Composite reinforced flame-retardant PBT (Polybutylece Terephthalate) engineering plastic

Abstract

The utility model belongs to the technical field of PBT (Polybutylece Terephthalate) engineering plastics, and discloses a composite reinforced flame-retardant PBT engineering plastic, which comprises a PBT engineering plastic base layer, a flame-retardant layer is arranged on the inner surface of the PBT engineering plastic base layer, a protective layer is arranged on the outer surface of the PBT engineering plastic base layer, uniformly distributed heat conducting columns penetrate through the PBT engineering plastic base layer, and the flame-retardant layer is arranged on the outer surface of the PBT engineering plastic base layer. The two ends of the heat conduction column penetrate through the flame-retardant layer and the protection layer respectively, the flame-retardant layer comprises a first-stage base layer and a second-stage base layer, a first-stage flame-retardant coating is arranged between the first-stage base layer and the second-stage base layer in a coating mode, the flame-retardant layer can prevent combustion caused by too high heat, and PBT engineering plastic can be applied to the electrical field easily; the protective layer improves the impact resistance of the PBT engineering plastic and is beneficial to protecting electronic components, and the heat conduction column penetrates through the inside and the outside of the PBT engineering plastic, so that the PBT engineering plastic has good heat conduction performance, the PBT engineering plastic can be used as components such as shells of the electronic components more favorably, and the PBT engineering plastic can be used in the electrical field favorably.

Description

Technical Field

[0001] The utility model belongs to the technical field of PBT engineering plastics, in particular to a composite reinforced flame-retardant PBT engineering plastic. Background Art

[0002] PBT engineering plastic is a thermoplastic polyester material with excellent performance. It has the following advantages: excellent mechanical strength and rigidity, and can maintain stable shape under high pressure and load; good heat resistance, and can work normally in high temperature environment; excellent electrical insulation performance, making it widely used in the electrical field; good chemical corrosion resistance, and can resist the erosion of various chemical substances.

[0003] Due to its good heat resistance and excellent electrical insulation properties, PBT engineering plastics are often used in the electrical field, such as the housings of some electronic components. However, conventional PBT engineering plastics lack sufficient flame retardancy and thermal conductivity, which affects the use of PBT engineering plastics in the electrical field.

[0004] Therefore, in order to solve the above problems, a composite reinforced flame retardant PBT engineering plastic is proposed. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a composite reinforced flame retardant PBT engineering plastic, which has the advantages of good flame retardancy and heat resistance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite reinforced flame-retardant PBT engineering plastic, comprising a PBT engineering plastic base layer, the inner surface of the PBT engineering plastic base layer is provided with a flame-retardant layer, the outer surface of the PBT engineering plastic base layer is provided with a protective layer, the PBT engineering plastic base layer is penetrated by evenly distributed heat-conducting columns, and the two ends of the heat-conducting columns respectively penetrate the flame-retardant layer and the protective layer.

[0007] Preferably, the flame retardant layer includes a primary base layer and a secondary base layer, and the primary base layer and the secondary base layer serve as the base layer of the flame retardant layer, which is conducive to the adhesion of the multi-layer flame retardant coating. A primary flame retardant coating is coated between the primary base layer and the secondary base layer, and a secondary flame retardant coating and a tertiary flame retardant coating are coated on the side away from the primary base layer and the secondary base layer, respectively. The use of a multi-layer flame retardant coating structure greatly improves the flame retardant effect, so that no open flame will occur when PBT engineering plastics are used as the shell of electronic components, which is conducive to the application of PBT engineering plastics in the electrical field.

[0008] Preferably, the protective layer is composed of a steel wire layer and an impact-resistant layer. The impact-resistant layer is arranged on the outer surface of the steel wire layer. The steel wire layer can prevent sharp objects from penetrating the PBT engineering plastic, thereby improving the strength of the PBT engineering plastic. The impact-resistant layer can reduce the damage of the PBT engineering plastic caused by the impact force, thereby preventing the electronic component housing made of the PBT engineering plastic from cracking, thereby facilitating the use of the PBT engineering plastic.

[0009] Preferably, the steel wire layer is made of transverse steel wires and longitudinal steel wires interwoven with each other. The densely interwoven steel wires constitute the steel wire layer, which can protect the PBT engineering plastic and prevent it from breaking easily.

[0010] Preferably, the impact-resistant layer is composed of a buffer layer and a braided layer, and the braided layer is arranged on the outer surface of the buffer layer. The buffer layer and the braided layer can absorb impact force, reduce the impact force on the PBT engineering plastic, and protect the PBT engineering plastic.

[0011] Preferably, the buffer layer is provided with uniformly distributed air pressure cavities, which further absorb impact force by deformation, thereby further reducing the impact force on the PBT engineering plastic.

[0012] Preferably, the two ends of the heat-conducting column are fixedly connected with an inner wall arc head and an outer wall arc head, which can increase the contact area with the air, thereby facilitating heat transfer, and the inner wall arc head and the outer wall arc head are respectively arranged on the inner surface and outer surface of the PBT engineering plastic, which can enhance the wear resistance of the PBT engineering plastic.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model can prevent combustion caused by excessive heat by setting a flame retardant layer, which is beneficial to the application of PBT engineering plastics in the electrical field. In addition, a protective layer is set to improve the impact resistance of PBT engineering plastics, which is beneficial to the protection of electronic components.

[0015] 2. The utility model provides a heat-conducting column which runs through the inside and outside of the PBT engineering plastic, so that the PBT engineering plastic has good thermal conductivity, which is more conducive to the use of the PBT engineering plastic as a component such as the housing of an electronic component and is conducive to the use of the PBT engineering plastic in the electrical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the flame retardant layer of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the impact-resistant layer of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the steel wire layer of the utility model.

[0021] In the figure: 1. PBT engineering plastic base;

[0022] 2. Flame retardant layer; 21. Primary base layer; 22. Secondary base layer; 23. Primary flame retardant coating; 24. Secondary flame retardant coating; 25. Third-level flame retardant coating;

[0023] 3. Protective layer; 31. Steel wire layer; 311. Transverse steel wire; 312. Longitudinal steel wire; 32. Impact-resistant layer; 321. Buffer layer; 322. Braided layer;

[0024] 4. Heat-conducting column; 5. Air pressure chamber; 6. Inner wall arc-shaped head; 7. Outer wall arc-shaped head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, the utility model provides a composite reinforced flame-retardant PBT engineering plastic, including a PBT engineering plastic base layer 1, a flame-retardant layer 2 is provided on the inner surface of the PBT engineering plastic base layer 1, which can prevent combustion caused by excessive heat, and is conducive to the application of PBT engineering plastics in the electrical field, and a protective layer 3 is provided to improve the impact resistance of PBT engineering plastics, which is conducive to protecting electronic components, and the outer surface of the PBT engineering plastic base layer 1 is provided with a protective layer 3, and the PBT engineering plastic base layer 1 is penetrated by uniformly distributed heat-conducting columns 4, and the two ends of the heat-conducting columns 4 respectively penetrate the flame-retardant layer 2 and the protective layer 3, and the heat-conducting columns 4 penetrate the inside and outside of the PBT engineering plastic, so that the PBT engineering plastic has good thermal conductivity, which is more conducive to the use of PBT engineering plastics as components such as housings of electronic components, and is conducive to the use of PBT engineering plastics in the electrical field.

[0027] Specifically, the flame retardant layer 2 includes a primary base layer 21 and a secondary base layer 22. The primary base layer 21 and the secondary base layer 22 serve as the base layer of the flame retardant layer 2, which is conducive to the adhesion of the multi-layer flame retardant coating. A primary flame retardant coating 23 is coated between the primary base layer 21 and the secondary base layer 22. A secondary flame retardant coating 24 and a tertiary flame retardant coating 25 are coated on the side away from the primary base layer 21 and the secondary base layer 22, respectively. The use of a multi-layer flame retardant coating structure greatly improves the flame retardant effect, so that no open flame will occur when PBT engineering plastics are used as the shell of electronic components, which is conducive to the application of PBT engineering plastics in the electrical field.

[0028] Furthermore, the protective layer 3 is composed of a steel wire layer 31 and an impact-resistant layer 32. The impact-resistant layer 32 is arranged on the outer surface of the steel wire layer 31. The steel wire layer 31 can prevent sharp objects from penetrating the PBT engineering plastic, thereby improving the strength of the PBT engineering plastic. The impact-resistant layer 32 can reduce the damage of the impact force to the PBT engineering plastic, thereby preventing the electronic component housing made of the PBT engineering plastic from being cracked, and is beneficial to the use of the PBT engineering plastic.

[0029] Furthermore, the steel wire layer 31 is made of transverse steel wires 311 and longitudinal steel wires 312 interwoven with each other. The densely interwoven steel wires constitute the steel wire layer 31, which can protect the PBT engineering plastic from being easily broken.

[0030] It is worth noting that the impact-resistant layer 32 is composed of a buffer layer 321 and a braided layer 322. The braided layer 322 is arranged on the outer surface of the buffer layer 321. The buffer layer 321 and the braided layer 322 can absorb impact force and reduce the impact force on the PBT engineering plastic to protect the PBT engineering plastic.

[0031] It is worth noting that uniformly distributed air pressure chambers 5 are provided in the buffer layer 321 , and the air pressure chambers 5 further absorb the impact force by deformation, thereby further reducing the impact force on the PBT engineering plastic.

[0032] It is worth mentioning that the two ends of the heat-conducting column 4 are fixedly connected with an inner wall arc head 6 and an outer wall arc head 7, which can increase the contact area with the air, thereby facilitating heat transfer, and the inner wall arc head 6 and the outer wall arc head 7 are respectively arranged on the inner surface and outer surface of the PBT engineering plastic, which can enhance the wear resistance of the PBT engineering plastic.

[0033] Working principle and process: The flame retardant layer 2 can prevent combustion caused by excessive heat, which is conducive to the application of PBT engineering plastics in the electrical field, and a protective layer 3 is set to improve the impact resistance of PBT engineering plastics, which is conducive to protecting electronic components. The heat-conducting column 4 runs through the inside and outside of the PBT engineering plastics, so that the PBT engineering plastics have good thermal conductivity, which is more conducive to the use of PBT engineering plastics as components such as the housing of electronic components, and is conducive to the use of PBT engineering plastics in the electrical field. The primary base layer 21 and the secondary base layer 22 are used as the base layer of the flame retardant layer 2, which is conducive to the attachment of the multi-layer flame retardant coating. The use of the multi-layer flame retardant coating structure greatly improves the flame retardant effect, making PBT engineering plastics When the shell of the electronic component is used, no open flame will occur, which is beneficial to the application of PBT engineering plastics in the electrical field. The steel wire layer 31 can prevent sharp objects from penetrating the PBT engineering plastics, thereby improving the strength of the PBT engineering plastics. The impact-resistant layer 32 can reduce the damage of the PBT engineering plastics caused by the impact force, thereby preventing the electronic component shell made of PBT engineering plastics from cracking, thereby facilitating the use of PBT engineering plastics. The inner wall arc head 6 and the outer wall arc head 7 can increase the contact area with the air, thereby facilitating the heat transfer. Moreover, the inner wall arc head 6 and the outer wall arc head 7 are respectively arranged on the inner surface and the outer surface of the PBT engineering plastics, thereby enhancing the wear resistance of the PBT engineering plastics.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite reinforced flame retardant PBT engineering plastic, comprising a PBT engineering plastic base layer (1), characterized in that: The inner surface of the PBT engineering plastic base layer (1) is provided with a flame retardant layer (2), the outer surface of the PBT engineering plastic base layer (1) is provided with a protective layer (3), and the PBT engineering plastic base layer (1) is penetrated by evenly distributed heat-conducting columns (4), and the two ends of the heat-conducting columns (4) respectively penetrate the flame retardant layer (2) and the protective layer (3).

2. The composite reinforced flame-retardant PBT engineering plastic according to claim 1, characterized in that: The flame retardant layer (2) comprises a primary base layer (21) and a secondary base layer (22), a primary flame retardant coating (23) is applied between the primary base layer (21) and the secondary base layer (22), and a secondary flame retardant coating (24) and a tertiary flame retardant coating (25) are applied respectively on the side of the primary base layer (21) away from the secondary base layer (22).

3. The composite reinforced flame-retardant PBT engineering plastic according to claim 1, characterized in that: The protective layer (3) is composed of a steel wire layer (31) and an impact-resistant layer (32), and the impact-resistant layer (32) is arranged on the outer surface of the steel wire layer (31).

4. The composite reinforced flame-retardant PBT engineering plastic according to claim 3, characterized in that: The steel wire layer (31) is made by interweaving transverse steel wires (311) and longitudinal steel wires (312).

5. The composite reinforced flame-retardant PBT engineering plastic according to claim 3, characterized in that: The impact-resistant layer (32) is composed of a buffer layer (321) and a braided layer (322), and the braided layer (322) is arranged on the outer surface of the buffer layer (321).

6. The composite reinforced flame-retardant PBT engineering plastic according to claim 5, characterized in that: The buffer layer (321) is provided with uniformly distributed air pressure cavities (5).

7. The composite reinforced flame-retardant PBT engineering plastic according to claim 1, characterized in that: The two ends of the heat-conducting column (4) are fixedly connected with an inner wall arc-shaped head (6) and an outer wall arc-shaped head (7).

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