Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Thermosetting lens composition, thermosetting lens, and manufacturing method thereof

A thermal curing and composition technology, applied in glasses/goggles, instruments, optics, etc., can solve problems such as process safety doubts, poor wear resistance and impact resistance, and easy explosion

Pending Publication Date: 2021-11-09
长兴特殊材料(苏州)有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CR-39 lens has the advantages of good chemical stability, low specific gravity, low dispersion, good light penetration, refractive index can be adjusted according to material requirements, easy to process, not easy to fade after dyeing, etc., but its wear resistance and impact resistance Poor sex
Currently used to produce CR-39 (Dially Glycol Carbonates), the selected initiator IPP (diisopropyl peroxydicarbonate) is the most widely used, but the initiator IPP needs to be stored at low temperature (-10°C), and it is very easy to explode during polymerization , so there are doubts about the safety of the process

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
  • Thermosetting lens composition, thermosetting lens, and manufacturing method thereof
  • Thermosetting lens composition, thermosetting lens, and manufacturing method thereof
  • Thermosetting lens composition, thermosetting lens, and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0095] The preparation method of the heat-curable lens composition as described herein is to use a heat-curing program to cure for about 20-24 hours, including the following steps:

[0096] S1. The heat-curable lens composition is mixed into a glue solution according to the ratio as claimed in claim 2, and vacuum defoaming is performed to form a first mixture;

[0097] S2. injecting the first mixture into a light-transmitting mold to form a mold body, and heating the mold body to form a second mixture;

[0098] S3. performing temperature-controlled curing on the second mixture to form a heat-cured lens;

[0099] S4. Release and dry the heat-cured lens in S3, and perform secondary curing to obtain the heat-cured lens.

[0100] In another preferred example, the vacuum defoaming in S1 lasts for 30 minutes at room temperature and a pressure less than 0.1 torr.

[0101] In another preference, a demoulding step can be added after forming the second mixture;

[0102] In another pr...

Embodiment 1

[0109] Example 1. Preparation of thermosetting lenses

[0110] Example 1 is prepared according to the list of reagents in Table 1 and Table 2. After the reagents are mixed evenly with the listed weight parts, the obtained glue is prepared according to the following steps to prepare thermosetting lenses:

[0111] (1) Put the thermosetting lens composition into a vacuum oven at room temperature and defoam in vacuum for 30 minutes at a pressure of less than 0.1 torr to form a first mixture).

[0112] (2) injecting the first mixture into a light-transmitting mold to form a mold body, and heating the mold body to form a second mixture. The heating program used was:

[0113] First raise the temperature of the mold body from room temperature to 41°C, and heat it at 41°C for 11 hours; then raise the temperature of the mold body from 41°C to 110°C, and heat it at 110°C for 8 hours; ℃ to 55 ℃, and continue for 1 hour

[0114] (3) Perform temperature-controlled curing on the second mi...

Embodiment 2 to 5

[0117] Examples 2 to 5: Preparation of thermosetting lenses

[0118] Examples 2 to 5 are based on the reagents and dosages listed in Table 1, using the same method as in Example 1 to mix evenly and carry out glue injection molding to form a mold body, and then release the mold after curing, and perform the following lenses The evaluation items, and the results are shown in Table 3.

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

No PUM Login to View More

Abstract

The invention relates to a thermosetting lens composition, a thermosetting lens and a manufacturing method thereof. The thermosetting lens composition containing a plurality of (meth) acrylate monomers and a thermal initiator in a specific ratio is thermoset to obtain the thermosetting lens. Therefore, the method is suitable for the specification of a 1.50 thermocuring acrylic lens, the stability of the manufacturing process is high, the production risk and cost can be reduced, and the obtained thermocuring acrylic lens has better heat resistance and high Abbe number.

Description

technical field [0001] The present invention relates to a thermosetting lens composition, a thermosetting lens and a manufacturing method thereof, in particular to a thermosetting lens composition with high process safety, good release property, good heat resistance and high Abbe number A thermosetting lens composition, a thermosetting lens and a method for producing the same. Background technique [0002] Due to the evolution and development of technological products, the public has a huge market demand for resin lenses and glass lenses. Lenses are used in everything from spectacle lenses worn by the public to optical lenses used in optical drives or cameras. For example, common resin lenses include polycarbonate (PC) lenses, plexiglass (PMMA) resin lenses, thermosetting resin lenses (such as trade name CR-39) and the like. [0003] PC lens is polycarbonate, which is a thermoplastic material. This material has high heat resistance, resistance to oils, greases and acids, ...

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
no application Login to View More
IPC IPC(8): C08F283/00C08F222/14C08F222/20C08F220/18C08F220/14G02C7/02
CPCC08F283/008G02C7/022C08F222/103C08F222/102C08F222/1063C08F220/1812C08F222/1006
Inventor 王宏宇刘仲秋
Owner 长兴特殊材料(苏州)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com