36results about How to "Aggregation condition reached" patented technology

The invention discloses bio-based transparent nylon and a synthesis method thereof. The bio-based transparent nylon has the structure shown in formula I as described in the description, wherein in the formula I, a is equal to 10-100, b is equal to 10-200, c is equal to 10-100, d is equal to 10-100, and R represents polyesteramide. The bio-based transparent nylon has the advantages that mechanical performance and light transmittance are high, the water absorption rate is low, the machining performance is excellent, biological sources are achieved, and the bio-based transparent nylon can be applied to the fields of surrounding mechanical parts and electrical and mechanical parts of fuel and oil, precision optical instruments, pressure-proof view windows, observation mirrors, special lamp outer covers, food packaging thin films, high-grade sports equipment and the like.

The invention discloses long-carbon-chain semi-aromatic transparent polyamide and a synthesis method thereof. The long-carbon-chain semi-aromatic transparent polyamide has the structure shown in the formula I (shown in the description); in the formula I, a is equal to 10-100, b is equal to 10-200, c is equal to 10-100 and R is polyesteramide. The long-carbon-chain semi-aromatic transparent polyamide has a relatively high mechanical property, relatively high transmittance, low water absorption, excellent processability and biologically-derived characteristics, and can be applied to the fields of peripheral mechanical parts and electrical mechanical parts adopting fuel and oil, precision optical instruments, pressure-resistant windows, observation mirrors, special lamp outer covers, food packaging films, high-end sport equipment and the like.

The invention discloses a biological based long-carbon-chain semi-alicyclic polyamidoimide copolymer and a synthetic method of the copolymer. Gum rosin and castor oil are used as raw materials, maleopimaric acid anhydride, 1,10-decamethylene diamine and 11-aminoundecanoic acid are respectively prepared and are added into a stirring type polymerization reactor, and inert gas is introduced after vacuum pumping; the polymerization reactor is sealed for heating, the stirring speed of the polymerization reactor is regulated, reactants are subjected to heat insulation and pressure maintaining, and the air is released to normal pressure; and then, the polymerization reactor is heated, the stirring speed of the polymerization reactor is regulated, and the continuous vacuum pumping is carried out after the temperature is constant, and the copolymer is obtained after the reaction completion. The synthetic method disclosed by the invention is based on the melt polymerization principle, any organic solvent is not needed in the whole synthetic process, so additional steps for recovering the organic solvents are not needed, and in addition, no toxicity is generated on human bodies and environment. The synthetic polyamidoimide copolymer has good heat resistance performance, high-temperature rigidity, dimension stability and low water absorption rate and can be used for engineering plastics or film materials and the like.

The invention relates to a bio-based semi-aromatic polyamide and a synthesis method thereof. The bio-based semi-aromatic polyamide has the following structure of formula I: in formula I, a=10-100, b=10-200, c=10-100, d=10-100, and R is polyester amide. The bio-based semi-aromatic polyamide of the present invention has high mechanical properties and heat resistance, low water absorption, excellent processing performance and the characteristics of biological origin, and can be applied to the fields of electronic appliances, LED, automobile, aerospace and other fields. military field, etc.

The invention discloses bio-based high-temperature-resistant polyamide and a synthesis method thereof. The bio-based high-temperature-resistant polyamide has the structure shown in formula I as described in the description, wherein a is equal to 10-100, b is equal to 10-200, c is equal to 10-100, d is equal to 10-100, and R represents polyesteramide. The bio-based high-temperature-resistant polyamide has the advantages that mechanical performance and heat-resistant performance are high, the water absorption rate is low, the machining performance is excellent, biological sources are achieved, and the bio-based high-temperature-resistant polyamide can be applied to the fields of electronic electric appliances, LEDs, automobiles, aviation, aerospace, the military industry and the like.