CN107988851A - Soluble ceramic fiber plate and preparation method thereof - Google Patents

Abstract

The invention discloses a soluble ceramic fiber board and a preparation method thereof. The board is pressed by a fiber blanket, and the fiber blanket includes 85-90wt% of soluble fiber, 2-4wt% of heat-insulating filler, and 3-5wt% of refractory filler %, inorganic binder 3-5wt%, organic binder 0.5-1.5wt%. The soluble ceramic fiber sheet material of the invention is harmless to human body, has small bulk density, low thermal conductivity, high fireproof grade, embossing can be realized, and the production process is simple.

Description

Soluble ceramic fiber plate and its preparation method

technical field

The invention relates to a fireproof board, in particular to an environmentally friendly soluble ceramic fiber board and a preparation method thereof.

Background technique

Traditional thermal insulation materials such as glass wool, mineral wool, and aluminum silicate ceramic fiber are not only chemically inert but also carcinogenic fiber materials. With the development of my country's industry, the amount of thermal insulation materials is increasing, and its impact on the environment must be considered. The new version of the national standard for fire doors GB12955-2008 puts forward stricter requirements on the core board of fire doors: first, the material of the core board must reach the A1 level of combustion performance of GB 8624. Up to 3 hours; the use of environmentally friendly materials is required to reach the ZA2 level of smoke toxicity hazard classification stipulated in GB/T20285. If the filling material in the door leaf should be non-toxic and harmless to the human body, it should be fire-proof and heat-insulating materials. It is forbidden to use resin-containing materials such as rock wool and aluminum silicate to reduce the impact on human health. At present, most domestic enterprises choose non-fiber heavy boards, such as expanded perlite boards, magnesium oxide perlite boards, etc. Embossing can only be engraved, the processing technology is complicated, and the dust pollution on the production site is serious, and the environmental protection is poor.

With the increasingly urgent demand for flexible core panels of domestic fire door enterprises and the increasing requirements of new national standards, it is urgent and important to develop environmentally friendly fiber fire door core panels that are flexible, low bulk density, high fire rating, and embossable. subject.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a soluble ceramic fiber plate and a preparation method thereof to solve the above-mentioned problems in the prior art. High grade, embossing possible, simple production process, less pollution in the production process.

In order to achieve the above object, the present invention provides the following scheme: a soluble ceramic fiber plate, the plate is formed by pressing a fiber blanket, the fiber blanket includes 85-90wt% of soluble fiber, 2-4wt% of heat insulating filler, The refractory filler is 3-5wt%, the inorganic binder is 3-5wt%, and the organic binder is 0.5-1.5wt%.

The soluble ceramic fiber plate of the present invention, wherein the soluble fiber is calcium magnesium silicate ceramic fiber or magnesium silicate ceramic fiber or calcium silicate fiber.

In the soluble ceramic fiber plate of the present invention, the heat insulating filler is a lightweight heat insulating material.

In the soluble ceramic fiber plate of the present invention, the lightweight heat insulating material is expanded perlite, expanded vermiculite or expanded graphite.

In the soluble ceramic fiber plate of the present invention, the refractory filler is basalt or basalt fiber or zirconia.

In the soluble ceramic fiber plate of the present invention, the inorganic binder is silica sol.

In the soluble ceramic fiber plate of the present invention, the organic binder is a silicone modified resin.

A preparation method of a soluble ceramic fiber plate of the present invention comprises the following steps: (1) adding 85-90wt% of soluble fiber, 2-4wt% of heat insulating filler, 3-5wt% of refractory filler, 3-5wt% of inorganic binder 5wt% and 0.5-1.5wt% organic binder are mixed and stirred to make a slurry, (2) forming and drying the above slurry to make a fiber blanket, and (3) cutting the above fiber blanket as required.

The preparation method of the soluble ceramic fiber sheet of the present invention, wherein, in the step (2), the fiber blanket is made by melting and spinning.

The soluble ceramic fiber sheet of the present invention is formed in the step (2) by fourdrinier drawing method, and dried by a disc continuous dryer or a microwave continuous dryer.

Compared with the prior art, the present invention has achieved the following technical effects:

Since the soluble ceramic fiber sheet of the present invention is formed by pressing the fiber blanket, the main component of the fiber blanket is soluble fiber, which has excellent fire resistance, mechanical properties and good biodegradability, and is extremely harmful to the human body Heat insulation filler and refractory filler are added, so the soluble ceramic fiber board made has good fire resistance and heat insulation performance, and the combustion performance reaches A1 level, and the compressive strength of the fire door filled with 50mm plate is ≥0.10MPa, reaching A1.5 class A Door standard, no formaldehyde and other toxic gases are released during combustion, and the toxicity of smoke produced reaches ZA2 level or above, which is safer, and the processing technology is simple. The product can be embossed to make the product more beautiful and diverse, and the pollution in the processing process is small.

The soluble fiber in the soluble ceramic fiber plate of the present invention adopts calcium magnesium silicate ceramic fiber, which not only has excellent fire resistance, mechanical properties and good biodegradability, but is a potential substitute for traditional thermal insulation materials , and the raw materials for preparing calcium-magnesium silicate ceramic fibers are very rich, and have the prerequisites for mass production of calcium-magnesium silicate ceramic fibers, so that the soluble ceramic fiber sheet of the present invention can be widely promoted and widely used in industrial heat preservation, fire protection, and civil external wall heat preservation and other fields, with significant economic and social benefits.

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

A soluble ceramic fiber board according to the invention is formed by pressing a fiber blanket, and the fiber blanket includes 88wt% of calcium magnesium silicate ceramic fiber, 4wt% of expanded perlite as a lightweight heat-insulating filler, 4wt% of refractory filler basalt, and inorganic binder silicon Sol 3wt%, organic binder silicone modified resin 1wt%, wherein basalt is a natural inorganic mineral, plays the role of vitrified agent, increases the refractory temperature and enhances the mechanical properties of the fiber blanket.

Embodiment two

A soluble ceramic fiber board according to the invention is formed by pressing a fiber blanket, the fiber blanket includes 85.5wt% of magnesium silicate ceramic fiber, 3wt% of expanded vermiculite as a lightweight heat-insulating filler, 5wt% of refractory filler basalt fiber, and an inorganic binder Silica sol 5wt%, organic binder organosilicon modified resin 1.5wt%, wherein basalt fibers are artificially processed inorganic minerals, play the role of vitrified agent, increase the refractory temperature and enhance the mechanical properties of the fiber blanket.

Embodiment Three

A soluble ceramic fiber plate of the present invention is formed by pressing a fiber blanket, and the fiber blanket includes 90wt% of magnesium silicate ceramic fiber, 2wt% of expanded vermiculite for lightweight heat-insulating filler, 3wt% of refractory filler basalt fiber, inorganic binder silicon Sol 4.5wt%, organic binder silicone modified resin 0.5wt%.

Soluble fiber is a refractory fiber composed of SiO ₂ , CaO and MgO. It has a short half-disappearance period (12 days) in the human body and has good biosolubility. The soluble fiber in the soluble ceramic fiber plate of the present invention can also be used to remove Calcium magnesium silicate ceramic fiber, calcium silicate fiber other than magnesium silicate ceramic fiber, expanded graphite can also be used for light heat insulating filler besides expanded vermiculite and expanded perlite, and refractory filler can also be used besides basalt and basalt fiber Zirconium dioxide, the soluble ceramic fiber plate made of the above materials has a bulk density of no more than 220kg/m, has good fire resistance and heat insulation performance, and the combustion performance reaches A1 level, and the fire door filled with 50mm plate has a compressive strength ≥ 0.10MPa , reaching A1.5 Class A door standard, no toxic gas such as formaldehyde is released during combustion, and the toxicity of smoke production reaches ZA2 level or above, which is safer. At the same time, the soluble ceramic fiber board of the present invention can not only be used as a fire door core board, but also be used as the core board of other fire prevention facilities.

The preparation method of the soluble ceramic fiber plate of the present invention comprises the following steps:

(1) 85-90wt% of soluble fiber, 2-4wt% of thermal insulation filler, 3-5wt% of refractory filler, 3-5wt% of inorganic binder, and 0.5-1.5wt% of organic binder are mixed and stirred to make a slurry,

(2) The above slurry is formed by fourdrinier method and dried by a disc continuous dryer or a microwave continuous dryer to form a plate. Specifically, Majieke disc continuous drying equipment or Boda microwave continuous drying can be used equipment.

(3) Cutting the above-mentioned sheet material into the standby sheet material of required size as required;

(4) After the quality inspection, put the above-mentioned ready-to-use plates into storage for use.

The soluble ceramic fiber board made by the above method has a bulk density of no more than 220kg/m, has good fire resistance and heat insulation performance, and the combustion performance reaches A1 level. The fire door filled with 50mm board has a compressive strength ≥ 0.10MPa, reaching A1. 5 Class A door standard, no formaldehyde and other toxic gases are released during combustion, and the toxicity of the smoke produced reaches ZA2 level, which is safer, and the patterns can be pre-pressed, which can be cut arbitrarily according to needs, and can be quickly assembled with fire door frames or other fire protection facilities Convenient and non-halogenated, it can be used not only as a fire door core board, but also for other fire protection facilities.

In the present invention, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention; meanwhile, for those of ordinary skill in the art, according to the present invention The idea of the invention will have changes in the specific implementation and scope of application. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. A kind of 1. soluble ceramic fiber plate, it is characterised in that：The plate is formed by tapetum fibrosum compacting, the tapetum fibrosum bag Include soluble fibre 85-90wt%, thermal insulating filling 2-4wt%, fire resistant infilling 3-5wt%, inorganic binder 3-5wt%, You Jijie Mixture 0.5-1.5wt%.
2. 2. soluble ceramic fiber plate according to claim 1, it is characterised in that：The soluble fibre uses calcium silicates Magnesium ceramic fibre or magnesium silicate ceramic fiber or ca silicate fibre.
3. 3. soluble ceramic fiber plate according to claim 1, it is characterised in that：The thermal insulating filling is lightweight heat-proof Material.
4. 4. soluble ceramic fiber plate according to claim 3, it is characterised in that：The light heat-insulating material is expansion Perlite or expanded vermiculite or expanded graphite.
5. 5. soluble ceramic fiber plate according to claim 1, it is characterised in that：The fire resistant infilling for basalt or Basalt fibre or zirconium dioxide.
6. 6. soluble ceramic fiber plate according to claim 1, it is characterised in that：The inorganic adhesive is molten for silicon Glue.
7. 7. soluble ceramic fiber plate according to claim 1, it is characterised in that：The organic bond is organosilicon Modified resin.
8. 8. the preparation method of any soluble ceramic fiber plates of the claims 1-7, it is characterised in that including under State step：

   (1) by soluble fibre 85-90wt%, thermal insulating filling 2-4wt%, fire resistant infilling 3-5wt%, inorganic binder 3-5wt%, Slurries are made by mixing in organic bond 0.5-1.5wt%,

   (2) above-mentioned slurries is molded and is dried and tapetum fibrosum be made,

   (3) above-mentioned tapetum fibrosum is cut as needed.
9. 9. the preparation method of soluble ceramic fiber plate according to claim 8, it is characterised in that：In the step (2) tapetum fibrosum is made in the method for getting rid of silk in using melting.
10. 10. the preparation method of soluble ceramic fiber plate according to claim 8, it is characterised in that：In the step (2) fourdrinier wire wet-process moulding is used in, drying is completed using disc type continuous drier or microwave type continuous drier.