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Preparation method of unsaturated polyester-based composite material for surfboard

A composite material and unsaturated technology, applied in the field of preparation of unsaturated polyester-based composite materials for surfboards, can solve the problems of aging resistance, poor creep resistance, low curing shrinkage, high impact resistance, etc. , to slow down the speed of light aging, reduce the creep depth and creep modulus, and enhance the creep resistance.

Inactive Publication Date: 2016-08-24
SUZHOU ZHENZHAN TECHCAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified unsaturated polyester composite material of the invention has lower curing shrinkage and higher impact resistance, and can be used in the fields of automobile industry, building materials, machinery, etc., but its aging resistance and creep resistance are not good. It is relatively limited when it is applied to outdoor products such as surfboards

Method used

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  • Preparation method of unsaturated polyester-based composite material for surfboard

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing an unsaturated polyester-based composite material for a surfboard, the steps of which are as follows:

[0025] (1) Vacuum-dry rutile nano-titanium dioxide at 70°C and disperse it in deionized water. After the dispersion is uniform, move it into a three-port reaction kettle, add a titanate coupling agent, and mix the rutile nano-titanium dioxide and titanate coupling agent. The weight ratio is 49:1, dispersed by ultrasonic oscillation for 40 minutes, transferred to a 60°C water bath and heated while magnetically stirred for 1 hour, washed with ethanol for 3 times after centrifugal precipitation, vacuum-dried after suction filtration to obtain modified nano-titanium dioxide for later use;

[0026] (2) Soak in 12% sodium hypochlorite solution for 3 hours after crushing the natural coral block, then clean it with deionized water, dry it at 110° C. and place it in a grinder for 10 hours. After taking it out, coral powder is obtained. 49:1 coral powder ...

Embodiment 2

[0030] A method for preparing an unsaturated polyester-based composite material for a surfboard, the steps of which are as follows:

[0031] (1) Vacuum-dry rutile nano-titanium dioxide at 70°C and disperse it in deionized water. After the dispersion is uniform, move it into a three-port reaction kettle, add a titanate coupling agent, and mix the rutile nano-titanium dioxide and titanate coupling agent. The weight ratio is 49:1, dispersed by ultrasonic oscillation for 40 minutes, transferred to a 60°C water bath and heated while magnetically stirred for 1 hour, washed with ethanol for 3 times after centrifugal precipitation, vacuum-dried after suction filtration to obtain modified nano-titanium dioxide for later use;

[0032] (2) Soak in 12% sodium hypochlorite solution for 3 hours after crushing the natural coral block, then clean it with deionized water, dry it at 110° C. and place it in a grinder for 10 hours. After taking it out, coral powder is obtained. 49:1 coral powder ...

Embodiment 3

[0036] A method for preparing an unsaturated polyester-based composite material for a surfboard, the steps of which are as follows:

[0037] (1) Vacuum-dry rutile nano-titanium dioxide at 70°C and disperse it in deionized water. After the dispersion is uniform, move it into a three-port reaction kettle, add a titanate coupling agent, and mix the rutile nano-titanium dioxide and titanate coupling agent. The weight ratio is 49:1, dispersed by ultrasonic oscillation for 40 minutes, transferred to a 60°C water bath and heated while magnetically stirred for 1 hour, washed with ethanol for 3 times after centrifugal precipitation, vacuum-dried after suction filtration to obtain modified nano-titanium dioxide for later use;

[0038] (2) Soak in 12% sodium hypochlorite solution for 3 hours after crushing the natural coral block, then clean it with deionized water, dry it at 110° C. and place it in a grinder for 10 hours. After taking it out, coral powder is obtained. 49:1 coral powder ...

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Abstract

The invention provides a preparing method of unsaturated polyester composite materials for a surfboard. The method comprises steps that 1. nanometer titanium dioxide is subjected to vacuum drying and then is distributed in deionized water, titanate coupling agents are added, ultrasonic oscillation dispersing is carried out, the materials are moved to water bath for heating, meanwhile, magnetic stirring is carried out, and modified nanometer titanium dioxide is obtained by suction filtration vacuum drying; 2. natural coral blocks are soaked in a sodium hypochlorite solution after being smashed, after drying, the materials are placed to a grinder, silane coupling agents are added into a supersonic cleaner, and modified coral powder is obtained by suction filtration vacuum drying; 3. unsaturated polyester, accelerants, antifoaming agents, antioxygen agents, the modified nanometer titanium dioxide and the modified coral powder are added into a stirring tank for stirring, and pre-mixed materials are obtained; and 4. curing agents and the pre-mixed materials are poured into a die, the die is cured, and the unsaturated polyester composite materials for the surfboard are obtained. The prepared composite materials have good anti-aging performance and anti-creeping performance and can well meet the requirement of the surfboard.

Description

Technical field: [0001] The invention relates to an unsaturated polyester composite material, in particular to a preparation method of an unsaturated polyester-based composite material for surfboards. Background technique: [0002] Unsaturated polyester resin (UPR) belongs to thermosetting resin and is one of the most used composite matrix resins in modern composite material technology. Unsaturated resin has the advantages of high strength, light weight, corrosion resistance, fatigue resistance, simple process and low price, so it is widely used in construction, transportation, shipbuilding industry, aerospace tools and other industries. The high cross-linking degree of unsaturated resin makes it have good performance, but it also has disadvantages such as hard and brittle, poor impact resistance, aging resistance, and poor creep resistance, which seriously affects its application in outdoor products. , For example, when applied to surfboards, unsaturated polyester material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/06C08K9/04C08K9/06C08K3/22C08K3/26
Inventor 黄文成
Owner SUZHOU ZHENZHAN TECHCAL MATERIAL CO LTD