[go: up one dir, main page]

CN1318459A - Pvc泡沫制品 - Google Patents

Pvc泡沫制品 Download PDF

Info

Publication number
CN1318459A
CN1318459A CN01108878A CN01108878A CN1318459A CN 1318459 A CN1318459 A CN 1318459A CN 01108878 A CN01108878 A CN 01108878A CN 01108878 A CN01108878 A CN 01108878A CN 1318459 A CN1318459 A CN 1318459A
Authority
CN
China
Prior art keywords
foam article
density
whipping agent
pvc
pvc foam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN01108878A
Other languages
English (en)
Inventor
S·齐拉费蒂
R·M·克鲁克
吴锦煌
M·Q·特兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema Inc
Original Assignee
Arkema Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arkema Inc filed Critical Arkema Inc
Publication of CN1318459A publication Critical patent/CN1318459A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/12—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 physical blowing agent
    • C08J9/14—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 physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
    • C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/03—Extrusion of the foamable blend
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明涉及用物理发泡剂吹胀的聚氯乙烯泡沫制品,所述发泡剂含有HFC气体。

Description

PVC泡沫制品
本发明涉及用物理发泡剂制得的聚氯乙烯(“PVC”)泡沫制品，更具体地说，涉及用一种或多种氢氟化碳(“HFC”)气体(如HFC-134a(1,1,1,2-四氟乙烷))吹胀的PVC泡沫制品。
已有一些文献(如S.K.Dey等人在1996年3月的Vinyl ＆ Additive Technology杂志Vol.2,No.1中的“Inert-Gas Extrusion of Rigid PVC Foam”)提到使用惰性气体发泡剂(如CO2)和化学发泡剂(如偶氮二酰胺)制备PVC泡沫制品。化学发泡剂存在诸如会在泡沫制品中残留以及加工适应性差等缺点，这是因为化学发泡剂是水敏性的，通常必须与PVC预混合。惰性发泡剂(如CO2)会限制改变泡沫制品密度的能力，通常会导致产生高密度泡沫制品。理想的是发泡剂具有较好的加工适应性和使密度达到一定范围的能力。
本发明提供了一种用物理发泡剂吹胀的PVC泡沫制品，所述发泡剂含有HFC气体。
现已发现使用HFC物理发泡剂可挤塑PVC泡沫制品，所述泡沫制品具有各种密度值，而且可避免留下残留物。低密度泡沫制品(密度低于0.2克/厘米3)可用作绝缘材料，而中密度的泡沫制品(密度约为0.5克/厘米3)可用作栅栏、型材、板材和管材。由于HFC气体发泡剂可独立于PVC加入挤出机中，因此，如下所示，可通过简单地调节发泡剂相对于挤出机中PVC的流速来控制密度。与氯化发泡剂不同，HFC气体还具有环保方面的优点，即具有零潜在臭氧损耗(zero ozone depletionpotential)(“ODP”)。
气体HFC发泡剂的实例有134a、152a(1,1-二氟乙烷)、32(二氟甲烷)、143a(1,1,1-三氟乙烷)、134(1,1,2,2-四氟乙烷)、245fa(1,1,1,3,3-五氟乙烷)、125(五氟乙烷)及其混合物。较好的发泡剂包括134a和152a。还可含有化学发泡剂(如偶氮二酰胺)、惰性气体(如二氧化碳和氮气)、水以及有机化合物，例如醚(如二甲醚)、醇和酮等作为发泡助剂，虽然这些发泡助剂的用量通常是很少的。
在实际操作中，所述物理发泡剂是注入含有熔融态PVC组合物的挤出机中的。可以使用普通的挤出机，如单螺杆挤出机或双螺杆挤出机。
典型的泡沫制品组合物含有PVC树脂；热稳定剂(如可从Elf Atochem购得的Thermolite有机锡稳定剂、可从Witco购得的Mark 1925锡稳定剂或者铅稳定剂，如三元硫酸铅、二元硬脂酸铅或二元磷酸铅)；抗冲改性剂(如可从Elf Atochem购得的Metablen C223或Metablen E900核-壳型抗冲改性剂，或非核-壳型改性剂，如氯化聚乙烯)；加工助剂(如高分子量和/或低分子量的丙烯酸聚合物)；润滑剂(如石蜡、聚乙烯蜡和/或硬脂酸钙)；填料(如碳酸钙或硅石)；以及颜料(如二氧化钛)。这些组成是现有技术中已知的。PVC树脂通常具有50至65左右的K值。“K值”是通用的分子量测定值。K值高于75通常认为是高的，而K值低于50通常认为是低的。
典型的加工温度为175-205℃。该温度通常在挤出机端部附近降低，但不低于约140℃。注入发泡剂所用的压力是可变的，取决于特定的挤出机的构型，与发泡剂的流速成正比。典型的注入压力约为100至1500psig。可以通过降低所述压力来提高泡沫制品的密度。
制备具有一定密度的PVC泡沫制品所需的发泡剂的量取决于多种因素，如发泡剂的分子量以及聚合物基体的堆积密度。例如，吹胀密度为2.0pcf(每立方英尺的磅数)的PVC泡沫制品所需的HFC-134a的量为树脂总重量的14％(重量)，而对于密度为20pcf的PVC泡沫制品需要约2％。使用加工助剂还能帮助降低泡沫制品的密度。
在挤出机的端部可以使用各种模头，以根据需要产生PVC管材、片材、型材、棒材等等。
在下面的非限制性实施例中对本发明作更详细的说明。使用普通的PVC泡沫制品组合物，其中以phr(“phr”表示每100份树脂中的重量份数)计含有：
组分                                      phr
Oxy225 PVC树脂，其K值为65,                100
可从Occidental Chemicals购得
Thermolite 137有机锡稳定剂，              2
可从Elf Atochem购得
硬脂酸钙润滑剂                             1.5
石蜡润滑剂                                  1
AC629A润滑剂，
购自Honeywell的一种氧化的聚乙烯均聚物      0.2
Durastrength 200核-壳抗冲改性剂
购自Elf Atochem                              6
丙烯酸聚合物加工助剂                        5.4
碳酸钙填料                                   4
二氧化钛颜料                                10
将原料以每小时17.5磅的速率加入在175至200℃的温度以75rpm(每分钟转数)运行的双螺杆挤出机中。通过在100至1500psig的范围内调节注入压力，以不同的速率将发泡剂(134a)加入熔融的PVC组合物中。测定挤出物的密度。结果表明将加入速率从0提高到0.05摩尔/分钟，可使密度从约1.4克/厘米3(在每分钟0摩尔时)降低至约0.4克/厘米3(在每分钟0.05摩尔时)。对于该特定装置构型，使用280-320psig的注入压力得到最低密度的泡沫制品。使用较低分子量的PVC树脂(K值约为60)及较高含量(7.4Phr)的加工助剂，可得到具有较低密度(约为0.3克/厘米3)的泡沫制品。

Claims (5)

1．用发泡剂吹胀的聚氯乙烯泡沫制品，所述发泡剂含有氢氟化碳气体。
2．如权利要求1所述的泡沫制品，其特征在于所述氢氟化碳选自134a、152a、143a、134、245fa、32、125及其混合物。
3．如权利要求1所述的泡沫制品，其特征在于所述氢氟化碳是134a。
4．如权利要求1所述的泡沫制品，其特征在于所述氢氟化碳是152a。
5．如权利要求1所述的泡沫制品，其特征在于所述发泡剂还含有化学发泡剂、惰性气体、水或有机化合物作为发泡助剂。
CN01108878A 2000-04-19 2001-02-27 Pvc泡沫制品 Pending CN1318459A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/552,054 2000-04-19
US09/552,054 US6225365B1 (en) 2000-04-19 2000-04-19 PVC foam

Publications (1)

Publication Number Publication Date
CN1318459A true CN1318459A (zh) 2001-10-24

Family

ID=24203751

Family Applications (1)

Application Number Title Priority Date Filing Date
CN01108878A Pending CN1318459A (zh) 2000-04-19 2001-02-27 Pvc泡沫制品

Country Status (9)

Country Link
US (1) US6225365B1 (zh)
EP (1) EP1148087B1 (zh)
JP (1) JP2001302836A (zh)
CN (1) CN1318459A (zh)
CA (1) CA2335263A1 (zh)
DE (1) DE60114694T2 (zh)
ES (1) ES2250309T3 (zh)
HK (1) HK1041236A1 (zh)
MX (1) MXPA01003927A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229476A (zh) * 2011-06-13 2011-11-02 祁守岗 一种发泡剂
CN106827371A (zh) * 2017-01-21 2017-06-13 温岭东方红车料有限公司 自行车坐垫及其套皮的加工方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW530140B (en) 2001-08-02 2003-05-01 Goodyear Tire & Rubber Flexible PVC helical hose
US6878752B1 (en) 2002-05-14 2005-04-12 Sandia Corporation Method for making one-container rigid foam
KR100512355B1 (ko) * 2003-02-19 2005-09-02 주식회사 엘지화학 폴리염화비닐 발포체
US20060103045A1 (en) 2004-11-17 2006-05-18 O'brien-Bernini Frank C Wet use chopped strand glass as reinforcement in extruded products
US20070004838A1 (en) * 2005-07-01 2007-01-04 Dimanshteyn Felix A Ultra-low petroleum plastics
US8029704B2 (en) * 2005-08-25 2011-10-04 American Thermal Holding Company Flexible protective coating
WO2007064065A2 (en) * 2005-11-30 2007-06-07 Lg Chem, Ltd. Microcellular foam of thermoplastic resin prepared with die having improved cooling property and method for preparing the same
US7652087B2 (en) 2006-02-21 2010-01-26 American Thermal Holdings Company Protective coating
MX2007009016A (es) * 2007-07-26 2009-02-19 Pyn S A De C V Cubierta decorativa y protectora antideslizante de usos multiples, su composicion y proceso de produccion de la misma.
WO2020229416A1 (en) 2019-05-14 2020-11-19 Nouryon Chemicals International B.V. Pvc foams

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4456572A (en) * 1981-11-16 1984-06-26 Shin-Etsu Chemical Co., Ltd. Method for the preparation of a foamed body of a vinyl chloride-based resin composition
JPH03273035A (ja) 1990-03-22 1991-12-04 Asahi Chem Ind Co Ltd 高断熱性重合体押出発泡体
US5278196A (en) * 1993-03-25 1994-01-11 Great Lakes Chemical Corp. Hydrofluorocarbon compositions as blowing agents for cellular plastics
AU6329696A (en) * 1995-06-08 1997-01-09 M. Karl Brandt Blowing agent composition and a method for making a blowing agent
DE19822945C2 (de) * 1998-05-22 2001-04-26 Solvay Fluor & Derivate Verfahren zur Herstellung von geschäumten thermoplastischen Kunststoffen und Treibmittelzusammensetzung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102229476A (zh) * 2011-06-13 2011-11-02 祁守岗 一种发泡剂
CN106827371A (zh) * 2017-01-21 2017-06-13 温岭东方红车料有限公司 自行车坐垫及其套皮的加工方法

Also Published As

Publication number Publication date
EP1148087A3 (en) 2001-12-19
JP2001302836A (ja) 2001-10-31
US6225365B1 (en) 2001-05-01
EP1148087A2 (en) 2001-10-24
EP1148087B1 (en) 2005-11-09
DE60114694T2 (de) 2006-07-20
DE60114694D1 (de) 2005-12-15
MXPA01003927A (es) 2002-04-15
HK1041236A1 (zh) 2002-07-05
CA2335263A1 (en) 2001-10-19
ES2250309T3 (es) 2006-04-16

Similar Documents

Publication Publication Date Title
CN1318459A (zh) Pvc泡沫制品
US4877815A (en) Nucleating agents for thermoplastic resins
CN101982495B (zh) 一种塑料的制备工艺、制品及其应用
US20150191580A1 (en) Fly ash and cinder strengthened thermoplastic
US5416129A (en) Closed cell, low density ethylenic polymer foam produced with inorganic halogen-free blowing agents
CA2194171A1 (en) Compatibilized lcp blends
CN112694689A (zh) 一种高流动性注塑拼接地板pvc改性材料及其制备方法
JP2628640B2 (ja) 難燃性熱可塑性ポリウレタン樹脂組成物
US20110204543A1 (en) Method for the preparation of pre-reinforced and reinforced PVC polymers and devices thereof
KR910003721B1 (ko) 표면 특성이 우수한 경질 폴리염화비닐 구조 발포체의 제조 방법
EP0418966B1 (en) Vinyl chloride polymer composition with improved fusion properties
WO1998016579A1 (en) Heat stabilized, flame retardant thermoplastic polymer compositions
US4451586A (en) Process and apparatus for manufacturing flame retardant flexible foamed articles
JP2003292712A (ja) 塩素化塩化ビニル系樹脂組成物およびそれを押出成形してなる成形品
US20100317754A1 (en) Method of making window covering
CN103289357A (zh) 电线包覆用哑光性组合物及电线用哑光性壳层
JPH05125137A (ja) 熱可塑性ポリウレタン樹脂組成物の製造方法
EP2350172B1 (en) Method for the preparation of pre-reinforced and reinforced pvc polymers and devices thereof
DE19935108C2 (de) Zusammensetzungen aus Polyethylen hoher Dichte und Poly(ethylennaphthalat)
TWI483994B (zh) 電線包覆用啞光性組成物及電線用啞光性殼層
Howick Plasticizers
HU212712B (en) Soft pvc mixture and granulate suitable for extruding, comprising chlorinated polyethylene
Drinkhill Advances in chemical blowing agents for polymers
CA2741968C (en) Method for the preparation of pre-reinforced and reinforced pvc polymers and devices thereof
JPS63139927A (ja) 軟質押出発泡用塩化ビニル系樹脂組成物

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1041236

Country of ref document: HK