JPS59179900A - Inorganic paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-+2+'1 paper, and more specifically, the present invention relates to a non-+2+'1 paper, and more specifically, the present invention relates to a non-+2+'1 paper, and more specifically, the present invention relates to an inorganic powder-free paper, which is highly efficient due to the mutual effect of aluminum hydroxide, which is an inorganic powder, a cellulose-based fibrous material, and a self-extinguishing inorganic material-based slurry. This invention relates to an inorganic paper that has high yield and high flame retardancy.

Conventionally, this persimmon inorganic 1-inch paper has flame retardancy by adding aluminum hydroxide to cellulose toothpick fibers, but in this case, the ratio of aluminum hydroxide to cellulose fibers is 80°20, that is, hydroxide The proportion of aluminum is 8
Unless the stacking ratio is 0 or more, it is not possible to obtain the desired l1lj flammability, and as the amount of aluminum hydroxide increases, the strength of the Japanese paper decreases, which is not practical.゜)j') By internally adding or impregnating flame retardants such as halogen-based, halogen-based, boron-based, nitrogen-based, anti-mono-based, zirconium-based, or composites thereof, the flame retardant is 5 to 3 Offi & 1. There are products that contain around % of the flame retardant, but it is difficult to maintain the flame retardant to the paper quality.
1 [However, the yield rate is poor (to add sufficient flame retardancy, it is necessary to use a multi-fit flame retardant, but its fixation is poor).
However, there are also drawbacks such as limitations and high prices.

The present invention improves the drawbacks listed in Ilv and has a high flame retardancy of 1.
It provides 1ffl + 1 paper with .

The present invention will now be described in detail by way of examples.

Example 1 45 parts of bone-dry NBKP (same part by weight - F) was disintegrated and dispersed in water, 55 parts of aluminum hydroxide, which is an inorganic powder, was added, and antimony trioxide, which is a self-extinguishing inorganic substance, was added. A slurry was prepared by adding 10% to P-N B'K P, and then a cationic cellulose-reactive sizing agent, ketene dimer ([Burcon 40J, Tick Bercules Wi2) was added to the slurry by 1%.
, Highly polymerized acrylic water-soluble resin (rM-
+430J, Kaisei Chemical Industry ■! I! After adding 0.2% of 2) to the slurry in H, paper was made using a regular square hand-made Manon paper having a basis weight of 12o9/m.

Example 2 The addition horn method, etc. is the same as Example 1. Comparative example 1: 45 parts of absolutely dry NBKP (same parts by weight) in water.
llt solution and dispersion, 55 parts of aluminum hydroxide was added thereto to prepare a slurry, and then a cationic fiber cumulative reaction type slurry agent [Harni]/4DJ was added to TIi + slurry at 1%, high 11 Acrylic water-soluble resin rM
-+4so'' was added in an amount of 0.2% to the slurry, and the paper was made using a conventional square hand-sheet machine to give a basis weight of 12a9/m'.

Comparative Example 2 20 parts of bone-dry NBKP (the same applies below the ffim part) was dissolved in water, 80 parts of aluminum hydroxide was added thereto, the slurry was adjusted to IA, and then 141i! Acrylamide as a paper strength enhancer N B K P +? pair 4
025%, “Kaime/” (manufactured by Tick Bercules ■)
After 35% of NBKPi Nimon Sushi was added to the slurry, 1% of "□ Bacono 40" and 02% of MI 430 to the slurry were added to the normal square edge handmade mano/
The paper was made to have a weight of 1112 og/bi.

Comparative Example 6 NBKP 100 parts Anothymonotrioxide 20 parts 1 Botethylenimine 02 parts W, (Results 1iij Ida 11 to Otsutanhi) The results of testing Comparative Examples 1 to 5 are shown in the table.

Table 1 - fil fuel 1/1. Metzkel burner? left (JISZ
2150) to rII! do.

Tensile Strength As is clear from the table in JIS P 8413 Part 11, Examples 1 to 2 were sufficiently satisfactory in terms of flame retardancy, and especially in Examples 1 and 2, the strength of aluminum hydroxide was Despite the low additive rate of 40 to 55 tri%, high yield is achieved due to the additive effect of aluminum hydroxide and self-extinguishing + inorganic substances on cellulose fiber Nl' output material. ) (By adding a sizing agent and a flocculant, the yield can be improved and the papermaking layer 1 can be improved). On the other hand, in Example-5, the high flammability was lost or the addition of aluminum hydroxide was increased b+, and even in the comparative Qll 2 t, the effect was achieved even though the paper strength enhancer was added. could not be seen at all.

In addition, in the case of Comparative Example B, it is necessary to add a large amount of flame retardant to the rose in order to provide sufficient flame retardancy. As can be seen from the fact that the inorganic 114 paper of the present invention is a material that is expensive in terms of
Weight% (preferably 40-60 weight%) Apparatus Lulose-based Kasuri cloth material 5-60@', iii% (this self-extinguishing 1
1) By adding a sizing agent and a coagulant to the slurry base (71-force law), the yield rate is increased due to the charge additive effect of adding an inorganic substance, and the paper-making properties are increased by 6 times. An inorganic paper with flame retardance of +4 and excellent paper strength could be obtained.

Claims (1)

[Claims] Inorganic powder) Aluminum hydroxide 40-95ff
lfi% and cellulose-based muntin material 5-60% by weight
A cationic cellulose-reactive sizing agent such as an alkyl ketene timer and a flocculant such as a highly polymerized acrylic water-soluble resin are added to the slurry, which is made by adding self-extinguishing inorganic substances such as antimony pentoxide. What I wrote on paper 1. ■Characteristic of inorganic 1-1 paper.