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Polybutylene terephthalate resin composition

A technology of polybutylene terephthalate resin and polybutylene terephthalate, applied in the field of polybutylene terephthalate resin composition, can solve mechanical problems of tensile strength and bending strength Reduced strength and other problems, to achieve the effect of excellent low moisture absorption

Inactive Publication Date: 2013-02-06
WIN TECH POLYMER LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the polybutylene terephthalate resin composition described in Patent Document 1, in order to improve the tracking resistance of the polybutylene terephthalate resin composition containing a flame retardant, a large amount of polyamide resin, but since it contains a large amount of polyamide resin, there is a problem in that compared with polybutylene terephthalate resin, mechanical strength such as tensile strength and bending strength tends to decrease

Method used

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  • Polybutylene terephthalate resin composition
  • Polybutylene terephthalate resin composition
  • Polybutylene terephthalate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~6 and comparative example 1~4

[0114] In Examples 1 to 6 and Comparative Examples 1 to 4, the following materials were used as components of the polybutylene terephthalate resin composition.

[0115] [(A) Polybutylene terephthalate resin]

[0116] A1: Polybutylene terephthalate resin with an intrinsic viscosity of 0.69 (manufactured by WinTechpolymer Ltd.)

[0117] A2: Polybutylene terephthalate resin with an intrinsic viscosity of 0.875 (manufactured by WinTechpolymer Ltd.)

[0118] [(B) Polyamide resin]

[0119] B1: Nylon 6 (made by Ube Industries, Ltd., UBENYLON (registered trademark) 1015B)

[0120] B2: Nylon 12 (manufactured by Daicel-Evonik Ltd., DAIAMID (registered trademark) X4442)

[0121] B3: Nylon 11 (made in Arkema K.K., Rilsan (registered trademark) BMNO)

[0122] [(C) Organophosphorus flame retardants]

[0123] C1: aluminum tris diethyl hypophosphite (manufactured by Clariant (Japan) K.K., EXOLIT (registered trademark) OP1240)

[0124] [(D) Nitrogen-containing flame retardant additives] ...

Embodiment 7、8、9 and 10

[0149] As Examples 7 and 8, a water absorption test was performed at a temperature of 23° C. and a relative humidity of 50%, and as Examples 9 and 10, a water absorption test was performed at a temperature of 23° C. and a relative humidity of 100%. The test pieces for the water absorption test were produced as follows: the polybutylene terephthalate resin composition obtained in Example 1 was used in Example 7 and Example 9, and the polybutylene terephthalate resin composition obtained in Example 8 and Example 10 was used. Using the polybutylene terephthalate resin composition obtained in Example 4, a sheet-shaped molded product having a size of 65 mm×55 mm×2 mm was injection-molded to produce it. The obtained test piece was vacuum-dried at 120° C. for 100 hours, and the weight of the test piece at this time was defined as the weight of the test piece at the start of the test. After measuring the weight of the test piece at the start of the test, the test piece was placed in a...

reference example 1 and 2

[0155] As Reference Example 1, a water absorption test was performed at a temperature of 23° C. and a relative humidity of 50%, and as Reference Example 2, a water absorption test was performed at a temperature of 23° C. and a relative humidity of 100%. The water absorption tests of Reference Examples 1 and 2 were performed in the same manner as in Examples 7 and 8 except that the test piece was produced using the polybutylene terephthalate resin composition obtained in Comparative Example 4. Table 2 shows the results of the water absorption test.

[0156] [Table 2]

[0157]

[0158] *: Content of the polyamide resin with respect to 100 mass parts of polybutylene terephthalate resins in a composition.

[0159] As can be seen from Table 2, compared with the tests of Reference Examples 1 and 2 using polybutylene terephthalate resin compositions that do not contain polyamide resins, using 100 parts by mass of polybutylene terephthalate In the tests of Comparative Examples 5 ...

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Abstract

Disclosed is a polybutylene terephthalate resin composition that is highly resistant to tracking, has excellent mechanical strength, exhibits low moisture absorption, and is made flame-retardant by a non-halogen-containing flame retardant. Said polybutylene terephthalate resin composition is prepared by mixing an organic phosphorus flame retardant, a nitrogen-containing auxiliary flame retardant, and 1 to 15 mass parts of a polyamide resin into 100 mass parts of a polybutylene terephthalate resin.

Description

technical field [0001] The present invention relates to a polybutylene terephthalate resin composition having excellent tracking resistance, flame retardancy and mechanical properties, and low hygroscopicity. Background technique [0002] Polybutylene terephthalate resins are widely used as engineering plastics in automotive parts, electrical ・Various applications such as electronic components. [0003] Moreover, flame retardancy and tracking resistance are generally required in applications such as automotive parts and electrical and electronic parts. For polybutylene terephthalate resin compositions, many reports on the UL of the Underwriters Laboratories -94 standard flame retardancy, tracking resistance improvement research such as comparative tracking index (CTI for short). [0004] As a specific example of a polybutylene terephthalate resin composition with improved flame retardancy and tracking resistance, for example, the following polybutylene terephthalate resin c...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K5/49C08L77/00
CPCC08K5/5313C08K5/0066C08L77/02C08K5/3492C08K5/34928C08L67/02C08L2201/02C08K13/02C08K5/521C08K5/524C08K5/5333C08K2003/321
Inventor 平川阳一末安信行
Owner WIN TECH POLYMER LTD
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