common problem-Qingdao Ruida Zhitu Technology Materials Co., Ltd.

How to choose the right aerogel material?

First clarify the three prerequisites of use temperature, application scenarios, and service environment, then match the core indicators of thermal conductivity, temperature resistance grade, and flame retardant performance, select the right product form for construction, and finally balance compliance and full life cycle cost.
When water-based aerogel thermal insulation coatings are used for steel structure roofs, how to balance low thermal conductivity with long-term weathering and pulverization resistance?

Using hydrophobic modified nano-aerogel powder compounded with silica-acrylic emulsion system, the total thickness of the dry film is controlled within 2000-3000 μm, and the thermal conductivity can be less than or equal to 0.04W/(m · K), while meeting the 3000h resistance to artificial aging without powdering.
When spraying polyurea waterproof construction, how to avoid the coating bulging and debonding when the moisture content of the concrete base surface exceeds the standard?

Supporting special epoxy permeable primer for wet base surface + polyurea interface agent, it can adapt to the working condition of moisture content of base surface ≤ 12%, and completely solve the problem of adhesion failure of wet base surface.
How can the heavy anti-corrosion coating in the marine splash area deal with the long-term cathode peeling problem under high salt spray and high initialization conditions?

The use of low surface treatment high zinc epoxy zinc-rich primer + glass flake modified epoxy intermediate paint + fluorocarbon topcoat system can meet the service requirements of ISO 12944 C5-M corrosive environment for more than 15 years.
In the integrated project of waterproof, anti-corrosion and thermal insulation, how to avoid the problem of poor compatibility between the waterproof layer and the subsequent surface layer, and the problem of biting the bottom and desticking?

The epoxy waterproof system based on the same resin is selected to match the anti-corrosion and heat insulation surface layer of the same system to ensure that the adhesion between the layers is ≥ 5MPa, and the problem of inter-layer compatibility failure is solved from the root cause.
What are the core properties and application boundaries of pure polyurea and semi-polyurea in heavy-duty anti-corrosion and waterproof engineering?

Pure polyurea 100% solid contains no VOC, is formed by the reaction of amino-terminated polyether and isocyanate, and its weathering resistance, hydrolysis resistance, tensile elongation at break and chemical medium tolerance far exceed semi-polyurea. It can be used in outdoor, chemical long-term immersion and other harsh scenarios; semi-polyurea contains hydroxyl components and is susceptible to pinholes caused by moisture, which is only suitable for ordinary indoor and non-long-term immersion waterproof projects.
Why can hydrophobic aerogel insulation materials reduce the risk of corrosion under insulation layer (CUI) of petrochemical pipelines at the root?

Aerogel hydrophobicity ≥ 99%, no capillary water absorption effect, can eliminate water accumulation and condensation in the insulation layer, while the thermal conductivity is only 1/5 of the traditional rock wool, and the thickness is reduced by more than 70% under the same insulation effect, which greatly reduces the water vapor penetration path and blocks the core inducement of CUI corrosion from the source.
What are the core causes of pinholes and falling off when spraying polyurea waterproof and anti-corrosion coatings, and what are the most critical prevention and control measures?

The core causes are that the moisture content of the base layer exceeds the standard, the surface treatment does not meet the standard, and the mixing ratio of AB components is deviated; the core prevention and control measures are that the base layer treatment reaches Sa2.5 level, the moisture content is less than or equal to 8%, and the special sealing primer is matched. Special high-pressure spraying equipment is used to ensure 1:1 accurate ratio and constant temperature and pressure construction.
What are the core technical points of waterproof and anti-corrosion integrated design of underground comprehensive pipe gallery?

The composite system of "epoxy sealing primer + sprayed polyurea surface layer" is preferred, the dry film thickness of the water surface is ≥ 1.5mm, the back water surface is ≥ 1.2mm, and the yin and yang angles and expansion joints are treated as reinforcement layers. The materials need to take into account the long-term erosion resistance of groundwater, the follow-up of structural micro-cracks and the resistance to formation settlement and deformation.
What are the core mandatory compliance requirements for polyurea and aerogel waterproof, anti-corrosion and thermal insulation building materials exported to the European Union market?

It is necessary to pass CE certification (in line with CPR building materials regulations), complete the REACH regulation SVHC high-concern substance testing, establish a complete factory production control (FPC) system, and food contact products need to meet EU 10/2011 standards.