SU1719345A1 - Method of manufacturing construction products - Google Patents

Abstract

The invention relates to the production of building materials and products, per hour: ... 2 volumes of highly filled materials based on thermoplastic polymers. The purpose of the invention is the disposal of waste and the expansion of the resource base. A method of manufacturing building products consists in mixing a binder — polyamide fiber waste or thin-layer polyethylene crumb — a product of grinding household waste in an unregenerated and unconsolidated state with a mineral filler heated above the melting point of the binder, molding, pressing the products at a pressure of 0.1 - 10 MPa and their cooling. The compressive strength of the products is up to 90 MPa, bending up to 28 MPa, abrasion rate of 2-3 kg / m2, thermal conductivity 0.15 - 0.9 3 W / m. 1 tab. (S С

Description

The invention relates to the production of building materials and products, in particular highly filled materials. On the basis of thermoplastic polymers with a predominant mass content of fillers of products made from them.

The purpose of the invention is the disposal of waste and the expansion of the resource base.

As a thermoplastic binder, polyamide wastes or thin-layer polyethylene crumb are used - a product of household waste crushing in an unregenerated and unconsolidated state. /

PRI me R 1. Scraps of high-pressure polyethylene film, including bags, mixed with heated to 250 ° C expanded clay fractions of 16-20 mm in the amount of 6 wt.h.

waste per 100 wt.h haydite. The resulting mass is discharged into the mold, pressed at a pressure of 0.1 MPa and cooled. Get a plate with a compressive strength of 2 MPa, bending - 0.3 MPa - filter.

PRI mme R 2. Polyethylene bags, in which primary polymers were previously packaged, are mixed with gravel of 12 to 16 mm fractions heated to 225 ° C in an amount of 5 parts by weight of polyethylene film waste per 100 parts by weight of gravel. The resulting mass is discharged into the mold, pressed into at a pressure of 1.0 MPa and cooled. Get the plate with a compressive strength of 3.5 MPa. for bending 0.6 MPa. Purpose - filter plates for filters for hydraulic, meliorative fish protection and other structures.

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PRI me R 3. Household polyethylene film wastes (bags of different sizes, film for packaging, etc.) are mixed with expanded clay sand of up to 320 ° C in an amount of 25 parts by weight of polyethylene film wastes per 100 parts by weight of expanded clay sand . The resulting mass is discharged into the mold, is pressed into at a specific pressure of 3.0 MPa and cooled. Thermal insulation constructive products are obtained: compressive strength 12.5 MPa, flexural strength 6 MPa, abrasion resistance 3 kg / m, thermal conductivity 0.15 W / (m. ° C).

EXAMPLE 4 After a year of operation from a greenhouse, a polyethylene film containing on average about 20% by mass of dust, sand and moisture is mixed in 50% by weight of silica sand heated to 400 ° C. waste per 100 wt.h sand. The resulting mass is discharged into the mold, pressed into at a pressure of 5.0 MPa and cooled. Waterproof plates with a compressive strength of 19 MPa, bending of 12 MPa, abrasion of 2 kg / m2, thermal conductivity of 0.35 W / () are suitable for lining hydraulic channels, floor coverings, etc.

PRI me R 5. An entangled kapron yarn formed in the textile industry during trimming of yarn residues from bobbins, fragments of nylon fishing line and fabric are mixed with quartz sand heated to 450 ° C or polypropylene twine waste mixed with heated to 350 ° With quartz sand (B), or scraps of thin-layer sheets of polystyrene plastics are mixed with quartz sand heated to 350 ° C (13), in each variant in the amount of 20 wt.h. polymer waste per 100 wt.h. sand, unload the resulting mass in the form, prepress under a pressure of 10 MPa and cool.

Tiles with a compressive strength of 90 MPa, (A) 22 MPa (B), 31 MPa (B), bending - 28 MPa (A), 7 MPa (B) and 10 MPa (C) are obtained .; abrasion of 2 kg / m and thermal conductivity of 0.5 W / (m. ° C) (A), 0.35 W (m. ° C) (B) IO, ZOVt (m-0C) (B) - waterproof products of various construction purposes.

Example 6. Scraps of nylon fabric

containing more than 2.0 wt.% of impurities and moisture, is mixed with quartz sand heated to 570 ° С in an amount of 35 parts by weight of waste per 100 parts by weight. sand. Received

the mass is discharged into the mold, pressed into the addition of 10 MPa and cooled. Get the product compressive strength of 80 MPa, bending - 22 MPa, abrasion 3 kg / m thermal conductivity of 0.6 W (m. ° C).

Example. The same composition as in example 7 with a filler heating temperature of 600 ° C and a pressure of 11 MPa. This example gives the worst performance for strength and thermal conductivity.

Compression tests were carried out according to GOST 4651-82 on prism specimens of 30x15x50 mm. Bending tests were carried out by analogy with GOST 27180-86 on the sample beams of 250x50x15 mm

(for composition 1 - size 250x80x55 mm), base 200 mm. Abradability is determined according to GOST 13887-81 at LKI-3, thermal conductivity according to GOST 7076-87.

Examples of the invention and

properties of sample products are presented in the table.

Claims (1)

The invention The method of manufacturing building products by mixing thermoplastic binder with a mineral filler heated above the melting point of the binder, molding, pressing and cooling, characterized in that, for the purpose of waste disposal and expansion raw material base, as a thermoplastic binder, fibrous or thin layer waste of thermoplastic polymeric materials in an unregenerated and unconsolidated state is used, and the extrusion of products is carried out at a pressure of 0.1-10 MPa.