Novel aramid fiber polymer
By using the new aramid polymer made of 1,2,4,5-phenylamidine and 1,2,4,5-phenylamidine chloride polycondensation, a structure of molecules arranged in a planar shape is solved, and the existing aramid polymers have improved their insulation performance and achieved a significant improvement in insulation performance.
Patent Information
- Application Number
- CN202510191464.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-05-06
AI Technical Summary
There is room for improvement in the insulation performance of existing aramid polymers, especially in flake-like products.
A new aramid polymer made of 1,2,4,5-phenylenetetramine and 1,2,4,5-phenylenetetramine chloride polycondensation form a structure in which molecules are arranged in a planar shape.
The insulation performance is significantly improved, so that the sheet-like products made of the polymer perform excellent in insulation performance.
Smart Images
Figure CN119931028A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of aramid fibers, and in particular to a novel aramid fiber polymer. Background Art
[0002] Aramid has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, light weight, insulation, anti-aging, and long life cycle. It is widely used in composite materials, bulletproof products, building materials, special protective clothing, electronic equipment and other fields. The most widely used varieties are aramid 1313 and aramid 1414. The molecular chain of aramid 1313 is zigzag, and the molecular chain of aramid 1414 is straight. The molecules of the two are arranged in chains. The present application provides a new aramid polymer with planar molecular arrangement. Summary of the invention
[0003] The purpose of the present invention is to provide a novel aramid polymer with planar molecular arrangement.
[0004] The technical solution adopted by the present invention is: a new type of aramid polymer, comprising a repeating unit having the following formula (I):
[0005]
[0006] To further optimize the technical solution, the novel aramid polymer is prepared by polycondensation of 1,2,4,5-benzenetetramine and 1,2,4,5-pyromellitoyl chloride.
[0007] Compared with the prior art, the present invention has the following advantages: the aramid polymer of the present invention has a planar structure, and the sheet-like product made of the aramid polymer can significantly improve the insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is the molecular formula of 1,2,4,5-benzenetetramine.
[0009] Figure 2 It is the molecular formula of 1,2,4,5-pyromellitoyl chloride. DETAILED DESCRIPTION
[0010] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.
[0011] Specific implementation: A novel aramid polymer comprises a repeating unit having the following formula (I):
[0012]
[0013] The 1, 2, 4, and 5 positions on each benzene ring are connected to the adjacent benzene rings through -CO-NH- (or -NH-CO-) bonds, forming a planar structure (or a network structure). The thin sheet products made from it can significantly improve the insulation performance.
[0014] Specifically, the novel aramid polymer is prepared by polycondensation of 1,2,4,5-benzenetetramine and 1,2,4,5-pyromellitoyl chloride, and the molecular formulas of the two are as follows: Figure 1 and Figure 2 As shown in . First, 1,2,4,5-benzenetetramine is dissolved in N,N-dimethylacetamide, and then 1,2,4,5-pyromellitoyl chloride is added under stirring (an acid binding agent may be added later), and then the temperature is gradually raised until the reaction is completed, and then calcium hydroxide is added. The resulting mixed solution is then washed with water for multiple times, filtered, and dried to obtain the novel aramid polymer. For a 1,2,4,5-benzenetetramine molecule, the four amine groups on it are condensed with one acyl chloride group on each of the four 1,2,4,5-pyromellitoyl chloride molecules. Similarly, for a 1,2,4,5-pyromellitoyl chloride molecule, the four acyl chloride groups on it are condensed with one amine group on each of the four 1,2,4,5-benzenetetramine molecules.
[0015] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.
Claims
1. A novel aramid polymer comprising repeating units of the following formula (I):
2. A novel aramid polymer according to claim 1, characterized in that: It is prepared by polycondensation of 1,2,4,5-benzenetetramine and 1,2,4,5-pyromellitoyl chloride.