CN1084149A

CN1084149A - Inorganic glass fibre reinforced material

Info

Publication number: CN1084149A
Application number: CN 92108551
Authority: CN
Inventors: 钟家根
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-09
Filing date: 1992-09-09
Publication date: 1994-03-23

Abstract

A kind of inorganic glass fibre reinforced material, its proportioning raw materials is: magnesium oxide 40～55% (by weight percentage), magnesium chloride solution (degree Beaume 25～30) 30～35%, quartz sand 4～13%, gypsum 10～13%, commercial sulphuric acid 0.2～0.4% and an amount of medium alkali fiber cloth.The product that uses this material to make need not to heat cure under pressure typing, and after 2～3 hours, get final product the demoulding, maintenance 20～28 days routinely again.It saves the energy, work efficiency height.Finished product has high intensity, shock strength, anti ageing property and hydrophobic nature.

Description

Inorganic glass fibre reinforced material

The invention relates to material of construction, particularly about using glass fibre enhanced magnesia oxychloride cement.

The seventies, with China's industrial development, the packing of many industrial goods has consumed a large amount of timber.For this reason, bamboo reinforcement, reed muscle magnesite wood chip cement products appear.After, the exploitation with glass fibre develops into a kind of novel material of construction-glass fiber of chlorine, oxygen magnesium cement product again.Its kind has composite floor board, glazed tile, bathtub, airduct, flue etc.This by adding the cement products of glass fibre in magnesium oxide and the magnesium chloride brine as strongthener, but has the attention that light weight, intensity height, advantage shock-resistant, fire-retardant and mechanical workout are subjected to domestic and international construction industry, but this cement products ubiquity hydrophobic anti humility performance is poor, after the moisture absorption not only intensity descend significantly, and the shortcoming of generation buckling deformation, especially not anti-atmospheric aging.Therefore, on promoting the use of, be restricted.Many entity and individual have done big quantity research and exploration for improving the glass fiber of chlorine, oxygen magnesium cement product.Think that by " latex material " (China Construction Industry Press, 19 years versions) amount ratio of magnesium oxide and magnesium chloride is advisable between 1.69～2.54; And the researchist of Zhejiang Province's construction material institute thinks that be good between 2.5～3.8.Publication number is that the Chinese patent application (application number 91106605.8) of CN1052819A discloses a kind of magnesium fibre board and manufacture method thereof.This magnesium fibre board is the batch mixing body material with magnesium oxide, magnesium chloride, talcum powder, add again finished weight 1.5%～2%, length is 1～2 centimetre the glass fiber and the swelling perlite powder uniform mixing of finished weight 4～8%: layering adds glasscloth again when making sheet.Above-mentioned body material also need add the aqueous solution and a small amount of sulfuric acid of a spot of oxalic acid, phenol, Sodium Nitrite, ferrous sulfate.This distribution not only must be used multiple starting material, and consumption is uncertain.Particularly clearly do not stipulate as the magnesium oxide of main raw and the consumption of magnesium chloride.Show that according to existing various documents the performance of glass fiber of chlorine, oxygen magnesium cement product depends on its each number of forming fully and decides, and difference is very big.In addition, above-mentioned manufacture method, though can avoid the conventional pressurization typing of heating, its demould time is oversize, and need are more than 14 hours, and this has just influenced the rate of utilization and the production rate of mould.Publication number is that to disclose a kind of be 1.23 magnesium chloride solution, the non-deformable magnesite cement of 0.33～0.67 part of carbonate powder (by weight) preparation with 1 part of magnesia, 0.8 part of proportion in the application for a patent for invention (application number 91106377.3) of CN1054237A, its anti-moisture absorption and aging-resistant performance have been improved, maintenance demoulding after 24 hours again after the pressurization typing but it need be heated.As seen the composition of raw materials of magnesia oxychloride cement not only directly influences the performance of its goods.And determined its technological process.Up to now, Shang Weijian has a kind of glass fiber of chlorine, oxygen and magnesium cement, and its product is being kept on the basis of its original good characteristic, surge moisture-resistant and age inhibiting performance, and the pressure And that need not again the to heat demoulding of just can finalizing the design at short notice.

The object of the present invention is to provide a kind of glass fiber of chlorine, oxygen and magnesium cement material, but this material not only keeps outside the characteristics of its initial quality, intensity height, shock-resistant, fire-retardant and mechanical workout, also increase its hydrophobic moisture-resistant and anti ageing property, and again the product made from it be need not to heat typing, And at short notice with regard to the energy demoulding.

The object of the present invention is achieved like this, a kind of inorganic glass fibre reinforced material that comprises magnesium oxide, magnesium chloride and glass fibre, it is characterized in that also including quartz sand, gypsum and sulfuric acid, the weight ratio of above-mentioned various raw materials is: magnesium oxide 40～55%, magnesium chloride (solution of degree Beaume 25～30) 30～35%, quartz sand 4～13%, gypsum 10～13%, sulfuric acid (industrial concentration) 0.2～0.4%.

The fineness of magnesium oxide, quartz sand and gypsum is generally 120 orders, can be reduced to below 120 orders in case of necessity.The consumption of glass fibre is decided on intensity or thickness that finished product require, preferably uses medium alkali fiber cloth.Medium alkali fiber cloth cuts by product size.

When using inorganic glass fibre reinforced material of the present invention to make various finished product, earlier with after magnesium oxide, magnesium chloride, quartz sand, gypsum and the sulfuric acid uniform mixing form slurry, at the above-mentioned slurry of die surface brushing one deck.Cover on the mould that is coated with slurry the above-mentioned slurry of brushing one deck on above-mentioned medium alkali fiber cloth again, and then cover one deck medium alkali fiber cloth, the above-mentioned slurry of brushing one deck more at last repeatedly until desired thickness with cutting out good medium alkali fiber cloth.Because gypsum and vitriolic effect, finished product needn't heating and pressurizing get final product cure and demold after 2～3 hours.Carry out conventional maintenance 20～28 days then.

The garbage chute batching that embodiment 1. makes Highrise buildingss is as follows: get 120 purpose magnesium oxide, 47～55%(by weight percentage), magnesium chloride solution (degree Beaume 25～30) 30～35%, 120 purpose quartz sands 4～8%, 120 purpose gypsum 10～13%, commercial sulphuric acid 0.2～0.4% uniform mixing, the size and the quantity of medium alkali fiber cloth cut as required.Elder generation's above-mentioned slurry of brushing one deck on mould, one deck medium alkali fiber cloth, one deck slurry directly end till the desired thickness then.The demoulding after 2～3 hours, conventional maintenance 20～28 days again.

Embodiment 2. makes the batching of sheet materials such as wallboards, door-plate: get 120 purpose magnesium oxide, 40～47%(by weight percentage), magnesium chloride solution (degree Beaume 25～30) 30～35%, 120 purpose quartz sands 8～13%, 120 purpose gypsum 10～13%, commercial sulphuric acid 0.2～0.4% uniform mixing, the size and the quantity of medium alkali fiber cloth cut as required.The first above-mentioned slurry of brushing one deck on mould, one deck medium alkali fiber cloth then, one deck slurry directly ends till the desired thickness.The demoulding after 2～3 hours, conventional maintenance 20～28 days again.

Embodiment 3. makes the batching of floor tiles, face brick: get the following magnesium oxide 40～50%(of 120 orders or 120 orders by weight percentage), magnesium chloride solution (degree Beaume 25～30) 30～35%, 80 orders or following quartz sand 8～13%, 120 orders or following gypsum 10～13%, commercial sulphuric acid 0.2～0.4% uniform mixing of 120 orders of 80 orders, medium alkali fiber cloth size and quantity cut by required.Elder generation's above-mentioned slurry of brushing one deck on mould, one deck medium alkali fiber cloth, one deck slurry end till the desired thickness then.The demoulding after 2～3 hours, conventional maintenance 20～28 days again.

The goods sample that uses inorganic glass fibre reinforced material of the present invention after measured, its bending strength reaches 72MPa, shock strength reaches 32.4KJ/m ², 250 hours no changes of artificial accelerated aging, the buckling deformation of getting damp does not absorb water.The sizing and solidifying of product be need not pressurized, heated saved energy and shortened demould time greatly, improved work efficiency, reduced cost.

Claims

1, a kind of inorganic glass fibre reinforced material that comprises magnesium oxide, magnesium chloride and glass fibre is characterized in that the weight ratio that also includes quartz sand, gypsum and sulfuric acid, above-mentioned various raw materials is: magnesium oxide 40～55% (by weight percentage), magnesium chloride solution (degree Beaume 25～30) 30～35%, quartz sand 4～13%, gypsum 10～13%, commercial sulphuric acid 0.2～0.4%.

2, inorganic glass fibre dimension strongthener according to claim 1, the fineness that it is characterized in that described magnesium oxide, quartz sand and gypsum is at 120 orders or below 120 orders.

3, inorganic glass fibre reinforced material according to claim 1 is characterized in that preferably medium alkali fiber cloth of described glass fibre.Above-mentioned medium alkali fiber cloth layering is folded in by in the mixed uniformly slurry of described magnesium oxide, magnesium chloride solution, quartz sand, gypsum and commercial sulphuric acid.