SK81194A3 - Structure of glass silk for lining of thermoisolating constructional part and method of its manufacture - Google Patents

Abstract

A fibre glass structure, e.g. for thermal insulation, comprises at least two mechanically interconnected glass fibres (11, 13; 21, 24) of different kinds, one of them being relatively high-temperature resistant, e.g. quartz glass, and the other being less temperature resistant, such as normal glass. If the structure is a woven structure, the fibres are largely of normal glass with certain of the warp and/or weft fibres (21, 23) replaced by fibres of quartz glass (22, 24). Alternatively quartz glass fibres (11, 12) may be included in the core and sheath of a twisted yarn or in a plaited yarn also containing normal glass fibres and the composite yarn may be woven or knitted. <IMAGE>

Description

The structure of the glass silk (2) for lining the heat-insulating component consists of a plurality of glass silk fibers (21 to 24), the smallest part of which consists of high temperature quartz glass and the largest part of ordinary glass less temperature resistant. Fibers of quartz glass silk are regularly arranged in the fabric of the glass silk structure (2). Each fifth warp thread (24) and each fifth weft thread (22) consists of quartz glass. The warp and weft fibers (23, 21) lying between them consist of conventional glass.

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Structure of glass silk for lining of thermal insulating component and method of its production

Technical field

The invention is. relates to a glass silk structure for at least a partial lining of a heat-insulating component and a method for producing it.

The prior art

A preferred use of glass silk structures of this kind is in the thermal insulation cladding between the core of the heat store and the shell of the storage heater.

However, with the same advantages, one can

Structure of glass silk used on the cladding of thermal insulation components of the devices. e.g. oil or gas boilers. As a rule, it is arranged between the sheath

Other heating heating medium surrounding the combustion chamber and outer jacket.

Known glass silk structures on the cladding of the heat-insulating component, e.g. in the form of a glass silk bag consisted of conventional glass silk. It undergoes a conversion process at thermal loads above the extreme temperature (approx. 650 ° C). which, after cooling back, causes brittle glass silk. These known structures of glass silk can already break into fragments even when heated once, due to their latent transformation temperature. In this connection, the optics of the heat-insulating component suffer particularly greatly. that after a short period of use the thermal insulation breaks down. the user judges this as poor material quality.

In the process of transforming the glass silk structure, in addition to the embrittlement, the thermal and physical properties of the material undergo an undesirable change. In particular, the conventional glass silk structures of conventional glass considerably lose their original function, i.e., the lining and, inter alia, the stabilization of the thermal insulation, even after the single-light glaze of heating and cooling.

It is known. According to the invention, the glass is resistant to high temperatures, for example quartz glass, practically insensitive to rotation

temperature in thermal extent relationship the on the heat insulation. Quartz s iklo .'je very much expensive and has low mechanical loadability. The essence of the invention The object of the invention therefore It is to provide structure glass

silk of the initially mentioned kind, obtainable at a limited cost. which has higher resistance to vCl loads in the operational use of thermal insulation components.

This object is achieved according to the invention. The structure of glass silk consists of at least two mechanically interconnected e.g. twisted. braided and / or interwoven fibers of which one is at high temperatures.

glass fiber of different material, glass fiber material resistant to ClCl as quartz glass, and the other is glass fiber material less resistant to ClCl temperature.

The process according to the invention is characterized by this. . that there are several individual fibers. of which at least one is high temperature resistant. twist or twist into a composite fiber. Alternatively, the individual high temperature resistant single fiber can be left straight and wrapped with a plurality of other conventional glass fibers.

Thus, in the glass silk structure of the present invention and in the production process, fibers of conventional glass silk are not abandoned; but extra. in particular, fewer quartz glass fibers bind to the silk structure. These quartz glass fibers form the backbone of a glass temperature-resistant glass silk structure. Mechanical connection of different fibers

-3glass silk results in the structure of the glass silk being held together after several heating processes and its appearance is substantially retained.

However, the structure of the glass silk remains within limits: since the bulk of the fibers consist of cheap ordinary glass and only a fraction of the fibers of glass silk form expensive quartz glass. In principle, the favorable properties of ordinary glass fibers determine the mechanical loadability. Thus, in the invention, the advantageous thermal properties of the quartz glass fibers are combined with the mechanically predominant properties of conventional glass fibers.

A preferred improvement of the invention is characterized by this. The structure of glass silk consists of spun fibers having a plurality of twisted or intertwined individual fibers of which at least one is resistant to high temperatures. With these spun fibers, glass silk structures can be produced in which the high temperature resistant glass silk fiber is automatically distributed uniformly throughout the cell. J Structure of glass silk through previous twisting or interweaving of different Individual fibers.

Another way of doing this is. that the spun fibers are a centrally extending central temperature resistant to high temperatures. which is surrounded by several individual fibers of ordinary glass.

A preferred embodiment of the invention is in the form of a woven structure. During weaving, the warp fiber of conventional glass silk is replaced with a warp fiber resistant to high temperatures at regular intervals. Thus, a glass silk structure is formed in which e.g. each n-th warp is resistant to high temperatures and between two adjacent warp threads. high resistant fibers

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tep Ľubám Lwžla several oon fibers from ordinary glass. Similar clamps are lowered for each mth block. the curved fiber is replaced by L with high temperature resistant silk. A special degree of stability will eventually be achieved. for example, each n-th warp fiber as well as 1 of each m-th weft fiber consists of high temperature glass silk. In this case, individual fibers or spun fibers can be used in the respective warp and weft fiber patterns.

Further advantageous details will be apparent from the following description of the two exemplary embodiments shown in the drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

The attached images show '' í '.; Kwa ·

Fig. 1A Fig. 1B Fig. 2A Fig. 2B

schematic side view of a twisted spun fiber with a central filament glass fiber: enlarged cross-sectional view along section line I-I of Figure 1A:

Structural diagram of a woven glass silk structure according to an exemplary embodiment of the invention: and a sectional view along section line II-II of Figure 2A.

An example of an embodiment of the invention

The stranded fiber 1 schematically shown in FIG. 1 consists of a central quartz glass fiber 11 as 1 outer glass fibers 22 a

1 ^. that surround it.

Of the outer glass fibers, only one is made of quartz glass. while the other Six 13 consists of cheap ordinary glass.

In alternative embodiments, only one of the fibers of the fiber skeins is made of quartz glass or another glass material resistant to high temperatures, or is one or more. multiple fibers twisted or interwoven with ordinary glass fibers according to

I

-5r fixed i.:h uztiruu. For economic reasons (material cost) bv, the use of quartz glass fibers should have been minimized.

(Jbr. 2 shows an exemplary embodiment of a glass music structure in the form of a fabric 2 · In this fabric, four weft yarns of regular glass 21 are alternately arranged with weft fiber 22 of quartz glass as well as four warp yarns 2Π of conventional glass alternating with oen fiber. The individual warp and / or weft fibers may, in an alternative embodiment, consist of spun fibers in accordance with the embodiment of Fig. 1A, and then the relatively coarse warp or weft fibers 22 and 24 shown in the drawing of Figs. 2, which are arranged between the individual fibers 21 and 23 of ordinary glass, even in the embodiment according to FIG. 2, the principle is that, in order to reduce the cost of production, the use of high temperature resistant silk glass material, e.g. will be limited to such an inverter that is absolutely necessary for creation frameworks for cohesion.

For the course of warp and weft fibers or the formation of a fabric or mesh structure, the invention does not impose any limitations as with conventional glass silk structures of conventional glass.

As shown in FIG. 2B. a section along section line II-II in FIG. 2A. The fabric is a bag-like structure with a front wall and a rear wall which, in use, surround at least one heat-insulating component. On the other hand, the woven structure of FIG. 2B can also be used as a multi-layer structure. the number of layers is not limited.

When the individual fibers 21 and 23 consisting of ordinary glass break completely or partially after one or more heating cycles. hold the weft against the warp threads 22 and 24

-6-high temperature, the cellular woven structure together in a skeletal manner and cared for it. so that the heat-insulating component remains lined. Without these refractory quartz glass reinforcing fibers 22 and 24, the entire lining would be released from the protective thermal insulation.

Many variations are possible within the spirit of the invention. Thus, the principle of the invention, i. alternatively the use of conventional glass fibers and quartz glass fibers may also be used in other insulating glass components, for example in monolayer wall structures such as mats or thermal insulation boards as a glued edge protection strip that protects the cutting edges or the like.

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Claims (9)

L. A glass silk structure characterized by this. The method according to claim 1, characterized in that it consists of at least two mechanically interconnected glass silk fibers (C11 ... 13) 21 ... 24) of a different material, one of which is a glass material resistant to high temperatures. such as quartz glass and the other is a glass material of less temperature resistant to silk. The glass silk structure according to claim 1 for at least a clastic lining of the heat insulating component. featuring. It consists of spun fibers C1). which have several twisted or intertwined Individual fibers C11 ... 13). of which at least one is resistant to high temperature inCl. The glass silk structure of claim 1 or 2. It consists of spun fibers C1). having a centrally extending central fiber (C11). high temperature resistant, surrounded by a plurality of conventional glass fibers (C13). The glass silk structure according to any one of claims 1 to 3, in the form of a woven structure C2). characterized by. that the warp threads are provided in a regular pattern in which the warp threads (24) are alternately arranged to be resistant to high temperatures with at least one. preferably a plurality of conventional glass warp fibers (C23). The glass silk structure according to any one of claims 1 to 4, in the form of a woven structure (C 2). featuring this. that the weft fibers are planned in a true-division pattern. in which the high temperature resistant weft fibers (C22) are alternately arranged with at least one. preferably a plurality of conventional glass weft fibers 21). 6. A process for the production of a glass silk structure according to any one of claims 1 to 5, characterized by this. This means that several individual fibers (C11 ... 13). of which at least one is high temperature resistant, twisted or twisted into a single coiled fiber (C1). Method for producing a glass silk structure according to any one of claims 1 to 5, characterized in that it is as follows. This means that the individual fiber C11). High temperature resistant. . it is held straight and wound with several other individual fibers C13) of ordinary glass. A process according to claim 6 or 7, characterized in that. The process according to claim 1, characterized in that each n-th warp thread C 2 ') consists of high temperature-resistant glass and at least one, preferably more, regular warp threads are wound between two adjacent threads C23). Method according to one of Claims 6 to 8, characterized in that. 2. The method according to claim 1, characterized in that the m-th weft yarn (22) consists of high temperature-resistant glass and at least one, preferably a plurality of weft yarn (21) of ordinary glass is wound between two adjacent weft yarns. 'I s: JTM- 9V Fig. 1A | and 2