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Thermosetting resin composition

A resin composition and thermosetting technology, applied in the field of thermosetting resin compositions and their cured products, can solve problems such as lack of allowable bending rate, and achieve the effects of excellent bending rate and good mechanical strength

Inactive Publication Date: 2021-09-17
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the mechanical strength, especially the modulus of elasticity, of resin concrete and resin mortar is too high, there is a problem that it cannot follow the displacement with respect to external pressure, and cracks and fractures occur at an early stage, that is, the allowable bending rate is lacking.

Method used

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  • Thermosetting resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0143] Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited thereto.

[0144] The raw materials used for the manufacture of each thermosetting resin composition of the following Examples and Comparative Examples are as follows.

[0145]

[0146] (manufacture of unsaturated polyester)

[0147] Into a 1L flask equipped with a stirrer, a fractional condenser, a thermometer, and a nitrogen inlet tube, add 191 g of propylene glycol, 164 g of diethylene glycol, 64 g of isophthalic acid, and 64 g of terephthalic acid, and react at 215°C while heating and stirring. After 5 hours, cool down to 120°C. 189 g of maleic anhydride and 0.04 g of tert-butylhydroquinone were added thereto, reacted at 215° C. while heating and stirring, cooled when the acid value became 20 mgKOH / g, added 0.05 g of hydroquinone, 0.02 g of copper naphthenate, 400 g of styrene monomers and 1,000 g of mixture AB-1 containing 60% by mass o...

Embodiment 2～9、 comparative example 1～3

[0175] With the compounding composition shown in the following Table 1, it carried out similarly to Example 1, and each thermosetting resin composition was obtained.

[0176] "Evaluation of Thermosetting Resin Compositions"

[0177] With regard to the thermosetting resin compositions produced in the above-described Examples and Comparative Examples, evaluations on the following items were performed.

[0178] (curing of thermosetting resin composition)

[0179] The thermosetting resin compositions produced in the above-mentioned examples and comparative examples were injected into tubes made of rigid polyvinyl chloride with an outer diameter of 76 mm, a thickness of 2.2 mm, and a tube made of rigid polyvinyl chloride with an outer diameter of 89 mm and a thickness of 2.7 mm, and organic resins with a thickness of 3.8 mm. A tubular mold made of a silicone resin spacer was left at 23° C. for 3 days to obtain a cured product of a tubular thermosetting resin composition with an ou...

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Abstract

The present invention addresses the problem of providing a thermosetting resin composition with which it is possible to obtain a cured product that has good mechanical strength and can follow displacement with respect to external pressure. [Solution] The thermosetting resin composition containisa thermosetting resin (A), an ethylenically unsaturated compound (B), and a polyol (C), the polyol (C) having a molecular weight or a number average molecular weight of 62-950 (inclusive).

Description

technical field [0001] The present invention relates to a thermosetting resin composition and its cured product. Background technique [0002] Thermosetting resin composition is used in molding materials, adhesives, primers, coatings, repair materials for inorganic structures such as concrete cross-section repair, crack injection, and water sealing, filler materials, gap fillers, and fiber-reinforced composite materials used in a wide range of applications. Among them, thermosetting resin compositions containing radically polymerizable resins such as unsaturated polyesters, vinyl esters, and urethane (meth)acrylates have moldability, curability, and adhesion to substrates, etc. advantages, so it is widely used in the above fields. [0003] In order to improve the mechanical strength of the cured product, it may be used as a composition obtained by mixing a thermosetting resin and an inorganic aggregate. Such a material is called resin concrete or resin mortar, and has the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F283/10C08F212/08C08K3/22C08K3/36
CPCC08F283/01C08F283/105C08K3/22C08K3/36C08K2003/2227C08F212/08
Inventor 宇佐美彬西岛大辅
Owner SHOWA DENKO KK