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Low-volatization unsaturated polyester resin suitable for large glass steel structural layer and manufacturing method thereof

A polyester resin and unsaturated technology, which is used in the production method of resin and the field of low-volatile unsaturated polyester resin for glass fiber reinforced plastics, can solve the problems of health hazards, exothermic peak height and environmental pollution of construction workers, and achieve excellent mechanical properties. , good water resistance, high mechanical strength

Inactive Publication Date: 2009-12-30
CHANGZHOU HUARUN COMPOSITE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of high exothermic peak and poor toughness, the traditional FRP resin is only suitable for making small FRP products; on the other hand, the volatile toxic styrene in the resin will cause great harm to the health of construction workers. Ethylene is emitted into the air, which can also cause serious environmental pollution

Method used

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  • Low-volatization unsaturated polyester resin suitable for large glass steel structural layer and manufacturing method thereof
  • Low-volatization unsaturated polyester resin suitable for large glass steel structural layer and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Low volatility unsaturated polyester resin suitable for large FRP structure layer, which is prepared from the following raw materials: propylene glycol 119Kg, ethylene glycol 11Kg, adipic acid 4Kg, phthalic anhydride 140Kg, maleic anhydride 54Kg, styrene 150Kg, B20 Polyethylene glycol surfactant 0.02Kg, α-methylstyrene 20Kg, N20 fumed silica 0.55Kg.

[0027] The specific method is as follows:

[0028] ① Put 119Kg of propylene glycol, 11Kg of ethylene glycol, 4Kg of adipic acid, 140Kg of phthalic anhydride and 54Kg of maleic anhydride into a 350L reactor in sequence.

[0029] ② Nitrogen (flow rate is 0.5m 3 / h) for 10 minutes, make the reaction kettle in a state of nitrogen blanketing, start stirring and start to heat up, keep warm for 1 hour when the temperature rises to 155-160°C, and immediately pass cooling water into the vertical condenser when the water comes out from the distillation head, and control The head temperature is 100-102°C. After the heat preservati...

Embodiment 2-6

[0035]The method described in Example 1 is used to obtain a low-volatility unsaturated polyester resin suitable for large-scale FRP structural layers, and the specific raw material ester ratio is shown in Table 1. The unsaturated polyester resin was made into a casting body and its various indexes were measured, as shown in Table 1.

[0036] The formula of table 1 embodiment 1-6 and casting body index

[0037] (raw material unit Kg)

[0038] implement

example 1

implement

Example 2

implement

Example 3

implement

Example 4

implement

Example 5

implement

Example 6

Propylene Glycol

119

120

119

119

112

128

Ethylene glycol

11

10

11

11

8

15

Adipic acid

4

5

3

4

3

6

Phthalic anhydride

140

138

140

140

130

150

Maleic anhydride

54

55

...

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PUM

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Abstract

The invention relates to a high molecular compound, in particular to a low-volatization unsaturated polyester resin for manufacturing a large glass steel structural layer. The unsaturated polyester resin is prepared by dissolving a reaction product of a condensation reaction of propylene glycol, ethylene glycol, hexanedioic acid, phthalic anhydride and cis-butenedioic anhydride into styrene after the condensation reaction is completed. N20 type aerosol, M30 exothermic peak inhibitor and 0.02 portion of B20 surface active agent are added to the unsaturated polyester resin, and thixotropic index and viscidity required by provision can be achieved by high-speed and uniform dispersing through a stirring mill. The invention has the advantages of being suitable for hand pasting and injection molding process, having the characteristics of sagging resistance, high water resisting property, low exothermic peak and low volatilization of the styrene, being suitable for large thickness workpiece glass steel products of fan cover, glass steel boat, and the like, and having high intensity of the products, good weather resisting property and good water resisting property.

Description

1. Technical field [0001] The invention relates to an unsaturated polyester resin, in particular to a low-volatility unsaturated polyester resin for glass fiber reinforced plastics. In addition, the invention also relates to a method for preparing the resin. 2. Background technology [0002] FRP is a kind of composite material, which is made of resin as matrix and glass fiber as reinforcing material. times to 6 times. 2. Anti-corrosion and anti-aging, the service life can be as long as 50 years. 3. Easy to shape and strong designability. 4. Good insulation and heat resistance. [0003] With the continuous development and extension of the FRP industry, large FRP products such as FRP boats and wind turbine cabin covers have also developed vigorously in recent years. At the same time, the market and users have put forward higher requirements on the quality of unsaturated polyester resin for FRP. However, due to the shortcomings of high exothermic peak and poor toughness, t...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08G63/54C08K3/36C08K5/03
Inventor 包柏青曹建兴李秋萍刘世仓
Owner CHANGZHOU HUARUN COMPOSITE MATERIALS
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