JP2008037019A - Transparent laminate - Google Patents

Transparent laminate Download PDF

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JP2008037019A
JP2008037019A JP2006216173A JP2006216173A JP2008037019A JP 2008037019 A JP2008037019 A JP 2008037019A JP 2006216173 A JP2006216173 A JP 2006216173A JP 2006216173 A JP2006216173 A JP 2006216173A JP 2008037019 A JP2008037019 A JP 2008037019A
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intermediate film
transparent
transparent laminate
adhesive strength
glass
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Hirozo Nakamura
浩造 中村
Tadahiko Yoshioka
忠彦 吉岡
Kazuho Uchida
かずほ 内田
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent laminate which is light in weight and excellent in fundamental performance necessary for laminated glass such as penetration resistance. <P>SOLUTION: The transparent laminate comprises an intermediate film containing an ethylene-vinyl acetate copolymer as a main component, and a glass plate and a transparent synthetic resin plate supporting the intermediate film between the plates. The adhesive strength between the intermediate film and the glass plate obtained as 90° peel strength measured at 23°C, in 50% humidity, and at a tensile speed of 500 mm/min is 0.5-8 kg/cm, and the adhesive strength between the intermediate film and the transparent synthetic resin plate is 0.5-8 kg/cm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、軽量性に優れ、耐貫通性等の合わせガラスに要求される基本性能に優れる透明積層体に関する。 The present invention relates to a transparent laminate excellent in light weight and excellent in basic performance required for laminated glass such as penetration resistance.

合わせガラスは、外部衝撃を受けて破損してもガラスの破片が飛散することが少なく安全であるため、自動車等の車両、航空機、建築物等の窓ガラス等として広く使用されている。合わせガラスとしては、例えば、特許文献1に開示されているような、少なくとも一対のガラス間に、例えば、可塑剤により可塑化されたポリビニルブチラール樹脂等のポリビニルアセタール樹脂からなる中間膜を介在させ、一体化させたもの等が挙げられる。 Laminated glass is widely used as a window glass for vehicles such as automobiles, aircrafts, buildings, and the like because it is safe because it does not scatter glass fragments even if it is damaged by an external impact. As the laminated glass, for example, an intermediate film made of polyvinyl acetal resin such as polyvinyl butyral resin plasticized with a plasticizer is interposed between at least a pair of glasses as disclosed in Patent Document 1, What was integrated is mentioned.

近年、軽量化やコスト等の問題から、合わせガラス全体の厚さを薄くすることが試みられている。しかし、合わせガラス全体の厚さを薄くすると、衝撃音や低周波音等の種々の振動や騒音を遮蔽する性能が低下するという問題がある。 In recent years, attempts have been made to reduce the thickness of the entire laminated glass due to problems such as weight reduction and cost. However, when the thickness of the entire laminated glass is reduced, there is a problem that the performance of shielding various vibrations and noises such as impact sounds and low frequency sounds is deteriorated.

このような問題に対し、そこで、合わせガラスの代替品として、ガラス板とポリカーボネート板とを併用した透明積層体を用いることで、ガラスの有する性能を維持したまま軽量化を図ることが検討されている。
しかしながら、ガラスとポリカーボネートという全く異種の材料からなる板を中間膜を介して貼り合わせた場合、耐貫通性等の合わせガラスに要求される種々の性能を発揮できないことがあるという問題があった。
特開平11−147736号公報
For such problems, therefore, as a substitute for laminated glass, by using a transparent laminate in which a glass plate and a polycarbonate plate are used in combination, it has been studied to reduce the weight while maintaining the performance of the glass. Yes.
However, when plates made of completely different materials such as glass and polycarbonate are bonded via an intermediate film, there is a problem that various performances required for laminated glass such as penetration resistance may not be exhibited.
Japanese Patent Laid-Open No. 11-147736

本発明は、上記現状に鑑み、軽量性に優れ、耐貫通性等の合わせガラスに要求される基本性能に優れる透明積層体を提供することを目的とする。 An object of this invention is to provide the transparent laminated body which is excellent in the basic performance requested | required of laminated glasses, such as the lightness and penetration resistance, in view of the said present condition.

本発明は、エチレン−酢酸ビニル共重合体を主成分とする中間膜と、前記中間膜を挟持するガラス板及び透明合成樹脂板とからなる透明積層体であって、温度23℃、湿度50%、500mm/分の引っ張りスピードでの90度ピール強度として求めた前記中間膜と前記ガラス板との接着強度が0.5〜8kg/cm、前記中間膜と前記透明合成樹脂板との接着強度が0.5〜8kg/cmである透明積層体である。
以下に本発明を詳述する。
The present invention is a transparent laminate comprising an intermediate film mainly composed of an ethylene-vinyl acetate copolymer, a glass plate and a transparent synthetic resin plate sandwiching the intermediate film, and has a temperature of 23 ° C. and a humidity of 50%. The adhesive strength between the intermediate film and the glass plate determined as 90 degree peel strength at a pulling speed of 500 mm / min is 0.5 to 8 kg / cm, and the adhesive strength between the intermediate film and the transparent synthetic resin plate is It is a transparent laminated body which is 0.5-8 kg / cm.
The present invention is described in detail below.

本発明者らは、鋭意検討の結果、中間膜としてエチレン−酢酸ビニル共重合体を主成分とし、該中間膜とガラス板との接着強度及び該中間膜と透明合成樹脂板との接着強度を一定の範囲にすることにより、耐貫通性等の合わせガラスに要求される基本性能を充分に満たした透明積層体が得られるということを見出し、本発明を完成させるに至った。 As a result of intensive studies, the present inventors have made ethylene-vinyl acetate copolymer as a main component as an intermediate film, and determined the adhesive strength between the intermediate film and the glass plate and the adhesive strength between the intermediate film and the transparent synthetic resin plate. The inventors found that a transparent laminate sufficiently satisfying the basic performance required for laminated glass such as penetration resistance can be obtained by setting it within a certain range, and the present invention has been completed.

本発明の透明積層体は、エチレン−酢酸ビニル共重合体を主成分とする中間膜と、上記中間膜を挟持するガラス板及び透明合成樹脂板とからなる。 The transparent laminate of the present invention comprises an intermediate film mainly composed of an ethylene-vinyl acetate copolymer, and a glass plate and a transparent synthetic resin plate sandwiching the intermediate film.

上記中間膜は、エチレン−酢酸ビニル共重合体を主成分とする。
上記エチレン−酢酸ビニル共重合体を主成分とすることにより、通常の中間膜のように可塑剤を含有しなくとも可塑性を有するため、可塑剤が中間膜の表面に移行して透明合成樹脂を劣化させるという恐れがない。
The intermediate film has an ethylene-vinyl acetate copolymer as a main component.
By having the ethylene-vinyl acetate copolymer as a main component, it has plasticity even if it does not contain a plasticizer as in a normal interlayer film. There is no fear of deteriorating.

上記エチレン−酢酸ビニル共重合体は、その構成成分として酢酸ビニルの含有量の好ましい下限が10重量%、好ましい上限が40重量%である。10重量%未満であると、得られる中間膜の引張り強度は充分であるが透明性が低下することがあり、40重量%を超えると、得られる中間膜の透明性は向上するが引張り強度等の機械的強度が低下することがある。 The ethylene-vinyl acetate copolymer has a preferred lower limit of the content of vinyl acetate as a constituent component of 10% by weight and a preferred upper limit of 40% by weight. If it is less than 10% by weight, the tensile strength of the obtained interlayer film is sufficient, but the transparency may be lowered. If it exceeds 40% by weight, the transparency of the obtained interlayer film is improved, but the tensile strength, etc. The mechanical strength of the may decrease.

上記エチレン−酢酸ビニル共重合体は、メルトインデックス(MI)の好ましい下限が1g/10分、好ましい上限が200g/10分である。1g/10分未満であると、得られる中間膜の流動性が低下して合わせ加工性(脱気性、加工時間)が低下することがあり、200g/10分を超えると、得られる中間膜の粘性が低下して合わせ加工後に中間膜が端部からはみ出したり厚みが減少したりし、また、透明積層体を製造したときにその耐衝撃性が低下することがある。 The ethylene-vinyl acetate copolymer has a preferred lower limit of melt index (MI) of 1 g / 10 minutes and a preferred upper limit of 200 g / 10 minutes. If it is less than 1 g / 10 minutes, the fluidity of the resulting interlayer film may be reduced and the combined workability (deaeration property, processing time) may be reduced. If it exceeds 200 g / 10 minutes, the resulting interlayer film The viscosity is lowered and the intermediate film protrudes from the end portion or decreases in thickness after the laminating process, and when the transparent laminate is produced, the impact resistance may be lowered.

上記エチレン−酢酸ビニル共重合体の数平均分子量としては特に限定されないが、好ましい下限は3000、好ましい上限は50万である。3000未満であると、流動性が過度に大きくなり、50万を超えると、流動性が低下するために合わせ加工性に問題が生じる場合がある。より好ましい下限は5000、より好ましい上限は30万、更に好ましい下限は1万、更に好ましい上限は25万である。 The number average molecular weight of the ethylene-vinyl acetate copolymer is not particularly limited, but a preferable lower limit is 3000 and a preferable upper limit is 500,000. If it is less than 3000, the fluidity becomes excessively large, and if it exceeds 500,000, the fluidity is lowered, so that there may be a problem in the workability. A more preferred lower limit is 5000, a more preferred upper limit is 300,000, a still more preferred lower limit is 10,000, and a still more preferred upper limit is 250,000.

また、上記エチレン−酢酸ビニル共重合体は、必要に応じて可塑化、部分鹸化、酸変性、架橋等の変性が行われた変性物であってもよい。 In addition, the ethylene-vinyl acetate copolymer may be a modified product subjected to modification such as plasticization, partial saponification, acid modification, and crosslinking as necessary.

上記エチレン−酢酸ビニル共重合体の製造方法としては特に限定されず、例えば、高圧法、乳化法等の公知の製造方法によって製造することができる。 It does not specifically limit as a manufacturing method of the said ethylene-vinyl acetate copolymer, For example, it can manufacture by well-known manufacturing methods, such as a high pressure method and an emulsification method.

上記中間膜は、必要に応じて、酸化防止剤、光安定剤、難燃剤、帯電防止剤、耐湿剤、熱線反射剤、熱線吸収剤等の添加剤を含有してもよい。 The intermediate film may contain additives such as an antioxidant, a light stabilizer, a flame retardant, an antistatic agent, a moisture resistant agent, a heat ray reflective agent, and a heat ray absorbent, as necessary.

上記中間膜の厚さとしては特に限定されないが、透明積層体としたときに最小限必要な耐貫通性や耐候性を考慮すると、実用的な好ましい下限は0.3mm、好ましい上限は0.8mmである。 The thickness of the intermediate film is not particularly limited, but considering the minimum necessary penetration resistance and weather resistance when making a transparent laminate, the practical preferred lower limit is 0.3 mm, and the preferred upper limit is 0.8 mm. It is.

上記中間膜の製造方法としては特に限定されず、例えば、押出成形法、プレス成型法、ロール成型法、射出成型法等による方法が挙げられる。 The method for producing the intermediate film is not particularly limited, and examples thereof include a method using an extrusion molding method, a press molding method, a roll molding method, an injection molding method, and the like.

本発明の透明積層体は、上記中間膜を挟持するガラス板及び透明合成樹脂板を有する。
上記ガラス板としては特に限定されず、ソーダ石灰ガラス板、リン珪酸ガラス板、石英ガラス板等、従来公知の透明ガラス板等を用いることができる。
上記透明合成樹脂板としては特に限定されず、公知のポリカーボネート板や、アクリル板、塩化ビニル板等を用いることができ、更に表面にシリコンハードコート等の透明プラスチック層が積層された透明合成樹脂板等を用いることができる。
The transparent laminate of the present invention has a glass plate and a transparent synthetic resin plate that sandwich the intermediate film.
It does not specifically limit as said glass plate, A conventionally well-known transparent glass plate etc., such as a soda-lime glass plate, a phosphosilicate glass plate, a quartz glass plate, can be used.
The transparent synthetic resin plate is not particularly limited, and a known polycarbonate plate, acrylic plate, vinyl chloride plate or the like can be used, and a transparent synthetic resin plate having a transparent plastic layer such as a silicon hard coat laminated on the surface. Etc. can be used.

本発明の透明積層体の製造方法としては特に限定されず、従来公知の方法を用いることができる。 It does not specifically limit as a manufacturing method of the transparent laminated body of this invention, A conventionally well-known method can be used.

本発明の透明積層体は、温度23℃、湿度50%、500mm/分の引っ張りスピードでの90度ピール強度として求めた上記中間膜と上記ガラス板との接着強度の下限が0.5kg/cm、上限が8kg/cmである。0.5kg/cm未満であると、使用とともに中間膜とガラス板とが剥離し、透明積層体中に水等が浸入し、白化の原因となり、8kg/cmを超えると、透明積層体としての衝撃吸収力が弱くなり、耐衝撃性に劣る。好ましい下限は1kg/cm、好ましい上限は5kg/cmである。 In the transparent laminate of the present invention, the lower limit of the adhesive strength between the intermediate film and the glass plate determined as a 90 degree peel strength at a temperature of 23 ° C., a humidity of 50%, and a pulling speed of 500 mm / min is 0.5 kg / cm. The upper limit is 8 kg / cm. If it is less than 0.5 kg / cm, the interlayer film and the glass plate peel off with use, water and the like enter the transparent laminate, and cause whitening. If it exceeds 8 kg / cm, Shock absorption is weak and impact resistance is poor. A preferred lower limit is 1 kg / cm and a preferred upper limit is 5 kg / cm.

本発明の透明積層体は、温度23℃、湿度50%、500mm/分の引っ張りスピードでの90度ピール強度として求めた上記中間膜と上記透明合成樹脂板との接着強度の下限が0.5kg/cm、上限が8kg/cmである。0.5kg/cm未満であると、使用とともに中間膜と透明合成樹脂板とが剥離し、透明積層体中に水等が浸入し、白化の原因となり、8kg/cmを超えると、透明積層体としての衝撃吸収力が弱くなり、耐衝撃性に劣る。好ましい下限は1kg/cm、好ましい上限は5kg/cmである。 In the transparent laminate of the present invention, the lower limit of the adhesive strength between the intermediate film and the transparent synthetic resin plate determined as 90 ° peel strength at a temperature of 23 ° C., a humidity of 50%, and a pulling speed of 500 mm / min is 0.5 kg. / Cm, upper limit is 8 kg / cm. If it is less than 0.5 kg / cm, the interlayer film and the transparent synthetic resin plate peel off with use, water and the like enter the transparent laminate, and cause whitening. If it exceeds 8 kg / cm, the transparent laminate As a result, the impact absorbing power of the material becomes weak and the impact resistance is poor. A preferred lower limit is 1 kg / cm and a preferred upper limit is 5 kg / cm.

エチレン−酢酸ビニルからなる中間膜は、一般にガラス板や透明合成樹脂板との接着強度が低く、上述した本発明で規定する接着強度を達成するためには、中間膜の一方の面、又は、両方の面に適宜処理等を施す必要がある。 An intermediate film made of ethylene-vinyl acetate generally has low adhesive strength with a glass plate or a transparent synthetic resin plate, and in order to achieve the adhesive strength defined in the present invention described above, one surface of the intermediate film, or It is necessary to appropriately treat both surfaces.

上記中間膜と上記ガラス板又は透明合成樹脂板との接着強度を高く調整する方法としては特に限定されず、例えば、上記中間膜のうち上記ガラス板又は透明合成樹脂板と接する表面に、カップリング剤を分散させる又は塗布する方法、コロナ処理を施す等の方法が挙げられる。 The method for adjusting the adhesive strength between the intermediate film and the glass plate or the transparent synthetic resin plate to be high is not particularly limited. For example, coupling is performed on the surface of the intermediate film that is in contact with the glass plate or the transparent synthetic resin plate. Examples thereof include a method of dispersing or coating the agent and a method of performing corona treatment.

上記カップリング剤としては、例えば、アミノ基、グリシジル基及びメルカプト基からなる群より選択される少なくとも1種を有するシランカップリング剤が好適である。 As the coupling agent, for example, a silane coupling agent having at least one selected from the group consisting of an amino group, a glycidyl group and a mercapto group is suitable.

上記アミノ基を有するシランカップリング剤としては、例えば、3−アミノプロピルジメチルエトキシシラン、3−アミノプロピルメチルジエトキシシラン、3−アミノプロピルトリメトキシシラン、3−アミノプロピルトリエトキシシラン、N−(2−アミノエチル)−3−アミノプロピルメチルジメトキシシラン、N−(2−アミノエチル)−3−アミノプロピルトリメトキシシラン等が挙げられる。 Examples of the silane coupling agent having an amino group include 3-aminopropyldimethylethoxysilane, 3-aminopropylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N- ( 2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane and the like.

上記グリシジル基を有するシランカップリング剤はとして、例えば、3−グリシドキシプロピルジメチルエトキシシラン、(3−グリシドキシプロピル)メチルジエトキシシラン、3−グリシドキシプロピルトリメトキシシラン等が挙げられる。 Examples of the silane coupling agent having a glycidyl group include 3-glycidoxypropyldimethylethoxysilane, (3-glycidoxypropyl) methyldiethoxysilane, and 3-glycidoxypropyltrimethoxysilane. .

上記メルカプト基を有するシランカップリング剤としては、例えば、メルカプトメチルジメチルエトキシシラン、(メルカプトメチル)メチルジエトキシシラン、3−メルカプトプロピルメチルジメトキシシラン、3−メルカプトプロピルトリメトキシシラン、3−メルカプトプロピルトリエトキシシラン等が挙げられる。 Examples of the silane coupling agent having a mercapto group include mercaptomethyldimethylethoxysilane, (mercaptomethyl) methyldiethoxysilane, 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltrimethoxysilane, and 3-mercaptopropyltri An ethoxysilane etc. are mentioned.

上記中間膜と上記ガラス板又はポリカーボネート板との接着強度を低く調整する方法としては特に限定されず、例えば、上記中間膜のうち上記ガラス板又は透明合成樹脂板と接する表面に、フッ素系樹脂、シリコーン系樹脂、シリコーンゴム微粒子、熱可塑性シリコーン剤を分散させる又は塗布する等の方法が挙げられる。 The method for adjusting the adhesive strength between the intermediate film and the glass plate or the polycarbonate plate is not particularly limited. For example, on the surface of the intermediate film in contact with the glass plate or the transparent synthetic resin plate, Examples thereof include a method of dispersing or coating a silicone resin, silicone rubber fine particles, and a thermoplastic silicone agent.

上記フッ素系樹脂としては特に限定されないが、含フッ素モノマーの単独重合体、共重合体(フッ素を含まないオレフィン、例えば、エチレン、プロピレン等)、及び、これら同士のブレンド物や非フッ素(共)重合体とのブレンド物であることが好ましい。具体的には例えば、テトラフルオロエチレン、ヘキサフルオロプロピレン及びフッ化ビニリデンからなる3元共重合体、ポリフッ化ビニリデン、クロロトリフルオロエチレン・エチレン共重合体、テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体、エチレン−テトラフルオロエチレン共重合体、テトラフルオロエチレンとパーフルオロアルコキシエチレンとの共重合体等が挙げられる。なかでも、融点が300℃以下の樹脂は成形時の樹脂劣化が起きにくいため、テトラフルオロエチレン、ヘキサフルオロプロピレン及びフッ化ビニリデンからなる3元共重合体が好適である。 Although it does not specifically limit as said fluororesin, The homopolymer of a fluorine-containing monomer, a copolymer (The olefin which does not contain a fluorine, for example, ethylene, propylene, etc.), and a blend thing or non-fluorine (co) of these mutually A blend with a polymer is preferred. Specifically, for example, a terpolymer composed of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, polyvinylidene fluoride, chlorotrifluoroethylene / ethylene copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, Examples thereof include a tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer, an ethylene-tetrafluoroethylene copolymer, and a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene. Among them, a terpolymer composed of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride is preferable because a resin having a melting point of 300 ° C. or less hardly undergoes resin deterioration during molding.

上記シリコーン系樹脂としては、熱可塑性のポリオルガノシロキサン骨格(ポリオルガノシロキサンとしてはポリジメチルシロキサン、ポリメチルプロピルシロキサン、ポリジプロピルシロキサン、ポリメチルオクチルシロキサン、ポリジオクチルシロキサン、ポリメチルフェニルシロキサン、ポリジフェニルシロキサン等)を分子鎖中に含有する重合体であり、溶融成形が可能であれば特に制限されず、例えば、ポリオルガノシロキサンをグラフト鎖として有するポリエチレンやポリプロピレン等の重合体、ポリオルガノシロキサン・ポリウレアからなるブロック共重合体等が挙げられる。なかでも、上記フッ素系樹脂と同様に融点が300℃以下の樹脂が好ましく、特に高い離型性とポリオレフィンとの相溶性とのバランスに優れることから、ポリオルガノシロキサン・ポリウレアからなるブロック共重合体が好適である。 Examples of the silicone resins include thermoplastic polyorganosiloxane skeletons (polyorganosiloxanes include polydimethylsiloxane, polymethylpropylsiloxane, polydipropylsiloxane, polymethyloctylsiloxane, polydioctylsiloxane, polymethylphenylsiloxane, polydiphenylsiloxane) Etc.) in the molecular chain and is not particularly limited as long as it can be melt-molded. For example, a polymer such as polyethylene or polypropylene having a polyorganosiloxane as a graft chain, polyorganosiloxane / polyurea And a block copolymer. Among them, a resin having a melting point of 300 ° C. or less is preferable like the above fluororesin, and a block copolymer made of polyorganosiloxane / polyurea is particularly excellent in the balance between high releasability and compatibility with polyolefin. Is preferred.

上記中間膜中に、カップリング剤やフッ素系樹脂、シリコーン系樹脂等を分散させる場合には、表面のみに分散するように中間膜の作製時に混練方法等を適宜調整してもよいし、カップリング剤やフッ素系樹脂、シリコーン系樹脂等を含有しない樹脂膜の表面に、カップリング剤やフッ素系樹脂、シリコーン系樹脂等が分散した樹脂膜を積層させて複数の層からなる中間膜としてもよい。 In the case where a coupling agent, a fluorine resin, a silicone resin, or the like is dispersed in the intermediate film, the kneading method or the like may be appropriately adjusted during the preparation of the intermediate film so as to disperse only on the surface. An intermediate film consisting of a plurality of layers can be obtained by laminating a resin film in which a coupling agent, fluorine resin, silicone resin, etc. are dispersed on the surface of a resin film that does not contain a ring agent, fluorine resin, silicone resin, etc. Good.

本発明の透明積層体は、中間膜とガラス板との接着強度及び中間膜と透明合成樹脂板との接着強度を上記範囲に規定することにより、軽量性に優れ、耐貫通性等の合わせガラスに要求される基本性能に優れたものとなることから、例えば、自動車のフロントガラス、サイドガラス、リアガラス、ルーフガラス;航空機や電車等の乗り物のガラス部位、建築用ガラス等に好適に用いることができる。 The transparent laminate of the present invention is excellent in light weight and laminated glass such as penetration resistance by regulating the adhesive strength between the intermediate film and the glass plate and the adhesive strength between the intermediate film and the transparent synthetic resin plate within the above ranges. For example, it can be suitably used for automobile windshields, side glass, rear glass, roof glass; glass parts of vehicles such as aircraft and trains, architectural glass, and the like. .

本発明によれば、軽量性に優れ、耐貫通性等の合わせガラスに要求される基本性能に優れる透明積層体を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the transparent laminated body which is excellent in the basic performance requested | required of laminated glasses, such as excellent in lightweight and penetration resistance, can be provided.

以下に実施例を掲げて本発明を更に詳しく説明するが、本発明はこれら実施例のみに限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

(実施例1)
(1)中間膜の作製
エチレン−酢酸ビニル共重合体(三井デュポンポリケミカル社製「EVAFLEX360」)100重量部、ジベンジリデンソルビトール(チバ・スペシャルティー・ケミカルズ社製「IRGACLEAR D」)0.1重量部、及び、N−(2−アミノエチル)―3−アミノプロピルトリメトキシシラン(チッ素社製)0.2重量部をミキシングローラーで混練し、押出機により金型よりシート状に押し出して、厚さ0.4mmの樹脂膜Aを得た。
また、エチレン−酢酸ビニル共重合体(三井デュポンポリケミカル社製「EVAFLEX360」)100重量部、ジベンジリデンソルビトール(チバ・スペシャルティー・ケミカルズ社製「IRGACLEAR D」)0.1重量部、及び、N−(2−アミノエチル)―3−アミノプロピルトリメトキシシラン(チッ素社製)0.2重量部、熱可塑性シリコーン樹脂(WACKER SILICONES社製「GENIOMER140」)0.5重量部をミキシングローラーで混練し、押出機により金型よりシート状に押し出して、厚さ0.4mmの樹脂膜Bを得た。
(Example 1)
(1) Preparation of interlayer film 100 parts by weight of ethylene-vinyl acetate copolymer ("EVAFLEX 360" manufactured by Mitsui DuPont Polychemical Co., Ltd.), 0.1 weight of dibenzylidene sorbitol ("IRGACLEAR D" manufactured by Ciba Specialty Chemicals Co., Ltd.) Part, and 0.2 parts by weight of N- (2-aminoethyl) -3-aminopropyltrimethoxysilane (made by Nitrogen Corporation) with a mixing roller, and extruded from a mold into a sheet by an extruder, A resin film A having a thickness of 0.4 mm was obtained.
Also, 100 parts by weight of an ethylene-vinyl acetate copolymer (“EVAFLEX 360” manufactured by Mitsui DuPont Polychemical Co., Ltd.), 0.1 part by weight of dibenzylidene sorbitol (“IRGACLEAR D” manufactured by Ciba Specialty Chemicals Co., Ltd.), and N Kneading 0.2 parts by weight of (2-aminoethyl) -3-aminopropyltrimethoxysilane (made by nitrogen) and 0.5 parts by weight of thermoplastic silicone resin (“GENIOMER140” made by WACKER SILICONES) with a mixing roller And it extruded from the metal mold | die with the extruder, and obtained the resin film B of thickness 0.4mm.

(2)透明積層体の作製
得られた樹脂膜A及びBを、ポリカーボネート板(帝人化成社製、商品名「PC−7129」)(30cm×30cm、厚み2mm)と、フロートガラス(旭ガラス社製)(30cm×30cm、厚み2mm)とで、樹脂膜Aがフロートガラスと、樹脂膜Bがポリカーボネート板に接するように挟み積層体を得た。得られた積層体を真空バッグに入れて真空度10torrで20分間脱気し、脱気状態を保持したまま積層体の入った真空バッグをオーブンに移し、100℃で30分間保持して透明積層体を得た。
(2) Preparation of Transparent Laminate The obtained resin films A and B were prepared by using a polycarbonate plate (trade name “PC-7129” manufactured by Teijin Chemicals Ltd.) (30 cm × 30 cm, thickness 2 mm) and float glass (Asahi Glass Co., Ltd.). (Manufactured) (30 cm × 30 cm, thickness 2 mm), and the resin film A was sandwiched between the float glass and the resin film B in contact with the polycarbonate plate to obtain a laminate. The obtained laminate is put in a vacuum bag and deaerated at a vacuum degree of 10 torr for 20 minutes. The vacuum bag containing the laminate is transferred to an oven while maintaining the deaerated state, and kept at 100 ° C. for 30 minutes to be transparent laminated. Got the body.

(比較例1)
樹脂膜Aを2枚重ねて樹脂膜としたこと以外は、実施例1と同様にして透明積層体を作製した。
(Comparative Example 1)
A transparent laminate was produced in the same manner as in Example 1 except that two resin films A were stacked to form a resin film.

<評価>
実施例1及び比較例1で得られた透明積層体について以下の評価を行った。結果を表1に示した。
<Evaluation>
The following evaluation was performed on the transparent laminates obtained in Example 1 and Comparative Example 1. The results are shown in Table 1.

(1)接着強度測定用透明積層体の作製
ポリカーボネートとの接着力測定サンプル:幅2cm、長さ15cmのガラス板及びポリカーボネート板に中間膜A及びB、離型PETを配して真空バッグに入れて真空度10torrで20分間脱気し、脱気状態を保持したまま積層体の入った真空バッグをオーブンに移し、100℃で30分間保持して透明積層体を得た。ポリカーボネートと中間膜Aが接着する長さは5cmとして接着力測定サンプルを得た。
ガラスとの接着力測定サンプル:ポリカーボネートとの接着力測定サンプルで、ガラス板とポリカーボネート板及び中間膜AとBを入れ替えることで接着力測定サンプルを得た。
(1) Preparation of transparent laminate for measuring adhesive strength Adhesive strength measurement sample with polycarbonate Samples: Intermediate films A and B and release PET are placed on a glass plate and a polycarbonate plate having a width of 2 cm and a length of 15 cm and placed in a vacuum bag. The vacuum bag containing the laminate was transferred to an oven while maintaining the deaerated state for 20 minutes at a vacuum degree of 10 torr, and kept at 100 ° C. for 30 minutes to obtain a transparent laminate. The length of adhesion between the polycarbonate and the intermediate film A was 5 cm, and an adhesive strength measurement sample was obtained.
Adhesive strength measurement sample with glass: Adhesive strength measurement sample with polycarbonate, an adhesive strength measurement sample was obtained by replacing the glass plate, the polycarbonate plate, and the intermediate films A and B.

(2)接着強度測定
温度23℃、湿度50%で4時間保持した接着力測定サンプルを用い、定速引っ張り試験機「テンシロンUCE500」(オリエンテック社製)にて500mm/分の引っ張りスピードで90度ピール強度を測定した。
(2) Adhesive strength measurement Using an adhesive strength measurement sample held at a temperature of 23 ° C. and a humidity of 50% for 4 hours, using a constant speed tensile tester “Tensilon UCE500” (Orientec Co., Ltd.) at a pulling speed of 500 mm / min. The peel strength was measured.

(3)耐衝撃試験
JIS R 3205に準拠して実施した。すなわち、温度23℃、湿度50%で4時間保持した透明積層体を支持枠に垂直に保持し、重量45kg、最大径75mmの加撃体を30cmの高さから振り子式に透明積層体の中心に自由落下させた。破壊部分に直径75mmの球が自由に通過できる開口を生じた場合を×、生じなかった場合を○とした。
(3) Impact resistance test It was carried out according to JIS R 3205. That is, a transparent laminate held at a temperature of 23 ° C. and a humidity of 50% for 4 hours is held perpendicular to the support frame, and an impactor having a weight of 45 kg and a maximum diameter of 75 mm is pendulum-type from a height of 30 cm to the center of the transparent laminate. Was allowed to fall freely. The case where an opening through which a sphere having a diameter of 75 mm can freely pass was formed in the fractured portion was marked with x, and the case where it did not occur was marked with ◯.

(4)ヘイズ値の測定
得られた透明積層体を、メタルウェザー耐候性評価試験器(ダイプラウィンテス社製)に供給して、BP温度50℃、照射強度48mW/cm、シャワーなし、150時間連続照射後取り出しの条件で耐候劣化促進試験を行った。
照射前と照射後の透明積層体のヘイズ値(%)をヘイズメーター(日本電色工業社製、商品名「TC−H3P」)で測定した。
(4) Measurement of haze value The obtained transparent laminate was supplied to a metal weather weathering evaluation tester (manufactured by Daipura Wintes Co., Ltd.), BP temperature 50 ° C., irradiation intensity 48 mW / cm 2 , no shower, 150 A weathering deterioration acceleration test was conducted under the conditions of taking out after continuous irradiation for a period of time.
The haze value (%) of the transparent laminate before and after irradiation was measured with a haze meter (trade name “TC-H3P” manufactured by Nippon Denshoku Industries Co., Ltd.).

Figure 2008037019
Figure 2008037019

本発明によれば、軽量性に優れ、耐貫通性等の合わせガラスに要求される基本性能に優れる透明積層体を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the transparent laminated body which is excellent in the basic performance requested | required of laminated glasses, such as excellent in lightweight and penetration resistance, can be provided.

Claims (5)

エチレン−酢酸ビニル共重合体を主成分とする中間膜と、前記中間膜を挟持するガラス板及び透明合成樹脂板とからなる透明積層体であって、温度23℃、湿度50%、500mm/分の引っ張りスピードでの90度ピール強度として求めた前記中間膜と前記ガラス板との接着強度が0.5〜8kg/cm、前記中間膜と前記透明合成樹脂板との接着強度が0.5〜8kg/cmであることを特徴とする透明積層体。 A transparent laminate comprising an intermediate film comprising an ethylene-vinyl acetate copolymer as a main component, a glass plate and a transparent synthetic resin plate sandwiching the intermediate film, and having a temperature of 23 ° C., a humidity of 50%, and 500 mm / min. The adhesive strength between the intermediate film and the glass plate determined as 90 degree peel strength at a tensile speed of 0.5 to 8 kg / cm, and the adhesive strength between the intermediate film and the transparent synthetic resin plate is 0.5 to A transparent laminate, characterized by being 8 kg / cm. 中間膜は、アミノ基、グリシジル基及びメルカプト基からなる群より選択される少なくとも1種を有するシランカップリング剤を含有することを特徴とする請求項1記載の透明積層体。 The transparent laminate according to claim 1, wherein the intermediate film contains a silane coupling agent having at least one selected from the group consisting of an amino group, a glycidyl group, and a mercapto group. 中間膜は、フッ素系樹脂又はシリコーン系樹脂を含有することを特徴とする請求項1又は2記載の透明積層体。 The transparent laminate according to claim 1 or 2, wherein the intermediate film contains a fluorine resin or a silicone resin. フッ素系樹脂は、テトラフルオロエチレン、ヘキサフルオロプロピレン及びフッ化ビニリデンからなる3元共重合体であることを特徴とする請求項3記載の透明積層体。 4. The transparent laminate according to claim 3, wherein the fluororesin is a terpolymer comprising tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride. シリコーン系樹脂は、ポリオルガノシロキサン・ポリウレアからなるブロック共重合体であることを特徴とする請求項3記載の透明積層体。
4. The transparent laminate according to claim 3, wherein the silicone resin is a block copolymer made of polyorganosiloxane / polyurea.
JP2006216173A 2006-08-08 2006-08-08 Transparent laminate Pending JP2008037019A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011118478A1 (en) 2010-03-25 2011-09-29 旭硝子株式会社 Method of manufacturing vehicle window pane member
JP2011194586A (en) * 2010-03-17 2011-10-06 Nippon Electric Glass Co Ltd Window plate
JP2015000495A (en) * 2013-06-14 2015-01-05 小島プレス工業株式会社 Resin product and method for manufacturing the same
WO2017154718A1 (en) * 2016-03-09 2017-09-14 日本ゼオン株式会社 Assembly, method for producing same, and sheet comprising modified block copolymer hydride

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011194586A (en) * 2010-03-17 2011-10-06 Nippon Electric Glass Co Ltd Window plate
WO2011118478A1 (en) 2010-03-25 2011-09-29 旭硝子株式会社 Method of manufacturing vehicle window pane member
JP2015000495A (en) * 2013-06-14 2015-01-05 小島プレス工業株式会社 Resin product and method for manufacturing the same
WO2017154718A1 (en) * 2016-03-09 2017-09-14 日本ゼオン株式会社 Assembly, method for producing same, and sheet comprising modified block copolymer hydride
JPWO2017154718A1 (en) * 2016-03-09 2019-01-10 日本ゼオン株式会社 Bonded body, method for producing the same, and sheet comprising modified block copolymer hydride

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