CN110791068A - Foam board and preparation method thereof - Google Patents
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C—CHEMISTRY; METALLURGY
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- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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Abstract
The invention discloses a foam board which comprises the following components in parts by weight: 60-100 parts of polylactic acid, 30-50 parts of polyethylene, 6-17 parts of polyethylene glycol ether, 2-8 parts of polyester polyol, 5-16 parts of polyester resin, 6-18 parts of starch, 1-5 parts of foam stabilizer, 2-6 parts of seaweed extract, 1-4 parts of silicone oil, 3-5 parts of high bauxite, 8-15 parts of ethylene-vinyl acetate, 0.5-3 parts of expanded graphite, 3-7 parts of bamboo fiber, 1-4 parts of magnesium carbonate and 0.2-0.5 part of stabilizer; the preparation method comprises the following steps of mixing, ultrasonic processing, pre-foaming, extruding and the like. The foam board has the advantages of low degradation rate and long service life, and the generated degradation products almost do no harm to human bodies and the environment, and have better structural strength and fireproof performance.
Description
Technical Field
The invention relates to a foam board and a preparation method thereof, and belongs to the technical field of foam boards.
Background
The foam board is a white object which is formed by heating expandable polystyrene beads containing volatile liquid foaming agent in a mould after heating and pre-foaming, has the structural characteristic of fine closed pores, and is mainly used for building wall bodies, roof insulation, composite board insulation, insulation of cold storage, air conditioners, vehicles and ships, floor heating, decoration carving and the like.
With the development of society and the improvement of living standard of people, the demand of degradable foam boards is larger. At present, the existing foam board has weak degradability, and the generated degradation products cause harm to human bodies and environment, and meanwhile, the fireproof effect is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the foam board and the preparation method thereof, the foam board has the advantages of low degradation rate and long service life, and the generated degradation products almost do not harm human bodies and the environment, and have better structural strength and fireproof performance.
In order to achieve the purpose, the invention adopts the following technical scheme: the foam board comprises the following components in parts by weight: 60-100 parts of polylactic acid, 30-50 parts of polyethylene, 6-17 parts of polyethylene glycol ether, 2-8 parts of polyester polyol, 5-16 parts of polyester resin, 6-18 parts of starch, 1-5 parts of foam stabilizer, 2-6 parts of seaweed extract, 1-4 parts of silicone oil, 3-5 parts of high bauxite, 8-15 parts of ethylene-vinyl acetate, 0.5-3 parts of expanded graphite, 3-7 parts of bamboo fiber, 1-4 parts of magnesium carbonate and 0.2-0.5 part of stabilizer.
Preferably, the foam board comprises the following components in parts by weight: 70-95 parts of polylactic acid, 35-45 parts of polyethylene, 10-14 parts of polyglycol ether, 3-5 parts of polyester polyol, 7-12 parts of polyester resin, 7-10 parts of starch, 1-3 parts of foam stabilizer, 3-4 parts of seaweed extract, 1.5-4 parts of silicone oil, 3.2-4 parts of high bauxite, 10-12 parts of ethylene-vinyl acetate, 0.6-1.2 parts of expanded graphite, 4-5 parts of bamboo fiber, 2-2.5 parts of magnesium carbonate and 0.3-0.35 part of stabilizer.
The invention also provides a preparation method of the foam board, which comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and carrying out ultrasonic treatment to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, and obtaining a mixture E after the pre-foaming is finished;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Preferably, the ultrasonic frequency in the step (3) is 800-1000 Hz, and the ultrasonic time is 20-30 min.
Preferably, the temperature of the pre-foaming machine in the step (5) is 85-95 min, the time of the pre-foaming machine is 100-120 s, and the vapor pressure in the pre-foaming machine is 0.03-0.06 MP.
Preferably, the curing treatment time in the step (6) is 7-9 h.
Preferably, the heating temperature in the step (7) is 145-175 ℃, and the heating time is 25-40 min.
The invention has the beneficial effects that: the preparation method is simple in preparation process, high in foaming efficiency, uniform in foaming and capable of enhancing the sound insulation and heat preservation effects of the foam board; the starch is added, the aim of degrading the foam board can be effectively fulfilled, and the degradation product does not contain substances harmful to human bodies and the environment, so that the foam board is environment-friendly, the degradation rate is low, and the service life of the foam board is prolonged; silicone oil is added to improve the structural strength and the surface smoothness of the foam board; the fireproof and flame-retardant performance of the foam board is improved by adding ethylene-vinyl acetate, bamboo fiber, high-alumina, magnesium carbonate and expanded graphite, and meanwhile, the structural strength of the foam board is increased; .
Detailed Description
The invention is illustrated by the following specific examples, which are not intended to be limiting.
Example 1
The foam board comprises the following components in parts by weight: 60 parts of polylactic acid, 30 parts of polyethylene, 6 parts of polyethylene glycol ether, 2 parts of polyester polyol, 5 parts of polyester resin, 6 parts of starch, 1 part of foam stabilizer, 2 parts of seaweed extract, 1 part of silicone oil, 3 parts of high bauxite, 8 parts of ethylene-vinyl acetate, 0.5 part of expanded graphite, 3 parts of bamboo fiber, 1 part of magnesium carbonate and 0.2 part of stabilizer.
The preparation method comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and carrying out ultrasonic treatment at an ultrasonic frequency of 800Hz for 20min to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, wherein the temperature of the pre-foaming machine is 85min, the time of the pre-foaming machine is 100s, the vapor pressure in the pre-foaming machine is 0.03-0.06 MP, and after the pre-foaming is finished, obtaining a mixture E;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃ for 7h, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating, wherein the heating temperature is 145 ℃, the heating time is 25min, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Example 2
The foam board comprises the following components in parts by weight: 90 parts of polylactic acid, 35 parts of polyethylene, 10 parts of polyethylene glycol ether, 3 parts of polyester polyol, 7 parts of polyester resin, 7 parts of starch, 1 part of foam homogenizing agent, 3 parts of seaweed extract, 1.5 parts of silicone oil, 3.2 parts of high bauxite, 10 parts of ethylene-vinyl acetate, 0.6 part of expanded graphite, 4 parts of bamboo fiber, 2 parts of magnesium carbonate and 0.3 part of stabilizer.
The preparation method comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and carrying out ultrasonic treatment with ultrasonic frequency of 850Hz and ultrasonic time of 25min to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, wherein the temperature of the pre-foaming machine is 85min, the time of the pre-foaming machine is 105s, the vapor pressure in the pre-foaming machine is 0.03-0.06 MP, and after the pre-foaming is finished, obtaining a mixture E;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃ for 8 hours, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating at 150 ℃ for 30min, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Example 3
The foam board comprises the following components in parts by weight: 82 parts of polylactic acid, 38 parts of polyethylene, 12 parts of polyethylene glycol ether, 4 parts of polyester polyol, 8 parts of polyester resin, 8 parts of starch, 2 parts of foam homogenizing agent, 3.5 parts of seaweed extract, 2 parts of silicone oil, 3.5 parts of high bauxite, 11 parts of ethylene-vinyl acetate, 0.7 part of expanded graphite, 4.3 parts of bamboo fiber, 2.2 parts of magnesium carbonate and 0.32 part of stabilizer
The preparation method comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and performing ultrasonic treatment at an ultrasonic frequency of 900Hz for 25min to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, wherein the temperature of the pre-foaming machine is 88min, the time of the pre-foaming machine is 110s, the vapor pressure in the pre-foaming machine is 0.03-0.06 MP, and after the pre-foaming is finished, obtaining a mixture E;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃ for 8 hours, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating at 155 ℃ for 30min, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Example 4
The foam board comprises the following components in parts by weight: 95 parts of polylactic acid, 45 parts of polyethylene, 14 parts of polyethylene glycol ether, 5 parts of polyester polyol, 12 parts of polyester resin, 10 parts of starch, 3 parts of foam homogenizing agent, 4 parts of seaweed extract, 4 parts of silicone oil, 4 parts of high-alumina, 12 parts of ethylene-vinyl acetate, 1.2 parts of expanded graphite, 5 parts of bamboo fiber, 2.5 parts of magnesium carbonate and 0.35 part of stabilizer.
The preparation method comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and performing ultrasonic treatment at an ultrasonic frequency of 950Hz for 25min to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, wherein the temperature of the pre-foaming machine is 92min, the time of the pre-foaming machine is 115s, the vapor pressure in the pre-foaming machine is 0.03-0.06 MP, and after the pre-foaming is finished, obtaining a mixture E;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃ for 8.5 hours, and foaming and molding the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating at 165 ℃ for 40min, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Example 5
The foam board comprises the following components in parts by weight: 100 parts of polylactic acid, 50 parts of polyethylene, 17 parts of polyethylene glycol ether, 8 parts of polyester polyol, 16 parts of polyester resin, 18 parts of starch, 5 parts of foam homogenizing agent, 6 parts of seaweed extract, 4 parts of silicone oil, 5 parts of high bauxite, 15 parts of ethylene-vinyl acetate, 3 parts of expanded graphite, 7 parts of bamboo fiber, 4 parts of magnesium carbonate and 0.5 part of stabilizer.
The preparation method comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and carrying out ultrasonic treatment at the ultrasonic frequency of 1000Hz for 30min to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, wherein the temperature of the pre-foaming machine is 95min, the time of the pre-foaming machine is 120s, the vapor pressure in the pre-foaming machine is 0.03-0.06 MP, and after the pre-foaming is finished, obtaining a mixture E;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃ for 9 hours, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating at 175 ℃ for 40min, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
Finally, it should be noted that the above embodiments are only used for illustrating and not limiting the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the present invention without departing from the spirit and scope of the present invention, and all modifications or partial substitutions should be covered by the scope of the claims of the present invention.
Claims (7)
1. The foam board is characterized by comprising the following components in parts by weight: 60-100 parts of polylactic acid, 30-50 parts of polyethylene, 6-17 parts of polyethylene glycol ether, 2-8 parts of polyester polyol, 5-16 parts of polyester resin, 6-18 parts of starch, 1-5 parts of foam stabilizer, 2-6 parts of seaweed extract, 1-4 parts of silicone oil, 3-5 parts of high bauxite, 8-15 parts of ethylene-vinyl acetate, 0.5-3 parts of expanded graphite, 3-7 parts of bamboo fiber, 1-4 parts of magnesium carbonate and 0.2-0.5 part of stabilizer.
2. The foam board according to claim 1, wherein the foam board comprises 70-95 parts of polylactic acid, 35-45 parts of polyethylene, 10-14 parts of polyglycol ether, 3-5 parts of polyester polyol, 7-12 parts of polyester resin, 7-10 parts of starch, 1-3 parts of foam homogenizing agent, 3-4 parts of seaweed extract, 1.5-4 parts of silicone oil, 3.2-4 parts of high-alumina, 10-12 parts of ethylene-vinyl acetate, 0.6-1.2 parts of expanded graphite, 4-5 parts of bamboo fiber, 2-2.5 parts of magnesium carbonate and 0.3-0.35 part of stabilizer.
3. A method for the preparation of a foam board according to claim 1, characterized in that it comprises the following steps:
(1) putting polylactic acid, polyethylene glycol ether, polyester polyol and polyester resin into a stirrer for mixing and stirring, wherein the stirring temperature is 105-115 ℃, the stirring speed is 350-450 rap, and the stirring time is 15-25 min to obtain a mixture A;
(2) mixing ethylene-vinyl acetate, bamboo fiber, high bauxite, magnesium carbonate and expanded graphite, and placing the mixture in a reaction kettle under the protection of nitrogen for heating and stirring, wherein the heating temperature is 100-125 ℃, the stirring speed is 200-250 rap, and the heating time is 10-20 min to obtain a mixture B;
(3) adding the mixture A obtained in the step (1) into the mixture B obtained in the step (2), mixing, placing in an ultrasonic device, adding a seaweed extract, silicone oil and a foam stabilizer, and carrying out ultrasonic treatment to obtain a mixture C;
(4) adding starch and a stabilizer into the mixture C obtained in the step (3) for mixing, wherein the mixing temperature is 55-65 ℃, the stirring speed is 120-200 rap, and the mixing time is 30-50 min to obtain a mixture D;
(5) adding the mixture D obtained in the step (4) into a pre-foaming machine for pre-foaming treatment, and obtaining a mixture E after the pre-foaming is finished;
(6) curing the mixture E treated in the step (4) in a curing environment at the temperature of 20-25 ℃, and carrying out foaming molding on the cured mixture E through an extruder to obtain a foam board;
(7) and (4) putting the foam board obtained in the step (6) into a high-temperature chamber for high-temperature heating, and cleaning and packaging the foam board subjected to high-temperature heating treatment to obtain a finished product.
4. The preparation method of the foam board according to claim 3, wherein the ultrasonic frequency in the step (3) is 800-1000 Hz, and the ultrasonic time is 20-30 min.
5. The method for preparing a foam board according to claim 3, wherein the temperature of the pre-foaming machine in the step (5) is 85-95 min, the time of the pre-foaming machine is 100-120 s, and the vapor pressure in the pre-foaming machine is 0.03-0.06 MP.
6. The method for preparing a foam board according to claim 3, wherein the curing time in the step (6) is 7-9 h.
7. The method for preparing a foam board according to claim 3, wherein the heating temperature in the step (7) is 145-175 ℃, and the heating time is 25-40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911084722.9A CN110791068A (en) | 2019-11-08 | 2019-11-08 | Foam board and preparation method thereof |
Applications Claiming Priority (1)
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| WO2023205259A1 (en) * | 2022-04-19 | 2023-10-26 | Lifoam Industries, Llc | Polylactic acid-based bead foam articles having ultra-highly planar particles |
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