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CN-122028971-A - Acrylate adhesive composition for the housing of spiral wound membrane filters

CN122028971ACN 122028971 ACN122028971 ACN 122028971ACN-122028971-A

Abstract

The invention features a spiral wound membrane filter including a housing including a reinforcing material and an acrylate adhesive composition including a multifunctional (meth) acrylate, wherein the adhesive composition has a viscosity of no greater than 10,000 cP when measured at 23 ℃ according to ASTM D1084 test method B.

Inventors

  • K. TUCKER
  • D. Stanzel
  • J. RYAN

Assignees

  • H.B.富乐公司

Dates

Publication Date
20260512
Application Date
20241016
Priority Date
20231016

Claims (15)

  1. 1. A spiral wound membrane filter comprising a housing, the housing comprising: a. reinforcing material, and B. an acrylate adhesive composition comprising a multifunctional (meth) acrylate, Wherein the acrylate adhesive composition has a viscosity of no greater than 10,000 cP when measured at 23 ℃ according to ASTM D1084 test method B.
  2. 2. The spiral wound membrane filter of claim 1, wherein the acrylate adhesive composition comprises: i. 15 to 60% by weight of a multifunctional (meth) acrylate oligomer, 30 To 80% by weight of (meth) acrylate monomers, and 0.2 To 5% by weight of a photoinitiator.
  3. 3. The spiral wound membrane filter of any of the preceding claims, wherein the acrylate adhesive composition has a viscosity of no greater than 2,500 cP when measured at 23 ℃ according to ASTM D1084 test method B.
  4. 4. The spiral wound membrane filter of any of the preceding claims, wherein the acrylate adhesive composition has a viscosity of no greater than 1,500 cP when measured at 23 ℃ according to ASTM D1084 test method B.
  5. 5. The spiral wound membrane filter of any of the preceding claims, wherein the acrylate adhesive composition has a shore D hardness of 60 to 100 as tested according to the shore D hardness test method.
  6. 6. The spiral wound membrane filter of claim 1, wherein the multifunctional (meth) acrylate is selected from the group consisting of (meth) acrylate oligomers, (meth) acrylate monomers, and combinations thereof.
  7. 7. The spiral wound membrane filter of claim 2, wherein the multifunctional (meth) acrylate oligomer is selected from urethane acrylates, epoxy acrylates, polyester acrylates, acrylic acrylates, polyether acrylates, polybutadiene acrylates, and combinations thereof.
  8. 8. The spiral wound membrane filter of claim 2, wherein the multifunctional (meth) acrylate oligomer comprises an aliphatic urethane acrylate.
  9. 9. The spiral wound membrane filter of claim 2, wherein the (meth) acrylate monomer comprises an isobornyl acrylate monomer.
  10. 10. The spiral wound membrane filter of claim 2, wherein the (meth) acrylate monomer comprises at least two (meth) acrylate monomers.
  11. 11. The spiral wound membrane filter of claim 10, wherein the at least two (meth) acrylate monomers comprise a monofunctional monomer and a multifunctional monomer.
  12. 12. A spiral wound membrane filter according to any preceding claim, wherein the reinforcing material is a continuous glass fibre strand.
  13. 13. The spiral wound membrane filter of any of the preceding claims, wherein the acrylate adhesive composition is a single component with 100% solids.
  14. 14. A method of manufacturing a housing for a spiral wound membrane filter comprising the steps of: a. An acrylate adhesive composition is obtained comprising a multifunctional (meth) acrylate and an initiator, having a viscosity of not more than 10,000 cP when measured at 23℃according to ASTM D1084 test method B, B. passing at least one continuous strand of reinforcing material through the acrylate adhesive composition, C. Wrapping the continuous strand around the circumference along the entire length of the spiral wound membrane filter, and D. The continuous strand of reinforcing material coated with the acrylate adhesive composition is exposed to an energy source at a time selected from the group consisting of during winding, after winding, and combinations thereof.
  15. 15. The method of claim 14, wherein the continuous strands of reinforcing material are glass fibers and the energy source is selected from the group consisting of ultraviolet light, visible light, heat, and combinations thereof.

Description

Acrylate adhesive composition for the housing of spiral wound membrane filters Background The present invention relates to the use of acrylate adhesives for forming the housing of spiral wound membrane filters. Two-component epoxy-based adhesive compositions are commonly used as structural adhesives in filters. However, the cure time of two-part epoxy-based adhesives can be as high as 12 hours. There is a need for a structural adhesive for the housing of a spiral wound membrane filter that can be cured quickly to immediately handle the filter. Disclosure of Invention SUMMARY In one aspect, the invention features a spiral wound membrane filter including a housing including a reinforcing material and an acrylate adhesive composition including 20 wt% to 90 wt% of a multifunctional (meth) acrylate, wherein the acrylate adhesive composition has a viscosity of no greater than 10,000 cP when measured at 23 ℃ according to ASTM D1084 test method B. In one aspect, the invention features a spiral wound film including a skin including a reinforcing material and an acrylate adhesive composition including 15 to 60 wt% multifunctional (meth) acrylate oligomer, 30 to 80 wt% (meth) acrylate monomer, and 0.2 to 5wt% photoinitiator, wherein the acrylate adhesive composition has a viscosity of no greater than 10,000 cP when measured at 23 ℃ according to ASTM D1084 test method B. In one embodiment, the acrylate adhesive composition has a viscosity of no greater than 5,000 cP when measured at 23 ℃ according to ASTM D1084 test method B. In another embodiment, the acrylate adhesive composition has a viscosity of no greater than 2,500 cP when measured at 23 ℃ according to ASTM D1084 test method B. In another embodiment, the acrylate adhesive composition has a Shore D hardness of D60 to D100 as measured according to the Shore D hardness (Shore D HARDNESS) test method. In one embodiment, the multifunctional (meth) acrylate is selected from the group consisting of multifunctional (meth) acrylate oligomers, (meth) acrylate monomers, and combinations thereof. In a different embodiment, the multifunctional (meth) acrylate oligomer is selected from the group consisting of urethane acrylate (urethane acrylate), epoxy acrylate (epoxy acrylate), polyester acrylate (polyester acrylate), acrylic acrylate (ACRYLIC ACRYLATE), polyether acrylate (polyether acrylate), polybutadiene acrylate (polybutadiene acrylate), and combinations thereof. In another embodiment, the multifunctional (meth) acrylate oligomer comprises an aliphatic urethane acrylate. In one embodiment, the (meth) acrylate monomers include isobornyl acrylate monomers. In a different embodiment, the (meth) acrylate monomers include at least two (meth) acrylate monomers. In a different embodiment, the at least two (meth) acrylate monomers include a monofunctional monomer and a multifunctional monomer. In one embodiment, the acrylate adhesive composition further comprises an initiator selected from the group consisting of photoinitiators, thermal initiators, and combinations thereof. In another embodiment, the acrylate adhesive composition comprises a photoinitiator including at least two different photoinitiators. In a different embodiment, the reinforcing material is selected from the group consisting of continuous strands, webs, scrims and nonwovens. In another embodiment, the reinforcing material is a continuous glass fiber strand. In one aspect, the invention features a method of making a housing for a spiral wound membrane filter that includes the steps of obtaining an acrylate adhesive composition including a multifunctional (meth) acrylate and an initiator, passing at least one continuous strand of a reinforcing material through the acrylate adhesive composition, wrapping (wrapping) the continuous strand around a periphery along the entire length of the spiral wound membrane filter, and exposing the continuous strand of reinforcing material coated with the acrylate adhesive composition to an energy source at a time selected from the group consisting of during wrapping, after wrapping, and combinations thereof. In one embodiment, the continuous strands of reinforcing material are glass fibers. In another embodiment, the energy source is selected from the group consisting of ultraviolet light, visible light, electron beam radiation, microwave radiation, heat, and combinations thereof. In a different embodiment, the energy source is selected from the group consisting of ultraviolet light, visible light, heat, and combinations thereof. The housing of a spiral wound membrane filter is typically formed by winding glass fibers coated with an uncured liquid resin (e.g., a two-component epoxy resin) around a spiral wound separator element. The filter is then cured at room temperature or exposed to a higher temperature to accelerate curing. The equipment required to mix and pump the two-part epoxy resin and the time required to cure the final filter add to the time and cost of the proces