SU1676834A1 - The way of the manufacture of modified fibrous materials - Google Patents

Abstract

The invention relates to the production of building materials and allows us to simplify the process and improve the quality of the material. The pulp is prepared from pulp and paper industry waste — waste paper and / or osprey by hydro-grinding. The waste is fed to the casting machine, vacuum-drained and compacted in a press with a pressure of 0.05-0.4 MPa. On the compacted mass they impose a textured paper with a pattern upwards, a separating pad of stainless steel is put on it, a textured layer of paper is placed on top of it and the second layer of compacted pulp is placed on it. The bag prepared in this way is placed in a press and maintained at a pressure of 0.8-1.5 MPa at 130-160 ° C, then the separator pad is removed, the resulting product is placed in a container, evacuated, impregnated with monomer vinyl or methyl methacrylate and polymerized by gamma radiation. 1 tal. ate with

Description

The invention relates to the production of building materials and can be used in the manufacture of decorative facing tiles, structural and other materials that replace wood, plastic and ceramics.

The aim of the invention is to simplify the manufacturing process of the material and improve its quality.

PRI me R 1. The paper wastes crushed in a hydrobromiser are fed to a casting machine, dewatered by vacuuming and compacted in a press with a pressure of 0.2 MPa. Textured paper is placed on the compacted mass with a pattern upwards, a stainless steel separator pad is put on it, the textured paper is placed on the top with a pattern downwards and the second

a layer of compacted paper pulp. The bag prepared in this way is placed in a press and kept for 60 minutes at 150 ° C and a pressure of 1.0 MPa. After pressing, a separator pad is removed and the resulting products are placed in a container, vacuumized, impregnated with methyl methacrylate and polymerized with a gamma radiation dose of 10 kGy.

PRI mme R 2. Fibrous mass obtained from 80% osprey and 20% waste paper is fed to the casting machine, dehydrated by vacuuming, compacted with a pressure of 0.4 MPa, a fabric with a pattern is applied to the compacted mass , on the gasket impose a decorative fabric and on top of the second layer of compacted mass. Prepared package

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placed in a press and kept for 90 minutes at 130 ° C and a pressure of 0.8 MPa, after which the separation pad is removed, the products are placed in a container, evacuated, the atom is impregnated with methyl methacryle and polymerized with a gamma radiation dose of 10 kGy.

Example Pulp obtained from 100% osprey is fed to the casting machine, dehydrated, compacted with a pressure of 0.05 MPa, fiberglass is applied to the compacted mass, a separating pad having a raised surface is superimposed on the pad, and a second layer of compacted fibrous pulp is applied to the pad The prepared package is placed in a press and incubated for 30 minutes at 160 ° C and a pressure of 0.5 MPa. after pressing, the separation pad is removed, the products are placed in a container, vacuumized, impregnated with vinyl monomer and polymerized with gamma radiation at a dose of 12 kGy.

EXAMPLE 4 Differs from Example 1 in that final pressing is carried out at 130 ° C and pressures of 1.5 MPa 60 minutes.

Example 5. Differs from Example 2 in that the holding time in a hot press is 150 minutes.

Example 6. It differs from Example 3 in that the hot pressing is performed at a pressure of 1 MPa.

Example. It differs from Example 3 in that hot pressing is performed at a pressure of 1.2 MPa.

Example It differs from Example 3 in that hot pressing is performed at a pressure of 1.5 MPa.

The table shows the characteristics of the prototype and the proposed materials.

Claims (1)

Claims The method of making a fibrous modified material, comprising preparing the pulp by hydro-grinding, molding a carpet from it, casting, hot pressing and impregnating the monomer with its polymerization under the influence of ionizing radiation, characterized in that, in order to simplify the process and improve the quality of the material, the fibrous material Before pressing, the carpet is additionally compacted under a pressure of 0.05-0.4 MPa and decorative material is placed on the surface of the compacted carpet. ial, cover it with a separating pad, on which the decorative material and the second layer of the pre-compacted carpet are repositioned, after which they are pressed under a pressure of 0.8-1.5 MPa and at a temperature of 130-160 ° C, while the pulp is prepared from paper waste paper and / or osprey - waste of pulp and paper industry. Water absorption in 24 hours,% 10.5 Swelling by thickness for 24 h,% 10 Strength at static bending, MPa 90 Abrasion wear, g / cm2 0.60 9,511.7К, 59,411,59,39,29,2 9,311,314,19,311,29,29,19,1 908268908590,190,390 0,500,520,580,500,510,500,490,49