RU1798348C - Method of polymeric material production - Google Patents

Abstract

Usage: for the manufacture of products, mainly toys and haberdashery, by stamping, blowing or vacuum molding. The inventive nitrocellulose pre-dehydrated with alcohol is mixed with trichloropropyl phosphate in a weight ratio of 1: 1.9-2.0, respectively, magnesium sulfate, hydrate taken in an amount of 2-12% by weight of a mixture of nitrocellulose and trichloropropyl phosphate in the form of a saturated aqueous solution, and targeted supplements. The mixture is gelled at 60-70 ° C, 1.5-2.0 hours. 2 tablets. ate with

Description

 : The invention relates to the production of low-combustible polymeric materials based on cellulose nitrate and can be used for the manufacture of articles, mainly toys and haberdashery, by stamping, blowing or vacuum molding.

The aim of the invention is to increase the deformation-strength properties of a material while reducing its combustibility. .

This goal is achieved by mixing pre-dehydrated, alcohol nitrocellulose, a halogen-containing phosphoric acid ester,

inorganic magnesium salt and target additives, and gelatinization of the mixture at 60-70 ° C for 1.5-2.0 hours, moreover, trichloropropyl phosphate is used as the halide-containing ester of phosphoric acid at a weight ratio of nitrocellulose: trichloropropyl phosphate 1: 1 , 9-2.0, as an inorganic salt, magnesium is magnesium sulfate hydrate MgSO r7H20 in an amount of 2-12% by weight of a mixture of nitrocellulose and trichloropropyl phosphate, in the form of a saturated aqueous solution,

A composition consisting of nitrocellulose, trichloropropyl phosphate in a ratio of 1: 1.9-2.0 and target additives

h

sO 00

s

Јk 00

manufactured according to TU No. 6-06-96-89 and has the trademark Colforten.

Example 1. The composition is made according to the following mode: nitrocellulose (GOST 7414-81) is dehydrated with alcohol to an alcohol content of 25 wt.%, Water - 5 wt.%; 2.936 kg (65.9 wt.%) nitrocellulose are infused into a mixer heated to; include a mixer; pour 1.1 L of alcohol; and mix the mixture for 1 hour; with the mixer running, pour 200 ml of a saturated solution of MgSO j 7H20. The amount of solution is calculated so that the content of MgS04 -7H20 (GOST 4523-77) is 12 wt.% In the composition, the additive is reduced in three doses within 10 minutes after the addition of the additive. Also, 1.468 is poured into the working mixer. kg (May 32.9%) of trichloropropyl phosphate (TU6-06-12-106-86) 0.040 kg (0.9% by weight of castor oil, 0.013 kg (0; 3% by weight) of TY2 and 0.040 kg are added (0.9 wt.%) Dye.The total mass mixing time is 1.5 hours; after mixing, the composition is filtered in a Wüller press; the mass is rolled on horizontal rollers for 2 hours to achieve an alcohol content of up to 15 wt.% compaction and homogenization, and on small horizontal rollers, they are rolled into plates to the size of the chamber of the block press; the block is cooked in the block press for 4 hours at T 80 ° C; deposition, gouging , -Prov Lebanon, drying, etc. straightening is carried out in accordance with the regulations.

The composition obtained according to the invention using magnesium sulfate hydrate is registered under the trade name Colforten-M and is manufactured according to TU6-06-96-89,

In the table. Figure 1 shows the dependence of the burning rate and deformation strength of the composition of nitrocellulose: trichloropropyl phosphate () on the MgS04x content

x7H2O.

Table 2 shows examples of formulations in accordance with the invention (examples 2, 3), control (examples 4, 5, 6) different conditions for the introduction of sulfate

magnesium hydrate and a known composition for comparison (Example 7), as well as test results.

Claims (1)

SUMMARY OF THE INVENTION A method for producing a polymeric material by mixing preliminarily anhydrous nitrocellulose, a halide-containing phosphoric acid ester, an inorganic magnesium salt, and target additives and gelation mixtures at 60-70 ° C for 1.5-2.0 h, about tl and h a-s and with the fact that, in order to increase the deformation-strength properties of the material while reducing its combustibility, trichloropropyl phosphate is used as a halogen-containing phosphoric acid ester with a mass ratio of nitrocellulose: trichloropropyl phosphate 1: 1.9-2.0; as an inorganic salt of magnesium, magnesium sulfate hydrate the amount of 2-12% by weight of a mixture of nitrocellulose and trichloropropyl phosphate in the form of a saturated aqueous solution. Table 1 . Table 2 Effect of the ratio of components and the method of introducing MgS04 7H20 on the combustibility and physicomechanical properties of the compositions  The combustibility of the material was determined by the flame propagation method according to GOST 13088-71 Plastics. Flammability determination methods.