Preparation method of luminescent polyamide composite material

A composite material and polyamide technology, which is applied in the field of preparation of luminescent polyamide composite materials, can solve problems such as poor luminous uniformity, weak luminous intensity, and poor dispersion, and achieve high luminous intensity, enhanced dispersion and luminous uniformity.

Inactive Publication Date: 2016-03-23
黄志华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, graphene is currently applied to nylon materials, and the effect of a single graphene-modified polymer is not ideal, which limits the application of graphene to nylon materials.
When it is necessary to obtain nylon materials with luminescent properties, phosphor powder and nylon materials are generally mixed and extruded. The intensity is weak, and the luminous performance and / or afterglow effect will also be seriously lost, which is not conducive to the application of luminous nylon materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] (3) The preparation method of nano-scale kaolin is as follows: ball mill 150g of kaolin ore at a speed of 1500 rpm for 60 minutes, then put it into 5L of deionized water, add 220g of potassium acetate and stir for 60 minutes, and filter and wash until the pH value is 7 After drying at 80°C, ball mill at 1200 rpm for 60 minutes, then adjust to 300W ultrasonic wave and perform ball milling at 1800 rpm for 1 hour to obtain kaolin powder with a particle size of 10-30nm.

[0016] (4) Y 0.9 VO 4 :Eu 3+ 0.04 ,Al 3+ 0.06 The preparation method of nano-phosphor powder is as follows: (a) 2.4mmolNAVO 4 12H 2 O was dissolved in a mixed solution containing 10ml of ethylene glycol and 3ml of distilled water; (b) The above solution was stirred at a centrifugal speed of 300r / min and added dropwise with 2.7mmol of Y(NO 3 ) 3 ·6H 2 O,Eu(NO 3 ) 3 ,Al(NO 3 ) 3 (0.9:0.04:0.06) in 12ml of ethylene glycol solution, then stirred at a centrifugal speed of 500r / min for 5~10min until...

Embodiment 1

[0029] A kind of preparation method of polyamide composite material, comprises the following steps:

[0030] (1) 12 parts of graphene / kaolin / SiO 2 Composite filler and 8 parts graphene / CaCO3 / SiO 2 The composite filler was dispersed in 15 parts of deionized water under 500KW ultrasonic vibration and 1200r / min centrifugal speed stirring, and treated for 90 minutes to form solution A; under 800KW ultrasonic vibration and 1000r / min centrifugal speed stirring, 4 parts of graphene were added and treated for 240 minutes to form mixed suspension;

[0031] (2) Add 50 parts of short glass fiber to the suspension, treat it under 300KW ultrasonic vibration and 800r / min centrifugal speed stirring for 90min, let it stand for 60min, remove the supernatant, wash it several times with deionized water, 100 Dry at ℃ for 90 minutes to obtain a hybrid glass fiber reinforcement;

[0032] (3) Weigh the materials according to the following parts by weight: 70 parts of nylon resin, 40 parts of hybr...

Embodiment 2

[0034] Based on the preparation method of Example 1, 8 parts of graphene / calcium carbonate / SiO in step (1) 2 Composite filler modified to 0.8 parts graphene / calcium carbonate / SiO 2 Composite fillers, and the rest remain unchanged, to obtain polyamide composite materials, the mechanical properties of which are tested in Table 1.

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Abstract

The invention discloses a preparation method of a luminescent polyamide composite material. The method comprises the following steps of (1) preparing a graphene/red-light phosphor/SiO2 composite material; (2) weighing the following materials in parts by weight: 60 to 70 parts of nylon resin, 30 to 40 parts of hybrid glass fiber reinforcement, 1 to 5 parts of nylon master batch, 1 to 5 parts of graphene/red-light phosphor composite material and 0.1 to 0.3 part of antioxygen; extruding the materials by a double-screw extruder and pelleting, wherein the hybrid glass fiber reinforcement is added through a side-feeder, the screw speed of the double-screw extruder is 120 to 150r/min, the temperature is 265 to 280 DEG C, and then the polyamide composite material is obtained. The preparation method of the luminescent polyamide composite material can enhance the dispersity and the luminance uniformity of phosphor in the luminescent polyamide composite material, and the high luminescent intensity is obtained.

Description

technical field [0001] The invention relates to a preparation method of a luminescent polyamide composite material. Background technique [0002] As the engineering plastic with the largest output and widest application range in the world, nylon has the advantages of high mechanical strength; excellent self-lubrication and wear resistance; wear resistance and chemical resistance; excellent processing performance and easy processing and molding. . Widely used in the automotive industry, electrical and electronic, machinery and other fields. [0003] Graphene is a new allotrope of carbon discovered in recent years. It has a single-layer two-dimensional carbonaceous material bonded by carbon atoms in sp2 hybrid orbitals. Its basic structural unit is the most organic material. The stable benzene six-membered ring is currently the thinnest material in the world. Due to its typical two-dimensional structure, graphene has excellent electrical properties (electron mobility at roo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K13/06C08K9/10C08K3/04C08K3/24C08K3/08C08K7/14C08K3/26C08K3/36C08K3/34C09K11/02C09K11/82
CPCC08L77/00C09K11/02C09K11/64C09K11/7776C08K13/06C08K9/10C08K3/04C08K7/14C08K2003/265C08K3/36C08K3/346C08K13/04C08K3/24C08K3/08
Inventor 黄志华
Owner 黄志华
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