CN105237848B - For the high density polyethylene (HDPE) of buffering package and diatomite composite material and preparation method thereof - Google Patents

For the high density polyethylene (HDPE) of buffering package and diatomite composite material and preparation method thereof Download PDF

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Publication number
CN105237848B
CN105237848B CN201510634082.XA CN201510634082A CN105237848B CN 105237848 B CN105237848 B CN 105237848B CN 201510634082 A CN201510634082 A CN 201510634082A CN 105237848 B CN105237848 B CN 105237848B
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China
Prior art keywords
hdpe
density polyethylene
high density
diatomite
composite material
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Expired - Fee Related
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CN201510634082.XA
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CN105237848A (en
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卢富德
王炳涛
高德
张萍
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Ningbo Institute of Technology of ZJU
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Ningbo Institute of Technology of ZJU
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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • 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
    • C08K3/346—Clay
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

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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)
  • Dispersion Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)

Abstract

A kind of high density polyethylene (HDPE) for buffering package and diatomite composite material and preparation method thereof, it is characterised in that：The composite is prepared by the raw material of following weight percents：High density polyethylene (HDPE) 30% 40%, calcium carbonate 50% 60%, diatomite 3% 6%, plasticizer and coupling agent 2% 4%.The present invention passes through rational formula rate, give full play to synergy, both the content of calcium carbonate had been reduced, production cost is reduced, simultaneously as high density polyethylene (HDPE) enables the material prepared to overcome low temperature resistant shock-absorbing capacity poor with diatomaceous synergy, the shortcomings that more easy to aging, effectively improve ductility, there is higher impact strength, tensile strength, a tearing strength, it is light it is soft, wearability is good；In addition, composite of the present invention be prepared into amortizing packaging material have it is moistureproof it is not afraid of water, good toughness is not easily broken, also has good impact resistance, dustless pollution-free environmental protection can multiple recycling.

Description

High density polyethylene (HDPE) and diatomite composite material and its preparation for buffering package Method
Technical field
The present invention relates to technical field of polymer materials, and in particular to polyethylene and diatomite composite material, i.e., it is a kind of to use In the high density polyethylene (HDPE) of buffering package and diatomite composite material and preparation method thereof.
Background technology
Any commodity be unable to do without packaging, and the product by packaging can not turn into commodity.Packaging material is as commodity The important component of packaging occupies very important status in packaging industry.Plastic. buffer is packed due to its excellent commodity Defencive function, it is light it is inexpensive turn into packaging material in study hotspot.The huge polyethylene of application amount (abbreviation in packaging material PE it is) a kind of aggregated obtained thermoplastic resin of ethene, its is odorless, nontoxic, feel ceraceous, has excellent resistance to low temperature (minimum reachable -100~-70 DEG C of temperature in use) and chemical stability is good, is resistant to the erosion of most of soda acids (intolerant to oxidation The acid of property).But the material, there is also certain deficiency, more easy to aging such as low temperature buffer poor performance, post-production shaping is resistance to The shortcomings of hot poor, therefore traditional PE plastics can not also use as padded coaming.
Diatomite is a kind of green filler widely studied in recent years, usually dead by being referred to as the unicellular alga of diatom Die what later silicate remains were formed, be mainly made up of unbodied SiO2, it has some unique performances, such as：It is more Permeability, relatively low density, larger surface area, nontoxic, suspension neutral with respect to Incoercibility and chemical stability, pH value Energy is good, absorption property is strong.Using diatomite modified conventional plastic materials, assign its particular characteristic some existing document reports.Specially Sharp CN201410344081.7 utilizes diatomite modified expanded graphite, improves expanded graphite absorption disposal polarity oil pollution group The performance divided, realizes its effective removal to various pollutants in water body.Patent CN201510044217.7 is then using in situ poly- Close diatomite and polyether-ketone Material cladding, diatomaceous porous feature makes the polyether-ketone of in-situ polymerization enter diatomite duct In, reduce stress concentration, solve diatomite and disperse uneven problem in high melt, hence it is evident that improve the mechanical property of composite Energy.But diatomite porous structure is used, in-situ modified traditional PE plastics, preparation is suitable to buffering package and machine-shaping heat resistance There is not been reported for composite that can be good.
The content of the invention
The present invention is directed to the above-mentioned deficiency of prior art, has the characteristics that porous, heat resistance is good by using diatomite, Provide a kind of high density polyethylene (HDPE) and diatomite composite material for buffering package, the invention by coextrusion process in situ, Make polyethylene long-chain that physical/chemical interaction occur with diatomite hole, and both is fully merged by capillary effect, Heat resisting temperature is low, easy to aging, corrugation cohesive force is low in raising high density polyethylene (HDPE)/diatomite composite material buffering processing and forming etc. Shortcoming, a kind of new approaches are provided for amortizing packaging material design.
The quality proportioning that composite of the present invention uses for：High density polyethylene (HDPE) 30%-40%, calcium carbonate 50%-60%, Diatomite 3%-6%, plasticizer and coupling agent 2%-4%.
The plasticizer of the present invention can be phthalate, phosphoric acid ester (such as tricresyl phosphate, phosphoric acid triphen Ester, diphenyl octyl phosphate), polyesters (such as：Decanedioic acid series, adipic acid series, phthalic acid series etc.) in one kind, It is preferred that use dioctyl phthalate.
Coupling agent of the present invention is silane coupler, and it preferably can be A174 silane couplers to have.
The present invention provides a kind of preparation method of above-specified high density polyethylene and diatomite composite material, specific preparation process Including：
(1) diatomite is dried to moisture at 110-120 DEG C first and reaches 0.4%-0.8%；
(2) high density polyethylene (HDPE) is placed in high-speed mixer and adds the plasticizer and coupling agent of formula rate simultaneously, 2-10min is mixed under 300-600r/min rotating speeds, batch mixing A is made；
(3) calcium carbonate of the dried diatomite of step (1) and formula rate is mixed, mixed material B is made；
(4) batch mixing A is well mixed with mixed material B, the banburying in banbury, mixing temperature is 130-160 DEG C, time 5- 15min；Then begun to pratise in mill, temperature of beginning to pratise is 130-160 DEG C, time 5-15min；Finally in four-roll calender Rolled, rolling temperature is 130-150 DEG C, and sheet material is obtained after calendering.
The advantages of the present invention：
1. the present invention gives full play to synergy, while add high density polyethylene (HDPE) 30%- by rational formula rate 40%, calcium carbonate 50%-60%, diatomite 3%-6% three is matched, and has both been reduced the content of calcium carbonate, has been reduced life Cost is produced, simultaneously as high density polyethylene (HDPE) enables the material prepared to overcome low temperature resistant delay with diatomaceous synergy Punching performance is poor, it is more easy to aging the shortcomings that, effectively improve ductility, there is higher impact strength, tensile strength, tearing strength, matter It is light and soft, wearability is good；In addition, composite of the present invention is prepared into amortizing packaging material there is moistureproof not afraid of water, good toughness to be not easy Fracture, also have good impact resistance, dustless pollution-free environmental protection can multiple recycling.
2. adding the coupling agent and plasticizer of specific proportioning in inventive formulation, and first coupling agent is mixed in advance with HDPE Close, then coordinate again with other raw materials, can effectively improve high density polyethylene (HDPE) and calcium carbonate, diatomaceous decentralization so that Filler disperses more uniform, effectively improves the mechanical performance and interface performance of integral material；And the addition of plasticizer can increase The plasticity of big material, improves lustrous surface and outward appearance, improves toughness and impact strength, improves extensibility and elongation at break, changes Enter the bonding to various base-materials so that the performance of material is more stable.
3. the product of the present invention is first by high density polyethylene (HDPE) 30%-40%, calcium carbonate 50%-60%, diatomite 3%-6% three is matched, and prepares composite, can effectively overcome the cost of original technique expensive and bad mechanical property Deficiency, while the mechanical performance of product can also be effectively improved.And the preparation method of the present invention is easily operated, and substep mixes, and has Effect weakens the repulsive interaction between various compounds so that is more fully mixed uniformly, the properties of product of gained are stable；Adopt simultaneously Temperature or time are controlled with processes such as banburying, mills and rationally, ensures raw material particularly calcium carbonate being uniformly distributed in matrix； The invention makes polyethylene long-chain that physical/chemical interaction occur with diatomite hole, and pass through hair by coextrusion process in situ Tubule effect makes both fully merge, and improves heat resisting temperature in high density polyethylene (HDPE)/diatomite composite material buffering processing and forming Low, the easy to aging, shortcoming such as corrugation cohesive force is low, a kind of new approaches are provided for amortizing packaging material design.
Embodiment
The present invention is described in further detail below by embodiment, but the present invention is not limited solely to following examples.
Embodiment
(1) diatomite is dried to moisture at 110-115 DEG C first and reaches 0.6%；
(2) high density polyethylene (HDPE) is placed in high-speed mixer and adds the plasticizer and coupling agent of formula rate simultaneously, 6min is mixed under 450-500r/min rotating speeds, batch mixing A is made；
(3) calcium carbonate of the dried diatomite of step (1) and formula rate is mixed, mixed material B is made；
(4) batch mixing A is well mixed with mixed material B, the banburying in banbury, mixing temperature is 150-155 DEG C, the time is 12min；Then begun to pratise in mill, temperature of beginning to pratise is 150-155 DEG C, time 10min；Finally in four-roll calender (pressure Piece machine) in rolled, rolling temperature be 140-145 DEG C, obtain sheet material after calendering.
Specific raw material proportioning is as shown in table 1：
Table 1
Sample prepared by the above embodiment of the present invention 1-3, its mechanical performance are as shown in table 2：
The properties of sample of table 2 is retrieved
Raw material (parts by weight) Embodiment 1 Embodiment 2 Embodiment 3
Tensile strength MPa 39.1 16.2 13.5
Impact strength KJ/m2 45.3 66.2 56.8
Utilize shore hardness ° 69 78 76
It was found from above table, packaging material prepared by the present invention has hardness height, stretching slight strong, can be suitably used for requiring The advantages of high pack environment.

Claims (3)

  1. A kind of 1. high density polyethylene (HDPE) and diatomite composite material for buffering package, it is characterised in that：The composite by The raw material of following weight percents is prepared：High density polyethylene (HDPE) 30%-40%, calcium carbonate 50%-60%, diatomite 3%-6%, increase Mould agent and coupling agent 2%-4%；Described plasticizer is Phthalates, one kind in phosphoric acid ester, polyesters, described idol Connection agent is silane coupler；
    Specific preparation process includes：
    （1）Diatomite is dried to moisture at 110-120 DEG C first and reaches 0.4%-0.8%；
    （2）High density polyethylene (HDPE) is placed in high-speed mixer and adds the plasticizer and coupling agent of formula rate simultaneously, 2-10min is mixed under 300-600r/min rotating speeds, batch mixing A is made；
    （3）By step（1）The calcium carbonate mixing of dried diatomite and formula rate, is made mixed material B；
    （4）Batch mixing A is well mixed with mixed material B, the banburying in banbury, mixing temperature is 130-160 DEG C, time 5- 15min；Then the mill in mill, mixing temperature is 130-160 DEG C, time 5-15min；Finally in four-roll calender In rolled, rolling temperature be 130-150 DEG C, obtain sheet material after calendering.
  2. 2. the high density polyethylene (HDPE) and diatomite composite material according to claim 1 for buffering package, its feature exists In：Described plasticizer is dioctyl phthalate.
  3. 3. the high density polyethylene (HDPE) and diatomite composite material according to claim 1 for buffering package, its feature exists In：Described coupling agent is A174 silane couplers.
CN201510634082.XA 2015-09-30 2015-09-30 For the high density polyethylene (HDPE) of buffering package and diatomite composite material and preparation method thereof Expired - Fee Related CN105237848B (en)

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CN106976626B (en) * 2017-06-06 2018-09-21 郑州电力高等专科学校 A kind of combined intelligent ammeter turnover box
CN108859365A (en) * 2018-03-30 2018-11-23 句容市茂源织造厂 A kind of silico-calcium modeling corrugated composite paperboard and preparation method thereof

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CN1105636C (en) * 1998-03-25 2003-04-16 香港商龙盟环保纸(集团)有限公司 Mfg. method for environmental protective paper
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"硅钙塑片材制备方法及其拉伸强度分析";王冬杰等;《机械工程师》;20160731(第7期);第12-15页 *

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