KR102306270B1 - Method for producing two-component flame retardant adhesive with flame retardant properties - Google Patents

Abstract

The present invention relates to a method for manufacturing a two-component flame-retardant adhesive having flame-retardant properties, which is applied to various building materials requiring flame-retardant and flame-retardant properties, including fire doors, and is configured to maintain adhesive force for a long time when fixing members to each other. do.

Description

Method for producing a two-component flame retardant adhesive with flame retardant properties having flame retardant properties

The present invention relates to a method for manufacturing a two-component flame-retardant adhesive having flame-retardant properties, and more particularly, it is applied to various building materials that require flame retardancy and flame retardancy, including fire doors, to provide adhesive strength for a long time when fixing members to each other. It relates to a method for producing a two-component flame-retardant adhesive having excellent flame-retardant properties to be maintained.

In general, a fire-proof door is installed in a building to prevent external thermal power from penetrating into the interior through the door.

Recently, fire doors have been installed in elevators moving up and down along the hoistway inside a building to protect passengers and prevent the spread of fire. In many cases, a flame retardant is required.

A reinforcing plate or a reinforcing bar is attached to such a fire door. In the past, it was attached using welding or an adhesive, but since the welding leaves traces and the adhesive takes a lot of time to cure, an adhesive tape is recently used. By attaching this, it does not leave traces on the joint site, shortens the working time, and has been attaching fire doors, reinforcing plates, and reinforcing bars.

However, since the conventional adhesive tape has a problem that it does not have flame retardant and flame retardant performance, by forming an adhesive layer coated with flame-retardant acrylic or silicone adhesive on both sides of the base layer, the conventional adhesive for fire doors that is non-flammable in case of fire The tape has been developed and has been applied and registered as Korean Patent Publication No. 10-0924320.

However, the adhesive tape for fire doors lacks flame retardant and flame retardant performance, so sparks may be generated and spread when a fire occurs, adhesive strength and holding power are not good, toxic gas is generated, and the effect of blocking noise and vibration is small. there is

In addition, although the adhesive tape for the fire door is described as forming an adhesive layer coated at a time, the thickness of the adhesive layer coating film should be at least 200 μm or more in order to obtain the maximum effect of flame retardancy and flame retardancy. It is very difficult to form a coating of an adhesive layer having

In view of these points, the present applicant has applied for and registered a patent for a flame-retardant adhesive tape (Patent Application No. 10-2012-0043729) having excellent flame retardancy having a double adhesive layer.

Looking at it, the conventional flame retardant adhesive tape having excellent flame retardancy having a double adhesive layer is made of a non-combustible material, a base layer formed to a thickness of 150 to 250 μm, and antimony trioxide (Sb2O3) as a flame retardant on both sides of the base layer and An acrylic adhesive in which decabromodiphenylethane (DBDPE) is mixed with 100 to 140 parts by weight per 100 parts by weight of an acrylic resin is applied to form a first adhesive layer having a thickness of 100 to 150 μm, and an acrylic adhesive on the outer surface of the first adhesive layer 1 to 10 parts by weight of expanded graphite per 100 parts by weight of the resin, antimony trioxide (Sb2O3) and decabromodiphenyl ether (DBDPE) as flame retardants 60 to 100 parts by weight per 100 parts by weight of the acrylic resin. A second adhesive layer formed to a thickness of 150 μm and a release layer formed on the outer surface of at least one of the second adhesive layers respectively formed on both sides, wherein the total thickness of the tape is 600 to 800 μm, thereby providing vibration and noise prevention effects together It is characterized by having.

However, in the conventional flame-retardant adhesive tape having excellent flame retardancy having a conventional double adhesive layer configured as described above, a phenomenon in which the adhesive falls from the base layer over time occurs and noise is generated due to collision between members.

Patent Application No. 10-2012-0043729, filed; April 26, 2012

Accordingly, the present invention has been devised to solve the above problems, and is applied to various building materials that require flame retardancy and flame retardancy, including fire doors, to maintain adhesive force for a long time when the members are fixedly attached to each other. An object of the present invention is to provide a method for manufacturing a two-component flame-retardant adhesive having excellent flame retardant properties.

Other objects of the present invention will become apparent as the technology progresses.

The method for producing a two-component flame-retardant adhesive having flame-retardant properties of the present invention for achieving the above object is to dissolve milled rubber by putting it in an acrylic molten monomer, and then performing a curing reaction with a polymerization inhibitor that suppresses self-reaction upon dissolution. A catalyst for preparing a first flame-retardant acrylic adhesive material by sequentially introducing a flame retardant catalyst and a flame retardant for flame retardancy, and the first flame-retardant acrylic adhesive material prepared by the first flame-retardant acrylic adhesive material preparation step when mixed with the catalyst A second flame-retardant acrylic adhesive material manufacturing step for preparing a second flame-retardant acrylic adhesive material by sequentially introducing a flame retardant for an accelerator and flame retardant after dissolving the milled rubber into an acrylic molten monomer to cause a reaction with and a mixing step of mixing the first flame-retardant acrylic adhesive material made by the first flame-retardant acrylic adhesive material production step and the second flame-retardant acrylic adhesive material production step made by the second flame-retardant acrylic adhesive material production step before use characterized in that

In addition, in the first flame-retardant acrylic adhesive material manufacturing step, the second flame-retardant acrylic adhesive material manufacturing step is made by the second flame-retardant acrylic adhesive material manufacturing step and mixed by the mixing step to have a flame retardant property. To make a flame-retardant adhesive, a first milling step for milling by putting silica and paraffin wax into a milling machine to cut the molecular weight of rubber, and a material made by the first milling step for dissolving the acrylic molten monomer The first dissolution step and the step of injecting a catalyst for the curing reaction of the adhesive when used as an adhesive through the material dissolved by the first dissolving step, and the material made by the catalyst input step can secure storage properties It is characterized in that it consists of a step of inputting a polymerization inhibitor so that the polymerization inhibitor is added, and a first flame retardant input step of injecting a flame retardant into the material made by the polymerization inhibitor input step.

And, the second step of preparing the material for the flame-retardant acrylic adhesive is a second milling step for milling by putting silica and paraffin wax in a milling machine to cut the molecular weight of rubber, and the material made by the second milling step A second dissolution step for dissolving the acrylic monomer by introducing it into the acrylic monomer, and adding an accelerator to the material dissolved by the second dissolving step to cause a reaction with the catalyst when mixed with the first flame-retardant acrylic adhesive material; It is characterized in that it is composed of a second flame retardant input step for inputting a flame retardant to suppress combustion in the material made by the accelerator input step.

As described above, according to the method for manufacturing a two-component flame-retardant adhesive having a flame-retardant property according to the present invention, the two-component flame-retardant adhesive having the flame-retardant property is applied to one side and the other surface of the reinforcing bar interposed between the front and rear plates of the fire door. After this, the attachment of the reinforcing bar is completed by attaching the front and rear plates to both sides of the applied reinforcing bar, so the operation can be made easier and faster than when attaching using a conventional adhesive tape, and the direct reinforcing bar , Since it is attached to the back plate through an adhesive, there is an effect that the attachment time of the reinforcing bar can be maintained for a longer time than when attached using an adhesive tape.

1 is a flowchart for explaining a method of manufacturing a two-component flame-retardant adhesive having a flame retardant property according to the present invention.

Hereinafter, an embodiment of the method for manufacturing a two-component flame-retardant adhesive having a flame retardant property according to the present invention will be described in detail.

First, it should be noted that in the drawings, the same components or parts are denoted by the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted so as not to obscure the gist of the present invention.

As shown, in the method for producing a two-component flame-retardant adhesive having flame retardant properties according to the present invention, milled rubber is added to acrylic molten monomer to dissolve, and then for curing reaction with a polymerization inhibitor that suppresses self-reaction upon dissolution. The first flame-retardant acrylic adhesive made by the step (S110) for preparing a material for the first flame-retardant acrylic adhesive by sequentially introducing a catalyst and a flame retardant for flame retardancy, and the first flame-retardant acrylic adhesive for the material production step (S110) A second flame-retardant acrylic adhesive for preparing a second flame-retardant acrylic adhesive material by sequentially introducing a flame retardant for an accelerator and flame retardant after dissolving the milled rubber into an acrylic molten monomer to cause a reaction with the catalyst when mixed with the material Made by the first flame-retardant acrylic adhesive material manufacturing step (S120) and the first flame-retardant acrylic adhesive material manufacturing step (S110), and the second flame-retardant acrylic adhesive material manufacturing step (S120) A mixing step (S130) of mixing the second flame-retardant acrylic adhesive material in a ratio of 3:7 to 7:3 before use so that the adhesive strength can be maintained is included.

Here, the first step (S110) of preparing the material for the first flame-retardant acrylic adhesive is a first milling step (S111) for milling by putting silica and paraffin wax in a milling machine to cut the molecular weight of rubber, and A first dissolving step (S112) for dissolving the material made by the first milling step (S111) by putting it into an acrylic molten monomer (S112), and an adhesive through the material dissolved by the first dissolving step (S112) A step (S113) of introducing a catalyst for the curing reaction of the adhesive when manufactured with the step (S113), and a step of adding a polymerization inhibitor to ensure storage properties in the material made by the catalyst input step (S113) (S114) and , a first flame retardant input step (S115) of injecting a flame retardant into the material made by the polymerization inhibitor input step (S114).

In addition, in order to distinguish the material made by the first flame retardant input step (S115) from the second flame retardant acrylic adhesive material made by the second flame retardant acrylic adhesive material manufacturing step (S120), for example, green The first flame retardant input step (S115) is configured to further include a pigment input step (S116) for inputting 0.1 to 1% with respect to 100% of the material made by the step (S115).

The second manufacturing step (S120) of the material for the second flame-retardant acrylic adhesive is a second milling step (S121) for milling by putting silica and paraffin wax in a milling machine to cut the molecular weight of rubber, and the second A second dissolving step (S122) for dissolving the material made by the milling step (S121) by putting it into an acrylic monomer, and the first flame-retardant acrylic system in the material dissolved by the second dissolving step (S122) A second flame retardant input step (S123) of injecting an accelerator to cause a reaction with the catalyst when mixed with an adhesive material, and a second flame retardant input step (S123) for injecting a flame retardant to the material made by the accelerator input step (S123) S124).

Hereinafter, a method of manufacturing a two-component flame-retardant adhesive having a flame retardant property according to the present invention will be described in more detail with reference to the accompanying drawings FIG. 1 .

First, in the method for manufacturing a two-component flame-retardant adhesive having flame retardant properties according to the present invention, the first milling step (S111) of the first flame-retardant acrylic adhesive material manufacturing step (S110) is made of rubber It is a step for cutting the molecular weight of the rubber by putting it in a milling machine together with and paraffin wax and milling it.

Here, in the first milling step (S111), the amount of silica and paraffin wax to be added is 1 to 10 kg and 0.1 to 0.5 kg with respect to 100 kg of rubber.

On the other hand, when the input amount of silica is 1 kg or less, when the rubber is milled through a milling machine, the molecular weight of the rubber is not cut, and when more than 10 kg is added, the adhesive strength is lowered. Likewise, it is preferable to input 1 to 10 kg with respect to 100 kg of rubber.

In addition, when the amount of the paraffin wax added is 0.1 kg or less, the surface air barrier film of the adhesive cannot be formed and surface uncured occurs. Likewise, it is preferable to input 0.1 to 0.5 kg with respect to 100 kg of rubber.

The first dissolving step (S112) is a step of dissolving the material made by the first milling step (S111) by putting it into an acrylic molten monomer (Acryl Momomer).

At this time, the ratio of the acrylic molten monomer to the material made by the first milling step (S111) is 6:4 to 8:2.

Here, the acrylic molten monomer (Acryl Momomer) is composed of MMA and 2-HEMA, and their mixing ratio is mixed in a ratio of 1:1 for heat resistance and adhesive strength reinforcement.

On the other hand, when the ratio of the acrylic molten monomer to the material made by the first milling step (S111) is out of the range of 6:4 to 8:2, the viscosity due to the production of the adhesive is high, so that it can be used as an adhesive. It is difficult to use, or the viscosity of the adhesive is too low and the elasticity is reduced, so the ratio of the acrylic molten monomer to the material made by the first milling step (S111) is 6:4-8. It is preferable to configure :2.

The above-described catalyst input step (S113) is prepared as an adhesive through the material dissolved by the first dissolving step (S112), and the catalyst is added to the material dissolved by the dissolving step (S112) for the curing reaction of the adhesive when used is a step to

At this time, the input amount of the catalyst is 2-8% with respect to 100% of the material dissolved by the first dissolving step (S112).

On the other hand, if the input amount of the catalyst is 2% or less with respect to 100% of the material dissolved by the first dissolving step (S112), it is manufactured as an adhesive and the curing reaction is delayed when used, and the input amount is 8% or more In this case, since it is manufactured with an adhesive and a curing reaction occurs before operation when used, the catalyst input in the catalyst input step (S113) is preferably 2 to 8% with respect to 100% of the material dissolved by the first dissolving step. do.

The above-described polymerization inhibitor input step (S114) is a step of adding a polymerization agent to the material made by the catalyst input step (S113) to secure storage properties.

Here, the polymerization inhibitor is composed of PBQ and BHT, and the amount of the polymerization inhibitor, PBQ and BHT, is 0.1 to 0.5% and 1 to 5% with respect to 100% of the material made by the catalyst input step (S113). put in

On the other hand, when the amounts of PBQ and BHT, which are polymerization inhibitors, are added at 0.1% and 1% or less, storage safety is deteriorated. Therefore, it is preferable that the input amounts of the polymerization inhibitors PBQ and BHT are 0.1 to 0.5% and 1 to 5% based on 100% of the material made by the catalyst input step (S113).

The first flame retardant input step (S115) is a step of adding a flame retardant to the material made by the polymerization inhibitor input step (S114) to suppress combustion.

Here, the flame retardant is composed of DBDPE (DECABROMODIPHENYL ETHANE; decapbromodylphenyl ether), and is added in an amount of 60 to 80% based on 100% of the material made by the polymerization inhibitor input step.

On the other hand, the input of the above-described flame retardant is difficult when 60% or less is added with respect to 100% of the material made by the polymerization inhibitor input step (S114), and when it is added at 80% or more, the adhesive strength when used Since this falls, the input of the flame retardant is preferably 60 to 80% with respect to 100% of the material made by the polymerization inhibitor input step (S114).

The second milling step (S121) and the second dissolving step (S122) of the second flame-retardant acrylic adhesive material manufacturing step (S120) is the first milling of the first flame-retardant acrylic adhesive material manufacturing step (S110) In the same steps as the step (S111) and the first dissolving step (S112), a detailed description will be omitted below, and the accelerator input step (S123) will be described below.

The accelerator input step (S123) is a step of adding the accelerator to the material dissolved by the second dissolving step (S122) so that a reaction with the catalyst occurs when mixed with the first flame-retardant acrylic adhesive material.

Here, the accelerator is ethylene thiourea (ETU; ethylene thiourea), and is added in an amount of 0.5 to 2% based on 100% of the material dissolved by the dissolution step.

On the other hand, when the input of the accelerator is 0.5% or less with respect to 100% of the material dissolved by the second dissolving step (S122), it is prepared as an electrodepositing agent and the curing reaction is delayed when used, and added at 2% or more Since it is manufactured with an adhesive and a curing reaction occurs before operation when used, the accelerator input in the accelerator input step (S123) is preferably added in an amount of 0.5 to 2% based on 100% of the material dissolved by the dissolution step (S122). do.

The second flame retardant input step (S124) is a step of inputting a flame retardant to the material made by the accelerator input step (S123) to suppress combustion.

Here, the flame retardant is composed of DBDPE (DECABROMODIPHENYL ETHANE; decapbromodylphenyl ether), and is added in an amount of 60 to 80% with respect to 100% of the material made by the accelerator input step (S123).

On the other hand, the input of the above-described flame retardant is difficult to flame retardant when input is 60% or less with respect to 100% of the material made by the accelerator input step (S123), and when it is added to 80% or more, the adhesive strength is reduced when used Therefore, the input of the flame retardant is preferably 60 to 80% with respect to 100% of the material made by the accelerator input step (S123).

If you want to manufacture a two-component flame-retardant adhesive having flame retardant properties according to the present invention configured as described above, first, 100 kg of rubber, 5 kg of silica and 0.5 kg of paraffin wax are added to the milling machine as shown in the accompanying drawings and FIG. to be milled.

The material made by milling through a milling machine as described above is put into an acrylic molten monomer composed of MMA and 2-HEMA mixed in a ratio of 1:1.

At this time, the ratio of the acrylic molten monomer (Acryl Momomer) and the material made by milling through a milling machine is added so that the ratio is 7:3 and dissolved.

When the material made by milling as described above is dissolved in acrylic molten monomer (Acryl Momomer), 4% of a catalyst, for example, CHP (Cumene Hydro Peroxide) is added to 100% of the dissolved material to make a material in which the catalyst is added.

When the catalyst-injected material is prepared as described above, 0.2% of PBQ and 2% of BHT, which is a polymerization inhibitor, are added to 100% of the prepared material to make a material in which the polymerization inhibitor is added.

When the material to which the polymerization inhibitor is added is prepared as described above, 70% of DBDPE, a flame retardant, is added to 100% of the prepared material to make the material in which the flame retardant is added.

When the flame retardant is prepared as described above, 0.5% of the green pigment is added to 100% of the prepared material to prepare a first flame retardant acrylic adhesive material.

When the preparation of the first flame-retardant acrylic adhesive material is completed as described above, 100 kg of rubber, 5 kg of silica, and 0.5 kg of paraffin wax are put into a milling machine to prepare the second flame-retardant acrylic adhesive material, and milled, The milled material is dissolved by putting it in a ratio of 7:3 to acrylic molten monomer composed of MMA and 2-HEMA mixed in a ratio of 1:1.

When the material made by milling as described above is dissolved in acrylic molten monomer (Acryl Momomer), ethylene thiourea (ETU; ethylene thiourea), an accelerator, is added to 100% of the dissolved material at 1% with respect to 100% of the dissolved material. Creates a substance that has been injected with an accelerator.

When the accelerator-injected material is prepared as described above, 70% of DBDPE, a flame retardant, is added to 100% of the produced material, and the flame retardant is added to prepare a second flame-retardant acrylic adhesive material.

By mixing the prepared first flame-retardant acrylic adhesive material and the second flame-retardant acrylic adhesive material in a ratio of 5:5, the production of a two-component flame-retardant adhesive having flame retardant properties is completed.

The use of the two-component flame-retardant adhesive having the flame-retardant properties prepared as described above is to apply the two-component flame-retardant adhesive having the flame-retardant properties to one side and the other side of the reinforcing bar interposed between the front and rear plates of the fire door, and then The attachment of the reinforcing bar is completed by attaching the front and back plates to both sides, so the work can be done more easily and quickly than when attaching using a conventional adhesive tape, and the reinforcing bar directly mediates the adhesive to the front and back boards. Since it is attached with an adhesive tape, the attachment time of the reinforcing bar can be maintained longer than when attaching it using an adhesive tape.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (4)

A method for producing a two-component flame-retardant adhesive having flame retardant properties,
After the milled rubber is put into the acrylic molten monomer and dissolved, a polymerization inhibitor that suppresses its own reaction upon dissolution, a catalyst for curing reaction, and a flame retardant for flame retardancy are sequentially added to prepare a first flame-retardant acrylic adhesive material a step (S110) for;
When mixed with the first flame-retardant acrylic adhesive material made by the first flame-retardant acrylic adhesive material manufacturing step (S110), the milled rubber is put into the acrylic melt monomer to cause a reaction with the catalyst, and then the accelerator and the flame retardant are added A second flame-retardant acrylic adhesive material manufacturing step (S120) for producing a second flame-retardant acrylic adhesive material by sequentially introducing a flame retardant for the purpose;
The first flame-retardant acrylic adhesive material prepared by the manufacturing step (S110) of the first flame-retardant acrylic adhesive material and the second flame-retardant acrylic adhesive material made by the second flame-retardant acrylic adhesive material manufacturing step (S120) Adhesive strength A mixing step (S130) of mixing before use in a ratio of 3:7 to 7:3 to maintain
A method for producing a two-component flame-retardant adhesive having flame retardant properties, comprising:
According to claim 1,
The first flame-retardant acrylic adhesive material manufacturing step (S110),
To make a two-component flame-retardant adhesive having flame retardant properties by mixing the second flame-retardant acrylic adhesive material made by the second flame-retardant acrylic adhesive material manufacturing step (S120) and the mixing step (S130), the molecular weight of the rubber A first milling step (S111) for milling by putting silica and paraffin wax into a milling machine for cutting, and a first dissolving step for dissolving the material made by the first milling step (S111) by introducing it into the acrylic molten monomer (S112) and the step (S113) of injecting a catalyst for the curing reaction of the adhesive when it is prepared as an adhesive through the material dissolved by the first dissolving step (S112) and used (S113), and the catalyst input step (S113) A first flame retardant input step (S115) of injecting a polymerization inhibitor into the material made by the polymerization inhibitor input step (S114) and injecting a flame retardant into the material made by the polymerization inhibitor input step (S114) to ensure storage properties in the produced material A method for producing a two-component flame-retardant adhesive having flame retardant properties, characterized in that.
3. The method of claim 1 or 2,
The second flame-retardant acrylic adhesive material manufacturing step (S120),
A second milling step (S121) for milling by putting silica and paraffin wax into a milling machine to cut the molecular weight of rubber, and a second milling step (S121) for dissolving the material made by the second milling step (S121) by putting it into the acrylic monomer 2 The dissolving step (S122) and the step of adding an accelerator to the material dissolved by the second dissolving step (S122) to cause a reaction with the catalyst when mixed with the first flame-retardant acrylic adhesive material (S123), A method of manufacturing a two-component flame-retardant adhesive having flame retardant properties, characterized in that it comprises a second flame retardant input step (S124) for inputting a flame retardant to the material made by the accelerator input step (S123) to suppress combustion.
4. The method of claim 3,
Pigment input for inputting a green pigment to the material made by the first flame retardant input step (S115) to be distinguished from the second flame retardant acrylic adhesive material made by the second flame retardant acrylic adhesive material production step (S120) A method of manufacturing a two-component flame-retardant adhesive having flame-retardant properties, characterized in that it further comprises a step (S116).

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