JP2857578B2 - Manufacturing method of molded product - Google Patents
Manufacturing method of molded productInfo
- Publication number
- JP2857578B2 JP2857578B2 JP6093664A JP9366494A JP2857578B2 JP 2857578 B2 JP2857578 B2 JP 2857578B2 JP 6093664 A JP6093664 A JP 6093664A JP 9366494 A JP9366494 A JP 9366494A JP 2857578 B2 JP2857578 B2 JP 2857578B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- weight
- parts
- molded product
- thermoplastic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Moulding By Coating Moulds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は該熱可塑性材料を使用し
た成形物の製造方法に関するものである。The present invention relates to a method of manufacturing a molded product using the thermoplastic material.
【０００２】[0002]
【従来の技術】従来、ポリエチレン、ポリプロピレン、
ポリ塩化ビニル等の熱可塑性プラスチックに補強のた
め、あるいは難燃性付与のために炭酸カルシウム、タル
ク等の充填材が添加されていた。2. Description of the Related Art Conventionally, polyethylene, polypropylene,
Fillers such as calcium carbonate and talc have been added to thermoplastics such as polyvinyl chloride for reinforcement or for imparting flame retardancy.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の充填材を熱可塑性プラスチックに多量添加すると製品
が脆化し機械的強度が逆に低下してしまい、充分な難燃
性を付与出来ないと云う問題点があった。However, if a large amount of the above-mentioned conventional filler is added to thermoplastics, the product becomes brittle and the mechanical strength is reduced, so that sufficient flame retardancy cannot be imparted. There was a point.
【０００４】[0004]
【課題を解決するための手段】本発明は上記従来の課題
を解決するための手段として、ＭＦＲ１００以上の熱可
塑性プラスチック１００重量部に対してセメント系水硬
性材料を５０〜３００重量部、水を該セメント系水硬性
材料に対して１０〜３０重量％添加混合した熱可塑性材
料を加熱成形する成形物の製造方法を提供するものであ
る。該加熱成形は射出成形であることが望ましく、また
該熱可塑性プラスチックはポリプロピレンであることが
望ましい。 The present invention SUMMARY OF THE INVENTION are the means for solving the conventional problems described above, 50 to 300 parts by weight of cement-based hydraulic material based on 100 parts by weight of M FR100 or more thermoplastics, It is an object of the present invention to provide a method for producing a molded product by heating and molding a thermoplastic material in which water is added to and mixed with 10 to 30% by weight of the cement-based hydraulic material. It is desirable heating molding is injection molding, also be <br/> thermoplastic plastic is polypropylene
desirable.
【０００５】本発明に用いられる熱可塑性プラスチック
としては例えばポリエチレン、ポリプロピレン、エチレ
ン−プロピレン共重合体、エチレン−酢酸ビニル共重合
体、ポリ塩化ビニル、ポリスチレン、ポリメタクリレー
ト、ポリ塩化ビニリデン、スチレンーブタジエン共重合
体、ポリエステル、ポリアミド等がある。本発明におい
てはスクラップから再生された再生熱可塑性プラスチッ
クを使用してもよい。本発明においては該熱可塑性プラ
スチックはＭＦＲ（Ｍｅｌｔ ＦｌｏｗＲａｔｅ，ＡＳ
ＴＭ Ｄ １２３８ ＣonditionＬでの測定値）が１０
０以上のものを使用する。上記熱可塑性プラスチックの
中でポリプロピレンは成形性、耐アルカリ性等に優れて
おり望ましいものである。Examples of the thermoplastic used in the present invention include polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, polyvinyl chloride, polystyrene, polymethacrylate, polyvinylidene chloride and styrene butadiene. There are polymers, polyesters, polyamides and the like. In the present invention, recycled thermoplastics recycled from scrap may be used. In the present invention, the thermoplastic is MFR (Melt FlowRate, AS).
(Measured value in TM D 1238 Condition L) is 10
Use 0 or more. Among the above thermoplastics, polypropylene is desirable because of its excellent moldability, alkali resistance and the like.
【０００６】本発明に使用するセメント系水硬性材料と
しては、例えばポルトランドセメント、高炉スラグセメ
ント、シリカセメント、フライアッシュセメント、アル
ミナセメント、炭酸マグネシウムセメント等のセメント
類がある。該セメント類に例えばケイ石粉、ケイ砂、シ
リカヒューム等のケイ酸含有材料が添加されてもよい。
また更にシラスバルーン、パーライト、フライアッシ
ュ、高炉スラグ、ゼオライト、セピオライト、ベントナ
イト、ケイソウ土等の充填材、塩化カルシウム、塩化マ
グネシウム、硫酸アルミニウム、塩化アルミニウム、ア
ルミン酸ナトリウム、スルファミン酸、水ガラス等のセ
メント硬化促進剤、紫外線吸収剤、老化防止剤、着色
材、ポリビニルアルコール、カルボキシメチルセルロー
ス等の増粘剤等が添加されてもよい。Examples of the cement-based hydraulic material used in the present invention include portland cement, blast-furnace slag cement, silica cement, fly ash cement, alumina cement, and magnesium carbonate cement. Silicic acid-containing materials such as silica stone powder, silica sand and silica fume may be added to the cements.
In addition, fillers such as shirasu balloon, perlite, fly ash, blast furnace slag, zeolite, sepiolite, bentonite, diatomaceous earth, cement such as calcium chloride, magnesium chloride, aluminum sulfate, aluminum chloride, sodium aluminate, sulfamic acid, water glass, etc. A curing accelerator, an ultraviolet absorber, an antioxidant, a coloring agent, a thickener such as polyvinyl alcohol, carboxymethyl cellulose, and the like may be added.
【０００７】本発明では上記熱可塑性プラスチック１０
０重量部に対してセメント系水硬性材料は５０〜３００
重量部の範囲で混合され、上記混合物を材料として成形
する場合には、通常該セメント系水硬性材料に対して１
０〜３０重量％の水を添加した上で熱成形を行なう。成
形後は得られた成形物は所望なれば自然養生、水中養生
あるいはオートクレーブ養生を行なう。オートクレーブ
養生條件は通常温度１４０〜１８０℃、圧力３〜１２Kg
/cm2、５〜１０時間である。しかしながら上記水の添加
は本発明にとって必須のものではない。該熱成形には例
えば射出成形、押出成形、プレス成形等が含まれ、該成
形において適用される温度は使用される熱可塑性プラス
チックの溶融点以上とし、例えばポリプロピレンの場合
には１８０〜２２０℃の範囲の温度が適用される。[0007] In the present invention, the thermoplastic 10
50 to 300 cement-based hydraulic materials per 0 parts by weight
When the mixture is mixed in the range of parts by weight and the mixture is molded as a material, the mixture is usually added to the cement-based hydraulic material in an amount of 1 part.
Thermoforming is performed after adding 0 to 30% by weight of water. Molded article after obtained molded will rows natural curing, underwater curing or autoclave curing if desired. Oh Tokurebu curing Joken is usually temperature 140~180 ℃, pressure 3~12Kg
/ cm 2 , 5 to 10 hours. However, the addition of water is not essential for the present invention. The thermoforming includes, for example, injection molding, extrusion molding, press molding, and the like, and the temperature applied in the molding is set to be equal to or higher than the melting point of the thermoplastic used, and in the case of polypropylene, for example, 180 to 220 ° C. A range of temperatures applies.
【０００８】[0008]
【作用】本発明においてはＭＦＲ１００以上の熱可塑性
プラスチックを使用するから、セメント系水硬性材料を
多量添加混合しても、混合物は良好な熱流動性を示し、
熱成形が容易である。またセメント系水硬性材料を充填
材として使用し、熱可塑性材料配合時に水を添加するか
ら、水は該熱可塑性材料内に均一に行きわたり易く藻が
い熱可塑性材料内のセメント系水硬性材料は円滑に硬化
して製品の強度を向上させる。しかしながらセメント系
水硬性材料の添加量が該熱可塑性プラスチック１００重
量部に対して５０重量部未満であると充填材効果例えば
補強効果や難燃性付与効果等が顕著でなく、３００重量
部を越えると製品が脆化する。According to the present invention, since a thermoplastic material having an MFR of 100 or more is used, even if a large amount of a cement-based hydraulic material is added and mixed, the mixture exhibits good heat fluidity,
Easy thermoforming. In addition, since a cement-based hydraulic material is used as a filler and water is added at the time of blending the thermoplastic material , the water easily spreads evenly in the thermoplastic material and algae are easily formed.
Cement-based hydraulic material in the stomach thermoplastic material smoothly hardness turned into it to improve the strength of the product. However, when the addition amount of the cement-based hydraulic material is less than 50 parts by weight with respect to 100 parts by weight of the thermoplastic, the effect of the filler, for example, the reinforcing effect or the effect of imparting flame retardancy is not remarkable, and exceeds 300 parts by weight. And the product becomes brittle.
【０００９】[0009]
【実施例】〔実施例１〕 下記の組成を混合する。 ポリプロピレン（ＭＦＲ１５０） １００重量部 ポルトランドセメント ８０ 〃 ケイ石粉 ７０ 〃 水 １６ 〃 上記混合物は温度２１０℃、射出圧９００Kg/cm2の條件
で射出成形され、成形物は大気中および水中で７日間養
生される。養生後成形物の機械的性質を測定した結果を
表１に示す。比較としてポルトランドセメントとケイ石
粉に代えて炭酸カルシウムを１５０重量部添加した混合
物を同様に成形し、該比較成形物の機械的強度を測定
し、その結果を表１に列記した。EXAMPLES Example 1 The following compositions are mixed. 100 parts by weight of polypropylene (MFR150) 100 parts by weight Portland cement 80 〃 silica powder 70 〃 water 16 〃 The above mixture is injection molded under the conditions of a temperature of 210 ° C. and an injection pressure of 900 kg / cm 2 , and the molded product is cured in the air and water for 7 days. You. Table 1 shows the results of measuring the mechanical properties of the molded product after curing. For comparison, a mixture in which 150 parts by weight of calcium carbonate was added in place of Portland cement and silicaite powder was similarly molded, and the mechanical strength of the comparative molded product was measured. The results are listed in Table 1.
【表１】 [Table 1]
【００１０】表１をみれば、セメント系水硬性材料を充
填材として使用した実施例１は水硬性のない炭酸カルシ
ウムを使用した比較例に比して機械的強度ははるかに大
きいが、実施例１においても大気中養生よりは水中養生
の方が、成形物中のセメント系水硬性材料の硬化が促進
され、曲げ強度はより大きくなることが認められる。[0010] According to Table 1, the mechanical strength of Example 1 using a cement-based hydraulic material as a filler is far greater than that of a comparative example using calcium carbonate having no hydraulic property. Also in the case of No. 1, it is recognized that the curing in the cement-based hydraulic material in the molded article is accelerated and the flexural strength is increased in the underwater curing as compared with the curing in the air.
【００１１】〔実施例２〕 表２に示す組成を混合する。Example 2 The compositions shown in Table 2 were mixed.
【表２】 上記混合物を実施例１と同様な條件で射出成形して成形
物を得、該成形物について７日間の水中養生を行なった
後機械的性質を測定した結果を表３に示す。[Table 2] The mixture was injection-molded under the same conditions as in Example 1 to obtain a molded product. The molded product was cured in water for 7 days, and the mechanical properties were measured. Table 3 shows the results.
【表３】 [Table 3]
【００１２】表３をみれば、本発明に限定した範囲内の
セメント系水硬性材料を含有する試料Ｎo.２〜Ｎo.５は
優れた機械的性質を示すが、該セメント系水硬性材料を
５０重量部未満の量で含むＮo.１は充填材による補強効
果が顕著でなく、また３００重量部を越える量で含むＮ
o.６は成形物が脆化して曲げ強度が著るしく低下するこ
とが認められる。According to Table 3, Samples No. 2 to No. 5 containing the cement-based hydraulic material within the range limited to the present invention show excellent mechanical properties. In No. 1 containing less than 50 parts by weight, the reinforcing effect of the filler is not remarkable, and N containing more than 300 parts by weight
In o.6, it is recognized that the molded product becomes brittle and the bending strength is significantly reduced.
【００１３】[0013]
【発明の効果】したがって本発明においては、熱可塑性
プラスチックに多量の充填材を混合しても優れた機械的
強度を有する成形物が得られる。本発明によって得られ
る成形物は例えばサイディング、屋根瓦、床材、タイ
ル、コンクリート型枠、人造木、下水管、トラフ、マン
ホール等に有用である。Thus, in the present invention, a molded article having excellent mechanical strength can be obtained even if a large amount of filler is mixed with the thermoplastic. The molded product obtained by the present invention is useful for, for example, siding, roof tile, flooring, tile, concrete formwork, artificial wood, sewer pipe, trough, manhole, and the like.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０４Ｂ 14:06 24:26） Ｂ２９Ｋ 23:00 509:06 (72)発明者 鈴木 忠信 愛知県名古屋市港区船見町１−74 アロ ン化成株式会社技術研究所内 (72)発明者 長谷川 正 愛知県名古屋市港区船見町１−74 アロ ン化成株式会社技術研究所内 (56)参考文献 特開 平７−10626（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C04B 28/02 B29C 45/00 C04B 24/24──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C04B 14:06 24:26) B29K 23:00 509: 06 (72) Inventor Tadanobu Suzuki 1-Funamicho, Minato-ku, Nagoya-shi, Aichi Prefecture 74 Inside Alon Kasei Co., Ltd. (72) Inventor Tadashi Hasegawa 1-74 Funami-cho, Minato-ku, Nagoya City, Aichi Prefecture Alone Kasei Co., Ltd. (56) References JP-A-7-10626 (JP, A (58) Fields surveyed (Int. Cl. 6 , DB name) C04B 28/02 B29C 45/00 C04B 24/24
Claims (3)
１００重量部に対してセメント系水硬性材料を５０〜３
００重量部、水を該セメント系水硬性材料に対して１０
〜３０重量％添加混合した熱可塑性材料を加熱成形する
ことを特徴とする成形物の製造方法 1. A cement-based hydraulic material is added in an amount of 50 to 3 parts by weight per 100 parts by weight of a thermoplastic having an MFR of 100 or more.
00 parts by weight, 10 parts by weight of water with respect to the cement-based hydraulic material.
A method for producing a molded product, which comprises thermoforming a thermoplastic material mixed with an additive of up to 30% by weight.
載の成形物の製造方法 2. The method according to claim 1 , wherein said heat molding is injection molding.
である請求項１に記載の成形物の製造方法 3. The method according to claim 1, wherein said thermoplastic is polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6093664A JP2857578B2 (en) | 1994-04-06 | 1994-04-06 | Manufacturing method of molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6093664A JP2857578B2 (en) | 1994-04-06 | 1994-04-06 | Manufacturing method of molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07277804A JPH07277804A (en) | 1995-10-24 |
| JP2857578B2 true JP2857578B2 (en) | 1999-02-17 |
Family
ID=14088671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6093664A Expired - Fee Related JP2857578B2 (en) | 1994-04-06 | 1994-04-06 | Manufacturing method of molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2857578B2 (en) |
-
1994
- 1994-04-06 JP JP6093664A patent/JP2857578B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07277804A (en) | 1995-10-24 |
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