KR930004281B1 - Aromatic polyester resin composition - Google Patents

Aromatic polyester resin composition Download PDF

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KR930004281B1
KR930004281B1 KR1019890019272A KR890019272A KR930004281B1 KR 930004281 B1 KR930004281 B1 KR 930004281B1 KR 1019890019272 A KR1019890019272 A KR 1019890019272A KR 890019272 A KR890019272 A KR 890019272A KR 930004281 B1 KR930004281 B1 KR 930004281B1
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polyester resin
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aromatic polyester
resin composition
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KR910012068A (en
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김광태
김정락
박병식
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제일합섬 주식회사
이수환
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K3/2279—Oxides; Hydroxides of metals of antimony
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0066—Flame-proofing or flame-retarding additives
    • 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
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/109—Esters; Ether-esters of carbonic acid, e.g. R-O-C(=O)-O-R
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/53—Core-shell polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/902—Core-shell

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The aromatic polester resin compsn. having a good fire ratardance and impact resistance is composed of 100 wt. parts of polyester resin having 0.6-1.2 intrinsic viscosity, 0-70 wt. parts of glass fiber as reinforcing material, 5-30 wt. parts of core- shell type synthetic rubber, 5-30 wt. parts of polycarbonate oligomer of Br-substd. bisphenol-A as fire retardant, 1-15 wt. parts of antimony trioxide (Sb2O3) as fire retardance elevator, and 0.01-2 wt. parts of polytetrafluoroethylene as drip improving agent. The polyester resin comprises 1-5 mol % phenolphthalein and 95-99 mol % butylene glycol as diol segment, and therephthalic acid as diacid segment.

Description

방향족 폴리에스테르 수지 조성물Aromatic Polyester Resin Composition

본 발명은 방향족 폴리에스테르 수지 조성물에 관한 것으로, 더욱 상세하게는 폴리에스테르 수지에 아크릴계 합성고무와 난연제를 혼합하여 내충격성과 난연성이 우수한 제품을 제조하는데 사용되는 폴리 에스테르 수지 조성물에 관한 것이다.The present invention relates to an aromatic polyester resin composition, and more particularly, to a polyester resin composition used to prepare a product excellent in impact resistance and flame resistance by mixing an acrylic synthetic rubber and a flame retardant to a polyester resin.

일반적으로 하기 일반식(I)의 반복 단위를 갖는 폴리알킬렌테레프탈레이트 특히, 폴리에틸렌테레프탈레이트나 폴리부틸렌테레프탈레이트로 대표되는 방향족 폴리에스테르는 그들의 우수한 전기적 성질 및 칫수 안정성으로 인해 전기, 전자기기 부품, 자동차 부품 또는 산업자재 부품등의 산업분야에서 널리 사용되고 있다.Polyalkylene terephthalates generally having repeating units of the general formula (I), in particular aromatic polyesters represented by polyethylene terephthalate or polybutylene terephthalate, are due to their excellent electrical properties and dimensional stability of electrical and electronic components. It is widely used in industrial fields such as automobile parts or industrial material parts.

Figure kpo00001
Figure kpo00001

그러나, 상기와 같은 방향족 폴리에스테르 수지는 노치 충격강도가 취약하여 용도면에서 크게 제한을 받고 있는 실정이므로 이에 대한 개선방법이 꾸준히 연구되고 제안되어 왔다.However, the aromatic polyester resin as described above has been weakly impacted in terms of use due to its weak notch impact strength, and a method for improving the same has been steadily studied and proposed.

즉, 방향족 폴리에스테르 수지 조성물의 내충격성을 향상시키기 위한 기술로서 미국특허 제4,393,153호에는 코아-셀(core-shell)형태의 합성수지를 사용하여 내충격성을 향상시키는 방법이 개시되어 있지만 이 경우에는 난연성에 대한 언급이 전혀 없다.In other words, US Pat. No. 4,393,153 discloses a method for improving impact resistance using core-shell type synthetic resins as a technique for improving impact resistance of aromatic polyester resin compositions. There is no mention of it at all.

또한, 방향족 폴리에스테르 수지를 전기, 전자기기 부품에 사용하기 위해서는 난연성이 요구되는데, 미국특허 제4, 057, 532호에는 중합시에 난연성을 부여하였으며, 미국특허 제4,393,153호에는 방향족 폴리에스테르에 중합후 난연제를 첨가하여 난연성을 획득하였다. 그러나, 이 경우에는 내충격성 향상에 관해서는 전혀 개시되어 있지 않다.In addition, in order to use an aromatic polyester resin in electric and electronic parts, flame retardancy is required. US Patent Nos. 4, 057 and 532 impart flame retardancy at the time of polymerization, and US Patent No. 4,393,153 is polymerized to aromatic polyester. After flame retardant was added to obtain flame retardancy. In this case, however, no improvement in impact resistance is disclosed.

이에 본 발명자들은 방향족 폴리에스테르 수지의 내충격성은 물론 난연성을 향상시키기 위하여 종래의 결점들을 해소시키고자 면밀히 연구한 결과 내충격성과 난연성을 동시에 겸비하고 생산성도 용이한 폴리에스테르 수지 조성물을 얻게 되었다.Accordingly, the present inventors have studied closely to solve the conventional defects in order to improve the impact resistance of the aromatic polyester resin as well as the flame resistance, and as a result, a polyester resin composition having both impact resistance and flame retardancy and easy productivity has been obtained.

즉, 본 발명은 폴리에스테르 수지 중합시 디올 세그먼트로서 에틸렌글리콜과 페놀프탈레인을 테레프탈릭산과 동시에 반응시킨 후 이 수지를 코아-셀 형태의 합성고무와 난연제로는 할로겐 원소가 치환된 폴리카보네이트 올리고머(oligomer)와 폴리테트라플르오로에틸렌을 함께 혼합하여 내충격성은 물론 난연성을 동시에 갖춘 폴리에스테르 수지 조성물을 제공하는데 그 목적이 있다.That is, according to the present invention, a polycarbonate oligomer in which ethylene glycol and phenolphthalein are reacted simultaneously with terephthalic acid as a diol segment during the polymerization of a polyester resin, and the resin is a halogen-substituted polycarbonate oligomer in the core-cell form. And polytetrafluoroethylene are mixed together to provide a polyester resin composition having both impact resistance and flame retardancy.

이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.

본 발명에서 방향족 폴리에스테르 수지는 폴리에틸렌테레프탈레이트(PET)나 폴리부틸렌테레프탈레이트 중합시 에틸렌글리콜이나 부틸렌글리콜과 병행하여 페놀프탈레인을 0∼40mol%, 바람직하게는 1∼5mol%를 사용한 폴리에스테르 수지를 사용하며, 특히 이러한 방향족 폴리에스테르 수지는 100%오르소-클로로 페놀용액과 온도 25℃에서 측정한 고유점도가 0.6 내지 1.2의 범위에 있는 것을 사용하여야 한다.In the present invention, the aromatic polyester resin is a polyester resin using 0 to 40 mol%, preferably 1 to 5 mol% of phenolphthalein in parallel with ethylene glycol or butylene glycol during the polymerization of polyethylene terephthalate (PET) or polybutylene terephthalate. In particular, such an aromatic polyester resin should be used 100% ortho-chloro phenol solution and the intrinsic viscosity measured at a temperature of 25 ℃ in the range of 0.6 to 1.2.

한편, 본 발명의 코아-셀 형태의 합성고무는 MBS으로서, 메타아크릴레이트-부타디엔-스틸렌의 공중합체인데 코아는 부타디엔 중합체이며 셀은 아크릴레이트 중합체이다.On the other hand, the synthetic rubber of the core-cell form of the present invention is MBS, a copolymer of methacrylate-butadiene-styrene, wherein the core is a butadiene polymer and the cell is an acrylate polymer.

한편, 방향족 폴리에스테르 수지에 메타아크릴레이트-부타디엔-스틸렌 고무를 혼합시킬 경우 수지 100중량%에 대하여 5 내지 30중량%로 혼합시키는 것이 좋은데 그 첨가량이 5중량% 미만일 경우 폴리에스테르 수지 조성물의 내충격성을 향상시킬 수 없게 되며, 또 30중량% 이상으로 혼합하면 내충격 이외의 다른 기계적 물성이 급격하게 저하되는 결점이 있다.On the other hand, when the methacrylate-butadiene-styrene rubber is mixed with the aromatic polyester resin, it is preferable to mix it with 5 to 30% by weight with respect to 100% by weight of the resin, but when the addition amount is less than 5% by weight, the impact resistance of the polyester resin composition It is not possible to improve the temperature, and when mixed at 30% by weight or more, there is a drawback that the mechanical properties other than impact resistance are sharply lowered.

또한, 본 발명의 난연제로는 할로겐 원소가 치환된 폴리카보네이트 올리고머가 사용되며 본 발명의 폴리카보네이트 수지는 디페닐카보네이트와 같은 유기카보네이트와 비스페놀-A(Bisphenol-A)형으로 부터 유도된 폴리카보네이트이며, 치환된 할로겐 원소는 브롬이며 폴리카보네이트의 분자량은 20,000이하가 적당하다.In addition, as the flame retardant of the present invention, a polycarbonate oligomer substituted with a halogen element is used. The polycarbonate resin of the present invention is a polycarbonate derived from an organic carbonate such as diphenyl carbonate and a bisphenol-A type. The substituted halogen element is bromine and the molecular weight of polycarbonate is suitably 20,000 or less.

한편, 방향족 폴리에스테르 수지에 브롬이 치환된 폴리카보네이트를 혼합시킬 경우 수지 100중량%에 대하여 5 내지 30중량%로 혼합시키는 것이 좋은데 그 첨가량이 5중량% 미만일 경우 폴리에스테르 수지 조성물의 난연성을 부여할 수 없게 되며 또 30중량% 이상으로 혼합하면 다른 기계적 물성이 급격하게 저하되는 결점이 있다.On the other hand, when mixing a polycarbonate substituted bromine to an aromatic polyester resin, it is preferable to mix 5 to 30% by weight relative to 100% by weight of resin, when the addition amount is less than 5% by weight to impart flame retardancy of the polyester resin composition If not mixed with more than 30% by weight, there is a disadvantage that other mechanical properties are sharply lowered.

또한, 본 발명의 난연성을 향상시키기 위한 난연향상제로는 삼산화 안티몬(Sb2O3)이 사용되며 그 첨가량은 수지 100중량%에 대하여 1∼15중량%를 혼합시키는 것이 좋은데 그 첨가량이 1중량% 미만일 경우 난연향상 효과가 없으며, 15중량% 이상일 경우는 기계적 강도가 감소되어 좋지않다.In addition, antimony trioxide (Sb 2 O 3 ) is used as a flame retardant improver for improving the flame retardancy of the present invention, the amount of addition is preferably mixed 1 to 15% by weight relative to 100% by weight of the resin 1% by weight If less than, there is no effect of improving flame retardancy, and if it is more than 15% by weight, the mechanical strength is reduced, which is not good.

그리고, 본 발명에서는 페놀프탈레인이 공중합된 폴리에스테르의 연소시 드립(drip)성을 개선하기 위하여 난연제와 함께 폴리테트라플르오로에틸렌을 사용하며 그 첨가량은 수지 100중량%에 대하여 0.01 내지 2중량% 정도로 하는 것이 적합하며 그 이외에는 본 발명의 폴리에스테르 수지 조성물에는 섬유상 또는 입상의 충진물 및 강화재, 열안정제, 착색제, 산화방지제, 윤활제 및 기타 다른 합성 물질등과 같은 별도의 첨가제를 필요에 따라 적절하게 첨가시킬 수도 있다.In the present invention, polytetrafluoroethylene is used together with a flame retardant to improve the drip property of the polyester copolymerized with phenolphthalein, and the amount thereof is about 0.01 to 2% by weight based on 100% by weight of the resin. In addition, other additives such as fibrous or granular fillers and reinforcing agents, heat stabilizers, colorants, antioxidants, lubricants and other synthetic materials may be appropriately added to the polyester resin composition of the present invention as necessary. have.

특히, 강화재로는 유리섬유를 폴리에스테르 수지 100부에 대하여 0∼70중량부를 가하는 것이 효과적이며, 70중량부 이상일 경우에는 성형성이 저하된다.In particular, as a reinforcing material, it is effective to add 0 to 70 parts by weight of glass fiber with respect to 100 parts of polyester resin, and when it is 70 parts by weight or more, formability is lowered.

이렇게 하여 얻어진 본 발명에 따른 방향족 폴리에스테르 수지 조성물은 종래의 방법에 의하여 제조된 수지 조성물 보다 인장강도와 굴곡강도, 충격강도등은 물론 기계적 물성이 크게 감소하지 않으나, 난연성이 상당히 우수하고 아울러 매우 양호한 사출성형성을 갖는 효과가 있다.The aromatic polyester resin composition according to the present invention thus obtained does not significantly reduce tensile strength, flexural strength, impact strength, etc., as well as mechanical properties, compared to the resin composition prepared by the conventional method. It has the effect of having injection molding.

이들 수지 조성물의 제조방법으로는 220∼290℃의 실린더 온도에서 용융혼련용 압출기로 혼련합출하여 성형용 칩을 제조한 다음, 제조된 성형용 칩을 120℃온도에서 6시간 동안 제습형 열풍건조기로 건조시킨 후, 다시 240∼290℃의 온도에서 스크류식 사출성형기를 이용하여 덤벨(dumbell) 시편과 두께 1/8인치 충격시험용 시편과 1/32인치 난연시편을 각각 제조한다.As a method for producing these resin compositions, the mixture is kneaded and melted with a melt kneading extruder at a cylinder temperature of 220 to 290 ° C. to manufacture a molding chip, and then the manufactured molding chip is dehumidified at a temperature of 120 ° C. for 6 hours. After drying by using a screw injection molding machine again at a temperature of 240 ~ 290 ℃ to prepare a dumbbell (dumbell) specimen, 1/8 inch thick impact test specimen and 1/32 inch flame retardant specimens, respectively.

상기의 제조된 시편의 물성을 측정하는데 있어서 인장강도는 ASTM D648, 충격강도는 ASTM D256, 난연성은 UL94의 규격에 맞추어서 측정하였다.In measuring the physical properties of the prepared specimens, the tensile strength of ASTM D648, impact strength of ASTM D256, flame retardancy was measured according to the standard of UL94.

이러한, 본 발명의 실시예 및 비교실시예의 조성 및 물성평가결과를 표 1에 상세하게 설명하였으며, 본 발명은 다음 실시예에만 한정되는 것은 아니다.The composition and physical property evaluation results of Examples and Comparative Examples of the present invention were described in detail in Table 1, but the present invention is not limited only to the following Examples.

[표 1]TABLE 1

Figure kpo00002
Figure kpo00002

* 폴리부틸렌/페놀프탈레인테레프탈레이트 : 부틸렌과 페놀프탈레인의 조성비가 95 : 5몰(mole)%* Polybutylene / phenolphthalein terephthalate: composition ratio of butylene and phenolphthalein is 95: 5 mol (mole)%

* 난연제 : 구레아화학(일본) KCA 102(Kureha Chem. KCA 102)* Flame Retardant: Kureha Chem. (KCA 102)

상기 물성평가표로 부터 알수 있는 것처럼 본 발명은 내충격성과 난연성이 동시에 우수한 반면 비교실시예 1는 난연성은 우수하나 충격강도가 낮으며 비교실시예 2는 드립(drip) 개선제를 넣었음에도 불구하고 드립이 발생하고 비교실시예 3,4,5에는 드립방지제가 들어가지 않으면 드립이 발생하며 비교실시예 3에서는 드립방지제가 들어갔으나 난연이 V-2규격이었다.As can be seen from the property evaluation table, the present invention has excellent impact resistance and flame retardancy, while Comparative Example 1 has excellent flame retardancy but low impact strength, and Comparative Example 2 has a drip even though a drip improver is added. In Comparative Examples 3, 4, and 5, when the drip inhibitor did not enter, drips occurred. In Comparative Example 3, the drip inhibitor was contained, but the flame retardant was V-2 standard.

Claims (2)

디올(diol) 세그먼트가 페놀프탈레인 1∼5몰%, 부틸렌글리콜 95∼99몰%로 구성되어 있으며 디애시드 세그먼트가 테레프탈산이고 고유점도가 0.6 내지 1.2의 범위인 방향족 폴리에스테르수지 100중량부에 강화재로 유리섬유 0∼70중량부, 코아-셀 형태의 합성고무 5∼30중량부, 난연제로 브롬으로 치환된 비스페놀에이(bisphenol-A)의 폴리카보네이트 올리고머 5∼30중량부, 난연향상제로 삼산화 안티몬 1∼15중량부 및 드립(drip) 개선제로 폴리테트라플르오로에틸렌 0.01∼2중량부를 용융, 혼합시키는 것을 특징으로 하는 방향족 폴리에스테르수지 조성물.Diol segment is composed of 1-5 mol% phenolphthalein, 95-99 mol% butylene glycol, and diacid segment is terephthalic acid and 100 parts by weight of aromatic polyester resin having an intrinsic viscosity ranging from 0.6 to 1.2. 0 to 70 parts by weight of glass fiber, 5 to 30 parts by weight of synthetic rubber in the form of core-cell, 5 to 30 parts by weight of polycarbonate oligomer of bisphenol-A substituted with bromine as flame retardant, antimony trioxide as flame retardant An aromatic polyester resin composition characterized by melting and mixing 0.01 to 2 parts by weight of polytetrafluoroethylene with -15 parts by weight and a drip improver. 제1항에 있어서, 코아-셀 형태의 합성고무는 코아가 부타디엔 중합체, 셀이 아크릴레이트 중합체인 것을 특징으로 하는 방향족 폴리에스테르 수지 조성물.The aromatic polyester resin composition according to claim 1, wherein the synthetic rubber in the form of core-cell is a core butadiene polymer and a cell acrylate polymer.
KR1019890019272A 1989-12-22 1989-12-22 Aromatic polyester resin composition KR930004281B1 (en)

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