reactive anionic surfactant. The anionic surfactant is an APE (Alkylphenol Ethoxylate) free type anionic surfactant, and may include, for example, sulfate and sulfonate, and the nonionic surfactant is an APE free type. The nonionic surfactant may include, for example, an alkyl ether compound, and the reactive anionic surfactant may include, for example, an alkyl compound. One type or two or more types of the surfactant may be used.

The surfactant may include any one selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, and combinations thereof.

The anionic surfactant includes sulfate-based anionic surfactants, sulfonate-based anionic surfactants, and other anionic surfactants.

The sulfate-based anionic surfactant includes an alkyl sulfate, an alkyl-ester-sulfate, an alkyl ether sulfate, and an alkyl-ethoxy-ether-sulfate (alkyl-ethoxy). -ether-sulfate); sulfated alkanolamide; glyceride sulfate and the like may be included.

The sulfonate-based anionic surfactant includes hydrotropes; alpha-olefin sulfonates; lignosulfonate; A sulfo-carboxylic compound including sodium lauryl sulfoacetate may be included.

The other anionic surfactants include organo phosphored surfactants; It may include an alkyl amino acid including lauryl sarcosinate, sarcosine, and the like.

Examples of the nonionic surfactant include ethoxylated alcohol, fatty acid ester, and nitrogen-based nonionic surfactant.

The ethoxylated alcohol and the nonionic surfactant may include ethoxylated linear alcohol, ethoxylated thiol, and the like.

The fatty acid ester-based nonionic surfactant may include polyethoxy ester, glycerol ester, hexitol, cyclic anhydrohexitol ester, and the like.

The nitrogen-based nonionic surfactant includes ethoxylated amine, imidazole (cyclic alkyl-diamine), ethoxylated alkyl-amide, tertiary and tertiary amine oxide.

The surfactant is preferably included in an amount of 0.2 to 7 parts by weight, more preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the acrylic acid ester copolymer. When the surfactant is included in less than 0.2 parts by weight, there is a problem in reactivity during emulsion polymerization, and when it is included in more than 7 parts by weight, there is a problem in adhesion.

The flame retardant is used to impart flame retardant or flame retardant performance, and a brominated compound (eg, brominated epoxy resin), aluminum hydroxide, magnesium hydroxide, zinc sulfide and antimony compound (eg, trioxide) Antimony) may be at least one selected from the group consisting of. The flame retardant is preferably included in an amount of 1 to 30 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the pressure-sensitive adhesive. When the flame retardant is included within the above range, it is possible to improve the flame retardant performance without lowering the adhesive force.

The terpene-based resin and the rosin-based resin may be used to improve adhesion to an adherend to improve adhesion. The terpene-based resin may include terpene phenol, and the rosin-based resin may include a rosin ester. The terpene-based resin and the rosin-based resin are each independently included in an amount of 2 to 50 parts by weight, more preferably 3 to 30 parts by weight, based on 100 parts by weight of the pressure-sensitive adhesive. When the terpene-based resin and/or the rosin-based resin are included within the above range, adhesive strength may be improved without deterioration of flame retardant performance.

The pressure-sensitive adhesive layer may be formed to a thickness of 20 to 80 ㎛, preferably may be formed to a thickness of 40 to 70 ㎛. When the thickness range is satisfied, adhesive strength and flame retardant performance may be improved.

The remaining amount of water may be included in an amount such that the total weight of the pressure-sensitive adhesive is 100 parts by weight. Specifically, in the present invention, “residual amount” means a remaining amount such that the total weight of the pressure-sensitive adhesive including the essential components and other additional components is 100 parts by weight, and due to the meaning of the “residual amount”, additional components are added to the pressure-sensitive adhesive. It is not limited to not being included. For example, the water may be included in 20 to 60 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive, preferably 30 to 50 parts by weight, but is not limited thereto.

The release paper is located on the lower surface of the pressure-sensitive adhesive layer. For example, the release paper may be prepared by releasing a PET (Polyethylene terephthalate) sheet, a PE (Polyethylene) sheet, or a PVC sheet to facilitate peeling (separation) from the adherend. Specifically, the release paper may be a PET sheet, a PE sheet, a PVC sheet, or a release treatment by impregnating silicone with silicone or coating the paper with silicone.

< Manufacturing method of PVC adhesive flameproof panel >

The method for manufacturing a PVC adhesive flame retardant panel according to the present invention comprises the steps of preparing a release paper; forming a pressure-sensitive adhesive layer by applying an adhesive containing an acrylic acid ester copolymer and a surfactant on the release paper; and adhering the PVC panel on the pressure-sensitive adhesive layer.

In the method for manufacturing a PVC adhesive flame retardant panel according to the present invention, all of the contents described for the PVC adhesive flame retardant panel can be applied, and detailed descriptions are omitted for overlapping parts, but the description is omitted. However, the same can be applied.

The thickness of the PVC panel may be 0.5mm to 3mm, and the thickness of the pressure-sensitive adhesive layer may be 10㎛ to 80㎛. When the thickness of the PVC panel and the pressure-sensitive adhesive layer is out of the above range, a problem of adhesive strength may occur.

Hereinafter, the present invention will be described in more detail through examples. However, the following examples are provided to explain the present invention in more detail, and the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.

Example 1: Preparation of a pressure-sensitive adhesive

A pressure-sensitive adhesive according to Example 1 was prepared by reacting 55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, and 42 parts by weight of water at 80° C. for 6 hours with stirring. did.

Example 2: Preparation of a pressure-sensitive adhesive

A pressure-sensitive adhesive according to Example 2 was prepared by reacting 55 parts by weight of an ethylhexyl acrylate copolymer as an acrylic acid ester copolymer, 5 parts by weight of a sulfonate-based anionic surfactant as a surfactant, and 40 parts by weight of water at 80° C. for 6 hours with stirring. did.

Example 3: Preparation of a pressure-sensitive adhesive

55 parts by weight of butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 20 parts by weight of aluminum hydroxide as a flame retardant, and 42 parts by weight of water at 80° C. for 6 hours with stirring. An adhesive according to Example 3 was prepared.

Example 4: Preparation of a pressure-sensitive adhesive

55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 5 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 20 parts by weight of magnesium hydroxide as a flame retardant, and 40 parts by weight of water at 80° C. for 6 hours with stirring. A pressure-sensitive adhesive according to Example 4 was prepared.

Example 5: Preparation of a pressure-sensitive adhesive

55 parts by weight of butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 10 parts by weight of zinc sulfide as a flame retardant, and 42 parts by weight of water at 80° C. A pressure-sensitive adhesive according to Example 5 was prepared.

Example 6: Preparation of a pressure-sensitive adhesive

55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 10 parts by weight of antimony trioxide as a flame retardant, and 42 parts by weight of water at 80° C. for 6 hours with stirring. A pressure-sensitive adhesive according to Example 6 was prepared.

Example 7: Preparation of a pressure-sensitive adhesive

55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 6 parts by weight of a brominated epoxy resin as a flame retardant, and 46 parts by weight of water at 80° C. for 6 hours with stirring. An adhesive according to Example 7 was prepared.

Example 8: Preparation of a pressure-sensitive adhesive

55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 6 parts by weight of a brominated epoxy resin and 5 parts by weight of a terpene-based resin as a flame retardant, and 46 parts by weight of water at 80° C. The pressure-sensitive adhesive according to Example 8 was prepared by reacting with stirring for 6 hours.

Example 9: Preparation of a pressure-sensitive adhesive

55 parts by weight of a butyl acrylate copolymer as an acrylic acid ester copolymer, 3 parts by weight of a sulfonate-based anionic surfactant as a surfactant, 6 parts by weight of a brominated epoxy resin as a flame retardant, 5 parts by weight of a rosin-based resin, and 46 parts by weight of water at 80° C. The pressure-sensitive adhesive according to Example 9 was prepared by reacting with stirring for 6 hours.

Preparation Example: Preparation of PVC adhesive flame retardant panel

The adhesive according to Examples 1 to 9 is applied on a release paper (PE white paper) to form an adhesive layer with a thickness of 20 to 80 microns, and a PVC (Polyvinyl chloride) panel is adhered on the adhesive layer to adhere to PVC with a thickness of 1.2 mm A food-proof panel was prepared.

Test Example: Evaluation of flame-retardant performance of PVC adhesive flame-retardant panel

With respect to the PVC adhesive flame retardant panel manufactured above, based on Article 7 (flame retardant performance evaluation test) and Article 8 (smoke density test) of the Ministry of Public Safety and Security Notice No. According to the test standards of each repeated three times to evaluate the flame retardant performance, the results are shown in Table 1 below.

Measures Flame-retardant performance
standard Example One 2 3 4 5 6 7 8 9 Afterflame time (sec) 5 seconds or less 1.8 2.0 0 0 1.1 3.6 0 0 1.5 remaining time (seconds) 20 seconds or less 7 12 2.6 3.3 11 12 0 3.4 3.6 Carbonization length (cm) 20 cm or less 13.3 15.2 16.5 15 14.7 17.3 13.5 13.5 15 Carbonization area (cm ² ) 40 cm ² or less 34.7 36.5 38.5 38.3 38.6 38.3 34.3 34.6 34.1 smoke density 400 or less 277.1 347.7 311.1 336.4 264.5 233.3 258.8 321.2 313.0

Referring to Table 1, in the case of the flame-retardant panel containing the pressure-sensitive adhesive of Examples 1 to 9 according to the present invention, the flame-retardant performance standards were all satisfied in after-flame time, after-life time, carbonization length, carbonization area, and smoke density. Accordingly, it was confirmed that the adhesive according to the present invention had excellent flame retardancy. In addition, when a brominated epoxy resin, which is a flame retardant, was used as an additive, the best flame retardant performance was exhibited.

1: PVC panel
2: adhesive layer
3: Lee Hyungji

Claims (9)

PVC (Polyvinyl chloride) panel;
a pressure-sensitive adhesive layer disposed on the lower surface of the PVC panel and comprising an acrylic acid ester copolymer and a surfactant; and
a release paper disposed on the lower surface of the pressure-sensitive adhesive layer;
Including, PVC adhesive flame retardant panel.
The method according to claim 1,
The acrylic acid ester copolymer comprises an acrylate monomer, PVC adhesive flame retardant panel.
3. The method according to claim 2,
The acrylate monomer is at least one selected from the group consisting of butyl acrylate and ethylhexyl acrylate, PVC adhesive flame retardant panel.
The method according to claim 1,
The surfactant is an anionic surfactant, a nonionic surfactant, and a reactive anionic surfactant, and any one selected from the group consisting of a combination thereof, PVC adhesive flame retardant panel.
5. The method according to claim 4,
The surfactant does not contain an alkylphenol ethoxylate, PVC adhesive flame retardant panel.
The method according to claim 1,
The pressure-sensitive adhesive layer further comprises at least one selected from the group consisting of a flame retardant, a terpene-based resin and a rosin-based resin, PVC adhesive flame-resistant panel.
7. The method of claim 6,
The flame retardant is at least one selected from the group consisting of a bromine-based compound, aluminum hydroxide, magnesium hydroxide, zinc sulfide, and an antimony-based compound, PVC adhesive flame retardant panel.
The method according to claim 1,
The release paper is a PET (Polyethylene terephthalate) sheet, PE (Polyethylene) sheet, PVC sheet or paper impregnated in silicone or coated with silicone to release treatment, PVC adhesive flame retardant panel.
preparing a release paper;
forming a pressure-sensitive adhesive layer by applying an adhesive comprising an acrylic acid ester copolymer and a surfactant on the release paper; and
Adhering the PVC panel on the pressure-sensitive adhesive layer; Method for producing a PVC adhesive flame-retardant panel comprising a.

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