Thermal conductive plastic alloy, radiator based on alloy and preparation method

Abstract

The invention discloses a thermal conductive plastic alloy used for a radiator, a radiator and a preparation method. The thermal conductive plastic alloy comprises polybutene or polyisobutene, polyethylene, graphite powder, carbon fiber, thermal conductive carbon black, a thermal conductive reinforcing agent, a titanate coupling agent and stearic acid. The thermal conductive plastic alloy is subjected to granulation, then pipe drawing and injection molding are carried out, an inner water channel pipe and a connecting piece of an radiator are prepared, the inner water channel pipe is expanded into an inner hole of an aluminum wing pipe of the radiator to obtain a radiator column material or sheet material, the column material or the sheet material and the connecting piece are subjected to sweat soldering to prepare a radiator single sheet, and finally the radiator single sheets are subjected to sweat soldering to compose a radiator. The thermal conductive plastic alloy and the radiator are advantaged by good environmental protection and excellent heat radiation performance, are stable and durable, and have protruding characteristics of no fouling, no rusting, no corrosion, no cracking, no pollution, no deformation, no abnormal sound and no aging.

Description

technical field [0001] The invention relates to a heat-conducting alloy material and a heat sink, in particular to a heat-conducting plastic alloy, a plastic-aluminum composite heat sink based on the alloy and a preparation method thereof. Background technique [0002] my country has a wide area of ​​hot summer and cold winter, with a living area of ​​more than 3 billion square meters, especially in the south, which is humid and cold in winter. With the rapid development of my country's national economy, the market for plastic-aluminum composite radiators for heating is growing. The requirements are getting higher and higher. According to the current plastic-aluminum composite radiator, the source is the latest product with the patent number ZL201010001190. This product has a leap forward on the basis of copper-aluminum composite radiators, which not only reduces production costs and logistics Cost, and has a good performance in terms of energy saving and consumption reduction...

AI Technical Summary

Problems solved by technology

However, there are still many defects and deficiencies: 1. The heat conduction direction of the heat conduction material graphite used is longitudinal axis (perpendicular to the heat dissipation direction caused by its molecular structure); 2. The main component of the inner water channel is random Copolymerized polypropylene or non-cross-linked polyethylene plastic, its own thermal conductivity is 0.2W / (m 2 k), not ideal; 3. The inner water channel of the radiator is a single water channel, and the heat dissipation area is limited, resulting in slow heat dissipation and insufficient heat dissipation; 4. Random copolymerized polypropylene or Non-cross-linked polyethylene and graphite are mainly cross-linked by coupling agents. According to the existing plastic composite technology, there is no ideal coupling agent, and the existing situation of anti-oxidant anti-aging will affect the service life of the product. Urgent need to improve or improve

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