KR100373179B1 - Polyamide resin composition for extrusion molding of tubing - Google Patents
Polyamide resin composition for extrusion molding of tubing Download PDFInfo
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- KR100373179B1 KR100373179B1 KR1019960066797A KR19960066797A KR100373179B1 KR 100373179 B1 KR100373179 B1 KR 100373179B1 KR 1019960066797 A KR1019960066797 A KR 1019960066797A KR 19960066797 A KR19960066797 A KR 19960066797A KR 100373179 B1 KR100373179 B1 KR 100373179B1
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- Prior art keywords
- polyamide resin
- resin composition
- weight
- tubing
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- 229920006122 polyamide resin Polymers 0.000 title claims abstract description 25
- 239000011342 resin composition Substances 0.000 title claims abstract description 15
- 238000001125 extrusion Methods 0.000 title claims abstract description 14
- 150000008331 benzenesulfonamides Chemical class 0.000 claims abstract description 9
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract 3
- 238000000465 moulding Methods 0.000 claims description 15
- 239000004014 plasticizer Substances 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000000155 melt Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 150000001718 carbodiimides Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- GMPBTLCUTONNNA-UHFFFAOYSA-N P(OC1=C(C=CC=C1)CC(CCCCCC)CCCC)(OC1=C(C=CC=C1)CC(CCCCCC)CCCC)OC1=C(C=CC=C1)CC(CCCCCC)CCCC Chemical compound P(OC1=C(C=CC=C1)CC(CCCCCC)CCCC)(OC1=C(C=CC=C1)CC(CCCCCC)CCCC)OC1=C(C=CC=C1)CC(CCCCCC)CCCC GMPBTLCUTONNNA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- JGEMYUOFGVHXKV-UPHRSURJSA-N malealdehyde Chemical compound O=C\C=C/C=O JGEMYUOFGVHXKV-UPHRSURJSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/43—Compounds containing sulfur bound to nitrogen
- C08K5/435—Sulfonamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
본 발명은 압출 튜빙 성형용 폴리아미드 수지 조성물에 관한 것으로, 보다 상세하게는 폴리아미드 수지에 이피러버(에틸렌프로필렌디엔모노머 고무)와 가소제를 도입, 수지 자체의 용융세기를 증가시키므로서 압출기를 통해 압출되는 수지의 블로잉을 통하여 튜브나 파이프 또는 이와 유사한 형상의 제품을 만들 수 있는 폴리아미드 수지 조성물에 관한 것이다.The present invention relates to a polyamide resin composition for extrusion tubing molding, and more particularly, to introduce an extruder (ethylene propylene diene monomer rubber) and a plasticizer into the polyamide resin, and to increase the melt strength of the resin itself, extruded through an extruder The present invention relates to a polyamide resin composition capable of producing a tube or pipe or a similar shaped product through blowing of the resin.
일반적으로 폴리아미드 수지는 그 기계적 특성이 우수하여 화이버, 모노필라멘트, 쉬트 등의 사출 및 압출 소재로서 많이 사용되고 있다.In general, polyamide resins have excellent mechanical properties, and are widely used as injection and extrusion materials such as fibers, monofilaments, sheets, and the like.
그러나 기존의 폴리아미드 수지는 굴곡탄성율이 높기 때문에 파이프, 튜브, 화이버 등 속이빈 용기를 압출이나 사출 성형하는 데에는 한계가 있었다.However, the existing polyamide resin has a high flexural modulus, so there is a limit to extrusion or injection molding hollow containers such as pipes, tubes, and fibers.
플라스틱 파이프나 튜브는 부식이 없고 가벼우며 또한 유연하다. 따라서 이들의 소재는 성형시 적당한 용융 강도와 유연성을 가져야 한다. 용융 강도는 성형성과 파이프나 튜브(성형품)의 두께를 균일하게 하는 데에 관여하며, 유연성은 성형된 파이프나 튜브의 취급성에 크게 관여한다. 파이프나 튜브용 소재로서의 플라스틱은 올레핀 고분자를 중심으로 그 개발이 꾸준하게 이루어져 현재에는 다양한 형상의 제품을 성형할 수 있게 되었다.Plastic pipes and tubes are corrosion free, light and flexible. Therefore, their materials must have adequate melt strength and flexibility in molding. Melt strength is involved in moldability and uniformity of the pipe or tube (molded product), and flexibility is largely involved in handleability of the molded pipe or tube. Plastic as a material for pipes and tubes has been steadily developed around olefin polymers, and now it is possible to mold products of various shapes.
최근 엔지니어링 플라스틱으로서 폴리아미드 수지의 가스 베리어 특성을 활용한 개발이 활발하게 이루어지고 있다. 그러나 대부분의 경우 튜브나 파이프의 소재는 나이론-12를 응용한 것이고, 아직까지 소재로서 나이론-6을 이용한 것은 거의 없는 실정이다.Recently, developments utilizing the gas barrier properties of polyamide resins as engineering plastics have been actively conducted. However, in most cases, the material of the tube or pipe is the application of nylon-12, and so far few materials use nylon-6 as a material.
미국 특허 제5,408,000호에서는 폴리아미드 수지를 튜빙 성형이 가능토록 하기 위하여 여러 종류의 에틸렌 코폴리머 및 변형된 폴리테트라프로로에틸렌을 사용하는 방법에 제시된 바 있으나, 이는 용융 강도가 향상되어 압출 블로잉은 가능하나 튜브류의 용도로서 유연성이 부족하다.U.S. Patent No. 5,408,000 describes a method of using various types of ethylene copolymers and modified polytetraproethylene to make tubing molding polyamide resins, but it is possible to extrude blow due to improved melt strength. However, there is a lack of flexibility as a use of tubes.
또한 미국 특허 4,987,168호에서는 나이론-6에 폴리에틸렌/폴리프로필렌 코폴리머(내충격제), 카프로락탐(가소제), 카보디이미드(증점제)를 사용하여 유연성이 향상된 튜브로서의 조성을 제안하고 있으나, 가소제로 첨가한 카프로락탐이 상온에서 마이그레이션 현상은 거의 발생하지 않으나 상온보다 고온인 온수 분위기에서 마이그레이션 현상이 발생하고 카보디이미드의 첨가로 용융 강도는 증진되었으나 성형시 분산성 부족 등에 의해 균일한 두께로 제품을 성형하기 어려우며, 유연성 또한 아직 부족하다.In addition, U.S. Patent 4,987,168 proposes a composition with improved flexibility using a polyethylene / polypropylene copolymer (impacting agent), caprolactam (plasticizer) and carbodiimide (thickener) in nylon-6, but added as a plasticizer. Although caprolactam hardly migrates at room temperature, migration occurs in a hot water atmosphere that is higher than room temperature, and melt strength is enhanced by the addition of carbodiimide. Difficult, yet lacks flexibility.
본 발명은 상기 종래 기술의 문제점을 해결하기 위한 것으로, 그 목적은 굴곡탄성율이 우수하여 압출 튜빙 성형이 가능하고 속이 빈 제품으로서 적절한 유연성을 갖는 압축 튜빙 성형용 폴리아미드 수지 조성물을 제공하는 데에 있다.The present invention is to solve the problems of the prior art, an object of the present invention is to provide a polyamide resin composition for compression tubing molding having excellent flexural modulus, which is capable of extrusion tubing molding and has a suitable flexibility as a hollow product. .
상기 본 발명의 목적을 달성하기 위한 압출 튜빙 성형용 폴리아미드 수지 조성물은, 상대점도 3∼4인 나이론-6 100중량부에 대하여 벤젠설폰아미드 유도체 5∼10 중량부와 에틸렌프로필렌디엔모노머 고무 5∼15중량부가 함유된 데에 그 특징이 있다.The polyamide resin composition for extrusion tubing molding for achieving the above object of the present invention, 5 to 10 parts by weight of benzenesulfonamide derivatives and 5 to ethylene propylene diene monomer rubber with respect to 100 parts by weight of nylon-6 having a relative viscosity of 3 to 4 It is characterized by containing 15 parts by weight.
상기 벤젠설폰아미드유도체는 하기 식1과 식2로 표시되는 가소제를 1:2∼1:3의 중량비로 혼합 사용한 것이 가장 바람직하다.The benzene sulfonamide derivatives are most preferably used by mixing the plasticizers represented by the following formulas 1 and 2 at a weight ratio of 1: 2 to 1: 3.
[식1][Equation 1]
[식2][Equation 2]
즉, 본 발명의 수지 조성물은 폴리아미드 수지에 이피러버와 가소제를 도입하여 수지 자체의 용융 세기를 증가시키므로서 압출기를 통해 압출되는 수지를 블로잉을 통하여 튜브나 파이프의 형상을 만들 수 있도록 한 것이다.That is, the resin composition of the present invention is to introduce a rubber and a plasticizer to the polyamide resin to increase the melt strength of the resin itself to make the shape of the tube or pipe through blowing the resin extruded through the extruder.
구체적으로, 본 발명에서는 상대 점도가 높은 폴리아미드 수지를 사용하고, 유연성의 향상을 위하여 흔히 사용되는 벤젠설폰아미드 유도체를 가소제로 사용하였으며, 내충격성의 증진과 용융 점도의 향상을 위해 이피러버를 사용하여 유연성이 우수하고 압출 튜빙 성형이 가능한 폴리아미드 수지 조성물을 제조하였다.Specifically, in the present invention, a polyamide resin having a high relative viscosity is used, and a benzenesulfonamide derivative commonly used to improve flexibility is used as a plasticizer, and an epi rubber is used to improve impact resistance and improve melt viscosity. A polyamide resin composition having excellent flexibility and capable of extrusion tubing molding was prepared.
이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명에 있어서, 베이스 수지인 폴리아미드 수지로는 지방족 폴리아미드 수지인 나일론-6를 사용하는데, 상대점도 3∼4(황산법), 용융지수 7∼9 (240℃, 2160ｇ 하중에서 노즐이 2㎜)인 것이 좋다. 이와 같이 통상의 폴리아미드 수지를 사용하지 않고 고점도의 폴리아미드 수지를 사용한 이유는, 압출 튜브 성형을 위해 증점제를 사용하면 이의 반응 및 분산이 잘 이루어지게 하기 위하여 제조 조건과 성형 조건을 맞추는데 상당한 주의가 필요한데 반해 고점도의 폴리아미드 수지를 직접 사용하면 이러한 문제가 없어지는 것이다.In the present invention, as the polyamide resin which is a base resin, nylon-6, which is an aliphatic polyamide resin, is used. The relative viscosity is 3 to 4 (sulfuric acid method), and the melt index is 7 to 9 (at 240 ° C. and 2160 g load, and the nozzle is 2 mm). It is good to be). The reason why high viscosity polyamide resins are used instead of conventional polyamide resins is that the use of thickeners for extrusion tube molding requires considerable care to match the manufacturing conditions and molding conditions in order to achieve good reaction and dispersion thereof. On the other hand, the use of high viscosity polyamide resin directly eliminates this problem.
또한 가소제는 유연성을 부여하기 위해 첨가하는 것으로, 상기 식1 및 식2로 표시되는 벤젠설폰아미드 유도체 2 가지를 혼합 적용하였다.In addition, a plasticizer is added to impart flexibility, and two benzenesulfonamide derivatives represented by Formulas 1 and 2 were mixed and applied.
이와 같이 가소제로서 두 성분을 혼합하여 적용한 이유는, 단독 적용시 보다 그 유연성에서 효과가 좋기 때문이며, 바람직한 혼합비율은 가소제1:가소제2 = 1:2∼1:3 정도가 적당하다. 전체적으로 폴리아미드 수지 100중량부에 대하여 5∼10 중량부 혼합하는 것이 적당하다. 이러한 가소제는 상기 함량보다 적으면 유연성 개선을 기대하기 어려우며 함량이 많으면 물성 저하는 물론 용융지수가 떨어진다. 또한 식1의 가소제를 단독 사용할 때에 비해 식2의 가소제를 혼합하여 사용하는 것이 효과가 좋으며, 식2의 가소제를 단독으로 사용하면 그 첨가량이 많아도 원하는 유연성을 얻기 어렵다. 다른 비율에서보다도 그 효과를 최대로 하기에는 1:2 의 혼합비율이 적당하다.The reason why the two components are mixed and applied as a plasticizer is that the effect is better in flexibility than when applied alone, and the preferred mixing ratio is about plasticizer 1: plasticizer 2 = 1: 2 to 1: 3. It is suitable to mix 5-10 weight part with respect to 100 weight part of polyamide resin as a whole. If the plasticizer is less than the above content, it is difficult to expect the improvement of flexibility, and if the content is high, the physical property deteriorates and the melt index falls. In addition, it is more effective to mix and use the plasticizer of Formula 2 compared to when using the plasticizer of Formula 1 alone, and the desired flexibility is hard to be obtained even when the plasticizer of Formula 2 is used alone. A mixing ratio of 1: 2 is suitable to maximize the effect than at other ratios.
또한 내충격제 및 용융지수 안정을 위해 사용하는 에틸렌프로필렌디엔모노머 고무는 말레익안하이드라이드가 0.7중량% 그라프트된 폴리올레피닉일라스토머인 엑손 케미칼사의 엑셀러 VA- 1830을 사용하는 것이 좋다. 이의 함량은 폴리아미드 수지 100중량부에 대해 5∼15중량부가 적당하다. 이를 과량 투입하면 용융지수가 증가하여 튜브의 성형이 곤란하며 소량 투입하면 유연성이 떨어지고 용융지수가 증가하여 적당치 못하다.In addition, the ethylene propylene diene monomer rubber used for the impact resistance and melt index stability is recommended to use the accelerator VA-1830 of Exxon Chemical Co., Ltd. which is a polyolefinic elastomer with 0.7% by weight of maleic hydride. Its content is suitably 5 to 15 parts by weight based on 100 parts by weight of polyamide resin. If it is excessively added, the melt index increases, which makes it difficult to form the tube. If a small amount is added, the flexibility is reduced and the melt index increases, which is not suitable.
소재로서 본 발명의 폴리아미드 수지 조성물을 가지고 1축 압출기를 사용하여 250℃에서 튜브를 성형하였더니, 유동지수가 2∼7ｇ/10분, 특히 3∼5g/10분 이었을 때 성형이 월할히 이루어졌다. 용융지수가 작으면 압출기에 너무 많은 부하가 걸리고, 용융지수가 크면 튜브 형상으로 성형이 불가하였다.When the tube was formed at 250 ° C using a single screw extruder with the polyamide resin composition of the present invention as a raw material, the molding was excellent when the flow index was 2 to 7 g / 10 minutes, especially 3 to 5 g / 10 minutes. lost. If the melt index is small, too much load is applied to the extruder, and if the melt index is large, molding into a tube shape is impossible.
또한 굴곡탄성율(유연성)이 크면 튜브 성형후 휨 등의 변형이 어려우며 단단하여 튜브의 용도로는 적합하지 못하였다.In addition, if the flexural modulus (flexibility) is large, deformation such as bending after forming the tube is difficult and hard, and thus it is not suitable for use of the tube.
결국, 본 발명의 목적에 적합한 튜브로서의 특성을 가지려면 소재의 굴곡 탄성율이 7,000㎏/㎠ 이상이면 곤란하며, 6,000㎏/㎠ 이하인 것이 좋다.After all, in order to have the characteristic as a tube suitable for the objective of this invention, when the flexural modulus of a raw material is 7,000 kg / cm <2> or more, it is difficult, and it is good that it is 6,000 kg / cm <2> or less.
2축 압출기를 사용하여 소재로서 본 발명의 수지 조성물을 사용, 튜브를 압출 성형하였다. 각 조성물의 분산 및 이들의 특성을 최대화하기 위하여 투입구가 3개인 압출기를 사용하여 재료를 혼련하고, 1차 투입구를 통하여 나일론과 내열제, 이형제를 블렌딩하여 투입하고, 2차 투입구를 통하여 이피러버를, 3차 투입구를 통하여 벤젠설폰아마이드 유도체를 투입하였다.The tube was extruded using the resin composition of this invention as a raw material using the twin screw extruder. In order to maximize the dispersion of each composition and their properties, materials are kneaded using an extruder having three inlets, blended with nylon, a heat-resistant agent, and a releasing agent through a primary inlet, and an optical rubber is injected through the secondary inlet. The benzene sulfonamide derivative was introduced through the third inlet.
또한 본 발명의 목적을 손상하지 않는 범위내에서 열안정제, 내후제, 대전방지제 등의 첨가제를 필요에 따라 적절히 배합할 수 있다. 이처럼 투입된 원,부원료를 250℃의 2축 압축기를 통과시킨 후 나오는 스트렌드를 냉각수가 담겨있는 냉각조를 통과시켜 냉각시킨 후 커터를 이용하여 칩 형상으로 만들고 건조를 통해 수분을 제거한 후 압출기를 통하여 직경 10㎜, 두께가 1.5 ㎜인 제품을 성형하였다.Moreover, additives, such as a heat stabilizer, a weathering agent, an antistatic agent, can be suitably mix | blended as needed within the range which does not impair the objective of this invention. The raw and subsidiary materials thus added are passed through a twin-screw compressor at 250 ° C, and the strands are cooled by passing through a cooling tank containing cooling water. The cutter is formed into a chip shape and dried to remove moisture and then extruded. A product having a diameter of 10 mm and a thickness of 1.5 mm was molded.
이하, 본 발명을 실시예에 의거하여 더욱 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail based on an Example.
실시예1∼5 및 비교예1∼9Examples 1-5 and Comparative Examples 1-9
하기 표1의 성분과 조성으로 3개의 투입구가 달려있는 이축압축기를 사용하여 제1투입구에는 나일론, 이형제, 내열제를 블렌딩하여 투입하고, 제2투입구에서는 이피러버를, 제3투입구에는 벤젠설폰아마이드 유도체를 투입하였다. 이 방법으로 나이론-6은 250℃의 이축압출기 내에서 용융 혼련하여 칩 상태로 제조하고, 이 칩을 70℃ 온도의 진공 건조기에서 15시간 동안 건조한 후, 유동지수를 측정하였다. 그외에 유연성 등의 물성은 스크류식 사출기를 사용하여 시편을 제작한 후 측정하였다. 그 결과는 표2와 같다.Using a twin-screw compressor with three inlets as shown in Table 1 below, the first inlet was blended with nylon, a release agent, and a heat-resistant agent, and the second inlet was filled with this rubber and benzene sulfonamide at the third inlet. A derivative was added. In this way, nylon-6 was melt-kneaded in a twin screw extruder at 250 ° C. to prepare a chip state, and the chip was dried in a vacuum dryer at 70 ° C. for 15 hours, and then the flow index was measured. In addition, physical properties such as flexibility were measured after fabricating the specimen using a screw injection machine. The results are shown in Table 2.
[표1]Table 1
＊ 내열제 및 이형제는 각각의 조성에 나이론 대비 0.2 중량부 투입함.* Heat resistant agent and release agent were added 0.2 parts by weight of nylon in each composition.
- 내열제: 트리스-(2,4-디터셔리 부틸페닐)-포스파이트/N-N'-헥사메틸렌비스(3,5-디터셔리 부틸-4-하이드록시-하이드로시나마미드) = 1/1 혼합물Heat-resistant: tris- (2,4-dibutyl butylphenyl) -phosphite / N-N'-hexamethylenebis (3,5-dibutyl butyl-4-hydroxy-hydrocinamide) = 1/1 mixture
- 이형제: 에틸렌비스스테아미드Release agent: ethylenebissteamide
물성 측정 항목Property measurement item
1) 인장강도: ASTM D-638에 따라 덤벨-1의 시편을 이용해 측정함.1) Tensile strength: measured using the specimen of Dumbbell-1 according to ASTM D-638.
2) 유연성: ASTM D-790에 따라 굴곡탄성율을 측정함.2) Flexibility: Flexural modulus is measured according to ASTM D-790.
3) 용융지수: 나일론-6은 240℃에서 ASTD D-1238에 따라 M.I.를 평가함.3) Melt Index: Nylon-6 was evaluated for M.I. according to ASTD D-1238 at 240 ° C.
[표2][Table 2]
상기 표2에서 확인되듯이, 본 발명에 의해 제조된 수지 조성물을 사용한 것과 기존의 것에 비교해 볼 때, 굴곡탄성율은 본 발명에 의한 것이 6,000㎏/㎠ 이하인데 반하여 기존 것은 7000㎏/㎠ 이상임을 알 수 있다.As confirmed in Table 2 above, the flexural modulus of the present invention is 6,000 kg / cm 2 or less, whereas the existing ones are 7000 kg / cm 2 or more, compared to those using the resin composition prepared according to the present invention. Can be.
이상에서 상세히 설명한 바와 같이, 본 발명에 따른 압축 튜빙 성형용 폴리아미드 수지 조성물은 굴곡탄성율이 우수하여 압출 튜빙 성형이 가능하고 속이 빈 용기로서의 적절한 유연성을 갖는다.As described in detail above, the polyamide resin composition for compression tubing molding according to the present invention has excellent flexural modulus, which enables extrusion tubing molding and has appropriate flexibility as a hollow container.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59161461A (en) * | 1983-03-04 | 1984-09-12 | Toray Ind Inc | Glass fiber-reinforced polyamide resin composition |
| US5032633A (en) * | 1989-03-18 | 1991-07-16 | Huels Aktiengesellschaft | Thermoplastic molding compositions with high cold impact strength |
| US5252672A (en) * | 1990-12-14 | 1993-10-12 | Bayer Aktiengesellschaft | Polymer blends of polyamides and polymers containing sulfonamide structural units |
| JPH08337716A (en) * | 1995-06-13 | 1996-12-24 | Ube Ind Ltd | Polyamide resin composition and tubular formed product comprising the same |
| JPH08337717A (en) * | 1995-06-13 | 1996-12-24 | Ube Ind Ltd | Polyamide resin composition and tubular formed product comprising the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59161461A (en) * | 1983-03-04 | 1984-09-12 | Toray Ind Inc | Glass fiber-reinforced polyamide resin composition |
| US5032633A (en) * | 1989-03-18 | 1991-07-16 | Huels Aktiengesellschaft | Thermoplastic molding compositions with high cold impact strength |
| US5252672A (en) * | 1990-12-14 | 1993-10-12 | Bayer Aktiengesellschaft | Polymer blends of polyamides and polymers containing sulfonamide structural units |
| JPH08337716A (en) * | 1995-06-13 | 1996-12-24 | Ube Ind Ltd | Polyamide resin composition and tubular formed product comprising the same |
| JPH08337717A (en) * | 1995-06-13 | 1996-12-24 | Ube Ind Ltd | Polyamide resin composition and tubular formed product comprising the same |
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