CN1083434A - Nest type polygon hollow compound fibre cement board and production method thereof - Google Patents

Abstract

Fiber-reinforced composite cement plate and production method that a kind of inside has nest polygon and is composited by the two layers of thin Wall board, have high voidage and very high structural strength, has simple and reliable molding mode, its great advantage is that cost is low, raw material are extensive, but the substitute for clay brick wall is used for partition material, reaches various Dai Mu, anticorrosion sheet material, as open-air tables and chairs panel, prefabricated house top boards etc., its forming method is suitable for large-scale industrialization production.

Description

Nest type polygon hollow compound fibre cement board and production method thereof

The present invention relates to the method and the product that utilize the fibrous material refinforced cement to make hollow light sheet material.

The hollow cement board that existing fibre reinforced cement is composited mainly adopts alkali resistant glass fiber or adopts polypropylene fibre to prescind back and cement mixing, adopts the moulding process of traditional cassette ceiling.Make the porous plate of loosing core, as materials for wall.Open town novel building member factory as China's Beijing Shunyi County, the PP fiber reinforced cement wallboard that glass fiber reinforced cement wallboard that Huili Wall Material Factory, Shanghai etc. produce and the refreshing limited company of Taiwan Province dragon produce is by above-mentioned technological forming.This series products major defect is that the product voidage is low, unit weight is big, in order to alleviate panel weight, adopts filling with light material or aerating foaming mostly, and the result has sacrificed the strength of materials has increased the cost of raw material, and its unit weight at least also will be between 0.8-1.0.Chinese patent 89108147.X adopts premixing infusion technology to make the glass fiber reinforced cement wallboard, adopts the glass fibre that prescinds to sneak in the cement by mixer, and fiber architecture is disorderly and unsystematic, and the usage factor of fiber is extremely low, only is 0-10%.From above-mentioned technology and product, all be sacrificing cement material intensity, increase cost of material and reduce material unit weight and destroy the directed effect that strengthens of continuous fiber and exchange summary on the moulding process for.From the angle of Product industrialization production application and from mechanics of materials angle is very irrational.

The object of the present invention is to provide a kind of new moulding technique and rational product structure,, reduce the raw material consumption, gain in strength, thereby reduce cost to improve stock utilization.

Of the present invention being described in detail as follows:

In order to make full use of strength of materials characteristic, except adopting existing in the market alkali resistant glass fiber, by multiple medium-alkali glass fibre, polypropylene fibre or high elastic modulus vinylon fibre, steel fibre etc. is made into netted as outside the reinforcing material even, sheet material is made the inner nest polygon that is, two surfaces are the composite concrete board of thin-wall face, inner nest polygon, be preferably the best continuous distributed of hexagon (promptly cellular) fiber in cement, but continuous fiber silk or fleece.According to instructions for use, can distribute one or more layers, do also can in same goods, make up multiple fiber and make reinforcing material the enhancing except adopting the single kind fiber.Be used in combination as steel fibre and glass fibre and can obtain better resistance of failure.As adopt glass fiber reinforced cement to be the GRC material of present international general designation, also be the at present domestic material of purchasing that generally has.

In order accurate moulding to form honeycomb or above-mentioned other body, design special mould, have the core of cellular or above-mentioned other body in the mould, on the be enclosed within core that coating releasing agent or macromolecular material are made on the core, the release liner material.This macromolecular material can be that plastics also can be elastomeric materials.The plastic bushing of the preferably plastic foamed disposable band in back in product.During moulding the cement mortar of preparation is injected in the mould, is distributed into fibrous material simultaneously, by vibration and roll-in, in mould paste materials be full of closely knit till.Form the sheet material semi-finished product of band nest after the demoulding.These semi-finished product with bonding by cement self bonding strength with the thin plate of quadrat method moulding, through maintenance after a while, are promptly made product of the present invention again through maintenance.

Because the present invention has adopted above-mentioned forming method and product structure, the traditional GRC hollow wall panel of cement material amount ratio is saved more than 30%, unit weight is reduced between the 0.4-0.7, product strength substantially exceeds traditional GRC hollow wall panel, and can be made into the sheet material of various uses, as open-air tables and chairs panel, prefabricated house top board, wallboard etc.As partition plate, in plate, leave together vertically trough between honeycomb or above-mentioned other polygon nest body, so that use during indoor cotton covered wire, can avoid cutting a hole the wall fluting.Be connected between plate and the plate and can adopt existing socket joint groove mode and give the iron mode of burying.

The present invention is provided by following examples and accompanying drawing thereof:

Figure one. cross-sectional view during cellular hollow compound fibre cement board semi-finished product moulding.

Figure two. cross-sectional view during the finished product moulding of cellular hollow compound fibre cement board.

Figure three. cellular hollow compound fibre cement partition plate plate part sectioned view.

Figure four. several nest type polygon hollow composite concrete board diagrammatic sketch.

At first the frame 1 with mould is fixed on the base plate 4, puts into polyhedron core 2, coats releasing agent or puts release materials 3, and releasing agent can be used saponified oil.Release materials can be with plastic bushing or rubber bushing.Cement and sand are added water in 1: 1 ratio, stir the companion and evenly form cement mortar 6 in the back, in the injection mould, fiber mesh cloth 8, can adopt existing fiber alignment to strengthen the cloth net arrangement is distributed into, be placed on vibration on the shake table 5, carry out while vibrating roll-in by vibration pressure roller 7 above, make cement mortar reach closely knit till, demoulding maintenance or curing in the mold are then demarcated about intensity 70%-80% when product reaches cement, be more than 16 hours general summer, be more than 36 hours winter, and above-mentioned semi-finished product 12 are compound with another plate face, and compound tense adopts above-mentioned mortar preparation method earlier, cement mortar 10 is injected in the template die 9, fleece 11 on the cloth, roll-in above same the employing, below vibration mode, with plate face cloth even after, semi-finished product 12 are buckled on the slab material of firm moulding,, finish entire making process by bonding typing after the adhesive property maintenance of cement itself.As partition plate usefulness, trough 13 and side socket joint groove 14 are left in the centre, and its length designs on demand.

Claims (3)

1, a kind of fibre-reinforced cement hollow plate is characterized in that:

(1). inner is that nest polygon (Fig. 4) or cellular hexagon (Fig. 3) surface are the two-layer thin walled fiber cement sheet material that is composited.

(2). inner nest shape surface can have plastic foamed release liner material (3).

(3). fibrous material can be alkali resistant glass fiber, polypropylene fibre, high elastic modulus vinylon fibre or steel fibre.

2, a kind of manufacture method of fibre reinforced cement cored slab is characterized in that:

(1). on core (2), coat releasing agent or put the release materials of making by macromolecular material (3).

(2). be distributed in the mould (1.2.4) that has honeycomb or other nest shape closely knit with top roller (7) roll-in by following shake table (5) vibration with cement mortar and fibrous material.

(3). become semi-finished product after the demoulding maintenance.

(4). be distributed into template (9) by cement mortar and fleece again and upward be connected with semi-finished product (12) behind the vibratory compaction, treat to be bonded into finished product after the maintenance.

3, method according to claim 2 is characterized in that:

(1). release materials can be used plastics, and rubber etc. are made the gasket material that uses repeatedly, also can make disposable gasket material by plastic foam material.

(2). fortifying fibre can be independent a kind of fiber and cement coupling, also can be used by the variety classes fiber combinations.

(3) fortifying fibre preferably adopts continuous fiber, perhaps the net that is made into of continuous fiber.