JP6363463B2 - Recycled composite material - Google Patents
Recycled composite material Download PDFInfo
- Publication number
- JP6363463B2 JP6363463B2 JP2014207145A JP2014207145A JP6363463B2 JP 6363463 B2 JP6363463 B2 JP 6363463B2 JP 2014207145 A JP2014207145 A JP 2014207145A JP 2014207145 A JP2014207145 A JP 2014207145A JP 6363463 B2 JP6363463 B2 JP 6363463B2
- Authority
- JP
- Japan
- Prior art keywords
- flame retardant
- composite material
- core material
- wood
- surface layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Laminated Bodies (AREA)
Description
本発明は、木粉とプラスチックを主成分とする再生複合材に関する。 The present invention relates to a recycled composite material mainly composed of wood powder and plastic.
建築現場や工場などから排出される木材及びプラスチックを粉砕して加熱混合した材料を押出成形にて成形した再生複合材は、木材の風合いを持ちつつ腐敗しにくい等といった特性を併せ持つことから、建築材料等として広く使用されている(例えば特許文献1参照)。 Recycled composite materials made by extrusion molding of materials that are pulverized and mixed with wood and plastics discharged from construction sites and factories have the characteristics of being hard to decay while having the texture of wood. Widely used as a material or the like (see, for example, Patent Document 1).
上記再生複合材では、難燃性を付与するため、塩化ビニル樹脂や臭素系難燃剤、アンチモン系難燃剤等のハロゲン化合物が使用されてきた。しかし、ハロゲン化合物を含んでいると、燃焼時に塩素ガスなどの有害ガスが発生するため、脱塩処理が必要となり、環境とコストに影響するという問題がある。
そこで、特許文献2では、塩化ビニル樹脂の一部をABS樹脂で代替した木質様樹脂成形体及び木質様積層樹脂成形体の発明が開示されている。
In the recycled composite material, halogen compounds such as vinyl chloride resin, bromine-based flame retardant and antimony-based flame retardant have been used to impart flame retardancy. However, when a halogen compound is contained, a harmful gas such as chlorine gas is generated during combustion, so that a desalting process is required, which affects the environment and cost.
Therefore, Patent Document 2 discloses an invention of a wood-like resin molded body and a wood-like laminated resin molded body in which a part of vinyl chloride resin is replaced with ABS resin.
しかしながら、特許文献2に記載されている木質様樹脂成形体及び木質様積層樹脂成形体も塩化ビニル樹脂を含んでいるため、環境に影響することにかわりはない。また、木質様積層樹脂成形体の場合、化粧層に含まれる木粉が5〜20質量%と少ないため、木質感に乏しいという難点もある。 However, since the wood-like resin molded body and the wood-like laminated resin molded body described in Patent Document 2 also contain vinyl chloride resin, there is no change in affecting the environment. In addition, in the case of a wood-like laminated resin molded body, the wood powder contained in the decorative layer is as small as 5 to 20% by mass, so that there is also a problem that the wood texture is poor.
本発明はかかる事情に鑑みてなされたもので、難燃性が高くハロゲンフリーな再生複合材を提供することを目的とする。また、合成木材製品としての外観及び性能を損なわない再生複合材を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a halogen-free recycled composite material having high flame retardancy. Moreover, it aims at providing the reproduction | regeneration composite material which does not impair the external appearance and performance as a synthetic wood product.
上記目的を達成するため、本発明に係る再生複合材は、木粉とオレフィン系プラスチックと熱膨張性黒鉛とを含む芯材と、前記芯材の表面の少なくとも一部に積層され、木粉とオレフィン系プラスチックと金属水酸化物系難燃剤とを含む表層材とから構成され、
前記芯材は、木粉を30〜60質量%、オレフィン系プラスチックを20〜40質量%、熱膨張性黒鉛を3〜20質量%含有し、
前記表層材は、木粉を10〜50質量%、オレフィン系プラスチックを30〜60質量%、金属水酸化物系難燃剤を10〜50質量%含有することを特徴としている。
In order to achieve the above object, a recycled composite material according to the present invention comprises a core material containing wood powder, an olefin plastic, and thermally expandable graphite, and is laminated on at least a part of the surface of the core material, Consists of a surface layer material containing an olefin plastic and a metal hydroxide flame retardant ,
The core material contains 30 to 60% by weight of wood powder, 20 to 40% by weight of olefin plastic, and 3 to 20% by weight of thermally expandable graphite.
The surface layer material is characterized by containing 10 to 50% by weight of wood powder, 30 to 60% by weight of olefin plastic, and 10 to 50% by weight of metal hydroxide flame retardant .
本発明では、プラスチックにオレフィン系プラスチックを使用すると共に、難燃剤として熱膨張性黒鉛と金属水酸化物系難燃剤を使用することにより、難燃性が高くハロゲンフリーな再生複合材を実現することができる。 In the present invention, by using an olefin plastic as a plastic and using a thermally expandable graphite and a metal hydroxide flame retardant as a flame retardant, a highly flame retardant and halogen-free recycled composite material is realized. Can do.
本発明に係る再生複合材では、芯材に熱膨張性黒鉛、表層材に金属水酸化物系難燃剤をそれぞれ含有させることにより、外観及び性能を損なうことなく、必要とされる難燃性を有するハロゲンフリーな再生複合材を実現することができる。 In the recycled composite material according to the present invention, by including thermally expandable graphite in the core material and metal hydroxide flame retardant in the surface layer material, the required flame retardancy can be achieved without impairing the appearance and performance. It is possible to realize a halogen-free recycled composite material.
続いて、本発明を具体化した実施の形態について説明し、本発明の理解に供する。 Subsequently, an embodiment in which the present invention is embodied will be described for the understanding of the present invention.
本発明の一実施の形態に係る再生複合材は、幅100mm〜190mm程度、厚さ約30mm、長さ4000mm程度とされた長方形板状の再生複合材である。芯材とその表裏面及び両側面を覆う表層材とから構成され、表層材の厚さは0.3〜2mm程度である。
なお、芯材の内部に長手方向に延在する中空部が形成されていてもよい。
A recycled composite material according to an embodiment of the present invention is a rectangular plate-shaped recycled composite material having a width of about 100 mm to 190 mm, a thickness of about 30 mm, and a length of about 4000 mm. It is composed of a core material and a surface layer material covering the front and back surfaces and both side surfaces, and the thickness of the surface layer material is about 0.3 to 2 mm.
In addition, the hollow part extended in a longitudinal direction may be formed in the inside of a core material.
芯材は、木粉を30〜60質量%、オレフィン系プラスチックを20〜40質量%、熱膨張性黒鉛を3〜20質量%含有している。
また、表層材は、木粉を10〜50質量%、オレフィン系プラスチックを30〜60質量%、金属水酸化物系難燃剤を10〜50質量%含有している。
The core material contains 30 to 60% by mass of wood powder, 20 to 40% by mass of olefin plastic, and 3 to 20% by mass of thermally expandable graphite.
Further, the surface layer material contains 10 to 50% by mass of wood powder, 30 to 60% by mass of olefin plastic, and 10 to 50% by mass of metal hydroxide flame retardant.
木粉は、住宅解体時に出る廃材、パレットに使われていた木材及び間伐材などを粉砕したものである。
オレフィン系プラスチックは、ポリプロピレン樹脂やポリエチレン樹脂などであり、工場廃棄物のトレーや自動車のバンパーなどをフレーク状に砕いたものである。
木粉及びオレフィン系プラスチックの割合は、従来の再生複合材と同様でよい。
Wood flour is obtained by pulverizing waste materials, wood used in pallets, and thinned wood, etc., which are produced when dismantling houses.
Olefin-based plastics are polypropylene resin, polyethylene resin, etc., which are crushed factory waste trays, automobile bumpers, and the like into flakes.
The ratio of the wood powder and the olefin plastic may be the same as that of the conventional recycled composite material.
熱膨張性黒鉛及び金属水酸化物系難燃剤は、難燃性を付与するために添加される。
熱膨張性黒鉛を樹脂に添加した場合、当該樹脂が炎などの高温にさらされた際、熱膨張性黒鉛が膨張して樹脂表面を覆い、樹脂の燃焼を防止する。
金属水酸化物系難燃剤は、それ自体燃焼せず、分解時に吸熱すると共に、分解して熱容量の大きな水分子を放出する。金属水酸化物系難燃剤としては、水酸化マグネシウムや水酸化アルミニウムなどを好適に使用することができる。
Thermally expandable graphite and metal hydroxide flame retardant are added to impart flame retardancy.
When thermally expandable graphite is added to a resin, when the resin is exposed to a high temperature such as a flame, the thermally expandable graphite expands and covers the resin surface, thereby preventing the resin from burning.
The metal hydroxide flame retardant does not burn itself, absorbs heat during decomposition, and decomposes to release water molecules having a large heat capacity. As the metal hydroxide flame retardant, magnesium hydroxide or aluminum hydroxide can be preferably used.
熱膨張性黒鉛が3質量%未満の場合、芯材の難燃性が不十分となる。一方、熱膨張性黒鉛が20質量%を超えると、コストが掛かりすぎて好ましくない。
また、金属水酸化物系難燃剤が10質量%未満の場合、表層材の難燃性が不十分となる。一方、金属水酸化物系難燃剤が50質量%を超えると、表層材として好ましい分量の木粉やオレフィン系プラスチック等を確保することが難しくなる。
When the heat-expandable graphite is less than 3% by mass, the flame retardancy of the core material is insufficient. On the other hand, if the heat-expandable graphite exceeds 20% by mass, it is not preferable because it costs too much.
Moreover, when a metal hydroxide type flame retardant is less than 10 mass%, the flame retardance of surface material becomes inadequate. On the other hand, when the amount of the metal hydroxide flame retardant exceeds 50% by mass, it becomes difficult to secure an amount of wood powder, olefin plastic or the like that is preferable as a surface layer material.
ここで、再生複合材の製造方法の一例について説明しておく。
住宅解体時等に出る廃材は、受入検査を経た後、金属や小石などの異物が除去され、段階的な粉砕が行われる。そして、最終的に篩い機で粒度を揃えた粒径数百ミクロン程度の木粉とされ、配合工程へ送られる。
また、プラスチック工場から出るオレフィン系プラスチックは、受入検査後、粉砕機により粒径10mm程度に粉砕され、配合工程へ送られる。
配合工程では、木粉、オレフィン系プラスチック、熱膨張性黒鉛を所定の比率にて加熱混合して芯材用の中間原料(ペレット)を作製すると共に、木粉、オレフィン系プラスチック、金属水酸化物系難燃剤を所定の比率にて加熱混合して表層材用の中間原料(ペレット)を作製する。そして、押出機により芯材用及び表層材用の中間原料を再度加熱し、金型を用いて所定の形状に成形する。
Here, an example of a method for producing a recycled composite material will be described.
Waste materials that come out when the house is demolished are subjected to acceptance inspections, and then foreign materials such as metal and pebbles are removed and pulverized in stages. And finally, it is made into a wood flour having a particle size of about several hundred microns with a uniform particle size by a sieving machine and sent to the blending step.
In addition, olefin-based plastics coming out of a plastic factory are pulverized to a particle size of about 10 mm by a pulverizer after acceptance inspection and sent to the blending process.
In the blending process, wood powder, olefin plastic, and heat-expandable graphite are heated and mixed at a predetermined ratio to produce an intermediate raw material (pellet) for the core material, and wood powder, olefin plastic, metal hydroxide An intermediate raw material (pellet) for the surface layer material is prepared by heating and mixing the system flame retardant at a predetermined ratio. Then, the intermediate material for the core material and the surface layer material is heated again by the extruder, and is formed into a predetermined shape using a mold.
以上、本発明の一実施の形態について説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。例えば、上記実施の形態では、芯材の四周面が表層材で覆われているが、芯材の表面のみなど、芯材の表面の少なくとも一部が表層材で覆われていてもよい。 Although one embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and is within the scope of matters described in the claims. Other possible embodiments and modifications are also included. For example, in the above-described embodiment, the four circumferential surfaces of the core material are covered with the surface layer material, but at least a part of the surface of the core material such as only the surface of the core material may be covered with the surface layer material.
本発明に係る再生複合材の難燃性を検証するために実施した耐燃性試験について説明する。
耐燃性試験は、JIS K6911「熱硬化性プラスチック一般試験方法」の5.24.1 A法によって実施した。
試験片の形状は、長さ127mm、幅13mmの短冊状とし、芯材と表層材の二層構成とした。表1に芯材及び表層材の配合を示す。なお、金属水酸化物系難燃剤には水酸化マグネシウムを使用した。
なお、熱膨張性黒鉛の熱膨張開始温度は約220℃、1000℃における熱膨張度は100cc/g以上である。また、オレフィン系プラスチックにはポリプロピレン樹脂及びポリエチレン樹脂、顔料には無機顔料、添加剤にはPEWAX他を使用した。
The flame resistance test carried out to verify the flame retardancy of the recycled composite material according to the present invention will be described.
The flame resistance test was performed according to the 5.24.1 A method of JIS K6911 “General Test Method for Thermosetting Plastics”.
The shape of the test piece was a strip having a length of 127 mm and a width of 13 mm, and a two-layer structure of a core material and a surface layer material. Table 1 shows the composition of the core material and the surface layer material. In addition, magnesium hydroxide was used for the metal hydroxide flame retardant.
The thermal expansion start temperature of the thermally expandable graphite is about 220 ° C., and the degree of thermal expansion at 1000 ° C. is 100 cc / g or more. In addition, polypropylene resin and polyethylene resin were used for olefin plastics, inorganic pigments were used for pigments, and PEWAX and others were used for additives.
耐燃性評価は、試験片の炎が消えるまでの平均時間、並びに消火後における試験片(表層材及び芯材)の燃焼した長さ(燃焼距離)とした。
炎が180秒間以上消えない場合は可燃性とし、燃焼距離が25mm以下の場合は不燃性、25mmを超え、100mm以下の場合は自消性とする。
試験結果を表2に示す。不燃性もしくは自消性である場合、その試験片は合格とした。
The flame resistance evaluation was defined as the average time until the flame of the test piece disappeared and the burned length (burning distance) of the test piece (surface layer material and core material) after extinguishing the fire.
When the flame does not disappear for 180 seconds or more, it is flammable. When the combustion distance is 25 mm or less, it is nonflammable.
The test results are shown in Table 2. If it is nonflammable or self-extinguishing, the test piece was accepted.
全ての実施例がほぼ1分以内に消炎している。また、実施例2の燃焼距離は15〜25mm、その他の実施例の燃焼距離は20mm程度である。従って、全ての実施例は不燃性の要件を満足している。実操業時における材料のバラツキ等を考慮した場合、本発明に係る再生複合材は、少なくとも自己消化性の要件を満足していると考えられる。 All examples are extinguished within approximately 1 minute. Moreover, the combustion distance of Example 2 is 15-25 mm, and the combustion distance of another Example is about 20 mm. Therefore, all the examples satisfy the non-flammability requirement. In consideration of variations in materials during actual operation, the recycled composite material according to the present invention is considered to satisfy at least the requirements for self-digestibility.
Claims (1)
前記芯材は、木粉を30〜60質量%、オレフィン系プラスチックを20〜40質量%、熱膨張性黒鉛を3〜20質量%含有し、
前記表層材は、木粉を10〜50質量%、オレフィン系プラスチックを30〜60質量%、金属水酸化物系難燃剤を10〜50質量%含有することを特徴とする再生複合材。 A core material containing wood powder, olefin plastic, and thermally expandable graphite, and a surface layer material laminated on at least a part of the surface of the core material and containing wood powder, olefin plastic, and metal hydroxide flame retardant And consists of
The core material contains 30 to 60% by weight of wood powder, 20 to 40% by weight of olefin plastic, and 3 to 20% by weight of thermally expandable graphite.
The surface layer material contains 10 to 50% by mass of wood powder, 30 to 60% by mass of olefin plastic, and 10 to 50% by mass of metal hydroxide flame retardant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014207145A JP6363463B2 (en) | 2014-10-08 | 2014-10-08 | Recycled composite material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014207145A JP6363463B2 (en) | 2014-10-08 | 2014-10-08 | Recycled composite material |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016074169A JP2016074169A (en) | 2016-05-12 |
JP6363463B2 true JP6363463B2 (en) | 2018-07-25 |
Family
ID=55949467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014207145A Active JP6363463B2 (en) | 2014-10-08 | 2014-10-08 | Recycled composite material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP6363463B2 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04142931A (en) * | 1990-10-03 | 1992-05-15 | Hayashi Telempu Co Ltd | Interior finishing material |
US6083601A (en) * | 1997-03-19 | 2000-07-04 | Royal Wood, Inc. | Foam wood extrusion product |
JPH1170535A (en) * | 1997-08-28 | 1999-03-16 | Matsushita Electric Ind Co Ltd | Manufacture of cellulose molded piece |
JP3488111B2 (en) * | 1998-12-07 | 2004-01-19 | 協和化学工業株式会社 | Flame retardant laminated resin molded product |
JP3943755B2 (en) * | 1999-04-16 | 2007-07-11 | 積水樹脂株式会社 | Wood-like material |
JP2002256107A (en) * | 2001-03-05 | 2002-09-11 | Ykk Corp | Composite resin molded form containing flame retardant cellulose powder and its manufacturing method |
JP4278943B2 (en) * | 2002-09-24 | 2009-06-17 | Ykk Ap株式会社 | Cellulose-based powder-containing extruded shape and method for producing the same |
US20040076847A1 (en) * | 2002-10-17 | 2004-04-22 | Saunders Howard E. | Colored wood/polymer composites |
JP2004174721A (en) * | 2002-11-22 | 2004-06-24 | Iris Ohyama Inc | Woody molded product and its manufacturing method |
-
2014
- 2014-10-08 JP JP2014207145A patent/JP6363463B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2016074169A (en) | 2016-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102153820B (en) | Preparation method of flame retarding styrene polymer composite material | |
Umemura et al. | Synergy effects of wood flour and fire retardants in flammability of wood-plastic composites | |
KR20120072622A (en) | Wood plastic composite with excellent flame using expandable graphite and method for manufacturing the same | |
JP2002256107A (en) | Composite resin molded form containing flame retardant cellulose powder and its manufacturing method | |
CN102408642A (en) | Flame retardant micro-foamed all plastic wood-like material and its preparation method | |
US11111364B2 (en) | Flame retardant polymer composite materials and methods of making the same | |
JP6752463B2 (en) | Method for manufacturing flame-retardant foam and flame-retardant foam | |
CN102408640A (en) | Halogen-free inflaming retarding type micro-foaming full-plastic wood-simulating material and preparation method thereof | |
CN108676248A (en) | A kind of high fire-retardance polypropylene material and the preparation method and application thereof | |
KR101236553B1 (en) | Method for manufacturing foam insulation having a function of resistance to flame | |
JP6363463B2 (en) | Recycled composite material | |
KR101791562B1 (en) | Flame retardant air cushion complex film and method for preparation thereof | |
CN105694254A (en) | Flame-retardant EPS (expandable polystyrene) insulation board | |
JP5080849B2 (en) | Carbon black-containing polypropylene-based resin expanded particles and in-mold foam-molded articles comprising the carbon black-containing polypropylene-based resin expanded particles | |
JP2013170207A (en) | Flame retardant-used self-extinguishing steam-expanded material | |
KR101335438B1 (en) | Expanding molded plastic product using different kinds of inorganic fire retardant | |
KR101555612B1 (en) | Preparation method of drivit associate nonflammable expanded polystyrene for facing material of building | |
CN103613872A (en) | High flame retardant polystyrene insulation foam material | |
CN108164874A (en) | A kind of flame-proof sheet material and preparation method thereof | |
KR101954718B1 (en) | Flame Retardant Pellets Using Waste Plastics and Manufacture Method Thereof | |
KR101550900B1 (en) | Manufacturing method of artificial resin wood containing loess | |
CN103881287A (en) | Environment-friendly flame-retardant ABS (Acrylonitrile Butadiene Styrene) material and preparation method thereof | |
CN102975445B (en) | Plastic components and production method thereof including fire resistant coating | |
CN106568350A (en) | Inflaming-retarding moisture-proof firework barrel | |
KR102249815B1 (en) | Limited combustible resin composition, limited combustible sheet and composite panel comprising the same, and method for manufacturing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20160802 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170419 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170530 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20171212 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180104 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180612 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180628 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6363463 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |