What is the principle of the flame retardant for PVC wood-plastic composites? Is it a halogen-based system or an intumescent system?

Social Benefits 

1. Huge consumption of steel, bamboo and wood in China's building formwork industry 

With the continuous launch of various engineering construction projects in China, the formwork industry has developed rapidly. It is expected that from 2011 to 2012, the average annual growth rate of the production scale of China's building formwork industry will be about 15%. By the end of 2012, the output of China's building formwork industry will reach about 220 million square meters. 

2. The consumption of steel and wood in building formwork is astonishing, leading to serious resource waste 

The annual output of newly produced steel formwork in China is 39.7 million square meters. If converted into weight, it is equivalent to the steel consumption of 27 Beijing National Stadiums (Bird's Nest). 

3. Social benefits of wood-plastic building formwork replacing traditional building formwork 

Under the circumstances of China's active response to climate change and vigorous promotion of energy conservation and emission reduction, if materials that can replace steel, bamboo and wood can be used in the building formwork industry, the environmental and social benefits will undoubtedly be enormous. Currently, the market demand for building formwork is over 200 billion yuan. Wood-plastic building formwork is expected to occupy 30% - 50% of the market share in the next 3 to 5 years, with an output value of over 60 billion yuan, and the market prospect is very broad. 

When wood-plastic composites are used as building formwork, the construction efficiency can be greatly improved and the construction time can be shortened. Compared with traditional formwork, the single comprehensive use cost of wood-plastic formwork can be saved by about 30%, and the auxiliary cost can be reduced by about 40%, directly reducing the project construction cost by nearly 5%. 

Development Prospects 

1. High-quality raw materials and scientific formula 

The main raw materials of wood-plastic doors are PVC resin and high-quality wood powder. The PVC resin is of medical grade and from domestic well-known brands, and the wood powder is provided by professional wood companies with high-quality tree species wood powder. After classification, screening, grinding, drying and coating treatment, it ensures that the finished products meet the requirements for raw material quality. In the formula system of wood-plastic doors, a certain proportion of auxiliary materials are added, such as stabilizers, foaming agents, modifiers, etc. All components are mixed according to strict proportions, effectively ensuring the product quality of foamed plates. 

2. Advanced production equipment 

The production equipment, from the mixing system to the extrusion system, is all imported from abroad, at the international leading level, with a high degree of automation. The mixing equipment has the characteristics of accurate batching, uniform mixing and high efficiency, fundamentally ensuring the stability of the products. Since the production of wood-plastic foamed doors has high requirements for foaming extrusion equipment, a high-torque twin-screw extruder is used, and components such as screws and barrels are modified to adapt to the skin formation on the inner and outer surfaces of lignin and uniform foaming, and to avoid phenomena such as the carbonization of wood powder. 

3. Leading thermal transfer technology 

The thermal transfer process is adopted to transfer various patterns onto the extruded plates, giving the products a variety of high-grade tree species wood grain and color. According to the popular varieties in the market, we have designed a variety of finishes such as black walnut, ivory white, wax elephant wood for customers to choose from, and provided more than 50 kinds of exterior designs of interior doors to meet the individual needs of modern consumers. 

4. Green and environmentally friendly 

The raw materials used in wood-plastic composite doors are formed at one time under high temperature, high pressure and vacuum conditions. The materials do not contain formaldehyde. The thermal transfer technology is used in the secondary processing, eliminating the need for painting. During the production and use process, there is no release of any toxic or harmful gases and odors, making it a human-friendly product that meets the environmental protection standards of modern interior decoration. 

5. Waterproof, moisture-proof, anti-corrosion, anti-mildew, anti-insect, and non-deformable 

Wood-plastic products have the dual characteristics of wood and plastic. Therefore, in addition to being used as interior room doors, wood-plastic composite doors are especially suitable for places with large temperature differences, humidity and poor ventilation, such as wet bathrooms, storage rooms that require anti-corrosion, anti-mildew and anti-insect treatment. 

6. Reasonable structure and high strength 

The special cavity structure design ensures the ideal internal structure of the wood-plastic foaming material. Coupled with the excellent formula design and reasonable production process, the strength of the product is guaranteed. 

7. Quick-installation structure, saving time and effort in installation 

The wood-plastic doors adopt a quick-installation structure imported from Germany, and the installation of the door frame is extremely convenient. The door frame line and the door frame are connected by a snap joint, eliminating the need for nail guns or adhesives for fixation. 

8. Good thermal insulation and sound insulation performance 

The materials used in wood-plastic composite doors have uniform and fine pores and a specially designed cavity structure, ensuring that its thermal conductivity is lower than that of general plastic materials and has good sound reduction performance. After testing, the heat transfer coefficient of this product is 1W/m².k, and the thermal insulation performance reaches Grade I of GB/T16729-1997; the sound insulation performance level is Grade 6, with good thermal insulation and sound insulation performance. 

9. Good flame retardant performance 

Wood-plastic composite doors do not support combustion when exposed to an open flame and will automatically extinguish after the fire source is removed. After testing, the oxygen index of Longqiaomu wood-plastic composite doors is 48, and its fire protection performance level is B1. This performance of Longqiaomu wood-plastic composite doors will greatly improve the fire safety of residential houses. 

Micro-nano: Flame retardants for wood-plastic composites, mildew-proof agents for wood-plastic composites, anti-aging agents for wood-plastic composites, anti-aging agents for PVC, PP flame retardant masterbatches, anti-aging agents for suspended floors, anti-aging agents for sunshade nets, anti-aging agents for lawns, flame retardants for silicone rubber, and flame retardants for cable filler ropes.