Pultrusion with extruded gasket foam
The present teachings generally provide a system comprising a pultruded profile and a two-part system with a first component including one or more epoxy resins and a second component including one or more phosphate esters such that mixing the first component and second component forms an activatable material that activates at a temperature of about 0° C. to about 50° C. The activatable material is extruded onto the pultruded profile such that residual heat from pultrusion in the pultruded profile activates the activatable material.
1 . A system comprising:
(a) a pultruded profile; and
(b) a two-part system comprising:
(1) a first component including one or more epoxy resins;
(2) a second component including one or more phosphate esters; and
wherein, mixing the first component and second component forms an activatable material that activates at a temperature of about 0° C. to about 50° C.;
wherein the activatable material is extruded onto the pultruded profile such that residual heat from pultrusion in the pultruded profile is capable of activating the activatable material, and
wherein a reaction product of the activatable material is a gasket.
2 . The system of claim 1 , wherein the second component includes three of the one or more phosphate esters.
3 . The system of claim 1 , wherein the one or more phosphate esters includes a phosphate ester derived from cashew nut shell liquid (CNSL).
4 . The system of claim 1 , wherein the one or more phosphate esters includes a phosphate ester derived from 2-ethylhexyl glycidyl ether.
5 . The system of claim 1 , wherein the first component includes one or more first component additives.
6 . The system of claim 5 , wherein the one or more first component additives includes calcium carbonate, minerals, reinforcing fiber, hydrophobic silica, or any combination thereof.
7 . The system of claim 6 , wherein the first component includes the calcium carbonate, and wherein the calcium carbonate is present in an amount from about 15% to about 25% by weight of the first component.
8 . The system of claim 7 , wherein the calcium carbonate has a median particle size of from about 1 micron to about 50 microns.
9 . The system of claim 8 , wherein the first component includes fine calcium carbonate having a median particle size of about 4 microns in an amount from about 4% to about 8% by weight and medium fine calcium carbonate having a median particle size of about 22 microns in an amount from about 13% to about 18% by weight.
10 . The system of claim 5 , wherein the second component includes one or more second component additives.
11 . The system of claim 10 , wherein the one or more second component additives includes: minerals, reinforcing fiber, hydrophobic silica, or any combination thereof.
12 . The system of claim 1 , wherein the one or more epoxy resins include one or more liquid epoxy resins, one or more flexible epoxy resins, one or more aliphatic multifunctional epoxy resins, one or more reactive diluents, or any combination thereof.
13 . The system of claim 12 , wherein the one or more liquid epoxy resins includes a reaction product of epichlorohydrin and bisphenol A.
14 . The system of claim 13 , wherein the one or more liquid epoxy resins are present in an amount from about 6% to about 10% by weight of the first component.
15 . The system of claim 12 , wherein the one or more epoxy resins include the one or more flexible epoxy resins, and wherein the one or more flexible epoxy resins include a di-functional glycidyl ether epoxy resin, an unmodified BPA-based epoxy resin, a multifunctional epoxidized polybutadiene resin, or any combination thereof.
16 . The system of claim 12 , wherein the one or more epoxy resins include the one or more flexible epoxy resins, and wherein the one or more flexible epoxy resins are present in an amount from about 35% to about 45% by weight of the first component.
17 . The system of claim 12 , wherein the one or more epoxy resins include the one or more aliphatic multifunctional epoxy resins, and wherein the one or more aliphatic multifunctional epoxy resins include an epoxidized sorbitol.
18 . The system of claim 1 , wherein the two-part system is free of curing agents, curing accelerators, or both.
19 . The system of claim 1 , wherein the two-part system includes one or more metal carbonates or metal bicarbonates.