Preparation method of silicon carbide plastic film opening agent
A technology of plastic film and anti-blocking agent, which is applied in the field of materials, can solve the problems of poor opening performance, affecting film printability, heat sealing performance and color, and affecting the safety of food packaging materials, etc., and achieves mild process conditions and low production costs. Effect
Inactive Publication Date: 2017-01-11
DALIAN RUIXIANDA PLASTIC CO LTD
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Problems solved by technology
[0002] Plastic film anti-blocking agent has the following three generations of products: the first generation is talcum powder, diatomaceous earth, calcium hydrogen phosphate, etc., its disadvantage is that the opening performance is poor, and the optical and other physical and chemical properties of the plastic film are affected by adding
The second generation is oleic acid amide and ethylene bis stearamide derivatives, etc., and its disadvantage is that the precipitates of the organic anti-blocking agent are attached to the surface of the film, which affects the printability, heat sealability and color of the film, and also affects its use as a food packaging material. safety
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0006] The present invention will be further explained below in conjunction with specific examples.
[0007] The preparation method of silicon carbide plastic film opening agent, the precipitation reaction is carried out with SiC and concentrated sulfuric acid as raw materials, a certain amount of SiC and additives are added to the reaction kettle, the temperature is raised after stirring evenly, and in the stirring state, drip into the reaction liquid Add a certain concentration of concentrated sulfuric acid until the pH value of the solution is 9, keep the above system warm for 30-60 minutes, then continue to heat up, add an appropriate amount of sulfuric acid and SiC solution in proportion to the stirring state, and maintain the pH value of the solution at 10, The product was washed, filtered and dried to obtain SiC anti-blocking agent powder. The particle size of the SiC is 100-150 nm. The mass ratio of sulfuric acid and SiC is 5:1.
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Abstract
The invention discloses a preparation method of a silicon carbide plastic film opening agent. The preparation method comprises that SiC and concentrated sulfuric acid as raw materials undergo a precipitation reaction, a certain amount of SiC and an additive are added into a reactor, the materials are uniformly stirred and are heated, concentrated sulfuric acid with a certain concentration is added into the reaction liquid drop by drop under stirring until solution pH is 9, the system is subjected to thermal insulation for 30-60min and then is continuously heated, a proper amount of sulfuric acid and a SiC solution are added into the system drop by drop according to a certain ratio under stirring, the solution pH is kept at 10, and the product is washed, filtered and dried so that SiC opening agent powder is obtained. The product has an oil absorption value of 1.01mL / g the same to that of the imported product widely used at present. The preparation method has mild technical processes. The product is powder with the particle sizes of about 6-10 microns, is free of a crushing process and has a low production cost.
Description
technical field [0001] The invention relates to the field of materials, in particular to a preparation method of a silicon carbide plastic film opening agent. Background technique [0002] Plastic film opening agent has the following three generations of products: the first generation is talcum powder, diatomaceous earth, calcium hydrogen phosphate, etc. The disadvantage is that the opening performance is poor, and the addition of it affects the optical and other physical and chemical properties of the plastic film. The second generation is oleic acid amide and ethylene bis stearamide derivatives, etc., and its disadvantage is that the precipitates of the organic anti-blocking agent are attached to the surface of the film, which affects the printability, heat sealability and color of the film, and also affects its use as a food packaging material. safety. The third generation is synthetic silica, which has the advantages of good opening performance and non-toxicity. Adding ...
Claims
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IPC IPC(8): C01B31/36
Inventor 梁继鹏
Owner DALIAN RUIXIANDA PLASTIC CO LTD