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34results about How to "Good business effect" patented technology

Preparation method of polybenzoxazine-imine glass fiber cloth laminated board

The invention discloses a preparation method of a polybenzoxazine-imine glass fiber cloth laminated board. The preparation method is characterized by comprising the steps of adding an amine compound, maleic anhydride and 3/4 of methylbenzene into a reactor, heating to 70-95 DEG C to react for 1-2h, cooling to 5-25 DEG C, adding a water solution of formaldehyde, controlling the temperature to not be higher than 30 DEG C to react for 0.5-2h, adjusting the pH value to 6-8, adding a phenolic compound and residual benzene, reacting at the temperature of 80-100 DEG C for 2-5h, standing for layering, adding acetone into an organic phase, stirring and mixing to obtain a benzoxazine-maleic amide resin solution; mixing the benzoxazine-maleic amide resin solution and an accelerant to prepare an adhesive; coating the adhesive on glass fiber cloth through a glue spreader, roasting to obtain pre-impregnated glass fiber cloth, tailoring the pre-impregnated glass fiber cloth to the size required by a product, and carrying out hot press molding to obtain the polybenzoxazine-imine glass fiber cloth laminated board. The polybenzoxazine-imine glass fiber cloth laminated board is suitable for being used as an electrical insulating material or structural composite in the fields such as motors, electrical appliances, military industry, petroleum and the like.
Owner:SICHUAN DONGFANG INSULATING MATERIAL

Precured glass fiber cloth impregnation material and preparation method thereof

ActiveCN103497349AReduce defects such as brittlenessImprove performanceGlass fiberAdhesive
The invention discloses a precured glass fiber cloth impregnation material. The precured glass fiber cloth impregnation material is characterized by being composed of a glass fiber cloth which is coated with adhesive by adopting a gluing machine and baked by a baking tunnel of the gluing machine, wherein the adhesive is formed by mixing 1000 parts by mass of benzoxazine-maleic amide resin solution, 15-30 parts by mass of linear isophthalic type unsaturated polyester, 0.2-2 parts by mass of an accelerant and 0.1-0.3 part by mass of initiator. A preparation method of the precured glass fiber cloth impregnation material comprises the following steps: preparing a benzoxazine-maleic amide resin solution, preparing adhesive, coating the adhesive on the glass fiber cloth by adopting a gluing machine, baking the glass fiber cloth by virtue of a baking tunnel of the gluing machine, and rolling, thus the precured glass fiber cloth impregnation material is obtained. By adopting the preparation method of the precured glass fiber cloth impregnation material, the storage time of a benzoxazine resin-based precured glass fiber cloth impregnation material can be prolonged, the fragility of a post processing product is reduced, and stratification is reduced; the precured glass fiber cloth impregnation material can be applied to mould pressing, laminating and rolling of an electric insulation or structural composite material.
Owner:SICHUAN DONGFANG INSULATING MATERIAL

A kind of precured glass fiber cloth impregnation material and preparation method thereof

ActiveCN103497349BReduce defects such as brittlenessImprove performanceGlass fiberAdhesive
The invention discloses a precured glass fiber cloth impregnation material. The precured glass fiber cloth impregnation material is characterized by being composed of a glass fiber cloth which is coated with adhesive by adopting a gluing machine and baked by a baking tunnel of the gluing machine, wherein the adhesive is formed by mixing 1000 parts by mass of benzoxazine-maleic amide resin solution, 15-30 parts by mass of linear isophthalic type unsaturated polyester, 0.2-2 parts by mass of an accelerant and 0.1-0.3 part by mass of initiator. A preparation method of the precured glass fiber cloth impregnation material comprises the following steps: preparing a benzoxazine-maleic amide resin solution, preparing adhesive, coating the adhesive on the glass fiber cloth by adopting a gluing machine, baking the glass fiber cloth by virtue of a baking tunnel of the gluing machine, and rolling, thus the precured glass fiber cloth impregnation material is obtained. By adopting the preparation method of the precured glass fiber cloth impregnation material, the storage time of a benzoxazine resin-based precured glass fiber cloth impregnation material can be prolonged, the fragility of a post processing product is reduced, and stratification is reduced; the precured glass fiber cloth impregnation material can be applied to mould pressing, laminating and rolling of an electric insulation or structural composite material.
Owner:SICHUAN DONGFANG INSULATING MATERIAL

Composite light building block and preparation method thereof

The invention relates to a composite light building block and a preparation method thereof. The standard is 60*15*25cm, and the weight of the building block is 18kg. The building block is prepared by the following materials by weight percent and the slurry comprises brine: 50wt% of industrial magnesium chloride hexahydrate, gas generation agent: 0.01wt% of hydrogen peroxide and calcium hypochlorite; light burnt powder: 25wt% of light burnt magnesium oxide 85 powder, foam stabilizer: 0.001wt% of sodium dodecyl benzene sulfonate, filler: 20wt% of expandable pearlite sand, an adjusting agent: the balance of sodium hydroxide or citric acid. The invention can improve the processing property, increases the slurry flowability, is easy to cast in forming, has short production period and low manufacturing cost, increases the activity, enhances the impermeability and post strength, reduces dry shrinkage, and prevents cracking. The composite light building block has the advantages of light weight, high strength, small volume density, low heat conduction coefficient, heat insulation, sound insulation, fire prevention, heat isolation, freezing and melting resistance, little dry shrinkage, and the like. By using the gas-added building block to replace the traditional bearing building block as the building wall filling material, the self weight of the building structure is decreased, the foundation burden is reduced, and the energy and material are saved.
Owner:黄丹平
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