EP1238001A1 - Composant et son procede de production - Google Patents

Composant et son procede de production

Info

Publication number
EP1238001A1
EP1238001A1 EP00991059A EP00991059A EP1238001A1 EP 1238001 A1 EP1238001 A1 EP 1238001A1 EP 00991059 A EP00991059 A EP 00991059A EP 00991059 A EP00991059 A EP 00991059A EP 1238001 A1 EP1238001 A1 EP 1238001A1
Authority
EP
European Patent Office
Prior art keywords
glass
component
particles
thermoplastic
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00991059A
Other languages
German (de)
English (en)
Inventor
Robert Greiner
Angelo Polese
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1238001A1 publication Critical patent/EP1238001A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08K3/40—Glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/16—Silica-free oxide glass compositions containing phosphorus
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]

Definitions

  • the invention relates to a component that consists at least partially of a material that is a mixture of glass and plastic.
  • the invention further relates to a method for producing the component.
  • plastic materials especially based on thermoplastics.
  • a filler is added to the plastic material to improve the mechanical and thermal properties.
  • glass is used as the filler.
  • the glass is added in the form of glass fibers (glass fiber reinforced plastics).
  • mineral-filled plastic materials in which the glass is in the form of particles, which are typically approximately spherical. With such mineral-filled plastics, an isotropic damping and warping behavior can be achieved for the components made from them.
  • Such mineral-filled plastics are known, for example, from EP 0 365 236 A1 as an alloy in the form of a melt mixture of at least one inorganic glass and / or a glass ceramic and at least one organic thermoplastic or thermosetting polymer; the proportion of glass or glass ceramic is 30 to 90% by volume.
  • the glass component is a phosphate glass which has, for example, the following composition (m mol%): 44 to 58% P 2 0 5 , 4 to 10% A1 2 0 3 + B ⁇ 0 3 (with 0 to 7% A1 2 0 3 and 0 to 10% B 2 0 3 ), 10 to 45% Li ⁇ O + Na ⁇ O (with 0 to 30% L ⁇ 2 0 and 10 to 30% Na 2 0), 0 to 20% Cu ⁇ O and 10 up to 30 ° o L ⁇ , 0 + CuO ⁇ .
  • the thermoplastic polymer can be selected from the following group: polyaryl ether ketones, polyphenylene sulfides, Polyfluororesins, polyethene amides, liquid-stable polyesters, polyether sulfones, polytetrafluoroethylenes, polyether ether ketones, polyether ketones, polyethylene terephthalates, polybutyl terephthalates, melam e and polycarbonates.
  • the thermosetting polymer can be an epoxy resin, a silicone resin, a polyimide, a phenol formaldehyde resin or a diallyl phthalate.
  • Glass fiber-reinforced plastics have the disadvantage that, due to the preferred direction given by the fibers, an extremely anisotropic material behavior results, which has a particularly negative effect on the shrinkage and warpage of the component.
  • the main disadvantage of plastics provided with particulate filler is that their rigidity and heat resistance are inadequate. Since the glass filler in known components is either exclusively fibrous or exclusively particulate in the plastic, it is not possible to choose one of the above depending on the functional section of the component. To avoid disadvantages. For example, a cover cap placed on a base for a relay would be desirable, in which the cover area is mechanically stable and at the same time the area coupled to the base and connected to it is thermally stable. In addition, the processing of the plastic becomes more and more difficult as the proportion of filler increases, since the fluidity of the known glass /
  • Plastic mixtures with increasing glass content is greatly reduced. This makes it particularly difficult to manufacture thin-walled components or components with a complicated geometry.
  • the aim of the present invention is therefore to provide a component that has both areas that are mechanically stable and areas that are dimensionally and temperature-resistant.
  • the invention provides a component that consists at least partially of a glass / plastic mixture.
  • This mixture has first areas in which the glass is essentially in the form of spherical particles. Approximately spherical particles in the form of granules are also suitable as spherical particles. Furthermore, the mixture has second areas, in which the glass is in the form of fibrous particles.
  • This component according to the invention has the advantage that it is extremely low in distortion in the first regions due to the isotropy of the spherical particles, even at elevated temperatures.
  • the component m has a high mechanical stability in the second regions due to the reinforcement by the glass fibers.
  • very thin-walled components for example cover caps, should also be considered as a component. It is therefore particularly advantageous to provide a component in which the expansion of the spherical particles is less than 10 ⁇ m. In principle, this means that wall thicknesses down to 10 ⁇ m can be achieved.
  • the glass / plastic mixture as glass is a low-melting sulfophosphate glass of the following composition: 4 to 10% L ⁇ 2 0, 4 to 10% Na 2 0, 4 to 8% K 2 0, 1 to 2 % CaO, 35 to 37% ZnO, 0 to 3% La 2 0 3 , 19 to 22% P 2 0 5 and 19 to 22% SOj as well as a high-performance thermoplastic
  • a “low-melting sulfophosphate glass” is understood to mean a glass with a low glass temperature T2, in particular a glass with T2 ⁇ 300 ° C. Under the glass temperature is- to understand the temperature at which the glass softens and becomes fluid.
  • a "high-performance thermoplastic” is a high-performance plastic ("high-performance polymer *), in this case a high-temperature-resistant plastic (" heat-resistant polymer *, "high-temperature resistant polymer *).
  • the processing temperature Tl of the plastic is at least 300 ° C, since this is the only way to ensure the solder bath resistance of the components made from it.
  • the glass temperature T2 is below the processing temperature Tl, which means that the glass is in a flowable state. As a result, the glass / plastic mixture shows very good flow properties for the production of thin-walled components or components with a complicated geometry.
  • the glass / plastic mixtures according to the invention have good mechanical and thermal properties and good processing properties, in particular good flowability, even with high filler, i.e. high glass content. They are also distinguished by an excellent chemical resistance, in particular to water, acids and bases, and surprisingly without the addition of stabilizers.
  • the glass / plastic mixtures also have excellent abrasion resistance, and material recycling is possible without any problems because the glass component is not shortened, as is the case with glass fiber reinforced mixtures.
  • the glass / plastic mixtures according to the invention preferably have a glass with a glass transition temperature of 250 ° C ⁇ T2 ⁇ 280 ° C.
  • the mixtures preferably use a sulfophosphate glass of the following composition: 4.9% Li 2 0, 9.4% Na 2 0, 7.1% K 2 0, 1.6% CaO, 36.6% ZnO, 20.0% P0 5 and 20.4% S0 3 .
  • Such mixtures have a glass with a glass transition temperature T2 of 268 ° C.
  • a polyether ether ketone PEEK
  • PEEK polyether ether ketone
  • PEI polyether imide
  • PPS polyphenylene sulfide
  • PPA polyphthalamide
  • LCP liquid crystalline polymer
  • PAEK polyaryl ether ketones
  • PSU polysulfones
  • PES polyether sulfones
  • PPSU polyphenylene sulfones
  • the proportion of the glass component, i.e. of the sulfophosphate glass, on the glass / plastic mixture is preferably 15 to 60% by weight.
  • the glass content can be up to 80% by weight.
  • the mixtures can also contain conventional additives, such as color pigments and stabilizers. Possible applications include sensors, actuators, connectors, electro-optical components and relays.
  • the invention specifies a method for producing a component from a glass / plastic mixture.
  • the starting point is a mixture of a thermoplastic with a processing temperature Tl and spherical glass part ikp jn with a glass temperature T2 ⁇ Tl. From this mis hung - • _ -_ the component is molded at a temperature T3> Tl. Because of T2 ⁇ T3, the glass particles are in a flowable state. These are then stretched into fibers at places where shear forces are exerted on them.
  • the component according to the invention By producing the component according to the invention with the aid of glass particles, the glass temperature of which is below the processing temperature of the glass / plastic mixture, it is possible to give the originally spherical glass particles a new shape by exerting shear forces. Since, as already explained above, the shape of the glass particles essentially determines whether the component is predominantly mechanically stable or dimensionally stable, this makes it possible to selectively shade the component by exerting shear forces during its manufacture.
  • a method for producing a component from a glass / plastic mixture is particularly advantageous, in which glass particles with an expansion of ⁇ 10 ⁇ m are used.
  • Such glass particles allow in particular very thin-walled components, for example as a cover cap.
  • corresponding wall thicknesses down to a thickness of 10 ⁇ m can be achieved.
  • the component is particularly advantageously molded by injection molding with an injection mold.
  • the viscosity of the thermoplastic and, at least in places, the distance between opposite surfaces of the injection mold are selected such that the shear forces occurring at the interface between the injection mold and the thermoplastic flowing along act on the glass particles over the entire cross section of the component.
  • the production of a component from a glass / plastic mixture by such an injection molding method according to the invention has the advantage that the locations at which the glass is to be in the form of fibers can be determined by the choice of the component shape or the injection mold. It should be noted that with a predetermined distance between the opposing surfaces of the injection mold and thus the given wall thickness of the component, the viscosity and thus the internal friction of the thermoplastic has a decisive influence on the extent to which the shear forces occurring at the interface of the injection molding mold / thermoplastic flowing along the interior of the component are transferred.
  • a greater maximum wall thickness is permitted with a high viscosity of the thermoplastic than with a low viscosity.
  • a method is particularly advantageous in which, as a glass / plastic mixture, a mixture of particles of a low-melting sulfophosphate glass of the following composition: 4 to 10% L 2 0, 4 to 10% Na 2 0, 4 to 8% K 2 0 up to 2% CaO, 35 to 37% ZnO, 0 to 3% La 2 0 3 , 19 to 22% P 2 0 5 and 19 to 22% S0 3 as well as a high-performance thermoplastic.
  • This composition has the advantages already described above.
  • a sulfophosphate glass of the composition 4.9% L ⁇ 2 0, 9.4% Na 2 0, 7.1% K ⁇ O, 1.6% CaO, 36.6% ZnO, 20.0% P 2 Oc and 20.4% SO-.
  • a high-performance thermoplastic comes in particular from a polyether ether ketone, a polyethylene, a polyphenylene sulfide, a partially aromatic polyamide or a liquid-crystalline polymer.
  • the glass content m of the glass / plastic mixture is preferably between 15 and 60% by weight.
  • the figure shows a component according to the invention in a schematic cross section.
  • the figure shows a component 1 according to the invention, which is a cap which covers an electrical component 6 soldered into a base 5.
  • the cap or the component 1 consists of a mixture of plastic 4 and spherical glass particles 2 or fibrous glass particles 3.
  • the cap preferably has a high mechanical stability against from above coming pressure load on.
  • the glass particles are spherical O 01/44359
  • the cap preferably has a high dimensional stability. This ensures that the form fit of the cap 1 with the base 5 is present at all times, even at elevated temperatures.
  • the fibrous glass particles 3 in the upper part of the cap 1 are produced by an injection molding process using thin wall thicknesses, connection with a flowing plastic, whereby shear forces act on the interface of the injection molding for / along the thermoplastic over the entire cross section of the component on the glass particles. The shear forces are transmitted inwards through the internal friction of the thermoplastic into the component.
  • the invention is not limited to the exemplary embodiment shown, but is defined in its most general form by claim 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Glass Compositions (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un composant (1) constitué au moins en partie d'un matériau formé par un mélange verre/matière plastique. Ce composant comprend des premières zones dans lesquelles le verre se présente pratiquement sous la forme de particules sphériques (2) et des deuxièmes zones dans lesquelles le verre se présente sous la forme de particules fibreuses (3). L'avantage de ce composant réside dans le fait qu'il comprend aussi bien des zones présentant une stabilité mécanique que des zones présentant une stabilité dimensionnelle. L'invention concerne en outre un procédé de production dudit composant.
EP00991059A 1999-12-15 2000-12-13 Composant et son procede de production Withdrawn EP1238001A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19960551 1999-12-15
DE19960551 1999-12-15
PCT/DE2000/004428 WO2001044359A1 (fr) 1999-12-15 2000-12-13 Composant et son procede de production

Publications (1)

Publication Number Publication Date
EP1238001A1 true EP1238001A1 (fr) 2002-09-11

Family

ID=7932789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991059A Withdrawn EP1238001A1 (fr) 1999-12-15 2000-12-13 Composant et son procede de production

Country Status (4)

Country Link
US (1) US6734243B2 (fr)
EP (1) EP1238001A1 (fr)
JP (1) JP2003516878A (fr)
WO (1) WO2001044359A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6878765B2 (en) * 1999-12-15 2005-04-12 Siemens Aktiengesellschaft Method for producing a component and the use of said component
SG147403A1 (en) * 2007-04-23 2008-11-28 Ueno Fine Chemical Ind Liquid crystalline polymer composition and molded article made of the same
JP5712123B2 (ja) * 2011-12-26 2015-05-07 株式会社日立製作所 複合材料
US20150284550A1 (en) * 2013-10-21 2015-10-08 Massachusetts Institute Of Technology Tunable Surface Topography Through Particle-Enhanced Soft Composites
WO2020013980A1 (fr) * 2018-07-09 2020-01-16 Corning Incorporated Composites organiques/inorganiques et leurs procédés de fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5043369A (en) 1988-10-17 1991-08-27 Corning Incorporated Glass/glass-ceramic-plastic alloy articles
US5017629A (en) * 1989-03-31 1991-05-21 The B F Goodrich Company Moldable low density thermoplastic composite with hollow glass spheres and the method for compounding
JP3045304B2 (ja) * 1990-11-30 2000-05-29 東ソー株式会社 ポリフェニレンスルフィド樹脂組成物
US5328874A (en) * 1993-10-18 1994-07-12 Corning Incorporated Zinc sulfophosphate glasses
EP0773196B1 (fr) 1995-10-06 2001-07-18 Corning Incorporated Mélanges polymères/verre à composants triples
JP3772414B2 (ja) * 1996-09-26 2006-05-10 旭硝子株式会社 有機樹脂に燃焼時の発煙抑止機能を付与する低融点ガラス

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0144359A1 *

Also Published As

Publication number Publication date
JP2003516878A (ja) 2003-05-20
US6734243B2 (en) 2004-05-11
WO2001044359A1 (fr) 2001-06-21
US20030149160A1 (en) 2003-08-07

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