KR102165691B1 - A sheet composition, a method for manufacturing single layer sheet flooring material using the sheet composition and the the single layer sheet flooring material manufactured by the method - Google Patents

Abstract

The present invention relates to a sheet composition, a method for manufacturing a single-layer sheet flooring material using the same, and a single-layer sheet flooring material manufactured by the method, and the sheet composition of the present invention comprises a first polyolefin elastomer having a hardness of 80-100 and a hardness of 60 Including a polyolefin elastomer and a polyolefin resin, which is a mixture of -79 second polyolefin elastomer, the single-layer sheet flooring material using the sheet composition has light weight, eco-friendliness, abrasion resistance, stain resistance, flame retardancy, resistance to crushing, and dimensional stability. It relates to a sheet composition capable of improving physical properties, a method for manufacturing a single layer sheet flooring material using the same, and a single layer sheet flooring material manufactured by the manufacturing method.

Description

A sheet composition, a method for manufacturing a single layer sheet flooring material using the same, and a single layer sheet flooring material using the sheet composition and the single layer sheet flooring material manufactured by the manufacturing method by the method}

The present invention relates to a sheet composition, a method for manufacturing a single-layer sheet flooring material using the same, and a single-layer sheet flooring material manufactured by the method, and the sheet composition of the present invention comprises a first polyolefin elastomer having a hardness of 80-100 and a hardness of 60 Including a polyolefin elastomer and a polyolefin resin, which is a mixture of -79 second polyolefin elastomer, the single-layer sheet flooring material using the sheet composition has light weight, eco-friendliness, abrasion resistance, stain resistance, flame retardancy, resistance to crushing, and dimensional stability. It relates to a sheet composition capable of improving physical properties, a method for manufacturing a single layer sheet flooring material using the same, and a single layer sheet flooring material manufactured by the manufacturing method.

In general, flooring is mainly used for finishing the floors of residential or commercial buildings. It provides a hygienic space by blocking dust and coldness from the cement floor, and beautiful patterns in various colors are printed according to customer preference. It also has decorative effects such as changing the interior atmosphere to make it cozy.

Polyvinyl chloride (Poly Vinyl Chloride) is widely used as the flooring material. For example, the polyvinyl chloride chip inlaid flooring material disclosed in Korean Patent Application Publication No. 10-2013-0026629 is a conventional homogeneous type flooring material, that is, as a non-foaming sheet type flooring material consisting only of a polyvinyl chloride chip layer, A floor material having a structure including a polyvinyl chloride chip layer and an ultraviolet curing paint layer applied to the surface of the polyvinyl chloride chip layer has been disclosed.

However, in order to impart flexibility to the polyvinyl chloride, a large amount of a phthalate-based plasticizer is usually added. However, this plasticizer is widely known as an internal secretion-disrupting substance, so-called environmental hormone, and it is eluted when used as a flooring material and has a serious problem that greatly adversely affects the safety of the human body, so the social demand for improvement is increasing. In addition, there is a problem that a large amount of dioxin, which is a carcinogen, is generated when disposed of incineration, so the emergence of eco-friendly flooring made of non-polyvinyl chloride (Non-PVC) material is desired.

Therefore, in order to solve the above problems, it is composed of a non-polyvinyl chloride material, and a homogeneous type flooring material that can improve physical properties such as light weight, eco-friendliness, abrasion resistance, fouling resistance, flame retardancy, compression resistance, and dimensional stability. It is a situation where the development of is desperately required.

KR 10-2013-0026629A (2013.03.14.)

In order to solve the above problems, the present invention is a sheet composition capable of providing a single-layer sheet flooring material with improved physical properties such as light weight, eco-friendliness, abrasion resistance, fouling resistance, flame retardancy, resilience, and dimensional stability, and a single layer using the same. An object of the present invention is to provide a method for manufacturing a sheet flooring material and a single layer sheet flooring material manufactured by the method.

In order to achieve the above object, the present invention includes 55-85 parts by weight of a polyolefin elastomer and 15-45 parts by weight of a polyolefin resin, wherein the polyolefin elastomer has a first polyolefin elastomer having a hardness of 80-100 and a hardness of 60-79. It provides a sheet composition that is a mixture of phosphorus second polyolefin elastomer.

The present invention comprises the steps of (a) kneading each of two or more sheet compositions having different colors; (b) preparing a sheet from each of the kneaded compositions; (c) pulverizing each of the sheets to produce chips; And (d) it provides a single-layer sheet flooring manufacturing method using the sheet composition comprising the step of manufacturing a single-layer sheet flooring by rolling a chip mixture obtained by mixing the prepared chips.

The present invention provides a single-layer sheet flooring produced by a single-layer sheet flooring manufacturing method using the sheet composition.

The sheet composition of the present invention has a small specific gravity, excellent light weight, small TVOC value, excellent eco-friendliness, small F _v value, excellent abrasion resistance, small smoke density, excellent flame retardancy, and small residual indentation rate. It has excellent compression restoration properties, has a small dimensional change rate value, has excellent dimensional stability, and has an effect of implementing excellent stain resistance.

1 is a cross-sectional view schematically showing an example of a single-layer sheet flooring of the present invention.
2 is a cross-sectional view schematically showing an example of a flooring material to which a UV paint layer is further added to the upper surface of the single-layer sheet flooring material of the present invention.
3 is a photograph showing the stain resistance of Example 1 of the present invention.
4 is a photograph showing the stain resistance of Comparative Example 1 of the present invention.

Hereinafter, the present invention will be described in detail together with the accompanying drawings of the present invention.

The present invention includes 55-85 parts by weight of a polyolefin elastomer and 15-45 parts by weight of a polyolefin resin, wherein the polyolefin elastomer is a mixture of a first polyolefin elastomer having a hardness of 80-100 and a second polyolefin elastomer having a hardness of 60-79 It relates to a phosphorus sheet composition.

The polyolefin elastomer may be used to secure abrasion resistance and resilience.

The polyolefin elastomer may include, for example, a copolymer of ethylene and α-olefin. The α-olefin may include one or more of 1-butene, 1-hexene, 4-methyl-1-heptene, and 1-octene.

As a specific example of the polyolefin elastomer, it may be an ethylene and 1-octene copolymer, which is a copolymer of ethylene and 1-octene, which is advantageous in forming a polymer having an amorphous structure due to a long chain length.

The polyolefin elastomer may be a mixture of a first polyolefin elastomer having a hardness of 80-100 and a second polyolefin elastomer having a hardness of 60-79.

The hardness of the first polyolefin elastomer may be 80-100, or 85-95. The hardness may be Shore A hardness measured by ASTM D2240. When the hardness of the first polyolefin elastomer is less than the above range, dimensional stability may be deteriorated, and when the hardness of the first polyolefin elastomer is less than the above range, abrasion resistance and resilience may be reduced.

The melt flow index of the first polyolefin elastomer may be 0.5-5g/10min, or 0.7-3g/10min. The melt flow index may be measured by ASTM D1238 (190°C, 2.16 kg). If the melt flow index of the first polyolefin elastomer is less than the above range, dispersibility may decrease during calendering, resulting in surface defects, and if it exceeds the above range, adhesion to the calendering roll during calendering may occur. .

The glass transition temperature of the first polyolefin elastomer may be -40 to -20°C, or -35 to -25°C. When the glass transition temperature of the first polyolefin elastomer is within the above range, the sheet composition may have suitable flexibility when manufacturing a single-layer sheet flooring material.

The second polyolefin elastomer may have a hardness of 60-79, or 65-75. The hardness may be Shore A hardness measured by ASTM D2240. When the hardness of the second polyolefin elastomer is less than the above range, dimensional stability may be deteriorated, and when the hardness of the second polyolefin elastomer is less than the above range, abrasion resistance and resilience may be decreased.

The melt flow index of the second polyolefin elastomer may be 2-8g/10min, or 3-7g/10min. The melt flow index may be measured by ASTM D1238 (190°C, 2.16 kg). If the melt flow index of the second polyolefin elastomer is less than the above range, dispersibility may decrease during calendering, resulting in surface defects, and if it exceeds the above range, a problem of sticking to the calendering roll during calendering may occur. .

The glass transition temperature of the second polyolefin elastomer may be -65 to -45°C, or -60 to -50°C. When the glass transition temperature of the second polyolefin elastomer is within the above range, the sheet composition may have suitable flexibility when manufacturing a single-layer sheet flooring material.

The polyolefin elastomer may include the first polyolefin elastomer and the second polyolefin elastomer in a weight ratio of 1:1.1-1:3.5, or 1:1.5-1:3. When the first polyolefin elastomer is included in an amount less than the weight ratio, it is too soft to reduce the softening point and dimensional stability, and when the first polyolefin elastomer is included in an amount exceeding the weight ratio, abrasion resistance and compression recovery may be deteriorated.

The polyolefin elastomer may be included in 55-85 parts by weight or 60-80 parts by weight in the sheet composition. If the polyolefin elastomer is included in less than the above range, the abrasion resistance and compression recovery of the sheet composition may be reduced, and if it is included in the above range, the dimensional stability of the single-layer sheet flooring material made of the sheet composition may be reduced. .

The polyolefin resin is included for improving dimensional stability in a single-layer sheet flooring material and for processability when molding into a sheet form, and may be polypropylene or polyethylene.

The polypropylene is, for example, an ethylene-propylene copolymer, a propylene-acrylic acid copolymer, a propylene-α-olefin (a-olefin having 4 or more carbon atoms) copolymer, and a propylene-vinyl acetate copolymer having a propylene homopolymer and a propylene monomer as main components. It may include any one or a plurality of propylene copolymers such as coalescence and propylene-methylmethacrylate copolymer. Here, "the propylene monomer is used as a main component" means that the mass of the structural unit derived from propylene accounts for 50% by mass or more of the polypropylene copolymer. When a propylene copolymer is used as polypropylene, the propylene copolymer may be a random copolymer or a block copolymer.

As an α-olefin having 4 or more carbon atoms constituting the propylene-α-olefin copolymer, an α-olefin having 4-12 carbon atoms may preferably be used. The α-olefin having 4-12 carbon atoms is, for example, 1-butene, isobutene, 1-pentene, 2-methyl-1-butene, 3-methyl-1-butene, 1-hexene, 2-methyl-1- Pentene, 3-methyl-1-pentene, 4-methyl-1-pentene, 3,4-dimethyl-1-butene, 1-heptene, 3-methyl-1-hexene, 1-octene, 1-nonene, 1- It may include any one or plurality of decene, 1-undecene, and 1-dodecene.

The density of the polypropylene may be 0.5-1.3g/cm ³ , or 0.7-1.1g/cm ³ . The density may be measured by ASTM D792. When the density of the polypropylene is less than the above range, the strength of the single-layer sheet made of the sheet composition may be reduced, causing a problem in walking feeling, and when it is exceeding the above range, it may be difficult to implement weight reduction.

The melt flow index of the polypropylene may be 1.5-10g/10min, or 3-7g/10min. The melt flow index may be measured by ASTM D1238 (230° C., 2.16 kg). When the melt flow index of the polypropylene is less than the above range, flowability may be reduced, and when the polypropylene exceeds the above range, dimensional stability may decrease.

The polyethylene is, for example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra low density polyethylene (VLDPE), linear ultra low density polyethylene (VLLDPE), high density polyethylene (HDPE), polyethylene-propylene copolymer, metallocene polyethylene, Metallocene ethylene-propylene copolymer, and metallocene polyethylene-olefin block copolymer (having a controlled block sequence).

The polyethylene may include bio-polyethylene in order to implement eco-friendliness. For example, the bio-polyethylene may be polyethylene produced by catalytic polymerization through an intramolecular dehydration purification process after ethanol is extracted from a plant such as sugar cane through yeast fermentation.

The polyethylene may include, for example, 80% by weight, or 85% by weight or more of biopolyethylene. When the bio-polyethylene is included in the above range, odor is not emitted and low TVOC (Total Volatile Organic Compounds) can be implemented.

The polyethylene may have a density of 0.5-1.3g/cm ³ , or 0.85-1.0g/cm ³ . The density may be measured according to ASTM D 792 or ASTM D 1505 standards. If the density of the polyethylene is less than the above range, the strength of the single-layered sheet made of the sheet composition may decrease, resulting in a walking feeling, and if it exceeds the above range, the hardness may increase and the processability into a sheet form may be reduced. .

The polyethylene may have a melt flow index of 0.1-10g/10min, or 0.2-5g/10min. The melt flow index may be measured according to ASTM D1238 (190°C, 2.16kg) standard. If the melt flow index of the polyethylene is less than the above range, workability may be deteriorated due to overload during calendering to be described later, and if it exceeds the above range, sheet forming defects may occur during calendering.

The polyolefin resin may be included in 15 to 45 parts by weight, or 20 to 40 parts by weight in the sheet composition. If the polyolefin resin is included in less than the above range, the dimensional stability of the single layer sheet flooring made of the sheet composition may be reduced, and if it is included in the above range, the abrasion resistance of the single layer sheet flooring made of the sheet composition and Pressing recovery may be deteriorated.

The sheet composition may optionally contain one or more of a filler, a lubricant, and a pigment as an additive. In this case, the additive may be included in an amount of 60 to 150 parts by weight, or 70 to 100 parts by weight based on 100 parts by weight of a mixed resin composed of the polyolefin elastomer and the polyolefin resin.

The filler may include, for example, any one or a plurality of tanseok, talc, fly ash, and blast furnace slag. The filler may be isotropic, and in this case, particles having an appropriate size may be selected and used in consideration of both an economic effect and an effect of improving physical properties. Specifically, as the filler, charcoal is advantageous in terms of cost and versatility, and is preferable because it can increase durability.

The filler may be included in an amount of 70-140 parts by weight, or 75-90 parts by weight based on 100 parts by weight of a mixed resin composed of the polyolefin elastomer and the polyolefin resin. When the filler is included in the above range, the single-layer sheet flooring material made of the sheet composition may implement excellent strength at low manufacturing cost.

The lubricant improves fluidity by lubricating the surface of metal equipment such as calender rollers, prevents adhesion between metal equipment and the sheet composition, improves slip properties, and adjusts melt viscosity.In particular, maximizes calendering molding processability. can do.

Various types of lubricants may be used as the lubricant, and as a specific example, stearic acid or higher fatty acids having 18 carbon atoms, which is an eco-friendly lubricant, may be used alone or in combination.

The lubricant may be included in an amount of 0.1-10 parts by weight based on 100 parts by weight of a mixed resin composed of the polyolefin elastomer and the polyolefin resin, but is not limited thereto.

The pigment is added for the purpose of imparting aesthetics, and may include a white pigment or a colored pigment.

The pigment may be included in an amount of 0.1-10 parts by weight based on 100 parts by weight of a mixed resin composed of the polyolefin elastomer and the polyolefin resin, but is not limited thereto.

In addition to the above-listed additives, if necessary to control physical properties, etc., various additives known in the art may be used, and the type and content thereof are not particularly limited.

The method for manufacturing a single-layer sheet flooring 10 using the sheet composition comprises the steps of: (a) kneading two or more sheet compositions having different colors, respectively; (b) preparing a sheet from each of the kneaded compositions; (c) pulverizing each of the sheets to produce chips; And (d) may include the step of manufacturing a single-layer sheet flooring 10 by rolling a chip mixture obtained by mixing the prepared chips (see FIG. 1).

The (a) step may be kneading the sheet composition in a Banbari mixer.

The step (b) may be to prepare a sheet having a thickness of 0.1-5.0mm by calendering each of the sheet compositions having different colors at 140-150°C.

The step (c) may be pulverizing the sheet into chips of various sizes.

In the step (d), the chip mixture may be sprinkled on a carrier belt, scattered, and then rolled at 150-200°C to produce a single-layer sheet flooring 10 having a thickness of 1.0-5.0mm.

The thickness of the single-layer sheet flooring 10 may be 1.0-5.0mm, or 1.5-3.0mm. When the thickness of the single-layer sheet flooring 10 is less than the above range, the walking feeling of the single-layer sheet flooring 10 may be reduced, and the manufacturing cost when the thickness of the single-layer sheet flooring 10 exceeds the above range This can rise.

The manufacturing method of the single-layer sheet flooring 10 using the sheet composition optionally further comprises the step of (e) forming a UV coating layer 20 on the upper surface of the single-layer sheet flooring 10 after the step (d) You can (see Fig. 2).

The step (e) may be to coat the upper surface of the single-layer sheet flooring 10 with a UV curing paint and then cure it to form the UV paint layer 20.

The UV paint layer 20 may prevent contaminants from penetrating into the single-layer sheet flooring, and may have the advantage of facilitating removal of surface contamination when surface contamination occurs.

The specific gravity of the single layer sheet flooring 10 of the present invention may be 0.8-1.4, or 0.9-1.3. If the specific gravity of the single-layer sheet flooring 10 is less than the above range, the feeling of walking may be reduced, and if it exceeds the above range, the light weight may be reduced.

The TVOC of the single-layer sheet flooring 10 of the present invention may be 0.05 mg/m ² h or less or 0.04 mg/m ² h or less. The TVOC can be measured by the Small Chamber method. The single-layer sheet flooring 10 of the present invention can implement excellent eco-friendliness by having a TVOC in the above range.

The F _v value of the single layer sheet flooring 10 of the present invention may be 2.3 mm ³ , or 2.2 mm ³ or less. The F _v value can be measured by the EN 660-2 test method. The single-layer sheet flooring 10 of the present invention can implement excellent wear resistance by having an F _v value in the above range.

The degree of coloring by the iodine tincture on the surface of the single-layer sheet flooring 10 of the present invention showed little coloring even after 30 minutes elapsed after coloring (see Fig. 3). The degree of coloration by the iodine tincture was observed with the naked eye. The single-layer sheet flooring 10 according to an embodiment of the present invention can implement excellent stain resistance by having a colored degree as shown in FIG. 3.

The smoke density of the single-layer sheet flooring 10 of the present invention is 390 or less (when heat irradiated at 25 kW/m ² in the presence of flame), 330 or less (25 kW/m ² without the presence of flame), and 430 or less (in the presence of flame It may be 50kW/m ² ). The smoke density can be measured according to the IMO FTP CODE PART 2: 2010 Appendix 1 standard. The single-layer sheet flooring 10 of the present invention may implement excellent flame retardancy by having a smoke density within the above range.

The residual indentation rate of the single-layer sheet flooring 10 of the present invention may be 4.0% or less, or 3.9% or less. The residual indentation rate may be measured according to KS M 3802. The single-layered sheet flooring 10 of the present invention can implement excellent compression recovery by having a residual indentation rate within the above range.

The dimensional change rate value of the single-layer sheet flooring 10 of the present invention may be 1.30% or less in length, 1.25% or less, 0.20% or less in width, or 0.16% or less. The dimensional change rate may be measured after leaving the cut single-layer sheet flooring material at 80° C. for 6 hours. The single-layer sheet flooring 10 of the present invention can implement excellent heat resistance by having a dimensional change rate within the above range.

<Example>

Example 1

(a) 20 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 50 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 30 parts by weight of a polyolefin resin (Braschem, SLL 118), filler (Lexem, A composition comprising 80 parts by weight of S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was kneaded in a Banbari mixer to prepare a sheet composition.

(b) the sheet composition It was made into a 2.0mm thick sheet using a calendar.

A sheet composition having a color different from that of the sheet composition was used to prepare a sheet having a thickness of 2.0 mm using a calendar.

(c) Each of the sheets was pulverized at 170°C into chips of various sizes.

(d) The chip mixture was sprinkled on a carrier belt and scattered, and then rolled at 180° C. to produce a single-layer sheet flooring material having a thickness of 2.0 mm.

Example 2

In Example 1 (a), 23 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 57 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 20 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Example 3

In Example 1 (a), 32 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 48 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 20 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition including 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Example 4

Example 1 (a) 17 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 43 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 40 parts by weight of a polyolefin resin (Braschem, SLL 118), filler (Lexem , S1000) A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition including 80 parts by weight of a lubricant, 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used.

Example 5

In Example 1 (a), 24 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 36 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 40 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Example 6

In Example 1 (a), 20 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 50 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 30 parts by weight of a polyolefin resin (Lotte Chemical, Y-130) , A single-layer sheet flooring material in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

<Comparative Example>

Comparative Example 1

In Example 1 (a), PVC (LG Chemical, LS 080) 100 parts by weight, plasticizer (LG Chemical, GL300) 40 parts by weight, filler (Lexem, S1000) 80 parts by weight, lubricant (LG Household & Health Care, TH100) 2phr, A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 2 parts by weight of a heat stabilizer (CNA, BZ-011) and 2 parts by weight of a processing aid (LG Chemical, PA828) was used. .

Comparative Example 2

In Example 1 (a), 14 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 36 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 50 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Comparative Example 3

In Example 1 (a), 26 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 64 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 10 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Comparative Example 4

In Example 1 (a), 70 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 30 parts by weight of polyolefin resin (Braschem, SLL 118), 80 parts by weight of filler (Lexem, S1000), lubricant (LG Household & Health Care , TH100) 2 parts by weight, and a single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition including 2 parts by weight of a pigment was used.

Comparative Example 5

In Example 1 (a), 70 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 30 parts by weight of polyolefin resin (Braschem, SLL 118), 80 parts by weight of filler (Lexem, S1000), lubricant (LG Household & Health Care) , TH100) 2 parts by weight, and a single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition including 2 parts by weight of a pigment was used.

Comparative Example 6

A composition comprising 100 parts by weight of a polyolefin resin (Braschem, SLL 118), 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment in Example 1 (a) A single-layer sheet flooring was manufactured in the same manner as in Example 1, except that it was used.

Comparative Example 7

In Example 1 (a), 30 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 70 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 80 parts by weight of a filler (Lexem, S1000), and a lubricant (LG A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 2 parts by weight of Life and Health, TH100) and 2 parts by weight of a pigment was used.

<Reference example>

Reference Example 1

In Example 1 (a), 35 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 35 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 30 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

Reference Example 2

In Example 1 (a), 14 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100), 56 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670), 30 parts by weight of a polyolefin resin (Braschem, SLL 118), A single-layer sheet flooring was prepared in the same manner as in Example 1, except that a composition containing 80 parts by weight of a filler (Lexem, S1000), 2 parts by weight of a lubricant (LG Household & Health Care, TH100), and 2 parts by weight of a pigment was used. Was prepared.

<Experimental Example>

<Lightweight>

The specific gravity of the single layer sheet flooring was measured by a test method according to KS M ISO 2781.

The smaller the specific gravity, the greater the light weight.

<Eco-friendly>

After cutting the single-layer sheet flooring material to a size of 165mm x 165mm x 2mm (width x height x thickness), TVOC was measured by the Small Chamber method using a TVOC measuring device, and the values are shown in Table 1.

The smaller the TVOC value, the greater the environmental friendliness.

<Abrasion resistance>

While spraying 35g of aluminum oxide per 100 seconds on the single-layer sheet flooring, a wear test was conducted 5000 times with a S-39 leather wheel according to the test method of EN 660-2.

F _v =

(F _v : worn volume after 100 abrasion tests (mm ³ ), F _m : average of worn mass after 100 abrasion tests (mg), ρ: density of single-layer sheet flooring (g/cm ³ )

The smaller the F _v value, the better the wear resistance.

<Fouling resistance>

After exposing the iodine tincture to the surface of the single-layer sheet flooring of Example 1 and Comparative Example 1 for 10 seconds, 1 minute, 10 minutes, and 30 minutes, the degree of coloration of the single-layer sheet flooring surface was visually observed (Fig. 3 and 4). The darker the degree of coloring on the surface of the single-layer sheet flooring material, the smaller the stain resistance is evaluated.

<Flame retardant>

According to the IMO FTP CODE PART 2: 2010 Appendix 1 standard, the single layer sheet flooring was thermally irradiated in a sealed cabinet to measure its smoke density. The heat irradiation was conducted to the irradiation intensity of 25kW / m ^2, flame presence 25kW / m ^2, and 50kW / m ² under a flame exists under no flame exists.

The smaller the smoke density, the better the flame retardancy.

<Pressure restoration>

As specified in KS M 3802, a load of 222N was applied to the single-layer sheet flooring material with a hemispherical steel bar having a diameter of 19 mm, released after 5 minutes, and then the residual indentation rate as follows through the change in the thickness of the specimen at the time of 60 minutes. Was obtained.

Residual indentation rate = (T ₀ -T ₁ )/T ₀ X 100%

T ₀ : thickness before pressing, T ₁ : thickness after pressing

The smaller the value of the residual indentation rate, the better the resilience to pressing.

<Dimension stability>

After the single-layer sheet flooring was cut to a size of 225 mm x 50 mm x 2 mm (width x height x thickness), the initial dimensions of the length and width of the cut single layer sheet flooring were measured at room temperature of about 25°C. Subsequently, the cut single-layer sheet flooring was allowed to stand at 80° C. for 6 hours, and then the length and width of the cut single-layer sheet flooring were measured. Next, the dimensional change rate (%) was derived by the following <Equation 1>.

The smaller the value of the dimensional change rate (%) is, the better the dimensional stability is.

<Equation 1>

Dimensional change rate (%) = (late dimension-initial dimension)/initial dimension x100

importance TVOC(mg/m ² h) Wear resistance
(F _v value) Fouling resistance
(Iodine resistance) Smoke density
(IMO FTP CODE Part.2 smoke density)
Unit (Dm) Residual indentation rate (%) Dimensional change rate (%) 25(kW/m ² )
There is a flame 25(kW/m ² )
Flame 蕪 50(kW/m ² )
There is a flame Length width Example 1 1.23 0.037 1.98 Great 350 305 411 3.54 1.20 0.16 Example 2 1.22 0.040 1.78 Great 376 286 415 3.49 1.25 0.15 Example 3 1.23 0.035 1.82 Great 341 321 423 3.53 1.24 0.15 Example 4 1.24 0.033 2.04 Great 364 290 407 3.81 1.17 0.14 Example 5 1.23 0.037 2.16 Great 385 309 396 3.86 1.14 0.13 Example 6 1.25 0.030 2.03 Great 355 298 427 3.51 1.19 0.16 Comparative Example 1 1.46 0.1-0.2 3.0 Inadequate 782 385 924 4.57 1.42 0.14 Comparative Example 2 1.23 0.042 2.7 Great 362 286 452 4.23 1.10 0.13 Comparative Example 3 1.23 0.025 1.64 Great 342 274 424 3.35 1.31 0.17 Comparative Example 4 1.21 0.034 2.32 Great 353 301 396 4.01 1.18 0.15 Comparative Example 5 1.23 0.034 1.69 Great 372 327 412 3.38 1.33 0.17 Comparative Example 6 1.23 0.029 3.35 Great 364 305 425 4.63 1.04 0.12 Comparative Example 7 1.23 0.032 1.57 Great 324 295 398 3.29 1.37 0.19 Reference Example 1 1.22 0.027 2.38 Great 355 324 401 4.02 1.19 0.17 Reference Example 2 1.24 0.36 1.91 Great 329 315 328 3.68 1.35 0.18

-First polyolefin elastomer (LG Chemical, LC 100): ethylene/1-octene copolymer, glass transition temperature -31℃, hardness (Shore A, ASTM D2240) 91, melt flow index (ASTM D1238, 190℃, 2.16kg ) 1.2g/10min

-Second polyolefin elastomer (LG Chemical, LC 670): Ethylene/1-octene copolymer, glass transition temperature -55℃, hardness (Shore A, ASTM D2240) 70, melt flow index (ASTM D1238, 190℃, 2.16kg ) 5.0g/10min

-Polyolefin resin (Braschem, SLL 118): Biopolyethylene, density (ASTM D1505) 0.916g/cm ³ , Melt flow index (ASTM D 1238, 190°C, 2.16kg) 1.0g/10min

-Polyvinyl chloride resin (LG Chemical, LS 080): straight PVC

-Plasticizer (LG Chemical, GL300): Non-phthalate plasticizer

-Filler (Lexem, S1000): Tanseok

-Active (LG Household & Health Care, TH100): stearic acid

-Heat stabilizer (CNA, BZ-0110): barium-zinc based heat stabilizer

-Processing aid (LG Chemical, PA828): methacrylate butadiene styrene (MBS)

The single-layer sheet flooring of Examples 1 to 6 has a small specific gravity, excellent light weight, small TVOC value, excellent eco-friendliness, small F _v value, excellent abrasion resistance, small smoke density, and excellent flame retardancy, The residual indentation rate was small, and the compression restoration was excellent, and the dimensional change rate was small and the dimensional stability was excellent. In addition, the single-layer sheet flooring of Examples 1 to 6 implemented excellent stain resistance.

On the other hand, the single-layer sheet flooring of Comparative Example 1, including PVC and plasticizers, light weight, eco-friendliness, abrasion resistance, fouling resistance, flame retardancy, and compression recovery compared to the Examples.

On the other hand, the single-layer sheet flooring of Comparative Example 2 included 50 parts by weight of a polyolefin elastomer and 50 parts by weight of a polyolefin resin, and the abrasion resistance and compression resistance were lowered compared to the Examples.

On the other hand, the single-layer sheet flooring of Comparative Example 3 included 90 parts by weight of a polyolefin elastomer and 10 parts by weight of a polyolefin resin, and the dimensional stability was lowered compared to the Examples.

On the other hand, the single-layer sheet flooring of Comparative Example 4 included only 70 parts by weight of the first polyolefin elastomer (LG Chemical, LC 100) as a polyolefin elastomer, and the abrasion resistance and compression recovery properties were lowered compared to the examples.

On the other hand, the single-layer sheet flooring material of Comparative Example 5 included only 70 parts by weight of the second polyolefin elastomer (LG Chemical, LC 670) as a polyolefin elastomer, and the dimensional stability was lowered compared to the examples.

On the other hand, the single-layer sheet flooring material of Comparative Example 6 did not contain a polyolefin elastomer, and thus abrasion resistance and compression restoration properties were lowered compared to the examples.

On the other hand, the single-layer sheet flooring of Comparative Example 7 did not contain a polyolefin resin, so dimensional stability was lowered compared to the examples, and when it was molded into a sheet shape, the workability was poor.

On the other hand, the single-layer sheet flooring of Reference Example 1 contained the first polyolefin elastomer and the second polyolefin elastomer in a weight ratio of 1:1, so that the abrasion resistance and compression restoration properties were lowered compared to the examples.

On the other hand, the single-layer sheet flooring material of Reference Example 2 contained the first polyolefin elastomer and the second polyolefin elastomer in a weight ratio of 1:4, and thus dimensional stability was lowered compared to the examples.

10: single layer sheet flooring 20: UV paint layer

Claims (15)

Including 55-85 parts by weight of a polyolefin elastomer comprising a copolymer of ethylene and α-olefin and 15-45 parts by weight of a polyolefin resin,
The polyolefin elastomer has a hardness of 80-100, a melt flow index of 0.5-5g/10min, a glass transition temperature of -40 to -20°C and a hardness of 60-79, and a melt flow index of 2 -8g/10min, glass transition temperature is a mixture containing a second polyolefin elastomer having a glass transition temperature of -65 to -45°C in a weight ratio of 1:1.1-1:3.5,
The polyolefin resin has a density of 0.5-1.3g / ㎝ ^3, melt flow index is 1.5-10g / 10min in a polypropylene or density comprises a 0.5-1.3g / ㎝ ^3, melt flow index is 0.1-10g / 10min polyethylene That sheet composition. The method of claim 1,
The α-olefin is 1-butene, 1-hexene, 4-methyl-1-heptene, and a sheet composition comprising any one or more of 1-octene. delete delete delete delete The method of claim 1,
The polypropylene is any one of a propylene homopolymer, an ethylene-propylene copolymer, a propylene-acrylic acid copolymer, a propylene-a-olefin copolymer having 4 or more carbon atoms, a propylene-vinyl acetate copolymer, and a propylene-methyl methacrylate copolymer Or a sheet composition comprising a plurality. delete The method of claim 1,
The polyethylene is low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra low density polyethylene (VLDPE), linear ultra low density polyethylene (VLLDPE), high density polyethylene (HDPE), polyethylene-propylene copolymer, metallocene polyethylene, metallo A sheet composition comprising any one or more of a strong ethylene-propylene copolymer, and a metallocene polyethylene olefin block copolymer. The method of claim 9,
The polyethylene sheet composition comprising bio-polyethylene. delete (a) kneading two or more sheet compositions of any one of claims 1, 2, 7,, 9 and 10 having different colors, respectively;
(b) calendering each sheet composition having a different color at 140-150° C. to prepare a sheet having a thickness of 0.1-5.0 mm;
(c) pulverizing each of the sheets into chips of various sizes to produce chips; And
(d) sprinkling each of the prepared chip mixtures on a carrier belt, scattering, and rolling at 150-200°C to produce a single-layer sheet flooring having a thickness of 1.0-5.0 mm. The method of claim 12,
The manufacturing method of the single-layer sheet flooring material using the sheet composition further comprises the step of (e) forming a UV coating layer on the upper surface of the single-layer sheet flooring material after the step (d). Sheet flooring manufacturing method. A single product with a specific gravity of 0.8-1.4, a TVOC of 0.05 mg/m ² h or less, an Fv value of 2.3 mm ³ or less, and a residual indentation rate of 4.0% or less, and a thickness of 1.0-5.0 mm. Floor sheet flooring. delete

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