JPH03215566A - High-specific gravity thermoplastic resin composition - Google Patents
High-specific gravity thermoplastic resin compositionInfo
- Publication number
- JPH03215566A JPH03215566A JP1015690A JP1015690A JPH03215566A JP H03215566 A JPH03215566 A JP H03215566A JP 1015690 A JP1015690 A JP 1015690A JP 1015690 A JP1015690 A JP 1015690A JP H03215566 A JPH03215566 A JP H03215566A
- Authority
- JP
- Japan
- Prior art keywords
- specific gravity
- thermoplastic resin
- toughness
- resin composition
- high specific
- 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.)
- Granted
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 21
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 21
- 239000011342 resin composition Substances 0.000 title claims abstract description 17
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 19
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 17
- -1 aliphatic carboxylic acid compound Chemical class 0.000 claims abstract description 16
- 229920001577 copolymer Polymers 0.000 claims abstract description 13
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical group 0.000 claims abstract description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 4
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 abstract description 3
- 239000012778 molding material Substances 0.000 abstract description 3
- 229920002647 polyamide Polymers 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 abstract description 3
- 229910052721 tungsten Inorganic materials 0.000 abstract description 2
- 239000010937 tungsten Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- IFYXEQMDGTZFCU-UHFFFAOYSA-N 2-methylprop-1-ene;prop-2-enoic acid Chemical compound CC(C)=C.OC(=O)C=C IFYXEQMDGTZFCU-UHFFFAOYSA-N 0.000 description 1
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000874 polytetramethylene terephthalate Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- SDKPSXWGRWWLKR-UHFFFAOYSA-M sodium;9,10-dioxoanthracene-1-sulfonate Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)[O-] SDKPSXWGRWWLKR-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業との利用分野）
本発明は，熱可塑性樹脂にタングステン粉末を高充填し
た射出成形用材料に係り、靭性と高比重性とを必要とす
る電５２ｃ部品や機械ｉ＆等に好適な樹脂組成物に関す
る。Detailed Description of the Invention (Field of Application to Industry) The present invention relates to an injection molding material in which a thermoplastic resin is highly filled with tungsten powder, and is applicable to electrical parts and machines that require toughness and high specific gravity. The present invention relates to a resin composition suitable for i& etc.
（従来の技術）
従来、熱可塑性樹脂に金属粉末を高充填して高比重性を
付与した熱可塑性樹脂組成物が多くの産業分舒で広く使
用されている。例えば，特開昭ａｌｌ−１５９２４８号
公慢では、ポリテトラメチレンテレフタレートに銅、鉄
、ニッケル、アルミニウム，金等の金属粉末を配合した
高比重で且つ、成形性、熱伝導性に優れた熱可塑性樹脂
組成物が示されている。また，特公昭８１−１１２６１
号公報には、熱可塑性樹脂に平均粒径８μ〜４０μの亜
鉛粉末を配合した高比重熱可塑性樹脂組成物の製造方法
が挙げられている。(Prior Art) Conventionally, thermoplastic resin compositions in which high specific gravity is imparted by highly filling a thermoplastic resin with metal powder have been widely used in many industrial sectors. For example, in JP-A No. 159248, a thermoplastic material with high specific gravity and excellent moldability and thermal conductivity is made by blending metal powders such as copper, iron, nickel, aluminum, and gold with polytetramethylene terephthalate. A resin composition is shown. Also, special public service No. 81-11261
The publication discloses a method for producing a high specific gravity thermoplastic resin composition in which zinc powder having an average particle size of 8 .mu.m to 40 .mu.m is blended with a thermoplastic resin.
しかしながら、金属粉末が配合された熱可塑性樹脂組成
物は，金属粉末の配合看増加に伴ない、高比重化するが
、一方では流動性が低下し、成形品外観不良等の問題点
を有する。例えば，比重台以との極めて高比重の熱可塑
性樹脂組成物を得ようとする場合には、金、白金、タン
グステン粉末等を使用し、且つ、高充填しなければなら
ず．混線、及び射出成形が極めて困曙となる。更に、金
属粉末を高充填した熱可塑性樹脂組成物を射出成形する
場合には、金属粉末間の摩擦による局部発熱が大きく、
熱可塑性樹脂の熱分解によるガスの発生，及び成形品外
観不良という問題点がある。However, thermoplastic resin compositions containing metal powder tend to have higher specific gravity as the amount of metal powder added increases, but on the other hand, they have problems such as decreased fluidity and poor appearance of molded products. For example, in order to obtain a thermoplastic resin composition with an extremely high specific gravity on the order of specific gravity, gold, platinum, tungsten powder, etc. must be used and the composition must be highly filled. Crosstalk and injection molding become extremely difficult. Furthermore, when injection molding a thermoplastic resin composition highly filled with metal powder, local heat generation due to friction between the metal powders is large;
There are problems with gas generation due to thermal decomposition of the thermoplastic resin and poor appearance of the molded product.
また，靭性に関しても金膚粉末を高充填した熱可塑性樹
脂組成物は，硬く、且つ鳴くなり十分とはいえない。In addition, in terms of toughness, a thermoplastic resin composition highly filled with Kinhada powder becomes hard and squeals, and cannot be said to be sufficient.
（発明が解決しようとする課題）
本発明は，このような事情に鑑みなされたものであって
，その目的とするところは，高比重で、溶融時の流動性
が良好で混練、成形性に優れ、更に靭性に優れた熱可塑
性高比重樹脂組成物を提供するにある。(Problems to be Solved by the Invention) The present invention was made in view of the above circumstances, and its purpose is to provide a material with high specific gravity, good fluidity during melting, and good kneading and moldability. It is an object of the present invention to provide a thermoplastic high specific gravity resin composition which has excellent toughness.
（課題を解決するための手段）
と記の目的は、熱可塑性樹脂に、アクリル酸エステル共
重合体、全体重量中９０〜９８Ｍｊｉ％のタングステン
粉末，及び同じ＜ ０． ０ １〜０． ６重量％の丁
記一般式１）で示される飽和脂肪族カルボン酸化合物を
配合してなる熱可塑性高比重樹脂組成物によって達成さ
れる。(Means for Solving the Problems) The purpose of the above is to add an acrylic ester copolymer to a thermoplastic resin, 90 to 98 Mji% of tungsten powder based on the total weight, and the same <0. 0 1~0. This is achieved by a thermoplastic high specific gravity resin composition containing 6% by weight of a saturated aliphatic carboxylic acid compound represented by the general formula 1).
（ＣＨｊ（ ＣＨｔ ）ｍｃＯＯ）ｎＲ ”− （
Ｉ）ｃ式中，ｍは！Ｏ〜３！の整数、ｎは１または！、
Ｒはアルカリ金属、アルカリ土類金Ｒ，あるいは脂肪族
炭化水素基を表わす。）
すなわち，本発明者らは，金属粉末としてタングステン
粉末を用い、これを熱可塑性樹脂に高充填し，更に、ア
クリル酸エステル共重合体、及び飽和指肪族カルボン酸
化合物を配合することにより、熱可塑性樹脂に金属粉末
を高充填しても溶融時の流動性が良好で成形性に優れ、
更に靭性に優れた熱可塑性高比重樹脂組成物が得られる
ことを見いだし本発明を完成した。(CHj(CHt)mcOO)nR”- (
I) In the c formula, m is! O~3! integer, n is 1 or ! ,
R represents an alkali metal, an alkaline earth metal R, or an aliphatic hydrocarbon group. ) That is, the present inventors used tungsten powder as a metal powder, highly filled it into a thermoplastic resin, and further blended an acrylic ester copolymer and a saturated aliphatic carboxylic acid compound, Even when the thermoplastic resin is highly filled with metal powder, it has good fluidity when melted and has excellent moldability.
Furthermore, it was discovered that a thermoplastic high specific gravity resin composition with excellent toughness could be obtained, and the present invention was completed.
以下、本発明を詳細に説明する。The present invention will be explained in detail below.
本発明に使用する熱可塑性樹脂としては、一般に射出成
形加工に供せられているものであれば特に制限はなく，
例えば，ポリアミド，ポリエステル、ポリカーボネート
、ポリエーテルサルフオン，ポリオレフィン、ポリフェ
ニレンオキサイド、ポリフェニレンサルファイド、ポリ
エーテルエーテルケトン、▲８樹脂，▲Ｎ樹脂、ＡＢ８
樹脂等を挙げることができる。これらの中で特に好まし
いものとして、ボリアミド、ポリエステル、ポリフェニ
レンサルファイドが挙げられる．
本発明に使用するタングステン粉末としては、その平均
粒径が５０μｍ以下であることが望ましい。更に，粒径
１０μｍ以下のものが、タングステン粉末全体の割合で
５０重量％以ｋ．且つ、粒径２０μｍ以とのものが５０
重量％以上の粒径分布となっているタングステン粉末が
好適である。The thermoplastic resin used in the present invention is not particularly limited as long as it can be generally subjected to injection molding.
For example, polyamide, polyester, polycarbonate, polyether sulfone, polyolefin, polyphenylene oxide, polyphenylene sulfide, polyether ether ketone, ▲8 resin, ▲N resin, AB8
Examples include resins and the like. Among these, particularly preferred are polyamide, polyester, and polyphenylene sulfide. The tungsten powder used in the present invention preferably has an average particle size of 50 μm or less. Furthermore, particles with a particle size of 10 μm or less account for 50% by weight or more of the total tungsten powder. And those with a particle size of 20 μm or more are 50
Tungsten powder having a particle size distribution of at least % by weight is suitable.
このような粒径分布の場合に、特に溶融時の流動性が良
好となる。In the case of such a particle size distribution, fluidity particularly during melting becomes good.
また、タングステン粉末の配合量は９０〜８８重量％で
あることが肝要であり、特に９５〜８８重竜％が好まし
い。配合量が９０重量％未満の場合には、十分な高比重
性を得られず、また、９８重量％を超える場合１こは、
加熱溶融時の流動性が悪く、射出成形が困難となる。Further, it is important that the amount of tungsten powder blended is 90 to 88% by weight, and particularly preferably 95 to 88% by weight. If the amount is less than 90% by weight, a sufficiently high specific gravity cannot be obtained, and if it exceeds 98% by weight,
Poor fluidity during heating and melting makes injection molding difficult.
本発明に使用するアクリル酸エステル共重合体は、炭素
数１−８の飽和もしくは不飽和の直鎮もしくは分岐鎖脂
肪族炭化水素基を有するアクリル酸エステルと，炭素数
１−５の飽和もしくは不飽和の直頼もしくは分岐鎖脂肪
族炭化水素基を有するメタクリル酸エステルとの共重合
体が好ましい。The acrylic ester copolymer used in the present invention consists of an acrylic ester having a saturated or unsaturated straight chain or branched aliphatic hydrocarbon group having 1 to 8 carbon atoms, and a saturated or unsaturated acrylic ester having 1 to 5 carbon atoms. A copolymer with a methacrylic acid ester having a saturated direct or branched aliphatic hydrocarbon group is preferred.
ここに、炭素数１−６の飽和もしくは不飽和の直鎖もし
くは分岐鎖脂肪族炭化水素基を有するアクリル酸エステ
ルとしては、好ましくはアクリル酸メチル、アクリル酸
エチル、アクリル酸イソブチた、炭素数１−５の飽和も
しくは不飽和の直頼もしくは分岐鎖脂肪族炭化水素基を
有するメタクリル酸エステルとしては、メタクリル酸メ
チル，メタクリル酸エチル、メタクリル酸イソブチル，
ジメタクリル酸−１， Ｓ−ブチレン、メタクリル酸−
ｎ−ブチル等が挙げられる。か＼るアクリル酸エステル
共重合体としては，ローム＆ハース社から商品名「パラ
ロイドＫＭ−１＄５０Ｊとして市販されているものが好
ましい。Here, the acrylic ester having a saturated or unsaturated linear or branched aliphatic hydrocarbon group having 1 to 6 carbon atoms is preferably methyl acrylate, ethyl acrylate, isobutylene acrylate, or acrylic acid ester having 1 to 6 carbon atoms. -5 methacrylic acid esters having a saturated or unsaturated direct or branched aliphatic hydrocarbon group include methyl methacrylate, ethyl methacrylate, isobutyl methacrylate,
Dimethacrylic acid-1, S-butylene, methacrylic acid-1
Examples include n-butyl. The acrylic ester copolymer is preferably one commercially available from Rohm & Haas under the trade name "Paraloid KM-1$50J."
アクリル酸エステル共重合体の配合量は，好ましくは０
．１〜５重量％，特に好ましくはＧ． ｌ−５重量％で
ある。アクリル酸エステル共重合体の配含量が０． １
重量％未膚の場合には，靭性，すなわち耐衝撃性の改善
が不十分となり易い。一方、５重量％を超える場合には
、衝撃強度以外の機械物性が低下してしまう傾向がある
。The blending amount of the acrylic ester copolymer is preferably 0.
．． 1 to 5% by weight, particularly preferably G.I. 1-5% by weight. The content of the acrylic ester copolymer is 0. 1
If the weight % is low, the improvement in toughness, that is, impact resistance, tends to be insufficient. On the other hand, if it exceeds 5% by weight, mechanical properties other than impact strength tend to deteriorate.
本発明では．ｋ記一般式（Ｉ）で示される飽和脂肪族カ
ルボン酸化合物を配合することが肝要である。In the present invention. It is important to incorporate a saturated aliphatic carboxylic acid compound represented by general formula (I).
飽和脂肪族カルボン酸化合物は、式中のｍが２０〜５２
の飽和脂肪族カルボン酸の金真塩またはエステルである
。金属塩としては，リチウム、ナトリウム、カリウム等
のアルカリ金属、マグネシウム、カルシウム等のアルカ
リ土類金属から成るものが挙げられる。エステルとして
は、エチレングリコール、１．２−又は１．３ −プ
ロパンジオール、１．５ −又は１，４ −ブタン
ジオール等のアルコールでエステル化したもの等が挙げ
られる。The saturated aliphatic carboxylic acid compound has a formula in which m is 20 to 52.
is a true gold salt or ester of a saturated aliphatic carboxylic acid. Examples of metal salts include those made of alkali metals such as lithium, sodium, and potassium, and alkaline earth metals such as magnesium and calcium. Examples of esters include those esterified with alcohols such as ethylene glycol, 1.2- or 1.3-propanediol, and 1.5- or 1,4-butanediol.
また、飽和脂肪族カルボン酸化合物は１種でも、２種以
上組み合わされた混合物でもよく、混合物としてモンタ
ンワックスが挙げられる。Further, the saturated aliphatic carboxylic acid compound may be one kind or a mixture of two or more kinds, and examples of the mixture include montan wax.
飽和脂肪族カルボン酸化合物の配合量は％０．０１〜０
．５重量％であり，好ましくは０．０３〜０．５重流動
性が不十分となり，射出成形時に、タングステン粉末間
の摩擦による局部発熱でガスが発生し，成形品外観が不
良となるばかりでなく、物性低下も著しい。また、０．
５重看％を超える場合には物性、特に衝撃強度の低下が
著しい。The amount of saturated aliphatic carboxylic acid compound is 0.01% to 0%.
．． 5% by weight, preferably 0.03 to 0.5. The fluidity will be insufficient and during injection molding, gas will be generated due to local heat generation due to friction between tungsten powders, which will only lead to poor appearance of the molded product. However, the physical properties are significantly deteriorated. Also, 0.
When the content exceeds 5%, the physical properties, particularly the impact strength, are significantly reduced.
熱可塑性樹脂へのタングステン粉末，アクリル酸エステ
ル共重合体、及び飽和脂肪族カルボン酸化合物の配合方
法は，いくつか挙げられるが、例えば、熱可塑性樹脂粉
末、タングステン粉末，アクリル酸エステル共重合体、
及び飽和脂肪族カルポン酸化合物粉末をヘンシェルミキ
サー等の高速回転翼を有する混線機で撹拌による摩擦溶
融で造粒する方法や、単軸、或いは２軸混練機で溶融混
練する方法、また、この両者を組み合わせる方法等が挙
げられる。There are several methods for blending tungsten powder, acrylic ester copolymer, and saturated aliphatic carboxylic acid compound into thermoplastic resin. For example, thermoplastic resin powder, tungsten powder, acrylic ester copolymer,
A method in which saturated aliphatic carboxylic acid compound powder is granulated by friction melting by stirring in a mixer with high-speed rotary blades such as a Henschel mixer, a method in which the powder is melt-kneaded in a single-screw or twin-screw kneader, or both methods. Examples include a method of combining.
（発明の効果）
以とのように、本発明にか＼る熱可塑性高比重樹脂組成
物は，熱可塑性樹脂にタングステン粉末更にアクリル酸
共重合体，及びと記一般式（Ｉ）で示される飽和詣肪族
カルボン酸化合物を配合させることにより、極めて高比
重で，且つ優れた成形性、及び靭性を有する。したがっ
て高比重で靭性と寸法精度を必要とする電気部品や機械
部品用の成形材料として好適である。(Effects of the Invention) As described below, the thermoplastic high-density resin composition according to the present invention comprises a thermoplastic resin, tungsten powder, and an acrylic acid copolymer, and is represented by the general formula (I). By incorporating a saturated aliphatic carboxylic acid compound, it has an extremely high specific gravity and excellent moldability and toughness. Therefore, it is suitable as a molding material for electrical and mechanical parts that require high specific gravity, toughness, and dimensional accuracy.
以下、実施例を挙げて、本発明を具体的に説明する。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples.
尚、実施例に示す物性の測定は以下の方法で行なった。The physical properties shown in the Examples were measured by the following method.
（Ｉ） 曲げ強度 ：ＡＳＴＭ Ｄ−７９０（２）
曲げ弾性率：Ａ８ＴＭ Ｄ−７９０（３） 衝
撃強度 二▲８ＴＭ Ｄ−２５８（アイゾット．ノッ
チ付，１／４
インチ）
（４） 比 重 ： ▲ＳＴＭ Ｄ−
７９２（実施例１〜３、比較例１〜４）
粉末状ナイロン６樹指（檀紡■製，ＭＯ−１０２）アク
リル酸エステル共重合体Ｃローム＆ハース社製、パラロ
イドＫＭ−３３０）．飽和、りｄ肪族カルボン酸部分け
ん化エステル（ヘキスト社製、ヘキストワックスＯＦ
）．及び，平均粒径１！ｘｍで．粒復分布が粒径１●４
ｍ以下がＳｉｎｔ量％．１０〜！−βｍが１ａ重量％，
そしてｔ６Ｍｍ以上がｓＳ重量％であるタングステン粉
末を！！！−１に示す割合で配合した．次いでこれを、
ヘンシェル文キサーを用いて高速攪拌Ｆ′ｃ！ｌ［＊溶
融した債，冷却固化して再粉砕し、更に３ｇｒｎｍφ
で軸混練機を用いて、シリンダーｍ度！ Ｓ ６ ”Ｃ
〜！ ＩＩ ａ ”ｃでｆＩｊＳ混線，成形用ペレット
を得た。(I) Bending strength: ASTM D-790 (2)
Flexural modulus: A8TM D-790 (3) Impact strength 2▲8TM D-258 (Izod. with notch, 1/4 inch) (4) Specific gravity: ▲STM D-
792 (Examples 1 to 3, Comparative Examples 1 to 4) Powdered nylon 6 resin (manufactured by Danbo ■, MO-102) Acrylic acid ester copolymer C manufactured by Rohm & Haas Co., Ltd., Paraloid KM-330). Saturated, aliphatic carboxylic acid partially saponified ester (manufactured by Hoechst, Hoechst Wax OF
). And average particle size 1! At xm. Particle distribution is particle size 1●4
m or less is Sint amount %. 10～! −βm is 1a% by weight,
And tungsten powder with sS weight% of t6Mm or more! ! ! -1. Next, this
High-speed stirring F'c using Henschel Bunkisa! l[*Melted bond, cooled and solidified, re-pulverized, and further 3 grnmφ
Using an axial kneader, the cylinder m degrees! S6”C
~! A pellet for molding was obtained with fIjS crosstalk using II a''c.
尚，比較例！の試料は．溶ｌＩ！ｉ流勤性が悪く，ペレ
ット化すろことが出来なかった．
次いで，帰られたべレフトを弔いて，通常実施されてい
るナイロン＄ｔ９！脂の成形条件で射出成形して試験片
を得た．
得られた試験片の物性評価結果を表一！に示す．以Ｍ糸
白
゛唖寺
以との結果より，実施例のナイロン樹脂組成物は，極め
て高比重で、物性、特に耐衝撃性に優れ，かつ成形品外
観も良好であった。Also, a comparative example! The sample is . Melt it! Due to poor workability, it was not possible to make pellets. Next, in memory of Beleft who has returned home, the usual Nylon $t9! Test pieces were obtained by injection molding under the same molding conditions. Table 1 shows the physical property evaluation results of the obtained test pieces! It is shown in From the results shown in Table 1, the nylon resin compositions of Examples had extremely high specific gravity, excellent physical properties, especially impact resistance, and good appearance of molded products.
一方、比較例のナイロン樹脂組成物は、流動性が悪かっ
たり，比重が低すぎたり、物性に問題があったりした。On the other hand, the nylon resin composition of the comparative example had poor fluidity, too low specific gravity, and other problems in physical properties.
Claims (1)
量中９０〜９８重量％のタングステン粉末、及び同じく
０．０１〜６．５重量％の下記一般式（ I ）で示され
る飽和脂肪族カルボン酸化合物を配合してなる熱可塑性
高比重樹脂組成物。 〔ＣＨ＿５（ＣＨ＿２）＿ｍＣＯＯ〕＿ｎＲ…（ I ）
（式中、ｍは２０〜３２の整数、ｎは１または２、Ｒは
アルカリ金属、アルカリ土類金属、あるいは脂肪族炭化
水素基を表わす。）[Scope of Claims] A thermoplastic resin, an acrylic ester copolymer, 90 to 98% by weight of tungsten powder based on the total weight, and 0.01 to 6.5% by weight of tungsten powder represented by the following general formula (I). A thermoplastic high specific gravity resin composition containing a saturated aliphatic carboxylic acid compound. [CH_5(CH_2)_mCOO]_nR…(I)
(In the formula, m is an integer of 20 to 32, n is 1 or 2, and R represents an alkali metal, an alkaline earth metal, or an aliphatic hydrocarbon group.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010156A JPH0735459B2 (en) | 1990-01-18 | 1990-01-18 | Thermoplastic high specific gravity resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010156A JPH0735459B2 (en) | 1990-01-18 | 1990-01-18 | Thermoplastic high specific gravity resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03215566A true JPH03215566A (en) | 1991-09-20 |
| JPH0735459B2 JPH0735459B2 (en) | 1995-04-19 |
Family
ID=11742416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010156A Expired - Lifetime JPH0735459B2 (en) | 1990-01-18 | 1990-01-18 | Thermoplastic high specific gravity resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735459B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003004892A (en) * | 2001-04-16 | 2003-01-08 | Kanebo Ltd | Radiation shielding container |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191254A (en) * | 1984-10-12 | 1986-05-09 | Seiko Epson Corp | Wrist watch case |
| JPS61254661A (en) * | 1985-05-07 | 1986-11-12 | Seiko Epson Corp | Surface part composition for clock |
-
1990
- 1990-01-18 JP JP2010156A patent/JPH0735459B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6191254A (en) * | 1984-10-12 | 1986-05-09 | Seiko Epson Corp | Wrist watch case |
| JPS61254661A (en) * | 1985-05-07 | 1986-11-12 | Seiko Epson Corp | Surface part composition for clock |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003004892A (en) * | 2001-04-16 | 2003-01-08 | Kanebo Ltd | Radiation shielding container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735459B2 (en) | 1995-04-19 |
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