JP2021172795A - Resin composition, molding, electronic component, and electronic device - Google Patents

Resin composition, molding, electronic component, and electronic device Download PDF

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JP2021172795A
JP2021172795A JP2020080465A JP2020080465A JP2021172795A JP 2021172795 A JP2021172795 A JP 2021172795A JP 2020080465 A JP2020080465 A JP 2020080465A JP 2020080465 A JP2020080465 A JP 2020080465A JP 2021172795 A JP2021172795 A JP 2021172795A
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菜月 小池
Natsuki Koike
光代 松本
Mitsuyo Matsumoto
良隆 関口
Yoshitaka Sekiguchi
明 鈴木
Akira Suzuki
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Ricoh Co Ltd
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Abstract

To provide a resin composition which is excellent in mechanical strength and flame retardancy in a blend resin of a PC resin and a PS resin.SOLUTION: A resin composition contains at least a PC resin, a PS resin and a phosphorus-based compound, in which the resin composition contains 70 pts.mass or more and 85 pts.mass or less of the PC resin with respect to 100 pts.mass of the total of the resins, the phosphorous-based compound contains a phosphazene-based compound a phosphate-based compound, the phosphorus-based compound contains 0.1 pts.mass or more and 4.0 pts.mass or less of the phosphazene-based compound with respect to 100 pts.mass of the total of the resins and contains 3.5 pts.mass or more and 12 pts.mass or less of the phosphate-based compound with respect to 100 pts.mass of the total of the resins, the PC resin and the PS resin form a sea-island structure that the PC resin is a sea and the PS resin is an island, and when a cross section is observed by a scanning electron microscope SEM-EDX, a ratio of the sea-island structure in a presence amount of a phosphorus element of the sea part to the island part is 7:3 to 9:1.SELECTED DRAWING: None

Description

本発明は、樹脂組成物、成形体、電子部品、及び電子機器に関する。 The present invention relates to resin compositions, molded articles, electronic components, and electronic devices.

一般に有機物である高分子は火災時に燃焼するので、難燃剤を添加した難燃性樹脂が、自動車材料、電気電子機器材料、住宅材料、その他の加工分野における部品製造用材料等に幅広く使用されている。このような樹脂材料について、難燃性だけでなく機械的強度も良好である事が求められており、とりわけ衝撃強度に耐える必要がある。これを実現するためには、良好な外観を射出成形で容易に得ることができるために市場で普及しているポリカーボネート(PC)樹脂に、ABS樹脂やポリスチレン(PS)樹脂を配合した樹脂が知られている。特に、コストダウンを目的とした場合、PC樹脂とPS樹脂とのブレンド樹脂を用いることが既に知られている。 Since polymers, which are generally organic substances, burn in the event of a fire, flame retardant resins containing flame retardants are widely used in automobile materials, electrical and electronic equipment materials, housing materials, and materials for manufacturing parts in other processing fields. There is. Such a resin material is required to have good mechanical strength as well as flame retardancy, and in particular, it is necessary to withstand impact strength. In order to realize this, a resin obtained by blending ABS resin or polystyrene (PS) resin with polycarbonate (PC) resin, which is widely used in the market because a good appearance can be easily obtained by injection molding, is known. Has been done. In particular, it is already known to use a blended resin of a PC resin and a PS resin for the purpose of cost reduction.

特許文献1には、難燃性、剛性、耐衝撃性に優れた難燃性樹脂組成物を提供する目的で、特定のホスファゼン誘導体と、特定のリン含有化合物との組み合わせを添加することによって、ポリカーボネートを含む樹脂組成物であり、難燃性と剛性、及び耐衝撃性に優れた樹脂組成物となっており、樹脂100質量部に対してPC樹脂:62質量部、ABS樹脂:32質量部、PS樹脂:6質量部の構成が開示されている。 Patent Document 1 provides a flame-retardant resin composition having excellent flame retardancy, rigidity, and impact resistance by adding a combination of a specific phosphazene derivative and a specific phosphorus-containing compound. It is a resin composition containing polycarbonate, which is excellent in flame retardancy, rigidity, and impact resistance. PC resin: 62 parts by mass, ABS resin: 32 parts by mass with respect to 100 parts by mass of resin. , PS resin: The composition of 6 parts by mass is disclosed.

しかしながら、従来のPC樹脂とPS樹脂とのブレンド樹脂では、難燃剤含有率を高くすると機械的強度が低下してしまうという問題があった。
本発明は、PC樹脂とPS樹脂とのブレンド樹脂において機械的強度及び難燃性に優れた樹脂組成物を提供することを目的とする。
However, the conventional blended resin of PC resin and PS resin has a problem that the mechanical strength is lowered when the flame retardant content is increased.
An object of the present invention is to provide a resin composition having excellent mechanical strength and flame retardancy in a blended resin of a PC resin and a PS resin.

上記課題を解決する本発明の樹脂組成物は以下の通りである。
少なくともPC樹脂、PS樹脂およびリン系化合物を含有する樹脂組成物であって、
前記PC樹脂を、樹脂合計100質量部に対し70質量部以上85質量部以下含有し、
前記リン系化合物は、ホスファゼン系化合物及びリン酸エステル系化合物を含み、
前記ホスファゼン系化合物を樹脂合計100質量部に対し0.1質量部以上4.0質量部以下含有し、
前記リン酸エステル系化合物を樹脂合計100質量部に対し3.5質量部以上12質量部以下含有し、
前記PC樹脂と、前記PS樹脂とは、PC樹脂が海でPS樹脂が島である海島構造を形成しており、走査型電子顕微鏡SEM−EDX(Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry)で断面を観察したときに、リン元素の存在量の海島構造の比率が、海部分と島部分で7:3〜9:1である、
樹脂組成物。
The resin composition of the present invention that solves the above problems is as follows.
A resin composition containing at least a PC resin, a PS resin, and a phosphorus-based compound.
The PC resin is contained in an amount of 70 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphorus-based compound includes a phosphazene-based compound and a phosphoric acid ester-based compound.
The phosphazene compound is contained in an amount of 0.1 part by mass or more and 4.0 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphoric acid ester compound is contained in an amount of 3.5 parts by mass or more and 12 parts by mass or less with respect to 100 parts by mass of the total resin.
The PC resin and the PS resin form a sea-island structure in which the PC resin is the sea and the PS resin is the island, and the scanning electron microscope SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry) is used. When observing the cross section, the ratio of the abundance of phosphorus elements to the sea-island structure is 7: 3 to 9: 1 between the sea part and the island part.
Resin composition.

本発明により、PC樹脂とPS樹脂とのブレンド樹脂において、機械的強度及び難燃性に優れた樹脂組成物を提供できる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a resin composition having excellent mechanical strength and flame retardancy in a blended resin of a PC resin and a PS resin.

本発明は、PC樹脂及びPS樹脂を含む難燃性樹脂組成物において、PC樹脂とPS樹脂と特殊な難燃剤とを組み合わせると共に、樹脂組成物中における難燃剤の存在位置の制御により、機械的強度、難燃性が低下しない樹脂組成物を提供するものである。
上記記載の本発明の特徴について、以下に詳細に説明する。
The present invention mechanically controls the presence position of the flame retardant in the resin composition while combining the PC resin, the PS resin and the special flame retardant in the flame retardant resin composition containing the PC resin and the PS resin. It is an object of the present invention to provide a resin composition whose strength and flame retardancy do not decrease.
The features of the present invention described above will be described in detail below.

(PC樹脂)
ポリカーボネート樹脂は、例えば、芳香族二価フェノール系化合物とホスゲンまたは炭酸ジエステルとを反応させることにより得られる、芳香族ホモポリカーボネート樹脂またはコポリカーボネート樹脂であってもよい。芳香族二価フェノール系化合物の例には、2,2−ビス(4−ヒドロキシフェニル)プロパン、2,2−ビス(4−ヒドロキシ−3,5−ジメチルフェニル)プロパン、ビス(4−ヒドロキシフェニル)メタン、1,1−ビス(4−ヒドロキシフェニル)エタン、2,2−ビス(4−ヒドロキシフェニル)ブタン、2,2−ビス(4−ヒドロキシ−3,5−ジフェニル)ブタン、2,2−ビス(4−ヒドロキシ−3,5−ジエチルフェニル)プロパン、2,2−ビス(4−ヒドロキシ−3,5−ジエチルフェニル)プロパン、1,1−ビス(4−ヒドロキシフェニル)シクロヘキサン、および1−フェニル−1,1−ビス(4−ヒドロキシフェニル)エタン等が挙げられ、これらを単独あるいは混合物として使用してもよい。
(PC resin)
The polycarbonate resin may be, for example, an aromatic homopolycarbonate resin or a copolycarbonate resin obtained by reacting an aromatic dihydric phenolic compound with phosgene or a carbonic acid diester. Examples of aromatic divalent phenolic compounds include 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxy-3,5-dimethylphenyl) propane, and bis (4-hydroxyphenyl). ) Methan, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) butane, 2,2-bis (4-hydroxy-3,5-diphenyl) butane, 2,2 -Bis (4-hydroxy-3,5-diethylphenyl) propane, 2,2-bis (4-hydroxy-3,5-diethylphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane, and 1 Examples thereof include −phenyl-1,1-bis (4-hydroxyphenyl) ethane, and these may be used alone or as a mixture.

ポリカーボネート樹脂は、合成したものを用いてもよいし、市販品を用いてもよい。
市販品としては、例えば、帝人化成社製の「L−1250Y」、「AD5503」、出光興産社製の「A2200」、三菱エンジニアリングプラスチック社製の「ユーピロンS2000」、「ユーピロンH−3000VR」(芳香族ポリカーボネート樹脂)等が挙げられる。
また、ポリカーボネート樹脂は、1種単独で用いてもよいし、2種以上を併用してもよい。
また、ポリカーボネート樹脂は、市場から回収した市場回収材であってもよく、例えば、廃CD等の廃ディスク、ウォータサーバのガロンボトル等の廃ボトル等の再生材を含んでいてもよい。
As the polycarbonate resin, a synthetic one may be used, or a commercially available product may be used.
Commercially available products include, for example, "L-1250Y" and "AD5503" manufactured by Teijin Chemicals Ltd., "A2200" manufactured by Idemitsu Kosan Co., Ltd., "Iupilon S2000" and "Iupilon H-3000VR" manufactured by Mitsubishi Engineering Plastics. Group polycarbonate resin) and the like.
Further, the polycarbonate resin may be used alone or in combination of two or more.
Further, the polycarbonate resin may be a market-recovered material collected from the market, and may include, for example, a waste disk such as a waste CD or a recycled material such as a waste bottle such as a gallon bottle of a water server.

本発明の樹脂組成物は、PC樹脂を樹脂合計100質量部に対して70質量部以上85質量部以下含有する。PC樹脂の含有量が樹脂合計100質量部に対して70質量部以上85質量部以下であると、難燃性V−0を得つつ、必要な機械的強度が得られる。
なお、前記樹脂合計100質量部に対する質量部数は、樹脂組成物に含有される全ての樹脂の合計を100質量部とした時の質量部数である。
The resin composition of the present invention contains 70 parts by mass or more and 85 parts by mass or less of the PC resin with respect to 100 parts by mass of the total resin. When the content of the PC resin is 70 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the total resin, the required mechanical strength can be obtained while obtaining the flame retardant V-0.
The number of parts by mass with respect to 100 parts by mass of the total resin is the number of parts by mass when the total of all the resins contained in the resin composition is 100 parts by mass.

(PS樹脂)
ポリスチレン樹脂は、下記一般式(1)で表される構成単位を有し、ゴム成分を含むことが好ましい。

Figure 2021172795
(PS resin)
The polystyrene resin has a structural unit represented by the following general formula (1), and preferably contains a rubber component.
Figure 2021172795

ポリスチレン樹脂の具体例としては、スチレン系単量体にゴム成分を溶解させ、塊状重合法や懸濁重合法など公知の重合法により得られたゴム変性スチレン重合体や、スチレン系単量体とゴム成分とを公知の方法にて物理混合し、スチレン系単量体とゴム成分との混合物を形成したものが挙げられる。 Specific examples of the polystyrene resin include a rubber-modified styrene polymer obtained by dissolving a rubber component in a styrene-based monomer and a known polymerization method such as a massive polymerization method or a suspension polymerization method, or a styrene-based monomer. Examples thereof include those in which a rubber component is physically mixed by a known method to form a mixture of a styrene-based monomer and a rubber component.

上記のスチレン系単量体としては、スチレンが好適に用いられる。必要に応じて、例えば、α−メチルスチレン、α−メチル−p−メチルスチレン、o−メチルスチレン、m−メチルスチレン、p−メチルスチレン、2,4−ジメチルスチレン、エチルスチレン、p−t−ブチルスチレン、1,1−ジフェニルエチレン、ブロモスチレン、ジブロモスチレン、クロロスチレン、ジクロロスチレンなどをスチレン系単量体としてスチレンと組み合わせて用いることもできる。2種類以上のスチレン系単量体を用いる場合はスチレンを50質量部以上含有することが好ましい。 As the above-mentioned styrene-based monomer, styrene is preferably used. If necessary, for example, α-methylstyrene, α-methyl-p-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 2,4-dimethylstyrene, ethylstyrene, pt- Butylstyrene, 1,1-diphenylethylene, bromostyrene, dibromostyrene, chlorostyrene, dichlorostyrene and the like can also be used in combination with styrene as a styrene-based monomer. When two or more types of styrene-based monomers are used, it is preferable to contain 50 parts by mass or more of styrene.

上記ゴム成分としては、例えば、ポリブタジエン、スチレン−ブタジエン共重合体、アクリロニトリル−ブタジエン共重合体、ポリイソプレン、スチレン−イソプレン共重合体、ブタジエン−メタアクリル酸エステル共重合体、アクリル系ゴム、エチレン−プロピレンゴム、エチレン−プロピレン−ジエンゴム、水素添加ジエン系ゴムなどが挙げられる。これらのゴム成分は、単独もしくは2種以上を用いても良く、2種類以上のゴム成分を用いる場合、その混合比は特に限定されるものではない。 Examples of the rubber component include polybutadiene, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, polyisoprene, styrene-isoprene copolymer, butadiene-methacrylic acid ester copolymer, acrylic rubber, and ethylene-. Examples thereof include propylene rubber, ethylene-propylene-diene rubber, and hydrogenated diene rubber. These rubber components may be used alone or in combination of two or more, and when two or more types of rubber components are used, the mixing ratio thereof is not particularly limited.

また、ポリスチレン樹脂は、市場から回収した市場回収材であってもよく、例えば、エアコン、テレビ、冷蔵庫、洗濯機など家電製品や使用済みのOA機器等の再生材を含んでいてもよい。
本発明の樹脂組成物は、PS樹脂を含有することにより、低コスト化することができる。
樹脂組成物におけるPS樹脂の含有量は、多いほど低コスト化が可能であるが、低コスト化かつ良好な機械的強度、難燃性が得られる範囲を考慮すると、樹脂合計100質量部に対して、15質量部以上30質量部以下含有することが好ましく、そのうち、20質量部以上25質量部未満がより好ましい。
Further, the polystyrene resin may be a market-recovered material collected from the market, and may include, for example, a recycled material such as home appliances such as an air conditioner, a television, a refrigerator, and a washing machine, and used OA equipment.
The cost of the resin composition of the present invention can be reduced by containing the PS resin.
The higher the content of PS resin in the resin composition, the lower the cost can be. However, considering the range in which the cost can be reduced and good mechanical strength and flame retardancy can be obtained, the total amount of the resin is 100 parts by mass. The content is preferably 15 parts by mass or more and 30 parts by mass or less, and more preferably 20 parts by mass or more and less than 25 parts by mass.

(ABS樹脂)
本発明の樹脂組成物は、耐衝撃性向上を目的としてABS樹脂を含んでもよい。
ABS樹脂の含有量は樹脂合計100質量部に対し1質量部以上15質量部以下であることが好ましい。
ABS樹脂の製造方法は特に制限されないが、乳化状態のゴムに乳化状態のスチレン、アクリルニトリルの単量体を混ぜて重合させる乳化重合法;ゴムをスチレン、アクリルニトリルの単量体に溶解させて塊状重合させ、重合の途中でこの重合液を水中に懸濁させて懸濁重合条件下に重合を継続する塊状懸濁重合法等により製造することができる。なお、PC樹脂、PS樹脂をアロイ化する際には、使用されるABS樹脂の特性に応じた重合方法が選択されるが、一般には、乳化重合法および塊状懸濁重合法のいずれの重合方法において製造されたABS樹脂でも、アロイ化は可能である。
(ABS resin)
The resin composition of the present invention may contain an ABS resin for the purpose of improving impact resistance.
The content of the ABS resin is preferably 1 part by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the total resin.
The method for producing the ABS resin is not particularly limited, but is an emulsion polymerization method in which an emulsified rubber is mixed with an emulsified styrene or acrylic nitrile monomer and polymerized; the rubber is dissolved in a styrene or acrylic nitrile monomer and polymerized. It can be produced by a bulk polymerization method or the like in which bulk polymerization is carried out, and the polymerization solution is suspended in water during the polymerization to continue the polymerization under suspension polymerization conditions. When alloying the PC resin and PS resin, a polymerization method is selected according to the characteristics of the ABS resin used, but in general, either the emulsion polymerization method or the massive suspension polymerization method is used. The ABS resin produced in the above can also be alloyed.

また、ABS樹脂は、市場から回収した市場回収材であってもよく、例えば、エアコン、テレビ、冷蔵庫、洗濯機など家電製品や使用済みのOA機器等の再生材を含んでいてもよい。 Further, the ABS resin may be a market-recovered material collected from the market, and may include, for example, a recycled material such as home appliances such as an air conditioner, a television, a refrigerator, and a washing machine, and used OA equipment.

(その他の樹脂)
本発明の樹脂組成物は、PC樹脂、PS樹脂、ABS樹脂に加え、難燃性、剛性、耐衝撃性等を著しく低下させない範囲において、PP樹脂、PE樹脂等を含有することができる。
(Other resins)
In addition to the PC resin, PS resin, and ABS resin, the resin composition of the present invention can contain PP resin, PE resin, and the like within a range that does not significantly reduce flame retardancy, rigidity, impact resistance, and the like.

(ホスファゼン系化合物)
前記ホスファゼン系化合物については、下記一般式(2)で表されるホスファゼン系化合物が、製造容易性及び化合物の安定性の点で好ましい。

Figure 2021172795
(上記一般式(2)中、Xは、それぞれ独立して、ハロゲン原子、もしくは芳香族鎖、脂肪族鎖を表す。)
さらに、前記ホスファゼン系化合物はその製造法により、環状構造を形成するP原子及びN原子の数が増加することがあるが、特に制限はなく、目的に応じて適宜選択することができる。
前記一般式における側鎖基Xの脂肪族鎖、芳香族鎖はアルコキシ基構造を有しても良いし、末端にハロゲン元素を有しても良い。
アルコキシ基を形成する化合物は、脂肪族系化合物、芳香族系化合物など何でも良いが、芳香族環を含む化合物がホスファゼン系化合物の安定性のためとリン系化合物への溶解性のために好ましい。
これらの中でも、Xは、フェノキシ基が好ましい。 (Phosphazene compound)
As for the phosphazene compound, the phosphazene compound represented by the following general formula (2) is preferable in terms of ease of production and stability of the compound.
Figure 2021172795
(In the above general formula (2), X independently represents a halogen atom, an aromatic chain, or an aliphatic chain.)
Further, the number of P atoms and N atoms forming a cyclic structure may increase depending on the production method of the phosphazene compound, but there is no particular limitation, and the phosphazene compound can be appropriately selected depending on the intended purpose.
The aliphatic chain and aromatic chain of the side chain group X in the above general formula may have an alkoxy group structure or may have a halogen element at the terminal.
The compound forming the alkoxy group may be any compound such as an aliphatic compound and an aromatic compound, but a compound containing an aromatic ring is preferable because of the stability of the phosphazene compound and the solubility in a phosphorus compound.
Among these, X is preferably a phenoxy group.

このホスファゼン系化合物は、前記樹脂組成物100質量部に対し、0.1質量部以上4.0質量部未満含有される。好ましくは、樹脂合計100質量部に対し、1.0質量部以上2.0質量部以下である。
前記含有率が、0.1質量部未満では、含有量が少なくて本発明の目的を達成できない。
また、4.0質量部を超えて含有すると、混練時に難燃性樹脂の中で凝集しやすくなるので好ましくない。前記含有率が、4.0質量部未満であると、難燃性樹脂の中で凝集しにくくなり、本発明の目的を達成しやすくなる。
This phosphazene-based compound is contained in an amount of 0.1 part by mass or more and less than 4.0 parts by mass with respect to 100 parts by mass of the resin composition. Preferably, it is 1.0 part by mass or more and 2.0 part by mass or less with respect to 100 parts by mass of the total resin.
If the content is less than 0.1 parts by mass, the content is too small to achieve the object of the present invention.
Further, if it is contained in an amount exceeding 4.0 parts by mass, it tends to aggregate in the flame-retardant resin at the time of kneading, which is not preferable. When the content is less than 4.0 parts by mass, it becomes difficult to aggregate in the flame-retardant resin, and it becomes easy to achieve the object of the present invention.

(ホスファゼン系化合物以外のリン系化合物)
本発明においてリン系化合物は、これまで述べたホスファゼン系化合物の凝集を防ぐためにホスファゼン系化合物以外のリン系化合物を併用することが好ましい。
ホスファゼン系化合物以外のリン系化合物としてはリン酸エステルを用いる。
(Phosphorus compounds other than phosphazene compounds)
In the present invention, it is preferable to use a phosphorus compound other than the phosphazene compound in combination with the phosphorus compound in order to prevent aggregation of the phosphazene compound described above.
A phosphoric acid ester is used as the phosphorus-based compound other than the phosphazene-based compound.

(リン酸エステル系化合物)
ホスファゼン系化合物の凝集を防ぐために併用される本発明で併用されるリン酸エステル系化合物としては樹脂の混練温度で溶融するものが好ましい。
リン酸エステルは融点(Tm)を持つ化合物で、Tmは300℃未満が好ましく、200℃未満がさらに好ましく、100℃未満が特に好ましい。最も好ましいTmの下限は0℃以上であるが混練時に溶融状態になれば、Tmの下限については本発明で制限しない。しかしTmが−40℃未満であると樹脂に分散したときに時間が経過すると表面へ浮き出る現象(ブリードアウト)が激しくなるので好ましくない。
前記リン酸エステルの中には、3次元化し混練時に溶融せずTmを持たない化合物も存在し、本発明でこのような化合物は好適ではない。
(Phosphate ester compound)
The phosphoric acid ester compound used in the present invention, which is used in combination to prevent aggregation of the phosphazene compound, is preferably one that melts at the kneading temperature of the resin.
The phosphoric acid ester is a compound having a melting point (Tm), and Tm is preferably less than 300 ° C., more preferably less than 200 ° C., and particularly preferably less than 100 ° C. The most preferable lower limit of Tm is 0 ° C. or higher, but the lower limit of Tm is not limited by the present invention as long as it is in a molten state during kneading. However, if Tm is less than −40 ° C., the phenomenon of floating out to the surface (bleed-out) becomes severe over time when dispersed in the resin, which is not preferable.
Among the phosphoric acid esters, there are compounds that are three-dimensionalized, do not melt during kneading, and do not have Tm, and such compounds are not suitable in the present invention.

リン酸エステル系化合物は樹脂中の酸素原子を取り込むことでより難燃性を発揮するため、あらかじめPC樹脂と混練することで、PC樹脂中のリン酸エステル系化合物の存在率を高め、より効果を発揮することができる。
このため、リン酸エステルの難燃性樹脂組成物への添加は、あらかじめリン酸エステルとPC樹脂とを混練して樹脂組成物を作製しておき、この樹脂組成物を難燃性樹脂組成物の混練時に他の成分と混練することによって行う。
後述する表2−1〜表3−2に記載の「マスターバッチ」とは予めPC樹脂とリン酸エステル系化合物及び/又はホスファゼン系化合物とを混練したものをいう。
この場合、添加するリン酸エステル系化合物のうち、半分以上をマスターバッチ化することが好ましい。
また、2段投入が可能な混練機を用いる場合、まず、一つ目のフィーダーからPC樹脂及びリン酸エステル系化合物を投入し、次いで、二つ目のフィーダーからその他の樹脂、添加剤を投入しても良いが、予めPC樹脂とリン酸エステル系化合物とをマスターバッチ化してからその他の樹脂、添加剤と溶融混練することが好ましい。
Phosphate ester compounds exhibit more flame retardancy by incorporating oxygen atoms in the resin. Therefore, by kneading with PC resin in advance, the abundance of phosphoric acid ester compounds in the PC resin is increased, which is more effective. Can be demonstrated.
Therefore, when adding the phosphoric acid ester to the flame-retardant resin composition, the phosphoric acid ester and the PC resin are kneaded in advance to prepare a resin composition, and this resin composition is used as the flame-retardant resin composition. This is done by kneading with other ingredients at the time of kneading.
The “masterbatch” shown in Tables 2-1 to 3-2 described later refers to a mixture of a PC resin and a phosphoric acid ester compound and / or a phosphazene compound in advance.
In this case, it is preferable to masterbatch at least half of the phosphoric acid ester compounds to be added.
When using a kneader capable of two-stage charging, first, the PC resin and the phosphate ester compound are charged from the first feeder, and then other resins and additives are charged from the second feeder. However, it is preferable that the PC resin and the phosphoric acid ester compound are master-batched in advance and then melt-kneaded with other resins and additives.

次に前記リン酸エステルを例示するが、この例示は本発明を特に制限するものではない。
例えばトリ(アルキルフェニル)ホスフェート、ジ(アルキルフェニル)モノフェニルホスフェート、ジフェニルモノ(アルキルフェニル)ホスフェートまたはトリフェニルホスフェートの中の一つまたは2種以上の混合物、あるいは下記一般式(3)で表される化合物の一つまたは2種以上の混合物である。

Figure 2021172795
前記一般式(3)中、R〜Rは、それぞれ独立して、芳香族環を含む基を表す。nは、1〜10,000を表す。 Next, the phosphoric acid ester will be exemplified, but this example does not particularly limit the present invention.
For example, one or a mixture of tri (alkylphenyl) phosphate, di (alkylphenyl) monophenyl phosphate, diphenyl mono (alkylphenyl) phosphate or triphenyl phosphate, or a mixture represented by the following general formula (3). One or a mixture of two or more of the compounds.
Figure 2021172795
In the general formula (3), R 3 to R 7 each independently represent a group containing an aromatic ring. n represents 1 to 10,000.

からRまでは、アリールまたはアルキル置換されたアリール基が好ましく、好ましいR、R、R及びRはフェニル基、またはメチル、エチル、イソプロピル、t−ブチル、イソブチル、イソアミル、t−アミルなどのアルキル基が置換されたフェニル基であり、この中でも、フェニル基、またはメチル、エチル、イソプロピルまたはt−ブチル基が置換されたフェニル基がより好ましく;Rは、アリールまたはアルキル置換されたアリール基誘導体が好ましく、レゾルシノール、ヒドロキノンまたはビスフェノール−Aから誘導されたものがより好ましい。
前記リン酸エステルの含有量は、樹脂合計100質量部に対して5質量部以上12質量部未満が好ましく、7質量部以上10質量部未満がより好ましい。
From R 3 to R 7 , aryl or alkyl-substituted aryl groups are preferred, preferably R 3 , R 4 , R 6 and R 7 are phenyl groups, or methyl, ethyl, isopropyl, t-butyl, isobutyl, isoamyl, a phenyl group in which the alkyl group is substituted, such as t- amyl, among this, a phenyl group or a methyl, ethyl, more preferably isopropyl or t- butyl phenyl group group is substituted,; R 5 is aryl or alkyl Substituted aryl group derivatives are preferred, and those derived from resorcinol, hydroquinone or bisphenol-A are more preferred.
The content of the phosphoric acid ester is preferably 5 parts by mass or more and less than 12 parts by mass, and more preferably 7 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the total resin.

(その他添加剤)
本発明の一例の難燃性樹脂組成物は、難燃性、剛性、耐衝撃性等を著しく低下させない範囲において、安定剤、染顔料等のその他の添加剤を含んでよい。
(Other additives)
The flame-retardant resin composition of an example of the present invention may contain other additives such as stabilizers and dyes and pigments as long as the flame retardancy, rigidity, impact resistance and the like are not significantly reduced.

樹脂組成物から、含有される樹脂等を同定する方法としては、赤外分光法を用い、組成像により樹脂構造、リン系化合物を観察し、それぞれのスペクトルを取得することにより樹脂、リン系化合物を同定する方法等が挙げられる。
組成が一致した場合は、GCMSを用いて各樹脂の検量線を作成し、各樹脂を定量することができる。
リン系化合物は溶媒抽出し、樹脂同様にGCMSにより定量することができる。
As a method for identifying the contained resin or the like from the resin composition, infrared spectroscopy is used, the resin structure and the phosphorus-based compound are observed from the composition image, and the respective spectra are obtained to obtain the resin and the phosphorus-based compound. And the like.
If the compositions match, GCMS can be used to create a calibration curve for each resin and each resin can be quantified.
Phosphorus compounds can be solvent-extracted and quantified by GCMS in the same manner as resins.

本発明の樹脂組成物は、成形した試験片の23℃におけるシャルピー衝撃強度が5.0kJ/m以上であることが好ましい。シャルピー衝撃強度が5.0kJ/m以上であると、靭性が高いと言える。シャルピー衝撃強度は、より好ましくは、7.0kJ/m以上であり、さらに好ましくは11.0kJ/m以上である。
シャルピー衝撃強度は、ノッチ付き衝撃試験片を作製し、ISO179−1に準拠して、シャルピー衝撃試験機を用いて23℃で測定を行った。
また、本発明の樹脂組成物は、成形した試験片の23℃における引張強度が35MPa以上であることが好ましい。引張強度が35MPa以上であると、剛性が高いと言える。引張強度は、より好ましくは45MPa以上であり、さらに好ましくは50MPa以上である。
引張強度は、ISO527−2に準拠して23℃で測定を行った。
The resin composition of the present invention preferably has a Charpy impact strength of 5.0 kJ / m 2 or more at 23 ° C. of the molded test piece. When the Charpy impact strength is 5.0 kJ / m 2 or more, it can be said that the toughness is high. The Charpy impact strength is more preferably 7.0 kJ / m 2 or more, and further preferably 11.0 kJ / m 2 or more.
The Charpy impact strength was measured at 23 ° C. using a Charpy impact tester in accordance with ISO179-1 by preparing a notched impact test piece.
Further, in the resin composition of the present invention, the tensile strength of the molded test piece at 23 ° C. is preferably 35 MPa or more. When the tensile strength is 35 MPa or more, it can be said that the rigidity is high. The tensile strength is more preferably 45 MPa or more, still more preferably 50 MPa or more.
The tensile strength was measured at 23 ° C. according to ISO527-2.

(成形体について)
本発明の一例の成形体(以下、「一例の成形体」ともいう)は、本発明の一例の樹脂組成物から成る。
一例の成形体としては、例えば、コンピューター、ノートブック型パソコン、タブレット端末、スマートフォン、携帯電話等の情報・モバイル機器やプリンター、複写機等のOA機器の部材等が挙げられる。特に、耐熱性を要する外装部材に好適に用いられる。
一例の成形体は、例えば、一例の樹脂組成物を常法に従って射出成形することによって得ることができる。
(About molded products)
The molded article of the present invention (hereinafter, also referred to as “an example molded article”) comprises the resin composition of the example of the present invention.
Examples of the molded body include information / mobile devices such as computers, notebook personal computers, tablet terminals, smartphones, and mobile phones, and members of OA devices such as printers and copiers. In particular, it is preferably used for exterior members that require heat resistance.
An example molded body can be obtained, for example, by injection molding an example resin composition according to a conventional method.

(電子部品、電子機器)
本発明の一例の電子部品は、本発明の前記成形体を有する。
本発明の一例の電子機器は、本発明の前記成形体を有する。
(Electronic components, electronic devices)
The electronic component of an example of the present invention has the molded product of the present invention.
The electronic device of an example of the present invention has the molded product of the present invention.

前記電子部品としては、例えば、コンピューター、ノートブック型パソコン、タブレット端末、スマートフォン、携帯電話等の情報・モバイル機器やプリンター、複写機等のOA機器の電子部品等が挙げられる。
前記電子機器としては、例えば、コンピューター、ノートブック型パソコン、タブレット端末、スマートフォン、携帯電話等の情報・モバイル機器やプリンター、複写機等のOA機器、テレビ、冷蔵庫、掃除機等の家庭電化製品等が挙げられる。
Examples of the electronic components include information / mobile devices such as computers, notebook personal computers, tablet terminals, smartphones and mobile phones, and electronic components of OA devices such as printers and copiers.
Examples of the electronic devices include information / mobile devices such as computers, notebook personal computers, tablet terminals, smartphones, and mobile phones, OA devices such as printers and copiers, and home appliances such as televisions, refrigerators, and vacuum cleaners. Can be mentioned.

(樹脂組成物の製造方法)
前記リン酸エステル系化合物の難燃メカニズムは主にチャー(炭化層)形成であり、樹脂中の酸素原子を取り込むことでよりチャー形成が促進されるため、酸素原子の少ない樹脂には効果が小さい。
従って、リン酸エステル系化合物は酸素原子を含むPC樹脂に存在することでよりチャー形成の効果が得られる
そこで、本発明の樹脂組成物を製造するには、あらかじめPC樹脂と前記リン酸エステル系化合物とを混練し、この組成物を樹脂組成物の混練時に添加することで、PC樹脂に多くリン酸エステル系化合物を存在させることが好ましい。
本発明の樹脂組成物は、PC樹脂を樹脂合計100質量部に対し70質量部以上85質量部以下含有することから、PC樹脂のマトリックス中にPS樹脂が分散している海島構造を形成している。
難燃性を向上させる観点から、海島構造の海であるPC樹脂中に多くリン酸エステルが存在していることが好ましい。
前記ホスファゼン系化合物はPC樹脂に馴染みやすいため本発明の樹脂組成物の混練時に添加してもよいし、あらかじめPC樹脂と混練し、この組成物を樹脂組成物の混練時に添加してもよい。
(Manufacturing method of resin composition)
The flame retardant mechanism of the phosphoric acid ester compound is mainly char (carbonized layer) formation, and char formation is further promoted by incorporating oxygen atoms in the resin, so that the effect is small for resins having few oxygen atoms. ..
Therefore, the effect of char formation can be obtained by the presence of the phosphoric acid ester compound in the PC resin containing an oxygen atom. Therefore, in order to produce the resin composition of the present invention, the PC resin and the phosphoric acid ester compound are prepared in advance. It is preferable to knead the compound and add this composition at the time of kneading the resin composition so that a large amount of the phosphoric acid ester compound is present in the PC resin.
Since the resin composition of the present invention contains 70 parts by mass or more and 85 parts by mass or less of the PC resin with respect to 100 parts by mass of the total resin, a sea-island structure in which the PS resin is dispersed in the matrix of the PC resin is formed. There is.
From the viewpoint of improving flame retardancy, it is preferable that a large amount of phosphoric acid ester is present in the PC resin which is the sea of the sea-island structure.
Since the phosphazene compound is easily compatible with the PC resin, it may be added at the time of kneading the resin composition of the present invention, or it may be kneaded with the PC resin in advance and this composition may be added at the time of kneading the resin composition.

本発明の樹脂組成物の製造方法の一例(以下、「一例の製造方法」ともいう)は、例えば、PC樹脂、PS樹脂、ABS樹脂、リン系化合物、及び任意選択的に加えられる成分、並びに必要に応じて加えられるその他の添加剤を、溶融混練する溶融混練工程を含む。 An example of a method for producing a resin composition of the present invention (hereinafter, also referred to as “an example production method”) includes, for example, a PC resin, a PS resin, an ABS resin, a phosphorus-based compound, a component to be optionally added, and an example. It includes a melt-kneading step of melt-kneading other additives added as needed.

<溶融混練工程>
一例の製造方法では、初めに、本発明に必要な成分、及び任意選択的に加えられる成分、並びに必要に応じて加えられるその他の添加剤を、溶融混練する(溶融混練工程)。
上記工程によれば、各成分を均一に混合することができる。
この工程では、上記各成分を、タンブラー、ヘンシェルミキサー、バンバリーミキサー、ロール、ブラベンダー、単軸混練押出機、二軸混練押出機、ニーダー等の当該技術分野において公知の混練機を用いて、混練速度、混練温度、混練時間等の条件を適宜調節しながら、混練する。
<Melting and kneading process>
In the production method of one example, first, the components necessary for the present invention, the components optionally added, and other additives added as needed are melt-kneaded (melt-kneading step).
According to the above step, each component can be uniformly mixed.
In this step, each of the above components is kneaded using a kneader known in the art such as a tumbler, a Henschel mixer, a Banbury mixer, a roll, a brabender, a single-screw kneading extruder, a twin-screw kneading extruder, and a kneader. Knead while appropriately adjusting conditions such as speed, kneading temperature, and kneading time.

(マスターバッチ作製工程)
難燃性樹脂組成物は、まず、マスターバッチを作製した後、このマスターバッチとその他の樹脂及び添加剤とを溶融混練することによって製造することができる。
例えば、マスターバッチ成分を、タンブラー、ヘンシェルミキサー等を用いて、予め混合した後、このマスターバッチを他の成分と共にバンバリーミキサー、ロール、ブラベンダー、単軸混練押出機、二軸混練押出機、ニーダー等の混練機で溶融混練してもよい。また、例えば、各成分を予め混合せずに、これらの成分をフィーダーを用いて押出機に投入し、溶融混練してもよい。
(Masterbatch manufacturing process)
The flame-retardant resin composition can be produced by first producing a masterbatch and then melt-kneading the masterbatch with other resins and additives.
For example, after mixing the masterbatch components in advance using a tumbler, Henschel mixer, etc., this masterbatch is mixed with other components in a Banbury mixer, roll, brabender, single-screw kneading extruder, twin-screw kneading extruder, kneader. It may be melt-kneaded with a kneader such as. Further, for example, these components may be put into an extruder using a feeder and melt-kneaded without mixing the components in advance.

ここで、この工程では、特に限定されることなく、任意選択された成分を予め溶融混合させた後に、二軸混練押出機に添加することも好ましい。リン酸エステルが室温で液体である場合、ホスファゼン系化合物をこの成分に室温で溶解させることが可能である。また、リン酸エステルが室温で固体(例えば、粉末)である場合、これらの成分を乳鉢で混ぜた後、混合物を90℃以上に加熱して溶融させ、この溶融状態の混合物を二軸混練押出機に添加することが可能である。 Here, in this step, without particular limitation, it is also preferable that the arbitrarily selected components are melt-mixed in advance and then added to the twin-screw kneading extruder. If the phosphate ester is liquid at room temperature, it is possible to dissolve the phosphazene compound in this component at room temperature. When the phosphate ester is a solid (for example, powder) at room temperature, these components are mixed in a dairy pot, and then the mixture is heated to 90 ° C. or higher to melt the mixture, and the mixed mixture in the molten state is biaxially kneaded and extruded. It can be added to the machine.

なお、上記リン酸エステルとホスファゼン系化合物の予混合は、溶融混練工程の例示であり、リン系化合物の分散性を高める観点から、好ましい実施形態となるが、本発明の樹脂組成物の製造方法において必須となるものではない。また、上記乳鉢を用いた混合は、混合方法の例示であり、本発明の樹脂組成物の製造方法における混合方法は、これに限定されるものではなく、いかなる方法を採用してもよい。 The premixing of the phosphoric acid ester and the phosphazene-based compound is an example of the melt-kneading step, and is a preferred embodiment from the viewpoint of enhancing the dispersibility of the phosphorus-based compound. It is not essential in. Further, the mixing using the mortar is an example of the mixing method, and the mixing method in the method for producing the resin composition of the present invention is not limited to this, and any method may be adopted.

特に、混練温度は、PC樹脂の溶融温度(Tm)を基に決められる。Tmの測定については、ガラス転移点(Tg)と同様にDSC、TMA、DTA、温度を変えられる粘弾性装置など、どのような測定値を用いても良いが、これらの装置を用いて測定されたTm付近で混練すれば本発明の樹脂組成物が容易に得られる。 In particular, the kneading temperature is determined based on the melting temperature (Tm) of the PC resin. For the measurement of Tm, any measured value such as DSC, TMA, DTA, and a viscoelastic device whose temperature can be changed may be used as in the case of the glass transition point (Tg), but the measurement is performed using these devices. The resin composition of the present invention can be easily obtained by kneading in the vicinity of Tm.

また、このTm未満では、剪断流動が効果的に働き、ホスファゼン系化合物のドメイン形成を阻害するので好ましい。特に混練温度をTm未満からTg+20℃の温度領域とすることで本発明の好適な結果を得ることが可能である。 Further, if it is less than this Tm, the shear flow works effectively and inhibits the domain formation of the phosphazene compound, which is preferable. In particular, it is possible to obtain the preferable results of the present invention by setting the kneading temperature in the temperature range from less than Tm to Tg + 20 ° C.

TmやTgについては測定方法で変わることが知られている。本発明では、DSCで計測されたTmやTgの値を用いるのが好ましい。 It is known that Tm and Tg vary depending on the measurement method. In the present invention, it is preferable to use the values of Tm and Tg measured by DSC.

なお、本発明は下記(1)に記載の樹脂組成物に係るものであるが、下記(2)〜(8)を発明の実施形態として含む。
(1)少なくともPC樹脂、PS樹脂およびリン系化合物を含有する樹脂組成物であって、
前記PC樹脂を、樹脂合計100質量部に対し70質量部以上85質量部以下含有し、
前記リン系化合物は、ホスファゼン系化合物及びリン酸エステル系化合物を含み、
前記ホスファゼン系化合物を樹脂合計100質量部に対し0.1質量部以上4.0質量部以下含有し、
前記リン酸エステル系化合物を樹脂合計100質量部に対し3.5質量部以上12質量部以下含有し、
前記PC樹脂と、前記PS樹脂とは、PC樹脂が海でPS樹脂が島である海島構造を形成しており、走査型電子顕微鏡SEM−EDX(Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry)で断面を観察したときに、リン元素の存在量の海島構造の比率が、海部分と島部分で7:3〜9:1である、
樹脂組成物。
(2)ABS樹脂を樹脂合計100質量部に対し1質量部以上15質量部以下含有することを特徴とする上記(1)に記載の樹脂組成物。
(3)前記PC樹脂を樹脂合計100質量部に対し70質量部以上85質量部以下含有する上記(1)又は(2)に記載の樹脂組成物。
(4)シャルピー衝撃強度が5kJ/m以上である上記(1)乃至(3)のいずれか1項に記載の樹脂組成物。
(5)引張強度が35MPa以上である、上記(1)乃至(4)のいずれか1項に記載の樹脂組成物。
(6)上記(1)乃至(5)のいずれか1項に記載の樹脂組成物から成ることを特徴とする成形体。
(7)上記(6)に記載の成形体を有することを特徴とする電子部品。
(8)上記(6)に記載の成形体を有することを特徴とする電子機器。
Although the present invention relates to the resin composition described in (1) below, the following (2) to (8) are included as embodiments of the invention.
(1) A resin composition containing at least a PC resin, a PS resin and a phosphorus-based compound.
The PC resin is contained in an amount of 70 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphorus-based compound includes a phosphazene-based compound and a phosphoric acid ester-based compound.
The phosphazene compound is contained in an amount of 0.1 part by mass or more and 4.0 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphoric acid ester compound is contained in an amount of 3.5 parts by mass or more and 12 parts by mass or less with respect to 100 parts by mass of the total resin.
The PC resin and the PS resin form a sea-island structure in which the PC resin is the sea and the PS resin is the island, and the scanning electron microscope SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry) is used. When observing the cross section, the ratio of the abundance of phosphorus elements to the sea-island structure is 7: 3 to 9: 1 between the sea part and the island part.
Resin composition.
(2) The resin composition according to (1) above, wherein the ABS resin is contained in an amount of 1 part by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the total resin.
(3) The resin composition according to (1) or (2) above, which contains the PC resin in an amount of 70 parts by mass or more and 85 parts by mass or less based on 100 parts by mass of the total resin.
(4) The resin composition according to any one of (1) to (3) above, wherein the Charpy impact strength is 5 kJ / m 2 or more.
(5) The resin composition according to any one of (1) to (4) above, which has a tensile strength of 35 MPa or more.
(6) A molded product comprising the resin composition according to any one of (1) to (5) above.
(7) An electronic component having the molded product according to (6) above.
(8) An electronic device having the molded product according to (6) above.

以下に実施例に基づいて本発明をより詳細に説明するが、本発明の技術的範囲は下記実施例に何ら限定されるものではない。 Hereinafter, the present invention will be described in more detail based on Examples, but the technical scope of the present invention is not limited to the following Examples.

(マスターバッチの作製)
マスターバッチとして、PC樹脂にホスファゼン系化合物(SPS100)及びリン酸エステル(PX−200)を配合したマスターバッチMB1、MB2、MB3、MB4を作製した。各マスターバッチの成分割合を表1に示す。

Figure 2021172795
(Making a masterbatch)
As a masterbatch, masterbatch MB1, MB2, MB3, and MB4 in which a phosphazene compound (SPS100) and a phosphoric acid ester (PX-200) were mixed with a PC resin were prepared. Table 1 shows the component ratios of each masterbatch.
Figure 2021172795

(実施例1−1〜1−8、比較例1−1〜1−5)
この実施例及び比較例では樹脂成分としてPC樹脂及びPS樹脂を用いた。
表2−1及び表2−2に示す組成(質量部)で原料を配合し、原材料をスクリュー径25mm、スクリュー有効長L/D=26の二軸溶融混練押出機(テクノベル製)を用いて、シリンダ温度230℃で混練して実施例1−1〜1−8及び比較例1−1〜1−5の樹脂組成物を得た。
次に得られた樹脂組成物を用いて、設定温度240℃で溶融し、射出成形して評価用の試験片を得た。
(Examples 1-1 to 1-8, Comparative Examples 1-1 to 1-5)
In this example and comparative example, PC resin and PS resin were used as resin components.
The raw materials are mixed with the compositions (parts by mass) shown in Table 2-1 and Table 2-2, and the raw materials are mixed using a twin-screw melt-kneading extruder (manufactured by Technobel) having a screw diameter of 25 mm and an effective screw length of L / D = 26. , The resin compositions of Examples 1-1 to 1-8 and Comparative Examples 1-1 to 1-5 were obtained by kneading at a cylinder temperature of 230 ° C.
Next, the obtained resin composition was melted at a set temperature of 240 ° C. and injection molded to obtain a test piece for evaluation.

(実施例2−1〜2−8、比較例2−1〜2−5)
この実施例及び比較例では樹脂成分としてPC樹脂、PS樹脂に加えてABS樹脂を用いた。
表3−1及び表3−2に示す組成(質量部)で原料を配合し、実施例1−1と同様にして、実施例2−1〜2−8及び比較例2−1〜2−5の樹脂組成物及び評価用の試験片を得た。
(Examples 2-1 to 2-8, Comparative Examples 2-1 to 2-5)
In this example and comparative example, ABS resin was used in addition to PC resin and PS resin as the resin component.
The raw materials were blended in the compositions (parts by mass) shown in Table 3-1 and Table 3-2, and in the same manner as in Example 1-1, Examples 2-1 to 2-8 and Comparative Examples 2-1 to 2- The resin composition of No. 5 and a test piece for evaluation were obtained.

表3−1及び表3−2に記載の原材料は以下の通りである。
尚、表3−1〜表3−2においては、「部数」の欄は、配合した原料の質量部数を、「比率」の欄は、樹脂合計100質量部に対する質量部数を示す。
[原材料]
(樹脂)
PC樹脂:H−3000VR(三菱エンジニアリングプラスチックス社製)
PS樹脂:H650(東洋スチレン社製)
ABS樹脂:250−X10(東レ社製)
(リン系化合物)
ホスファゼン系化合物:SPS100
(大塚化学社製、主成分として、6員環の環状構造を有し、その6個の
側鎖全てがフェノキシ基である芳香族ホスファゼン化合物)
リン酸エステル:PX−200
(大八化学社製、芳香族縮合リン酸エステル、融点92℃以上)
The raw materials shown in Table 3-1 and Table 3-2 are as follows.
In Tables 3-1 to 3-2, the column of "number of copies" indicates the number of parts by mass of the blended raw material, and the column of "ratio" indicates the number of parts by mass with respect to 100 parts by mass of the total resin.
[raw materials]
(resin)
PC resin: H-3000VR (manufactured by Mitsubishi Engineering Plastics)
PS resin: H650 (manufactured by Toyo Styrene Co., Ltd.)
ABS resin: 250-X10 (manufactured by Toray Industries, Inc.)
(Phosphorus compound)
Phosphazene compound: SPS100
(Manufactured by Otsuka Chemical Co., Ltd., has a 6-membered ring ring structure as the main component, and 6 of them
Aromatic phosphazene compounds whose side chains are all phenoxy groups)
Phosphate ester: PX-200
(Aromatic condensed phosphoric acid ester manufactured by Daihachi Chemical Co., Ltd., melting point 92 ° C or higher)

[評価試験方法]
得られた試験片を用いて、以下の評価を行った。
(シャルピー衝撃強度)
ISO179−1に準拠して、シャルピー衝撃試験機を用いて、23℃において、衝撃試験を行った。なお、試験片にはノッチ(切れ目)を付けた。測定値(kJ/m)が高い値であるほど、耐衝撃性に優れていると評価した。
[評価基準]
ランク 測定値(kJ/m
◎ : 11.0以上
〇 : 7.0以上11.0未満
△ : 5.0以上7.0未満
× : 5未満
[Evaluation test method]
The following evaluation was performed using the obtained test piece.
(Charpy impact strength)
An impact test was performed at 23 ° C. using a Charpy impact tester in accordance with ISO179-1. The test piece was provided with a notch. It was evaluated that the higher the measured value (kJ / m 2 ), the better the impact resistance.
[Evaluation criteria]
Rank measurement value (kJ / m 2 )
◎: 11.0 or more 〇: 7.0 or more and less than 11.0 Δ: 5.0 or more and less than 7.0 ×: less than 5

(引張強度)
ISO527−2に準拠して、23℃において、引張試験を行った。測定値(MPa)が高い値であるほど、剛性(引張強度)に優れていると評価した。
[評価基準]
ランク 測定値(MPa)
◎ : 50以上
〇 : 45以上50未満
△ : 35以上45未満
× : 35未満
(Tensile strength)
Tensile tests were performed at 23 ° C. in accordance with ISO527-2. It was evaluated that the higher the measured value (MPa), the better the rigidity (tensile strength).
[Evaluation criteria]
Rank measurement (MPa)
◎: 50 or more 〇: 45 or more and less than 50 △: 35 or more and less than 45 ×: 35 or less

(難燃性)
米国アンダーライターズ・ラボラトリーズ(UL)が定めるUL94試験(機器の部品用プラスチック材料の燃焼試験)に準拠して、難燃試験を行なった。試験片の厚みtは1.5mmとした。
まずUL94V試験を行い、「V−0」、「V−1」、「V−2」の判定を行った。
次に、前記UL94V試験において、「V−0」、または「V−1」ランクに適合した材料について、UL94−5V試験を行い、「5V−A」、「5V−B」の判定を行った。
前記UL94−5V試験において「5V−A」、「5V−B」のいずれの基準も満たすことができなかった場合、表1において、UL94−5V試験の結果を「−」と示した。
前記UL94−5V試験において「5V−A」、「5V−B」である場合が合格であり、UL94V試験の結果が「V−0」、「V−1」であっても、UL94−5V試験において「5V−A」、「5V−B」のいずれの基準も満たすことができなかった場合は、不合格とした。
(Flame retardance)
A flame retardant test was conducted in accordance with the UL94 test (combustion test of plastic materials for equipment parts) established by the US Underwriters Laboratories (UL). The thickness t of the test piece was 1.5 mm.
First, a UL94V test was performed to determine "V-0", "V-1", and "V-2".
Next, in the UL94V test, a UL94-5V test was performed on a material conforming to the "V-0" or "V-1" rank, and "5V-A" and "5V-B" were determined. ..
When neither of the criteria of "5V-A" and "5V-B" could be satisfied in the UL94-5V test, the result of the UL94-5V test is shown as "-" in Table 1.
In the UL94-5V test, if it is "5V-A" or "5V-B", it passes, and even if the result of the UL94V test is "V-0" or "V-1", the UL94-5V test If neither of the criteria of "5V-A" and "5V-B" could be satisfied, the result was rejected.

(リン含有率)
海島構造の各構造中のリン元素の存在比率は走査型電子顕微鏡SEM−EDX(Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry)を用いて断面を観察し、海島構造を確認し、リン元素の存在位置を確認し、リン元素の存在量の海島構造の比率を面積比にて評価した。
(Phosphorus content)
The abundance ratio of phosphorus element in each structure of the sea island structure is determined by observing the cross section using a scanning electron microscope SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry) to confirm the sea island structure and the presence of phosphorus element. The position was confirmed, and the ratio of the abundance of phosphorus element to the sea-island structure was evaluated by the area ratio.

(PS樹脂比率)
PS樹脂の比率の数値により、コストについて評価した。
[評価基準]
ランク 配合比率(樹脂100質量部に対する配合質量部数)
◎ :25以上
〇 :15以上25未満
△ :15未満
(PS resin ratio)
The cost was evaluated by the numerical value of the ratio of PS resin.
[Evaluation criteria]
Rank compounding ratio (number of compounding masses to 100 parts by mass of resin)
◎: 25 or more 〇: 15 or more and less than 25 △: less than 15

表2−1、表2−2、表3−1、表3−2に実施例及び比較例の樹脂組成物についての樹脂組成、燐含有率、シャルピー衝撃強度、引張強度、難燃性についての数値を示す。 Table 2-1 and 2-2, Table 3-1 and Table 3-2 show the resin composition, phosphorus content, Charpy impact strength, tensile strength and flame retardancy of the resin compositions of Examples and Comparative Examples. Show the numerical value.

Figure 2021172795
Figure 2021172795

Figure 2021172795
Figure 2021172795

Figure 2021172795
Figure 2021172795

Figure 2021172795
Figure 2021172795

特開2016‐003290号公報Japanese Unexamined Patent Publication No. 2016-003290

Claims (8)

少なくともPC樹脂、PS樹脂およびリン系化合物を含有する樹脂組成物であって、
前記PC樹脂を、樹脂合計100質量部に対し70質量部以上85質量部以下含有し、
前記リン系化合物は、ホスファゼン系化合物及びリン酸エステル系化合物を含み、
前記ホスファゼン系化合物を樹脂合計100質量部に対し0.1質量部以上4.0質量部以下含有し、
前記リン酸エステル系化合物を樹脂合計100質量部に対し3.5質量部以上12質量部以下含有し、
前記PC樹脂と、前記PS樹脂とは、PC樹脂が海でPS樹脂が島である海島構造を形成しており、走査型電子顕微鏡SEM−EDX(Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry)で断面を観察したときに、リン元素の存在量の海島構造の比率が、海部分と島部分で7:3〜9:1である、
樹脂組成物。
A resin composition containing at least a PC resin, a PS resin, and a phosphorus-based compound.
The PC resin is contained in an amount of 70 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphorus-based compound includes a phosphazene-based compound and a phosphoric acid ester-based compound.
The phosphazene compound is contained in an amount of 0.1 part by mass or more and 4.0 parts by mass or less with respect to 100 parts by mass of the total resin.
The phosphoric acid ester compound is contained in an amount of 3.5 parts by mass or more and 12 parts by mass or less with respect to 100 parts by mass of the total resin.
The PC resin and the PS resin form a sea-island structure in which the PC resin is the sea and the PS resin is the island, and the scanning electron microscope SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-ray Spectrometry) is used. When observing the cross section, the ratio of the abundance of phosphorus elements to the sea-island structure is 7: 3 to 9: 1 between the sea part and the island part.
Resin composition.
ABS樹脂を樹脂合計100質量部に対し1質量部以上15質量部以下含有することを特徴とする請求項1に記載の樹脂組成物。 The resin composition according to claim 1, wherein the ABS resin is contained in an amount of 1 part by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the total resin. 前記PC樹脂を樹脂合計100質量部に対し70質量部以上85質量部以下含有する請求項1または2に記載の樹脂組成物。 The resin composition according to claim 1 or 2, wherein the PC resin is contained in an amount of 70 parts by mass or more and 85 parts by mass or less based on 100 parts by mass of the total resin. シャルピー衝撃強度が5kJ/m以上である請求項1乃至3のいずれか1項に記載の樹脂組成物。 The resin composition according to any one of claims 1 to 3, wherein the Charpy impact strength is 5 kJ / m 2 or more. 引張強度が35MPa以上である、請求項1乃至4のいずれか1項に記載の樹脂組成物。 The resin composition according to any one of claims 1 to 4, wherein the tensile strength is 35 MPa or more. 請求項1から5のいずれか1項に記載の樹脂組成物から成ることを特徴とする成形体。 A molded product comprising the resin composition according to any one of claims 1 to 5. 請求項6に記載の成形体を有することを特徴とする電子部品。 An electronic component having the molded body according to claim 6. 請求項6に記載の成形体を有することを特徴とする電子機器。

An electronic device comprising the molded product according to claim 6.

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