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CN-122011758-A - Fiber reinforced polymer composition

CN122011758ACN 122011758 ACN122011758 ACN 122011758ACN-122011758-A

Abstract

The present invention provides fiber reinforced polymer compositions. The present invention relates to a fiber reinforced thermoplastic molding composition comprising a thermoplastic polymer and reinforcing fibers, wherein the composition comprises (i) a thermoplastic polymer selected from the group consisting of polyesters, polyamides, polycarbonates, polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyetheretherketone (PEEK), polyaryletherketone (PAEK), polyamideimide (PAI), polyetherimide (PEI) and Liquid Crystal Polymer (LCP), and combinations thereof, and (ii) a silicon-boron glass fiber consisting essentially of silica (SiO 2 ) and diboron trioxide (B 2 O 3 ).

Inventors

  • LIAO RUOGU
  • Frank Peter Theodorus Johannes Vanderberg

Assignees

  • 恩骅力有限公司

Dates

Publication Date
20260512
Application Date
20180328
Priority Date
20170410

Claims (14)

  1. 1. A composition comprising a thermoplastic polymer and glass fibers, wherein the composition comprises: (i) A thermoplastic polymer selected from the group consisting of Polyester (PES), polyamide (PA), polycarbonate (PC), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyetheretherketone (PEEK), polyaryletherketone (PAEK), polyamideimide (PAI), polyetherimide (PEI), and Liquid Crystal Polymer (LCP), and combinations thereof; (ii) At least 22 wt.% of silica-boron glass fibers comprising essentially silicon dioxide (SiO 2 ) and diboron trioxide (B 2 O 3 ), and (Iii) 0 to 7% by weight of a halogen-free flame retardant, Wherein weight percent (wt%) is relative to the total weight of the composition.
  2. 2. The composition of claim 1, wherein the thermoplastic polymer comprises a polyamide or a semi-crystalline polyester, or a combination thereof.
  3. 3. The composition of claim 1 or 2, wherein the silicon-boron glass fiber comprises silica and diboron trioxide in a combined amount of at least 90% by weight relative to the weight of the silicon-boron glass fiber.
  4. 4. The composition of claim 3 wherein the silica-boron glass fiber consists of (a) 65-85 weight percent SiO 2 , (B) 15-30 weight percent B 2 O 3 , (c) 0-4 weight percent sodium oxide (Na 2 O) or potassium oxide (K 2 O) or a combination thereof, and (d) 0-4 weight percent other ingredients, wherein weight percent (weight%) is relative to the weight of the silica-boron glass fiber.
  5. 5. The composition of any of claims 1-4, wherein the composition comprises E-glass fibers in an amount of up to 30 wt%, preferably up to 15 wt%, relative to the weight of the silicon-boron glass fibers.
  6. 6. The composition of any one of claims 1-5, wherein the composition comprises: a) 30-75 wt.% of the thermoplastic polymer of group (i); b) 25-70 wt% of the silica-boron glass fiber, and C) 0 to 7% by weight of a halogen-free flame retardant, Wherein weight percent (wt%) is relative to the total weight of the composition.
  7. 7. The composition of any one of claims 1-5, wherein the composition comprises: a) 30-75 wt% of a polyamide or semi-crystalline polyester, or a combination thereof; b) 25-70% by weight of glass fibers containing at least 22% by weight of said silica-boron glass fibers, and C) 0 to 7% by weight of a halogen-free flame retardant, Wherein weight percent (wt%) is relative to the total weight of the composition.
  8. 8. The composition of any of claims 1-7, wherein the composition comprises a polymeric impact modifier.
  9. 9. The composition of any of claims 1-8, wherein the composition comprises a Laser Direct Structuring (LDS) additive.
  10. 10. The composition of any of claims 1-9, wherein the composition further comprises a white pigment comprising titanium dioxide.
  11. 11. A molded part comprising the composition of any one of claims 1-10.
  12. 12. Use of the composition according to any of claims 1-10 or a molded part comprising the composition according to any of claims 1-10 in a housing or frame of an electronic mobile device.
  13. 13. An electronic mobile device comprising a housing or frame, wherein the housing or frame is made of the composition of any one of claims 1-10.
  14. 14. Use of the composition according to any of claims 1-10 or a molded part comprising the composition according to any of claims 1-10 in a loudspeaker enclosure, an audio jack module, an antenna or a part of a connector.

Description

Fiber reinforced polymer composition The present application is a divisional application of the application patent application with the name of "fiber reinforced polymer composition" with the application number of 201880019341.X, the application date of which is 28 of 2018, 03. Technical Field The present invention relates to a composition comprising a thermoplastic polymer and reinforcing fibers, in particular comprising glass fibers as reinforcing fibers. The invention also relates to the use of the composition as a thermoplastic molding composition, and to the use of the composition in, for example, electronic mobile devices such as housings or frames made of thermoplastic molding compositions, or in molded parts for electronic components such as speaker boxes, audio jack modules, antennas, connectors (e.g., automotive connectors, DDR4 connectors), and splitter applications. Background Thermoplastic molding compositions are useful for shaping into molded parts for a wide range of applications. Typically, such compositions are reinforced with reinforcing fibers to increase the mechanical properties of the molded part, such as tensile modulus, tensile strength, elongation at break, flexural strength, flexural fracture and impact resistance. For reinforcing fibers, glass fibers, carbon fibers or a combination thereof are generally used. Among them, glass fibers are most widely used. Glass fibers are mostly E-type glass. One problem with such reinforcing compositions is that it is difficult to obtain an appropriate balance in properties, and modulus and strength can generally be increased, for example, by increasing the amount of glass fibers, but this may be at the expense of elongation at break and impact resistance. On the other hand, elongation at break and impact resistance can be improved by adding impact modifiers, but this may come at the expense of tensile strength and other properties (e.g., chemical resistance). An alternative way to improve the properties is to use glass fibers with different shapes, such as flat glass fibers and glass fibers with an elliptical cross section. In addition, the presence of abrasive components such as titanium dioxide and Laser Direct Structuring (LDS) additives can reduce the effectiveness of the glass fibers as reinforcing agents. Disclosure of Invention The object of the present invention is to provide a thermoplastic molding composition comprising a thermoplastic polymer and reinforcing fibers, which thermoplastic molding composition has good mechanical properties, in particular a combination of high elongation with good impact properties and good tensile strength, preferably a combination of high elongation and high impact properties with good tensile strength. This object has been achieved by a composition according to the invention comprising: (i) A thermoplastic polymer selected from the group consisting of Polyester (PES), polyamide (PA), polycarbonate (PC), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyaryletherketone (PAEK), polyetheretherketone (PEEK), polyamideimide (PAI), polyetherimide (PEI), and Liquid Crystal Polymer (LCP), and combinations thereof; (ii) At least 22 wt.% of silica-boron glass fibers comprising essentially silicon dioxide (SiO 2) and diboron trioxide (B 2O3), and (Iii) 0 to 7% by weight of a halogen-free flame retardant, Wherein weight percent (wt%) is relative to the total weight of the composition. The effect of the composition according to the invention is an increase in tensile elongation and a largely maintained tensile strength, but also frequently an increase in impact resistance, compared with a corresponding composition comprising E-glass based reinforcing fibers. In addition to silica-boron glass fibers, the composition according to the invention may comprise E-glass fibers. The advantage of this composition is better tensile elongation compared to a corresponding composition having the same amount of glass fibers consisting entirely of E-glass fibers. Preferably, the E-glass fibers, if present, are present in an amount of at most 30 wt%, preferably at most 15 wt%, relative to the weight of the silica-boron glass fibers. The composition comprises a thermoplastic polymer selected from the group consisting of Polyester (PES), polyamide (PA), polycarbonate (PC), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polyaryletherketone (PAEK), polyetheretherketone (PEEK), polyamideimide (PAI), polyetherimide (PEI), and Liquid Crystal Polymer (LCP), and combinations thereof. This group is referred to herein as group (i). Suitably, the thermoplastic polymer is a semi-crystalline polymer or an amorphous polymer, or a combination thereof. Examples of amorphous polymers are polycarbonates and amorphous semi-aromatic polyamides. Examples of semi-crystalline polymers are semi-crystalline polyesters, aliphatic polyamides and semi-crystalline semi-aromatic polyamides. "Fiber" is understood herein as an elongated body hav