Preparation method of polytetrafluoroethylene plastic particles containing filler
A technology of polytetrafluoroethylene and plastic particles, applied in the field of polytetrafluoroethylene, can solve problems such as low production efficiency and complex production process, and achieve the effects of reducing labor input, simple production process and high quality
Active Publication Date: 2020-09-15
泰州市季氟隆塑胶制品有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a preparation method for polytetrafluoroethylene plastic particles containing fillers, to solve the problem that the production process of existing polytetrafluoroethylene plastic particles proposed in the above-mentioned background technology is too complicated, resulting in low production efficiency
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] In order to make the technical solutions of the present invention clearer and clearer to those skilled in the art, the present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.
[0032] The preparation method of the polytetrafluoroethylene plastic particle containing filler provided in this embodiment mainly comprises the following steps:
[0033] Step A: adding 20-60 parts by weight of anhydrous hydrofluoric acid to 70-100 parts by weight of chloroform to fluorinate chloroform, and the reaction temperature is 65-90 degrees Celsius;
[0034] Step B: making tetrafluoroethylene from the fluorinated chloroform under the catalysis of 1-5 parts by weight of antimony pentachloride by thermal cracking;
[0035] Step C: Add the following reactants in stainless steel polymerization kettle by weight, 10-20 parts of filler, 4-12 parts of plasticizer, 2-6 parts of heat conducting a...
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The invention discloses a preparation method of polytetrafluoroethylene plastic particles containing a filler, and belongs to the technical field of polytetrafluoroethylene. The preparation method mainly comprises the following steps: A, adding anhydrous hydrofluoric acid into trichloromethane; B, preparing tetrafluoroethylene from fluorinated trichloromethane by utilizing a thermal cracking method under the catalysis of antimony pentachloride; C, adding the filler, a plasticizer, a heat conducting agent, a dispersing agent, a toughening agent, a heat stabilizer and a coupling agent; D, addinga tetrafluoroethylene monomer into a stainless steel polymerization kettle in a gas phase manner; E, adding water to dilute the polymerized product, fully stirring, washing with water, and drying toobtain polytetrafluoroethylene resin; and F, crushing the polytetrafluoroethylene resin to obtain the required polytetrafluoroethylene plastic particles. According to the preparation method of the polytetrafluoroethylene plastic particles containing the filler, the production process is simple, and the produced high-insulation polytetrafluoroethylene is uniform in density and high in quality.
Description
technical field [0001] The invention relates to a preparation method of polytetrafluoroethylene plastic particles containing fillers, and belongs to the technical field of polytetrafluoroethylene. Background technique [0002] White, odorless, tasteless, non-toxic powder, commonly known as "Plastic King". It has excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good aging resistance. High temperature resistance, working temperature up to 250°C. Low temperature resistance, good mechanical toughness at low temperature, even if the temperature drops to -196°C, it can maintain 5% elongation. Corrosion-resistant, inert to most chemicals and solvents, resistant to strong acids and alkalis, water and various organic solvents. Good weather resistance, with the best aging life among plastics. High lubrication, the lowest coefficient of friction among solid materials. Non-adhesive, it is the one with the smal...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08J3/12C08L27/18C08L63/00C08K13/04C08K5/11C08K3/22C08K7/14C08K5/544C08K5/098C08F114/26
CPCC08J3/12C08F114/26C08J2327/18C08J2463/00C08K13/04C08K5/11C08K2003/2296C08K7/14C08K5/544C08K5/098
Inventor 季啸季帮军
Owner 泰州市季氟隆塑胶制品有限公司