CN114044995A - 一种pvdc高阻隔基材膜及其制备方法 - Google Patents
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- 229920001328 Polyvinylidene chloride Polymers 0.000 title claims abstract description 26
- 239000005033 polyvinylidene chloride Substances 0.000 title claims abstract description 26
- 239000000758 substrate Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 229920001577 copolymer Polymers 0.000 claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000012745 toughening agent Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 6
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical group [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000004383 yellowing Methods 0.000 claims description 6
- 238000010096 film blowing Methods 0.000 claims description 4
- 238000000071 blow moulding Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 22
- 239000005038 ethylene vinyl acetate Substances 0.000 description 10
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 239000002356 single layer Substances 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/08—Homopolymers or copolymers of vinylidene chloride
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
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- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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Abstract
本发明涉及一种PVDC高阻隔基材膜，所述基材膜按照质量份数包括：偏氯乙烯‑丙烯酸甲酯共聚物VDC‑MA树脂600‑650份；氯乙烯‑氯乙烯共聚物PVDC树脂580‑630份；增韧剂15‑25份；润滑剂6‑10份。本发明的目的在于解决或至少减轻借用生产肠衣膜的原料生产基材膜时阻隔性低的问题，提供一种PVDC高阻隔基材膜及其制备方法。
Description
技术领域
本发明涉及有基材膜技术领域，尤其涉及一种PVDC高阻隔基材膜及其制备方法。
背景技术
目前的PVDC基材膜采用的原料是借用生产肠衣膜的原料，其型号是SLV20，这种型号的树脂的阻隔性用于生产双层肠衣膜时，由于双层膜的互补性且厚度较大，完全可以满足肠衣膜的保质保鲜需要，但是用来生产基材膜时，由于基材膜是单层膜，且厚度只有肠衣膜总厚度的四分之一，这样的情况下，这种基材膜的阻隔性就有点低了，几乎不能满足保质保鲜的需求。
发明内容
本发明的目的在于解决或至少减轻借用生产肠衣膜的原料生产基材膜时阻隔性低的问题，提供一种PVDC高阻隔基材膜及其制备方法。
本发明是通过以下技术方案实现的：
一种PVDC高阻隔基材膜，所述基材膜按照质量份数包括：
偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂600-650份；
氯乙烯-氯乙烯共聚物PVDC树脂580-630份；
增韧剂15-25份；
润滑剂6-10份。
为了进一步实现本发明，可优先选用以下技术方案：
优选的，所述增韧剂包括葵二酸二丁酯和EVA，所述葵二酸二丁酯和EVA的质量比为4:3。
其中，葵二酸二丁酯无毒，可用于与食品接触的包装材料，制品手感良好。EVA是乙烯－乙酸乙烯酯共聚物，它是由乙烯和乙酸乙烯共聚而制得，英文名称为：Ethylene VinylAcetate，简称为EVA。EVA由于在分子链中引入了乙酸乙烯单体，从而降低了结晶度，提高了柔韧性、抗冲击性、填料相溶性和热密封性能。EVA和葵二酸二丁酯一同作用于偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂和氯乙烯-氯乙烯共聚物PVDC树脂，使成品基材膜具有良好的柔韧性。
优选的，所述润滑剂包括芥酸酰胺和二氧化硅，所述芥酸酰胺和二氧化硅的质量比为4:25。
芥酸酰胺和二氧化硅共同作用于偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂和氯乙烯-氯乙烯共聚物PVDC树脂，在吹塑成膜时起到爽滑和防粘的作用。
优选的，所述基材膜按照质量份数还包括消黄剂，所述消黄剂为群青EP-19，所述群青EP-19和偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂的质量比为1:2500。
一种PVDC高阻隔基材膜的制备方法，包括以下步骤：
步骤1)熔融挤出
将所有原料均匀混合后通过螺杆挤出机进行融合和一次成型；
步骤2)定型调温
将步骤1)中一次成型后的融合物引导至冷水槽进行定型，定型后进入温水槽进行调温；
步骤3)吹塑成膜
将步骤2)中调温后的融合物通过吹膜设备得到成品基材膜。
优选的，所述温水槽内温水的温度为55℃-60℃。
通过上述技术方案，本发明的有益效果是：
PVDC基材膜采用的原料是借用生产肠衣膜的原料，其原料是型号为SLV20的VDC树脂，由于基材膜是单层膜，且厚度只有肠衣膜总厚度的四分之一，因此这种基材膜的阻隔性较低，无法满足保质保鲜的需求。MA类树脂是VDC树脂与丙烯酸甲酯的共聚物，其阻隔性能远优于VDC树脂。
单一采用MA类树脂虽然能保障基材膜的阻隔性，但其吹胀比较低，不易吹开，制膜时所要求的加工工艺复杂，变相提高了生产成本，因此由该材料生产的基材膜在市场上不具有竞争性。
本发明将MA类树脂与VDC树脂混合使用，配以增韧剂和润滑剂，在采用VDC树脂制备基材膜工艺的基础上对一些工艺参数进行调整，进而得到工艺简单、阻隔性良好的基材膜。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1：
一种PVDC高阻隔基材膜，所述基材膜按照质量份数包括：
偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂625份；
氯乙烯-氯乙烯共聚物PVDC树脂606.25份；
增韧剂17.5份；
润滑剂7.25份。
所述增韧剂包括葵二酸二丁酯和EVA，所述葵二酸二丁酯和EVA的质量比为4:3。
所述润滑剂包括芥酸酰胺和二氧化硅，所述芥酸酰胺和二氧化硅的质量比为4:25。
所述基材膜按照质量份数还包括消黄剂，所述消黄剂为群青EP-19，所述群青EP-19和偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂的质量比为1:2500。
实施例2：
一种PVDC高阻隔基材膜的制备方法，包括以下步骤：
步骤1)熔融挤出
将所有原料均匀混合后通过螺杆挤出机进行融合和一次成型；
步骤2)定型调温
将步骤1)中一次成型后的融合物引导至冷水槽进行定型，定型后进入温水槽进行调温；
步骤3)吹塑成膜
将步骤2)中调温后的融合物通过吹膜设备得到成品基材膜。
所述温水槽内温水的温度为55℃。
实施例3：性能指标
PVDC基材膜采用的原料是借用生产肠衣膜的原料，其原料是型号为SLV20的VDC树脂，由于基材膜是单层膜，且厚度只有肠衣膜总厚度的四分之一，因此这种基材膜的阻隔性较低，无法满足保质保鲜的需求。MA类树脂是VDC树脂与丙烯酸甲酯的共聚物，其阻隔性能远优于VDC树脂。
单一采用MA类树脂虽然能保障基材膜的阻隔性，但其吹胀比较低，不易吹开，制膜时所要求的加工工艺复杂，变相提高了生产成本，因此由该材料生产的基材膜在市场上不具有竞争性。
本发明将MA类树脂与VDC树脂混合使用，配以增韧剂和润滑剂，在采用VDC树脂制备基材膜工艺的基础上对一些工艺参数进行调整，进而得到工艺简单、阻隔性良好的基材膜。
最后应说明的是：以上仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (6)
1.一种PVDC高阻隔基材膜，其特征在于，所述基材膜按照质量份数包括：
偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂600-650份；
氯乙烯-氯乙烯共聚物PVDC树脂580-630份；
增韧剂15-25份；
润滑剂6-10份。
2.根据权利要求1所述的一种PVDC高阻隔基材膜，其特征在于，所述增韧剂包括葵二酸二丁酯和EVA，所述葵二酸二丁酯和EVA的质量比为4:3。
3.根据权利要求1所述的一种PVDC高阻隔基材膜，其特征在于，所述润滑剂包括芥酸酰胺和二氧化硅，所述芥酸酰胺和二氧化硅的质量比为4:25。
4.根据权利要求1所述的一种PVDC高阻隔基材膜，其特征在于，所述基材膜按照质量份数还包括消黄剂，所述消黄剂为群青EP-19，所述群青EP-19和偏氯乙烯-丙烯酸甲酯共聚物VDC-MA树脂的质量比为1:2500。
5.一种PVDC高阻隔基材膜的制备方法，其特征在于，包括以下步骤：
步骤1)熔融挤出
将所有原料均匀混合后通过螺杆挤出机进行融合和一次成型；
步骤2)定型调温
将步骤1)中一次成型后的融合物引导至冷水槽进行定型，定型后进入温水槽进行调温；
步骤3)吹塑成膜
将步骤2)中调温后的融合物通过吹膜设备得到成品基材膜。
6.根据权利要求5所述的一种PVDC高阻隔基材膜的制备方法，其特征在于，所述温水槽内温水的温度为55℃-60℃。
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996034050A1 (fr) * | 1995-04-27 | 1996-10-31 | Kureha Chemical Industry Co., Ltd. | Composition de resine copolymere de chlorure de vinylidene, film obtenu a partir de cette composition, procede d'extrusion destine a cette composition et procede d'elaboration du film |
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