Crude mixture for producing heat-insulating materials

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and specifically to compositions of mixtures for making heat-insulating articles used in building walls, floors and partition walls. The crude mixture for producing heat-insulating materials contains the following in wt %: wood aggregate 69.0 - 78.0, hydrolised lignin 1.0 - 2.0, ground thermoplastic wastes 20.0 - 30.0.

EFFECT: reduced toxicity of heat-insulating articles.

1 tbl


The invention relates to the construction materials industry, namely the composition of the raw material mixtures for the manufacture of insulation products used in the construction of walls, floors, partitions.

Famous raw mix for the production of insulation products containing, wt.%: wood filler to 58.9-77,2; phenol-formaldehyde resin 12,7-23,6; lignin 2,9-9,1; nephratonia waste weaving 7,2-13,2 [1].

The objective of the invention is to reduce the toxicity of insulation products.

Technical result is achieved by the fact that the raw mix for the production of insulation products, including wood filler, binder, lignin, as a binder contains shredded waste thermoplastic in the following ratio, wt.%: wood filler 69,0-78,0; lignin 1,0-2,0; shredded waste thermoplastic 20,0-30,0.

The table below shows the composition of the raw mix.

ComponentsComposition, wt.%
Wood filler78,0 73,569,0
Shredded waste
- polyethylene20,0--
- polypropylene-25,0-
- of polystyrene--30,0

Composition No. 1, 3: quality wood filler use chips.

Composition No. 2: as a wood filler use sawdust.

The following is an example for insulating products offered raw mixture.

The components are metered in the desired quantities.

Prepare wood filler (shredded, obtained from waste treatment pines). The aggregate is crushed to particle size of not more than 5 mm thermoplastic Waste plastics (polystyrene) is crushed to particle size of not more than 3 mm Wood filler, waste thermoplastic plastic, hydralisk the th lignin is mixed. The resulting mass is heated to a temperature of 100-105C and formed into the desired product configuration, which then utverjdayut to room temperature.

Products offered raw mixture durable, water-resistant, do not contain phenol-formaldehyde resin. Products are environmentally friendly.

Sources of information

1. USSR author's certificate No. 1131856, 1984.

Raw mix for the production of insulation materials, including wood filler, binder, lignin, characterized in that the binder contains shredded waste thermoplastic in the following ratio, wt.%:

wood filler69,0-78,0
shredded waste thermoplastic plastic20,0-30,0


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1 tbl, 3 ex

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2 tbl

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2 tbl, 2 dwg

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1 tbl