Method of manufacturing cellulose-polymer composites

FIELD: polymer materials in paper-and-pulp industry.

SUBSTANCE: invention relates to manufacturing cellulose-polymer composites that can be, in particular, used in production paper or cardboard. Method according to invention providing a composition and manufacturing sheet therefrom followed by drying. In the method of invention, aqueous nanodispersion of polyorganosiloxanes is utilized, which can be introduced into composition or can be deposited onto sheet before drying on size press or after drying of sheet to moisture content not less than 12°.

EFFECT: improved waterproofness, increased inflammation temperature, and improved physicochemical characteristics of material.

4 cl

 

The present invention relates to technology for cellulose-polymer composite materials and can be used in various industries, such as woodworking, chemical, chemical, pulp and paper industry, for example, in the manufacture of many types of paper or cardboard.

Closest to the claimed solution is a method of manufacturing a cellulose-polymer composites, in which the composition is prepared with the subsequent manufacturing of the fabric, followed by drying and processing, as well as possible by recycling, using organosilicon compounds, such as NGL-94 (see SU # 107429, CL D21H 21/16, epubl).

The main disadvantage of the known solutions is a significant pozarovzryvobezopasnost process due to the use of organic solvents for the introduction of organosilicon compounds.

The technical result of the proposed method is to increase the hydrophobicity, increasing the ignition temperature, the improvement of physical and mechanical properties of the material.

This technical result is achieved by a method of manufacturing a cellulose-polymer composite materials, including composing, production of her paintings followed his suck the th, this use of organosilicon compounds in aqueous nanodispersions of polyorganosiloxanes. Nanodispersion of polyorganosiloxanes you can enter in composition, put on canvas paper before drying or after drying.

The invention is illustrated by the following examples.

Example 1.

A method of manufacturing a cellulose-polymer composite materials, such as cardboard weighing 150 g/m

In the composition of the waste paper grades MS-6, MS-7 before forming enter polyorganosiloxanes on TU-2310-001-18 803089-2002 in aqueous nanodispersions in an amount of about 60 kg/t of waste paper. Produce sheen of the fabric, followed by drying on the paperboard machine. Drying is carried out at a temperature of at least 105°on the drying drums with the use of ultraviolet radiation.

You get gidrofobiziruyuschey coating film without effect, providing strong protection from moisture environment.

Example 2.

The method is carried out analogously to example 1. The only difference is that as cellulose-polymer composite material was obtained sack paper wet-strength weight 90 g/m2of bleached sulphate pulp. Water nanodispersion of polyorganosiloxanes on TU-2310-001-18803089-2002 in an amount of about 60 kg/t of sulphate pulp is applied to the cloth before drying at the size press is E.

Get gidrofobiziruyuschey coating film without effect, providing strong protection from moisture environment.

Example 3.

The method is carried out analogously to example 1. The only difference is that as cellulose-polymer composite materials are made of wood-fiber Board marks M-1 density of 350 kg/m3wood fiber. On the cloth after dry pressing cause water nanodispersion of polyorganosiloxanes on TU-2310-001-18 803089-2002 in an amount of about 85 kg/t of raw wood.

Get gidrofobiziruyuschey coating film without effect, providing strong protection from moisture environment.

This way you can get a paper, cardboard, fibreboard, etc.

In is used as raw material refined and highly plasticised cellulose, wood pulp and waste paper.

Thus, the invention improves the degree of hydrophobization by volumetric effects on cellulose-polymer composite materials. This significantly reduces the use of environmentally harmful substances and provide a broad technological capabilities.

Allows you to create a fundamentally new cellulose-polymer composite materials.

The proposed method is simple to implement and does not require specially what about the equipment.

1. A method of manufacturing a cellulose-polymer composite materials, including composing, production of her paintings with subsequent drying, while the use of organosilicon compounds in aqueous nanodispersions of polyorganosiloxanes.

2. The method according to claim 1, in which the water nanodispersion of polyorganosiloxanes enter into the composition.

3. The method according to claim 1, in which the water nanodispersion of polyorganosiloxanes put on a cloth to dry.

4. The method according to claim 1, in which the water nanodispersion of polyorganosiloxanes applied to the fabric after drying.



 

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