Polymer composition

 

(57) Abstract:

Scope: production of construction materials for industrial and civil construction. The inventive polymer composition comprises, in wt.%: cement 13,4 - to 49.9; aqueous dispersion of a polymer synthetic latex selected from the group comprising butadiene, the best choice on BNR, isoprene rubber, butyl rubber, 1,79 - 14,71; wood chips with a moisture content of 50 10% 0,6 - 19,73; quartz sand 5,6 - 39,9; sawdust with a moisture content of 50 10% 0,62 - 11,44; water the rest. The resulting material has a volumetric weight of about 740 kg/m3the limit of compressive strength to 14.56 MPa, elongation and compression to 26.2%, a modulus of elasticity of up to 40.0 MPa, water absorption when immersed for 24 h to 5.2%. table 1.

The invention relates to construction materials and can be used in industrial and civil construction.

Famous composition comprising cement, water, and vegetable fiber as a filler, which is pre-treated in hot bitumen or tar to make them chemical inertness.

Known also use as fillers in cement slabs, this chipboard with the use of PVC is not suitable for internal furnish of premises, as under the influence of heat, sunlight and mechanical damage in PVC are processes of destruction. The decomposition products of PVC, as well as perchloric acid, benzene, chlorinated organic compounds that pollute the environment.

The invention is directed to the development of easy, cheap composite material with improved durability, hygienic and thermal insulation properties.

The technical result, which can be obtained by carrying out the invention is the economic effect from the use of cheap material in building constructions and cost reduction in production due to the reduction of their weight.

This is achieved according to the invention, by the fact that polymer composition comprising cement, water dispersion of polymer, wood chips and water, contains as an aqueous dispersion of synthetic polymer latex selected from the group comprising butadiene, the best choice on BNR, isoprene rubber, butyl rubber, wood chips with a moisture content 5010% and additionally quartz sand, sawdust humidity 5010% in the following ratio, wt.%: Cement 13,4-to 49.9

The specified water dis - ne is Ki humidity 5010% 0,62-11,44 Water the Rest

As polymer additives used are water dispersions (latexes) butyl rubber, on BNR, butadiene - styrene, butadienestyrene, butadiene and isoprene rubbers; as a filler is a mixture of wood chips sawdust and quartz sand, which is injected together with the cement in the form of 50-70% solution in water.

Thanks to the use of the composition of non-toxic, resistant components of the proposed material has good hygienic properties that can be used in residential areas. The use of such light and friable filler, as sawdust and shavings, leads to a decrease of the bulk density of the material. Using the 4 fractions of filler (cement, sand, sawdust, shavings), significantly different particle sizes, provides the strength properties of the material, enough to use it not only for thermal insulation in the form of plates, but in the form of blocks for curtain designs. Low cost polymer composition due to the fact that the material consists of a significant amount of quartz sand and waste wood processing enterprises in the form of chips and sawdust. The disposal of these companies is ment simple, not require a significant investment and development of new equipment.

The combination of these signs provides high economic impact during its implementation.

Information confirming the possibility of implementation of the proposed invention, is shown in the examples of implementation.

When production samples are used sawdust and shavings with their content of moisture 505%, you may want to moisturize the specified value. Latex rubbers, the following amounts (in terms of dry substance) is introduced into sawdust and shavings and mix with them. Cement and sand in the form of concentrated solution is injected into the sawdust and shavings and mix thoroughly. Received loose weight give the desired shape under a pressure of 10-30 kg/cm2.

The following is the composition and properties (table) examples of implementation.

Water, which is involved in the process, as a component in the formula does not take into account, as partially squeezed in the process of pressing, and then it evaporates from the product during its curing.

P R I m e R 1.

Cement (Portland cement of grade M-150) 49,90 Quartz sand 5,62 Wood chips to 11.79 Drew

P R I m m e R 2.

Cement (Portland cement of grade M-400) 13,40 Quartz sand 40,17 Wood chips to 10.09 sawdust 4,94

Latex butadiene-

oxidation of sulfhydryl rubber

SKN-40P armored ground attack aircraft with a dry matter content of 40% 6,55 Water 24,85

P R I m e R 3. Cement (Portland cement of grade M-150) 16,18 Quartz sand 31,12 Wood chips 13,50 sawdust 4,36 Latex butadiene - oxidation of sulfhydryl rubber SKN-40P armored ground attack aircraft with a dry matter content of 42% 3,09 Water 31,75

P R I m e R 4. Cement (Portland cement of grade M-150) 17,98 Quartz sand 33,09 Wood chips 9,35 sawdust 9,35 Latex butadiene - roll rubber SKS-HP with the content of dry matter 30% 1,79 Water 28,44

P R I m e R 5. Cement (Portland cement type M-300) 41,29 Quartz sand EUR 7.57 Wood chips 0,60 sawdust 11,44 Latex butadiene rubber SKD-1 with the content - the content of dry substances - VA 45% 14,71 Water 24,39

P R I m e R 6. Cement (Portland cement of grade M-150) 31,25 Quartz sand 18,75 Wood chips br4.61 sawdust 4.6 butyl rubber Latex with - holding of dry weight allocated 40% 3,15 Water 37,64

P R I m e R 7. Cement (Portland cement of grade M-150) 32,09 Quartz sand 5,62 Wood chips 19,73 sawdust 4,13 Latex polyisoprene - new rubber SCM-3 content dry NOTICE, including cement, water dispersion of polymer, wood chips and water, characterized in that it contains as an aqueous dispersion of synthetic polymer latex selected from the group comprising butadiene, the best choice on BNR, isoprene rubber, butyl rubber, wood chips with a moisture content of 50 10% and additionally quartz sand, sawdust with a moisture content of 50 to 10% in the following ratio, wt.%:

Cement - 13,4 - to 49.9

Specified aqueous dispersion of polymer - 1,79 - 14,71

Wood chips with a moisture content of 50 10% - 0,6 - 19,73

Quartz sand - 5,62 - 40,17

Sawdust with a moisture content of 50 10% - 0,62 - 11,44

Water - The Rest

 

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