SU615105A1 - Composition for obtaining foam plastics - Google Patents

Description

The invention is flammable to composites; C} I of producing foams based on phenopne-formaldehyde resins of polyester resin used as geothermal materials in construction, an example in building envelopes, thermal nets.

A known composition for the preparation of a foam, including phenol-formaldehyde resin, resole-type resin, acidic carbon; JQ rshzator, mineral filler (alumina ton), neutralizing. agent (alk) ksnieva powder and alum-chro-phosphate binder.

The disadvantages of this composition are - 15 r high temperature () and. The duration of the processing process (more than 2 hours), and the foam obtained on its basis. It has low physicomechanical indices and an insufficiently high working temperature (up to 1.50 ° С).

Closest to the invention to the technical essence is a known composition for the preparation of a foam, including a phenol-formaldehyde resin of polyethylene.

ash type, acid catalyst, neutron aggregate (aluminum powder), mineral material bn; (50% of a bitumen emulsion with pH and mineral filler (ash, mineral oxide);

; Although this composition is smaller; : temperature (EOU) n time (30 min) of processing, but still these figures are still quite high, which limits the scope of use of this composition. In addition, the foam in its Bnov also has insufficiently high physical and mechanical properties and the working temperature of the foam is still

150 C.

The aim of the invention is to reduce

temperature and time of processing of the composition and increase of physico-mechanical parameters of the final product (foamed laminate based on it).

This goal is achieved in that, as a mineral filler, the composition contains a powdered filler selected from the group consisting of schungisite.

haydite in Evartsevny sand, and additionally contains the orgofosphrrinoglossus and this ethiophyderoxipoxane fluid at, b eating the ratio of the components, b.

Feiap ormapdegidna.

p peaonbHJxro type; lOO

kHCAbifl catalyst 2O-ZO

Neutralizing agent, 1-O, 3

Intrauminal materta 1,5-2,5

Minvral NaaolnitepO-90 th

Phosphoric acid4-8

Popiet pgidrosshizhsanovad.

Liquid, 0.75-1.5

As a layer of catalyst in. Compoencin is used the product of covdenn-tsaci sulfophenyl urea with formaldehyde and artophosphon {H1M1 acid (VAH-3)

As a neutralizing agent, aluminum powder, aluminum oxide, potassium or sodium oxide, magnesium oxide.

As a bituminous material bitumen varnish (solution of bitumen in white spirit and gasoline).

A filler to 4 positions and the formation of a laser on its basis is carried out by 25 followers. image (),.

Pre-prepared bituminous varnish. The mixer from the boiler flows by gravity from: melted and dried bitumen, with constant stirring with EO. 30 White alcohol (or gasoline) is introduced into it, the varnish is mixed for minutes,

All the separated components are introduced into the turbulent mixer at the same time, at the temperature of the room: 1-0-2OC 35 without preheating.,

The filler and the resin fenbl-formaldehyde (FRV-1A) are loaded directly into the mixer, WAG-3, bitumen varnish, polyethylsiloxane liquid (GKZh94} f and neutralized phosphoric acid - through an intermediate tank. Mixing is continued for 0.5 min.

The dose of orthophosphoric acid required for the kneading is neutralized during the mixing and unloading of the components in the mixer for 1 minute,

The composition is poured into the preprocessing form, the cone is fed to the conveyor i (in this case, to the discharge opening, a nozzle-dispenser is connected to the ampoule) of the composition.

The mold is closed and held for 8-10 minutes, after which the finished foam is removed from the mold, the curing conveyor lasts 8-100 minutes, the drying process is continuous,

In the examples, compositions are prepared and foam is prepared as described above. The dosing of components and the discharge from the mixer using a conveyor technology for obtaining foam plastic are carried out continuously. in a great way. Working temperature i25O С, thermal conductivity coefficient 0,, О45 kcal / metat ° С.

The compositions of Examples l-9i 1O-18 and 1 & -29 are given in Table 2, respectively. 1, 3, 5 ..;

The properties of the resulting foams are shown respectively in Table. 2,4,6.

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& § Thus, the proposed composition: there is no need to expose to heat during processing. The total processing time is about 20 minutes. The foam obtained on the basis of this composition has high physicists, and its working temperature is + 250 ° C. Formula i-isobreg e and Composition for the preparation of penshlast including phenol-formaldehyde resin of the resole type, acidic ke catalyst, Hefti the antimalizing agent bituminous material and mineral filler, which is intended to reduce the temperature and the processing time of the composition and increase ({shziko-mekhanicheskikh indicators of the final product, as a mineral filler, si contains powder filler, chosen from the group consisting of shungizite, expanded clay and quartz sand, and additionally confined sforic acid and polyethylsiloxane liquid with the following ratio of components, parts by weight; phenol-formaldehyde resin of rezol type 10O Acid catalyst 20-ZO Neutralizing agent.0.1-0.3 Bituminous material1.5-2.5 Mineral filler70-9O Orthophosphoric acid4- 8 Polyethylene coatings, 75-1 |, 5 Information sources, taken into consideration during the examination: 1. Author's certificate of the USSR / No. 349699, class C O8 3 9/06, 197О. 2, Author's children of the USSR M 423821, cl. C 08 T 9/06, 1972.