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WO2021121145A1 - 低密度uv专用板及其制备方法 - Google Patents

低密度uv专用板及其制备方法 Download PDF

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Publication number
WO2021121145A1
WO2021121145A1 PCT/CN2020/135658 CN2020135658W WO2021121145A1 WO 2021121145 A1 WO2021121145 A1 WO 2021121145A1 CN 2020135658 W CN2020135658 W CN 2020135658W WO 2021121145 A1 WO2021121145 A1 WO 2021121145A1
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WIPO (PCT)
Prior art keywords
parts
density
board
low
foaming
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PCT/CN2020/135658
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English (en)
French (fr)
Inventor
段培彩
刘娜
林立东
高炳坤
丁峰
Original Assignee
山东汇丰新材料科技股份有限公司
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Publication of WO2021121145A1 publication Critical patent/WO2021121145A1/zh

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    • 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
    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/0066—Use of inorganic compounding 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
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • 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
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/18—Binary blends of expanding agents
    • 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
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/30—Polymeric waste or recycled polymer
    • 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
    • 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
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • C08J2400/00—Characterised by the use of unspecified polymers
    • C08J2400/30—Polymeric waste or recycled polymer
    • 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
    • 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
    • C08J2423/06—Polyethene
    • 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
    • C08J2425/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/02—Homopolymers or copolymers of hydrocarbons
    • C08J2425/04—Homopolymers or copolymers of styrene
    • C08J2425/08—Copolymers of styrene
    • C08J2425/12—Copolymers of styrene with unsaturated nitriles
    • 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
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • 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
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/26—Silicon- containing compounds

Definitions

  • the invention relates to a low-density UV special board and a preparation method thereof, and belongs to the technical field of a novel polyvinyl chloride foamed board.
  • the existing low-density advertising boards have the characteristics of being nailable, chiselable, easy to process, and versatile in processing.
  • the existing low-density advertising boards will have pitting, streaks and wrinkles during the later reprocessing process. Paint or paint surface blooming and other problems, there are also defects such as poor surface smoothness, aesthetic effect and poor outdoor decoration effect.
  • the plate has poor adaptability to various indoor and outdoor conditions, and the heat shrinkage rate of the plate is easily affected by the outside world. Environmental impact, short service life.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a low-density UV special board and a preparation method thereof.
  • the low-density UV special board is composed of the following raw materials in parts by weight:
  • the invention can not only save the production cost but also improve the hardness and brightness of the board.
  • the main components of HL-801 are styrene and acrylonitrile. Styrene has good fluidity and hardness; acrylonitrile has improved strength and hardness, and both will promote plasticization. After adding HL-801, the fluidity will be very good, so the original internal lubricant SP-60 in the formula can be omitted.
  • the internal lubricant SP-60 as a lubricant and the presence of low molecular weight substances will weaken the melt strength And reduce the hardness, so the omission of SP-60 is beneficial to increase the hardness of the board, and the melt strength will also increase.
  • foaming regulators HL-901, HL-100 and HL-801 in the formula of the present invention can promote plasticization and improve fluidity.
  • HL-100 plasticizes faster and can better promote plasticization.
  • HL-901 has high viscosity and can effectively improve the hardness of the board. The combination of the three will better promote plasticization, promote fluidity and increase melt strength, and significantly improve the strength and hardness of the board.
  • the preferred low-density UV special board is composed of the following raw materials in parts by weight:
  • Polyvinyl chloride SG-8 resin 60 parts, heavy calcium 55 parts, advertising board recycling material 60 parts, foaming regulator HL-90 2.5 parts, foaming regulator HL-100 1.5 parts, HL-801 1.5 parts, calcium Zinc stabilizer 3.4 parts, internal lubricant 1801 stearic acid 0.15 parts, external lubricant polyethylene wax 0.38 parts, high temperature external lubrication N-14P 0.35 parts, plasticizer RL-925F 0.25 parts, exothermic AC foaming agent 0.72 parts, 1.75 parts of endothermic NS-603 foaming agent, 0.25 parts of blue light brightener, 10 parts of diatomaceous earth.
  • the invention adds diatomaceous earth.
  • the diatomaceous earth has the characteristics of environmental protection, formaldehyde absorption, air permeability, etc.
  • the diatomaceous earth is combined with the foaming process to greatly reduce the regulator, and the diatomaceous earth can be built into the plate cells to form a surface With the microporous structure, this technology has now become the exclusive competitive advantage of this board.
  • the preferred heavy calcium needs to be activated before use.
  • the preparation method of the low-density UV special board includes the following steps:
  • the extruder barrel temperature is set at 175-180°C
  • the mold temperature is set at 170°C
  • the die lip oil temperature machine is set at 175-190°C
  • the die lip of the production line is equipped with a chiller
  • the water temperature is set at 30°C
  • the shape is set
  • the cooling water is set at 15-25°C.
  • the invention improves on the original mixing procedure. All raw materials can be mixed evenly after hot mixing and cold mixing, so that the lubricating system can be better coated on the surface of PVC.
  • the materials are made according to polyvinyl chloride.
  • Resin-calcium powder-stabilizer-foaming agent-lubricant-foaming regulator-brightening agent-advertising board return material is put into the hot mixing pot and stirred and heated to 120°C, and the mixture is quickly put into cold mixing Stir in the pot and cool down to 50°C.
  • the surface flatness and smoothness of the board surface of the product of the present invention are obviously improved, and the hardness and strength of the board are also improved.
  • the scratch resistance and abrasion resistance of the board also increase with the strength and hardness of the board. There is a significant increase in the increase of the thermal deformation and the shrinkage rate of the forming can be well reduced at the same time.
  • the low-density UV special board of the invention does not contain lead, is non-toxic, benzene and formaldehyde.
  • the invention adopts a brand-new formula and mixing processing technology, which is a major breakthrough in the traditional formula and technology.
  • the low-density UV special board of the present invention solves the problems of pitting, wrinkling, unpainted or painted surface of the UV board in the later reprocessing process, and the board formed by drying after UV has a bright surface treatment , Bright color, strong visual impact, wear resistance, strong chemical resistance, long service life, good chemical stability, strong corrosion resistance, high hardness, high strength, UV resistance (aging resistance), fire resistance It is combustible (self-extinguishing), has reliable insulation performance, does not change color, and is easy to clean. It is an ideal environmental protection and special material for advertising cabinets.
  • the invention not only reduces the production cost of production and processing enterprises, but also reduces the problem of wasting paint in the UV processing process of customers, and reduces the processing cost of customers. After the promotion of this product, it has quickly become the first choice in the market, and it has also been unanimously received by the industry and customers. Praise.
  • the low-density UV special board is composed of the following raw materials in parts by weight:
  • the heavy calcium needs to be activated before use.
  • the preparation method of the low-density UV special board includes the following steps:
  • the barrel temperature of the extruder is set at 175-180°C
  • the mold temperature is set at 170°C
  • the die lip oil temperature machine is set at 175-190°C
  • the die lip of the production line is equipped with a chiller
  • the water temperature is set at 30°C.
  • the cooling water is set at 15-25°C.
  • the low-density UV special board is composed of the following raw materials in parts by weight:
  • Polyvinyl chloride SG-8 resin 60 parts, heavy calcium 55 parts, advertising board recycling material 60 parts, foaming regulator HL-90 2.5 parts, foaming regulator HL-100 1.5 parts, HL-801 1.5 parts, calcium Zinc stabilizer 3.4 parts, internal lubricant 1801 stearic acid 0.15 parts, external lubricant polyethylene wax 0.38 parts, high temperature external lubrication N-14P 0.35 parts, plasticizer RL-925F 0.25 parts, exothermic AC foaming agent 0.72 parts, 1.75 parts of endothermic NS-603 foaming agent, 0.25 parts of blue light brightener, 10 parts of diatomaceous earth.
  • the heavy calcium needs to be activated before use.
  • the preparation method of the low-density UV special board includes the following steps:
  • the barrel temperature of the extruder is set at 175-180°C
  • the mold temperature is set at 170°C
  • the die lip oil temperature machine is set at 175-190°C
  • the die lip of the production line is equipped with a chiller
  • the water temperature is set at 30°C.
  • the cooling water is set at 15-25°C.
  • the low-density UV special board is composed of the following raw materials in parts by weight:
  • the heavy calcium needs to be activated before use.
  • the preparation method of the low-density UV special board includes the following steps:
  • the barrel temperature of the extruder is set at 175-180°C
  • the mold temperature is set at 170°C
  • the die lip oil temperature machine is set at 175-190°C
  • the die lip of the production line is equipped with a chiller
  • the water temperature is set at 30°C.
  • the cooling water is set at 15-25°C.
  • the hardness of the low-density UV special board of the present invention is significantly improved, the surface Shore hardness reaches more than 35D, the board surface is smooth, the abrasion resistance is good, and the thermal shrinkage rate can reach the standard ( ⁇ 10 ⁇ ) or less. It is a good solution to the problem of heat shrinkage after the later heating process, and the product of the present invention is superior to traditional low-density board products in various properties.

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  • 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)
  • Emergency Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

一种低密度UV专用板及其制备方法，属于新型聚氯乙烯发泡板材技术领域。解决了现有技术存在的后加工过程中会出现麻点、条痕起皱、涂不上漆或漆面发花等问题，其由聚氯乙烯SG-8型树脂50-70份，重钙50-60份，广告板回收料50-65份，发泡调节剂HL-90 2-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P、塑化剂RL-925、放热型AC发泡剂、吸热型NS-603发泡剂、蓝光增白剂、硅藻土组成。其可用于生产低密度UV专用板。

Description

低密度UV专用板及其制备方法 技术领域
本发明涉及一种低密度UV专用板及其制备方法，属于新型聚氯乙烯发泡板材技术领域。
背景技术
现有的低密度广告板材具有可钉、可凿、易加工、加工用途广泛等特点，但是现有的低密度广告板材在后期再加工过程中会出现麻点、条痕起皱、涂不上漆或漆面发花等问题，还存在板材表面光滑性不好，美观效果以及室外装饰效果不佳等缺陷，另外板材对各种室内外条件适应性不佳，板材的热收缩率易受外界环境影响，使用寿命短。
发明内容
本发明的目的在于克服现有技术的不足，提供一种低密度UV专用板及其制备方法。
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂50-70份，重钙50-60份，广告板回收料50-65份，发泡调节剂HL-90 2-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F 0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
本发明通过使用PVC加工助剂HL-801配合高润滑体搭配生产工艺，既能节省生产成本又能提高板材的硬度及光亮度。HL-801主要的成分是苯乙烯和丙烯腈，苯乙烯有好的流动性和硬度；丙烯腈对于强度和硬度都有所改善，两者都会促进塑化。加入了HL-801后，流动性会很好，所以可以省略配方中原有的内润滑剂SP-60，内润滑剂SP-60作为一个滑剂和低分子量物质的存在，它会减弱熔体强度和降低硬度，因此省略SP-60有利于提高板子的硬度，熔体强度也会增加。本发明配方中发泡调节剂HL-901、HL-100，HL-801的加入可以促进塑化和提高流动性。HL-100塑化快也能更好的促进塑化，HL-901粘度高，能够有效的提高板子的硬度。三者搭配使用会能更好的促进塑化促进流动性及增加熔体强度，对板子的强度和硬度有了明显的改善提高。
优选的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸1801 0.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热 型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
本发明加入了硅藻土，硅藻土是具有环保、吸甲醛、透气等特点，硅藻土配合发泡工艺，将调节剂大大降低就可以将硅藻土内置于板材泡孔中，形成表面微孔的结构，目前这一技术已经成为本板材的独家竞争优势。
优选的重钙使用前需要进行活化处理。
所述的低密度UV专用板的制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
本发明在原有混料程序上进行改进，所有原材料在热混及冷混后能很好的做到混料均匀，能使润滑体系更好的包覆在PVC表面，首先将物料按照聚氯乙烯树脂-钙粉-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-广告板回料的顺序依次投入热混锅内搅拌升温至120℃，迅速将混合料放入冷混锅内搅拌降温至50℃。通过全新的配方和工艺本发明产品的表面平整度以及板面的光滑度均有明显的提高，也同时提高了板材的硬度和强度，板面耐刮性耐磨性也随着板子的强度硬度的提高而有明显的提高，同时也能很好的降低了热变形和成形收缩率。
与现有技术相比本发明的有益效果是：
本发明低密度UV专用板板材不含铅，无毒无苯无甲醛，本发明采用了全新的配方和混料加工工艺，是在传统配方和工艺上实现的重大突破。
本发明低密度UV专用板解决了UV板在后期再加工过程中的麻点、条痕起皱、涂不上漆或漆面发花等问题，经过UV后干燥形成的板材，有亮光表面处理，色泽鲜艳、具有很强的视觉冲击力，耐磨，抗化学性强，使用寿命长，良好的化学稳定性，耐腐蚀性强，硬度大，强度大，防紫外线(耐老化)，耐火阻燃(具有自熄性)，绝缘性能可靠、不变色，易清理，是理想的环保型及广告橱柜的专用材料。本发明既降低了生产加工企业的生产成本，也减少了客户UV加工过程中浪费漆的问题，降低了客户的加工成本，本产品推广后迅速成为市场的首选，也受到了业界及客户的一致好评。
具体实施方式
下面结合具体实施例对本发明做进一步说明。
实施例1
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂50份，重钙50份，广告板回收料50份，发泡调节剂HL-90 2份，发泡调节剂HL-100 1份，HL-801 1份，钙锌稳定剂3.3份，内润滑剂硬脂酸1801 0.1份，外润滑剂聚乙烯蜡0.35份，高温外润滑N-14P 0.3份，塑化剂RL-925F 0.2份，放热型AC发泡剂0.7份，吸热型NS-603发泡剂1.70份，蓝光增白剂0.25份，硅藻土8份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实施例2
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸1801 0.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实施例3
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂70份，重钙60份，广告板回收料65份，发泡调节剂HL-90 2-3 份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F 0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实验：
将实施例1-3的产品与传统配方的低密度广告板材进行性能测试，如下：
Figure PCTCN2020135658-appb-000001
从上表数据可以看出，本发明低密度UV专用板硬度明显提高，表面邵氏硬度达到35D以上，板面光滑，耐磨性好，热收缩率能达到标准(≤10‰)以下，能很好的解决后期加热加工过程后的热收缩问题，本发明产品在各种性能均优于传统的低密度板材产品。

Claims (5)

  1. 一种低密度UV专用板，其特征在于由以下重量份的原料组成：
    聚氯乙烯SG-8型树脂50-70份，重钙50-60份，广告板回收料50-65份，发泡调节剂HL-90 2-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F 0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
  2. 根据要求1所述的低密度UV专用板，其特征在于由以下重量份的原料组成：
    聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸1801 0.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
  3. 根据要求1或2所述的低密度UV专用板，其特征在于：所述的重钙使用前需要进行活化处理。
  4. 一种低密度UV专用板的制备方法，其特征在于包括以下步骤：
    首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
    其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
  5. 根据权利要求4所述的低密度UV专用板的制备方法，其特征在于：制备的板材密度为0.33-0.40g/cm 3，厚度为6-10mm。
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