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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

AI Technical Summary

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) nanomaterials are very easy to agglomerate, and it is difficult to effectively disperse in the raw material reaction system of unsaturated polyester resin, so it is difficult to play the function of nanomaterials
(2) The compatibility between nanomaterials and organic media is poor, and its surface atoms and oxygen bonds in polyester are not easy to combine, so it is difficult to improve the performance of the resin

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
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of unsaturated acid modified nano-composite polyester resin material and its mass percent 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 concrete steps of a kind of preparation method of unsaturated acid modified nano-composite polyester resin material are as follows:

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

[0032] According to the ratio of nano oxide mass (g): toluene volume (ml): the ratio of unsaturated acid volume (ml) is 1: 50: 0.095, the unsaturated acid is first added to the toluene, and then the nano oxide is added. The modification reaction was carried out on the nano-oxide for 4 hours under the condition of stirring at 90°C. Then the mixed solution after the modification reaction was naturally cooled to room temperature, then transferred to a centrifuge for centrifugati...

Embodiment 2

[0039] A kind of unsaturated acid modified nano-composite polyester resin material and its mass percent are:

[0040]

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

[0042] A kind of preparation method of unsaturated acid modified nanometer composite polyester resin material, with embodiment 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, centrifuged The ratio of precipitate mass (g): absolute ethanol volume (ml) is 1:12, and the precipitate is washed three times after the first wash. Soxhlet extraction was carried out for 10 hours according to the precipitate mass (g) after washing: the volume of absolute ethanol (ml) was 1:63, the baking temperature was 150°...

Embodiment 3

[0047] A kind of unsaturated acid modified nano-composite polyester resin material and its mass percent 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 kind of preparation method of unsaturated acid modified nanometer composite polyester resin material, with embodiment 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 ° C, the reaction is carried out for 6 hours, centrifuged and precipitated The ratio of mass (g): absolute ethanol volume (ml) is 1:25, and the precipitation is washed 4 times after the first wash. Soxhlet extraction was carried out for 24 hours according to the weight of the precipitate after washing (g): the volume of absolute ethanol (ml) was 1:89,...

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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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