38results about How to "Act as a protective layer" patented technology

The invention discloses a modifier for cement concrete and a method for improving the properties of cement concrete. The modifier is silica sol obtained by partial hydrolysis of orthosilicate. The modifying agent can cover the surface of the cement concrete material after it is molded, so as to modify and maintain the cement concrete. The present invention uses a weak acid as a catalyst to partially hydrolyze orthosilicate to form a network-like transparent sol with a small size, which can more easily penetrate into cement, mortar and concrete, and at the same time avoid the destructive effect of strong acid on cement and concrete. The formed protective layer can inhibit the entry and erosion of external corrosive media. The preparation process of the sol is simple, the composition of raw materials is small, the operation is convenient, the cost is low, and the effect is remarkable. It can be widely used in the modification of cement, mortar and concrete materials, and has important significance for the early prevention and later maintenance of cement, mortar and concrete. .

The invention discloses an anti-impact and abrasion hydraulic surface protection block body and a preparation method thereof. The hydraulic surface protection block body comprises a concrete block body and a geopolymer layer covering the surface of the concrete block body, and an adhesive is arranged between the geopolymer layer and the concrete block body. The geopolymer layer is formed by bonding a geopolymer on the concrete block body of the hydraulic surface protection block body by an adhesive through a form of coating. According to the anti-impact and abrasion hydraulic surface protection block body, the anti-wear property of the surface protecting block body is good, and erosion of a water flow to the block body is effectively reduced; the coating is used for replacing a common concrete surface, so that strength of the surface layer of the surface protection block body can be enhanced, and the service life of the surface protection block body is prolonged; the coating material is prepared from a plurality of industrial wastes, so that cost for additionally arranging block protection layers is saved; and the preparation method is simple and is high in safety.

The invention discloses an air spring formulation for an automobile, which is characterized by comprising the following compositions by mass portion: a, the formulation of inner and outer layer rubberof the air spring: 50 to 100 portions of neoprene, 50 to 100 portions of natural rubber, 0.5 to 5 portions of magnesia, 0.5 to 3 portions of stearic acid and 0.5 to 2.5 portions of antiaging agent OD, and b, the formulation of cord fabric rubber of the air spring: 50 to 100 portions of the natural rubber, 0.5 to 2 portions of the stearic acid, 2 to 5 portions of zinc oxide, 0.5 to 3 portions of antiaging agent RD, 0.5 to 2.5 portions of antiaging agent 4020 and 2 to 4 portions of tackifying resin A-90. The air spring manufactured by the formulation can meet the following key technical points:1, the outer layer rubber has excellent ozone aging resistant property, thermal oxygen aging resistant property and flexing cracking resistant property; 2, the cord fabric rubber is closely adhered with nylon cord fabric, and the rubber has excellent thermal oxygen aging resistant property; 3, the layers are closely adhered; 4, the airtightness is excellent; and 5, the service life is long.

The invention discloses a manufacturing method for an automobile sign capable of realizing a radar active cruise function. The manufacturing method includes obtaining a transparent plastic sign by means of manufacturing transparent polycarbonate plastics into a cambered panel with the thickness ranging from 5mm to 6mm by the aid of an injection molding machine; obtaining a transparent plastic sign with a metallic impression and a protecting layer by the aid of UV (ultraviolet) spraying materials; obtaining an indium-plated plastic sign by means of forming an indium metal film on the transparent plastic sign by an ion sputtering method; forming a seamless automobile sign finished product with uniform wall thickness ranging from 7cm to 8cm by means of assembling the indium-plated plastic sign with a plastic base; and finally detecting attenuation and obtaining the qualified automobile sign with the attenuation lower than 2.0DB (decibel) and the capability of realizing the radar active cruise function. The automobile sign has the advantages that the automobile sign has metallic luster, is penetrable by radar microwaves, can realize a function of radar measurement for front and rear automobile distances and the active cruise function, has an appearance decoration function and can meet safety requirements.

The invention provides a banana interplanting method suitable for the Zhangzhou area. It selects Zhangzhou local variety "Tianbao dwarf banana" and the disease-resistant variety "Nantianhuang" for interplanting, and transplants and plants Tianbao dwarf banana in the field in May every year. Cultivate cup seedlings, and then plant Nantianhuang seedlings at 1 / 3 of the distance between two Tianbao bananas in February of the following year, and cut off 1 / 2 of the stems after Tianbao dwarf bananas are harvested, and then The ripe fruits of Nantianhuang will be harvested from March to April of the next year, and then planted in cycles. The interplanting method of the present invention can not only effectively avoid the damage of typhoon and frost, but also allow different banana varieties to be rotated, so that the varieties with longer growth period can also be "harvested once a year", which can increase the economic income of banana farmers, Improve the utilization rate and output rate of land.