Unlock instant, AI-driven research and patent intelligence for your innovation.
Long afterglow rare earth phosphor and polymer composite material
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of rare earth luminescence and composite materials, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., which can solve the problems of poor chemical stability, low afterglow brightness, health and environmental hazards, etc., and achieve good stability, high brightness and long afterglow time Effect
Inactive Publication Date: 2012-05-23
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Sulfide long afterglow materials have obvious disadvantages: such as low afterglow brightness, short time, poor chemical stability, and easy deliquescence. Although some shortcomings can be overcome by adding radioactive elements and coating the material, the addition of radioactive elements is harmful to human health and environmental hazards, so the use of this material is greatly limited
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0016] Example 1 The specific proportions of the long-lasting rare earth luminescent powder polymer composite material in parts by weight are: 15 parts of green long-lasting rare earth luminescent powder, 80 parts of high-density polyethylene (HDPE), 0.5 part of zinc stearate, antioxidant Agent (1010) 0.5 parts, paraffin 4 parts, castor oil 1 part.
[0017] Preparation method: According to the ratio, the above materials are extruded and granulated by twin-screw extruder, and the head temperature of the twin-screw extruder is 180°C.
Embodiment 2
[0019] The specific ratio of the long afterglow rare earth luminescent powder polymer composite material in parts by weight is:
[0020] 20 parts of green long-lasting rare earth luminescent powder, 75 parts of low-density polyethylene (LDPE), 1 part of zinc stearate, 1 part of antioxidant (1010), 3 parts of paraffin, and 1 part of castor oil.
[0021] Preparation method: According to the ratio, the above-mentioned materials are extruded and granulated by twin-screw extruder, and the head temperature of the twin-screw extruder is 160°C.
Embodiment 3
[0023] The specific ratio of the long afterglow rare earth luminescent powder polymer composite material in parts by weight is:
[0024] 30 parts of green long-lasting rare earth luminescent powder, 66 parts of ethylene vinyl acetate copolymer (EVA), 1 part of zinc stearate, 1 part of antioxidant (1010), 2 parts of paraffin, and 2 parts of castor oil.
[0025] Preparation method: According to the ratio, the above materials are extruded and granulated by twin-screw extruder, and the head temperature of the twin-screw extruder is 150°C.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
luminescence lifetime
aaaaa
aaaaa
adhesivity
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to a method for preparing a long afterglow rare earth phosphor and polymer composite material, which comprises the following steps: blending, extruding and pelleting various polymer materials such as high-density polyethylene (HDPE), low-density polyethylene (LDPE) and ethylene vinyl acetate (EVA), green long afterglow rare earth phosphor and other related addition agents with a double screw to prepare granules of the long afterglow rare earth phosphor and polymer composite material; and preparing various luminescent products by an injection molding or mould pressing method. The method effectively solves bottleneck problems of dispersion, adhesion, bright color, plasticization and the like in the process to prepare the environment-friendly material with long afterglow time, high luminance, good stability, and no toxicity or radiation. The performance of the material is that: the material has long fluorescent lifetime which is longer than 24 hours; the adhesive force is first grade; and the impact strength is 43kg / cm. The material can replace the traditional ZnS luminescent material, and can be applied to various safety exit signs in airplanes, ships, underground markets and the like, fir-fighting apparatus signs, public traffic stop boards, various rating plates, films, tapes, handicraft articles, ornaments, toys and the like.
Description
technical field [0001] The invention relates to a long afterglow rare earth luminescent powder and a polymer composite material. Background technique [0002] Long-lasting materials are materials that can store the energy of external light radiation and then slowly release the stored energy in the form of visible light. The long afterglow materials studied earlier are sulfide series long afterglow materials. In order to improve their luminous brightness and long afterglow time, they are often doped with radioactive elements, such as promethium and radium. Therefore, no external energy is needed, and the energy generated by the transformation of radioactive elements is used as the source of luminous energy. Sulfide long afterglow materials have obvious disadvantages: such as low afterglow brightness, short time, poor chemical stability, and easy deliquescence. Although some shortcomings can be overcome by adding radioactive elements and coating the material, the addition of ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
