CN105860204A - Novel halogen-free flame-retardant PE foam material and preparation method thereof - Google Patents

Novel halogen-free flame-retardant PE foam material and preparation method thereof Download PDF

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Publication number
CN105860204A
CN105860204A CN201610265844.8A CN201610265844A CN105860204A CN 105860204 A CN105860204 A CN 105860204A CN 201610265844 A CN201610265844 A CN 201610265844A CN 105860204 A CN105860204 A CN 105860204A
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retardant
halogen
free flame
expanded material
novel halogen
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陈渠鍫
丁华雄
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Three Starr (jiangsu) Environmental Protection Technology Co Ltd
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Three Starr (jiangsu) Environmental Protection Technology Co Ltd
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    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/5205—Salts of P-acids with N-bases
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/14—Applications used for foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

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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)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a novel halogen-free flame-retardant foam material and a preparation method thereof. The halogen-free flame-retardant PE foam material is prepared from the following raw materials calculated by weight: 70-75Phr of LDPE(Low-Density Polyethylene), 20-25Phr of halogen-free flame retardant agent, 1.5-3.0Phr of foaming agent, 0.7-0.8Phr of peroxide cross-linking agent, 1.0Phr of zinc oxide, 1.0Phr of stearic acid and 1.0-3.0Phr of pigment by a process flow of batch mixing, open milling, sheeting, sulfurization foaming, cooling shaping and machining. The novel halogen-free flame-retardant foam material has good flame retardation, is free of halogen family elements and heavy metals, is healthy and low-carbon, and satisfies dual requirements on safety and environment protection.

Description

A kind of novel halogen-free flame-retardant PE expanded material and preparation method thereof
Technical field
The present invention relates to a kind of novel halogen-free flame-retardant PE expanded material and preparation method thereof.
Background technology
PE expanded material is due to light weight, good springiness, and pliability is good, be widely used in footwear material, packaging material, Toy for children, household goods, construction material etc..And these materials the most in use run into fire Probability is higher, and traditional PE expanded material is again the high-risk article of fire, and fire-retardant to material of society Performance requirement is more and more higher, and the PE expanded material therefore with flame retardant efficiency is the most concerned.
Preparing fire-retardant PE expanded material on the market generally uses antimony oxide and TDE conduct now Fire retardant, thus the PE expanded material being prepared from can contain heavy metal and halogen bromine, on the one hand harm Health, the most not environmentally.
Therefore, a kind of novel heavy metal and the good PE of halogen, Environmental Safety and fire resistance are not contained The research of expanded material is worth inquiring into.
Summary of the invention
Goal of the invention: in order to overcome flame retardant type PE expanded material present in prior art mostly to contain halogen family unit Element and the problem of the harmful substance such as heavy metal, the present invention proposes and a kind of can not only meet fire resistance, and not Novel halogen-free flame-retardant PE expanded material containing hazardous substance heavy metal and the environmental protection and safety type of halogen and Preparation method.
Technical scheme: in order to solve above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of novel Halogen-free flameproof PE expanded material, including following raw material by weight: LDPE 70-75Phr, Halogen hinders Combustion agent 20-25Phr, foaming agent 1.5-3.0Phr, peroxide cross-linking agent 0.7-0.8Phr, zinc oxide 1.0Phr, stearic acid 1.0Phr, pigment 1.0-3.0Phr；Described LDPE is Low Density Polyethylene, institute Stating foaming agent is high-temperature foaming agent azodicarbonamide AC.
Being more highly preferred to, described halogen-free flame retardants is for using phosphorus-nitrogen containing flame retardant.
Further, the described phosphorus-nitrogen containing flame retardant tripolycyanamide polyphosphoric acid including 20%-40% calculated by mass Double Ji Wusi of salt, the melamine pyrophosphate of 20%-30%, the silicon dioxide of 10%-20% and 10%-20% Alcohol.
Further, described peroxide cross-linking agent is cumyl peroxide DCP.
Present invention also offers the preparation method of above-mentioned novel halogen-free flame-retardant PE expanded material, comprise the following steps:
(1) batch mixing: get ready on-demand for needed raw material, is placed in banbury and carries out mixing treatment, wherein compress sky Material is discharged when atmospheric pressure is 0.7-0.9MPa, material temperature is 105-115 DEG C；
(2) mill: the material discharged by banbury is sent into mill and carried out mill, and front roll temperature is 90-100 DEG C, rear roll temperature is 80-90 DEG C, and roll spacing is 0.3-0.7mm, mends refining 3-5 time；
(3) slice: the material after mill is sent into film-discharging machine and is processed, cools down after obtaining tablet, cooling Water temperature≤35 DEG C；
(4) sulfur foam: the tablet after slice is sent into vulcanizing press and carries out sulfur foam process, steam Pressure is 0.8-0.85MPa, cure time=mold thickness × 1.5min/mm；
(5) cooling molding, processing: cool time >=48 hour, obtains novel halogen-free flameproof PE after molding Expanded material.
Being more highly preferred to, in described step (1), the charging sequence of mixing procedure is first by LDPE, halogen-free flameproof Agent and stearic acid add mixer mixing once, add foaming agent, peroxide crosslinking after Fructus Anisi Stellati is united by the time again Agent, zinc oxide and pigment, after the mixing uniformly of all materials, discharging.
Being more highly preferred to, during the batch mixing in described step (1), temperature is not higher than 120 DEG C.
Being more highly preferred to, in described step (4), mould specification is 1800mm × 680mm × 24mm, during sulfuration Between be 36min.
Beneficial effect: a kind of novel halogen-free flame-retardant expanded material that the present invention provides and preparation method thereof, will be as follows Raw material by weight: LDPE 70-75Phr, halogen-free flame retardants 20-25Phr, foaming agent 1.5-3.0Phr, Peroxide cross-linking agent 0.7-0.8Phr, zinc oxide 1.0Phr, stearic acid 1.0Phr, pigment 1.0-3.0 Phr；It is prepared as nothing by batch mixing, mill, slice, sulfur foam, cooling molding, the technological process of processing Halogen fire-retardant PE expanded material, not only fire resistance is good, and does not contains halogen and heavy metal, healthy low-carbon, Meet the double requirements to safety and environmental protection.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1:
A kind of novel halogen-free flame-retardant PE expanded material, including following raw material by weight: LDPE 70Phr, Halogen-free flame retardants 20Phr, foaming agent 1.5Phr, peroxide cross-linking agent 0.7Phr, zinc oxide 1.0Phr, Stearic acid 1.0Phr, pigment 1.0-3.0Phr.
Wherein, LDPE is main material, selects Low Density Polyethylene, Low Density Polyethylene foam material pliability Good, flexible, low cost.
Foaming agent is high-temperature foaming agent azodicarbonamide AC, for regulating hardness and the density of expanded material.
Halogen-free flame retardants be use phosphorus-nitrogen containing flame retardant, calculated by mass include 30% tripolycyanamide polyphosphoric acid Salt, the melamine pyrophosphate of 30%, the silicon dioxide of 20% and the Bis(pentaerythritol) of 20%, do not contain halogen Race's element.
Peroxide cross-linking agent is cumyl peroxide DCP, for regulating the crosslink density of material, peroxidating The amount of hydrogen cross-linking agent must well control, and during sulfur foam, crosslink density is low the most at least causes melt strength Low bag does not lives gas and forms continuous aperture structure and maybe cannot foam；Cross at most that crosslink density is too during sulfur foam Height causes melt strength the highest and expansion ratio is little maybe cannot foam.
Zinc oxide is used as to help blowing promotor, regulates its expansion rate, and content is too low, and foaming agent gas forming amount is little to be caused Foaming agent consumption increases, expansion rate SC slow curing foamed time energy consumption to be extended increases；Zinc oxide is too much, then send out Bubble causes rate of closed hole to decline soon, and product resilience is poor.
Stearic acid is used as to help foaming and lubricant, regulation expansion rate and antiseized effect in operating process, sends out very little Steep the most slack-off, material slightly sticky equipment in operation, the most then foam and slightly accelerate, skidding time mixing, it is slow to heat up, and opens Refining process easy roll release on a mill until.
Various pigment, as coloring agent, give the various deep mixed color of product.
Embodiment 2:
Except each raw material dosage is different, other are specific as follows with embodiment 1:
A kind of novel halogen-free flame-retardant PE expanded material, including following raw material by weight: LDPE 75Phr, Halogen-free flame retardants 25Phr, foaming agent 3.0Phr, peroxide cross-linking agent 0.8Phr, zinc oxide 1.0Phr, Stearic acid 1.0Phr, pigment 1.0-3.0Phr.
Wherein halogen-free flame retardants be use phosphorus-nitrogen containing flame retardant, calculated by mass include 40% the poly-phosphorus of tripolycyanamide Hydrochlorate, the melamine pyrophosphate of 20%, the silicon dioxide of 20% and the Bis(pentaerythritol) of 20%, do not contain Halogen.
Embodiment 3:
Except each raw material dosage is different, other are specific as follows with embodiment 1:
A kind of novel halogen-free flame-retardant PE expanded material, including following raw material by weight: LDPE 73Phr, Halogen-free flame retardants 23Phr, foaming agent 2.0Phr, peroxide cross-linking agent 0.75Phr, zinc oxide 1.0Phr, Stearic acid 1.0Phr, pigment 1.0-3.0Phr.
Halogen-free flame retardants be use phosphorus-nitrogen containing flame retardant, calculated by mass include 40% tripolycyanamide polyphosphoric acid Salt, the melamine pyrophosphate of 30%, the silicon dioxide of 15% and the Bis(pentaerythritol) of 15%, do not contain halogen Race's element.
Embodiment 4:
By the preparation method of the novel halogen-free flame-retardant PE expanded material that the formula of embodiment 2 is prepared, including Following steps:
(1) batch mixing: get ready on-demand for needed raw material, is placed in banbury and carries out mixing treatment, wherein compress sky Material is discharged when atmospheric pressure is 0.7MPa, material temperature is 105 DEG C；Charging sequence is first by LDPE, halogen-free flameproof Agent and stearic acid add mixer mixing once, add foaming agent, peroxide crosslinking after Fructus Anisi Stellati is united by the time again Agent, zinc oxide and pigment, after the mixing uniformly of all materials, discharging；During batch mixing, temperature is not higher than 120℃；
(2) mill: the material discharged by banbury is sent into mill and carried out mill, and front roll temperature is 90 DEG C, Rear roll temperature is 80 DEG C, and roll spacing is 0.3mm, mends refining 3 times；
(3) slice: the material after mill is sent into film-discharging machine and is processed, cools down after obtaining tablet, cooling Water temperature≤35 DEG C；
(4) sulfur foam: the tablet after slice is sent into vulcanizing press and carries out sulfur foam process, steam Pressure is 0.8MPa, and mould specification is 1800mm × 680mm × 24mm, cure time=mold thickness × 1.5 min/mm；It is specially 36min；
(5) cooling molding, processing: cool time >=48 hour, after molding, cutting, stamping-out obtain novel nothing Halogen fire-retardant PE expanded material；
(6) detection: this fire-retardant PE expanded material oxygen index (OI) is 25 after testing, and without halogen and weight Metal, qualified dispatches from the factory.
Embodiment 5-6:
Remaining step is with embodiment 2, and the technological parameter of various preparation methoies is different, is specifically shown in Table 1:
Table 1: embodiment 5-6 each process parameter
Take PE expanded material prepared by embodiment of the present invention 4-6 and commercially available fire-retardant PE expanded material carry out right Than detection test, the PE expanded material good flame retardation effect (oxygen index (OI) that after testing prepared by embodiment of the present invention 4-6 It is 25), and do not contain halogen and heavy metal.And the most fire-retardant PE expanded material uses three oxygen Change two antimony and TDE, contain halogen and heavy-metal residual after testing.
It should be pointed out that, that above detailed description of the invention is merely to illustrate the present invention rather than limits the model of the present invention Enclosing, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen by those skilled in the art In the application claims limited range.

Claims (8)

1. a novel halogen-free flame-retardant PE expanded material, it is characterised in that include following raw material by weight Component: LDPE 70-75Phr, halogen-free flame retardants 20-25Phr, foaming agent 1.5-3.0Phr, peroxidating Thing cross-linking agent 0.7-0.8Phr, zinc oxide 1.0Phr, stearic acid 1.0Phr, pigment 1.0-3.0Phr； Described LDPE is Low Density Polyethylene, and described foaming agent is high-temperature foaming agent azodicarbonamide AC.
Novel halogen-free flame-retardant PE expanded material the most according to claim 1, it is characterised in that: described nothing Halogen fire retardant is phosphorus-nitrogen containing flame retardant.
Novel halogen-free flame-retardant PE expanded material the most according to claim 2, it is characterised in that: described phosphorus The nitrogenated flame retardant tripolycyanamide including the melamine polyphosphate of 20%-40%, 20%-30% calculated by mass Pyrophosphate, the silicon dioxide of 10%-20% and the Bis(pentaerythritol) of 10%-20%.
Novel halogen-free flame-retardant PE expanded material the most according to claim 1, it is characterised in that: described mistake Oxide cross linking agent is cumyl peroxide DCP.
5. the preparation method of novel halogen-free flame-retardant PE expanded material as claimed in claim 1, it is characterised in that Comprise the following steps:
(1) batch mixing: get ready on-demand for needed raw material, is placed in banbury and carries out mixing treatment, wherein compress sky Material is discharged when atmospheric pressure is 0.7-0.9MPa, material temperature is 105-115 DEG C；
(2) mill: the material discharged by banbury is sent into mill and carried out mill, and front roll temperature is 90-100 DEG C, rear roll temperature is 80-90 DEG C, and roll spacing is 0.3-0.7mm, mends refining 3-5 time；
(3) slice: the material after mill is sent into film-discharging machine and is processed, cools down after obtaining tablet, cooling Water temperature≤35 DEG C；
(4) sulfur foam: the tablet after slice is sent into vulcanizing press and carries out sulfur foam process, steam Pressure is 0.8-0.85MPa, cure time=mold thickness × 1.5min/mm；
(5) cooling molding, processing: cool time >=48 hour, obtains novel halogen-free flame-retardant PE and sends out after molding Foam material.
The preparation method of novel halogen-free flame-retardant PE expanded material the most according to claim 5, its feature exists In: in described step (1), the charging sequence of mixing procedure is for first to add LDPE, halogen-free flame retardants and stearic acid Enter mixer mixing once, add again after Fructus Anisi Stellati is united by the time foaming agent, peroxide cross-linking agent, zinc oxide with And pigment, after the mixing uniformly of all materials, discharging.
The preparation method of novel halogen-free flame-retardant PE expanded material the most according to claim 5, its feature exists In: during the batch mixing in described step (1), temperature is not higher than 120 DEG C.
The preparation method of novel halogen-free flame-retardant PE expanded material the most according to claim 4, its feature exists In: in described step (4), mould specification is 1800mm × 680mm × 24mm, and cure time is 36min.
CN201610265844.8A 2016-04-26 2016-04-26 Novel halogen-free flame-retardant PE foam material and preparation method thereof Pending CN105860204A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111040283A (en) * 2019-12-30 2020-04-21 傲科塑料制品（张家港）有限公司 Flame-retardant environment-friendly foaming type toughness strip and processing method thereof
CN115572423A (en) * 2022-09-13 2023-01-06 惠州市国鹏科技有限公司 Flame-retardant foam heat-insulation material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481475A (en) * 2008-07-17 2009-07-15 黑龙江沃尔德电缆有限公司 Ultraviolet crosslinked expansion type flame-retardant polyolefin cable insulation sheath material and preparation thereof
CN101928420A (en) * 2009-06-24 2010-12-29 上海金发科技发展有限公司 Halogen-free flame-retardant expanded polyethylene composition and preparation method thereof
CN102174223A (en) * 2011-03-15 2011-09-07 常州大学 Flame-retardant foamed polyethylene material and preparation method thereof
CN103724776A (en) * 2014-01-03 2014-04-16 齐齐哈尔大学 Environment-friendly foaming children game puzzle ground mat containing negative ions and preparation of mat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481475A (en) * 2008-07-17 2009-07-15 黑龙江沃尔德电缆有限公司 Ultraviolet crosslinked expansion type flame-retardant polyolefin cable insulation sheath material and preparation thereof
CN101928420A (en) * 2009-06-24 2010-12-29 上海金发科技发展有限公司 Halogen-free flame-retardant expanded polyethylene composition and preparation method thereof
CN102174223A (en) * 2011-03-15 2011-09-07 常州大学 Flame-retardant foamed polyethylene material and preparation method thereof
CN103724776A (en) * 2014-01-03 2014-04-16 齐齐哈尔大学 Environment-friendly foaming children game puzzle ground mat containing negative ions and preparation of mat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111040283A (en) * 2019-12-30 2020-04-21 傲科塑料制品（张家港）有限公司 Flame-retardant environment-friendly foaming type toughness strip and processing method thereof
CN115572423A (en) * 2022-09-13 2023-01-06 惠州市国鹏科技有限公司 Flame-retardant foam heat-insulation material and preparation method thereof

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Application publication date: 20160817