Acrylates, Epoxy Acrylates and Polyester Acrylates
The following table shows the Monomers and Oligomers I have been testing. These are samples I have sourced from Sartomer and they are some of the best candidates for our UV/Visible cure resin systems. I have listed the properties the compounds should impart, leaving blanks where the information is not given/known.
Several final resin systems will result from mixing several of these monomers and oligomers as none has the best combinations of properties by it's own. There will be several resin systems as we may want to push for certain properties that are very specific for some applications or are opposing properties.
P.Ester Acryl Olig.(16) | P.Ester Acryl Olig.(16) | Ethox.(3) BP-A Diacryl. | Ethox.(4) BP-A Diacryl. | Ethox.(10) BP-A Diacryl. | Ethox.(6) BP-A Triacryl. | Di-PEG Diacryl. | Epox.(2) Soybean Oil Acryl. | |
Fast Cure | Excellent | High | Good | Good | Good | Good | Very Low | |
Photocuring Specific | Yes | Yes | Yes | Yes | Yes | Yes | ||
Abrasion Resistance | Excellent | Excellent | Good | High | Good | High | High | |
Hardness | Good | Good | Good | Good | Good | Good | Low | |
Impact Strength | Good | High | Good | High | High | |||
Heat Resistance | Good | Good | Good | |||||
Weatherability | Excellent | Excellent | Good | Good | ||||
Shrinkage | Low 9.0% | Low 7% | Low (5% ?) | Low (5% ?) | Low (5% ?) | Low (5% ?) | Low | Low (5% ?) |
Adhesion | High | Good | Good | Good | Good | Good | Good | Good |
Flexibility | High | Good | High | Good | ||||
Pigment Wetting | Good | |||||||
Chemical Resistance | Good | Good | Good | Good | Good | Good | Low | |
Cost Effectiveness | Yes | |||||||
Viscosity | Low 300 mPa.s | Good 0.4-1 Pa.s | Intermediate 1-2 Pa.s | Good 0.65-1.2 Pa.s | Good 0.61 Pa.s | Low 75-150 mPa.s | Very Low 8-14 mPa.s | High 16-26 Pa.s |
Health Riks | Skin, Eyes Low Irritant | Skin, Eyes Irritant | Eyes Irritant | Skin, Eyes Irritant | Skin, Eyes Low Irritant | Low | Skin, Eyes Irritant | Skin, Eyes Low Irritant |
Health Concerns about BPA related compounds
Managing the Concerns of BPA - Formulation
What are the possible health effects of alternative tooth filling materials?