JPH0241360A - Resin composition - Google Patents
Resin compositionInfo
- Publication number
- JPH0241360A JPH0241360A JP19142788A JP19142788A JPH0241360A JP H0241360 A JPH0241360 A JP H0241360A JP 19142788 A JP19142788 A JP 19142788A JP 19142788 A JP19142788 A JP 19142788A JP H0241360 A JPH0241360 A JP H0241360A
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- resin composition
- copolyamide
- water absorption
- mol
- 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.)
- Pending
Links
- 239000011342 resin composition Substances 0.000 title claims abstract description 23
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 29
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims abstract description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 10
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims abstract description 10
- IGSBHTZEJMPDSZ-UHFFFAOYSA-N 4-[(4-amino-3-methylcyclohexyl)methyl]-2-methylcyclohexan-1-amine Chemical compound C1CC(N)C(C)CC1CC1CC(C)C(N)CC1 IGSBHTZEJMPDSZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 238000010521 absorption reaction Methods 0.000 abstract description 19
- 230000000704 physical effect Effects 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
- 238000002156 mixing Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 229920002292 Nylon 6 Polymers 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000004952 Polyamide Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 3-methylcyclohexyl Chemical group 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は耐熱性を損なうことなく吸水による寸法および
物性変化を著しく軽減せしめた成形用樹脂組成物に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a molding resin composition that significantly reduces changes in dimensions and physical properties due to water absorption without impairing heat resistance.
（従来の技術）
ナイロン６６の吸水による寸法お２よび物性変化を防止
する試みは幅広く行われている。例えばナイロン６６に
ガラス繊維に代表される無機質を配合する方法、疎水性
のポリオレフィン類をブレンドあるいはアロイ化する方
法、アモルファスナイロンをブレンドあるいはアロイ化
する方法などである。(Prior Art) A wide range of attempts have been made to prevent changes in dimensions and physical properties of nylon 66 due to water absorption. Examples include a method of blending nylon 66 with an inorganic material such as glass fiber, a method of blending or alloying hydrophobic polyolefins, and a method of blending or alloying amorphous nylon.
しかし、これらの方法では一方でナイロン６６の重要な
特性が損なわれるという問題点があった。However, these methods have the problem that important properties of nylon 66 are impaired.
例えばガラス繊維に代表される無機質を配合する方法で
はナイロン６６特有の靭性が失われ、成形材料としては
脆くなり、また外観が損なわれたり。For example, if an inorganic material such as glass fiber is added, the toughness characteristic of nylon 66 is lost, the material becomes brittle as a molding material, and the appearance is impaired.
成形収縮や物性の異方性が著しくなるという問題点があ
った。また、疎水性のポリオレフィン類をブレンドある
いはアロイ化する方法では耐熱性が低下し、ウェルド強
度の低下が認められる。またアモルファスナイロンをブ
レンドあるいはアロイ化する方法では耐熱性が低下し、
熱収縮率が大きくなる。しかも吸水による寸法および物
性の変化を防止する効果は著しいものではなかった。There were problems in that molding shrinkage and anisotropy of physical properties became significant. Furthermore, in the method of blending or alloying hydrophobic polyolefins, heat resistance is lowered and weld strength is lowered. In addition, methods that blend or alloy amorphous nylon reduce heat resistance,
Heat shrinkage rate increases. Moreover, the effect of preventing changes in dimensions and physical properties due to water absorption was not significant.
ナイロン６６は高い熱変形温麿と優れた力学特性および
耐薬品性を有し、エンジニアリングプラスチックスとし
てすでに電気、自動車分野などを中心にして幅広く用い
られている。それだけにいっそうナイロン６６の吸水に
よる寸法および物性変化を防止する方法が各方面から望
まれていたのであるが、上述の如く、これまでの技術で
はたとえ吸水による寸法や物性の変化が有効に防止され
ていても、他方でナイロン６６の重要な他の物性が損な
われていたり、その効果が不充分であったのが実情であ
る。Nylon 66 has high thermal deformation resistance, excellent mechanical properties, and chemical resistance, and is already widely used as an engineering plastic, mainly in the electrical and automobile fields. For this reason, there has been a desire from various quarters for a method to prevent changes in dimensions and physical properties of nylon 66 due to water absorption, but as mentioned above, existing techniques have not been able to effectively prevent changes in dimensions and physical properties due to water absorption. However, the reality is that other important physical properties of nylon 66 are impaired or the effects are insufficient.
（発明が解決しようとす・る課題） 従って本発明の目的はナイロン６６の重要な物性。(Problem that the invention seeks to solve) Therefore, the object of the present invention is to investigate the important physical properties of nylon 66.
特に耐熱性を損なうことなく、吸水による寸法や物性の
変化を防止することにある。またそれにより有用な成形
用材料を提供することにある。In particular, the objective is to prevent changes in dimensions and physical properties due to water absorption without impairing heat resistance. Another object of the present invention is to provide a useful molding material.
（課題を解決するための手段）
本発明者等はナイロン６６に対して上記課題を解決する
ために鋭意研究を重ねた結果、ナイロン６６に特定の共
重合ナイロンを特定量配合せしめることにより１本発明
の目的がことごとく満足されることを見出し本発明に到
達したものである。(Means for Solving the Problem) As a result of extensive research into nylon 66 in order to solve the above problems, the present inventors have found that by blending a specific amount of a specific copolymerized nylon with nylon 66, one The inventors have arrived at the present invention by discovering that all of the objects of the invention are satisfied.
すなわち本発明は、（ａ）ナイロン６６が９５〜６５重
量％と、（ｂ）イソフタル酸５０〜１０モル％とテレフ
タル酸０〜４０モル％とヘキサメチレンジアミン４５〜
５モル％とビス（４−アミノ−３−メチルシクロヘキシ
ル）メタン５〜４５モル％とから得られる共重合ポリア
ミドが５〜３５重景％とからなる樹脂組成物に関するも
のである。That is, the present invention includes (a) 95 to 65% by weight of nylon 66, (b) 50 to 10 mol% of isophthalic acid, 0 to 40 mol% of terephthalic acid, and 45 to 45% of hexamethylene diamine.
The present invention relates to a resin composition comprising 5 to 35% by weight of a copolyamide obtained from 5 to 45 mol% of bis(4-amino-3-methylcyclohexyl)methane.
のちに実施例において具体的に説明するが２本発明の樹
脂組成物においては吸水による寸法変化が特異的に改良
されており、しかも耐熱性がそのまま維持されている。As will be specifically explained later in Examples, in the resin composition of the present invention, dimensional change due to water absorption is specifically improved, and heat resistance is maintained as is.
また予想に反して熱収縮率も大きく低下している。この
ことは全く驚くべきことであり、ナイロン６６と特定の
共重合ポリアミドを特定量配合してはじめて認められる
現象である。例えばナイロン６に同じ共重合ポリアミド
を配合してもこのような現象は見出されなく、ナイロン
６６に対し当該共重合ポリアミドを一定量を越して配合
せしめた場合にもこのような現象は見出されない。Contrary to expectations, the thermal shrinkage rate also decreased significantly. This is completely surprising, and is a phenomenon that can only be observed when a specific amount of nylon 66 and a specific copolyamide are blended. For example, such a phenomenon is not found even when the same copolyamide is blended with nylon 6, and such a phenomenon is not found even when a certain amount of the copolyamide is blended with nylon 66. Not done.
本発明で用いられるナイロン６６はヘキサメチレンジア
ミンとアジピン酸とから得られるポリヘキサメチレンア
ジパミドをいう。ナイロン６６は公知の方法で製造する
ことができる。Nylon 66 used in the present invention refers to polyhexamethylene adipamide obtained from hexamethylene diamine and adipic acid. Nylon 66 can be manufactured by a known method.
本発明で用いられるナイロン６６の分子量については特
に制限はないが、３０℃、９６％硫酸中、 Ｉｇ／ｄｊ
！における相対粘度が２．０から５．０にあるものが好
ましく用いられる。There is no particular restriction on the molecular weight of nylon 66 used in the present invention, but Ig/dj in 96% sulfuric acid at 30°C
! Those having a relative viscosity of 2.0 to 5.0 are preferably used.
本発明で用いられる共重合ポリアミドは、イソフタル酸
５０〜１０モル％とテレフタル酸０〜４０モル％とヘキ
サメチレンジアミン４５〜５モル％とビス（４−アミノ
−３−メチルシクロヘキシル）メタン５〜４５モル％と
から得られるものである。このうちビス（４−アミノ−
３−メチルシクロヘキシル）メタンのモル％が得られる
共重合ポリアミドのガラス転移温度に大きな影響を与え
る。ビス（４−アミノ−３−メチルシクロヘキシル）メ
タンが５モル％未満では、ガラス転移温度が低すぎて本
発明の樹脂組成物の成分としては好ましくない。また、
ビス（４−アミノ−３−メチルシクロヘキシル）メタン
が４５モル％を越えるとガラス転移温度が高くなりすぎ
て９本発明の樹脂組成物を製造する際に支障をきたすこ
とがある。The copolyamide used in the present invention includes 50 to 10 mol% of isophthalic acid, 0 to 40 mol% of terephthalic acid, 45 to 5 mol% of hexamethylene diamine, and 5 to 45 mol% of bis(4-amino-3-methylcyclohexyl)methane. % by mole. Of these, bis(4-amino-
The mole percentage of 3-methylcyclohexyl)methane has a significant influence on the glass transition temperature of the resulting copolyamide. If the amount of bis(4-amino-3-methylcyclohexyl)methane is less than 5 mol%, the glass transition temperature will be too low, making it undesirable as a component of the resin composition of the present invention. Also,
If the amount of bis(4-amino-3-methylcyclohexyl)methane exceeds 45 mol%, the glass transition temperature will become too high, which may cause problems in producing the resin composition of the present invention.
本発明で用いられる共重合ポリアミドは公知の方法によ
って製造される。例えば特公昭４６−４１０２４号公報
の方法のように、ジアミン成分とジカルボン酸成分とを
最初水中で反応させ塩をまず生成し。The copolyamide used in the present invention is produced by a known method. For example, as in the method disclosed in Japanese Patent Publication No. 46-41024, a diamine component and a dicarboxylic acid component are first reacted in water to form a salt.
次いでこれを濃縮しつつ重縮合を行うのが一般的である
。塩溶液は好ましくは最初密閉したオートクレーブ中で
２００°Ｃから３５０°Ｃの範囲で反応圧力下で前重合
させ９次いで圧力を放出し重縮合を平衡に達するまで大
気圧下又は減圧下に反応を行う。Next, it is common to perform polycondensation while concentrating this. The salt solution is preferably first prepolymerized in a closed autoclave at a temperature ranging from 200° C. to 350° C. under reaction pressure, and then the pressure is released and the reaction is allowed to proceed under atmospheric or reduced pressure until the polycondensation reaches equilibrium. conduct.
本発明に用いる共重合ポリアミドは、樹脂組成物の耐熱
性を損なわないために１００ ’Ｃ以上のガラス転移温
度をもつことが好ましい。ガラス転移温度は一般的な示
差熱分析計で測定することができる。また良好な物性を
得るためには共重合ポリアミドの相対粘度（２０°Ｃ，
ｍ−クレゾール中、 Ｉｇ／ｃＲ１で測定）は１．２〜
３．０の範囲にあることが好ましい。The copolyamide used in the present invention preferably has a glass transition temperature of 100'C or higher so as not to impair the heat resistance of the resin composition. Glass transition temperature can be measured with a common differential thermal analyzer. In addition, in order to obtain good physical properties, the relative viscosity of the copolyamide (20°C,
In m-cresol, measured by Ig/cR1) is 1.2~
It is preferably in the range of 3.0.
本発明の樹脂組成物中におけるナイロン６６と共重合ポ
リアミドの組成比（重量比）は共重合ポリアミド／ナイ
ロン６６＝ ５ ／９５〜３５／６５の範囲内にあるこ
とが必要である。共重合ポリアミドの組成比がこれより
も低ければ樹脂組成物の吸水による寸法および物性変化
は効果的に抑制されない。また共重合ポリアミドの組成
比がこの比よりも高くなると吸水による寸法および物性
の変化は効果的に抑制されるが、熱変形温度で示される
耐熱性が低下し、熱収縮率も増大するので好ましくない
。The composition ratio (weight ratio) of nylon 66 and copolyamide in the resin composition of the present invention needs to be within the range of copolyamide/nylon 66=5/95 to 35/65. If the composition ratio of the copolyamide is lower than this, changes in dimensions and physical properties due to water absorption of the resin composition will not be effectively suppressed. In addition, if the composition ratio of the copolyamide is higher than this ratio, changes in dimensions and physical properties due to water absorption will be effectively suppressed, but the heat resistance as indicated by the heat distortion temperature will decrease and the heat shrinkage rate will also increase, so this is not preferred. do not have.
ナイロン６６と共重合ポリアミドの組成比は先に示した
範囲内にあるときに限って、ナイロン６６の耐熱性を損
なうことなく熱収縮率が低下し、かつ吸水による寸法と
物性の変化が大きく抑えられる。Only when the composition ratio of nylon 66 and copolymerized polyamide is within the range shown above, the heat shrinkage rate will be reduced without impairing the heat resistance of nylon 66, and changes in dimensions and physical properties due to water absorption will be greatly suppressed. It will be done.
この特異な効果はナイロン６では認められず。This unique effect was not observed with nylon 6.
ナイロン６６に特有のものである。This is unique to nylon 66.
本発明の樹脂組成物はナイロン６６と共重合ポリアミド
とを混合することにより製造することができる。好まし
くはこれら成分を小さな粒子状で物理的に混合し１次に
適当な溶融押出機、成形機または他の装置を用いて溶融
状態で十分に溶融混合する。この際グリシジル基を含む
変性ポリオレフィンを１０重量％以下の範囲内で配合す
ることにより、物性の安定した樹脂組成物を得ることが
できる。グリシジル基を含む変性ポリオレフィンが存在
しない樹脂組成物では溶融混合能力の低い装置を用いて
製造する場合、力学的特性が低くなることがある。この
範囲内の配合量であればグリシジル基を含む変性ポリオ
レフィンは樹脂組成物の物性に何ら悪影響を与えない。The resin composition of the present invention can be produced by mixing nylon 66 and copolyamide. Preferably, these components are physically mixed in small particulate form and then thoroughly melt mixed in the molten state using a suitable melt extruder, molding machine or other equipment. At this time, by blending a modified polyolefin containing a glycidyl group within a range of 10% by weight or less, a resin composition with stable physical properties can be obtained. A resin composition that does not contain a modified polyolefin containing a glycidyl group may have poor mechanical properties when produced using equipment with low melt-mixing ability. If the amount is within this range, the modified polyolefin containing a glycidyl group will not have any adverse effect on the physical properties of the resin composition.
また本発明の樹脂組成物では必要に応じてガラス繊維、
炭素繊維、カオリン、マイカ、ウオラストナイト、シリ
カ、炭酸カルシウム、タルクなどの無機充填剤を加える
ことができる。これらの充填剤は樹脂組成物の機械的性
質を向上させる目的で、シランカップリング剤などで表
面処理されているものが好ましい。In addition, in the resin composition of the present invention, glass fiber,
Inorganic fillers such as carbon fiber, kaolin, mica, wollastonite, silica, calcium carbonate, talc, etc. can be added. These fillers are preferably surface-treated with a silane coupling agent or the like for the purpose of improving the mechanical properties of the resin composition.
本発明の樹脂組成物においてはさらに熱安定剤。The resin composition of the present invention further includes a heat stabilizer.
酸化防止剤、光安定剤、滑剤、顔料、難燃化剤。Antioxidants, light stabilizers, lubricants, pigments, flame retardants.
可塑剤などの添加剤を加えても良い。Additives such as plasticizers may also be added.
（参考例） 共重合ポリアミド（ＰＡ−１） イソフタル酸４０モル％、テレフタル５！１０モル％。(Reference example) Copolymerized polyamide (PA-1) Isophthalic acid 40 mol%, terephthalic acid 5.10 mol%.
ヘキサメチレンジアミン３５モル％、ビス（４−アミノ
−３−メチルシクロヘキシル）メタン１５モル％の割合
で、これらの原料の１０Ｋｇを５Ｋｇの純水とともに反
応槽に仕込み、窒素で数回反応槽内の空気をパージした
。反応槽の温度を９０°Ｃまで上昇させ約５時間撹拌し
たのち２反応温度を１０時間かけて徐々に２８０°Ｃま
で加圧下（１８バール）に上昇させた。次いで放圧し大
気圧まで圧力を下げた後。10 kg of these raw materials were charged into a reaction tank with 5 kg of pure water at a ratio of 35 mol% hexamethylene diamine and 15 mol% bis(4-amino-3-methylcyclohexyl)methane, and the reaction tank was purged several times with nitrogen. The air was purged. After raising the temperature of the reactor to 90°C and stirring for about 5 hours, the temperature of the two reactions was gradually raised to 280°C under pressure (18 bar) over a period of 10 hours. Then, the pressure is released and the pressure is lowered to atmospheric pressure.
さらに同じ温度で６時間重縮合を行った。反応終了後、
生成した共重合ポリアミドを反応槽から払い出し切断し
てペレットを得た。Polycondensation was further carried out at the same temperature for 6 hours. After the reaction is complete,
The produced copolyamide was discharged from the reaction tank and cut to obtain pellets.
得られたペレットの相対粘度（前述と同一の測定法）は
１．５０であった。この共重合ポリアミドをＰＡ−１と
する。The relative viscosity of the pellets obtained (measured using the same method as described above) was 1.50. This copolyamide is designated as PA-1.
（実施例）
実施例Ｉ、２．比較例１〜６
ナイロン６（ユニチカ社製、 Ａ１０３０１１ＲＬ ）
とナイロン６６ （ＩＣｒ社製、マラニールＡ１２５
）と共重合ポリアミドＰへ−１（参考例で示した共重合
ポリアミド）とを表１の配合組成で混合した。これらを
９０″Ｃで１６時間真空乾燥し、２軸の押出機を用いて
表１の温度条件で溶融混合し、切断してペレットを得た
。得られたペレットを再び９０“Ｃで１６時間真空乾燥
し２表１で示した条件で射出成形法により測定用のテス
トピース（厚さ３ 、２ｍｍ 、 幅１２．７ｍｍ。(Example) Example I, 2. Comparative Examples 1 to 6 Nylon 6 (manufactured by Unitika, A103011RL)
and nylon 66 (manufactured by ICr, Maranyl A125
) and copolyamide P-1 (copolyamide shown in Reference Example) were mixed in the composition shown in Table 1. These were vacuum dried at 90"C for 16 hours, melt-mixed using a twin-screw extruder under the temperature conditions shown in Table 1, and cut to obtain pellets. The obtained pellets were heated again at 90"C for 16 hours. A test piece (thickness: 3.2 mm, width: 12.7 mm) was dried in vacuum and then injection molded under the conditions shown in Table 1.
長さ１２７ｍｍ ）を得た。A length of 127 mm) was obtained.
このテストピースを用いて荷重４．６ Ｋｇ／ｃｍ２（
小荷重）および１６．５Ｋｇ／ｃｍ” （大荷重）の
条件で熱変形温度を測定した。結果を表２に掲げた。Using this test piece, a load of 4.6 Kg/cm2 (
The heat distortion temperature was measured under the conditions of 16.5 Kg/cm" (small load) and 16.5 Kg/cm" (large load). The results are listed in Table 2.
同じく表２に成形収縮率と１２０°Ｃで２時間熱処理し
たときの熱収縮率とを掲げた。測定は長さ方向で行った
。表３には５０°Ｃの水中にテストピースをそれぞれ２
０時間、５０時間、１２０時間浸漬し、吸水量１曲げ弾
性率および寸法変化の測定値を示した。曲げ弾性率はＡ
ＳＴＭ ０７９０に基づいて測定した。Similarly, Table 2 lists the molding shrinkage rate and the heat shrinkage rate when heat treated at 120°C for 2 hours. Measurements were taken in the longitudinal direction. Table 3 shows two test pieces each placed in water at 50°C.
The samples were immersed for 0 hours, 50 hours, and 120 hours, and the measured values of water absorption, flexural modulus, and dimensional change were shown. Flexural modulus is A
Measured based on STM 0790.
表１
配合上υ糺 ペレット化条件および成形条件表２
熱変形温度
表３
吸水処理による吸水量１寸法変化合よび曲げ弾性率（発
明の効果）
表２に示したように本発明の樹脂組成物ではナイロン６
６単独の場合の熱変形温度がほとんどそのまま維持され
ているのに６対し、共重合ポリアミドを特定量以上含む
もの（比較例１）や、ナイロン６と共重合ポリアミドと
の樹脂組成物（比較例４〜６）では小荷重熱変形温度の
著しい低下が認められる。Table 1 Pelletization conditions and molding conditions Table 2 Heat deformation temperature Table 3 Water absorption amount due to water absorption treatment 1 dimensional change and flexural modulus (effects of the invention) As shown in Table 2, the resin composition of the present invention So nylon 6
Although the heat distortion temperature of nylon 6 alone is maintained almost unchanged, in contrast to 6, which contains a specific amount or more of copolyamide (Comparative Example 1) and a resin composition of nylon 6 and copolyamide (Comparative Example 4 to 6), a significant decrease in the small load heat distortion temperature was observed.
同じく表２に成形収縮率および熱収縮率が示されている
が１本発明の樹脂組成物はナイロン６Ｇ単独（比較例２
）の場合に比べて成形収縮率、熱収縮率ともに大きく低
下している。ナイロン６に共重合ポリアミドを配合した
例では（比較例５．６）熱収縮率の著しい増大が認めら
れる。Similarly, Table 2 shows the molding shrinkage rate and heat shrinkage rate. 1 The resin composition of the present invention was nylon 6G alone (Comparative Example 2
) Both the molding shrinkage rate and the heat shrinkage rate are significantly lower than in the case of . In the examples in which copolymerized polyamide was blended with nylon 6 (Comparative Example 5.6), a significant increase in heat shrinkage rate was observed.
吸水処理による吸水量１寸法変化および曲げ弾性率につ
いても本発明の樹脂組成物はナイロン６６単独の場合に
比べて、吸水による寸法変化および曲げ弾性率の低下が
大きく抑えられている。これは単に吸水量の減少だけか
らは到底説明できない程の著しい効果である。With regard to the dimensional change in water absorption amount and flexural modulus due to water absorption treatment, the resin composition of the present invention greatly suppresses the dimensional change and decrease in flexural modulus due to water absorption, compared to the case of nylon 66 alone. This is a remarkable effect that cannot be explained simply by a reduction in water absorption.
以上具体的に例示した如く８本発明の樹脂組成物におい
てはナイロン６６の熱変形温崩に代表される耐熱性を損
なうことなく、成形収縮率、熱収縮率が低く抑えられて
おり、熱的寸法安定性が向上している。As specifically exemplified above, the resin composition of the present invention has a low molding shrinkage rate and a low thermal shrinkage rate without impairing the heat resistance typified by the thermal deformation and thermal collapse of nylon 66. Improved dimensional stability.
また吸水による寸法変化および曲げ弾性率の低下も著し
く減少しており、成形用材料として優れた特性を有して
いるのが明らかである。In addition, dimensional changes and decreases in flexural modulus due to water absorption are significantly reduced, and it is clear that the material has excellent properties as a molding material.
特許出願人 ユニチカ株式会社Patent applicant: Unitika Co., Ltd.
Claims (1)
）イソフタル酸５０〜１０モル％とテレフタル酸０〜４
０モル％とヘキサメチレンジアミン４５〜５モル％とビ
ス（４−アミノ−３−メチルシクロヘキシル）メタン５
〜４５モル％とから得られる共重合ポリアミドが５〜３
５重量％とからなる樹脂組成物。(1) (a) 95 to 65% by weight of nylon 66; (b)
) isophthalic acid 50-10 mol% and terephthalic acid 0-4
0 mol% and hexamethylenediamine 45-5 mol% and bis(4-amino-3-methylcyclohexyl)methane 5
The copolyamide obtained from ~45 mol% is 5~3
A resin composition consisting of 5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19142788A JPH0241360A (en) | 1988-07-29 | 1988-07-29 | Resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19142788A JPH0241360A (en) | 1988-07-29 | 1988-07-29 | Resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241360A true JPH0241360A (en) | 1990-02-09 |
Family
ID=16274434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19142788A Pending JPH0241360A (en) | 1988-07-29 | 1988-07-29 | Resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119994A (en) * | 1983-12-01 | 1985-06-27 | 松下電器産業株式会社 | Clothing dryer |
| US5206310A (en) * | 1990-01-29 | 1993-04-27 | Kenji Yasue | Polyamide resin composition |
| JP2007182071A (en) * | 2005-12-08 | 2007-07-19 | Toray Ind Inc | Aluminum alloy-resin composite and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270753A (en) * | 1988-05-20 | 1990-03-09 | Basf Ag | Thermoplastic molding material |
-
1988
- 1988-07-29 JP JP19142788A patent/JPH0241360A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270753A (en) * | 1988-05-20 | 1990-03-09 | Basf Ag | Thermoplastic molding material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119994A (en) * | 1983-12-01 | 1985-06-27 | 松下電器産業株式会社 | Clothing dryer |
| US5206310A (en) * | 1990-01-29 | 1993-04-27 | Kenji Yasue | Polyamide resin composition |
| JP2007182071A (en) * | 2005-12-08 | 2007-07-19 | Toray Ind Inc | Aluminum alloy-resin composite and method for producing the same |
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