CN109851946A - A kind of fire-retardant ageing-resistant plastic housing - Google Patents
A kind of fire-retardant ageing-resistant plastic housing Download PDFInfo
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- CN109851946A CN109851946A CN201811636916.0A CN201811636916A CN109851946A CN 109851946 A CN109851946 A CN 109851946A CN 201811636916 A CN201811636916 A CN 201811636916A CN 109851946 A CN109851946 A CN 109851946A
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Abstract
The present invention relates to plastic housing technical fields, more particularly to a kind of fire-retardant ageing-resistant plastic housing, raw material includes PVC, plasticizer, heat stabilizer, fire retardant, toughener, antioxidant and lubricant, and toughener mainly passes through castor oil, 2,4- toluene-2,4-diisocyanate and nano silica and is made.Fire retardant is added in the present invention in PVC, heat stabilizer and antioxidant, make PVC composite material that there is preferable anti-flammability and resistance to ag(e)ing, and in order to improve the impact resistance of PVC, the present invention carries out nano silica to coat obtained toughener using Castor Oil PU, cladding processing improves dispersibility of the nano silica in PVC, therefore toughening effect is preferable, Castor Oil PU also has preferable elasticity simultaneously, therefore toughener of the invention cooperates with the toughness of Reinforced PVC by two kinds of completely different mechanism of elastic body toughening and rigid toughening, make PVC that there is excellent shock resistance, meet the performance requirement of plug body.
Description
Technical field
The present invention relates to plastic housing technical fields, and in particular to a kind of fire-retardant ageing-resistant plastic housing.
Background technique
Plug is the critical component of power supply line connection forceful electric power, so the superiority and inferiority of its performance directly affects safe handling, wherein
Power-line plug is easy fever in the large-power occasions course of work, or generates spark phenomenon when carrying instantaneous pressure, this
The origin that a little heats or spark are all likely to become fire causes to burn, it is necessary to draw attention.
Polyvinyl chloride (PVC) because its physical mechanical property is good, electrical insulating property is superior, Shooting Technique is simple and also price just
Preferably, the various power-line plugs of injection molding are widely used in, the PVC material for plug material is mainly by polyvinyl chloride resin, plasticizer, heat
The composition such as stabilizer, fire retardant, anti-impact modifier.
But the shock resistance of PVC is poor, and anti-flammability and resistance to ag(e)ing are also lacking.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide a kind of fire-retardant ageing-resistant
Plastic housing.
The purpose of the invention is achieved by the following technical solution:
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: castor oil and glycerol is taken to carry out alcoholysis reaction, reaction temperature 200-220 under the catalysis of catalyst
DEG C, reaction time 1.5-2.5h obtains alcoholysis castor oil, and the weight ratio of the castor oil, glycerol and catalyst is 500:80-
The ratio of 120:1-3 forms；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 5-7:1-2:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
50-70 DEG C, the reaction time be 2-3h to get arrive polyurethane prepolymer solution, the weight of alcoholysis castor oil and isocyanate solution
Than for 1:2-4；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Fire retardant, heat stabilizer and antioxidant is added in the present invention in PVC, and PVC composite material is made to meet plug needs
Anti-flammability and resistance to ag(e)ing, and in order to improve the impact resistance of PVC, present invention adds special toughener.In the prior art,
Anti-impact modifier suitable for PVC is generally CPE, ACR, MBS etc., and these types of anti-impact modifier respectively has superiority and inferiority, but at present
This few money anti-impact modifier depends on import, higher cost, and lower-cost rigid toughening particle needs play compared with
If good toughening effect, the requirement to dispersibility is very high.The present invention carries out nano silica using Castor Oil PU
It coats and toughener is made, cladding processing improves dispersibility of the nano silica in PVC, therefore toughening effect is preferable, simultaneously
Castor Oil PU also has preferable elasticity, therefore toughener of the invention passes through two kinds of elastic body toughening and rigid toughening
The toughness of completely different mechanism collaboration Reinforced PVC, makes PVC have excellent shock resistance, meets the performance of plug body
Demand.
Wherein, the catalyst is triethanolamine.Triethanolamine can promote the alcohol of castor oil as response type catalyst
Efficiency is solved, the molecular structure of castor oil is changed, improves polyurethane toughness obtained.
Wherein, the partial size of the nano silica is 100-200nm, and the partial size of the toughener is 26.3-41.5 μm.
The present invention coats nano silica using polyurethane, thus can use the silica of nanometer diameter, solves to receive
The problem easy to reunite of rice silica, while in order to avoid itself reunion of silica in spray process, therefore partial size is preferred
For 100-200nm, and by the partial size of control nano silica after, the partial size of toughener is also under control, obtained
Micron order toughener can have preferable dispersibility in PVC, play significant toughening effect.
Wherein, the plasticizer is at least one in trioctyl trimellitate (TOTM), dioctyl adipate and dioctyl sebacate
Kind.The effect of plasticizer is to improve the processing fluidity of PVC, disperse conducive to the mixing of each material.
Wherein, the plasticizer is by trioctyl trimellitate (TOTM), dioctyl adipate and dioctyl sebacate by weight 1-
The ratio of 2:1-2:1 forms.It is significantly, to be conducive to toughening for the processability promotion of PVC that the present invention, which compounds the plasticizer selected,
Each auxiliary agent such as agent, heat stabilizer being uniformly distributed in PVC, because local ageing is less likely to occur plastic housing, stability is higher.
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight 1-3:1-2:0.4-0.6
Ratio composition.The present invention compounds the fire retardant selected when not influencing the mechanical property of plastic housing as far as possible, can make plastic housing
Anti-flammability reach V0 rank, and improve the thermal stability of plastic housing.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the lubricant is at least one of talcum powder, calcium stearate and polyethylene wax.Lubricant can be improved
Melt fluidity and release property reduce difficulty of processing conducive to each auxiliary agent such as toughener, heat stabilizer being uniformly distributed in PVC.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
The beneficial effects of the present invention are: fire retardant, heat stabilizer and antioxidant is added in the present invention in PVC, makes PVC
Composite material meets the anti-flammability and resistance to ag(e)ing of plug needs, and in order to improve the impact resistance of PVC, the present invention uses castor-oil plant
Oily polyurethane carries out nano silica to coat obtained toughener, and cladding processing improves point of the nano silica in PVC
Property is dissipated, therefore toughening effect is preferable, while Castor Oil PU also has preferable elasticity, therefore toughener of the invention passes through
The toughness of two kinds of completely different mechanism collaboration Reinforced PVCs of elastic body toughening and rigid toughening, makes PVC have excellent anti-impact
Performance is hit, the performance requirement of plug body is met.
Specific embodiment
For the ease of the understanding of those skilled in the art, below with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not is limitation of the invention.
Embodiment 1
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 210 DEG C, instead
It is 2h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio group of 500:100:2
At；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 6:1.5:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
60 DEG C, the reaction time is 2.5h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is
1:3；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Wherein, the catalyst is triethanolamine.
Wherein, the partial size of the nano silica is 150nm, and the partial size of the toughener is 34.1 μm.
Wherein, the plasticizer by trioctyl trimellitate (TOTM), dioctyl adipate and dioctyl sebacate by weight
1.5:1.5:1 ratio composition.
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight the ratio of 2:1.5:0.5
Composition.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, ratio of the lubricant by talcum powder, calcium stearate and polyethylene wax by weight 1:1:2 forms.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
Embodiment 2
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 200 DEG C, instead
It is 1.5h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio group of 500:80:1
At；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 5:1:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
50 DEG C, the reaction time is 2h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is 1:
2；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Wherein, the catalyst is triethanolamine.
Wherein, the partial size of the nano silica is 100nm, and the partial size of the toughener is 26.3 μm.
Wherein, the plasticizer is by trioctyl trimellitate (TOTM), dioctyl adipate and dioctyl sebacate by weight 1:
The ratio of 1:1 forms.
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight the ratio group of 1:1:0.4
At.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the lubricant is talcum powder.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
Embodiment 3
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 220 DEG C, instead
It is 2.5h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio of 500:120:3
Composition；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 7:2:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
70 DEG C, the reaction time is 3h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is 1:
4；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Wherein, the catalyst is triethanolamine.
Wherein, the partial size of the nano silica is 200nm, and the partial size of the toughener is 41.5 μm.
Wherein, the plasticizer is by trioctyl trimellitate (TOTM), dioctyl adipate and dioctyl sebacate by weight 2:
The ratio of 2:1 forms.
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight the ratio group of 3:2:0.6
At.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the lubricant is polyethylene wax.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
Embodiment 4
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 205 DEG C, instead
It is 1.8h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio of 500:90:1.5
Composition；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 6:1:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
55 DEG C, the reaction time is 2.2h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is
1:2.5；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Wherein, the catalyst is triethanolamine.
Wherein, the partial size of the nano silica is 120nm, and the partial size of the toughener is 30.4 μm.
Wherein, the plasticizer is trioctyl trimellitate (TOTM).
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight the ratio group of 1:2:0.5
At.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the lubricant is calcium stearate.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
Embodiment 5
A kind of fire-retardant ageing-resistant plastic housing, the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 215 DEG C, instead
It is 2.2h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio of 500:110:2
Composition；
(2) modified: take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, be added nano silica into
Row is stirred, and obtains isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and N, N- dimethyl second
The weight ratio of amide is 6:2:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
65 DEG C, the reaction time is 2.8h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is
1:3；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
Wherein, the catalyst is triethanolamine.
Wherein, the partial size of the nano silica is 170nm, and the partial size of the toughener is 16.7 μm.
Wherein, the plasticizer is dioctyl adipate.
Wherein, the heat stabilizer is Ca-Zn composite heat stabilizer.
Wherein, the fire retardant is by ammonium polyphosphate, triphenyl phosphate and aluminium hydroxide by weight the ratio group of 2:1:0.6
At.
Wherein, the antioxidant is made of irgasfos 168 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the lubricant is polyethylene wax.
The fire-retardant ageing-resistant plastic housing, is made by the following method: weighing each raw material in parts by weight and carries out dispersing to mix
Close, then carry out melting extrusion granulation, injection molding to get arrive the fire-retardant ageing-resistant plastic housing.
Comparative example 1
This comparative example the difference from embodiment 1 is that: the toughener is by ACR and CPE by weight the ratio group of 1:1
At.
Comparative example 2
This comparative example the difference from embodiment 1 is that: the toughener is made by the following method:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 200 DEG C, instead
It is 1.5h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is the ratio group of 500:80:1
At；
(2) modified: it takes 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, obtains isocyanate solution,
The weight ratio of 2, the 4- toluene-2,4-diisocyanate and n,N-dimethylacetamide is 5:10；
(3) polyurethane synthesizes: the alcoholysis castor oil being added and is reacted into isocyanate solution, reaction temperature is
50 DEG C, the reaction time is 2h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is 1:
2；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
The test of tensile strength, bending strength, impact strength and anti-flammability is carried out to embodiment 1-5 and comparative example 1-2,
Obtain following table:
By upper table data it is found that fire-retardant ageing-resistant plastic housing of the invention has excellent mechanical performance, and anti-flammability
It can reach V0 rank, meet high flame retardant demand；By the comparison of embodiment 1 and comparative example 1 it is found that toughening of the invention
Agent is relatively good on toughening effect, and the bending that can be obviously improved plastic housing is strong compared with conventional ACR and CPE
Degree and tensile strength；By the comparison of comparative example 1 and comparative example 2 it is found that polyurethane toughened dose strong for bending strength and stretching
The promotion of degree be more it will be evident that but be the absence of nano silica Rigid Particles Toughened effect after, in shock resistance
It is insufficient in promotion.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.
Claims (10)
1. a kind of fire-retardant ageing-resistant plastic housing, it is characterised in that: the raw material including following parts by weight:
Wherein, the preparation method of the toughener includes the following steps:
(1) alcoholysis: taking castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyst, and reaction temperature is 200-220 DEG C, instead
It is 1.5-2.5h between seasonable, obtains alcoholysis castor oil, the weight ratio of the castor oil, glycerol and catalyst is 500:80-120:
The ratio of 1-3 forms；
(2) modified: to take 2,4- toluene-2,4-diisocyanate to be dissolved in n,N-dimethylacetamide, nano silica is added and is stirred
Mixing is mixed, isocyanate solution, 2, the 4- toluene-2,4-diisocyanate, nano silica and n,N-dimethylacetamide are obtained
Weight ratio be 5-7:1-2:10；
(3) polyurethane synthesizes: the alcoholysis castor oil is added and is reacted into isocyanate solution, reaction temperature 50-
70 DEG C, the reaction time is 2-3h to get polyurethane prepolymer solution is arrived, and the weight ratio of alcoholysis castor oil and isocyanate solution is
1:2-4；
(4) spraying: the polyurethane prepolymer solution being subjected to electrostatic spray to get the toughener is arrived.
2. a kind of alcoholysis castor oil according to claim 1, it is characterised in that: the catalyst is triethanolamine.
3. a kind of alcoholysis castor oil according to claim 1, it is characterised in that: the partial size of the nano silica is
100-200nm, the partial size of the toughener are 26.3-41.5 μm.
4. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the plasticizer is trimellitic acid
At least one of three monooctyl esters, dioctyl adipate and dioctyl sebacate.
5. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the plasticizer is by trimellitic acid
Three monooctyl esters, dioctyl adipate and dioctyl sebacate are formed by weight the ratio of 1-2:1-2:1.
6. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the heat stabilizer is multiple for calcium zinc
Close heat stabilizer.
7. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the fire retardant is by polyphosphoric acid
Ammonium, triphenyl phosphate and aluminium hydroxide are formed by weight the ratio of 1-3:1-2:0.4-0.6.
8. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the antioxidant is by antioxidant
168 and antioxidant 1010 by weight 1:1 ratio form.
9. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: the lubricant be talcum powder,
At least one of calcium stearate and polyethylene wax.
10. the fire-retardant ageing-resistant plastic housing of one kind according to claim 1, it is characterised in that: be made: pressing by the following method
Parts by weight weigh each raw material and carry out dispersion mixing, then carry out melting extrusion granulation, and injection molding is to get to described fire-retardant
Ageing-resistant plastic housing.
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| CN110591158A (en) * | 2019-09-24 | 2019-12-20 | 浙江华峰新材料股份有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN111073174A (en) * | 2019-12-25 | 2020-04-28 | 广东祺龙科技有限公司 | Odorless antistatic PVC composite material and preparation method thereof |
| CN113105696A (en) * | 2021-05-25 | 2021-07-13 | 荔浦纬通新材料有限公司 | Preparation method of polypropylene composite engineering plastic |
| CN113337038A (en) * | 2021-06-01 | 2021-09-03 | 北京凌增新材料科技有限责任公司 | Preparation method of plastic with flame retardant property |
| CN114736471A (en) * | 2022-04-11 | 2022-07-12 | 界首市锦丰塑业有限公司 | Production process of toughened waste polyvinyl chloride |
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| CN110591158A (en) * | 2019-09-24 | 2019-12-20 | 浙江华峰新材料股份有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN110591158B (en) * | 2019-09-24 | 2021-10-08 | 浙江华峰新材料有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN111073174A (en) * | 2019-12-25 | 2020-04-28 | 广东祺龙科技有限公司 | Odorless antistatic PVC composite material and preparation method thereof |
| CN113105696A (en) * | 2021-05-25 | 2021-07-13 | 荔浦纬通新材料有限公司 | Preparation method of polypropylene composite engineering plastic |
| CN113337038A (en) * | 2021-06-01 | 2021-09-03 | 北京凌增新材料科技有限责任公司 | Preparation method of plastic with flame retardant property |
| CN114736471A (en) * | 2022-04-11 | 2022-07-12 | 界首市锦丰塑业有限公司 | Production process of toughened waste polyvinyl chloride |
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