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Water-based modified polyurethane composite material and preparation method thereof

A composite material, water-based modification technology, applied in the field of 3D printing materials, can solve problems such as inability to overcome the warping and deformation of workpieces, and achieve the effect of being conducive to large-scale industrial production, simple process, and no appearance defects

Inactive Publication Date: 2020-05-01
佛山市三水联美化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane resin is one of the commonly used materials in 3D printing technology. It has the characteristics of high hardness, high strength, and good bonding. However, it still cannot overcome the defects of high shrinkage and warping deformation of the workpiece during the resin polymerization process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A water-based modified polyurethane composite material, which comprises the following raw material components by weight: 20 parts of bio-based isophorone diisocyanate modified by partially esterified styrene maleic anhydride copolymer with hydroxyl groups, 90 parts Castor oil, 10 parts of modified polyvinyl chloride, 5 parts of silane coupling agent, 1 part of ketone oxime, 2 parts of nano-silica, 0.5 parts of pigment.

[0021] Wherein, the preparation method of the modified polyvinyl chloride is: polyvinyl chloride, polyvinyl alcohol, polyethylene glycol, starch and copper sulfate are added to the ball mill according to the ratio of parts by mass of 16:20:15:10:0.5 In the process, the rotation speed of the cylinder is 21r / min, and the reaction is maintained at a system temperature of 27°C for 20 minutes. Water with a mass fraction ratio of 26 is added to the ball mill, and the ball milling reaction is continued for 15 minutes while maintaining the above reaction conditi...

Embodiment 2

[0026] A water-based modified polyurethane composite material, which comprises the following raw material components by weight: 50 parts of bio-based hexamethylene diisocyanate modified by partially esterified styrene maleic anhydride copolymer with hydroxyl groups, 45 parts Castor oil modified polyol, 25 parts of modified polyvinyl chloride, 1 part of silane coupling agent, 5 parts of caprolactam, 1 part of carbon nanotube, 3 parts of pigment.

[0027] Wherein, the preparation method of the modified polyvinyl chloride is: polyvinyl chloride, polyvinyl alcohol, polyethylene glycol, starch and copper sulfate are added to the ball mill according to the ratio of parts by mass of 16:20:15:10:0.5 In the process, the rotation speed of the cylinder is 28r / min, the reaction is maintained at 20°C for 20min, the water with a mass fraction ratio of 37 is added to the ball mill, and the ball milling reaction is continued for 15min while maintaining the above reaction conditions, and the pr...

Embodiment 3

[0032] A water-based modified polyurethane composite material, which comprises the following raw material components by weight: 35 parts of bio-based isophorone diisocyanate modified by partially esterified styrene maleic anhydride copolymer with hydroxyl groups, 60 parts Bio-based 1,3-propylene glycol polyether polyol, 20 parts of modified polyvinyl chloride, 3 parts of silane coupling agent, 3 parts of 3,5-dimethylpyrazole, 1.5 parts of carbon nanotubes, 2 parts of pigment.

[0033] Wherein, the preparation method of the modified polyvinyl chloride is: polyvinyl chloride, polyvinyl alcohol, polyethylene glycol, starch and copper sulfate are added to the ball mill according to the ratio of parts by mass of 16:20:15:10:0.5 In the process, the rotation speed of the cylinder is 25r / min, the reaction is maintained at 25°C for 20min, the water with a mass fraction ratio of 30 is added to the ball mill, and the ball milling reaction is continued for 15min while maintaining the above...

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PUM

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Abstract

The invention discloses a water-based modified polyurethane composite material. The material comprises the following raw material components in parts by weight: 20-50 parts of modified bio-based isocyanate, 45-90 parts of bio-based polyol, 10-25 parts of modified polyvinyl chloride, 1-5 parts of a silane coupling agent, 1-5 parts of an end-capping reagent, 1-2 parts of nanoparticles and 0.5-3 parts of a pigment. Bio-based raw materials are introduced, the composite modification of the bio-based isocyanate is realized by selecting the modified bio-based isocyanate and adding the modified polyvinyl chloride and the nanoparticles, and the modified bio-based isocyanate has the excellent comprehensive performance, so that the prepared water-based modified polyurethane composite material has excellent strength, hardness and compression resistance, and a workpiece prepared through 3D printing is low in shrinkage rate and free of appearance defects. The invention also discloses a preparation method of the water-based modified polyurethane composite material, and the preparation method is simple in process, environment-friendly, non-toxic and beneficial to large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, in particular to a water-based polyurethane composite material and a preparation method thereof. Background technique [0002] 3D printing technology has the characteristics of not being limited by the complexity of parts, and complete digital control. It has been widely used in the fields of point addition, automobiles, construction machinery, and aerospace. Polyurethane resin is one of the commonly used materials in 3D printing technology. It has the characteristics of high hardness, high strength, and good bonding. However, it still cannot overcome the defect of high shrinkage that causes workpiece warping and deformation during the resin polymerization process. In addition, the current 3D printing materials are all developing towards green, environment-friendly, resource-saving, etc., and it is imperative to develop environmentally friendly and biodegradable 3D printing material...

Claims

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Application Information

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IPC IPC(8): C08L75/14C08L27/06C08K3/36C08K3/30C08K5/54C08K3/04C08K13/02C08G18/75C08G18/66C08G18/62C08G18/48C08G18/64C08G18/36C08G18/28C08G18/12B33Y70/10
CPCB33Y70/00C08G18/12C08G18/286C08G18/36C08G18/4081C08G18/4833C08G18/6212C08G18/6484C08G18/6696C08G18/755C08K2003/3045C08K2201/011C08L75/14C08L27/06C08K3/36C08K3/30C08K5/54C08K3/041C08K13/02C08G18/40
Inventor 谢昇华徐晨昱曾传霖
Owner 佛山市三水联美化工有限公司