Questions! Experts Answer the Most Cutting Edge Questions about Pultrusion Technology One by One

 

 

1. What kind of bracket does the bracket system refer to?

Answer: It is mainly a photovoltaic bracket, which can also be used for greenhouses, but the size will be larger.

 

2. Is the polyurethane blade made of polyurethane for the entire blade, or is it only the beam?

Answer: It was only used for the beam at the beginning. Later, with the maturity of the process technology, polyurethane can be used for the entire blade.

 

3. Are there thermoplastic supercritical foaming materials?

Answer: I am not familiar with this. We have glass fiber reinforced foamed polyurethane for sleepers.

 

4. Where is the bottleneck link of Arkema’s resin application? How many years is it expected to be applied in batches?

Answer: There is still a process for process matching for the new resin system; it is estimated that it will be promoted to the online verification stage next year.

 

5. Is the 5G communication pole tower pultruded? Can you explain it in detail?

Answer: Considering the need for circumferential strength, the winding process may be adopted, which can more conveniently adjust the strength in two directions and meet the installation requirements.

 

6. How do you view the application of caprolactam thermoplastic pultruded profiles?

What are the obstacles that limit its large-scale application? Does Chongqing International have the corresponding brand of glass fiber?

Answer: There are literature reports at home and abroad, and there are corresponding products on display at the exhibition. The main obstacle to its large-scale application is continuous and stable production. Regarding the resin system and process, we are committed to differentiation, which is a special glass fiber.

 

7. Do you have more performance improvement or special research and development ideas and specific progress for the reinforced glass fiber used in pultruded anchor rods?

Answer: The performance of composite materials is designed. If you have higher performance requirements for pultruded anchor rods, you can put it forward. We are willing to cooperate in the development of special glass fibers.

 

8. In line with the dual carbon requirements, in the two major directions of buildings and structures, in which direction may glass fiber materials have better performance in the future?

Answer: Considering acceptability, it should be used first in post-decoration, such as doors and windows, sun rooms, and the main structure of the building will be later. This is mainly related to acceptance and design. In fact, Europe already has full composite material factories, and there are pictures in my PPT.

 

9. Pultruded profiles are anisotropic, which is different from steel. How to solve it?

Answer: Pultrusion can be added with felt, fabric, etc., and the winding process can also be used.

 

10. Compared with carbon fiber pultruded wind power panels, what are the advantages of glass fiber pultruded panels?

Answer: The biggest advantage is cost performance, followed by compression strength and strength in the 90-degree direction.

 

11. How do you view the feasibility of the injection process for pultruded panels for wind power?

Answer: The injection process is affected by the fabric structure and gaps. The use of pultruded panels also requires the use of special interlayer fabrics. On the one hand, it ensures that the injection can proceed smoothly, and on the other hand, the interface bonding strength must be considered.

 

12. Is there any difference between glass fiber with polyurethane resin and glass fiber with unsaturated resin?

Answer: Surface treatment agent.

 

13. What is the application ratio of carbon-glass mixed pultruded panels? What is the ratio of carbon fiber to glass fiber?

A: The performance of composite materials is designed, and the same is true for carbon-glass plates. Depending on the amount of carbon fiber added, it can be made into 85GPa and 110GPa. Ultimately, it depends on the customer’s requirements for modulus and cost.

 

14. In a 1GW blade, what is the amount of glass fiber/carbon-glass hybrid/carbon fiber composite materials used?

A: This is related to the design of the blade manufacturer. For blades within 100 meters, only pure glass fiber can be used, so the mainstream blades on land basically all use glass fiber. The main ones that actively use carbon fiber are offshore blades, and there are some others, which may be to complete research projects.

 

15. The higher the fiber content, the more the beam plate warps. How to solve it?

A: I am not very clear about this question. In theory, the higher the fiber content, the higher the modulus, and the worse the conformability of the plate.

 

16. Is there a special glass fiber for dicyclopentadiene resin? Or is general glass fiber enough?

A: This requires special glass fiber.

 

17. Is the glass fiber used for thermoplastic pultrusion in Chongqing International currently prepreg or mixed?

Answer: Both types have been made.

 

18. What is the price of the improved S1 close to carbon fiber?

Answer: The price of this glass fiber is very high, more than 60,000. This is mainly due to the short life of the kiln, the high cost of the platinum-rhodium alloy leak plate, the short service life, and the small production capacity.

 

19. How much is the cost of polyurethane doors and windows? Have you ever calculated it?

Answer: For buildings with energy-saving requirements, the system cost is lower than that of broken bridge aluminum.

 

20. Is there a special glass fiber for phenolic resin?

Answer: Special glass fiber was developed a long time ago and has been used on the escape platform.

 

21. Does the electronic yarn have any requirements or considerations for magnetism?

Answer: There is not much consideration in this regard. It is necessary to understand the application scenarios and usage requirements. If necessary, targeted development can be done.

 

22. Does the pultrusion industry have special requirements for release agents?

A: Of course there are. Different resin systems require different release agents, and the terminal applications also have some requirements. For example, if you are making high-grade electrical insulation products, the release agent used will be more special.