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Photocuring resin and preparation method thereof

A light-curing resin and diisocyanate technology, applied in the field of light-curing resin and its preparation, can solve the problems of poor surface drying and high curing energy, and achieve the effects of simple reaction process, low production cost and good surface drying

Inactive Publication Date: 2011-10-26
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of high curing energy and poor surface dryness of photocurable materials in the prior art, the present invention provides a photocurable resin and its preparation method to achieve the purpose of low curing energy and good surface dryness

Method used

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  • Photocuring resin and preparation method thereof
  • Photocuring resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Vacuumize 100g of HTPB at 110°C (vacuum degree ≤ -0.08MPa) for 2 hours to remove the doped water; then cool down to 50°C, add 28.5g of TDI, and heat up to 85°C for 2 hours after the temperature is constant , until the NCO content reaches the design value (the design value is not the same, it is determined by the weight of the added HTPB and diisocyanate, the amount of the added substance is fixed, and the design value is fixed here) when the heating is stopped, that is, the two ends are NCO Group of polyurethane prepolymers:

[0024] After mixing 100g of polyurethane prepolymer with end-capping agent (a mixture of 4.2g of hydroxyethyl acrylate and 1.5g of mercaptoethanol), they were reacted at 70°C for 2 hours to obtain mercaptan-modified HTPB (hydroxyl-terminated polybutadiene ) type polyurethane acrylate.

Embodiment 2

[0026] Vacuumize 100g of HTPB at 100°C (vacuum degree ≤ -0.08MPa) for 3 hours to remove the doped water; then cool down to 60°C, add 24g of IPDI, and heat up to 80°C for 3 hours after the temperature is constant. Stop heating until the NCO content reaches the design value, and obtain a polyurethane prepolymer with NCO groups at both ends.

[0027] After mixing 100g of polyurethane prepolymer with end-capping agent (2g of hydroxyethyl methacrylate, 2.2g of hydroxyethyl acrylate and 2g of 6-mercaptohexan-1-ol), react at 60°C for 3 hours, A thiol-modified HTPB (hydroxyl-terminated polybutadiene) type polyurethane acrylate is obtained.

Embodiment 3

[0029] Vacuumize 100g of HTPB at 115°C (vacuum degree ≤ -0.08MPa) for 1.5 hours to remove the doped water; then cool down to 40°C, add 20g of MDI and 12g of IPDI, and heat up to 90°C for reaction after the temperature is constant After 1 hour, stop heating until the NCO content reaches the design value, and obtain a polyurethane prepolymer with NCO groups at both ends.

[0030] After mixing 100g polyurethane prepolymer with end-capping agent (the mixture of 4.3g hydroxypropyl acrylate and 3.1g 3-mercapto-1-hexanol), react at 80°C for 1 hour to obtain thiol-modified HTPB ( Hydroxyl-terminated polybutadiene) type polyurethane acrylate.

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Abstract

The invention discloses a photocuring resin and a preparation method thereof. The photocuring resin is characterized in that the photocuring resin is thiol-modified hydroxyl-terminated polybutadiene (HTPB) type polyurethane acrylate the structural formula of which is shown in a general formula (I), wherein R represents one or more of toluene diisocynate, isophorone diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate, R1 represents one or more of -C2H4-, -C3H6- and C4H8-, R2 represents one or two of -H and -CH3, and R3 represents one or more of mercaptoethanol, 6-mercaptohexan-1-ol, 3-sulfydryl-1-hexyl alcohol, 16-mercaptohexadecan-1-ol and thiol.

Description

technical field [0001] The invention belongs to the field of light-curing materials, relates to a light-curing resin and a preparation method thereof, and is suitable for occasions requiring low curing energy. Background technique [0002] Light-curing materials have been widely studied due to their outstanding advantages such as fast curing speed, environmental friendliness, low energy consumption, and no solvent volatilization, and they are rapidly promoted in various industries. However, the light-curing materials of conventional polyurethane acrylates have their own limitations, and the curing energy is generally 1000mj / cm 2 Above, in the occasions that require low curing energy, such as 500mj / cm2 or lower curing energy, it is difficult for ordinary polyurethane acrylate systems to meet the requirements; Often the table does not dry well. Contents of the invention [0003] In order to solve the problems of high curing energy and poor surface dryness of photocurable m...

Claims

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Application Information

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IPC IPC(8): C08G18/69C08G18/67C08G18/65C08G18/38C08G18/10
Inventor 潘光君王建斌陈田安
Owner YANTAI DARBOND TECH
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