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Efficient DLP photosensitive resin with flame retardant property

A technology of photosensitive resin and flame retardant performance, applied in the field of high-efficiency DLP photosensitive resin, can solve the problems of unusable and restricted development, and achieve the effects of reducing time cost, less environmental pollution, and high printing efficiency

Pending Publication Date: 2020-03-24
HANGZHOU LEYI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although DLP materials have many advantages, because the materials used are flammable, they cannot be used in many fields, which limits their development.

Method used

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  • Efficient DLP photosensitive resin with flame retardant property

Examples

Experimental program
Comparison scheme
Effect test

comparative example 1

[0033] In terms of mass percentage, weigh aliphatic urethane acrylate (functionality is 6): 40, cyclohexane dimethanol diacrylate: 30, dicyclopentadiene methacrylate: 15, dipentaerythritol hexaacrylate 12.5 , TPO (2,4,6-trimethylbenzoyl-diphenylphosphine oxide): 0.75, 819 (phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide): 0.75, Leveling agent: 0.3, defoamer: 0.3, nano-titanium dioxide: 0.4, after mixing all the materials together, stir in the mixer at a speed of 1800r / min for 2h, after the dispersion is uniform, ultrasonic 1~2h, until the bubbles are completely Disappear and start printing after cooling to room temperature.

[0034] The wavelength of the selected equipment is 405nm, and the light-mechanical intensity is 7000uw / cm 2 , single-layer curing time 1.5s, flammable.

comparative example 2

[0036] In terms of mass percentage, weigh aliphatic polyurethane acrylate (functionality is 6): 35, cyclohexane dimethanol diacrylate: 25, dicyclopentadiene methacrylate: 15, dipentaerythritol hexaacrylate 12.5 , TPO (2,4,6-trimethylbenzoyl-diphenylphosphine oxide): 0.75, 819 (phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide): 0.75, Leveling agent: 0.3, defoamer: 0.3, nano-titanium dioxide: 0.4, flame retardant A: 10, after mixing all the materials together, stir in a mixer at a speed of 1800r / min for 2 hours, after the dispersion is uniform, ultrasonic 1~2h, until the bubbles completely disappear, and start printing after cooling to room temperature.

[0037] The wavelength of the selected equipment is 405nm, and the light-mechanical intensity is 7000uw / cm 2 , the single-layer curing time is 1.7s, the flame retardant grade has reached V-0, and the mechanical properties of the material are poor.

Embodiment example 1

[0039] In terms of mass percentage, weigh aliphatic polyurethane acrylate (functionality is 6): 40, cyclohexane dimethanol diacrylate: 26, dicyclopentadiene methacrylate: 15, dipentaerythritol hexaacrylate 12.5 , TPO (2,4,6-trimethylbenzoyl-diphenylphosphine oxide): 0.75, 819 (phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide): 0.75, Leveling agent: 0.3, defoamer: 0.3, nano-titanium dioxide: 0.4, flame retardant A: 4, after mixing all the materials together, stir in a mixer at a speed of 1800r / min for 2 hours, and after the dispersion is uniform, ultrasonic 1~2h, until the bubbles completely disappear, and start printing after cooling to room temperature.

[0040] The wavelength of the selected equipment is 405nm, and the light-mechanical intensity is 7000uw / cm 2 , the single-layer curing time is 1.5s, and the flame retardant grade has reached V-0.

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Abstract

The invention belongs to the technical field of photocuring materials, and particularly relates to efficient DLP photosensitive resin with flame retardant property, which is composed of the followingcomponents in parts by mass: 25-50 parts of acrylate resin, 40-60 parts of a reactive diluent, 0.5-2 parts of an initiator, 1-10 parts of a flame retardant, 0.2-1 part of other assistants and 0.1-1 part of a filler. The DLP photosensitive resin material provided by the invention can be subjected to a polymerization reaction to complete curing when the wavelength is 380-410 nm, and has a good flameretardant effect, the adopted flame retardant is halogen-free and low in environmental pollution, the reactive diluent and an oligomer with high functionality are adopted, the printing efficiency ishigh, the time cost is greatly reduced, and the DLP photosensitive resin material can be widely applied to the fields with flame-retardant requirements on materials.

Description

technical field [0001] The invention belongs to the technical field of photocurable materials, and in particular relates to a high-efficiency DLP photosensitive resin with flame-retardant properties. Background technique [0002] Photocuring technology has the characteristics of high efficiency, energy saving, wide applicability, economy and environmental protection, etc. It has been applied in many fields, especially in the field of 3D printing. DLP technology mainly uses DLP projection to project light onto the surface of 3D printing materials in the form of a surface. It is generally suitable for small and small parts. Therefore, compared with SLA, its printing speed is faster, the accuracy is higher, and the surface effect is also better. it is good. [0003] Although DLP materials have many advantages, because the materials used are inflammable, they cannot be used in many fields, which limits their development. Aiming at this problem, the present invention develops a...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F222/14C08F222/20C08F2/48
CPCC08F283/008C08F2/48C08F222/1006
Inventor 李春嘉陈遒张小敏
Owner HANGZHOU LEYI NEW MATERIAL TECH CO LTD
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