CN107746568A - A kind of circuit board Antibacterial polyurethane composite - Google Patents

A kind of circuit board Antibacterial polyurethane composite Download PDF

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Publication number
CN107746568A
CN107746568A CN201711091127.9A CN201711091127A CN107746568A CN 107746568 A CN107746568 A CN 107746568A CN 201711091127 A CN201711091127 A CN 201711091127A CN 107746568 A CN107746568 A CN 107746568A
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parts
circuit board
polyurethane composite
antibacterial polyurethane
weight
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李长峰
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ANHUI RUIFA COMPOSITES MANUFACTURING Co Ltd
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ANHUI RUIFA COMPOSITES MANUFACTURING Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/69—Polymers of conjugated dienes
    • C08G18/698—Mixtures with compounds of group C08G18/40
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
    • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
    • C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
    • C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention discloses a kind of circuit board Antibacterial polyurethane composite, its raw material includes by weight：20 50 parts of polyoxypropyleneglycol, 15 35 parts of end hydroxy butadiene, polyadipate 1,2 pairs of 20 48 parts of (methylol) carborane esters, 50 98 parts of IPDI, 4 20 parts of chain extender, 3 12 parts of modified filler, 29 parts of lignin, 0.5 3 parts of catalyst, 0.05 0.9 parts of antioxidant, 0.2 0.8 parts of antiseptic, 1.3 2.9 parts of γ r-chloropropyl trimethoxyl silanes, N, 0.4 2 parts of N dimethyl dodecylamines.Circuit board proposed by the present invention Antibacterial polyurethane composite, it has excellent antibiotic property, and heat-resist, and intensity is high, uses it for service life in circuit board and grows.

Description

A kind of circuit board Antibacterial polyurethane composite
Technical field
The present invention relates to circuit board material technical field, more particularly to a kind of circuit board Antibacterial polyurethane composite wood Material.
Background technology
Polyurethane not only possesses the high-tension, high-tensile strength, tough and ageing-resistant characteristic of brilliance, and is ripe environmental protection Material, the fields such as electronic apparatus, automobile, articles for daily use it have been widely used at present.But exist in polyether polyols big The ester bond and urea bond, the greasy dirt adsorbed during use, sweat stain etc. of amount can provide abundant nutrition for the growth of microorganism And the energy, polyurethane material, easily by microbial attack, accelerates the aging of polyurethane material during use, when it is used as The defects of antibiotic property is not good enough during circuit board material be present, decline the service life of circuit board.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of circuit board Antibacterial polyurethane composite wood Material, it has excellent antibiotic property, and heat-resist, and intensity is high, uses it for service life in circuit board and grows.
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change propylene glycol 20-50 parts, end hydroxy butadiene 15-35 parts, double (methylol) the carborane ester 20-48 of polyadipate -1,2- Part, IPDI 50-98 parts, chain extender 4-20 parts, modified filler 3-12 parts, lignin 2-9 parts, catalyst 0.5-3 parts, antioxidant 0.05-0.9 parts, antiseptic 0.2-0.8 parts, γ-r-chloropropyl trimethoxyl silane 1.3-2.9 parts, N, N- Dimethyl dodecylamine 0.4-2 parts.
Preferably, the chain extender is BDO, hexamethylene diamine, NPG, trihydroxy methyl third One or more kinds of mixtures in alkane.
Preferably, the modified filler is prepared according to following technique：By γ-(methacryloxy) propyl group front three TMOS and benzoyl peroxide are well mixed, and are added in PLA in the then input double screw extruder that stirs and are carried out Reactive extrursion, then add in chloroform, add in ethanol and precipitate after drying, filter, be dried to obtain intermediate；By intermediate Add in ethanol, be stirring evenly and then adding into oxalic acid, nano-calcium carbonate and nano silicon, the stirring reaction 3- at 55-65 DEG C 5h, reaction terminate after through filtering, washing, being dried to obtain the modified filler.
Preferably, in the preparation process of modified filler, the weight of γ-(methacryloxy) propyl trimethoxy silicane Measure the 1.5-2.5% of the weight for PLA.
Preferably, in the preparation process of modified filler, intermediate, nano-calcium carbonate, the weight ratio of nano silicon For 2-10：30-50：45-70.
Preferably, double screw extruder each section of temperature setting from head is respectively 155-160 DEG C, 165-170 DEG C, 160- 165℃、155-160℃、145-150℃。
Preferably, the catalyst is one kind in salicylic acid, 1,2- methylimidazoles, 2,2- dual-morpholinyl diethyl ethers Or a variety of mixture.
Preferably, the antioxidant is the mixture of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531, And the weight of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531 ratio is 1：6-10.
Preferably, the antiseptic is chitosan, sodium benzoate, the mixture of potassium sorbate, and chitosan, benzoic acid Sodium, the weight ratio of potassium sorbate are 2-10：1-5：3-9.
Circuit board of the present invention Antibacterial polyurethane composite, it is with polyoxypropyleneglycol, the poly- fourth of terminal hydroxy group Double (methylol) the carborane esters of diene, polyadipate -1,2- and IPDI are raw material, and keeping, polyurethane is low Assign composite excellent heat resistance and intensity while warm nature energy；In the preparation process of preferred embodiment modified filler, first Using γ-(methacryloxy) propyl trimethoxy silicane and PLA as raw material, by control reaction condition, make γ- (methacryloxy) propyl trimethoxy silicane and PLA have obtained intermediate, by intermediate there occurs graft reaction After being mixed with nano-calcium carbonate and nano silicon, intermediate is modified nano-calcium carbonate and nano silicon, The surface nature of nano-calcium carbonate and nano silicon is improved, has obtained modified filler, is added into system, in system In be uniformly dispersed, it is strong with the adhesion of matrix, significantly improve the tensile strength, bending strength and impact strength of composite； γ-r-chloropropyl trimethoxyl silane, N, N- dimethyl dodecylamines can form quaternary ammonium salt in system, after coordinating with antiseptic Performance cooperates with, and assigns composite excellent anti-microbial property.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change double 48 parts of (methylol) the carborane esters of 50 parts of propylene glycol, 15 parts of end hydroxy butadiene, polyadipate -1,2-, different Fo Er It is 50 parts of ketone diisocyanate, 20 parts of chain extender, 3 parts of modified filler, 9 parts of lignin, 0.5 part of catalyst, 0.9 part of antioxidant, anti- 0.2 part of microbial inoculum, 1.3 parts of γ-r-chloropropyl trimethoxyl silane, N, 2 parts of N- dimethyl dodecylamines.
Embodiment 2
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change double 20 parts of (methylol) the carborane esters of 20 parts of propylene glycol, 35 parts of end hydroxy butadiene, polyadipate -1,2-, different Fo Er 98 parts of ketone diisocyanate, 4 parts of chain extender, 12 parts of modified filler, 2 parts of lignin, 3 parts of catalyst, 0.05 part of antioxidant, antibacterial 0.8 part of agent, 2.9 parts of γ-r-chloropropyl trimethoxyl silane, N, 0.4 part of N- dimethyl dodecylamines.
Embodiment 3
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change double 47 parts of (methylol) the carborane esters of 47 parts of propylene glycol, 19 parts of end hydroxy butadiene, polyadipate -1,2-, different Fo Er 59 parts of ketone diisocyanate, 17 parts of 1,4- butanediols, 5 parts of modified filler, 8.2 parts of lignin, 0.3 part of DMIZ 1,2 dimethylimidazole, 0.7 part of 2,2- dual-morpholinyl diethyl ethers, 0.8 part of antioxidant, 0.4 part of antiseptic, 2.6 parts of γ-r-chloropropyl trimethoxyl silane, 1 part of N, N- dimethyl dodecylamine；
Wherein, the modified filler is prepared according to following technique：By γ-(methacryloxy) propyl group trimethoxy Base silane and benzoyl peroxide are well mixed, and are added in PLA in the then input double screw extruder that stirs and are carried out instead It should extrude, wherein, the weight of γ-(methacryloxy) propyl trimethoxy silicane is the 1.5% of the weight of PLA, so Add afterwards in chloroform, add in ethanol and precipitate after drying, filter, be dried to obtain intermediate；Intermediate is added in ethanol, Oxalic acid, nano-calcium carbonate and nano silicon are stirring evenly and then adding into, wherein, intermediate, nano-calcium carbonate, nanometer titanium dioxide The weight ratio of silicon is 10：30：70, the stirring reaction 5h at 55 DEG C, reaction terminate after through filtering, washing, being dried to obtain described change Property filler；
Wherein, double screw extruder each section of temperature setting from head be respectively 155 DEG C, 170 DEG C, 160 DEG C, 160 DEG C, 145℃；
The antioxidant is the mixture of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531, and hindered amine The weight of light stabilizer LS-622 and ultraviolet absorbent UV-531 ratio is 1：6；
The antiseptic is chitosan, sodium benzoate, the mixture of potassium sorbate, and chitosan, sodium benzoate, sorbic acid The weight ratio of potassium is 10：1：9.
Embodiment 4
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change double 21 parts of (methylol) the carborane esters of 23 parts of propylene glycol, 32 parts of end hydroxy butadiene, polyadipate -1,2-, different Fo Er 91 parts of ketone diisocyanate, 3 parts of hexamethylene diamine, 6 parts of NPG, 11 parts of modified filler, 3.8 parts of lignin, 2.6 parts of salicylic acid, 0.1 part of antioxidant, 0.7 part of antiseptic, 1.8 parts of γ-r-chloropropyl trimethoxyl silane, N, N- dimethyl 12 1.7 parts of alkylamine；
Wherein, the modified filler is prepared according to following technique：By γ-(methacryloxy) propyl group trimethoxy Base silane and benzoyl peroxide are well mixed, and are added in PLA in the then input double screw extruder that stirs and are carried out instead It should extrude, wherein, the weight of γ-(methacryloxy) propyl trimethoxy silicane is the 2.5% of the weight of PLA, so Add afterwards in chloroform, add in ethanol and precipitate after drying, filter, be dried to obtain intermediate；Intermediate is added in ethanol, Oxalic acid, nano-calcium carbonate and nano silicon are stirring evenly and then adding into, wherein, intermediate, nano-calcium carbonate, nanometer titanium dioxide The weight ratio of silicon is 2：50：45, the stirring reaction 3h at 65 DEG C, reaction terminate after through filtering, washing, being dried to obtain the modification Filler；
Wherein, double screw extruder each section of temperature setting from head be respectively 160 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, 150℃；
The antioxidant is the mixture of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531, and hindered amine The weight of light stabilizer LS-622 and ultraviolet absorbent UV-531 ratio is 1：10；
The antiseptic is chitosan, sodium benzoate, the mixture of potassium sorbate, and chitosan, sodium benzoate, sorbic acid The weight ratio of potassium is 2：5：3.
Embodiment 5
A kind of circuit board Antibacterial polyurethane composite proposed by the present invention, its raw material include by weight：Polyoxy Change double 45 parts of (methylol) the carborane esters of 38 parts of propylene glycol, 32 parts of end hydroxy butadiene, polyadipate -1,2-, different Fo Er It is 68 parts of ketone diisocyanate, 17 parts of chain extender, 10 parts of modified filler, 6 parts of lignin, 2.6 parts of catalyst, 0.7 part of antioxidant, anti- 0.5 part of microbial inoculum, 2.1 parts of γ-r-chloropropyl trimethoxyl silane, N, 1.3 parts of N- dimethyl dodecylamines；
Wherein, the chain extender is BDO, hexamethylene diamine, NPG, trimethylolpropane Mixture, and the weight ratio of BDO, hexamethylene diamine, NPG, trimethylolpropane be 3：5： 2：3；
The modified filler is prepared according to following technique：By γ-(methacryloxy) propyl trimethoxy silicon Alkane and benzoyl peroxide are well mixed, and are added in PLA to stir and then put into double screw extruder react and are squeezed Go out, wherein, the weight of γ-(methacryloxy) propyl trimethoxy silicane is the 2% of the weight of PLA, is then added In chloroform, add in ethanol and precipitate after drying, filter, be dried to obtain intermediate；Intermediate is added in ethanol, stirring is equal Oxalic acid, nano-calcium carbonate and nano silicon are added after even, wherein, intermediate, nano-calcium carbonate, the weight of nano silicon Amount is than being 7：38：63, the stirring reaction 4h at 60 DEG C, reaction terminate after through filtering, washing, being dried to obtain the modified filler；
Wherein, double screw extruder each section of temperature setting from head be respectively 158 DEG C, 167 DEG C, 163 DEG C, 158 DEG C, 147℃；
The catalyst is salicylic acid, 1,2- methylimidazoles, the mixture of 2,2- dual-morpholinyl diethyl ethers, and bigcatkin willow Acid, DMIZ 1,2 dimethylimidazole, the weight ratio of 2,2- dual-morpholinyl diethyl ethers are 3：5：2；
The antioxidant is the mixture of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531, and hindered amine The weight of light stabilizer LS-622 and ultraviolet absorbent UV-531 ratio is 1：7；
The antiseptic is chitosan, sodium benzoate, the mixture of potassium sorbate, and chitosan, sodium benzoate, sorbic acid The weight ratio of potassium is 6：3：7.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (9)

1. a kind of circuit board Antibacterial polyurethane composite, it is characterised in that its raw material includes by weight：Polyoxygenated third It is enediol 20-50 parts, end hydroxy butadiene 15-35 parts, double (methylol) carborane ester 20-48 parts of polyadipate -1,2-, different Isophorone diisocyanate 50-98 parts, chain extender 4-20 parts, modified filler 3-12 parts, lignin 2-9 parts, catalyst 0.5-3 Part, antioxidant 0.05-0.9 parts, antiseptic 0.2-0.8 parts, γ-r-chloropropyl trimethoxyl silane 1.3-2.9 parts, N, N- dimethyl Lauryl amine 0.4-2 parts.
2. circuit board Antibacterial polyurethane composite according to claim 1, it is characterised in that the chain extender is 1, One or more kinds of mixtures in 4- butanediols, hexamethylene diamine, NPG, trimethylolpropane.
3. circuit board according to claim 1 or claim 2 Antibacterial polyurethane composite, it is characterised in that the modification is filled out Material is prepared according to following technique：γ-(methacryloxy) propyl trimethoxy silicane and benzoyl peroxide are mixed Close uniformly, add in PLA in the then input double screw extruder that stirs and carry out reactive extrursion, then add three chloromethanes In alkane, add in ethanol and precipitate after drying, filter, be dried to obtain intermediate；Intermediate is added in ethanol, added after stirring Enter oxalic acid, nano-calcium carbonate and nano silicon, the stirring reaction 3-5h at 55-65 DEG C, react after terminating through filtering, washing Wash, be dried to obtain the modified filler.
4. circuit board Antibacterial polyurethane composite according to claim 3, it is characterised in that in the system of modified filler During standby, the weight of γ-(methacryloxy) propyl trimethoxy silicane is the 1.5-2.5% of the weight of PLA.
5. according to the circuit board Antibacterial polyurethane composite of claim 3 or 4, it is characterised in that in modified filler Preparation process in, intermediate, nano-calcium carbonate, the weight ratio of nano silicon are 2-10：30-50：45-70.
6. according to circuit board Antibacterial polyurethane composite any one of claim 3-5, it is characterised in that double spiral shells Bar extruder each section of temperature setting from head is respectively 155-160 DEG C, 165-170 DEG C, 160-165 DEG C, 155-160 DEG C, 145-150℃。
7. according to circuit board Antibacterial polyurethane composite any one of claim 1-6, it is characterised in that described Catalyst is one or more kinds of mixtures in salicylic acid, DMIZ 1,2 dimethylimidazole, 2,2- dual-morpholinyl diethyl ethers.
8. according to circuit board Antibacterial polyurethane composite any one of claim 1-7, it is characterised in that described Antioxidant is the mixture of hindered amine as light stabilizer LS-622 and ultraviolet absorbent UV-531, and hindered amine as light stabilizer LS- 622 with the weight ratio of ultraviolet absorbent UV-531 be 1：6-10.
9. according to circuit board Antibacterial polyurethane composite any one of claim 1-8, it is characterised in that described Antiseptic is chitosan, sodium benzoate, the mixture of potassium sorbate, and the weight ratio of chitosan, sodium benzoate, potassium sorbate is 2-10：1-5：3-9.
CN201711091127.9A 2017-11-08 2017-11-08 A kind of circuit board Antibacterial polyurethane composite Withdrawn CN107746568A (en)

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CN1546568A (en) * 2003-12-09 2004-11-17 太原理工大学 Polyaminoester /molecular sieve composite material and its preparation method
CN103059554A (en) * 2013-01-08 2013-04-24 东莞市吉鑫高分子科技有限公司 Preparation method of thermoplastic polyurethane elastomer
CN103571164A (en) * 2012-08-03 2014-02-12 上海载和实业投资有限公司 Polylactic acid/core-shell structure composite material and preparation method thereof
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