KR20100056925A - Adhesive composition for mat having excellent adhesion and crosslinkable - Google Patents

Abstract

PURPOSE: An adhesive composition for a mat is provided to obtain fast hardening rate and excellent adhesive strength without influence of temperature and humidity and to improve productivity of the mat. CONSTITUTION: An adhesive composition for a mat comprises a main material and a hardener. The main material comprises chloroprene rubber 40~60 parts by weight, additive 5~15 parts by weight, adhesion reinforcing agent 25~45 parts by weight, and solvent 50~300 parts by weight. The hardener is included in the amount of 10~30 parts by weight. The chloroprene rubber has mooney viscosity of 15~70.

Description

Adhesive composition for mat having excellent adhesion and crosslinkability {ADHESIVE COMPOSITION FOR MAT HAVING EXCELLENT ADHESION AND CROSSLINKABLE}

The present invention is an adhesive composition whose main component is an chloroprene rubber used for bonding ceramic stones to uppers or cloths suitable for manufactured products when manufacturing cushions, sheets, mats, etc., including ceramic stones, and having excellent curing speed and adhesive strength. It is related with the adhesive agent for mat.

Most of heating mats currently in circulation in Korea are heat generating effects and ceramic heating mats that emit far infrared rays from ceramics attached to the mats.They display a separate pattern on the mats as a method for adhering ceramic stones on the mats. After a certain amount of time after applying the adhesive of the ceramic to the mat by using a method of bonding the ceramic stone to the mat is manufactured.

As described above, there is no patent for a dedicated adhesive used for attaching a ceramic to a mat, and as a method of manufacturing an jade mat, ceramics are arranged in a mat in Korean Patent Application Publication No. 2003-0069745. There is a known method of fixing a ceramic by padding a flow preventing plate and adhering an adhesive sheet, and adding a covering sheet in the form of a mesh to the top plate of the mat in Korean Patent No. 10-0361335 as an jade intervening method. It is known to form a space for accommodating the mat by sealing the top plate and a portion of the cover paper in a zigzag shape.

However, the methods of the above patents are complicated manufacturing process and all processes are manual processes using manpower, which leads to a decrease in output and a price increase, and the most commonly used method is an adhesive method. However, current adhesives used by ceramic heating mat manufacturers are stone sealant (industrial) sealant, which is a one-component moisture-curable type of acetic acid-free ceramic core series, which takes a very long time to cure in low humidity and low temperature. As the oxime used for the sealant is lowered and it is known to be harmful to the human body and cause environmental problems, the development of an adhesive for mats is urgently needed because it is a substance designated as a regulatory target in developed countries such as Europe.

Therefore, the present invention was invented to solve various problems of the stone sealant, which was used as a conventional adhesive for mat as described above. In particular, it is not affected by temperature and humidity, and thus the curing speed is high and the adhesion, crosslinkability and workability are An object of the present invention is to provide an adhesive composition for mat, which is excellent in that productivity can be improved.

In the present invention for solving the above problems, in the adhesive composition for mat consisting of the main agent and the curing agent,

The main material consists of 40 to 60 parts by weight of chloroprene-based rubber, 5 to 15 parts by weight of additives, 25 to 45 parts by weight of an adhesive enhancer, and 50 to 300 parts by weight of a solvent.

The said hardening | curing agent is 10-30 weight part, The adhesive composition for mat which has the outstanding adhesive force and crosslinkability is made into a problem solving means.

The adhesive agent for mat of the present invention by the above-mentioned problem solving means has an advantage that the productivity is improved due to the excellent curing rate and adhesion strength is not affected by the temperature and humidity when the ceramic is bonded to the mat.

The present invention for achieving the above effect is an adhesive composition for mat used for bonding the ceramic stone to the upper or cloth when producing a cushion, sheet, mat, etc. containing the ceramic stone, the adhesive composition for mat according to the present invention It should be noted that only parts necessary to understand the description will be omitted, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

Hereinafter, the present invention will be described in more detail for each component of the adhesive composition for a mat.

 The present invention is an adhesive composition for a mat composed of a main agent and a curing agent, wherein the main agent is composed of 40 to 60 parts by weight of chloroprene-based rubber and 5 to 15 parts by weight of additives, 25 to 45 parts by weight of an adhesive enhancer and 50 to 300 parts by weight of a solvent. , The curing agent is characterized in that 10 to 30 parts by weight.

In the present invention, it is preferable to use 40 to 60 parts by weight of chloroprene-based rubber, when the content of the chloroprene-based rubber is less than 40 parts by weight, the workability is good but the cohesive force is lowered and the repulsive elasticity is lowered to reduce the adhesive force If the content of the chloroprene rubber exceeds 60 parts by weight, the molecular weight of the adhesive is increased to increase the mechanical properties such as tensile strength and rebound elasticity, while the compressive permanent deformation is increased, resulting in a decrease in processability.

In addition, the chloroprene rubber used in the present invention preferably has a Mooney viscosity of 15 to 70, and may be used alone or in combination. The chloroprene rubber may be used alone among species containing acetylene as a starting material and species containing butadiene as a starting material. Or it can use together.

In the present invention, the additive is a metal oxide such as titanium diceramic, aluminum ceramic, magnesium ceramic, zinc oxide, iron oxide and sila such as zeosil-155, zeosil-175, aerosil-200 and aerosil-300. It may be used alone or in combination of two or more of the car (Degus Co.), can be used in the case of a product having a physical property equal to or higher than the products listed above when using silica of other companies' products. In addition, the content of the additive is preferably used 5 to 15 parts by weight, when the content of the additive is less than 5 parts by weight, there is a risk of low crystallinity due to the low crosslinking density, when the content of the additive exceeds 15 parts by weight of the solvent It does not dissolve well in, and there exists a possibility that especially solid content may become difficult to control.

And in the present invention, the adhesive enhancer may be used alone or in combination with a reactive terpene phenol resin or an alkyl phenol resin. In addition, the content of the adhesive enhancer is preferably 20 to 45 parts by weight, and if the content of the adhesive enhancer is less than 20 parts by weight, the thermal stability and adhesion may be reduced. There is a possibility that the cohesion force may decrease because of the low molecular weight in the composition.

And the solvent in the present invention used 50 to 300 parts by weight, which is preferably used to control the solid content and viscosity. Solvents usable in the present invention may be used by selecting one or more from the group consisting of toluene, xylene, methyl ethyl ketone, cyclohexane, normal hexane, ethyl acetate, acetone, methanol, ethanol, chloroform, pentane and the like. .

According to the present invention, the adhesive for mat having the above components should be used in combination with the curing agent in the subject matter.

It is preferable to use 10 to 30 parts by weight of an isocyanate-based curing agent as a conventional curing agent, and when the content of the curing agent is less than 10 parts by weight, the curing rate may be slow and the adhesive strength may decrease, and the content of the curing agent may be used. When it exceeds 30 parts by weight, the curing speed is high, the use time is shortened and workability may be deteriorated.

Hereinafter, the present invention will be described in detail with reference to Examples. However, the present invention is not necessarily limited to the following Examples.

1. Preparation of adhesive (topic) for mat

The subject matter of the adhesive for mats of Examples 1 to 4 and Comparative Examples 1 to 3 was prepared according to the content of component ratios in Table 1 below.

Example 1

Add 55 parts by weight of chloroprene rubber (A-120, DENKA) to the kneading equipment that can control the temperature and speed, and add 10 parts by weight of silica (aerosil-300, Degussa) for 5 to 20 minutes at a temperature of 60 ~ 110 ℃. After kneading for 1 hour, it was placed in a 1 L reactor and 20 parts by weight of a phenolic adhesive enhancer (A-100, Kolon Emulsifier), 15 parts by weight of reactive adhesive adjuvant (CKA-909, Kolon Emulsified), 100 parts by weight of solvent were added for 24 hours. Agitated to prepare the subject of the adhesive for mat excellent in drying rate and adhesive strength of 50% solids.

Example 2

55 parts by weight of chloroprene rubber (A-120, DENKA), 10 parts by weight of silica (aerosil-300, Degussa), 15 parts by weight of phenolic resin adhesive adjuvant (A-100, Kolon Emulsifier) and phenolic resin adjuvant (CKA-909) , Kolon Emulsification) 10 parts by weight, solvent 90 parts by weight was prepared in the same manner as in Example 1 to prepare the subject of the adhesive for mat excellent in drying rate and adhesive strength of 50% solids.

Example 3

42 parts by weight of chloroprene rubber (A-120, DENKA), 8 parts by weight of silica (aerosil-300, Degussa), 30 parts by weight of phenolic resin adhesive adjuvant (A-100, Kolon Emulsifier) and phenolic resin adjuvant (CKA-909) , Kolon Emulsifier) 5 parts by weight, solvent 85 parts by weight was prepared in the same manner as in Example 1 to prepare the subject of the adhesive for mat excellent in drying rate and adhesive strength of 50% solids.

Example 4

60 parts by weight of chloroprene rubber (A-120, DENKA), 12 parts by weight of silica (aerosil-300, Degussa), 30 parts by weight of phenolic resin adhesive adjuvant (A-100, Kolon Emulsifier) and phenolic resin based adjuvant (CKA-909) , Kolon Emulsification) 10 parts by weight of the solvent, 112 parts by weight of the solvent was prepared in the same manner as in Example 1 with excellent drying rate and adhesive strength of 50% solids.

Comparative Example 1

Industrial sealant-SK, which is currently used as an adhesive for mats, was used.

Comparative Example 2

Silica (aerosil-300, Degussa) was used, and the mat adhesive was prepared by the same method as in Example 1, but the solvent was used to prepare the subject of the mat adhesive using only 90 parts by weight.

Comparative Example 3

A phenol resin adhesive adjuvant (CKA-909, Kolon Emulsifier) was not used, and the mat adhesive was prepared by the same method as Example 1, but the solvent was used to prepare the subject of the mat adhesive using only 85 parts by weight.

                                                      (Unit: parts by weight)
Ingredient Example Comparative example One 2 3 4 One 2 3 A-120 ¹⁾ 55 55 42 60 - 55 55 Aerosil-300 ²⁾ 10 10 8 12 - - 10 A-100 ³⁾ 20 15 30 30 - 20 20 CKA-909 ⁴⁾ 15 10 5 10 - 15 -  Toluene 100 90 85 112 - 90 85 Sealant-SK ⁵⁾ - - - - 100 - -

Note 1) A-120: DENKA

   2) Aerosil-300: Degussa

   3) A-100: Kolon Oil Co., Ltd.

          4) CKA-909: Kolon Oil Co., Ltd.

          5) Shin-Etsu Silicone

2. Evaluation of adhesive for mat

The mat adhesive prepared in Examples 1 to 4 and Comparative Examples 1 to 3 were applied to the mat upper and the ceramic stone, and evaluated as follows. The results are shown in Table 2 below.

end. Mat upper and ceramic stone adhesion

15 weight part of hardening | curing agents (DRF: Dong Chemical Co., Ltd.) were mixed with respect to 100 weight part of prepared adhesive agents for mat, and it fully stirred. After applying about 1 g of the adhesive to the upper for the mat, the ceramic stone was coalesced by hand under the same conditions as the stone sealant, pressed and left to stand at room temperature. However, the sealant-SK of Comparative Example 1 was used alone as a moisture hardening adhesive to bond ceramic stones.

I. Peel strength evaluation

Since there is no standardized evaluation method for the adhesion of the mat upper and the ceramic stone, the adhesive force acting on one stone of hexagonal shape (4.5cm long and 3.5cm short) was tested using a universal tensile tester (UTM).

All. Cure Rate Evaluation

After adhering the mat upper and the ceramic stone, the adhesion evaluation was performed at intervals of 2 hours, and after 24 hours, it was expressed as a percentage compared to the adhesive strength value of the upper and the ceramic stone for the mat.

la. Productivity evaluation

The productivity was evaluated by evaluating the number of ceramic stones adhered to the mat per 300 g of the adhesive.

characteristic
Example Comparative example One 2 3 4 One 2 3 Peel strength ¹⁾
(kgf / ea, 24hr) Winter season 6 to 7 6 to 7 6.5 to 7.5 5.5-7.0 4 to 6 3 ~ 4 2.5 ~
3.5 Summer season 6.5-7.0 6.5-7.0 8.0 to 8.5 6.0-7.0 4 to 5 3.5 ~
4.0 3.0 ~
3.5

Cure Speed ²⁾
(%)

2hr 20 15 10 10 10 10 5 4hr 45 40 20 20 20 20 15 6hr 70 60 40 30 25 30 30 8hr 90 80 60 50 45 50 40 12hr 100 90 70 70 55 60 50 Productivity (ea / 300g) 580-620 560 to 600 540-570 530-550 400-450 500 ~
550 520 ~
550

Note 1) Assessed by 200 mm / min tensile speed, adhesive force acting on one stone of hexagon shape (4.5cm long, 3.5cm short)

   2) (Attack Time / 24 Hours) × 100

According to the contents of [Table 2], in the evaluation of the adhesive strength (Peel strength) of the winter and summer, Examples 1 to 4 were evaluated as superior to the adhesive strength compared to Byo Examples 1 to 3, the curing rate measured every 2 hours In Examples 1 to 3, the curing rate was faster than that of 1 to 3 in comparison.

Therefore, in the productivity evaluation, the productivity was evaluated as being excellent in the order of Examples 1 to 4 in proportion to the results of the adhesive force and the curing rate, all of them were evaluated as being superior to the Comparative Examples 1 to 3.

As described above, those skilled in the art will understand that the adhesive composition for a mat according to a preferred embodiment of the present invention can be variously changed and changed without departing from the technical spirit of the present invention.

Claims (4)

In the adhesive composition for a mat which consists of a main body and a hardening | curing agent, The main material consists of 40 to 60 parts by weight of chloroprene-based rubber, 5 to 15 parts by weight of additives, 25 to 45 parts by weight of an adhesive enhancer, and 50 to 300 parts by weight of a solvent. The curing agent is an adhesive composition for a mat having excellent adhesive strength and crosslinkability, characterized in that 10 to 30 parts by weight. The method of claim 1 The chloroprene rubber has a Mooney viscosity of 15 to 70, the adhesive composition for mat having excellent adhesion and crosslinkability. The method of claim 1, The additives include metal oxides titanium dioxide, aluminum ceramics, magnesium ceramics, zinc oxides, iron oxides and silicas such as zeosyl-155, zeosyl-175, aerosil-200 and aerosil-300. An adhesive composition for mat having excellent adhesive strength and crosslinkability, which is used alone or in combination of two or more kinds thereof. The method of claim 1, The adhesive enhancer is an adhesive composition for mat having excellent adhesion and crosslinkability, characterized in that to use a reactive terpene phenol-based resin or an alkylphenol-based resin alone or in combination.