WO2021143408A1 - 厚度为15-18mm的高亮度免漆板 - Google Patents

厚度为15-18mm的高亮度免漆板 Download PDF

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WO2021143408A1
WO2021143408A1 PCT/CN2020/135657 CN2020135657W WO2021143408A1 WO 2021143408 A1 WO2021143408 A1 WO 2021143408A1 CN 2020135657 W CN2020135657 W CN 2020135657W WO 2021143408 A1 WO2021143408 A1 WO 2021143408A1
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parts
thickness
free board
paint
brightness
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PCT/CN2020/135657
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English (en)
French (fr)
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段培彩
刘娜
林立东
高炳坤
丁峰
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山东汇丰新材料科技股份有限公司
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Publication of WO2021143408A1 publication Critical patent/WO2021143408A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • C08J9/04—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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a high-brightness paint-free board with a thickness of 15-18 mm, which belongs to the technical field of polyvinyl chloride foamed boards.
  • the high brightness of the bright board is basically achieved by UV paint.
  • the UV painted bright board has the characteristics of nailing, chiselling, and easy processing, so it has a wide range of applications.
  • the brightness of the UV paint bright board is greatly affected by the performance of the UV paint.
  • the UV paint itself is easy to scratch and wear.
  • the hardness and strength of the existing UV paint bright board need to be improved, the molding shrinkage rate is relatively large, and the production cost is relatively high.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a high-brightness paint-free board with a thickness of 15-18 mm.
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials by weight:
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials in parts by weight:
  • the increase in the amount of external lubricant in the present invention is beneficial to improve the brightness of the board.
  • a metal sheet in the shape of a wavy line is provided in the center of the plate.
  • the vertical distance from the wave crest to the wave trough of the metal sheet is 6-8 mm.
  • the width of the metal sheet is 8-12 mm.
  • the distance between two adjacent metal sheets is 13-17 times the width of the metal sheets.
  • the invention is provided with a wavy-shaped metal sheet in the center of the plate, and limits the width of the metal sheet and the distance between the two metal sheets, which can not only greatly improve the toughness, hardness and weather resistance of the plate, but also can effectively avoid the production cost of the plate. Increase. By limiting the vertical distance from the wave crest to the wave trough of the metal sheet, the post-processing procedures such as embossing and carving of the sheet are not affected.
  • the preparation method of the high-brightness paint-free board with a thickness of 15-18mm includes the following steps: the raw materials are heated and mixed and then cooled and transported to an extruder with a temperature of 175-180°C, and heated by a barrel with eight-section twin-screws. It is well plasticized and transported to a die with a die opening of 1.7-1.9mm and a temperature of 165-175°C. The die lip is extruded, cooled and pressed through the sizing table, and the traction machine moves out and cuts to form a finished product.
  • the temperature of the cooling water in the shaping station is 18-20°C.
  • the external lubricant is non-polar and can be completely integrated into the PVC molecule at high temperature, but it will precipitate on the surface when the temperature is reduced to its melting point. Therefore, the present invention uses a higher processing temperature in the extruder and mold, but in the mold The lip is cooled instantly with water with a water temperature of 18-20°C, and the die opening is changed from the conventional 1.9-2.2mm to 1.7-1.9mm, so that the cooling water can fully contact the extruded material and generate a certain pressure. The external lubricant is instantly precipitated out of the surface to form a fine and smooth mirror surface.
  • the sizing table of the present invention adopts low-temperature treatment to make the surface smooth after the die exit, which can be cooled evenly, so that the surface of the plate has a better reflective effect and the surface of the plate is smooth.
  • High hardness The surface hardness of the product of the invention and the brightness of the board surface are obviously increased, and it has better flame retardancy and weather resistance, and at the same time, the heat deformation temperature of the board is increased, and the molding shrinkage rate is reduced.
  • the high-brightness paint-free board of the present invention does not contain lead, is non-toxic, benzene, and formaldehyde.
  • the produced board has high brightness and can avoid the use of UV paint.
  • a wavy-shaped metal sheet is arranged in the center of the board, which not only greatly improves the surface hardness and toughness of the board, but also greatly improves the flame retardancy and weather resistance of the board, and at the same time increases the heat deformation temperature of the board, and reduces the forming Shrinkage.
  • Figure 1 is a cross-sectional view of the plate and metal sheet of the present invention
  • Figure 2 is a schematic diagram of the structure of the plate and metal sheet of the present invention.
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials in parts by weight:
  • Polyvinyl chloride SG8 resin 75 parts, heavy calcium 55 parts, recycled material 30 parts, foaming regulator 300 9 parts, calcium zinc stabilizer 3.5 parts, internal lubricant SP-60 0.3 parts, external lubricating PE wax 0.5 parts, High temperature external lubricant AP 0.3 parts, plasticizer OA6 0.3 parts, exothermic AC foaming agent 0.3 parts, endothermic NS-603 foaming agent 1.3 parts, blue light brightener 0.25 parts.
  • the said high-brightness paint-free board with a thickness of 15-18mm, the center of the plate 1 is provided with a wave-shaped metal sheet 2 with a width of 8-12mm, and the vertical distance from the peak to the trough of the metal sheet 2 is 6mm, two adjacent The distance between the metal sheets 2 is 13 times the width of the metal sheets 2.
  • the preparation method of the high-brightness paint-free board with a thickness of 15-18mm includes the following steps: each raw material is heated and mixed and then cooled and transported to an extruder at a temperature of 175°C, and heated by an eight-segment twin screw in a barrel to plasticize it. It is transferred to a die with a die opening of 1.7mm and a temperature of 165°C. The die lip is extruded, and the lip is cooled and pressed through a sizing table with a water temperature of 18°C. The tractor moves out and cuts and forms the finished product.
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials in parts by weight:
  • the said high-brightness paint-free board with a thickness of 15-18mm, the center of the plate 1 is provided with a wavy line-shaped metal sheet 2 with a width of 10mm, and the vertical distance from the peak to the trough of the metal sheet 2 is 7mm.
  • the distance between the metal sheets 2 is 15 times the width of the metal sheets 2.
  • the method for preparing the high-brightness paint-free board with a thickness of 15-18mm includes the following steps: the raw materials are heated and mixed and then cooled and transported to an extruder at a temperature of 178°C, and heated by an eight-segment twin screw in a barrel to make it plastic. It is transferred to a mold with a 1.8mm die opening and a temperature of 170°C. The die lip is extruded, and the lip is cooled and pressed through a sizing table with a water temperature of 19°C. The tractor moves out and cuts and forms the finished product.
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials in parts by weight:
  • the said high-brightness paint-free board with a thickness of 15-18mm, the center of the plate 1 is provided with a metal sheet 2 with a wavy line shape and a width of 12mm.
  • the vertical distance from the peak to the trough of the metal sheet 2 is 8mm.
  • the distance between the metal sheets 2 is 17 times the width of the metal sheets 2.
  • the preparation method of the described high-brightness paint-free board with a thickness of 15-18mm includes the following steps: the raw materials are heated and mixed and then cooled and transported to an extruder at a temperature of 180°C. It is transferred to a die with a die opening of 1.9mm and a temperature of 175°C, extrudes the die lip, passes through a setting table with a water temperature of 20°C, is cooled and pressed, and then the tractor moves out and cuts and forms the finished product.
  • the high-brightness paint-free board with a thickness of 15-18mm is composed of the following raw materials in parts by weight:
  • the said high-brightness paint-free board with a thickness of 15-18mm, the center of the plate 1 is provided with a metal sheet 2 with a wavy line shape and a width of 11mm.
  • the vertical distance from the peak to the trough of the metal sheet 2 is 6.5mm.
  • the distance between the metal sheets 2 is 14 times the width of the metal sheets 2.
  • the preparation method of the high-brightness paint-free board with a thickness of 15-18mm includes the following steps: each raw material is heated and mixed and then cooled and transported to an extruder at a temperature of 177°C, and heated by an eight-segment twin screw in a barrel to make it plastic.
  • the chemical is well transported to a die with a 1.75mm die opening and a temperature of 168°C.
  • the die lip is extruded and qualitatively cooled through a setting table with a water temperature of 18-20°C.
  • the tractor moves out and cuts and forms the finished product.
  • the hardness of the present invention is significantly improved, the surface Shore hardness reaches more than 75D, the surface brightness is high as a mirror, UV paint is free, the Vicat temperature reaches 85°C or more, the toughness is greatly increased, and the molding shrinkage rate is greatly reduced.
  • the various properties of the product of the invention are superior to traditional products.

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  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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Abstract

一种厚度为15-18mm的高亮度免漆板，属于聚氯乙烯发泡板材技术领域。所述免漆板由聚氯乙烯SG8型树脂75-80份，重钙55-60份，回收料30-40份，发泡调节剂300 9-10份，钙锌稳定剂3.5-3.8份，内润滑剂SP-60 0.3-0.4份，外润滑PE蜡0.5-0.6份，高温外润滑剂AP 0.3-0.4份，增塑剂OA6 0.3-0.4份，放热型AC发泡剂0.3-0.4份，吸热型NS-603发泡剂1.3-1.4份，蓝光增白剂0.25份组成。所述免漆板解决了现有产品表面亮度差，板材硬度和强度低的问题。

Description

厚度为15-18mm的高亮度免漆板 技术领域
本发明涉及一种厚度为15-18mm的高亮度免漆板，属于聚氯乙烯发泡板材技术领域。
背景技术
现有技术中，亮光板的高亮度基本都是通过UV漆实现的，UV漆亮光板具有可钉、可凿、易加工的特点，因此应用范围较广。但是UV漆亮光板的亮度受UV漆性能影响较大，UV漆本身易剐蹭、磨损，同时现有UV漆亮光板的板材硬度和强度有待提高，成型收缩率较大，生产成本相对较高。
发明内容
本发明要解决的技术问题是：克服现有技术的不足，提供一种厚度为15-18mm的高亮度免漆板。
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂75-80份，重钙55-60份，回收料30-40份，发泡调节剂300 9-10份，钙锌稳定剂3.5-3.8份，内润滑剂SP-60 0.3-0.4份，外润滑PE蜡0.5-0.6份，高温外润滑剂AP 0.3-0.4份，增塑剂OA6 0.3-0.4份，放热型AC发泡剂0.3-0.4份，吸热型NS-603发泡剂1.3-1.4份，蓝光增白剂0.25份。
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂78份，重钙58份，回收料35份，发泡调节剂300 9.5份，钙锌稳定剂3.6份，内润滑剂SP-60 0.35份，外润滑PE蜡0.55份，高温外润滑剂AP 0.35份，增塑剂OA6 0.35份，放热型AC发泡剂0.35份，吸热型NS-603发泡剂1.35份，蓝光增白剂0.25份。
本发明增加外润滑剂用量有利于提高板材亮度。
优选的，板材中心设有波浪线形状的金属片。
优选的，所述金属片波峰到波谷的垂直距离为6-8mm。
优选的，所述金属片的宽度为8-12mm。
优选的，两个相邻的所述金属片之间的距离是金属片宽度的13-17倍。
本发明在板材中心设有波浪线形状的金属片，并限定金属片的宽度和两个金属片之间的距离，不仅可以大大提高板材的韧性、硬度以及耐候性，还能够有效避免板材生产成本增加。通过限定金属片波峰到波谷的垂直距离，从而不影响板材进行压花、雕花等后加工程序。
所述的厚度为15-18mm的高亮度免漆板的制备方法，包括以下步骤：各原料热混后冷却输送至温度为175-180℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.7-1.9mm，温度为165-175℃的模具，挤出模唇，经由定型台冷却压合定性，牵引机迁出切割成型得到成品。
优选的，所述定型台中冷却水水温为18-20℃。
外润滑剂是非极性的，在高温时可以完全融入PVC分子中，但是温度降低到其熔点时会析出在表面，因此本发明在挤出机和模具采用了较高的加工温度，但是在模唇处采用水温为18-20℃的水瞬间冷却，并且把模口开口由常规的1.9-2.2mm改为1.7-1.9mm，让冷却水能够与挤出料充分接触，并产生一定的压力，让外润滑剂瞬间析出表面，形成细腻光滑镜面的表面，本发明定型台采用低温处理，使出模口后本就光滑的表面，能够冷却均匀，使板面反光效果更佳，板面平整，硬度高。本发明产品的表面硬度以及板面的光亮度明显增加，并且具有较好的阻燃和耐候性，也同时提高了板材的热变形温度，降低了成型收缩率。
与现有技术相比本发明的有益效果是：
本发明高亮度免漆板不含铅，无毒无苯无甲醛，通过对传统配方和工艺进行改进，使用高润滑体系搭配生产工艺，生产的板材亮度高，可以免用UV漆。本发明在板材中心设置波浪线形状的金属片，不仅大大提高了板材的表面硬度和韧性，也使得板材的阻燃性和耐候性大大提高，也同时提高了板材的热变形温度，降低了成型收缩率。
附图说明
图1是本发明板材和金属片的横截面图；
图2是本发明板材和金属片的结构示意图；
其中，1、板材；2、金属片。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
实施例1
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂75份，重钙55份，回收料30份，发泡调节剂300 9份，钙锌稳定剂3.5份，内润滑剂SP-60 0.3份，外润滑PE蜡0.5份，高温外润滑剂AP 0.3份，增塑剂OA6 0.3份，放热型AC发泡剂0.3份，吸热型NS-603发泡剂1.3份，蓝光增白剂0.25份。
所述的厚度为15-18mm的高亮度免漆板，板材1中心设有波浪线形状的宽度为8-12mm的金属片2，金属片2波峰到波谷的垂直距离为6mm，两个相邻的所述金属片2之间的距离 是金属片2宽度的13倍。
所述的厚度为15-18mm的高亮度免漆板的制备方法，包括以下步骤：各原料热混后冷却输送至温度为175℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.7mm，温度为165℃的模具，挤出模唇，经由水温为18℃的定型台冷却压合定性，牵引机迁出切割成型得到成品。
实施例2
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂78份，重钙58份，回收料35份，发泡调节剂300 9.5份，钙锌稳定剂3.6份，内润滑剂SP-60 0.35份，外润滑PE蜡0.55份，高温外润滑剂AP 0.35份，增塑剂OA6 0.35份，放热型AC发泡剂0.35份，吸热型NS-603发泡剂1.35份，蓝光增白剂0.25份。
所述的厚度为15-18mm的高亮度免漆板，板材1中心设有波浪线形状的宽度为10mm的金属片2，金属片2波峰到波谷的垂直距离为7mm，两个相邻的所述金属片2之间的距离是金属片2宽度的15倍。
所述的厚度为15-18mm的高亮度免漆板的制备方法，包括以下步骤：各原料热混后冷却输送至温度为178℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.8mm，温度为170℃的模具，挤出模唇，经由水温为19℃的定型台冷却压合定性，牵引机迁出切割成型得到成品。
实施例3
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂80份，重钙60份，回收料40份，发泡调节剂300 10份，钙锌稳定剂3.8份，内润滑剂SP-60 0.4份，外润滑PE蜡0.6份，高温外润滑剂AP 0.4份，增塑剂OA6 0.4份，放热型AC发泡剂0.4份，吸热型NS-603发泡剂1.4份，蓝光增白剂0.25份。
所述的厚度为15-18mm的高亮度免漆板，板材1中心设有波浪线形状的宽度为12mm的金属片2，金属片2波峰到波谷的垂直距离为8mm，两个相邻的所述金属片2之间的距离是金属片2宽度的17倍。
所述的厚度为15-18mm的高亮度免漆板的制备方法，包括以下步骤：各原料热混后冷却输送至温度为180℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.9mm，温度为175℃的模具，挤出模唇，经由水温为20℃的定型台冷却压合定性，牵引机迁出切割成型得到成品。
实施例4
所述的厚度为15-18mm的高亮度免漆板，由以下重量份的原料组成：
聚氯乙烯SG8型树脂777份，重钙56份，回收料38份，发泡调节剂300 9.9份，钙锌稳定剂3.7份，内润滑剂SP-60 0.33份，外润滑PE蜡0.53份，高温外润滑剂AP 0.3份，增塑剂OA6 0.4份，放热型AC发泡剂0.33份，吸热型NS-603发泡剂1.38份，蓝光增白剂0.25份。
所述的厚度为15-18mm的高亮度免漆板，板材1中心设有波浪线形状的宽度为11mm的金属片2，金属片2波峰到波谷的垂直距离为6.5mm，两个相邻的所述金属片2之间的距离是金属片2宽度的14倍。
所述的厚度为15-18mm的高亮度免漆板的制备方法，包括以下步骤：各原料热混后冷却输送至温度为177℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.75mm，温度为168℃的模具，挤出模唇，经由水温为18-20℃的定型台冷却压合定性，牵引机迁出切割成型得到成品。
将实施例1-4的产品和传统配方产品进行性能测试，具体结果如下表：
  表面硬度D 表面光滑度 表面亮度 UV性能 维卡温度℃ 韧性 成型收缩率
传统配方 55 磨砂面 90 UV 68 18 2.2％
实施例1 77 镜面 95.8 免UV 85 22 0.82％
实施例2 76 镜面 95.5 免UV 86 22 0.81％
实施例3 75 镜面 95.6 免UV 86 22 0.83％
实施例4 76 镜面 95.8 免UV 85 22 0.82％
由上表可以看出，本发明硬度明显提高，表面邵氏硬度达到75D以上，表面亮度高成镜面，免UV漆，维卡温度达到85℃以上，韧性大大增加，成型收缩率大幅度降低，本发明产品各种性能均优于传统产品。

Claims (8)

  1. 一种厚度为15-18mm的高亮度免漆板，其特征在于由以下重量份的原料组成：
    聚氯乙烯SG8型树脂75-80份，重钙55-60份，回收料30-40份，发泡调节剂300 9-10份，钙锌稳定剂3.5-3.8份，内润滑剂SP-60 0.3-0.4份，外润滑PE蜡0.5-0.6份，高温外润滑剂AP 0.3-0.4份，增塑剂OA6 0.3-0.4份，放热型AC发泡剂0.3-0.4份，吸热型NS-603发泡剂1.3-1.4份，蓝光增白剂0.25份。
  2. 根据权利要求1所述的厚度为15-18mm的高亮度免漆板，其特征在于由以下重量份的原料组成：
    聚氯乙烯SG8型树脂78份，重钙58份，回收料35份，发泡调节剂300 9.5份，钙锌稳定剂3.6份，内润滑剂SP-60 0.35份，外润滑PE蜡0.55份，高温外润滑剂AP 0.35份，增塑剂OA6 0.35份，放热型AC发泡剂0.35份，吸热型NS-603发泡剂1.35份，蓝光增白剂0.25份。
  3. 根据权利要求1或2所述的厚度为15-18mm的高亮度免漆板，其特征在于：板材中心设有波浪线形状的金属片。
  4. 根据权利要求3所述的厚度为15-18mm的高亮度免漆板，其特征在于：所述金属片波峰到波谷的垂直距离为6-8mm。
  5. 根据权利要求4所述的厚度为15-18mm的高亮度免漆板，其特征在于：所述金属片的宽度为8-12mm。
  6. 根据权利要求5所述的厚度为15-18mm的高亮度免漆板，其特征在于：两个相邻的所述金属片之间的距离是金属片宽度的13-17倍。
  7. 一种厚度为15-18mm的高亮度免漆板的制备方法，其特征在于包括以下步骤：各原料热混后冷却输送至温度为175-180℃的挤出机，经料筒八段双螺杆加热使其塑化良好输送至模口开口为1.7-1.9mm，温度为165-175℃的模具，挤出模唇，经由定型台冷却压合定性，牵引机迁出切割成型得到成品。
  8. 根据权利要求7所述的厚度为15-18mm的高亮度免漆板的制备方法，其特征在于：所述定型台中冷却水水温为18-20℃。
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