CN104891944A - Double-layer composite glass magnesium board with high fireproof grade and preparation method of double-layer composite glass magnesium board - Google Patents

Abstract

The invention discloses a double-layer composite glass magnesium board with a high fireproof grade. The double-layer composite glass magnesium board is characterized by being prepared from the following raw materials in parts by weight: 42-45 parts of light calcined magnesia, 39-41 parts of magnesium chloride hexahydrate, 7-9 parts of forsterite powder, 5-7 parts of tourmaline powder, 4-6 parts of expanded graphite, 1-2 parts of ammonium polyphosphate, 4.5-5 parts of metakaolin, 2.5-3 parts of aluminum dihydrogen phosphate, 1.5-2.5 parts of aluminum silicate fibers, 0.2-0.25 part of a silane coupling agent kh 550, 1.5-2 parts of waterborne polyurethane, 6-8 parts of a 5% polyvinyl alcohol solution, 15-18 parts of thermoplastic phenolic resin, 5-6 parts of 25% urotropine aqueous solution and a proper amount of pure water. According to the double-layer composite glass magnesium board, the forming time is shortened through a modifying process, the process is convenient for industrial control, the components are simple and easily available, and the production efficiency is improved; the prepared glass magnesium board has double-layer effect, is smooth and attractive in surface, high in fireproof grade, safe and non-toxic, and a moisture absorption and deformation problems are solved.

Description

Two-layer compound glass magnesium plate that a kind of fire-protection rating is high and preparation method thereof

Technical field

The present invention relates to decoration material field, two-layer compound glass magnesium plate that particularly a kind of fire-protection rating is high and preparation method thereof.

Background technology

Magnesium oxychloride gelatin material is a kind of air setting material, there is the power saving function of unburned, non-evaporating article of manufacture, magnesium oxychloride material has fabulous physical and mechanical property, it has outstanding fire line and wear resistance, and this material is widely used at construction work, public works, agriculture production, environmental protection industry (epi), mechanical packaging, traffic and field of light industry.Glass magnesium plate is the leading product of magnesium oxychloride gelatin materials industry, it has outstanding fire resistance, fire endurance can reach 1-4 hour, have excellent anti-folding, shock resistance, heat insulation, insulation, anticorrosive and lower shrinkage performance, there is the over-all properties being better than all kinds of artificial board.Glass magnesium plate can to harden consolidation environment more than 15 DEG C; Glass magnesium plate completely not containing asbestos and radioelement, and can receive in industrial and agricultural production and has contaminative waste, and not producing waste water and waste gas in production process, is therefore environmental protection shaped material.It instead of traditional clay brick and woodboard as materials for wall, building template and wrapping plate, is the strategic material of protection soil and timber resources.

Poor water resistance hinders the defect of glass magnesium plate development, and due to the structural performance of hydrated product, sheet material uses and easily returns halogen, warpage, distortion in wet environment, limits use range and the work-ing life of glass magnesium plate.Therefore, improve the water tolerance of glass magnesium plate, have great importance.

Simultaneously using glass magnesium plate as house decorative material time, people incessantly pursue attractive in appearance and require healthy.With tourmaline powder be the glass magnesium plate of additional additives as house decorative material time, the negative ion of release and far infrared rays, obnoxious flavour can not only be eliminated, suspended particle in absorption, gathering, settle air, can also promote blood circulation of human body, improve respiratory system, improve the health-care effecies such as sleep quality; Also there is antibacterial, the bacterium of indoor is grown up, breed and play suppression and elimination effect.Therefore the glass magnesium plate of various modification is more and more subject to the favor of human consumer, is the finishing material of environment protection health.

Summary of the invention

The object of this invention is to provide high two-layer compound glass magnesium plate of a kind of fire-protection rating and preparation method thereof.This product manufacture is convenient to Industry Control, and composition is simple and easy to get, and Stability Analysis of Structures intensity is high, and fire-protection rating is high.

In order to realize object of the present invention, the present invention is by following scheme implementation:

The two-layer compound glass magnesium plate that fire-protection rating is high, is made up of the raw material of following weight part: the urotropine aqueous solution 5-6 that polyvinyl alcohol solution 6-8, novolac resin 15-18 that light calcined magnesia 42-45, magnesium chloride hexahydrate 39-41, forsterite powder 7-9, tourmaline powder 5-7, expanded graphite 4-6, ammonium polyphosphate 1-2, metakaolin 4.5-5, aluminium dihydrogen phosphate 2.5-3, aluminum silicate fiber 1.5-2.5, silane coupling agent kh550 0.2-0.25, aqueous polyurethane 1.5-2, concentration are 5%, concentration are 25%, pure water are appropriate;

The two-layer compound glass magnesium plate that a kind of fire-protection rating of the present invention is high, be made up of following concrete steps:

(1) tourmaline powder is mixed with silane coupling agent kh550, then the pure water being equivalent to mixture 2 times amount is added, pour into after sizing mixing in ball mill and carry out extra-fine grinding, after ball milling, filtering drying obtains ultrafine powder, superfine pulverizing is put in agitator, add polyvinyl alcohol solution and polyaminoester emulsion that concentration is 5% afterwards, be warming up to 40 DEG C, with the Rate Dispersion 30 minutes of 600-800 rev/min, continue to be warming up to 60 DEG C, be incubated after 2-3 hour, use pure water 2 times after being down to room temperature, dry and obtain the tourmalinite fine powder of surface active;

(2) expanded graphite, forsterite powder, light calcined magnesia are crossed 180 mesh sieves formation mixed powders after putting into ball mill for dry grinding 50-60 minute for subsequent use, it is fully dissolved formation solution by the pure water adding 2 times amount in magnesium chloride hexahydrate, leave standstill and put into stirrer after 24 hours, then the tourmalinite fine powder of the surface active that mixed powder, ammonium polyphosphate, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is added successively, stir 10-15 minute with the speed of 500 revs/min, form pasty material;

(3) be poured in the template of forming machine by pasty material, be provided with upper and lower two-layer low alkali glass fiber cloth in forming machine, raw material is between upper and lower two-layer low alkali glass fiber cloth, roll-forming, mold temperature controls at 30 DEG C, and molding time is 25-28 hour, the shaping rear demoulding;

(4) aluminum silicate fiber was pulverized 50 mesh sieves, to stir formation mixture with thermoplastic novolac resin and all the other remaining components, then while hot by mixture coating plate surface after demoulding, under normal temperature, air-set is dried, sent into curing room again, curing room temperature maintains 25-35 DEG C, maintenance 4-6 days, cuts shaping and get final product.

The invention has the beneficial effects as follows: present component proportioning is scientific and reasonable, by the ratio of adjustment magnesium oxide, magnesium chloride hexahydrate, water, and add the refractory materialss such as forsterite powder, expanded graphite as stopping composition, coordinate ammonium polyphosphate, greatly improve the flameproof effect of finished product, reach the grade of not firing; Add the tourmalinite fine powder of surface modification, the dispersiveness of powder can be improved, and then improve the far infrared rays emittance of powder and the release rate of negative ion, there is certain health-care effect, improve the performance of product; Add metakaolin and aluminium dihydrogen phosphate, react in hardened material process, produce the aluminium silicon phosphorus linkage gelling material of indefinite form, these gelling material can fill the space of magnesia oxychloride cement structure, thus inhibit the stripping of the infiltration of water and chlorine, magnesium ion, therefore, it is possible to keep sheet material intensity, crystal formation, mass conservation under the state of immersion; The present invention finally applies one deck novolac resin layer at shaping plate surface, includes aluminum silicate fiber, has the effect that water-tight corrosion-proof is fire-retardant, decreases the erosion of external environment to sheet material, extends work-ing life.

The present invention is by modified technique, and shorten molding time, technique is convenient to Industry Control, and composition is simple and easy to get, improve production efficiency, the glass magnesium plate made has two-layer effect, and surface smoothing is attractive in appearance, and fire-protection rating is high, solve the problem of the moisture absorption, distortion, safety non-toxic, be worth marketing.

Specific embodiments

Below by specific examples, the present invention is described in detail.

The two-layer compound glass magnesium plate that fire-protection rating is high, is made up of the raw material of following weight part (kilogram): the urotropine aqueous solution 5 that the polyvinyl alcohol solution 6 that light calcined magnesia 42, magnesium chloride hexahydrate 39, forsterite powder 7, tourmaline powder 5, expanded graphite 4, ammonium polyphosphate 1, metakaolin 4.5, aluminium dihydrogen phosphate 2.5, aluminum silicate fiber 1.5, silane coupling agent kh550 0.2, aqueous polyurethane 1.5, concentration are 5%, novolac resin 15, concentration are 25%, pure water are appropriate;

The two-layer compound glass magnesium plate that a kind of fire-protection rating of the present invention is high, be made up of following concrete steps:

(1) tourmaline powder is mixed with silane coupling agent kh550, then the pure water being equivalent to mixture 2 times amount is added, pour into after sizing mixing in ball mill and carry out extra-fine grinding, after ball milling, filtering drying obtains ultrafine powder, superfine pulverizing is put in agitator, add polyvinyl alcohol solution and polyaminoester emulsion that concentration is 5% afterwards, be warming up to 40 DEG C, with the Rate Dispersion 30 minutes of 800 revs/min, continue to be warming up to 60 DEG C, be incubated after 2 hours, use pure water 2 times after being down to room temperature, dry and obtain the tourmalinite fine powder of surface active;

(2) expanded graphite, forsterite powder, light calcined magnesia are put into ball mill for dry grinding to cross 180 mesh sieves after 50 minutes to form mixed powders for subsequent use, it is fully dissolved formation solution by the pure water adding 2 times amount in magnesium chloride hexahydrate, leave standstill and put into stirrer after 24 hours, then the tourmalinite fine powder of the surface active that mixed powder, ammonium polyphosphate, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is added successively, stir 10 minutes with the speed of 500 revs/min, form pasty material;

(3) be poured in the template of forming machine by pasty material, be provided with upper and lower two-layer low alkali glass fiber cloth in forming machine, raw material is between upper and lower two-layer low alkali glass fiber cloth, roll-forming, mold temperature controls at 30 DEG C, and molding time is 25 hours, the shaping rear demoulding;

(4) aluminum silicate fiber was pulverized 50 mesh sieves, to stir formation mixture with thermoplastic novolac resin and all the other remaining components, then while hot by mixture coating plate surface after demoulding, under normal temperature, air-set is dried, sent into curing room again, curing room temperature maintains 25-35 DEG C, maintenance 4-6 days, cuts shaping and get final product.

After testing, the performance test results of product of the present invention meets: resistance to impact shock>=25MPa, and dispatch from the factory water ratio≤8%, contract with dry rate≤0.3%, and wet rate≤0.6% that rises, uninflammability meets the requirement of GB8624-1997A level, and density is 1.21g/cm ³.

Claims (2)

1. the two-layer compound glass magnesium plate that a fire-protection rating is high, it is characterized in that, be made up of the raw material of following weight part: the urotropine aqueous solution 5-6 that polyvinyl alcohol solution 6-8, novolac resin 15-18 that light calcined magnesia 42-45, magnesium chloride hexahydrate 39-41, forsterite powder 7-9, tourmaline powder 5-7, expanded graphite 4-6, ammonium polyphosphate 1-2, metakaolin 4.5-5, aluminium dihydrogen phosphate 2.5-3, aluminum silicate fiber 1.5-2.5, silane coupling agent kh550 0.2-0.25, aqueous polyurethane 1.5-2, concentration are 5%, concentration are 25%, pure water are appropriate.

2. the two-layer compound glass magnesium plate that a kind of fire-protection rating is high according to claim 1, is characterized in that, be made up of following concrete steps:

(1) tourmaline powder is mixed with silane coupling agent kh550, then the pure water being equivalent to mixture 2 times amount is added, pour into after sizing mixing in ball mill and carry out extra-fine grinding, after ball milling, filtering drying obtains ultrafine powder, superfine pulverizing is put in agitator, add polyvinyl alcohol solution and polyaminoester emulsion that concentration is 5% afterwards, be warming up to 40 DEG C, with the Rate Dispersion 30 minutes of 600-800 rev/min, continue to be warming up to 60 DEG C, be incubated after 2-3 hour, use pure water 2 times after being down to room temperature, dry and obtain the tourmalinite fine powder of surface active;

(2) expanded graphite, forsterite powder, light calcined magnesia are crossed 180 mesh sieves formation mixed powders after putting into ball mill for dry grinding 50-60 minute for subsequent use, it is fully dissolved formation solution by the pure water adding 2 times amount in magnesium chloride hexahydrate, leave standstill and put into stirrer after 24 hours, then the tourmalinite fine powder of the surface active that mixed powder, ammonium polyphosphate, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is added successively, stir 10-15 minute with the speed of 500 revs/min, form pasty material;

(3) be poured in the template of forming machine by pasty material, be provided with upper and lower two-layer low alkali glass fiber cloth in forming machine, raw material is between upper and lower two-layer low alkali glass fiber cloth, roll-forming, mold temperature controls at 30 DEG C, and molding time is 25-28 hour, the shaping rear demoulding;

(4) aluminum silicate fiber was pulverized 50 mesh sieves, to stir formation mixture with thermoplastic novolac resin and all the other remaining components, then while hot by mixture coating plate surface after demoulding, under normal temperature, air-set is dried, sent into curing room again, curing room temperature maintains 25-35 DEG C, maintenance 4-6 days, cuts shaping and get final product.