Shock absorbing compound
View Patent ↗Disclosed is an energy absorbing compound comprising an epoxidized vegetable oil, a thermoplastic polymer and a prepolymer. The energy absorbing compound is a polymeric compound which exhibits low rebound velocity and hysteresis. The energy absorbing compound possesses good energy-attenuating properties and is capable of absorbing repeat shocks without structural damage.
1. An energy absorbing compound comprising:
at least greater than 50% by weight of an epoxidized vegetable oil;
a hydroxy functional thermoplastic elastomer; and
a prepolymer containing an isocyanate or isocyanate monomer.
2. The energy absorbing compound of claim 1 , further including an activator.
3. The energy absorbing compound of claim 2 , wherein the activator is an alkyl tin compound.
4. The energy absorbing compound of claim 1 , wherein the epoxidized vegetable oil is selected from the group consisting of soybean oil, linseed oil, and combinations thereof.
5. The energy absorbing compound of claim 1 , wherein the thermoplastic elastomer comprises a polydiene.
6. The energy absorbing compound of claim 5 , wherein the polymer is a polybutadiene.
7. An energy absorbing compound comprising of a percent weight basis of the compound:
at least greater than 50% of a vegetable based plasticizer;
between 20% and 40% of a hydroxy functional thermoplastic elastomer; and
between 5% and 20% of an isocyanate containing a prepolymer or isocyanate monomer.
8. The energy absorbing compound of claim 1 , further including between 0.1% to 5% of an activator.
9. The energy absorbing compound of claim 8 , wherein the activator is an alkyl tin compound.
10. The energy absorbing compound of claim 7 , wherein the vegetable based plasticizer is selected from the group consisting of soybean oil, linseed oil, combinations thereof and is in an amount of between 55% to 70%.