SU662649A1 - Anticorrosion paper coating composition - Google Patents

Description

1. The invention relates to a composition of anti-corrosion paper and is intended for use in a depressed paper industry. The known method of applying the inhibitor to the base paper, in which its solubility in water is of great importance. When working with poorly soluble and non-soluble inhibitors (they are chromate dipohexipamm, they do nitikpogbkoilaminom nitrite, diclohexylamine carbonate and others) applied to the surface of the paper, pick up a tie, apply carbon fiber, diclohexylamine carbonate and others. , stabilizers, plasticizers, concomitant fillers and surfactants l. Latexes, cellulose ethers (methigallic vine), polyvinyl alcohol, casein are used as a binder. The introduction of the inhibitors into the suspension of the CBSH inhibitor leads to a sig- nificant decrease in the effectiveness of the protective effect of the anti-corrosion paper on the fact that the inhibitor has saKpibiTbiMHral paper surface with a film of 9B1 {solids. A decrease in the amount of binding substances or iix replacement leads to the fact that the inhibitor separates from the paper surface, as well as to dusting it, which results in deterioration of the operating conditions of anti-corrosion (1-bend) packaging materials when packing metal products. A significant drawback is that the inhibitor rests on the surface of the base paper in a concentrated form, which creates conditions for its destruction during operation due to aging processes, as well as under conditions of elevated temperatures, which are unavoidable during transportation and storage of metal products. The local location of the inhibitor on the surface of the paper leads to its destruction upon wetting. These destruction of base paper with the disintegration of inhibitor salts, for example, chromate, cyclohexylamine, which is accompanied by the release of kyopotes. Chromium acid helps to quickly disintegrate the paper, which, with the hydrolysis of cellulose, thus creating conditions for breaking the tightness of the packaging and, as a result, you have packaged water from the packaging, the shortcomings can not be corrected simply by changing the quantitative ratios of the known ingredients. The purpose of the invention is to increase the environmental performance of the paper (by increasing the resistance e e to the effects of temperature and radiation). The supply chain is achieved by the fact that the proposed coating composition of the anti-corrosive paper, including the atmospheric corrosion inhibitor and, as a binder for methyl methyl EPLC, additionally contains microcrystalline 1 position, and the components are taken in the following ratio, wt%; . Corrosion Inhibitor 26-94 MeTyppiulosa4-5 Microcrystalline, Celgia Epoa2-67 The use of anticorrosive paper usually results in the cessation of their protective effect, often associated with the complete evaporation of the inhibitor from the paper, and unpacking the package, you can disconnect from the package, you will lose the flow of the inhibitor from the paper, and you will lose the flow of the pack, it will disappear from the package, you will lose the flow of the inhibitor from the paper; . {The destruction of the base paper is caused by the effects of natural aging, as well as by the thermal decomposition of the paper. As a result, these npoUeccoa acid salts are removed from the inhibitor salts. as a result, the hydropysis of a lucent material, which consists of paper, and its dissolution occurs. The behavior of an inhibitor of chro shppohexylamine is typical. Chromate of pvcpohexipamiv under the fusion of the natural aging of the heat treatment process splits to form cyclohexyl, volatilizing during the operation of the anticorrosive paper, and chromic acid, which accumulates in the base paper, leading to its hydrolysis and subsequent decomposition of the paper, which leads to its hydrolysis and the decomposition of the paper, which results in its hydrolysis and subsequent decomposition of the paper. Thus, anticorrosive paper loses its protective properties earlier than consumption of an inhibitor. The introduction of microcrystalline cellulose. Allows you to completely avoid this undesirable process. This is achieved by the fact that microscopic cellulose does not allow an inhibitor, for example chromate 1 (iclerxipa (willow), to be treated on the surface of the base paper. In the presence of microcrystalline cytosis ikbiby- on the surface of the paper, is located above the layer of the orbent, which has a high affinity to the paper. Thus, the inhibitor is prevented from contacting the base paper. The use of anticorrosive paper, in the assumed composition of the absorbent, is microcrystalline tseltpolozy, and not paper. This is due to the fact that between the base paper and the inhibitor microcrystalline cellulose lies, and on the other hand, microcrystalline 1 750 substances), which ensures complete absorption of chromic acid by it. It is this that eliminates the process of decomposition of the base paper. Moisture resistance is achieved due to the fact that the microcrystalline cellulose and eliminates contact of the inhibitor with the base paper. Moreover, during the decomposition of the inhibitor, microcristaptic cellulose does not occur due to its high crystallinity. The invention is illustrated by the following examples in which 1 g of kraft paper was closed with a suspension of inhibitor and then dried at 120, for example. The paper is coated with a suspension with a total concentration of .30%, containing,%: 20, a CCA inhibitor (cyclohexylamine chromate), 9 sorbents based on microcristaphyl cellulose and 1 binder (methylcellulose). The resulting coating contains,%: Corrosion Inhibitor69 Methylderau zaa Microcrystalline Cellulose 2 7 EXAMPLE 2 The paper is coated with a suspension with a total concentration of 30%, containing,%: 25 inhibitors of CCA, 14 sorbents and 1 binder. The resulting coating contains, in%: The inhibitor Urrozii53 Methyldelylupose .5 Microcrystalline cellulose 42 EXAMPLE 3. The paper is coated with a suspension with a total concentration of 30%, containing,%: 10 tons of XC flexor, 19 sorbents and 1 binder. The resulting coating contains, in%: Corrosion inhibitor 28 Methycellulose 5 j Microcrystalline powder / polo 67.0 Example 4. The paper is coated with a suspension with a total concentration of 40%, containing 40% HCA inhibitor, 4 sorbents and 1 binder. . The secondary coating contains, in%: Corrosion inhibitor 85 Metipphipoza4,5 Microchristacleon cell .10.5 EXAMPLE 5. The paper is coated with a suspension: with a total concentration of 40%, containing DCA, 9 benbene, and 1 binder. The resulting coating contains, in%, a corrosion inhibitor79 Methyl tseplyu4,3 Micro crisp cellulose 16.7 PRI me R 6. The paper is coated with a suspension with a total concentration of 40%, containing,%: 25 inhibitors, 14 sorbates and 1 binder. The resulting coating contains,%: Corrosion Inhibitor 7O Methylcellulose 5 Microcrystalline cellulose 25 EXAMPLE 7 Paper is coated with a slurry with a concentration of 4O%, containing,%: 38 inhibitors, 0.5 microcrystalline cellulose and 1.5 methylthypulose. The resulting coating contains,%: Corrosion inhibitor 94.0 Methylcellulose, 4.0 Microcrystalline cellulose2, 0 Physical and mechanical properties of paper with the obtained coating are summarized in the table.

The rate of inhibitor evaporation when the temperature rises from 12.5 to 250 C, MG / 1O min 10 12, O 14.6 Hold (sorbtsi) paper aggressive vapor, mg Og / r paper25.0 38.0 5O, 1 Destroying force of anticorrosive paper, kgf:

6.3 6.3 6.3

6.3 6.3 6.3

6.3 6.3 6.3

Note: Properties of paper after aging at 126 C for 6 hours. As can be seen from the above data, it is as short as in the well-known anticorrosive paper in the proposed corrosion-resistant paper, the breaking length of the coating is resistant to sprinkling. Risse — after wetting and drying — is significantly more abrupt, the length of anti-corrosion paper is reduced. Physical and mechanical properties do not change after wetting and drying. Non-identical properties of anticorrosive gas remain, 6, 3, 5.8

6.3

6.3 6.3 3.8 6.3 6.3

6.3 5.8

6.3 6.3 8, O 9.1 13.2 6.0 2.0 8.2

aSia igiiJua.a.igM jaytifa Jt fe - fe a fesfe 4-- ,.

, ... „,, - -. .t ,,,, .. ,, .., .., a, “a: -№y-- -: .y.;„ ..- „...,: S .. ,,“ - ,

7662649S

magicians with gedlagodaemym coating otkristappicheskoe cellulose with the following from the known and after the heat shrinkage ratio of components, wt.%:

Corrosion Inhibitor28-94

Claims (1)

. Formula invented s Microcrystalline cellulose Anticorrosive coating composition mages containing a corrosion inhibitor and sources of information taken the quality of the binder, the mark of non-fluence, attention in the examination of the individual and the fact that, with the tsellyr1. Technologists of wrapping paper, M „ improving operational properties of the forest industry, 1974, p. 188 magic, it additionally contains a liquid-207 .. Methylcellulose4-5