CN105314960A - Inorganic fiber enhanced composite material and preparation method thereof - Google Patents

Abstract

The invention provides an inorganic fiber enhanced composite material, namely a compound phosphate binding material which is low in material cost, simple in preparation process, better in initial flowing property, high in forming speed, high in early strength, nontoxic and environment-friendly. By adopting mold casting and extrusion forming technologies, pipelines, tank bodies, decorative materials, artworks, fireproof doors and windows and the like in various shapes and specifications can be industrially produced. The technical problem solved by the invention is to provide an inorganic fiber enhanced composite material which can be used for industrial production, and the inorganic fiber enhanced composite material has the characteristics of low cost, simple process, environmental friendliness, no toxicity, relatively good slurry flowing property, fast solidification, early strength, durability, stability and the like.

Description

A kind of inorganic fiber reinforced composite material and preparation method thereof

Technical field

The present invention is a kind of inorganic fiber reinforced composite material, this material is actual is a kind of chemical combination phosphate concrete, the cost of material is low, blending process is simple, and initial fluidity is better, fast shaping, early strength is high, nontoxic, environmental protection, adopting mould to build can the product such as pipeline, tank body, finishing material, artwork, fire-proof doors and windows of suitability for industrialized production different shape specification with extrusion forming technology.

Background technology

Chemical combination phosphate concrete has fast solidifying property, early epistasis, the characteristic of weather resistance and stability, and China starts late to its research, and application is few at present.Chemical combination phosphate concrete is a kind of gelling material utilizing the acid-base reaction between superphosphate and basic alkaline earth metal oxide compound to be formed.At room temperature there is chemical reaction setting and harden in material, the similar silicate cement of forming process, and easy and simple to handle, final hydrated product has the feature of stupalith, has higher mechanical property and good density and acid-alkali-corrosive-resisting performance; But material behavior is incomplete consistent with stupalith, and also different from cement material, its characteristic is situated between the two.

In material, the selection of metal oxide is most important to performance, and the performance of solubleness to material of metal oxide plays an important role.In metal oxide, the dissolution rate of magnesium oxide in water is moderate, and resultant is comparatively stable.And phosphoric acid salt is another major ingredient preparing chemical combination phosphate concrete, it provides phosphate radical and sour environment for reaction process.Current domestic conventional phosphatic raw materials be biphosphate by.Biphosphate, by discharging a large amount of ammonias in the reaction, causes environmental pollution.

Because of the rapid coagulation characteristic of chemical combination phosphate concrete in reaction process, for ensureing the production operation time, retardant is absolutely necessary, and current domestic main employing borax is as retardant.In inorganic materials, add intensity and toughness that staple fibre can improve material, conventional is polypropylene fiber at present.

The object adding filler in the material improves structural performance, and weight reduction reduces costs, domestic conventional filler mainly river sand, stone, flyash.

Summary of the invention

A kind of inorganic fiber reinforced composite material that can be used for suitability for industrialized production is there are provided in this technical problem solved by the invention, have that cost is low, technique be simple, environment-protecting asepsis, slip mobility better, solidifying property, early epistasis soon, weather resistance, the feature such as stable.

For solving the problem, the technical solution adopted in the present invention is:

1, the present invention is a kind of inorganic fiber reinforced composite material, formulated in certainweight ratio primarily of magnesium oxide, phosphoric acid salt, retardant, staple fibre, filler and water.The per-cent of each component is: magnesium oxide 30%-35%, phosphoric acid salt 20-25%, retardant 1%-3%, staple fibre 1%-2%, filler 10-15%, water are surplus; Described phosphoric acid salt is potassium primary phosphate, primary zinc phosphate, SODIUM PHOSPHATE, MONOBASIC; Described retardant is borax, boric acid, sodium polyphosphate; Described staple fibre is glass fibre, polypropylene fiber, steel fiber; Described filler is flyash, silicon ash, stone flour.Magnesian purity is not less than 75%, and fineness is not less than 80 orders, and filler fineness is not less than 40 orders.

The preparation method of inorganic fiber reinforced composite material is as follows:

(1) prepare burden by weight proportion:

Magnesium oxide 30%-35%, phosphoric acid salt 20-25%, retardant 1%-3%, staple fibre 1%-2%, filler 10-15%, water are surplus;

Described phosphoric acid salt be potassium primary phosphate, primary zinc phosphate, SODIUM PHOSPHATE, MONOBASIC one or more;

Described retardant be borax, boric acid, sodium polyphosphate one or more;

Described staple fibre is the one in glass fibre, polypropylene fiber, steel fiber;

Described filler is flyash, silicon ash, one or more in stone flour.

(2) homogenizing is mixed

Magnesium oxide, retardant, phosphoric acid salt, filler and staple fibre will be added while stirring in order in a reservoir, and fully mix.

(3) inorganic fiber reinforced composite material is prepared

Water is injected stirred vessel uniformly, stirs 1 one 3min, obtain material slip.

Inorganic fiber reinforced composite material feature of the present invention is as follows:

(1) cost of the present invention is low, production technique simple, can be used for suitability for industrialized production, is convenient to promote.

The present invention substitutes timber, steel, plastic or other material, and the application for chemical combination phosphate concrete opens brand-new field.

Slurry preparation of the present invention is simple, mobility better, and condensation is fast, strength development is rapid, materials ' durability, good stability.

Reaction process unharmful substance of the present invention is separated out, environmentally safe.

The present invention is condensed soon, and early strength is good, without the need to special curing condition.

Embodiment:

(1) get the raw materials ready by the weight percent of following ingredients:

Magnesium oxide 35%;

Potassium primary phosphate 20%;

Primary zinc phosphate 5%;

Borax 1.5%;

Sodium polyphosphate 0.5%;

Staple fibre 1%;

Stone flour 10%.

(2) material slip is prepared:

Start stirred vessel and add magnesium oxide, borax, sodium polyphosphate, potassium primary phosphate, primary zinc phosphate, stone flour, staple fibre while stirring in order, and fully mix, finally add water, stir 3min, obtain material slip.

(3) performance test:

The shaping rear 4h of slip casting, ultimate compression strength is not less than 27Mpa; Ld ultimate compression strength is not less than 36Mpa; 7d is that ultimate compression strength is not less than 48Mpao

Beneficial effect of the present invention:

1, for the application of chemical combination phosphate concrete opens brand-new field;

2, cost of the present invention is low, manufactures easy, nontoxic, can substitute timber, steel and plastics in a large number, protect environment protection, decrease pollution;

3, for the compound method of phosphate concrete opens new method;

4, road has been opened up for phosphate concrete is applied to large-scale commercial production.

Claims (7)

1. the present invention is a kind of inorganic fiber reinforced composite material, it is characterized by primarily of magnesium oxide, phosphoric acid salt, retardant, staple fibre, filler and water formulated in certainweight ratio.

2. the per-cent of each component is:

Magnesium oxide 30%-35%, phosphoric acid salt 20-25%, retardant 1% one 3%, staple fibre 1% one 2%, filler 10 one 15%, water are surplus;

Described phosphoric acid salt be potassium primary phosphate, primary zinc phosphate, SODIUM PHOSPHATE, MONOBASIC one or more;

Described retardant be borax, boric acid, sodium polyphosphate one or more;

Described staple fibre is the one in glass fibre, polypropylene fiber, steel fiber;

Described filler is flyash, silicon ash, one or more in stone flour.

3. inorganic fiber reinforced composite material according to claim 1, it is characterized in that magnesian purity is not less than 75%, fineness is not less than 80 orders.

4. inorganic fiber reinforced composite material according to claim 1, is characterized in that described filler fineness is not less than 40 orders.

5. the preparation method of inorganic fiber reinforced composite material as claimed in claim 1, is characterized by

(1) prepare burden by weight proportion:

Magnesium oxide 30%-35%, phosphoric acid salt 20-25%, retardant 1%-3%, staple fibre 1%-2%, filler 10-15%, water are surplus;

Described phosphoric acid salt be potassium primary phosphate, primary zinc phosphate, SODIUM PHOSPHATE, MONOBASIC one or more;

Described retardant be borax, boric acid, sodium polyphosphate one or more;

Described staple fibre is the one in glass fibre, polypropylene fiber, steel fiber;

Described filler is flyash, silicon ash, one or more in stone flour.

6. (2) mixing homogenizing:

Magnesium oxide, retardant, phosphoric acid salt, filler and staple fibre will be added while stirring in order in a reservoir, and fully mix.

7. (3) prepare inorganic fiber reinforced composite material:

Water is injected stirred vessel uniformly, stirs 1 one 3min, obtain material slip.