阅读说明：本技术 一种糖树脂保温材料及其制备和回收再利用 (Sugar resin thermal insulation material and preparation and recycling thereof ) 是由 贺庄明 于 2019-11-20 设计创作，主要内容包括：本发明提出一种糖树脂保温材料及其制备和回收再利用。所述糖树脂保温材料包括以下质量份的成分：糖树脂80～100份、交联剂0～8份、稳泡剂2～3份、催化剂1～2份、阻燃剂10～50份、液体阻燃剂10～20份、扩链剂0～3份、发泡剂0～6份、固化剂4～15份、水0～3份。本发明提出的糖树脂保温材料,以糖树脂为主要原料；糖树脂是一种无甲醛、可降解、可再生的碳水化合物,是热固型树脂；本发明生产的泡沫制品性能稳定,具有低VOC、生态环保的特点。(The invention provides a sugar resin heat-insulating material and preparation and recycling thereof. The sugar resin heat-insulating material comprises the following components in parts by mass: 80-100 parts of sugar resin, 0-8 parts of cross-linking agent, 2-3 parts of foam stabilizer, 1-2 parts of catalyst, 10-50 parts of flame retardant, 10-20 parts of liquid flame retardant, 0-3 parts of chain extender, 0-6 parts of foaming agent, 4-15 parts of curing agent and 0-3 parts of water. The sugar resin heat-insulating material provided by the invention takes sugar resin as a main raw material; the sugar resin is a formaldehyde-free, degradable and renewable carbohydrate and is a thermosetting resin; the foam product produced by the invention has stable performance, low VOC and ecological environmental protection.)

1. The sugar resin thermal insulation material is characterized by comprising the following components in parts by mass:

80-100 parts of sugar resin, 0-8 parts of cross-linking agent, 2-3 parts of foam stabilizer, 1-2 parts of catalyst, 10-50 parts of flame retardant, 10-20 parts of liquid flame retardant, 0-3 parts of chain extender, 0-6 parts of foaming agent, 4-15 parts of curing agent and 0-3 parts of water.

2. The sugar resin thermal insulation material as claimed in claim 1, wherein the sugar resin is synthesized from glucose, the hydroxyl value of the sugar resin is 250-280, the molecular weight is 1800-2500, and the acid value is less than or equal to 3.0.

3. The sugar resin thermal insulation material according to claim 1, wherein the cross-linking agent is ethylenediamine polyether tetrol or polypropylene glycol glycidyl ether with the molecular weight of 300-400, and the foam stabilizer is silicone oil; the catalyst is potassium oleate.

4. The sugar resin thermal insulation material according to claim 1, wherein the flame retardant comprises 0-35 parts of a solid flame retardant and 10-20 parts of a liquid flame retardant, the solid flame retardant is one or more of a solid phosphate flame retardant, decabromodiphenylethane, antimony trioxide, melamine cyanurate and melamine polyphosphate, and the liquid flame retardant is one or more of tris (2-chloroethyl) phosphate, trichloropropylphosphate and an organophosphorus flame retardant DMMP.

5. The sugar resin thermal insulation material according to claim 1, wherein the chain extender is an alcohol chain extender, and is one or two selected from 1, 4-butanediol, 1, 6-hexanediol, glycerol, trimethylolpropane, diethylene glycol, triethylene glycol, neopentyl glycol, sorbitol, and diethylaminoethanol.

6. The sugar resin thermal insulation material according to claim 1, wherein the foaming agent is one of n-pentane, n-hexane and n-heptane; and/or

The curing agent is ammonium sulfate.

7. The sugar resin thermal insulation material according to any one of claims 1 to 6, characterized in that the sugar resin thermal insulation material comprises the following components in parts by mass:

85 parts of sugar resin, 6-8 parts of cross-linking agent, 2-3 parts of foam stabilizer, 1-2 parts of catalyst, 14-16 parts of liquid flame retardant, 2-3 parts of chain extender, 4-6 parts of foaming agent and 12-15 parts of curing agent.

8. The preparation method of the sugar resin thermal insulation material as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:

1) adding 80-100 parts of sugar resin and 0-8 parts of cross-linking agent into a reaction vessel, heating to 55-65 ℃, adding 2-3 parts of foam stabilizer and 1-2 parts of catalyst into the reaction vessel simultaneously, stirring for 10-20 minutes,

2) adding 10-50 parts of a flame retardant, 10-20 parts of a liquid flame retardant, 0-3 parts of a chain extender, 0-6 parts of a foaming agent and 0-3 parts of water into a reaction container, stirring for 8-15 minutes, and cooling to 20-25 ℃ to obtain a sugar resin composite material;

3) and respectively metering and inputting the sugar resin composite material and the curing agent to a production line, foaming, curing and shaping.

9. The method for recycling the sugar resin thermal insulation material according to any one of claims 1 to 7, wherein the sugar resin thermal insulation material is recycled, crushed, added with ethylene glycol in a stirring kettle, heated to 65 to 85 ℃, and stirred for 1 to 3 hours to obtain a liquid composition;

the obtained liquid composition is adjusted in concentration by sugar resin, and then curing agent is added to prepare the sugar resin heat-insulating material.

10. The method for recycling the sugar resin thermal insulation material according to claim 9, wherein 60-80 kg of the recycled sugar resin thermal insulation material is added to every 100 kg of ethylene glycol;

and adding sugar resin according to the weight of 20-30% of the obtained liquid composition to adjust the concentration.

Technical Field

The invention belongs to the field of building materials, and particularly relates to a high-efficiency heat-insulating material, and preparation and application thereof.

Background

Insulation generally refers to materials having a thermal conductivity of less than or equal to 0.12. As a main functional material for saving energy and reducing consumption, the heat insulation material is widely applied to the fields of building exterior walls, vehicle decoration, refrigeration facilities, ship interior trim and the like. The heat insulation material comprises an inorganic heat insulation material and an organic synthetic heat insulation material, mainly comprises glass wool, rock wool, expanded perlite, foamed cement and the like in a non-polar manner, and has the defects of difficult molding, complex processing and the like when being used for the interior decoration of industrial facilities or vehicles and ships; the organic synthetic materials comprise polystyrene boards, polyurethane boards, rubber and plastic boards and the like, can be shaped according to the shape of equipment through extrusion molding, are convenient to use and process, but have the defects of flammability, emission pollution and the like. In the market, the resins for synthesizing organic materials are mainly phenolic resin, melamine formaldehyde resin, urea resin and the like, the raw materials are high in price and contain toxic gases such as formaldehyde and the like, and the production conditions are not environment-friendly; toxic and harmful gases are also released when the application environment is at high temperature or exposed to open fire. Polyurethane is a nitrogen-containing polymer material, can release toxic and harmful gases when exposed to open fire, and needs to strictly control combustion conditions during incineration and recovery so as to absorb the toxic gases.

The heat-insulating material is divided into the following components according to the heat conductivity coefficient: a thermal insulation material (thermal conductivity lambda is less than 0.23W/m.k); thermal insulation material (thermal conductivity coefficient lambda is less than 0.14W/m.k); high-efficiency heat-insulating material (the heat conductivity coefficient lambda is less than or equal to 0.05W/m.k). The organic synthetic heat-insulating material mainly depends on a foam porous structure to realize the heat-insulating function, and the porous structure can cause the loss of the material strength. The preparation of the heat-insulating material which has high-efficiency heat-insulating function and good mechanical property is a technical problem which exists in the field.

The environment-friendly raw material components are adopted to synthesize the high-efficiency heat-insulating material, so that the market blank can be filled, and a better application effect can be obtained.

Disclosure of Invention

Aiming at the defects in the field, the invention aims to provide a sugar resin thermal insulation material.

The second purpose of the invention is to provide a preparation method of the sugar resin thermal insulation material.

The third purpose of the invention is to provide a recycling method of the sugar resin thermal insulation material.

The technical scheme for realizing the aim of the invention is as follows:

the sugar resin thermal insulation material comprises the following components in parts by mass:

80-100 parts of sugar resin, 0-8 parts of cross-linking agent, 2-3 parts of foam stabilizer, 1-2 parts of catalyst, 10-50 parts of flame retardant, 10-20 parts of liquid flame retardant, 0-3 parts of chain extender, 0-6 parts of foaming agent, 4-15 parts of curing agent and 0-3 parts of water.

The sugar resin is synthesized by taking glucose as a raw material, the hydroxyl value of the sugar resin is 250-280, the molecular weight is 1800-2500, and the acid value is less than or equal to 3.0.

Further, the cross-linking agent is ethylenediamine polyether tetrol or polypropylene glycol glycidyl ether with the molecular weight of 300-400, and the catalyst is potassium oleate. The foam stabilizer is silicone oil. The catalyst is potassium oleate.

The cross-linking agent makes the sugar resin and other assistants have better compatibility, and makes the mixing and subsequent steps easy to operate. Foam stabilizer silicone oils are preferably used as broad-spectrum foam stabilizers for foaming systems such as HCFC-141b, cyclopentane, water-full, etc., e.g., AK-8805 or AK-158 silicone oils.

The flame retardant is composed of 0-35 parts of a solid flame retardant and 10-20 parts of a liquid flame retardant, wherein the solid flame retardant is one or more of a solid phosphate flame retardant, decabromodiphenylethane (TDE), antimony trioxide, melamine cyanurate MCA and melamine polyphosphate (flame retardant MPP), and the liquid flame retardant is one or more of tris (2-chloroethyl) phosphate (TCEP), Trichloropropylphosphate (TCPP) and an organophosphorus flame retardant DMMP.

Wherein the chain extender is an alcohol chain extender and is one or two selected from 1, 4-Butanediol (BDO), 1, 6-hexanediol, glycerol, trimethylolpropane, diethylene glycol (DEG), triethylene glycol, neopentyl glycol (NPG), sorbitol and Diethylaminoethanol (DEAE).

The foaming agent of the thermal insulation foam material can be selected from alkane, trichlorofluoromethane (Freon 11 for short) or water foaming and the like. The invention selects halogen-free components, and compared with the product performance, the environment-friendly alkane used as the foaming agent is more preferable to the alkane used for foaming with water, and the environment is not damaged.

Preferably, the foaming agent is one of n-pentane, n-hexane and n-heptane; and/or

The curing agent is ammonium sulfate.

According to a preferable technical scheme, the sugar resin heat-insulating material comprises the following components in parts by mass:

85 parts of sugar resin, 6-8 parts of cross-linking agent, 2-3 parts of foam stabilizer, 1-2 parts of catalyst, 14-16 parts of liquid flame retardant, 2-3 parts of chain extender, 4-6 parts of foaming agent and 12-15 parts of curing agent.

The preparation method of the sugar resin heat-insulating material comprises the following steps:

1) adding 80-100 parts of sugar resin and 0-8 parts of cross-linking agent into a reaction vessel, heating to 55-65 ℃, adding 2-3 parts of foam stabilizer and 1-2 parts of catalyst into the reaction vessel simultaneously, stirring for 10-20 minutes,

2) adding 10-50 parts of a flame retardant, 10-20 parts of a liquid flame retardant, 0-3 parts of a chain extender, 0-6 parts of a foaming agent and 0-3 parts of water into a reaction container, stirring for 8-15 minutes, and cooling to 20-25 ℃ to obtain a sugar resin composite material;

3) and respectively metering and inputting the sugar resin composite material and the curing agent to a production line, foaming, curing and shaping.

In the preparation method, the reaction vessel can be a reaction tank, a reaction kettle and the like with stirring, which are conventional in the field; the production line is a conventional insulation production line in the field. The sugar resin composition and the curing agent are foamed, cured and shaped, and then are usually cut and packaged.

The method for recycling the sugar resin heat-insulating material comprises the steps of recycling the sugar resin heat-insulating material, crushing the recycled sugar resin heat-insulating material, adding ethylene glycol into a stirring kettle, heating to 65-85 ℃, and stirring for 1-3 hours.

The obtained liquid composition is adjusted in concentration by sugar resin, and then curing agent is added to prepare the sugar resin heat-insulating material.

Wherein, every 100 kg of ethylene glycol is added into 60-80 kg of the recovered sugar resin heat-insulating material;

and adding sugar resin according to the weight of 20-30% of the obtained liquid composition to adjust the concentration.

The invention has the beneficial effects that:

the sugar resin heat-insulating material provided by the invention takes sugar resin as a main raw material; the sugar resin is a formaldehyde-free, degradable and renewable carbohydrate and is a thermosetting resin; the foam product produced by the invention has stable performance, low VOC and ecological environmental protection.

The heat insulating material is a formaldehyde-free halogen-free recyclable foam heat insulating material, and can replace traditional toxic and expensive polyurethane resin, phenolic resin, urea resin, melamine formaldehyde resin and the like. The product produced by the sugar resin is non-toxic, tasteless, free of formaldehyde gas emission, low in price and renewable, and is a novel material for creating a fresh environment.

The sugar resin thermal insulation material provided by the invention is widely applied as a thermal insulation material. Can be applied to the heat preservation of building inner walls, automobile decoration, refrigerator and freezer, the heat preservation interlayer of a refrigeration house, boat decoration, the moisture preservation and heat insulation decoration of military products and the like.

Detailed Description

The following examples are intended to illustrate the invention but should not be construed as limiting the scope thereof. In the examples, all the means used are conventional in the art unless otherwise specified.