Anti-cracking, low-smoke, halogen-free and flame-retardant sheath material and preparation method thereof
A technology of flame retardant sheathing and sheathing material, applied in plastic/resin/wax insulators, organic insulators, etc., can solve problems such as limiting practical application, reducing mechanical properties, sheath cracking, etc., achieving excellent practical performance, reducing internal Stress, high economical effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0036] The present invention also provides a preparation method for the above-mentioned sheath material. The formulation of the above-mentioned sheath material is adopted and mainly includes the following steps:
[0037] 1) Add the raw materials to the internal mixer in proportion to banbury, and banbury at 140~150℃ for 15~20min;
[0038] 2) Extrude the product obtained in step 1) using an extruder.
[0039] Among them, the banburying process and the extrusion process are subject to the actual equipment and products, but it should be ensured that the material is banned at 140~150℃ for not less than 15 minutes and not more than 20 minutes; in step 2), it is preferable to use two-stage Extrusion temperature of twin-screw section is 100-165℃, single-screw extrusion temperature is 120-140℃.
[0040] The invention provides an anti-cracking low-smoke halogen-free flame-retardant sheath material and a preparation method thereof. The sheath material uses EVA with a VA content of 26-30% and me...
Example Embodiment
[0042] Example 1
[0043] The anti-cracking, low-smoke, halogen-free, flame-retardant sheath material in this embodiment is calculated in parts by weight, and its raw materials include: 27.5 parts of EVA (FL00328 Exxon Mobil), 7.5 parts of metallocene linear low-density polyethylene (1018LA Exxon Mobil) Sen Mobil), 7.5 parts of compatibilizer, 55 parts of halogen-free flame retardant filler, 5 parts of char-forming agent, 0.75 part of filler treatment agent, 0.6 part of antioxidant, 0.65 part of lubricant, 0.06 part of crosslinking agent. Wherein, the VA content of the EVA is 27%; the compatibilizer maleic anhydride grafted EVA (9630 DuPont); the halogen-free flame retardant filler is aluminum hydroxide (Hengyi Chemical) and magnesium hydroxide (Hengyi) Yi Chemical) according to the mass ratio of 2:1 composition; the filler treatment agent uses low polyvinyl triethoxysilane (Jessica) with a degree of polymerization of 2 to 3; the antioxidant uses four [ β-(3,5-di-tert-butyl-4-hy...
Example Embodiment
[0044] Example 2
[0045] The anti-cracking, low-smoke, halogen-free and flame-retardant sheath material in this embodiment is calculated in parts by weight. Its raw materials include: 30 parts of EVA, 10 parts of metallocene linear low-density polyethylene, 5 parts of compatibilizer, and 45 parts of halogen-free Flame retardant filler, 3 parts char-forming agent, 0.5 part filler treatment agent, 0.2 part antioxidant, 0.3 part lubricant and 0.04 part crosslinking agent. Wherein, the VA content of the EVA is 26-28%; the compatibilizer maleic anhydride grafted polyethylene (1020 Exxon Mobil); the halogen-free flame retardant filler is aluminum hydroxide and magnesium hydroxide A composition with a mass ratio of 2:1; the filler treatment agent adopts low-polyvinyl tris (β-methoxyethoxy) silane (Jessica) with a degree of polymerization of 2 to 3; the antioxidant Using β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate (Shenghong Chemical); the lubricant is a siloxane oligome...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap