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Polypropylene composite material and method for preparing folding stool from same

A composite material, polypropylene technology, used in folding chairs, applications, household appliances, etc., can solve the problems of difficult dyeing, uniform dispersion, etc., and achieve the effect of improving coloring uniformity

Active Publication Date: 2017-10-13
慈溪市赛斯特金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a high-color polypropylene composite material, which solves the problem that the dye molecules in the existing polypropylene composite materials are difficult to combine well with the polypropylene molecular chain, so the dye is difficult to disperse evenly in PP , has the advantage of improving color uniformity

Method used

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  • Polypropylene composite material and method for preparing folding stool from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of preparation method of the mixture of dyestuff and hyperbranched resin:

[0025] S1: Dissolve trimellitic anhydride in tetrahydrofuran and set aside; weigh diethylene glycol ether and add it to the reaction vessel. The molar ratio of trimellitic anhydride to diethylene glycol ether is 1:1. Add the tetrahydrofuran solution of trimellitic anhydride dropwise, and finish dropping after 1.5 hours; then raise the temperature to normal temperature, and react for 12 hours;

[0026] S2: Then add methanol, the molar ratio of methanol and trimellitic anhydride is 2:1, then add the catalyst, raise the temperature to 70°C, turn on the condensing reflux device, and react for 10-12h;

[0027] S3: Evaporate the reaction mixture to remove methanol and tetrahydrofuran, add catalyst, react at 80°C for 1h under reduced pressure, then raise the temperature to 100°C for 1h, continue to heat up to 125°C, react for 3-4h, cool down to 80°C, and formulate A certain amount...

Embodiment 2

[0028] Example 2: A kind of colored sand, which is prepared by the following method. Add the mixture of the dye and hyperbranched resin prepared in Example 1 to the liquid storage tank of the spray dryer, heat to 100 ° C and melt, and then add the formula amount of dye , start the spray drying operation after mixing evenly; the parameters for controlling the spray drying are as follows: the liquid pressure is 4MPa, the nozzle diameter is 0.6mm, the gas pressure is 1.0MPa, and the gas flow rate is 18m 3 / h.

Embodiment 3

[0029] Embodiment 3: a kind of color sand, adopt following method to prepare, add hyperbranched resin into the liquid storage tank of spray drier according to formula quantity, add the dyestuff of formula quantity after heating to melting, the added quality of dyestuff and hyperbranched resin The ratio is 40:60, and the spray drying operation starts after mixing evenly; the parameters for controlling the spray drying are as follows: the liquid pressure is 4MPa, the nozzle diameter is 0.6mm, the gas pressure is 1.0MPa, and the gas flow rate is 18m 3 / h.

[0030] Wherein the hyperbranched resin is a carboxyl-terminated hyperbranched polyester purchased from the market, the number of carboxyl groups is 12 / mol, the acid value is 260 mg·KOH / g, the hydroxyl value is <15 mg·KOH / g, and the molecular weight is 2800 g / mol.

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Abstract

The invention discloses a polypropylene composite material and a method for preparing a folding stool from the same. The polypropylene composite material comprises color master batches for coloring polypropylene, wherein the color master batches comprise dye and hyperbranched resin; and the color master batches are prepared through a spray drying method. The polypropylene composite material has the advantage of improving the color uniformity.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene composite material and a method for preparing a folding stool by using the material. Background technique [0002] Polypropylene is a kind of thermoplastic resin prepared by polymerizing propylene. Because of its non-toxic, odorless, low density, and convenient preparation, it has an irreplaceable position in the chemical industry. Plastic products made of it are widely used In life, such as tea cups, tableware, furniture, etc., among which folding stool is one of the application occasions. [0003] In order to improve the aesthetics of the products used, it is often necessary to dye polypropylene products with dyes. The existing dyeing method is mainly to melt and blend the dyes with the base material (PP base material used in PP products), and through extrusion The color masterbatch is obtained by granulation, which is added to the PP masterbatch, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/00C08K3/26C08K3/34C08J3/20A47C4/00
CPCA47C4/00C08J3/201C08J2323/12C08J2467/00C08K2003/265C08L23/12C08L67/00C08K3/26C08K3/346
Inventor 吴乃君
Owner 慈溪市赛斯特金属制品有限公司
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