Modified polyolefin-based resin for treating glass fiber, surface-treated glass fiber and fiber-reinforced polyolefin-based resin

一种聚烯烃类树脂、酸改性聚烯烃的技术，应用在薄料处理、运输和包装等方向，能够解决界面研究、研究例子少、未能得到优异性能等问题，达到高可靠性、振动疲劳强度提高的效果

Active Publication Date: 2007-10-17
PRIME POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, the treatment of glass fibers and the composition of the resin composition (glass fiber-reinforced polypropylene) blended with the glass fibers have been studied separately. There are few examples of the combination of the treatment of glass fibers and the composition of the resin composition, and excellent results have not been obtained. performance (for example, refer to Patent Document 3)
[0004] In addition, although studies have been made on improving the vibration fatigue strength (for example, refer to Patent Documents 4 and 5), they are mainly studies on the molecular weight of the polypropylene resin portion, and have not studied the glass-resin interface, especially the sizing agent. Polyolefins used in research

Method used

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  • Modified polyolefin-based resin for treating glass fiber, surface-treated glass fiber and fiber-reinforced polyolefin-based resin
  • Modified polyolefin-based resin for treating glass fiber, surface-treated glass fiber and fiber-reinforced polyolefin-based resin
  • Modified polyolefin-based resin for treating glass fiber, surface-treated glass fiber and fiber-reinforced polyolefin-based resin

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0129] (I-4) Preparation method of acid-modified polyolefin resin

[0130] As a method for preparing acid-modified polyolefin resins (polyolefin resins containing functional groups), Japanese Patent Application Laid-Open No. 8-143739, Japanese Patent Application Publication No. 2002-20560, Japanese Patent Application Publication No. 7-316239, Known methods described in Japanese Patent Laid-Open No. 8-127697 and Japanese Patent Laid-Open No. 7-232324.

[0131] The preparation method is not particularly limited. When the maleic acid modified polypropylene resin is prepared, for example,

[0132] (1) Reacting organic peroxides, maleic acid, and polypropylene in a solvent (solution method);

[0133] (2) Use Banbury mixer or extruder to melt and mix organic peroxide, maleic acid and polypropylene (melting method);

[0134] (3) Methods such as reacting maleic acid with thermally decomposed polypropylene (thermal decomposition method), (1) solution method, (3) thermal decomposition metho...

preparation example 1

[0292] Preparation Example 1: Acid-modified polypropylene resin for treating glass fiber

[0293] (1) Preparation of maleic acid modified polypropylene (EM)

[0294] (1-1) Modification method-1: Melting method (EM-1~9, EM-11 and EM-12)

[0295] As shown in Table 2 below, polypropylene, maleic acid, and organic peroxide were put into a twin-screw extruder with vents, and melt-kneaded under specified conditions to obtain maleic acid-modified polypropylene.

[0296] The components that can be extracted with boiling methyl ethyl ketone contained in the obtained maleic acid-modified polypropylene are removed by the following purification method or washing method.

[0297] (1-2) Purification method (EM-1~8)

[0298] The maleic acid-modified polypropylene obtained above was heated (about 130°C) while stirring in p-xylene to completely dissolve it, and the solution was poured into methyl ethyl ketone for reprecipitation. After filtration, vacuum drying (130°C x 6 hours) was performed.

[...

manufacture example 2

[0364] Production Example 2: Production of surface-treated glass fiber (GFEM)

[0365] As shown in Table 4 below, a sizing agent containing maleic acid-modified polypropylene and a silane coupling agent for glass fiber treatment prepared by the above-mentioned production example 1 was used to treat E-glass fibers with a diameter of 17 μm (specific gravity 2.55 g / cm 3 ) After heating and drying, the roving is made.

[0366] [Table 4]

[0367] Sizing agent

Of treated glass fiber

EM adhesion amount

(Mass%)

A silane coupling agent

(CP)

Surface treatment resin

(EM)

Proportion

EM / CP

GFEM-1

CP-1

EM-1

6

0.40

GFEM-2

CP-1

EM-1

6

0.40

GFEM-3

CP-2

EM-1

6

0.40

GFEM-4

CP-1

EM-2

6

0.40

GFEM-5

CP-1

EM-3

6

0.40

GFEM-6

CP-1

EM-4

6

0.40

GFEM-7

CP-1

EM-5

6

0.40

...

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Abstract

The present invention provides a modified polypropylene fiber for treating a glass fiber, giving a molded article remarkably improved in its vibration fatigue strength, a surface-treated glass fiber and fiber-reinforced polypropylene-based resin. This modified polyolefin-based resin for treating the glass fiber is provided with that (1) its amount extracted by boiling methyl ethyl ketone is <=8 mass%, (2) its number-average molecular weight (Mn) measured by a gas permeation chromatography (GPC) is 6,000-48,000 and (3) the amount of added acid measured by a Fourier transform infrared spectroscopy is within 0.1-12 mass% range.

Description

Technical field [0001] The present invention relates to modified polyolefin resins, surface-treated glass fibers and fiber-reinforced polyolefin resins for treating glass fibers. In more detail, it relates to modified polyolefin resins (also called film forming agents, film forming agents, sizing agents (clustering agents), etc.) for processing glass fibers that can provide molded products with significantly improved vibration fatigue strength , Surface treatment of glass fiber and fiber reinforced polyolefin resin. Background technique [0002] For glass fiber reinforced polypropylene (GFPP), it has been widely known for a long time that glass fibers treated with aminosilane are used, and the addition of polypropylene containing carboxylic acid groups can increase the strength. In addition, it is also known to use acid-modified polyolefins when processing glass fibers. However, for the acid-modified polyolefin used, the research on the impregnation and adhesion is the main focus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/46C08K9/04B29B9/06C08L23/00C08F6/00C08L101/00C08J5/08
CPCC08L51/06C08F255/02C08J5/08Y10T428/249946Y10T428/2982Y10T428/2933Y10T428/24994C08L23/26C08J2323/10Y10T428/249944Y10T428/2964C08F6/10C08L51/00B29B9/14C08K7/14C08L23/10C08F6/28C08F222/02C08L2666/24C08L2666/06
Inventor 矢野公规大西陆夫
Owner PRIME POLYMER CO LTD
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