SU981327A1 - Polymeric molding composition - Google Patents

Description

(54) POLYMERIC PRESS POSITION

Ieoberetenve is related to the production of a presonic compository based on phenoformals of a dehydrated novolac resin and can be used to make loaded reinforced and non-reinforced general technical objects, as well as in consumer goods. Polymer preso composites are known, including novolac phenol-formaldehyde resin, wood flour, hexametlcentetramine,, stearin, dye shproziv and unsupported peat current. The well-known presso-composition and area does not give a sufficiently high and fuzzy-mechanical peel characteristics. Closest to the invention to the technical essence and the achieved result is a polymer pre-composition, including phenol-formaldehyde novolac resin, wood flour, hardener, calcium sulphate, calella stearate and mummy C 2 j. The press arrangement also does not possess sufficiently high physicomechanical properties. The purpose of the invention is to improve the physical and mechanical properties of the polymer press composition. The goal is achieved by the fact that polymeric precoat (an exposition, in particular, tea, phenol-formaldehyde, and curestones, resin, wood flour, hardener, oxides of calysus, lime stearate and mummy, contains HUMs of hexamethylenetetramine, a product of mutual humic acids, as a hardener, containing the humates hexamethylenetetramine, which is a product of humic substances that contains cumulant, hexamethylenetetramine humates, which are a product of humic substances that contain hexamethylenetetramine humates, which are a product of humic substances that contain hexamethylenetetramine humates, which are a product of humic substances that contain hexamethylenetetramine humates, which are a product of humic substances and a humidifier that contains hexamethylenetetramine humates — a product of humic substances — a product of mutual humic substances; : 3, with the following ratio of components, may. H .: Novolacna fable- formaldehyde resin 42.5-42.9 Wood flour 43.4-43.7 Humates hexylentetramine 7, 4-8.2 Orsis of calys 0.8- 1.0

Calcium citrate O ,, 8

Moomin 4.3-4.4

The technology for the preparation of pre-composition is similar to the technology of production and the & work of pre-composite based on euroloreldegt novolac resins.

In tab. 1 shows recipes presokompozioi. In the compositions, guaropacific viscosity is used on samples without a notch, KJ / m 7.7 Flexural stress at bending, MPa84.4 Martens heat resistance, in С156 Fluidity, mm132 Shrinkage,% 0.74 Specific surface electrical resistance. Ohm Electric strength, mV / m14.5

F op mula ieob e n i

Polymer press composition, including non-volatile phenol-formaldehyde resin, wood flour, hardener, kalysh oxide, calcium stearate and mummy, is about 5 months since, in order to improve the physicomechanical properties, as a hardener, hesitant chymetsytets were applied as a hardener, and the temets were applied. It is up to a fraction of not more than 0.25 mm.

In tab. 2 shows the properties of pschgv dimensional pre-composition. As can be seen from the tabr. 2, replacing letotramine hexamethytetramine with humates, allows an increase in impact strength by an average of 40% and a tensile strength in static bending by 28%.

Table

Table 2 7.7 81.9 0.71 1.45 - ib 1-1 15.2

qi contains humates hexamethyl tetramine, a product of the interaction of humic acids and hexamethylenetetra-. amine at a molar ratio. 1: 3 and the following ratio of components, das1ch .:

Novolacna phenol formaldehyde resin 42.5-42.9

Wood flour 43.4-43.7 7.6 81.4 0.61 2.76-id 1. id 14,3

5 9813276

Humates gvsametvleV1. Copyright svtvg & Psgvo USSR

tetramine .7,., 2№ 38О675, cl. C O8 L 61/10,

OKS 0.8-1.01970. Kalyt stearate 0.6 "4), 8

Moomin 4.3-4.45 2. Nikolaev A.F. Tekhnologii ppastvches.

Sources of information, kih masses. L, Himi, 1977, s, 185

taken into account during the examination (prototype).

Claims (1)

Claim A polymer press composition, including phenol-formaldehyde resin, wood flour, hardener, calcium oxide, calcium stearate and mummy, characterized in that, in order to improve physicomechanical properties, the preso composition contains humets of hexamethylenetetramine as a hardener - an interaction product humic acids and hexamethylenetetramine in a molar ratio of 1: 3 and the following ratio of components, ⁵⁵ parts by weight: Novolac phenol-formaldehyde resin 42.5-42.9 Wood flour 43.4-43.7 Humates of hexamethylenetetramine Calcium Oxides Calcium stearate Mummy .7.4-8.2 0.8-1.0 0.6-0.8 4.3-4.4