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Fiber for tire, rubber/fiber complex, and tire

A fiber and tire technology, applied in tire parts, reinforcement layers of pneumatic tires, transportation and packaging, etc., can solve problems such as high environmental burden and achieve good uniformity.

Inactive Publication Date: 2018-05-11
BRIDGESTONE CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these synthetic fibers generate a high environmental burden because they are produced from raw materials of fossil origin

Method used

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  • Fiber for tire, rubber/fiber complex, and tire
  • Fiber for tire, rubber/fiber complex, and tire
  • Fiber for tire, rubber/fiber complex, and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] A PEF composition consisting only of 100% bio-based PEF having a Mw of 75,600 and an intrinsic viscosity of 0.76 dl / g was melt spun by passing it through a 96-hole die at an extrusion temperature of 275°C and the resulting 96 The filaments are bundled into an undrawn yarn, and the undrawn yarn is continuously drawn without recycling, and then taken up to obtain PEF raw material with a fineness of 1,100 dtex (11.5 dtex per filament) yarn. The spinning draw and draw ratio are shown in Table 1 and the time from the completion of extrusion of the filament in the spinning step to the start of drawing of the undrawn yarn was 10 seconds or less.

[0127] The initial twist and final twist of the two PEF raw yarns thus obtained were twisted together at a twist of 47 turns per 10 cm length, thereby producing a fiber having a fineness of 1,100 dtex / 2, a twist of 47×47 (turns / 10cm) and Fiber for tires with a fiber count of 60 / 5 cm.

Embodiment 2～4 and comparative example 1

[0129] Fibers for tires were obtained in the same manner as in Example 1 except that the spinning draw and draw ratio were changed.

Embodiment 5

[0131] Fibers for tires were obtained in the same manner as in Example 1 except that 100% bio-based PEF having an intrinsic viscosity of 1.10 dl / g was used and the extrusion temperature was set at 310°C.

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Abstract

The objective of the invention in the present application is to provide a fiber for a tire which, when applied to a tire, provides good tire uniformity. This PEF fiber for a tire, which includes a polyethylene-2,5-furandicarboxylate (PEF) yarn, is characterized in that the PEF yarn is obtained by continuously drawing an undrawn yarn, which is formed by melt-spinning a resin composition that includes PEF, without collection, and the storage modulus of the PEF yarn is 1,300 MPa or more.

Description

technical field [0001] The present invention relates to fibers for tires, rubber / fiber composites and tires. Background technique [0002] Synthetic fibers made of nylon or polyethylene terephthalate (PET) have been widely used as fibers for reinforcing cords of tires and the like. However, these synthetic fibers pose a high environmental burden because they are produced from raw materials of fossil origin. [0003] This has led to the development of fibers produced from naturally-derived raw materials used as fibers with low environmental burdens in recent years. For example, Patent Document 1 discloses a fiber (PEF fiber) made of polyethylene 2,5-furandicarboxylate (PEF). [0004] Citation list [0005] patent documents [0006] Patent Document 1: WO2014 / 204313 Contents of the invention [0007] The problem to be solved by the invention [0008] Patent Document 1 discloses a PEF raw yarn produced by two-stage spinning / drawing. [0009] refer to figure 2 , t...

Claims

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Application Information

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IPC IPC(8): D01F6/62B60C9/00
CPCB60C9/00D01F6/62D02G3/48D01D5/16D10B2331/041B60C9/0007
Inventor 池田优二杉本健一中嶋元
Owner BRIDGESTONE CORP
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