KR101183366B1 - Recycled thermoplastic resin composition and molded article comprising it - Google Patents

Abstract

Despite having a large amount of recycled resin, a facility having a good balance of stiffness and impact resistance and having creep resistance equivalent to that of an unused polyolefin resin and a rainwater containing the recycled thermoplastic resin composition and the like A molded article for a filling member is provided.

Regenerated polyolefin resin composition containing 10 to 90% by weight of a high molecular weight polyolefin resin having a weight average molecular weight of 500,000 or more, and 90 to 10% by weight of regenerated polyolefin resin, low density polyethylene with respect to 100 parts by weight of the regenerated polyolefin resin composition, and ( Or) 1 to 30 parts by weight of a reaction system resin component containing an organic peroxide, a radical scavenger, and a (meth) acrylate monomer.

Regenerated Thermoplastic Resin, Polyolefin Resin, Impact Resistance, Rainwater Storage Facility

Description

Regenerated thermoplastic resin composition and molded article containing same {RECYCLED THERMOPLASTIC RESIN COMPOSITION AND MOLDED ARTICLE COMPRISING IT}

1 is a cross-sectional view of one embodiment of a facility for storing and / or penetrating rainwater and the like.

FIG. 2 is a perspective view of one embodiment of a filler for use in the facility of FIG. 1. FIG.

<Description of Major Codes in Drawings>

1: floor

2: excavation

10: reservoir

30: filling member

31: connection

32: inclined plate

[Document 1] Japanese Unexamined Patent Publication No. 4-305413

[Document 2] Japanese Unexamined Patent Publication No. 7-118314

[Document 3] Japanese Unexamined Patent Publication No. 9-3254

[Document 4] Japanese Unexamined Patent Publication No. 2004-19122

The present invention relates to a regenerated thermoplastic resin composition and a molded article comprising the same, in detail, a regenerated thermoplastic resin composition using a regenerated polyolefin resin having mechanical properties equivalent to or higher than that of ordinary unused polyolefin resins and having a long life (creep resistance). And a molded article for a filling member in a facility that stores and / or penetrates rainwater or the like containing the same.

Polyolefins, especially polypropylene resins, are generally inexpensive and are widely used as industrial materials such as automobile parts, electrical and electronic parts, and various packaging materials by utilizing properties such as light weight, chemical resistance, acid resistance, and heat resistance. In addition, particularly in the field of packaging, recycling is required in order to cope with recent environmental problems.

However, conventional recycled polypropylene resins are difficult to reuse in terms of hardness, lubricity, rigidity, and impact resistance, and their use is limited. For example, in the fields of civil construction materials and the like, the above-mentioned stiffness and impact resistance are poor, making it difficult to reuse. In order to solve such a problem, for example, in recycling a thermoplastic resin, a bifunctional processing stabilizer, which is a bisphenol-acrylate compound, is blended, and even if the resin is already deteriorated to some extent, the thermal processing stability is improved. Method (see, for example, Japanese Unexamined Patent Application Publication No. Hei 4-305413), wherein the recovered thermoplastic resins are mixed and melted in two or more kinds, and the vinyl monomers are melt kneaded and polymerized in the presence of the thermoplastic resin mixture to balance physical properties. A method of obtaining this excellent thermoplastic resin composition (see, for example, Japanese Patent Application Laid-Open No. Hei 7-118314), kneading ethylene-propylene rubber into a regenerated polyolefin resin, and dynamically crosslinking to obtain tensile fracture strength and static load compression set. The method of improving a distortion (for example, refer Unexamined-Japanese-Patent No. 9-3254) is mentioned.

However, although all of these conventional methods improve some of the properties of polypropylene resins, they are insufficient in the balance of the rigidity and impact resistance of the resin, and remelting for recycling lowers the balance of rigidity and impact resistance. The drawback of poor creep resistance still remains.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a regenerated thermoplastic resin composition having excellent balance of stiffness and impact resistance and having creep resistance equal to that of an unused polyolefin resin, even though it contains a large amount of regenerated resin. It is to provide a molded article for a filling member in a facility that stores and / or penetrates the back.

MEANS TO SOLVE THE PROBLEM The present inventors earnestly examined in order to solve the said subject, As a result, the regeneration polyolefin resin composition containing a regeneration polyolefin resin and polyolefin resin which has a specific weight average molecular weight, Furthermore, the said regeneration polyolefin resin composition is a low density polyethylene, (Or) The composition which mix | blended specific amount of reaction system resin containing an organic peroxide, a radical trapping agent, and a (meth) acrylate monomer is excellent in the balance of rigidity and impact resistance, and creep resistance is unused polyolefin The present invention has been found to be a regenerated thermoplastic resin composition equivalent to a resin.

That is, according to the first invention of the present invention, there is provided a regenerated thermoplastic resin composition comprising 10 to 90% by weight of high molecular weight polyolefin resin and 90 to 10% by weight of regenerated polyolefin resin, having a weight average molecular weight of 500,000 or more. do.

Furthermore, according to the second invention of the present invention, the reaction system resin component 1 containing low density polyethylene and / or organic peroxide, radical scavenger and (meth) acrylate monomer based on 100 parts by weight of the regenerated thermoplastic resin composition of the first invention. Provided is a regenerated thermoplastic resin composition, containing from 30 to 30 parts by weight.

Further, according to the third invention of the present invention, in the first or second invention, the regenerated thermoplastic resin further contains 0.01 to 5 parts by weight of crystal nucleating agent with respect to 100 parts by weight of the regenerated thermoplastic resin composition of the first invention. A composition is provided.

Further, according to the fourth invention of the present invention, in the second or third invention, the reactive resin component is 0.01-2 parts by weight of organic peroxide, 0.005-1 parts by weight of radical scavenger, and (meth) ) Is a master powder containing 0.05 to 20 parts by weight of an acrylate monomer.

Moreover, according to the 5th invention of this invention, it is formed from the recycled thermoplastic resin composition as described in any one of 1st-4th invention, The rainwater etc. which are used for the facility which accumulate and / or penetrate are used. A molded article for a filling member is provided.

Furthermore, according to the sixth invention of the present invention, the filling member for use in a facility for storing and / or penetrating rainwater or the like, wherein the molded article of the fifth invention is an inclined plate for guiding the introduced rainwater in a predetermined direction. A molded article for is provided.

Although the regenerated thermoplastic resin composition of the present invention contains a large amount of regenerated resin, the regenerated thermoplastic resin composition has a mechanical property equivalent to or higher than that of ordinary unused polyolefin resin, and is particularly a resin composition having excellent long life (creep resistance). In addition, when the regenerated thermoplastic resin composition of the present invention is used, the molded article for a filling member in a facility that stores and / or penetrates rainwater or the like, in particular, exhibits a long service life effect.

BEST MODE FOR CARRYING OUT THE INVENTION [

The present invention relates to a regenerated thermoplastic resin composition which is a regenerated polyolefin resin composition containing a high molecular weight polyolefin resin and a regenerated polyolefin resin having a weight average molecular weight of 500,000 or more, and a low density polyethylene and / or reactive resin component to the regenerated polyolefin resin composition, It is a recycled thermoplastic resin composition which mix | blended the crystal nucleating agent etc. as needed. The component, preparation method, and use of the composition of the present invention will be described in detail.

1. Ingredients Composing the Composition

(1) High molecular weight polyolefin resin

The high molecular weight polyolefin resin used for the regenerated thermoplastic resin composition of the present invention has a weight average molecular weight of 500,000 or more, and preferably 500,000 to 900,000 resins. If the weight average molecular weight of polyolefin resin is less than 500,000, the intensity | strength, elasticity modulus, and creep resistance (break time) of a regeneration resin composition will fall, and are unpreferable.

Examples of the polyolefin resin that can be used in the present invention include polyethylene resins and polypropylene resins, and are not particularly limited as long as the weight average molecular weight is 500,000 or more, and those produced by a conventionally known method can be used, but they are excellent in mechanical properties. Polypropylene resins, particularly homopolypropylene resins, which are unlikely to cause deformation during molding, are preferable.

Here, the weight average molecular weight of polyolefin resin is a value measured by a gel permeation chromatography (GPC).

The compounding quantity of high molecular weight polyolefin resin is 10 to 90 weight% in total 100 weight% with the regeneration polyolefin resin mentioned later, Preferably it is 20 to 80 weight%. If the blending amount of the high molecular weight polyolefin resin is less than 10% by weight, the strength, elastic modulus, and creep resistance of the regenerated thermoplastic resin composition will be lowered, and if it exceeds 90% by weight, effective utilization of petroleum resources cannot be achieved.

(2) regenerated polyolefin resin

As a regenerated polyolefin resin used for the regenerated thermoplastic resin composition of this invention, it is a regenerated polyolefin resin recycled from molded articles, such as polyethylene, an ethylene propylene block copolymer, polypropylene, etc., for example. These regenerated polyolefin resins may contain a colorant, a filler, an antioxidant, a stabilizer and the like.

In the regenerated thermoplastic resin composition of the regenerated polyolefin-based resin composition of the present invention, the blending amount of the regenerated polyolefin-based resin is 10 to 90 wt%, preferably 100 wt% in total with the high molecular weight polyolefin-based resin component described above. 20 to 80% by weight. When the compounding quantity of regenerated polyolefin type resin exceeds 90 weight%, the intensity | strength, elasticity modulus, and creep resistance of a regeneration thermoplastic resin composition will fall, and when it is less than 10 weight%, effective utilization of a petroleum resource cannot be aimed at.

(3) low density polyethylene

The low-density polyethylene used for the regenerated thermoplastic resin composition of the present invention is a component having a function of promoting compatibility of the high molecular weight polyolefin resin component with the regenerated polyolefin resin. The low density polyethylene that can be used in the present invention is not particularly limited, and those produced by a conventionally known method can be used.

The compounding quantity of low density polyethylene is 1-30 weight part with respect to 100 weight part of recycled polyolefin resin compositions, Preferably it is 3-10 weight part. When the compounding quantity of low density polyethylene exceeds 30 weight part, the rigidity of a regeneration thermoplastic resin composition will fall, and when it is less than 1 weight part, fall strength will fall.

(4) Resin-based resin component

The reactive resin component used in the regenerated thermoplastic resin composition of the present invention is a composition in which an organic peroxide (i), a radical scavenger (ii), and a (meth) acrylate monomer (iii) are added to a polyolefin resin, and is called a reactive master batch. to be. Each component is demonstrated below.

(i) organic peroxides

Examples of the organic peroxide in the reaction resin component used in the present invention include 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane and 2,5-dimethyl-2,5-bis (t-butylperoxy) hexyne -3, t-butyl peroxybenzene, benzoyl peroxide, (alpha), (alpha) '-bis (t-butyl peroxy) diisopropyl benzene, di-t- butyl peroxide, dicumyl peroxide, etc. are mentioned. These may be used independently or may use 2 or more types together.

The compounding quantity of the organic peroxide in a reaction system resin component is 0.01-2 weight part with respect to 100 weight part of polyolefin resin, Preferably it is 0.1-0.5 weight part. If it is less than 0.01 part by weight, the crosslinking is not sufficiently achieved, and creep resistance tends to be lowered. If it exceeds 2 parts by weight, the resin tends to be decomposed by excess organic peroxide.

(ii) radical scavengers

As a radical trapping agent in the reaction system resin component used by this invention, it is a compound which can react with an alkyl radical species, and can couple | bond with a (meth) acrylate monomer after couple | bonding with an alkyl radical. Examples of the compound having such an action include quinones such as p-benzoquinone, p-naphthoquinone, 2-t-butyl p-benzoquinone and 2,5-diphenyl p-benzoquinone, and 1,4- Naphthoquinones such as naphthoquinone, 2-hydroxy-1,4-naphthoquinone, vitamin K, phenothiazine, bis- (α-methylbenzyl) phenothiazine, 3,7-dioctylphenothiazine, Phenothiazines, such as bis-((alpha)-dimethylbenzyl) phenothiazine, etc. are mentioned. The said compound can also be used in combination of 2 or more types.

The compounding quantity of the radical trapping agent in a reaction system resin component is 0.005-1 weight part with respect to 100 weight part of polyolefin resins, Preferably it is 0.1-0.5 weight part. If it is less than 0.005 part by weight, the crosslinking will not be sufficiently achieved, and creep resistance will tend to be lowered.

(iii) (meth) acrylate monomers

The (meth) acrylate monomer in the reaction system resin component used in the present invention means a compound having two or more (meth) acryloyloxy groups (also referred to as (meth) acryl groups) in a molecule, for example, (meth) acryl Examples of the compound having two loyloxy groups include alkanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, and polypropylene glycol di ( Meth) acrylate, neopentylglycol di (meth) acrylate, dimethyloltricyclodecanedi (meth) acrylate, ethylene glycol adduct di (meth) acrylate of bisphenol A, propylene glycol adduct di (of bisphenol A (Meth) acrylate etc. are mentioned, As a compound which has three acryloyloxy groups, a trimethylol propane tri (meth) acrylate and a pentaerythrate are mentioned. Toll tri (meth) acrylate, trimethylolpropane ethylene oxide addition tri (meth) acrylate, glycerin propylene oxide addition tri (meth) acrylate, tri (meth) acryloyloxyethyl phosphate, etc. are mentioned, ( Pentaerythritol tetra (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, etc. are mentioned as a compound which has four met) acryloyloxy groups. The said (meth) acrylate monomers may be used independently or may use 2 or more types together.

The "(meth) acryloyloxy group" means "acryloyloxy group" or "methacryloyloxy group", and the "(meth) acrylic group" means "acrylic group" or "methacryl group". it means.

The compounding quantity of the (meth) acrylate monomer in a reaction system resin component is 0.05-20 weight part with respect to 100 weight part of polyolefin resin, Preferably it is 0.5-2 weight part. If it is less than 0.05 part by weight, the crosslinking will not be sufficiently performed, and creep resistance will tend to be lowered. If it exceeds 20 parts by weight, unreacted monomer will remain, and the mechanical properties of the resulting molded product will tend to be lowered.

Moreover, although it does not specifically limit as polyolefin resin used by a masterbatch, Resin same as the polyolefin resin used by a regeneration polyolefin resin composition is preferable.

In obtaining the regenerated thermoplastic resin composition of this invention, the compounding quantity of the reaction system resin component is 1-30 weight part with respect to 100 weight part of regeneration polyolefin resin compositions, Preferably it is 5-15 weight part. If the reaction resin component is less than 1 part by weight, crosslinking does not occur, which is not preferable.

(5) nucleating agent

In the regenerated thermoplastic resin composition of this invention, a crystal nucleating agent can be mix | blended as needed. In polypropylene resins, nucleation is relatively slow, and it is preferable to produce homogeneous and fine crystals by the nucleating agent. The crystal nucleating agent is preferably finely distributed at the time of crystallization of the polypropylene resin and is insoluble, and has a crystal surface on which the polypropylene can be adsorbed and quickly become crystal nuclei. Inorganic compounds such as metal salts of carboxylic acids, dibenzyl sorbitol derivatives, phosphate alkali metal salts, talc and the like.

 Specific examples of the nucleating agent include sodium benzene, aluminum adipic acid, aluminum-pt-butylbenzoate, 1,3,2,4-dibenzylidene sorbitol, 1,3,2,4-bis (p-methylbenzylidene Sorbitol, 1,3,2,4-bis (p-ethylbenzylidene) sorbitol, 1,3-p-chlorbenzylidene-2,4-p-methylbenzylidenesorbitol, sodium bis (4-t-butyl Phenyl) phosphate, sodium bis (4-t-methylphenyl) phosphate, potassium bis (4,6-di-t-butylphenyl) phosphate, sodium 2,2'-methylene-bis (4,6-di-t-butyl Phenyl) phosphate, sodium 2,2'-ethylidene-bis (4,6-di-t-butylphenyl) phosphate, talc, calcium carbonate and the like.

The amount of the crystal nucleating agent is preferably 0.01 to 5 parts by weight, more preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the regenerated polyolefin resin composition. By incorporation of the nucleating agent, the nucleating agent is covered on the surface of the resin, crystallization is promoted, and crystallization of the adjacent crystals is promoted and stabilized by the accelerated crystal. If the amount of the nucleating agent is too small, the surface area is large enough to cover the polypropylene resin, and only a part of the resin is grown. On the other hand, when there are too many compounding quantities, it will be in the equilibrium state, and the effect beyond a fixed effect is not acquired, but it becomes excessively costly.

  (6) reinforcement

In the regenerated thermoplastic resin composition of the present invention, a reinforcing material can be blended as necessary. As the reinforcing material, particulate reinforcing materials such as talc, mica, calcium carbonate, barium sulfate, clay, silica powder, wollastonite, glass fibers, carbon fibers, organic fibers such as vinylon, nylon, polyester, fibrous reinforcing fibers such as alumina fibers and metal fibers Can be mentioned.

As for the compounding quantity of a reinforcing material, 1-30 weight part is preferable with respect to 100 weight part of recycled polyolefin resin compositions, More preferably, it is 5-15 weight part. If the blending amount of the reinforcing material is too small, there is no effect of improving the desired physical properties such as rigidity, and if the blending amount is too large, there is a problem that tends to tend to occur during molding.

(7) Other ingredients

In the regenerated thermoplastic resin composition of the present invention, antioxidants, UV stabilizers, compatibility modifiers, pigments, organic colorants, titanium dioxide, lubricants, fluorescent brighteners, and electrifiers can be added as additives within a range that does not impair the properties of the present invention. An inhibitor, a flame retardant, a fungicide, etc. can also be mix | blended.

2. Preparation of Recycled Thermoplastic Resin Composition

The production of the regenerated thermoplastic resin composition of the present invention is obtained by uniformly mixing and kneading the above-described components. In addition, when using a reaction system resin composition, a fine crosslinked body is formed by mixing and kneading | mixing the above-mentioned structural component uniformly. Although the method of uniformly mixing and kneading is not particularly limited, dry blending is performed by a general mixer such as Henschel mixer, tumbler, etc., and a single screw extruder, a twin screw extruder, a Benbury mixer, a roll, a brabender flask graph And kneading using a kneading machine or the like. Among these, it is preferable to manufacture using an extruder, especially a twin screw extruder.

3. Use of recycled thermoplastic resin composition

Although the regenerated thermoplastic resin composition of the present invention contains a large amount of regenerated polyolefin resin, it retains mechanical properties equivalent to or higher than that of ordinary unused thermoplastic resins, and is particularly excellent in long-term life (creep resistance). Therefore, it can use suitably for the use of civil construction members, such as a structural material, a construction member, a storage tank, and the like.

In particular, in the filling member of a facility which stores and / or penetrates rainwater, it can use suitably as a material of the inclination board which guide | induces the rainwater which flowed in in the predetermined direction.

Here, the filling member of the facility which stores and / or penetrates rainwater etc. is the filling member of Unexamined-Japanese-Patent No. 2004-19122, etc., and is used for the facility which stores and / or penetrates rainwater etc. which flowed in into a facility. It is a member which connects and fills longitudinally and horizontally up and down in the storage part which stores rain water etc. The filling member has a flat, substantially square plate shape, and four corners each include a connecting portion overlapping the filling member in an up-down direction, and an inclined plate that is fixed to the connecting portion to guide rainwater introduced into the storage portion in a predetermined direction. . For example, in the excavation part 2 which wave-formed the ground 1 shown in FIG. 1, it arrange | positions in the storage part 10 and the storage part 10 in a horizontal direction, and installs it in an up-down direction. It consists of the several filling member 30 which overlapped. As shown in FIG. 2, the filling member 30 supports the vertical load of the member which covers the upper part of the storage part 10, and the horizontal load by hydraulic pressure, and the four circles which secure the space of the storage part 10 are secured. It is comprised from the inclined plate 32 fixed to the columnar connection part 31 and four connection parts 31 and inclining at an angle of about 5 with respect to a horizontal. The inclined plate 32 is formed of a plate material having a thickness of about 4 to 5 mm, and is inclined so as to guide the introduced rainwater, sand and the like in a predetermined direction.

Since the regenerated thermoplastic resin composition of the present invention is excellent in long-term life (creep resistance), it can be particularly preferably used as the material of the inclined plate 32.

<Examples>

Although an Example and a comparative example are shown to the following, this invention is concretely demonstrated to it, but this invention is not limited only to an Example.

In addition, the test method and material used by the Example are as follows.

1. Test Method

(1) Tensile modulus: Measured according to JIS K-7162. In addition, the test piece manufactured the dumbbell test piece using Fanak Auto Short Model 75.

(2) Maximum point stress: Measured according to JIS K-7162.

(3) Creep resistance: The test piece is made of thin strips of 100 mm in length and 10 mm in width, two U notches of 1.5 mm on both sides of the central part, and one side of the test pieces in an oven at 90 ° C. 10 kg of load was applied to the stage to determine the time until fracture.

(4) 0 degreeC fall test: The weight of 5.3R was dropped to the test piece at 0 degreeC by the DuPont impact tester, and the crack height was calculated | required.

(5) Gel fraction: Approximately 1 g of the test piece was finely cut into pellets, wrapped with a 60 mesh stainless steel wire, immersed in 130 ° C. for 24 hours, and required by the following equation by weight change.

Gel fraction = (weight / initial weight after immersion for 24 hours)

2. used materials

(1) polyolefin resin:

    (i) PP-1 (unused PP): single polypropylene (weight average molecular weight: 506,000, number average molecular weight 8,900 (prime polymer company E-111G))

    (ii) PP-2 (unused PP): single polypropylene (weight average molecular weight: 370,000, number average molecular weight 59,000 (Nippon Polypropylene Co., Ltd. BC-03B))

    (iii) Recycled PP (recycled polypropylene resin): Recycled resin (weight average molecular weight: 205,000, number average molecular weight: 34,000) of ethylene propylene block copolymer

(2) Low density polyethylene (LDPE): LK-30 made by Nippon Polyethylene Co., Ltd.

(3) nucleating agent:

    (i) Benzylidene sorbitol: Gelol MD manufactured by Shin-Nipbon Chemical Co., Ltd.

    (ii) Metal phosphates: NA-11 manufactured by Asahi Denka Corporation

(4) Master Powder:

   4 parts by weight of trimethylolpropanetriacrylate (TMPTA), 2,5-dimethyl-2,5-bis (t-butylperoxy) hexyne-3 based on 100 parts by weight of a propylene-ethylene block copolymer having a weight average molecular weight of 1,150,000 2 parts by weight (perhexine 25B) and 4 parts by weight of hydroxynaphthoquinone were used at room temperature.

 (5) Compatibilizer: Ethylene-ethylene butylene-ethylene block copolymer (Dynaron 6200P manufactured by JSR Corporation)

(6) reinforcement:

   (i) Talc (average particle diameter 5 micrometers, C-3 by the Nippon Talc company)

   (ii) barium sulfate (SS-100, manufactured by Kai Kagaku Co., Ltd.)

(Examples 1-8, Comparative Examples 1-7)

The components shown in the following Tables 1 and 2 were melt-kneaded in an extruder (Plastic Kogyo Co., Ltd. make, model "BT-40") at the ratio shown in Tables 1 and 2, and the regenerated thermoplastic resin composition was obtained. The evaluation results of the obtained composition are shown in Tables 1 and 2.

As is clear from Table 1, even when the recycled raw material is used, the mechanical properties (maximum viscosity stress, creep resistance, impact resistance) are excellent, and the recycled raw material can be used in large quantities.

Further, as is clear from Table 2, even when the recycled raw material is used, the gel fraction is increased, so that the mechanical properties (maximum viscosity stress, creep resistance) are excellent, and the recycled raw material can be used in large quantities.

Although the regenerated thermoplastic resin composition of the present invention contains a large amount of regenerated resin, has a mechanical property equivalent to or higher than that of ordinary unused thermoplastic resins, and is particularly excellent in long-term life (creep resistance). It can be used effectively for uses, such as a structural material, a construction member, civil engineering building members, such as a storage tank. In particular, in the filling member of a facility which stores and / or penetrates rainwater, it can use suitably as a material of the inclination board which guide | induces the rainwater which flowed in in the predetermined direction. In addition, since a large amount of reclaimed resin is included, effective utilization of petroleum resources is attempted, so that it can be manufactured at low cost.

Claims (6)

A regenerated thermoplastic resin composition comprising 10 to 90% by weight of high molecular weight polyolefin resin and 90 to 10% by weight of regenerated polyolefin resin, with a weight average molecular weight of 500,000 or more. The method of claim 1, wherein the low density polyethylene based on 100 parts by weight of the regenerated thermoplastic resin composition; Or a reactive resin component containing an organic peroxide, a radical scavenger, and a (meth) acrylate monomer; Or 1 to 30 parts by weight of both the low density polyethylene and the reaction system resin component. The regenerated thermoplastic resin composition according to claim 2, further comprising 0.01 to 5 parts by weight of crystal nucleating agent with respect to 100 parts by weight of regenerated thermoplastic resin composition. The master according to claim 2, wherein the reactive resin component contains 0.01 to 2 parts by weight of organic peroxide, 0.005 to 1 part by weight of radical scavenger, and 0.05 to 20 parts by weight of (meth) acrylate monomer, based on 100 parts by weight of polyolefin resin. Regenerated thermoplastic resin composition, characterized in that the powder. A molded article for a filling member for use in a facility for storing or infiltrating rain water or the like, which is formed from the regenerated thermoplastic resin composition according to any one of claims 1 to 4. The molded article for a filling member for use in a facility for storing or infiltrating rainwater or the like, wherein the rainwater flows in a predetermined direction.

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