JPS591304B2 - synthetic resin composition - Google Patents
synthetic resin compositionInfo
- Publication number
- JPS591304B2 JPS591304B2 JP10171475A JP10171475A JPS591304B2 JP S591304 B2 JPS591304 B2 JP S591304B2 JP 10171475 A JP10171475 A JP 10171475A JP 10171475 A JP10171475 A JP 10171475A JP S591304 B2 JPS591304 B2 JP S591304B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- weight
- resin composition
- polypropylene
- calcium
- 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
Links
- 239000000203 mixture Substances 0.000 title claims description 14
- 229920003002 synthetic resin Polymers 0.000 title claims description 13
- 239000000057 synthetic resin Substances 0.000 title claims description 13
- 239000004743 Polypropylene Substances 0.000 claims description 17
- -1 polypropylene Polymers 0.000 claims description 17
- 229920001155 polypropylene Polymers 0.000 claims description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 239000002023 wood Substances 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 claims description 5
- 235000010261 calcium sulphite Nutrition 0.000 claims description 5
- 235000013312 flour Nutrition 0.000 claims description 5
- 239000000843 powder Substances 0.000 description 6
- 239000008188 pellet Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 241000208140 Acer Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 244000274847 Betula papyrifera Species 0.000 description 1
- 235000009113 Betula papyrifera Nutrition 0.000 description 1
- 235000009109 Betula pendula Nutrition 0.000 description 1
- 235000010928 Betula populifolia Nutrition 0.000 description 1
- 235000002992 Betula pubescens Nutrition 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】
本発明は一般成形品素材として好適な合成樹脂組成物に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synthetic resin composition suitable as a material for general molded articles.
さらにくわしくは、ポリプロピレンと炭酸カルシウムな
どおよび乾燥木粉とアタクチックポリプロピレンとから
なる耐衝撃性ならびに成形性のすぐれた合成樹脂組成物
に関する。合成樹脂としてポリプロピレンは豊富に入手
することができるうえ、耐熱性や成形性がすぐれている
。これに対して木材粉末は、可成り安価なものであり、
その使用は、樹木の板や柱材以外の有効利用ともなり、
大量に入手することができる。ポリプロピレンに木材粉
末を増量材として添加すれば、物性的に、曲げ強度や弾
性率、熱歪温度、成形収縮率の向上することが認められ
るが、さらに、これらに対し、炭酸カルシウムや亜硫酸
カルシウム、硫酸カルシウムの粉末を添加したところ、
意外にも、これらの諸物性が一層向上することを見出す
に至つた。しかも、これらの三成分は相互の親和性がよ
く、合成樹脂組成物として、他の機械的性質も、実用上
問題ない値を示す。More specifically, the present invention relates to a synthetic resin composition having excellent impact resistance and moldability, which is composed of polypropylene, calcium carbonate, etc., dry wood flour, and atactic polypropylene. Polypropylene is a synthetic resin that is widely available and has excellent heat resistance and moldability. Wood powder, on the other hand, is considerably cheaper;
Its use is also an effective use for things other than tree boards and pillar materials.
Can be obtained in large quantities. When wood powder is added to polypropylene as an extender, it is recognized that the bending strength, elastic modulus, heat strain temperature, and molding shrinkage rate are improved in terms of physical properties. When calcium sulfate powder was added,
Surprisingly, it was discovered that these physical properties were further improved. Moreover, these three components have good mutual affinity, and as a synthetic resin composition, other mechanical properties also exhibit values that pose no problem in practical use.
しかしながら、とくに成形性をよくし、さらに耐衝撃性
を必要とする場合には、アタクチツクポリプロピレンを
特定量添加すればよいことが判明した。すなわち、アタ
クチツクポリプロピレンを合成樹脂組成物中１０ないし
１５重量％添加すれば、最も効果的である。１０重量％
以下では耐衝撃性がわるく、シルバーマークの発生もあ
り、１５重量％以上では成形品の表面にブリードが発生
し、表面硬度も低下して好ましくない。However, it has been found that when particularly good moldability and impact resistance are required, a specific amount of attic polypropylene may be added. That is, it is most effective if atactic polypropylene is added in an amount of 10 to 15% by weight to the synthetic resin composition. 10% by weight
If it is less than 15% by weight, the impact resistance will be poor and silver marks may occur, and if it is more than 15% by weight, bleeding will occur on the surface of the molded product and the surface hardness will be lowered, which is not preferable.
以上の四成分からなる本発明の合成樹脂組成物とは、ポ
リプロピレン３０ないし６０重量％と、炭酸カルシウム
、亜硫酸カルシウム、硫酸カルシウムのうちからえらば
れた少なくとも一種類３０ないし５０重量％と、乾燥木
粉１０ないし３０重量％、アタクチツクポリプロピレン
１０ないし１５重量％とからなるものである。The synthetic resin composition of the present invention comprising the above four components is 30 to 60% by weight of polypropylene, 30 to 50% by weight of at least one selected from calcium carbonate, calcium sulfite, and calcium sulfate, and dried wood. It consists of 10 to 30% by weight of powder and 10 to 15% by weight of atactic polypropylene.
本発明に用いるポリプロピレンは、市販一般品として、
ホモポリマーのほか、プロピレンを主成分とするエチレ
ンなどとの共重合体をも含む。The polypropylene used in the present invention is a commercially available general product.
In addition to homopolymers, it also includes copolymers with propylene as the main component and ethylene.
炭酸カルシウムや亜硫酸カルシウム、硫酸カルシウムは
、１００ないし２５０メッシュのもの、また木材粉末は
、とがやかえでのほか、杉、白かばなどのものを乾燥し
、その水分含有量を５ないし７重量％程度とした、８０
ないし２００メッシュのもの、アタクチツクポリプロピ
レンとしては分子量２５０００ないし３５０００程度の
ものが、いずれも本発明の合成樹脂組成物成分として好
適である。本発明の合成樹脂組成物として、とくに好適
なものは、ポリプロピレン３０ないし４５重量％、炭酸
カルシウム、亜硫酸カルシウム、硫酸カルシウムのうち
からえらばれた少なくとも一種類３０ないし３５重量％
、乾燥木粉１５ないし２０重量％、アタクチツクポリプ
ロピレン１０ないし１５重量％からなるものである。Calcium carbonate, calcium sulfite, and calcium sulfate are 100 to 250 mesh, and wood powder is dried maple, cedar, white birch, etc., and its moisture content is reduced to 5 to 7% by weight. About 80%
Polypropylene having a molecular weight of about 25,000 to 200 mesh and atactic polypropylene having a molecular weight of about 25,000 to 35,000 are both suitable as components of the synthetic resin composition of the present invention. Particularly suitable synthetic resin compositions of the present invention include 30 to 45% by weight of polypropylene and 30 to 35% by weight of at least one selected from calcium carbonate, calcium sulfite, and calcium sulfate.
, 15 to 20% by weight of dry wood flour, and 10 to 15% by weight of atactic polypropylene.
炭酸カルシウムなどや乾燥木粉の使用量を増大すれば、
合成樹脂組成物として、価格の面では好都合であるが、
かえつて、成形性が不良となり、衝撃強度が低下するの
で好ましくない。本発明の合成樹脂組成物は、前記混合
物を混練機を用いて、１８０ないし２００℃で１分間程
度混練したのち、押出機とペレタイザ一を通してペレツ
トの形にし、これを用いて、溶融温度１８０ないし２２
０℃程度の射出成形などにより、任意の形状の成形品を
得ることができる。If you increase the amount of calcium carbonate etc. and dry wood flour,
Although it is advantageous in terms of price as a synthetic resin composition,
On the contrary, the moldability becomes poor and the impact strength decreases, which is not preferable. The synthetic resin composition of the present invention is produced by kneading the above mixture using a kneader at 180 to 200°C for about 1 minute, and then forming it into pellets through an extruder and a pelletizer. 22
Molded products of arbitrary shapes can be obtained by injection molding at about 0°C.
つぎに、本発明を実施例ならびに比較例により、さらに
具体的に説明する。Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples.
実施例 １〜５
ポリプロピレンとして、住友化学（株）製、住友ノーブ
レンＷｌＯｌのペレツトを、２００メツシユの炭酸カル
シウムや亜硫酸カルシウム（ＣａｓＯ３・％Ｈ２Ｏ）、
硫酸カルシウム（ＣａＳＯ４・２Ｈ２０）の粉末と、か
えでの木質部から得た１００メツシユの乾燥木粉、さら
に分子量２５０００のアタクチツクポリプロピレンのペ
レツトと混合し、これを神戸製鋼所製、ＦＣＭフアレル
形連続混練機により、２００℃で１分間溶融ヤしたのち
、押出機とペレタイザ一を通してペレツトにする。Examples 1 to 5 As polypropylene, pellets of Sumitomo Noblen WlOl manufactured by Sumitomo Chemical Co., Ltd. were used, and 200 mesh of calcium carbonate or calcium sulfite (CasO3.%H2O),
Calcium sulfate (CaSO4.2H20) powder, 100 meshes of dry wood flour obtained from the woody part of maple, and pellets of atactic polypropylene with a molecular weight of 25,000 were mixed, and this was mixed in an FCM Farrel type continuous kneading machine manufactured by Kobe Steel, Ltd. After melting at 200°C for 1 minute, the mixture is passed through an extruder and a pelletizer to form pellets.
このペレツトを用いて、射出成形をおこない、板状の試
験片および製品として丸盆をつくる。得られた試験片に
ついて、各種機械的性質を測定し、丸盆については、外
観および射出圧力をみた。これらの結果を第１表に示す
。比較例１〜１０実施例と同様にして、各成文の添加量
を加え、比較をおこない、結果を第２表に示す。Using this pellet, injection molding is performed to produce plate-shaped test pieces and round trays as products. Various mechanical properties of the obtained test pieces were measured, and the appearance and injection pressure of the round trays were observed. These results are shown in Table 1. Comparative Examples 1 to 10 In the same manner as in Examples, the amounts of each component added were added and compared, and the results are shown in Table 2.
上表および第１表をみて明らかなように、本発明による
合成樹脂組成物は、その機械的諸性質がすぐれ、一般成
形品素材として充分使用できることがわかる。As is clear from the above table and Table 1, the synthetic resin composition according to the present invention has excellent mechanical properties and can be used satisfactorily as a material for general molded articles.
Claims (1)
シウム、亜硫酸カルシウム、硫酸カルシウムのうちから
えらばれた少なくとも一種類３０ないし５０重量％と、
乾燥木粉１０ないし３０重量％、アタクチツクポリプロ
ピレン１０ないし１５重量％とからなる合成樹脂組成物
。1 30 to 60% by weight of polypropylene, 30 to 50% by weight of at least one selected from calcium carbonate, calcium sulfite, and calcium sulfate;
A synthetic resin composition comprising 10 to 30% by weight of dry wood flour and 10 to 15% by weight of atactic polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171475A JPS591304B2 (en) | 1975-08-23 | 1975-08-23 | synthetic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10171475A JPS591304B2 (en) | 1975-08-23 | 1975-08-23 | synthetic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5225844A JPS5225844A (en) | 1977-02-26 |
| JPS591304B2 true JPS591304B2 (en) | 1984-01-11 |
Family
ID=14307961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10171475A Expired JPS591304B2 (en) | 1975-08-23 | 1975-08-23 | synthetic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591304B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6841239B2 (en) | 2001-09-28 | 2005-01-11 | Katuyuki Hasegawa | Composite wood and manufacturing method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56134550A (en) * | 1980-03-19 | 1981-10-21 | Noro Masakatsu | Lightweight aggregate-containing cement compression moldings and manufacture |
| JPS59143614A (en) * | 1983-02-07 | 1984-08-17 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of polypropylene board with saw-dust mixed-in |
| AT410943B (en) * | 2001-10-23 | 2003-08-25 | Markus Dipl Ing Rettenbacher | FORM BODIES OF NATURAL FIBERS AND PLASTIC, ITS MANUFACTURE IN THE PRESENCE OF MOISTURE AND ITS USE |
-
1975
- 1975-08-23 JP JP10171475A patent/JPS591304B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6841239B2 (en) | 2001-09-28 | 2005-01-11 | Katuyuki Hasegawa | Composite wood and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5225844A (en) | 1977-02-26 |
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