JPS58147441A - Synthetic resin composite material for bonding and filling - Google Patents

Abstract

PURPOSE:To provide the titled composite material emitting intense fluorescent light, having high adhesivity and good compression resistance and durability, and useful for dental, ornamental or furniture use, by adding a rare earth metal compound, etc. to a mixture of a synthetic resin adhesive with a material excitable with ultraviolet ray. CONSTITUTION:The objective material can be prepared by mixing (A) a sufficient amount (10-60vol%) of a synthetic resin adhesive as a filling base, with (B) fine powder (preferably having a surface area of >=300m<2>/g) of a compound selected from the oxide, fluoride and sulfide of rare earth metals or their mixture, (C) fine powder of the oxide, fluoride or sulfide of an element akin to rare earth element or their mixture, (D) fine powder of other metal oxide, (E) cement, glass or their mixture as a binder, and (E) a material excitable with ultraviolet ray (e.g. Y2O3:Eu<+3>, CaWO4:Pb, etc.).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite material in which a rare earth compound is mixed into a synthetic resin and a fluorescent material to increase the resistance pressure and emit fluorescence.

Conventionally, a mixture of an ordinary synthetic resin adhesive and a fluorescent material has been known, but it has high pressure resistance, strong adhesive strength, and therefore good durability, and also has good fluorescence. Even though it was essentially certain that it would occur, it was still dangerous enough.

In view of the above-mentioned current situation, a synthetic resin adhesive is used as a sufficient base material, an appropriate fluorescent material is mixed, an appropriate metal compound is added and mixed, and if necessary, cement, glass, or a mixture thereof. The object of the present invention is to provide a composite material in which an appropriate amount of the following is added and mixed. The composite material of the present invention has inherently good fluorescence, strong adhesion, good pressure resistance and durability. The present invention uses an ultraviolet excitation material, uses a rare earth oxide, fluoride, sulfide, or a mixture of two or more thereof as a metal compound, and further adds cement or amalgam.

Next, the present invention will be explained in detail. The synthetic resin adhesive used in the present invention is generally a common synthetic resin adhesive, except in special cases. As the fluorescent agent, an ultraviolet-excitable material is used.

If necessary, cement, glass, amalgam, or a mixture thereof is added and mixed. For example, amalgam, cement, or a mixture thereof is used as a dental material, glass, cement, or a mixture thereof is used as a decorative material, and a mixture of cement is used for a pedestal, parts, frame, etc. Depending on the intended use, the type, proportion, and mass should be selected accordingly, taking into account strength, durability, effectiveness, and cost, as well as whether the shape is large, medium, small, extra large, or extremely small. use

Furthermore, one or more kinds of oxides, fluorides, sulfides, or mixtures thereof, which are close to rare earth elements, are arbitrarily selected and used by adding and mixing them.

Next, each additive or mixture will be explained.

(1) As a commonly used synthetic resin adhesive, one or more of the following compounds can be arbitrarily selected and used. That is, epoxy, acrylic, acrylonitrile, polyamide, polyurethane, polyethylene, polyvinyl chloride, polypropylene, polyester, polycarbonate, polystyrene, and others. Normal 10-605
Contains vol.

(2) As the ultraviolet excitation material, one or more of the following can be arbitrarily selected and used.

(I) YIOH: Eu”, (
YOd)B(%: Eu”, BaMnA):
Bu+2+(”) 0aWO4: Pb,
Zns 5iOa: Mn (c) and other structurally similar compounds (3) There are many types of glass and cement, and their quality is diverse. These or warm mixtures include, for example, the following:

(a) kt203: Or+3. Nd Y
sAjs (%s: Nd"io) Znl
8i04, 0aWO4, 5rTi 01P→N
dP014 m (8cNd)P014 (4) Rare earth element One or more kinds of oxides, fluorides, sulfides, or mixtures thereof are arbitrarily selected from rare earths, and used by adding and mixing them.

(a) ZnO, TiOx, WOs, Mo
O3,8rO(”) LINbol m I
n103 j Eu10g T y, o, t
Lago, I I)y, O, *Ce1O1, DhO
l (・→ Pg O@ , 40. Nap
O) OaFm, TiFa, YFs (@
Gd1018. ZnS, LaS, 5nl
O1 The amount of each of these added is very small. Usually it is less than 5 vo 1%, and at most 30 %, but the total amount of several additives is 20 to 7 vo/
% range.

Embodiment 1 Next, an embodiment of the present invention will be shown and explained. The composite of this exemplary composition, now referred to as the human composite, consists of the following vo/%.

Epoxy resin monomer 22 La1O113
To PraOtt Z8 %Y, 0.
α8 '1m Eu103 Z2%Z
n25i043.0% 5ift O
,5 arrogant P snow Oh 1α479G (Nd)P
xO* 2-0%Sr0 0.4%
AJzOs o,ssTi 01 6.26
'Ik 0aF1 :1. O'
1kMn0 4.1% NdP@
014 10.9 T.

In addition to the above components, K2O, NazO, OexOs
, Snt's + DhO.

One embodiment described above is standard. The molded product made of only epoxy resin adhesive and cured at room temperature or by heating and pressurizing had a resistive pressure of 1.1"/cj,
The anti-pressure of the composite material formed by heating and pressurizing one example of the composition described above is 4.2 W/cd, which is about four times as high. In addition, it emitted purple-red fluorescence at a wavelength of 300M, and the luminescence was attractive and had a beautiful color.

The above-mentioned increase in resistive pressure and colored fluorescence shown in this example can be used as materials for dental, decorative, decorative, furniture, and other parts, and are very noticeable. It brought about good effects.

Further, from the results obtained from a series of experiments conducted, the composites shown in Table 1 were found to be extremely useful, summarizing the composition range showing the high coercive pressure and fluorescent coloring described above. .

Example λ Table - Composition of good composites, vol! T.

Next, another embodiment will be described.

Example In synthetic resins, a porous substance having countless minute holes and a surface area of about 300 wl/P or more was made into particles and mixed into a synthetic resin adhesive at 30 vol %. Composite compacts exhibited a drag force of 25-3 seas. Furthermore, α-iron oxide was added to this complex by tsvo/
Composite compacts mixed at 10% and cured in a 1000 G magnetic field exhibited a coercive pressure of 3-4 W/cd.

Furthermore, the mixtures containing the ultraviolet excitation materials used in Examples 1 and 2 exhibited extremely good fluorescent colors.

The porous materials utilized in this illustrative example are shown in Table 2.

Second Surface Large Surface Area Particles The porous materials shown in Table 2 can be used alone or in a suitable combination. As shown in Table 3, Table 3 shows the composition of the molded product with the additive mixture of acrylic resin and composite material formed at 20°C.

Furthermore, a diagram showing the relationship between porosity (surface area) and resistive pressure is shown in FIG.

Table 3 Compositions of good composite materials consisting of porous, large surface area, fine-grained oxides of rare earth elements and other non-rare earth elements and synthetic resin adhesives, vol. - Similar to the compositions shown in Tables and Table 2, those containing an ultraviolet stimulant are
It exhibits a beautiful fluorescent color. When this ultraviolet stimulant is not added, the coercive pressure is increased and a nine composite material is obtained. In the case of Table 3, the amount of iron oxide a is increased by 15%j, and when hardened in a magnetic field of 1000 Gauss, the coercive pressure is increased as shown in the OA curve in FIG. As the surface area of the particles increases, the a iron oxide increases, resulting in 300 wl
/P porous particles reach a coercive pressure of 3.0(-), and those with larger porous particles reach a coercive pressure of 4.0-.

The invention has already been described with reference to some embodiments. In the present invention, a composite material obtained by adding and mixing a synthetic resin adhesive, a rare earth oxide, and other oxides close to the rare earth to form a cured molded product has significantly increased resistance pressure. If porous fine particles with a large surface area are used as these oxides, and an appropriate amount of iron oxide fine particles are added and mixed, even higher resistance pressure can be obtained when this iron oxide-added composite material is cured in a magnetic field. .

In addition, the present invention provides that when forming a molded composite material by adding and mixing the above-mentioned oxides and curing by heating to room temperature or an appropriate temperature, the composition is cured by adding an appropriate amount of an ultraviolet stimulant to the composition. It maintains pressure reliably and emits a unique purple-red fluorescence.

Further, in the present invention, in order to improve the mixing, if necessary, an appropriate amount of cement, glass, etc. can be added and mixed to stabilize the mixture.

The composite material thus obtained can be used with very good effects as a dental material, as a decorative material, and as a component.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the relationship between the surface area of the oxide in the composition and the anti-pressure.
a Comparative diagram of cases with and without addition of iron oxide. Patent applicant: Benjo Japax Institute Co., Ltd. Agent: Patent attorney Nakanishi −

Claims (1)

[Scope of Claims] 1. Fine particles of a compound arbitrarily selected from one or more of rare earth oxides, fluorides, sulfides, or mixtures thereof, filled with a synthetic resin adhesive in a sufficient composition ratio. is added to the above synthetic resin adhesive to form a mixture, and then fine particles of a compound arbitrarily selected from among oxides, fluorides, sulfides, or mixtures thereof that are close to rare earth elements are added. Adding fine particles of a compound arbitrarily selected from one or more types of metal oxides to the above-mentioned synthetic resin adhesive mixture to form a mixture, and further adding and mixing fine particles of a compound arbitrarily selected from one or more types of metal oxides to the above-mentioned synthetic resin adhesive mixture. A mixture is formed by adding cement, glass, or one or more of these mixtures as a bonding filler to form a mixture, and the mixture is heated at room temperature or heated. A synthetic resin adhesive-filled composite material that has been hardened and strengthened to withstand pressure. 2 The surface area of fine particles of rare earth oxides, fluorides, sulfides, or mixtures thereof, oxides, fluorides, sulfides, or mixtures thereof of groups close to rare earths, and other metal oxides is 300 d11 or more A synthetic resin adhesive-filled composite material according to claim 1, which is a composite material. 3. The synthetic resin adhesive-filled composite according to claim 2, which uses fine α-iron oxide in an amount of at most 15 vol/man instead of the metal oxide to be added and mixed or a part of the mixed amount thereof. material. 4 Fine particles containing arbitrarily selected one or more types of rare earth compounds, fine particles arbitrarily selecting one or more types of compounds close to rare earth elements, and other types of metal oxides using a synthetic resin adhesive as a filling base material. fine particles arbitrarily selected from one or more of The synthetic resin adhesive-filled composite material according to claim 1, wherein the synthetic resin adhesive-filled composite material is added to form a mixture and cured to strengthen pressure resistance and generate fluorescence.