SU1024493A1 - Sealing melt - Google Patents

Description

The invention relates to the production of constructionally sealed metal construction materials based on synthetic rubber, for joining building structures of various materials (concrete, glass, metal, plastics, wood), for the elimination of joints between slabs in road construction, for building and repairing waterproofing materials. coatings. Known sealing mastic includes, wt.%: Ethylene-propylene rubber 5-12, butyl rubber 1-4, mineral MaCjjio, 5-17, bitumen 30-50 and pimaric acid 2-4 tl. Mastic does not have sufficient mechanical properties. An imitation sealant composition, including aarad, wt.%: Synthetic rubber or a mixture of rubbers 4-5; mineral oil 10-25, epoxy resin 0.25-2.5; liquid glass - 0.25 2b; mineral filler is ODtal. . The sealant retains its plastic properties in the temperature range from 50 to 2. The disadvantages include low heat resistance (At 7CPc, the mastic loses elasticity and begins to flow as well as low strength (up to 0.6 kgf / cm. The closest to the technical essence and The result of the invention is a melt sealant, including butyl rubber or a mixture of ethylene propylene rubber, polyisobutylene, alkyl phenol maldehyde resin, plasticizer, vulcanizing agent - ZHp oxide, Ac oxide, etc., inert filler, inert filler. rmetik does not have sufficient physicomechanical properties and: heat resistance, elasticity, water resistance. The purpose of the invention is to increase heat resistance, elasticity and water resistance. The goal is achieved by the fact that a melt sealant comprising c-and tetic rubber, alkylphenol formaldehyde resin, plasticizer , a filler and a vulcanizing agent, contains butyl rubber or a mixture of it with polyisobutylene, ethylene-propylene or isoprene rubber as a synthetic rubber, and as a plasticizer is a mineral This oil, as a vulcanizing agent, is an oxide or a metal hydroxide of group II or III group, and additionally a low molecular weight carboxyl-containing butadium hydroxide or butadiene nitrile rubber and bitumen or polyethylene wax or cefesin, in the following ratio of components, wt%: ethylene-propylene or isoprene rubber5-25 Low molecular weight carboxyl-containing butadiene or butadiene nitrile rubber 5-25 Bitumen or polyethylene wax or ceresin 3-25 Mineral oil 2-8 Alkylphene 1-7 lforflaldegidna resin oxide or metal hydroxide or P 1st group 11-5 Filler When administered rest of said ko lponentov occurs in the partial cross-linking of rubbers of high molecular weight phenolic resins. Low molecular weight carboxyl containing rubbers are vulcanized by salt, sv, oxides, or metal hydroxides. When the sealant is heated, the salt bonds are destroyed, the material becomes less rigid, which allows it to be applied using a sealant. After applying the sealing composition, the salt bonds are restored and the material is vulcanized again. . For the manufacture of a compound, all types of butyl rubber as well as its mixture with ethylene-propylene (SKEPT-40, SKEPT-BO}, isoprene (SKI-3) rubber, and polyisobutylene p-2o can be used as the polymer base; bitumen and ceresin, polyethylene wax with softening point 5090 is used as a mortar. Mineral oil is introduced into the composition as a plasticizer. Oil of polymeric plastic with a freezing point of not higher and flash point not lower than industrial oil of the I-50A brand can be used as oil Stamps avtol AC-10. Alkilfenolfor 1aldegidna resin slugsht simultaneously hemming agent for butyl rubber and high molecular weight rubbers and as an additive, povinakicha adhesion. The resin can be used based on the I-tert-butylphenol (Fenofor B and resin -fOi) as alkilfenolformaldegidnoy resin and h-ibc-octylphenol (Phenofor 0) base. Polyvalent metal oxide or hydroxide is used as an agent for the fractional vulcanization of carboxyl-releasing rubbers and, additionally, as a vulcanization accelerator with phenolic salols. The fillers of the compilation are chalk, soot / kaolin, bleaching clay, pew crumb. To obtain a sealant composition, crushed Outilka and bitumen (or wax) are fed into the rubber mixture, then 2/3 filaments are introduced in parts, the mass is processed for 10-15 minutes, at 76-80 ° C, the mixture is added to the mixture ethylene rubber, phenolic resin and or metal hydroxide in the mixture with the remaining filler, the mixture is mixed for another 10-15 minutes to a semi-uniform mass. Compositions of pre-paste mastic, wt.%: Represented by Mastic niooeats using a sealer, before applying it must be heated to 80-90 G. Example 1 1. Butyl rubber 20 Low molecular weight butadiene nitrile rubber with carboxyl groups 15 Bitum15 Petroleum oil plasticizer Polymerplast Resin Fenofor B Hydroxide Sa Filler and chalk soot P r and measures 2 Vutil rubber Low carboxylate carboxylate - butadiene rubber Bitumen Industrial oil I-50 A SmOl-101 Oxide Ti Filler kaolin soot P c and me p 3 Cure Cure Cure Cure M-Cure Cure-101 O-O-oxide O-Filament O-C Bitumen .25 Bottom komolekul molecular weight butadiene rubber having carboxyl gruppami5 The petroleum oil plasticizer Noe limerplast Poi 2 O 7 Resin Fenofor oxide refilling crumb rubber 35 10 Example 4 Isoprene Butyl kauchuk5 Bottom komolekul molecular weight carboxylated butadiene rubber Polyethylene wax 15 10 Industrial oil I-40A 5 resin Fenofor Bytes 4 Hydroxide A 3 Filler - spent bleaching clay (gumbrin) 48 EXAMPLE 5 Butyl rubber. 5 Ethylene propylene rubber 10 Low molecular weight butadiene nitrile rubber with carboxyl containing groups 10 Ceresin 20 Avtol AC-10 5 Resin Fenofor O 4 Calcium hydroxide 3 Filling material known to Table 43 Table .1

Ethylene propylene rubber

Resin Phenofor O

15 5

ten

four

10244936

Tensile strength kgf / st

Relative lengthening at the maximum load,%

Breaking pattern

Heat resistance, C Relative elongation at maximum load,% Nature of the fracture Adhesion at break Heat resistance C 100 not lower Water Absorption, May.% 0.31

Continued table. one

0.9

1D

0.8

41

46

35th smiled 10090 0,40,22

710244938

Comparative properties of hermetic structures, which is characterized by

are presented in Table 2,. The hedgeion character of the break.

As follows from Table 2, the proposed sealant has a high. The proposed sealant can be heat resistance, water resistance, elas- used to seal joints with physicality.5 of building structures, for filling. At the same time, the sealant keeps the joints between the slabs in auto-adhesion to the construction cone. construction.

Claims (1)

GERMETIC-MELT, including synthetic rubber, alkylphenol-formaldehyde resin, plasticizer, filler and curing agent, is tlled in that, in order to increase heat resistance, elasticity and water resistance, it contains butyl rubber or a mixture of it with polyisobutene as synthetic rubber ethylene-propylene or isoprene rubber, as a plasticizer - mineral oil, as a vulcanizing agent. agent - metal oxide or hydroxide of metal ·· la ± 1 or group III and additionally low molecular weight carboxyl-containing butadiene or butadiene nitrile rubber and bitumen or polyethylene wax or ceresin with a curing ratio of components, May.%: Butyl rubber or a mixture thereof with polyeobutylene ethylene propylene or isoprene rubber 5-25 The low molecular weight carboxyl si lso holding a tadiene or buta b diene neither triline rubber Bitumen or polyethylene 5-25 | cl wax or ceresin 3-25 from: Mineral oil 2-8 AIKylphenolformal. 1 dehydrated resin 1-7 ΰ e Oxide or Hydroxide I metals II or III groups 1-5 1 Filler The rest is g * new ABOUT Yu 4> 5-25