KR19990058670A - Manufacturing method of resin composition for carpet tile - Google Patents

Abstract

The present invention relates to a method for producing a resin composition including an aqueous acrylic emulsion and an inorganic filler used as a backing material for a carpet tile, 100 parts by weight of the solid of the aqueous acrylic emulsion resin, 0 to 500 parts by weight of the non-aqueous inorganic filler, Method for producing an aqueous acrylic emulsion resin composition for tile carpet backing material which improves the dry hardening rate by mixing at least one of super fast cement, ultra hard cement, and a hydration accelerator with respect to a composition composed of 100 to 250 parts by weight of ordinary cement or back cement. It is characterized in that the addition of a compound capable of acting as a Lewis acid within 15 parts by weight as a retardant, it is possible to supplement the pot life while reducing the drying curing time.

Description

Manufacturing method of resin composition for carpet tile

The present invention relates to a method for preparing a resin composition including an aqueous acrylic emulsion and an inorganic filler used as a backing material for a carpet tile, and more particularly, to an aqueous inorganic filler using an additive such as glutamic acid to increase pot life. By suppressing the hydration reaction of cements), it is possible to produce a resin composition with extended pot life.

As a backing material for carpet tiles, asphalt-based and PVC-based materials are mainly used. As a result, asphalt-based odors are too stiff in winter, melt at high temperatures, and contaminate the environment. PVC-based waste incineration and In the event of fire, chlorine gas, a harmful gas, is released, causing various problems in terms of environment and safety.

Recently, a resin composition using an acrylic resin was developed as a method of compensating for these disadvantages (JP 05254081, USP 5332457, EP 0560325), and in the case of the resin composition, the non-hydraulic inorganic filler was prepared based on 100 parts by weight of the aqueous acrylic emulsion resin. Although the method of preparing a resin composition for a backing material by mixing 100 to 400 parts by weight and 160 to 300 parts by weight of hydraulic inorganic cement is limited, the resin composition has a disadvantage in that productivity is reduced due to a long drying and curing time. In the case of the patent USP 5332457, the drying curing temperature is 130-155 ° C, but if the temperature is set to 160 ° C or higher in order to reduce the drying curing time, drying is faster, but it is difficult to use due to swelling or air bubbles. Falls, and after the tile carpet is installed, the phenomenon occurs that becomes difficult to use.

In addition, it is possible to reduce the water content, but in this case also has a disadvantage that the molding is impossible due to the high viscosity. In addition, in the case of domestic patent application (96-64249), which compensates for these shortcomings, the drying and curing time is shortened, but in both cases, the mixture is mixed with an aqueous acrylic emulsion and an inorganic filler because cement is added as a hydraulic inorganic filler. After that, the resin composition starts to harden due to the hydration reaction of cement, and the pot life is short due to the viscosity increase, making it difficult to store the resin composition during production and disposing of the resin composition that is not used immediately upon mixing.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a resin composition capable of extending the pot life while reducing the drying time.

The present invention is based on the composition consisting of 100 parts by weight of solid content of the aqueous acrylic emulsion resin, 0-500 parts by weight of the non-hydraulic inorganic filler, 100-250 parts by weight of ordinary cement or back cement, one of the super hard cement, ultra-small cement, hydration accelerator In the method for producing a backing material aqueous acrylic emulsion resin composition for a tile carpet in which the drying hardening rate is improved by mixing the above, a compound capable of acting as a Lewis acid as a retardant is added within 15 parts by weight.

Hereinafter, the present invention will be described in detail.

Alanine, serine, isoleucine, leucine, tyrosine, leuric acid, lysine in resin compositions used in the prior art (application number: 96-64249) Lewis acids such as Lysine, Arginine, Aspartic acid, Glutamic acid, Cystine, etc. Potlife can be controlled by adding a compound that can play a role.

Ordinary cements, which are hydraulic inorganic cements, or cemented carbides with high hydration reaction rates and hydration mechanisms, are not yet clearly known, but are generally described as follows. Here, it is known that aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ) and the like affect the hydration reaction.

Reactor

In this reaction mechanism, the addition of a compound capable of acting as Lewis acid such as the above-mentioned amino acid (hereinafter referred to as "delay agent"), etc., forms a chelate compound with aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ) and the like. Therefore, at room temperature, the action of delaying the hydration reaction of cement is extended to extend the pot life of the resin composition. However, when the mixed resin composition is put into a drying oven to be dried and strengthened at 150 ° C. or more, the chelate compound formed by combining with metal ions is decomposed and the hydration reaction of cement proceeds to produce a desired molding.

0-15 parts by weight of the retarder is added to the backing resin composition for tile carpet, based on 100 parts by weight of the solids of the emulsion resin, more preferably 2 to 5 parts by weight. If the amount of the retardant is less than this range, there is little effect of the retardant, and if it exceeds this range, the retardation effect is too great to increase the drying and curing time and affect the properties of the molding.

Hereinafter, the present invention will be described in more detail in Examples and Comparative Examples, but it should be understood that they do not limit the present invention.

Example A: Comparison of pot life of resin composition

The following compositions are mixed with the same resin compositions as in Comparative Examples to evaluate the pot life by investigating the time when the resin composition starts to harden and the viscosity rises sharply.

<Example 1>

-Aqueous acrylic emulsion resin

(57% solids content, glass transition temperature -22 ℃): 100 parts by weight (based on solids)

Back cement: 150 parts by weight

-Super hard cement: 30 parts by weight

-Defoamer: 1.5 parts by weight

-Dispersant: 1.5 parts by weight

Retardant (glutamic acid): 1.0 parts by weight

Water: 25 parts by weight

The resin composition having the above composition was mixed and degassed by stirring for about 30 minutes until no granules were visible, and then, the curing state was examined after a certain time by covering with a vinyl film to prevent drying due to moisture evaporation. The time when the resin composition started to harden was examined and the results are shown in Table 1 together.

<Examples 2 to 6>

Examples 2 to 6 were carried out in the same manner as in Example 1, the composition of the resin composition was mixed according to Table 1.

<Comparative Example 1-3>

Comparative Examples 1 to 3 were carried out in the same manner as in Example 1, but the resin composition was mixed according to the composition of Table 1 without adding a retarder.

Composition and Pot life of Resin Composition Example Comparative Example One 2 3 4 5 6 One 2 3 Furtherance emulsion 100 100 100 100 100 100 100 100 100 Plain cement 0 150 0 0 150 150 0 100 150 Back cement 150 0 150 150 0 0 150 0 Cemented carbide cement 30 30 30 20 20 0 30 50 20 Hydration accelerator 0 0 0 0 0 10 0 0 0 Calcium carbonate 100 120 100 100 100 120 100 100 150 Antifoam 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Dispersant 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 water 25 25 25 20 20 15 25 20 25 Retardant 1.0 1.5 1.5 2.5 3.0 2.0 0 0 0 Housework time 4hr 7hr 5.5hr 27hr 24hr 15hr 30 minutes 20 minutes 40 minutes

Example B: Comparison of Dry Curing Times of Resin Compositions

<Example 7>

1) Nylon BCF tufted carpet using polyester nonwoven fabric as primary foam material

2) Use fiberglass mesh as reinforcement

3) Preparation of backing material resin composition

-Aqueous acrylic emulsion resin

(57% solid content, glass transition temperature -22 ℃): 100 parts by weight

Back cement: 150 parts by weight

-Super hard cement: 30 parts by weight

Silica sand: 120 parts by weight

Hollow beads: 15 parts by weight

-Defoamer: 1.5 parts by weight

-Dispersant: 1.5 parts by weight

Retardant: 1.5 parts by weight

Water: 25 parts by weight

4) Mix the resin composition having the composition of 3) and stir for about 30 minutes until no granules are visible, and then defoaming on the teflon sheet to form a lower layer thickness of 2 mm to cover the reinforcing material and to form a backing layer with a thickness of 1.3 mm again. Tile carpet specimens covered with carpet fabric were pressed and dried at a temperature in Table 2 in a hot air oven to investigate the release and drying conditions. The state after drying was examined and the results are shown in Table 2 together.

<Examples 8-13>

Items 1) and 2) are the same as in Example 1, and the composition of item 3) is mixed according to the following Table 2, and other contents are not described according to Example 1. The results are shown in Table 2 together.

<Comparative Examples 4 to 6>

In each of the examples of the composition, the resin composition was prepared by slightly increasing the amount of back cement or ordinary cement without adding superhard cement and super steel cement hydration accelerator. Other 1), 2), 4) was prepared in the same manner as the tile carpet. The results of the composition and the dry state are shown in Table 1.

Comparison of Drying States of Resin Compositions Example Comparative Example 7 8 9 10 11 12 13 4 5 6 Furtherance emulsion 100 100 100 100 100 100 100 100 100 100 Plain cement 0 180 150 0 150 150 0 0 180 180 Back cement 150 0 0 150 0 0 150 180 0 0 Cemented carbide cement 30 30 20 0 0 0 15 0 0 0 Barb steel cement 0 0 0 40 25 0 10 0 0 0 Hydration accelerator 0 0 5 0 10 10 5 0 0 0 Calcium carbonate 0 100 120 100 100 0 0 0 100 0 Silica sand 120 0 0 0 0 120 120 120 0 120 Hollow Bead 15 25 15 20 20 20 20 20 40 15 Antifoam 1.5 1.5 1.5 2.0 2.0 1.5 1.5 1.5 1.5 1.5 Dispersant 1.5 1.5 1.5 1.5 1.5 2.0 2.0 2.0 2.0 2.0 Retardant 1.0 1.5 1.5 2.0 2.0 2.0 2.5 0 0 0 water 25 25 20 20 20 20 20 20 20 25 Drying temperature (℃) 150 170 120 170 170 150 170 170 120 170 Drying time (minutes) 15 12 25 15 13 20 15 25 60 30 Dry ○ ○ ○ ○ △ ○ △ ◇ ○ ×

(Circle): Both the dry state and the mold release state in a Teflon sheet are favorable.

(Triangle | delta): The dry state is favorable but partial release defect generate | occur | produces in a Teflon sheet

◇: Undried, impossible to release

×: Bubbles are severe or lifting occurs

Backing material resin composition for tile carpet using water-based acrylic resin emulsion has been recently developed as an alternative material to compensate for disadvantages (harmful gas emission, environmental pollution, etc.) and PVC or asphalt backing agent, which is widely used. Due to the long drying time, the productivity is lowered, or the resin composition starts to harden, and the pot life is short due to the increase in viscosity. The present invention can be used in the backing agent of the tile carpet as a resin composition that can compensate for the disadvantages to shorten the dry curing time to compensate for the pot life.

Claims (2)

Mixing at least one of superhard cement, super cement, and hydration accelerator with respect to the composition consisting of 100 parts by weight of solid content of the aqueous acrylic emulsion resin, 0-500 parts by weight of the non-hydraulic inorganic filler, and 100-250 parts by weight of ordinary cement or back cement. In the method for producing a backing material aqueous acrylic emulsion resin composition for tile carpet improved drying curing rate by adding a compound that can act as a Lewis acid as a retardant within 15 parts by weight of a carpet tile resin composition . The method of claim 1, wherein the delaying agent is Alanine, Serine, Isoleucine, Leucine, Tyrosine, Tyrosine, Lauric acid, Lysine, Arginine ), Aspartic acid (Aspartic acid), glutamic acid (Clutamic acid), cystine (Cystine), such as amino acids or ethylene diaminetetraacetic acid (Ethlenediaminetetraacetic acid; EDTA) having a non-covalent electron pair Method for producing a resin composition.