CN105060838A - Lightweight mildew-resistant composite glass magnesium board and preparation method thereof - Google Patents

Abstract

The invention discloses a lightweight mildew-resistant composite glass magnesium board. The board is characterized by being prepared from the following raw materials by weight: 42 to 45 parts of light calcined magnesia, 36 to 40 parts of magnesium chloride hexahydrate, 5 to 6.5 parts of tourmalinite powder, 12 to 14 parts of sawdust, 1 to 2 parts of polyurethane foamed particle, 2 to 3 parts of bamboo fiber, 3 to 4 parts of redispersible rubber powder, 4.5 to 5 parts of metakaolin, 2.5 to 3 parts of aluminum dihydrogen phosphate, 0.2 to 0.25 part of a silane coupling agent kh550, 1.5 to 2 parts of aqueous polyurethane, 5.5 to 7.5 parts of a polyvinyl alcohol solution with a concentration of 5%, 15 to 18 parts of thermoplastic phenolic resin, 5 to 6 parts of an aqueous urotropine solution with a concentration of 25%, 1.5 to 2.5 parts of antimonony oxide and a proper amount of pure water. According to the invention, a lightweight filling material is employed, so the board has reduced self-weight and obtains water-proof, antibacterial and anti-mildew properties; and due to protection of an outer resin layer, the board has improved anti-corrosion performance, flexibility and flexural strength.

Description

A kind of lightweight mildew-resistant composite glass magnesium board and preparation method thereof

Technical field

The present invention relates to decoration material field, particularly a kind of lightweight mildew-resistant composite glass magnesium board 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 a kind of lightweight mildew-resistant composite glass magnesium board and preparation method thereof.The present invention, by adjusting component proportioning, adds the composition such as sawdust, polyurethane foam particle as filler, reduces the deadweight of sheet material; Add tourmaline powder, bamboo fibers, cooperatively interact, can not only anion releasing, and also sterilization, anti-mold effect are remarkable.

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

A kind of lightweight mildew-resistant composite glass magnesium board, is made up of the raw material of following weight part: urotropine aqueous solution 5-6, antimonous oxide 1.5-2.5 that polyvinyl alcohol solution 5.5-7.5, novolac resin 15-18 that light calcined magnesia 42-45, magnesium chloride hexahydrate 36-40, tourmaline powder 5-6.5, sawdust 12-14, polyurethane foam particle 1-2, bamboo fibers 2-3, re-dispersible glue powder 3-4, metakaolin 4.5-5, aluminium dihydrogen phosphate 2.5-3, silane coupling agent kh5500.2-0.25, aqueous polyurethane 1.5-2, concentration are 5%, concentration are 25%, pure water are appropriate;

A kind of lightweight mildew-resistant composite glass magnesium board of the present invention, 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) bamboo fibers, 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, add re-dispersible glue powder while stirring, the tourmalinite fine powder adding the surface active that mixed powder, polyurethane foam particle, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is continued after stirring, 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) stir antimonous oxide and thermoplastic novolac resin and all the other remaining components formation mixture, 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: the present invention is by adjusting the proportioning of light calcined magnesia and magnesium chloride hexahydrate and adding the admixture such as metakaolin and aluminium dihydrogen phosphate, can react in the process of sheet material sclerosis, 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, sheet material intensity, crystal formation, mass conservation under the state of immersion can be kept, thus improve water resisting property.

The present invention adopts light filler, and while reducing sheet material deadweight, waterproof, antibacterial, mildew-resistant, simultaneously due to the protection of appearance resin layer, improve non-corrosibility and the snappiness of product, further increase the folding strength of product.

Specific embodiments

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

A kind of lightweight mildew-resistant composite glass magnesium board, is made up of the raw material of following weight part (kilogram): the urotropine aqueous solution 5 that the polyvinyl alcohol solution 5.5 that light calcined magnesia 42, magnesium chloride hexahydrate 36, tourmaline powder 5, sawdust 12, polyurethane foam particle 1, bamboo fibers 2, re-dispersible glue powder 3, metakaolin 4.5, aluminium dihydrogen phosphate 2.5, silane coupling agent kh5500.2, aqueous polyurethane 1.5, concentration are 5%, novolac resin 15, concentration are 25%, antimonous oxide 1.5, pure water are appropriate;

A kind of lightweight mildew-resistant composite glass magnesium board of the present invention, 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 revs/min, continue to be warming up to 60 DEG C, be incubated after 3 hours, use pure water 2 times after being down to room temperature, dry and obtain the tourmalinite fine powder of surface active;

(2) bamboo fibers, 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, add re-dispersible glue powder while stirring, the tourmalinite fine powder adding the surface active that mixed powder, polyurethane foam particle, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is continued after stirring, 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) stir antimonous oxide and thermoplastic novolac resin and all the other remaining components formation mixture, 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 1.10g/cm ³.

Claims (2)

1. a lightweight mildew-resistant composite glass magnesium board, it is characterized in that, be made up of the raw material of following weight part: light calcined magnesia 42-45, magnesium chloride hexahydrate 36-40, tourmaline powder 5-6.5, sawdust 12-14, polyurethane foam particle 1-2, bamboo fibers 2-3, re-dispersible glue powder 3-4, metakaolin 4.5-5, aluminium dihydrogen phosphate 2.5-3, silane coupling agent kh5500.2-0.25, aqueous polyurethane 1.5-2, concentration is the polyvinyl alcohol solution 5.5-7.5 of 5%, novolac resin 15-18, concentration is the urotropine aqueous solution 5-6 of 25%, antimonous oxide 1.5-2.5, pure water is appropriate.

2. a kind of lightweight mildew-resistant composite glass magnesium board 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) bamboo fibers, 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, add re-dispersible glue powder while stirring, the tourmalinite fine powder adding the surface active that mixed powder, polyurethane foam particle, metakaolin, aluminium dihydrogen phosphate and step (1) obtain is continued after stirring, 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) stir antimonous oxide and thermoplastic novolac resin and all the other remaining components formation mixture, 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.