DD298515A5 - PLASTIC STORAGE SEAL (PE-KITT I) - Google Patents

Abstract

The invention relates to a plastically lasting lute. The aim and object of the invention is to propose a luting with improved performance properties. According to the invention, the sealant consists of 10 to 30 parts by weight of a low molecular weight polyethylene having an oily consistency, 1 to 6 parts by weight of mineral fibers, 25 to 40 parts by weight of a light metal suitable for achieving low flammability and 24 to 64 parts by weight of a mineral filler. Sealing, kitten; Sealant, seal; plastic putty, caulk}

Description

Field of application of the invention

The invention relates to a sealant, which is used in particular for shipbuilding for sealing cable ducts, in electrical engineering for preventing the ingress of moisture in installations and in the DIY sector for sealing.

Characteristic of the known state of the art

So far, especially in shipbuilding, as auxiliary material for the temporary sealing of cable ducts, a plastically resistant surface sealing compound based on mineral oil is used.

In electrical engineering, the traditional plastic "Gurokitt" is used to protect against the effects of moisture and condensation, which also contains mineral oil as a binder.

These plastic gaskets, built from mineral oil in combination with petroleum distillation residues and inorganic mineral fillers and fibers no longer fully meet the requirements of the practice. The known defects are:

Short-term resistance to water and seawater, fluctuating quality in the adhesion, poor dimensional stability at elevated temperature or exposure to vibrations, which leads to leaks due to leakage of the sealant from the joint, lack of transport stability, severe workability at low temperatures, the contamination of the hands by staining during processing.

Other known sealants, other than those mentioned on a mineral oil basis, include the silicone rubber thioplast sealants and those based on synthetic rubber. Such sealants are once again for reasons of material economy, on the other by the fact that they cure, not easily removable and not flame retardant, for such use cases not for such volume-intensive Abdichtfälle especially in shipbuilding in application.

It was also a disadvantage that usually for each specific application, for example in shipbuilding or in electrical engineering, a special sealant was developed and used.

Object of the invention

The aim of the invention is to propose a plastically lasting lute, which does not have the disadvantages of known Dichtungskitte, beyond the applicable universally for as many applications and user friend ¹ : hi Jt. The lute should continue to have a high material economy and without special security measures such they are required, for example, for toxins, solvents or asbestos-containing Dichtungskitte be processed.

-2- 298 Explanation of the nature of the invention

The invention has for its object to provide a plastically lasting lute with improved performance properties, which is resistant to water over long term, especially seawater, which has a constant high quality in terms of adhesion, even at elevated temperature and exposure to vibrations, the difficult is flammable, has a high transport stability and is easy to process even at low temperatures. This object is achieved by a plastically lasting sealing putty according to the invention from 10 to 30 mass of a low molecular weight polyethylene oily consistency 1 to β Massetellen asbestos mineral fibers 25 to 40 parts by weight of a suitable for achieving the low flammability light metal hydroxide and

24 to 64 parts by weight of a mineral filler.

It is advantageous to use aluminum silicate fibers in ground or unground form as asbestos-free mineral fibers.

Also, the use of loose mineral wool fibers as asbestos-free mineral fibers showed good J results.

As light metal hydroxides suitable for achieving heavy damability, aluminum or magnesium hydroxide have proven to be very suitable.

The mineral filler are calcium carbonate, white kaolin or advantageously mixtures of calcium carbonate and white kaolin suitable, wherein the mixing ratio of both components is preferably 4: 1.

However, it is also possible to use, for example, titanium dioxide, barium sulfate, zinc oxide, zinc sulfide or lithopone.

However, some of these substances are less cost effective than those mentioned earlier. If not necessarily a light color of the sealant is required, slate flour can be used as filler.

The proposed sealant has compared to similar kittens much higher performance characteristics. It is resistant to water over a long period of time, in particular seawater, and has a consistently high quality in terms of adhesion, even when exposed to elevated temperatures or vibrations. It can be processed well, even at low temperatures, without any special safety precautions. It is flame-retardant and remains plastic, even when used outdoors, with a uniformly closed surface. The proposed luting is user-friendly (no contamination of the hands) and extremely material-economical. Due to its light color, the putty can be colored according to the respective application in any color.

The production technology of the sealant is the same as in known sealing kits: presentation of the molten low molecular weight polyethylene mixture, entering the other ingredients with intensive kneading.

With the use of the obtained in polyethylene synthesis low molecular weight polyethylene mixture ointment-like consistency in the present sealant, this product, for which there were only limited applications, opened up an economically interesting new use.

Due to its undefined qualitative and quantitative composition, low molecular weight polyethylene blends have hitherto been used only as a combustion additive in terms of energy, but not in terms of material economy.

embodiment

The invention will be explained in more detail below with reference to two embodiments.

1st example

25 parts by weight low molecular weight polyethylene mixture ointment-like consistency β parts aluminum silicate fibers

40 parts by weight of aluminum hydrate. M

29 parts by weight of whiting / kaolin mixture in the ratio 4: 1

This sealant is of relatively soft consistency, bright and due to its high content of aluminum hydroxide schver flammable. He is mainly used in shipbuilding.

2nd example

30 parts by weight of low molecular weight polyethylene mixture of oily consistency 4% by mass of mineral wool fibers

31 parts by weight magnesium hydroxide

35 parts by weight of a mixture of whiting and kaolin in a ratio of 3: 1 This sealant was additionally blackened with 0.02 parts by weight of carbon black and is used especially in electrical engineering.

Claims (7)

1. A plastic sealant, characterized in that it 10 to 30 parts by weight of low-molecular-weight polyethylene of ointment-like consistency, 1 to 6 parts by weight of asbestos-free mineral fibers, 25 to 40 parts by weight of a light-metal hydroxide suitable for achieving low-flammability and 24 to 64 parts by weight of a mineral filler
consists. 2. plastically lasting lute according to claim 1, characterized in that the luting contains asbestos-free mineral fibers Aluminiumsii dtfasern in ground or unground form. 3. plastically lasting lute according to claim 1, characterized in that it contains loose mineral wool fibers as asbestos-free mineral fibers. 4. Plastic sealant according to claim 1, characterized in that aluminum hydroxide is used as a suitable light metal hydroxide. 5. plastically lasting lute according to claim 1, characterized in that magnesium hydroxide is used as a suitable light metal hydroxide. 6. plastically lasting sealant according to claim 1, characterized in that a mixture of calcium carbonate and white kaolin is used as a mineral filler. 7. Plastic sealant according to claim 1 and 6, characterized in that the mineral filler mixture of calcium carbonate and kaolin in the ratio 4: 1 is mixed.