Unsaturated-acid modified nano composite polyester resin material and preparation method thereof

A polyester resin and nano-composite technology, applied in the field of resin composite materials, can solve problems such as difficulty in exerting the function of nano-materials, improving resin performance, and affecting the production of unsaturated polyester, so as to facilitate industrial production and improve mechanical properties and heat resistance, and the effect of improving compatibility

Inactive Publication Date: 2014-10-01
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of this patent is: adding nanoparticles in the production process, because there are a large number of hydroxyl groups on the surface of the nanoparticles, it will react with fatty acids on the surface, thus affecting the production of unsaturated polyester, the operation is difficult to control, and the stability of the product cannot be guaranteed
The main disadvantages of this patent are: (1)

Method used

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  • Unsaturated-acid modified nano composite polyester resin material and preparation method thereof
  • Unsaturated-acid modified nano composite polyester resin material and preparation method thereof
  • Unsaturated-acid modified nano composite polyester resin material and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0026] Example 1

[0027] The components and mass percentages of an unsaturated acid modified nano composite polyester resin material are:

[0028]

[0029] Wherein: the unsaturated acid is oleic acid; the nano oxide is nano silica; the initiator is cyclohexanone peroxide; and the polymerization inhibitor is hydroquinone.

[0030] The specific steps of a method for preparing an unsaturated acid modified nano composite polyester resin material are as follows:

[0031] (1) Preparation of unsaturated acid grafted nano oxide

[0032] According to the ratio of nano oxide mass (g): toluene volume (ml): unsaturated acid volume (ml) of 1:50:0.095, first add unsaturated acid to toluene, and then add nano oxide. The nano-oxide was modified for 4h under stirring conditions at 90°C. Then the mixture after the modification reaction is naturally cooled to room temperature, and then transferred to a centrifuge for centrifugal separation, and the centrifugal clear liquid and the centrifugal sediment ...

Example Embodiment

[0038] Example 2

[0039] The components and mass percentages of an unsaturated acid modified nano composite polyester resin material are:

[0040]

[0041] Wherein: the unsaturated acid is linoleic acid; the nano oxide is nano zinc oxide; the initiator is methyl ethyl ketone peroxide; and the polymerization inhibitor is methyl hydroquinone.

[0042] A preparation method of unsaturated acid modified nano composite polyester resin material is the same as that in Example 1, wherein:

[0043] In step (1), the ratio of nano oxide mass (g): toluene volume (ml): unsaturated acid volume (ml) is 1:46:0.17, the temperature during modification is 40°C, the reaction is carried out for 5 hours, and centrifuge The ratio of precipitation mass (g): absolute ethanol volume (ml) is 1:12, and the precipitation is washed three times after the first washing. According to the precipitation mass (g) after washing: the volume of absolute ethanol (ml) is 1:63, Soxhlet extraction is carried out for 10 hours,...

Example Embodiment

[0046] Example 3

[0047] The components and mass percentages of an unsaturated acid modified nano composite polyester resin material are:

[0048]

[0049]

[0050] Wherein: the unsaturated acid is linolenic acid; the nano oxide is nano titanium dioxide; the initiator is tert-butyl peroxybenzoate; and the polymerization inhibitor is p-hydroxyanisole.

[0051] A preparation method of unsaturated acid-modified nano composite polyester resin material is the same as in Example 1, wherein:

[0052] In step (1), the ratio of nano oxide mass (g): toluene volume (ml): unsaturated acid volume (ml) is 1:70:0.055, the temperature during modification is 110℃, the reaction is carried out for 6h, and the precipitation is centrifuged. The ratio of mass (g): volume (ml) of absolute ethanol is 1:25, and washing is repeated 4 times after the precipitation is washed for the first time. Soxhlet extraction was performed for 24 hours according to the precipitation mass (g) after washing: the volume of ab...

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Abstract

The invention relates to an unsaturated-acid modified unsaturated resin composite material and a preparation method thereof, particularly an unsaturated-acid modified nano composite polyester resin material and a preparation method thereof. The method comprises the following steps: carrying out organic modification on the surface of nano oxide to prepare unsaturated-acid grafted nano oxide; and sequentially adding styrene, the unsaturated-acid grafted nano oxide, an initiator and a polymerization inhibitor into an unsaturated polyester resin, and stirring uniformly to obtain the unsaturated-acid modified nano composite polyester resin material product. The product is composed of the unsaturated polyester resin, unsaturated acid, nano oxide, styrene, initiator and polymerization inhibitor. The method has the characteristics of short process, high safety and stability, and the like, is simple to operate, and can easily implement industrial production. The product has the characteristics of high mechanical properties, favorable heat resistance and the like. The method can be widely used for preparing the unsaturated polyester resin nano composite material.

Description

technical field [0001] The invention belongs to the technical field of resin composite materials, and in particular relates to an unsaturated acid-modified unsaturated polyester resin composite material and a preparation method thereof. Background technique [0002] Unsaturated polyester resin (UPR) is an important variety of synthetic resin because of its easy-to-obtain and low-cost raw materials. UPR has good mechanical properties, electrical properties and corrosion resistance, and is widely used in industry, agriculture, construction and national defense. UPR has excellent process performance, has suitable viscosity at room temperature, and can be cured and formed under normal temperature and pressure. However, its cured product has disadvantages such as low strength, poor toughness, large shrinkage rate, and easy cracking, which limits its application range. . In order to meet the needs of different fields and expand the application range of unsaturated polyester resi...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F212/08C08K9/04C08K3/36C08K3/22
Inventor 杨东明刘静陈恒志程杰
Owner CHONGQING UNIV
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