CN1046771A

CN1046771A - Composite chimney

Info

Publication number: CN1046771A
Application number: CN 89102363
Authority: CN
Inventors: 楼明
Original assignee: Haidian District Beijing Hai Sound Computer Software Development Co
Current assignee: Haidian District Beijing Hai Sound Computer Software Development Co
Priority date: 1989-04-24
Filing date: 1989-04-24
Publication date: 1990-11-07

Abstract

Adopt heat-resisting, acid corrosion-resistant, intensity height, nonmetal inorganic composite materials that cost is low to make the chimney of domestic briquet stove.This composite chimney uses alkali-free, non-twist, no wax glass fabric or high silica glass cloth as reinforcing material, with silicate of soda or/and potassium silicate aqueous solution is made adhesive, make curing compound with ammonium phosphate or ammonium chloride saturated aqueous solution or prodan, make inserts with quartz powder or diabase flour, granite powder, andesite powder, chamotte brick powder, porcelain powder.

Description

Composite chimney

The present invention relates to a kind of chimney of domestic briquet stove.

The chimney of domestic briquet stove in the past generally uses iron sheet to make, the concrete chimney that paper web chimney, glass fiber reinforced plastic chimney, the wire gauze of the enamel chimney is also arranged, handling with fire retardant strengthens.

Enamel chimney cost height, and the antisepsis of enamel can not finely be brought into play in actual the use; The heat-resisting of paper web chimney of handling with fire retardant can not surpass 400 ℃, and acid-resistant corrosion is poor, and be not water-fast; Glass fiber reinforced plastic chimney acid corrosion-resistant, but cost height, serviceability temperature can not be above 600 ℃; The concrete chimney acid-resistant corrosion that wire gauze strengthens is poor, differs serious than the stress rupture that causes greatly by material thermal expansion coefficient, and the operating period is general only one year; Now the most frequently used is the iron sheet chimney, and its thermal conductivity is good, but the cost height, and acid-resistant corrosion is poor, just need more renew in general 1 year.

The objective of the invention is to make a kind of chimney of domestic briquet stove, it is wanted can acid corrosion-resistant, water-fast, heat-resisting, and the intensity height, and thermal conductivity meets instructions for use, but also wants cost low, and recoverability is good, and the operating period is long.

For achieving the above object, the present invention adopts specific glass fiber as reinforcing material, the sizing material that employing is made up of specific adhesive, inserts, curing compound is as moulding material, makes composite chimney through glue, gluing, Wrapping formed, dry, the demoulding, drying, operation such as be heating and curing.Gluing can be dip-coating, brushing, spraying, preferably dip-coating.Wrapping formed can be manual the winding or the machine winding.

Specific glass fabric is alkali-free, non-twist, no wax glass fabric or high silica glass cloth, and thickness can be 0.14～0.5 millimeter, preferably 0.22～0.4 millimeter.Should through processing in 6 minutes, also can not carry out any surfacing when using alkali-free, non-twist, no wax glass fabric at 350～450 ℃ before using, directly use.

During sizing material was formed, adhesive adopts silicate of soda or/and potassium silicate aqueous solution, and they can use respectively, also can mix use mutually, and modulus can be 2.2～3.2, and preferably 2.4～2.8, proportion can be 1.37～1.55, preferably 1.39～1.42.The weight ratio of adhesive and inserts can be 0.8～2: 1～2.9, preferably 0.6～0.8: 1～1.8.

Curing compound adopts ammonium phosphate or ammonium chloride saturated aqueous solution or prodan.The ammonium phosphate saturated aqueous solution is a kind of heating back curing compound, come mixing water glass can not cause the gel solidification reaction at normal temperatures with it, more convenient on technology, and when high temperature heats, can not produce toxic gas with the finished product that the sizing material of its mix is made, so preferably use ammonium phosphate or ammonium chloride saturated aqueous solution as curing compound.The consumption of ammonium phosphate crystallization is 5～20% of silicate of soda or a potassium silicate aqueous solution weight, preferably 8～14%.Also can not add any curing compound in the sizing material, only solidify with heating means.

Inserts adopts quartz powder or glass-ceramic diabase powder, granite powder, andesite powder, chamotte brick powder, porcelain powder, quartz powder preferably, and particle radius can be 15～75 microns, preferably 20～25 microns.

At first, curing compound and water glass mix is even, add in the inserts, through fully stir, grinding, vacuum refining mud make sizing material.Immerse sizing material with surface treated glass fabric, coiling and molding on mould, the demoulding after dry 24 hours is dried to moisture content＜5%, 270～350 ℃ heat treatment 20 minutes below 60 ℃ below 60 ℃, and cooling back clear water embathes naturally, dries, and gets finished product.Repair liquid can be used silicate of soda or potassium silicate aqueous solution, also the two can be mixed the back and use, and preferably adds the inserts of amount below 60%.

Chimney of the present invention can use instantaneous heat-resisting 900 ℃ for a long time more than 600 ℃.

Compared with the iron sheet chimney, chimney cost of the present invention is low, and the operating period is long, and acid resistance is good, and recoverability is good; Other functional performance simultaneously, for example: aspects such as water-fast, intensity, heat-resisting, heat conduction also can meet the instructions for use of domestic briquet stove chimney.

Embodiment one:

In the water with about 10 milliliters of 9 gram ammonium phosphate addings, fully after the dissolving, with 100 gram moduluses 2.6, the sodium silicate aqueous solution of proportion 1.4 mixes, adding 250 restrained in the quartz powder of 200 mesh sieves and fully stirs, grinds, can use ball mill, sand mill, three-roll grinder, with vacuum pugmill refining twice, make sizing material then.Will be through 6 minutes alkali-free of 350～400 ℃ of heat treatment, non-twist, no wax glass fabric, naturally after the cooling, the dip-coating sizing material, on mould, twined for three weeks, cut off, cut edge is calm with the brush brush, at below 60 ℃ dry 24 hours, the demoulding is being dried to free moisture content＜5% again below 60 ℃, 270～350 ℃ of heat treatment is 20 minutes then, naturally after the cooling, clear water embathes, and dries, and gets finished product.

Embodiment two:

With 100 gram moduluses 2.6, the sodium silicate aqueous solution of proportion 1.4 adds 230 and restrained in the quartz powder of 200 mesh sieves, fully stirs, and grinds, and vacuum pugmill refining twice makes sizing material.With not surface treated alkali-free, non-twist, no wax glass fabric dip-coating sizing material, on mould, twined for three weeks, cut off, cut edge is calm with the brush brush, and drying is 24 hours under 20～60 ℃, the demoulding, under 20～60 ℃, be dried to free moisture content＜5%, 320～350 ℃ of heat treatment half an hour then, cooling naturally, finished product.

Claims

1, use heat-resisting, acid corrosion-resistant, intensity height, lower-cost nonmetal inorganic composite materials to make the chimney of domestic briquet stove.Chimney is made through glue material, gluing, Wrapping formed, dry, the demoulding, drying, operation such as be heating and curing.

2, the described inorganic composite materials of claim 1 uses the glass fabric of alkali-free, non-twist, no wax or high silica glass cloth as reinforcing material, twines two to three layers.The thickness of glass fabric can be 0.14～0.5 millimeter, preferably 0.22～0.4 millimeter.Glass fabric should be handled through 6 minutes at 350～400 ℃ before use; Also can be when using alkali-free, non-twist, no wax glass fabric without any surfacing.

3, the described inorganic composite materials of claim 1 use silicate of soda or/and potassium silicate aqueous solution as adhesive, modulus can be 2.2～3.2, preferably 2.4～2.8.Proportion can be 1.37～1.55, preferably 1.39～1.42.The weight ratio of adhesive and inserts can be 0.8～2: 1～2.9, preferably 0.6～0.8: 1～1.8.

4, the described inorganic composite materials of claim 1 uses quartz powder or glass-ceramic diabase powder, granite powder, andesite powder, chamotte brick powder, porcelain powder as filler, quartz powder preferably, and particle radius can be 15～75 microns, preferably 20～25.

5, claim 1 described inorganic composite materials can use curing compound, also can not use any curing compound and only uses heating means to solidify.The elite curing compound of the present invention can be that ammonium phosphate or ammonium chloride saturated aqueous solution are or/and prodan, preferably ammonium phosphate or ammonium chloride saturated aqueous solution.The consumption of ammonium phosphate crystallization is 5～20% of silicate of soda or a potassium silicate solution weight, preferably 8～14%.

6, claim 1 described gluing can use the method for dip-coating, brushing, spraying, preferably dip-coating.

7, claim 1 described Wrapping formed can be manual twine or machine twines.

8, claim 1 described drying is being carried out below 60 ℃.

9, claim 1 described being heating and curing carried out at 270～350 ℃, is heating and curing 20 minutes time.

10, claim 1 described glue is finished after refining mud through batching, stirring, grinding, vacuum.