Polyarylene sulfide resin composition

A technology of polyarylene sulfide and resin composition, which is applied in the field of polyarylene sulfide resin composition, can solve the problems of reduced mechanical properties, lack of sufficient functional groups, low adhesion of filling materials, etc., and achieve high melting point, The effect of dramatic improvement in chemical resistance

Active Publication Date: 2018-09-25
TORAY IND INC
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the reaction of dichlorobenzene and a vulcanizing agent in the general production method of PPS, which is a representative of PAS, benzene rings and sulfur are the main components in the main chain skeleton, and there are not enough functional groups. There is a limit to the improvement of the reinforcement effect of the filler material brought by the permanent compound
In addition, PAS itself is a polymer with excellent chemical resistance, but when it is made into a resin composition, since the adhesiveness of the filler is low, there is a problem that the mechanical properties are greatly reduced after chemical treatment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyarylene sulfide resin composition
  • Polyarylene sulfide resin composition
  • Polyarylene sulfide resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0171] Hereinafter, the method of the present invention will be described more concretely by way of examples and comparative examples, but the present invention is not limited only to these examples. In addition, the measuring method of a physical property is as follows.

[0172] [Carboxyl content]

[0173] The carboxyl group content of the PAS resin was calculated using a Fourier transform infrared spectrometer (hereinafter abbreviated as FT-IR).

[0174] First, measure benzoic acid as a standard substance by FT-IR, and read 3066 cm as the absorption of the C-H bond of the benzene ring -1 The absorption intensity of the peak (b1) and 1704cm as the absorption of the carboxyl group -1 From the absorption intensity (c1) of the peak of , the amount of carboxyl group (U1) relative to one unit of the benzene ring was obtained, (U1)=(c1) / [(b1) / 5]. Next, the PAS resin was melt-pressed at 320° C. for 1 minute, then quenched, and FT-IR measurement of the resulting amorphous film was...

Synthetic example 1

[0200] [Synthesis Example 1 (Synthesis of PPS-1)]

[0201] In a 70-liter autoclave with a stirrer and a bottom plug valve, add 47.5% sodium hydrosulfide 8.26kg (70.00 moles), 96% sodium hydroxide 3.03kg (72.69 moles), N-methyl-2-pyrrolidone (NMP ) 11.45 kg (115.50 moles) and 5.50 kg of ion-exchanged water, while passing nitrogen gas under normal pressure, the reaction vessel was slowly heated to 225° C. for about 3 hours to perform the dehydration process. Heating was terminated when 9.82 kg of water and 0.28 kg of NMP distilled out, and cooling was started. The amount of water remaining in the system per 1 mol of the alkali metal hydrosulfide added at this time was 1.01 mol including the water consumed by the hydrolysis of NMP. In addition, since the amount of hydrogen sulfide scattered was 1.4 mol, the amount of the sulfidizing agent in the system after this dehydration step was 68.6 mol. In addition, 1.4 moles of sodium hydroxide were regenerated in the system with the sc...

Synthetic example 2

[0208] [Synthesis Example 2 (Synthesis of PPS-2)]

[0209] The same operation as in Synthesis Example 1 was performed except that Step 1 and Step 2 were performed under the following reaction conditions.

[0210] The temperature was raised from 230°C to 238°C over 13 minutes at 0.6°C / min. The reaction was performed at a constant temperature of 238°C for 128 minutes, and then the temperature was raised from 238°C to 245°C over 9 minutes at 0.8°C / min. T1 is 188 minutes and T1a is 150 minutes. The conversion of p-DCB was 94.5%.

[0211] Following Step 1, the temperature was raised from 245°C to 255°C over 12 minutes at 0.8°C / min. The polymerization time (T2) of the process 2 was 12 minutes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

To provide a polyarylene sulfide resin composition including: (A) a polyarylene sulfide resin having a carboxyl group content of more than 100 µmol / g and less than 400 µmol / g, and also having a weight average molecular weight of 10,000 or more and less than 100,000; and (B) a filler. The present invention provides a polyarylene sulfide resin composition having improved mechanical properties and chemical resistance while maintaining intrinsic high melting point of a polyarylene sulfide.

Description

technical field [0001] The present invention relates to a polyarylene sulfide resin composition having dramatically improved mechanical properties and chemical resistance while maintaining the inherent high melting point of polyarylene sulfide. Background technique [0002] Polyarylene sulfide (hereinafter referred to as PAS), represented by polyphenylene sulfide (hereinafter referred to as PPS), has excellent heat resistance, barrier properties, chemical resistance, electrical insulation, and heat and humidity resistance. Appropriate properties are used for various electrical and electronic parts, mechanical parts, automotive parts, films, fibers, etc., mainly for injection molding and extrusion molding. [0003] Among them, in injection molding applications, fillers are often added in order to express various properties such as high strength and improvement of electrical properties. In particular, for the purpose of increasing strength, it is widely known to add reactive ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/02C08K5/5415C08K7/02C08L23/02
CPCC08L23/02C08L81/04C08K5/5415C08K7/02C08K5/5419C08K7/14
Inventor 东原武志松本英树斋藤圭奥长健一
Owner TORAY IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap