SU1694557A1 - Method of polymer-concrete preparation - Google Patents

Abstract

The invention relates to the production of building materials and can be used to make facing polymer concrete based on aggregate from natural mineral materials. The aim of the invention is to increase the stability of the strength and modulus of elasticity of concrete. The method of manufacturing polymer concrete consists in gluing the aggregate with a polymer composition, including, wt.h .: a-methacrylo) -carboxytriethylene glycol phthalate 100, perchloroforin resin 10-20, benzoyl peroxide 1-3, aging for 30-40 minutes , and the filling is performed with a polymer composition, including, May, h,: polyvinyl chloride 100, oligoester acrylate 50-70, and -metzcryl-CD-carboxytriethyleneglycolphthalate 5-10, azoisodinitrile diisobutyric acid 0.05-0.5, heat treatment is carried out at 140-150 ° C for 15-30 minutes. Compressive strength at 20 ° C is 73.0-76.1 MPa, at 40 ° C - 97-98% of the latter, at 60 ° C - 93-96%, at 80 ° C ; C- 88-93%. The modulus of the pole of the floor of the merbeton is at 20 ° C 2.82-3.16 1Q4 MPa. at 40 ° C - 96-97% of the latter, at 60 ° C - 92-95%, at 80 ° C - 88-90%. 1 tab. (Ls

Description

The invention relates to the production of building materials and can be used in the manufacture of cladding material from polymer concrete based on aggregate from natural stone.

The aim of the invention is to increase the stability, strength and modulus of elasticity of polymer concrete.

According to the proposed method, the following polymer components are used (see table): perchlorovinyl resin grades PSC-C (example 4) and PSC-H (examples 1,2,3,5, 6) (GOST 7343-76); a-methacryl-ft) -carboxy-triethylene glycol phthalate, which represents

is a by-product of the production of oligoether acrylate of mark MGF-9 at Novomoskovsk NPO Azot (TU 11303 12-02 86); benzoyl peroxide (GOST 14886-62); polyvinyl chloride grades E-62 (example 4) and EP-6602-C (examples 1, 2, 3, 5, 6) (GOST 14039-78); oligoether acrylates of brands TGM-3 (example 4) (TU 6-01-845-73) and MGF-9 (examples 1,2, 3,5,6) (TU 6-01-460-76), azoisodinitrile diisobutyric acid porofor CHP-57 (TU 6-14-237-69).

In all cases, sand and crushed stone of igneous rocks (granite) with a fraction of 2.5-5.0 mm is used as a filler.

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The pretreatment is filled with the proposed polymer composition. With subsequent exposure, it provides the conditions for the joint work of the filler with the Polymeric binder based on polyvinyl chloride. During the aging process (30–40 min), this degree of polymerization of α-methacryl-O) -carboxy-triethylene glycol-colphthalate is achieved in the presence of benzoyl peroxide, which is necessary to obtain strong fixed structures in the surface layers of the aggregate and at the same time provides enhancing adhesive interaction with the binder. Moreover, the viscosity properties of the polymer composition make it possible to create a reinforced surface layer of the filler due to diffusion processes. The presence of a-methacrylo-o-carboxytriethylene glycol phalate, both in the aggregate treatment and in the binder, determines the increase in the homogeneity of the mechanical properties and the physical and chemical stability of the system. The use of polyvinyl chloride in a binder in combination with α-methacryl- (o-carboxy-triethylene glycol phthalate and oligoether acrylate) also leads to a high thermal stability of the basic physicomechanical properties of the material. - m-carboxy-triethylene glycolphthalate, as well as due to the interaction of carboxyl groups with mineral aggregate. These processes, the passage in the presence of polyvinyl chloride, lead to the formation of half-reciprocal structures Such multiple connections prevent the development of deformation when the temperature rises. The natural stone aggregate is treated with the proposed polymer composition by dipping or spraying or by any known method.

After soaking, the filler is placed in a mold for 30-40 minutes, and then it is poured into a previously prepared polymer binder composition. The degree of filling, as usual in polymer fiber, is from 30 to 50% by volume. Also, as in the known method, the casting can be carried out naturally, either with a vacuum or under pressure. During the subsequent heat treatment at 140–150 ° C for 15–30 min, depolymerization of the previously obtained surface layer of the filler, polymerization of the binder composition, and their cross-linking occur simultaneously.

The table presents the composition of the impregnating compositions, the parameters of impregnation and the properties of the obtained polymer concrete products.

Claims (1)

Claims The method of manufacturing polymer concrete for facing works by gluing a skeleton of a mineral aggregate with a polymer composition, filling it with a polymer composition and heat treatment, characterized in that, in order to increase the stability, strength and elastic modulus of the polymer concrete with a change in temperature, the aggregate is glued with polymer composition, including parts by weight: o. -methacryl-m -carboxytriethylene glycolphthalate 100, perchlorovinyl resin 10-20, benzoyl peroxide 1-3, the filling is carried out with a polymer composition, comprising, by weight.h .: Polyvinyl chloride 100 Oligoacrylate50-70 a-methacryl- a) -carboxytri ethylene glycolphthalzt5-10 Azoisodinitrile diisobutyric acid 0.05-0.5 and the heat treatment is carried out at 140-150 ° C for 15-30 minutes. five Composition for treating ot-methacryl-ocarboxyethylene glycol phthalate aggregate perchlorovinyl resin benzoyl peroxide The duration of the extractor field processing field Binder composition: polyacrylate oligoether acrylate oC-methacryl- "- carboxytriethene-glycol phthalate porophore (adisodinyl diieobutyric acid) Heat treatment mode: the temperature is long Property Indicators: Compressive strength at 20 ° C at 40 ° C at 60 ° C at 80 ° C Elastic modulus: at 20 ° С at LО С at 60 ° C According to the invention 100 100 722 B0,5 U1 7 100 7 12 69.1 2.6 0.6 130 CO Prototype 100 / 70.3UO / 77.7 9086 / 66,7 867V57.4 7266 / 51.2 100 / 3.10100 / 2.9 about (ABOUT l ate 86 87 / 2.5 at 80 ° C 3 Abradability Water Absorption 84 70 1.6 3.2 77 / 2.2 66 / 1.9 2.0 3.6 ABOUT)