Thermochromic thermoplastic elastomer (TPE) with V0 flame-retardant grade and preparation method thereof

Abstract

The invention provides a thermochromic thermoplastic elastomer (TPE) with a V0 flame-retardant grade and a preparation method thereof. The thermochromic thermoplastic elastomer (TPE) with a V0 flame-retardant grade comprises the following components in parts by weight: 15-40 parts of styrene elastomer, 5-28 parts of mineral oil, 4-32 parts of polyolefin, 5-15 parts of polyolefin thermoplastic elastomers, 1-10 parts of a graft or a polar copolymer, 25-46 parts of a flame retardant, 0.1-3 parts of toner, 0.1-4 parts of a lubricant and 0.1-0.5 part of an antioxidant. The thermochromic thermoplastic elastomer (TPE) with a V0 flame-retardant grade has the advantages of environmental protection, soft handfeel, precipitation resistance, aging resistance, excellent flame retardancy, capability ofchanging color under a certain temperature threshold value, and the like. In addition, vulcanization crosslinking is not needed, the processing process is simple, cold resistance is excellent, and better size precision and surface fineness are achieved.

Description

technical field [0001] The invention relates to the field of TPE materials, in particular to V0 flame-retardant grade thermochromic thermoplastic elastomer TPE and a preparation method thereof. Background technique [0002] Flame retardant refers to the property of the substance or the treated material that obviously delays the spread of flame; this plays a guiding role in the selection of the range of use of materials, especially materials used in building materials, ships, vehicles, and household appliances require high flame retardancy; At present, there are many methods for evaluating flame retardancy, such as oxygen index measurement method, horizontal or vertical combustion test method, etc.; flame retardancy level, that is, the property of the substance or the material after treatment that obviously delays the spread of flames, and the grades based on this system. The flame retardant grades of plastics are gradually increased from HB, V-2, V-1 to V-0; V0 grades are s...

AI Technical Summary

Problems solved by technology

[0003] With the advent of the intelligent age, all kinds of electronic products are filling our lives and are very close to our daily life; with the improvement of environmental protection requirements in various countries around the world, traditional PVC is used in electronic appliances due to its own plasticizer and halogen problems. The use of the product is limited; and the thermal stability of PVC is relatively poor, and it is easy to age and fail under long-term power-on and sunlight exposure, causing hidden dangers; and PVC will release toxic chlorine-containing compounds during thermal aging , contrary to green and sustainable development

[0004] Styrene elastomer is gradually replacing the application of PVC in electronic products due to its advantages of environmental protection, softness and comfort, wide range of hardness and low temperature resistance; however, styrene elastomer is easy to burn due to its low oxygen index, and it has a long-term The temperature resistance is not very high. Generally, the long-term use temperature of SBC thermoplastic elastomers is generally below 70°C; and the temperature of polymer materials is easily caused by the influence of charging time and environment during the charging process of mobile phones or electronic devices. Elevate or even overheat and catch fire

[0005] The current wire design for over-temperature early warning is to add a thermochromic layer at the intermediate structure when preparing the wire for over-temperature early warning; this increases the production process of the product and increases the cost of the product

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