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US-20260125521-A1 - TUBE AND METHOD FOR MAKING SAME

US20260125521A1US 20260125521 A1US20260125521 A1US 20260125521A1US-20260125521-A1

Abstract

A tube includes: a substrate including a sidewall defining a lumen profile along a central axis, where the substrate includes a composition including a silicone polymer, an inorganic filler, a cross-linking component, and a catalyst, where the tube has a minimum yield strain of 5%, where the tube has a minimum tensile strength of 12 MPa, where the tube has a minimum tear strength of 15 N/mm, where the tube has a minimum toughness of 0.26 MPa, and where the tube has a minimum tensile modulus of 120 MPa.

Inventors

  • Zichao WEI
  • SHUAI LIANG
  • Michael J. Tzivanis
  • Jiezhu Jin
  • Hua Wang
  • Kendra R. WATSON

Assignees

  • SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION

Dates

Publication Date
20260507
Application Date
20251105

Claims (20)

  1. 1 . A tube comprising: a substrate forming a sidewall defining a lumen profile along a central axis, wherein the substrate comprises a composition comprising a silicone polymer, an inorganic filler, a cross-linking component, and a catalyst, wherein the tube has a minimum yield strain of 15%, wherein the tube has a minimum tensile strength of 12 MPa, wherein the tube has a minimum tear strength of 5 N/mm, wherein the tube has a minimum toughness of 0.26 MPa, and wherein the tube has a minimum tensile modulus of 120 MPa.
  2. 2 . A method comprising: providing a substrate comprising composition comprising a silicone polymer, an inorganic filler, a cross-linking component, and a catalyst; and forming a sidewall from the substrate, the sidewall defining a lumen profile along a central axis to form a tube, wherein the tube has a minimum yield strain of 5%, wherein the tube has a minimum tensile strength of 12 MPa, wherein the tube has a minimum tear strength of 15 N/mm, wherein the tube has a minimum toughness of 0.26 MPa, and wherein the tube has a minimum tensile modulus of 120 MPa.
  3. 3 . The tube according to claim 1 , wherein the silicone polymer comprises MQ resin.
  4. 4 . The tube according to claim 1 , wherein the inorganic filler comprises high specific surface area (>150-360 m 2 /g) fumed silica.
  5. 5 . The tube according to claim 1 , wherein the cross-linking component comprises interpenetrating crosslinking networks.
  6. 6 . The tube according to claim 3 , wherein the catalyst comprises Pt based catalyst.
  7. 7 . The tube according to claim 3 , wherein a tube has a Shore hardness greater than 80 Shore A and less than 65 Shore D.
  8. 8 . The tube according to claim 1 , wherein the tube has a thickness of at least 0.1 mm.
  9. 9 . The tube according to claim 1 , wherein the tube has a thickness in a range from 25 mm to 250 mm.
  10. 10 . The tube according to claim 1 , wherein the inorganic filler has a surface area of 150-360 m 2 /g.
  11. 11 . The tube according to claim 1 , wherein the catalyst has a Platinum masterbatch wt. % of 0.5-2 wt. %.
  12. 12 . The tube according to claim 1 , wherein the substrate has content of silicone polymer of at least 20 wt. %.
  13. 13 . The tube according to claim 1 , wherein the substrate has content of silicone polymer of no greater than 95 wt. %.
  14. 14 . The tube according to claim 1 , wherein the substrate has content of inorganic filler of at least 5 wt. %.
  15. 15 . The tube according to claim 1 , wherein the tube or method has a circular or oval cross-section down a central axis.
  16. 16 . The tube according to claim 1 , wherein the tube or method has an inner diameter, ID, wherein the inner diameter is at least 0.1 mm.
  17. 17 . The tube according to claim 1 , wherein the tube or method has an outer diameter, OD, wherein the outer diameter is at least 0.2 mm.
  18. 18 . The tube according to claim 5 , wherein the inorganic filler further comprises glass fiber.
  19. 19 . The tube according to claim 18 , wherein the glass fiber is in a wt. % of at least 5% and no greater than 40% wt. %.
  20. 20 . The tube according to claim 1 , wherein the tube has a minimum yield strain of 10%, such as 15%.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 63/716,428 entitled “TUBE AND METHOD FOR MAKING SAME,” filed Nov. 5, 2024, by Zichao W E I et al., which is assigned to the current assignee hereof and is incorporated herein by reference in its entirety. FIELD OF THE DISCLOSURE This application in general relates to a tube and a method for making the same, and in particular, relates to a conduit for a medical tubing. BACKGROUND Composite materials including a composition of substrates and fillers are generally known to be made into tubing for housing and moving fluid in applications such as, but not limited to, pharmaceutical manufacturing, personal care, medical device, food and beverage, fluid transfer, aerospace, vehicle, or habitat industry applications. Conventionally, in these applications, polymers were used as substrates for tubing due to their low toxicity and outstanding heat and chemical resistance performance. However, polymers have drawbacks regarding sustainability and biocompatibility. As a result, there is an ongoing need for improved composite materials for tubing having optimal values in chemical inertness, biocompatibility, elasticity, coefficient of friction, contamination resistance, and other mechanical properties, while maintaining heat and chemical resistance for their desired application. SUMMARY In a number of embodiments, a tube includes: a substrate forming a sidewall defining a lumen profile along a central axis, wherein the substrate includes a composition including a silicone polymer, an inorganic filler, a cross-linking component, and a catalyst, where the tube has a minimum yield strain of 5%, where the tube has a minimum tensile strength of 12 MPa, where the tube has a minimum tear strength of 15 N/mm, where the tube has a minimum toughness of 0.26 MPa, and where the tube has a minimum tensile modulus of 120 MPa. In another embodiment, a method includes: providing a substrate including a composition including a silicone polymer, an inorganic filler, a cross-linking component, and a catalyst; and forming a sidewall from the substrate, the sidewall defining a lumen profile along a central axis to form a tube, where the tube has a minimum yield strain of 5%, where the tube has a minimum tensile strength of 12 MPa, where the tube has a minimum tear strength of 15 N/mm, where the tube has a minimum toughness of 0.26 MPa, and where the tube has a minimum tensile modulus of 120 MPa. BRIEF DESCRIPTION OF THE DRAWINGS The present disclosure may be better understood, and its numerous features and advantages made apparent to those skilled in the art by referencing the accompanying drawings. FIG. 1A includes an illustration of an exemplary tube according to an embodiment. FIG. 1B includes an illustration of an exemplary tube according to an embodiment. The use of the same reference symbols in different drawings indicates similar or identical items. DETAILED DESCRIPTION The following description in combination with the figures is provided to assist in understanding the teachings disclosed herein. The following discussion will focus on specific implementations and embodiments of the teachings. This focus is provided to assist in describing the teachings and should not be interpreted as a limitation on the scope or applicability of the teachings. As used herein, the terms “comprises”, “comprising”, “includes”, “including”, “has”, “having” or any other variation thereof, are open-ended terms and should be interpreted to mean “including, but not limited to . . . ” These terms encompass the more restrictive terms “consisting essentially of” and “consisting of.” In a number of embodiments, a method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or inherent to such method, article, or apparatus. Further, unless expressly stated to the contrary, “or” refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present). Also, the use of “a” or “an” is employed to describe elements and components described herein. This is done merely for convenience and to give a general sense of the scope of the invention. This description should be read to include one or at least one and the singular also includes the plural, or vice versa, unless it is clear that it is meant otherwise. For example, when a single item is described herein, more than one item may be used in place of a single item. Similarly, where more than one item is described herein, a single item may be substituted for that more than one item. Unless otherwise defined, all technical and scientific terms used herein have the same meanin