A kind of polyamide resin and its application and the polyamide composition made up of it
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一种聚酰胺组合物、聚酰胺树脂的技术，应用在聚酰胺组合物领域，能够解决消耗大能量、影响用者健康等问题
Active Publication Date: 2014-10-15
KINGFA SCI & TECH CO LTD +1
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Abstract
Description
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Problems solved by technology
Petroleum is non-renewable, and the refining of these raw materials requires complex chemical processes, which consume a lot of energy and produce many by-products that cause environmental pollution. This polyamide contains some gas volatiles, which will gradually emit during use. , affecting user health
Method used
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Embodiment 1~16 and comparative example 1~10
[0092] In the autoclave equipped with magnetic coupling stirring, condenser, gas phase port, feeding port, and pressure explosion-proof port, add the reaction raw materials according to the ratio in the table. Then add benzoic acid, sodium hypophosphite and deionized water. The amount of benzoic acid substance is 2.5% of the amount of diamine, nylon salt, lactam and amino acid total substance, sodium hypophosphite weight is 0.1% of other feeding weight except deionized water, and deionized water weight is 30% of total feeding weight %. Vacuumize and fill high-purity nitrogen as a protective gas, heat up to 220°C within 2 hours with stirring, stir the reaction mixture at 220°C for 1 hour, then raise the temperature of the reactant to 230°C with stirring. The reaction was continued at a constant temperature of 230°C and a constant pressure of 2.2MPa for 2 hours, and the pressure was kept constant by removing the formed water. After the reaction was completed, the material was d...
Embodiment 17~22
[0105] Embodiment 17~22 and comparative example 11~12
[0106] Mix the polyamide resin, flame retardant and other additives uniformly in the high mixer according to the formula in Table 6~7, then feed them into the twin-screw extruder through the main feeding port, and the reinforcing filler passes through the side feeding scale side feeding, extrusion, water cooling, granulation and drying to obtain the polyamide composition. Wherein, extrusion temperature is 330 ℃.
[0107] Formulations in the following table of table 6 are parts by weight
[0108]
[0109]
[0110] Among them, ⊙ means no foaming; Indicates foaming.
[0111] Table 7
[0112]
[0113]
[0114] Among them, ⊙ means no foaming; Indicates foaming.
[0115] It can be seen from Table 6 and Table 7 that the polyamide composition prepared from the polyamide resin prepared in the examples of the present application has a lower gas volatile content and better reflow soldering surface performance, wh...
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Abstract
The present invention discloses a polyamide resin and its application and polyamide composition thereof. The repeating units of the described polyamide resin comprises the following components: dicarboxylic acid units composed 80-100mol% of polyamide resin; aliphatic diamines units having 2-14 carbon atoms composed 80-100mol% of polyamide resin; lactam or amino acid units having 6-14 carbon atoms composed 0-20mol% of polyamide resin; in the described polyamide resin, the bio-based carbon concentration is more than 45%; the described bio-based carbon mole concentration is calculated according to the formula below: bio-based carbon concentration=(bio-based carbon mole content / total organic carbon mole content)*100%. The described polyamide resin in the present invention has low gas volatile, hence the polyamide composition produced thereof has low gas volatile too, and can be applied to food-contact field. In addition, the surface condition after reflow soldering of the polyamide composition produced is good.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a polyamide resin, its application and a polyamide composition composed of it. Background technique [0002] Polyamide is widely used because of its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, low coefficient of friction, certain flame retardancy, and easy processing. It is suitable for filling and modifying with glass fiber and other fillers to improve performance and expand application range. In recent years, semi-aromatic polyamides have been focused on development due to their better heat resistance and mechanical properties. [0003] However, the existing polyamide resins mainly use raw materials from petroleum cracking products in the synthesis process. Petroleum is non-renewable, and the refining of these raw materials requires complex chemical processes, which consume a lot o...
Claims
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Application Information
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