NO127204B - - Google Patents

Description

Abrasion-resistant agent.

Midler son z5 word tape, rope, liner op net sorr when used are exposed to a strong feeling of wear and tear;; oe; f riks jonsprknennin;; becomes damaged or unusable after a short period of use. They should then be decommissioned and replaced as their continued use entails danger. It therefore consisted of the technical task 3 to develop needles that have considerably less frictional wear so that the duration of their usability is substantially extended.

It is true, according to Swiss patent no. 20,918, that it is known to equip textile materials made of polyaniide with a coating of an oxidized polyethylene wax. of the tearing force compared to an untreated rope.

In DAS 1.175-525', it is further proposed to impregnate fiber ropes with a silicone rubber or with organic polysulphides, neoprene, butyl rubber or latex, so that only a continuous strip-shaped area of the outside of each strand is impregnated to a certain depth. One: unsolvable. connection of the impregnating agent with the rope string, which is the main prerequisite for a reduction in frictional wear, is thereby achieved, only when impregnating agent uses a vulcanizable material. The additional vulcanization process is carried out after penetration of the impregnating agent into the rope strand per the fibers themselves.

According to the invention, it is possible, after group stress, as discussed below in connection with the table, to achieve an approximately 5 times higher tearing force compared to the other similar methods.

The impregnation method according to the invention requires no vulcanization. It is therefore surprising in relation to the above-mentioned patents that according to the invention it is achieved without any vulcanis after scrubbing stress on the girdle band.

300% higher tearing force than an untreated connecting belt has under the same conditions. - This leap-wise improvement in friction wear could not be predicted and was surprising.

The invention relates to an agent made up of polyamide material and is characterized by the fact that a mixed polymer of butadiene, acrylonitrile, styrene and rnethacrylic acid is embedded in cavities located in the interior and at the same time coats the surface, the weight ratio of mixed polymer referred to polyamide material being 15 - 30 'weight-S .

To produce the agent according to the invention, it is impregnated by immersion, e.g. a belt consisting of polyamiu 66 weave layers in a trough in which there is approx. 15% rnetacrylic acid as it is available under the trademark "Perbunan-SM-Latex 15 M" (manufacturer: Farbenfabriken Bayer AG, Leverkusen). The thus treated webbing is taken vertically out of the trough to allow excess dispersion to drain off, and is treated thermally for 5 - 15 minutes at 110 - 130°C. It contains. 18 r 20 weight ft referred to the polyamide material of the unreacted mixed polymer which is also embedded in cavities located in the interior of the girdle band which also covers . its surface. The webbing produced in this way was with an untreated earth bond of the same structure exposed to a scrubbing stress. The investigation was carried out in such a way that both belts were pressed with the same force against a rotating rough concrete roller, the corresponding wear being removed by immersing the friction roller in water.

The used for the investigation and on fig. The test apparatus shown in 1 works in the following way: A concrete roller W which, by means of a drive A per minute makes 30 revolutions and with a circumference of 1 meter is wrapped around the material P to be examined at an angle of 120°. The specimen is held on one side at the attachment point B" and loaded on the free-hanging side with a weight G of 8 kp. Each specimen was scrubbed on both sides with 500 roller revolutions each time. The corresponding wear was removed in the water-filled dipping tubs T." The wear that occurred during the examination was primarily assessed visually and then the specimen was examined for tensile strength.

As can be seen from a list of the measurement values, the belt according to the invention has, after the scrub application, an approximately five times higher tear force than the comparison belt. ■ v. By . in addition to the scrub resistance, the tear resistance of the loops present on both belts also increases.

After the examination, the comparison belt was severely damaged at the scrub site. On the webbing according to the invention, after the same strain, only a small change was visible and there would be no qualms about using this further.

A considerable increase in the friction resistance of

the claimed means is due to the fact that this is not only the surface, but is fixed throughout by a layer of mixed polymer. For this reason, the resistance to wear is not only limited to the surface, but is effectively completely through to complete wear. I-n resolution in enke ltkapi Harer as the property was not 1 unr.gf" ve5 friks jonsp.rkj zoning at do earlier structures cannot therefore irintro.

The desired coloring of the worn-out needle can be easily achieved during the usual intensive treatment. ee. mixed r-olynrisatdisfsersjor.e<n> as in this one stirs in pigi.;enl dyes, for example "7,'elio P-eciit-Peinteire"

(producer: Farter.fabriken Layer AG, Leverkusen), in a to .the desired far^e effect corresponding to the r.ienfcde.

Claims (1)

Constructed of polyanihydr.aterial wear-resistant medium-soir. rope and rope, characterized in that a mixed polymer of butadiene, acrylonitrile, styrene and neoethacrylic acid is embedded in the holes so located in their interior and gradually coats the surface as the weight ratio of mixed poly the hierisate referred to polyamicii:.aterialst amounts to'15 - 3C weight?!.