Polymer binding agent for polymer concrete

FIELD: construction.

SUBSTANCE: polymer binding agent contains polyester resin based on polyethyleneglycol maleate phthalate, a hardening agent - cobalt naphthenate, and as a hardening initiating agent - methylethylketone peroxide in a dimethyl phtalate solution, at the following component ratio (wt %): polyester resin based on polyethyleneglycol maleate phthalate 95.7-97.48, cobalt naphthenate 0.75-1.75, methylethylketone peroxide in dimethyl phtalate is the rest.

EFFECT: increasing strength properties of a polymer binding agent and polymer concretes on its basis.

2 tbl

 

The invention relates to the construction materials industry, in particular the production of polymer binders for the manufacture of polymer concrete.

Known mineral solution comprising a polyester binder, curing system, mineral filler, and the filler (Solomatov Century And. "Polymer concretes and,". - M.: stroiizdat, 1967, S. 86-88).

The closest technical solution is a polymeric binder containing as a binder an unsaturated polyester resin based polietilenglikolmonostearat, the hardening accelerator is cobalt naphthenate, initiator curing - hydroponics cumene, additive, oxal (SU # 1740389, IPC C08L 67/06, SC 5/00, WV 27/04, publ. 15.06.1992).

The technical result is to increase the strength properties of the polymer binder and polymer concretes based on it.

The invention consists in that the polymeric binder for the polymer contains a polyester resin-based polietilenglikolmonostearat, the hardening accelerator is cobalt naphthenate, and as a curing initiator methyl ethyl ketone peroxide in dimethylphthalate density 1,180 g/cm3when the following ratio of components (mass. %):

polyester resin-based

polietilenglikolya is thalatha 95,7-97,48
the cobalt naphthenate0.75 to about 1.75
Methyl ethyl ketone peroxide in dimethylphthalaterest

Polyester resin based polietilenglikolmonostearat brand MO-609-21M (GOST 27952-88) is a clear liquid from light brown to dark brown, without mechanical impurities, the viscosity at 20°C VZ-246 is 20-32 C density at 23°C is equal to 1,165-1,180 g/cm3.

The setting accelerator NK-2 - cobalt naphthenate (TU 2494-002-05015213-2006) - liquid from pink to dark purple color, without mechanical impurities, with the contents of cobalt 1,2-1,5%.

The curing initiator is methyl ethyl ketone peroxide in dimethylphthalate the following composition, %: methylethylketone 30-37, methyl ethyl ketone 1-5, dimethylphthalate 55-70 and water 1-3 with the following structural formula:

;;

Density at 20°C - 1,180 g/cm3viscosity at 20°C 24 MPa·s (ButanoxRM-50 VR).

As fine and coarse aggregate in the manufacture of concretes used ground quartz sand Smolenskoe deposits of the Republic of Mordovia with fineness modulus Mkr=1.4 and granite gravel fraction 5-10 mm

The specified binder is prepared in the following sequence of operations: operating the mixer gradually introduce the required amount of polyester resin on the basis of polietilenglikolmonostearat, methyl ethyl ketone peroxide in dimethylphthalate density equal to 1,180 g/cm3,and cobalt naphthenate and mix thoroughly. The prepared composition is placed in a form. The next day ready-made samples extracted from forms and thermoablative at a temperature of 80°C for 6 hours.

Testing hardened binder and polymer based produce, respectively, for samples of size 1×1×3 cm and 4×4×16 see tables 1 and 2 shows the compositions of binder and polymer concrete based on it and their physico-mechanical parameters.

From comparison of the binder and the polymer prepared to offer and known mixtures, it is necessary that the proposed composition of the polyester binder is more effective: increase physical and mechanical properties (compressive strength, bending modulus of elasticity).

Table 1
ComponentsThe content of components in the compositions, %
The proposed formulations varuser the The composition of the polymer with the proposed astringent
12345the placeholderbinderthe placeholder
Polyester resin-based polietilenglikolmonostearat98,3195,797,0297,4896,196827,212,89
Methyl ethyl ketone peroxide, in solution dimethylphthalate0,942,61,771,772,6-0,51-
The cobalt naphthenate0,751,71,210,751,2170,423,57
G is draperies cumene -------5
-----7
Oxal-----18-7,14
Quartz sand with fineness modulus Mkr=1,4------28,928,6
Granite gravel fraction 5-10 mm------42,142,8

Table 2
ComponentsThe performance properties of the compositions
The proposed composition of binderThe composition of the polymer with the proposed astringentKnown compounds
12345678
The limit of compressive strength, MPa138160166155131706050
The tensile strength in bending, MPa751071119693403530
Mo is ul of elasticity, MPa11381460146514791165308011502800

Polymer binder for polymer comprising a polyester resin-based polietilenglikolmonostearat, the hardening accelerator is cobalt naphthenate and a curing initiator, characterized in that as a curing initiator contains methyl ethyl ketone peroxide in dimethylphthalate density 1,180 g/cm3in the following ratio of components, wt.%:

Polyester resin-based
Polietilenglikolmonostearat95,7-97,48
The cobalt naphthenate0.75 to about 1.75
Methyl ethyl ketone peroxide in dimethylphthalaterest



 

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