A kind of preparation method of waste edible oil-based unsaturated polyester resin

A technology of waste cooking oil and polyester resin, which is applied in the field of preparation of new unsaturated polyester resin from renewable waste cooking oil, which can solve the problems of limited reuse of waste cooking oil and limited production scale, and achieve dimensional stability of products Good, high temperature resistance, rich utilization methods

Inactive Publication Date: 2017-01-11
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic industrial utilization of waste cooking oil is mainly concentrated in the production of biodiesel, washing powder and biological mineral processing agent, but the production scale of these fields is limited, and the reuse of waste cooking oil is also limited

Method used

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  • A kind of preparation method of waste edible oil-based unsaturated polyester resin
  • A kind of preparation method of waste edible oil-based unsaturated polyester resin
  • A kind of preparation method of waste edible oil-based unsaturated polyester resin

Examples

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preparation example Construction

[0034] Preparation of B monoglycerides

[0035] The waste edible oil and glycerol with an acid value of less than 1mgKOH / g are put into the reactor at a ratio of 2.5:1 to 3:1, and N is fed into the reactor. 2 , in N 2 Under the protection, add 0.1-0.3% catalyst Ca(OH) of waste edible oil with a relative acid value of less than 1mg KOH / g and glycerol to the reaction kettle 2 , the temperature of the reactor was raised to 210-250°C, and the catalyst Ca(OH) 2 Under the action, alcoholysis reaction is carried out on waste edible oil whose acid value is less than 1mgKOH / g, and the reaction time is 3-5h, and then the temperature is lowered to below 15 DEG C to obtain monoglyceride, which is ready for use.

[0036] The waste edible oil with an acid value of less than 1mgKOH / g and glycerol are subjected to alcoholysis reaction to obtain monoglycerides, and the general reaction formula is as follows:

[0037]

[0038]The synthesis principle of this step is: the redistribution of ...

Embodiment 1

[0050] Embodiment 1, by above-mentioned preparation method:

[0051] A Pre-esterification treatment of waste edible oil

[0052] Put the preliminarily purified 70% waste edible oil and 30% glycerin into an autoclave, react at a high temperature of 200°C for 6 hours, and pre-esterify the preliminarily purified waste edible oil. The acid value of the waste edible oil was 0.8 mgKOH / g.

[0053] Preparation of B monoglycerides

[0054] The waste edible oil and glycerol with an acid value of 0.8mgKOH / g are put into the reactor at a ratio of 2.5:1, and N is fed into the reactor. 2 , in N 2 Under the protection, a catalyst Ca(OH) with a relative acid value of 0.8mgKOH / g and 0.1% of the total amount of waste edible oil and glycerol was added to the reactor. 2 , the reactor was heated to 210°C, and the catalyst Ca(OH) 2 Under the action, alcoholysis reaction is performed on waste edible oil with an acid value of 0.8 mgKOH / g, the reaction time is 3 h, and then the temperature is low...

Embodiment 2

[0059] Embodiment 2, by above-mentioned preparation method:

[0060] A Pre-esterification treatment of waste edible oil

[0061] Put the preliminarily purified 80% waste edible oil and 20% glycerin into the autoclave, react at a high temperature of 215 ° C for 8 hours, pre-esterify the preliminarily purified waste edible oil, and after the pre-esterification The acid value of the waste edible oil was 0.7 mgKOH / g.

[0062] Preparation of B monoglycerides

[0063] The waste edible oil and glycerol with an acid value of 0.7mgKOH / g are put into the reactor at a ratio of 2.7:1, and N is fed into the reactor. 2 , in N 2 Under the protection, 0.2% catalyst Ca(OH) with a relative acid value of 0.7mgKOH / g waste edible oil and glycerol was added to the reactor. 2 , the reaction kettle was heated to 230 ° C, and the catalyst Ca(OH) 2 Under the action, alcoholysis reaction is carried out on waste edible oil with an acid value of 0.7 mgKOH / g, the reaction time is 4 h, and then the tem...

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Abstract

The invention relates to a method for preparing novel unsaturated polyester resin from waste cooking oil. According to the preparation method, characteristics of waste cooking oil are fully utilized. Waste cooking oil which undergoes preliminary purification and glycerin are mixed in a high pressure reactor to carry out pre-esterification treatment so as to reduce acid value of waste cooking oil; the waste cooking oil which has undergone pre-esterification treatment reacts with glycerol to carry out an alcoholysis reaction so as to generate monoglyceride; monoglyceride reacts with maleic anhydride to generate monoglyceride maleic acid half ester; and finally monoglyceride maleic acid half ester is mixed with styrene to obtain the novel unsaturated polyester resin. The synthesized resin has advantages of unique structure, high rigidity, high hardness, high temperature resistance, nonflammability and good dimensional stability of a product. before curing, the resin is a viscous liquid with low molecular weight; and during molding process, the resin can flow, has plasticity, can be made into a certain shape and simultaneously undergoes a chemical reaction to be cross-linked and cured. The resin is suitable for various composite material molding technologies such as mould pressing, lamination, transfer molding, casting and the like.

Description

technical field [0001] The invention relates to the technical field of macromolecular polymers, in particular to a preparation method for preparing a novel unsaturated polyester resin from renewable waste edible oil. Background technique [0002] In recent years, synthetic resin has become the synthetic material with the highest output and greatest demand, among which unsaturated polyester resin is the largest amount of resin. Unsaturated polyester resin is mainly to improve the resin formula, to find new synthetic raw materials and new preparation methods, to produce resins with new structures and functions, and to broaden its application fields. However, due to the increasing depletion of petroleum resources and the rise of crude oil prices, the cost of resins is relatively high, and because petroleum-based polymer materials are generally difficult to degrade, they have caused huge pollution to the environment. The preparation of green polymer materials from alternative r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/01C08G63/52C08G63/78
Inventor 刘晓洪曾登葛翔
Owner WUHAN TEXTILE UNIV
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