Flame retardant synthetic roofing thatch waterproof artificial Nipa Palm thatch board product details
Customization: Available
Material: High density polyethylene
Color: Custom
Research on properties and application of flame retardant synthetic roofing thatch waterproof artificial Nipa Palm thatch board
Abstract: This paper focuses on the flame retardant synthetic roof thatch waterproof artificial Nipa palm thatch board, describes its raw material characteristics, preparation technology, flame retardant and waterproof performance test methods and results, and discusses the practical application advantages and prospects in the field of construction. Through systematic research, the aim is to provide theoretical basis for the promotion and further optimization of the new building materials.
First, flame retardant synthetic roof thatch waterproof artificial Nipa palm thatch board introduction
With the diversification of architectural styles and the simultaneous improvement of the demand for natural beauty, fire protection and waterproof, the traditional natural thatch roof is gradually limited due to problems such as flammable and poor durability. Flame retardant synthetic roofing thatch waterproof artificial Nipa palm thatch board came into being, it not only simulates the appearance of natural thatch, but also has excellent flame retardant and waterproof properties, providing an innovative solution for modern building roofing materials.
Second, flame retardant synthetic roof thatch waterproof artificial Nipa palm thatch board raw materials and preparation process
Raw material characteristics
Artificial fiber: The selection of high-strength, age-resistant polyester fiber or polypropylene fiber as the basic skeleton, giving the thatch board good toughness and mechanical strength, to ensure that it is not easy to break and deformation under different climatic conditions.
Flame retardants: Environmentally friendly halogen or phosphorous flame retardants are uniformly dispersed in the material system through chemical bonding or physical blending. Halogenated flame retardants release hydrogen halide at high temperature to inhibit the combustion chain reaction. Phosphorous flame retardants promote the carbonization of the surface of the material to form a thermal insulation layer.
Waterproof additives: such as silane coupling agent, silicone water repellent agent, etc., can react with the hydroxyl group on the surface of the fiber, reduce the surface energy of the material, so that the water droplets on the surface of the thatch board ball roll, prevent water penetration.
Pigment: In order to accurately simulate the color of Nipa palm thatch, the weather-resistant inorganic pigment is selected and prepared by special color matching process to ensure that the long-term outdoor use will not fade.
Preparation technology
Mixing: Put the quantitative fiber, flame retardant, waterproof additives, pigments into the high-speed mixer, fully stir 30-60 minutes to ensure that the components are evenly dispersed.
Molding: Using hot pressing or extrusion molding technology. Under a certain temperature (150-200 ℃) and pressure (5-10MPa), the material is fused and bonded to form a predetermined shape of thatch slab; Extrusion molding is through the screw extruder continuous extrusion molding, after cooling shape to obtain long strips of thatch board, and then cut to the required size.
Post-treatment: The surface of the moulded thatch board is polished, and the secondary waterproof treatment is carried out to improve the surface smoothness and waterproof durability, and finally the product is packaged.
Three, flame retardant synthetic roof thatch waterproof artificial Nipa palm thatch board flame retardant performance test and analysis
Test method
Vertical combustion test method (UL 94) and Limiting oxygen index test method (LOI) were used. In the vertical combustion test, the standard size thatch board sample was fixed vertically, and the fire source was removed after burning the bottom of the Bunsen burner for 10 seconds, and the flame spreading time, self-extinguishing time and combustion dripping were observed. Limiting oxygen index test In the nitrogen and oxygen mixed air environment, gradually adjust the oxygen content until the sample can just maintain combustion, then the oxygen content is the LOI value.
Test result
The vertical combustion test shows that the flame spreading height of the high-quality flame retardant synthetic thatch board does not exceed 50mm, the self-extinguishing time is within 10 seconds, and no combustion droplet ignites the filter paper below, meeting the UL 94 V-0 standard.
The limiting oxygen index test shows that its LOI value is generally between 30%-35%, much higher than that of common flammable materials (LOI < 21%), indicating that a higher oxygen content is required in the air to maintain combustion and has good flame retardancy.
Fourth, waterproof performance test and analysis
Test method
Static water contact Angle test: Using a contact Angle measuring instrument, water droplets are placed on the surface of the thatch board to measure the tangent Angle between water droplets and the surface of the material. The larger the Angle, the stronger the hydrophobicity.
Water permeability test: According to standard ASTM E96, the sample is fixed on the water permeability test device, one side contacts simulated rain, the other side collects permeable water, and the water permeability is calculated by measuring the unit time permeable water.
Test result
Static water contact Angle up to 130° -150 °, water droplets on the surface is approximately spherical, roll quickly, showing excellent lotus effect, waterproof initial effect is significant.
The water permeability test results show that in the continuous 24-hour simulated rainstorm sprinkling (rainfall intensity 200mm/h), the water permeability is lower than 0.05%, effectively blocking the infiltration of rain and ensuring that the space under the roof is dry.
Five, flame retardant synthetic roof thatch waterproof artificial Nipa palm thatch board in the application of advantages in construction
Aesthetic and style match
Realistic simulation of Nipa palm thatch natural form and texture, to create a rich tropical or pastoral atmosphere for holiday villas, seaside homestays, theme park buildings, etc., in line with the pursuit of natural, leisure style of architectural design needs.
Safe and durable
The fire-retardant performance greatly reduces the fire risk, especially in the fire-sensitive areas such as the surrounding mountains and the renovation of ancient buildings; Waterproof and age-resistant roofing materials can last up to 10-15 years, reducing frequent replacement costs and maintenance efforts.
Easy to install
Lightweight design (30%-50% less weight per unit area than natural thatch), easy to transport and manual installation, can be fixed on the roof base by simple clamp or gluing, shorten the construction period.
6. Conclusion and Prospect
Flame retardant synthetic roofing thatch waterproof artificial Nipa palm thatch board with its excellent flame retardant, waterproof, beautiful and practical properties, in the field of modern building roofing materials show great potential. Although the current research has achieved phased results, the future still needs to further optimize the synergistic effect of flame retardants and water repellents, reduce material costs, expand the diversity of color and style, etc., in order to promote its wide application in more architectural scenes, and achieve the perfect integration of architectural function and aesthetics
