《塑料技术手册》是大型综合性手册,通过阅读、学习本手册,无论是专业人员还是非专业人员,都会很快熟悉和掌握塑料制品的设计和制造方法。本册内容包括:涂层概述,术语和性能介绍,树脂形成的基础,溶剂和涂料;铸造介绍,溶剂浇铸;反应注射成型介绍,设备,模具,处理,材料,成本;旋转成型介绍,机器,模具,设计,生产成本。
FIGURES
TABLES
ABBREVIATIONS
ACKNOWLEDGMENTS
PREFACE
ABOUT THE AUTHORS
10.COATING
OVERVIEW
Different Coating Aspect
TERM AND PERFORMANCE INTRODUCTION
Paint
Water—Based Paint
Varnish
Lacquer
Solvent
PROPERTIES OF PLASTICS
Thermoplastic Coating
TS Coating
FUNDAMENTALS OF RESIN FORMATION
Condensation Type
Addition Type
Fluorine—Containing Resin
Acrylic Resin
Ceiiulosic Resin
Copolymer Rcsin
Coumaronc—Indene Resin
Parylcnc
APPLICATION
Coil Coating
Strippable Coating
Germ—Free Coating
EVALUATION METHOD
PROCESS
Overview
Film Solidification
Coating Methods
Coating Equipment
Roll—Coat Finish
Spread Coating
Floating Knife Coater
Fluidized Bed Coating
Spray Coating
Powder Coating
Electrostatic Spraying
Coil Coating (Metal Coating)
PROPERTY
Corrosion and Chemical Resistance
Fire Retardant
Intumescent Coating
Heat Resistant
Thermal Control
Electrical Insulating
SIMULATED SERVICE TESTS
Abrasion Resistance
Adhesion
Accelerated Aging in Hot Air
Accelerated aging in oxygen
Blocking
Burst Strength
Compression Set
Curl
Elongation
Flame Resistance,Vertical
Flexibility
Hardness
Hydrostatic Resistance
Low Temperature Cracking
Modulus
Gas Permeability
Liquid Permeability
pH Value
Resiliency
Stretch
Swelling
Tear Strength
Tensile Strength
Thickness
Wicking
Weathering
SOLVENT AND COATING
Solvent Composition in Coating
Solvent and Solvent—Free Coatings
Emission
Clean Air Act
SOLVENT SUBSTITUTION
11.CASTING
INTRODUCTION
PLASTIC
PROCESSES
CASTING OF ACRYLIC
Introduction
Casting Sheet
Casting Rod and Tube
Embedment
Filled Casting
Prototype Casting
CASTING OF NYLON
Introduction
Process
SOLVENT CASTING OF FILM
12.REACTION INJECTION MOLDING
INTRODUCTION
EQUIPMENT
MOLD
Runner and Gatc Design
Cost
PROCESSING
Process Control
MATERIAL
Conversion Process
TP Polyurcthanc
TS Polyurcthanc
Cure of'TS
Polymerization
RRIM and Resin Transfer Molding
COSTING
13.ROTATIONAL MOLDING
INTRODUCTION
PROCESS
PLASTIC
PLASTIC BEHAVIOR
Effect of the Thermal Treatment
Effect of Pigmentation ancl Mixing Method
Conclusion
PERFORMANCE
MACHINES
MOLD
DESIGN
PRODUCTION AND COST
《塑料技术手册 涂层·浇注成型·反应注射成型·旋转成型(2 影印版)》:
Thixotropy is a property of a plastic that is a gel at rest but liquefies upon agitation.and loses viscosity under stress.Liquids containing suspended solids are likely to be thixotropic.They have both high static shcar strength and low dynamic shear strength.For example, these materials have the capability to bc applicd on a vertical wall and through quick curing action remain in position during curing.
All dispersion coatings must bc properly baked or fused in order to coalesce the tiny dispersed resin particles into a continuous, tough, and flexible film.Depending on formulation and dwell time, the required fusing tempcratures (based on actual metal temperatures) vary from 300°F to 525°F (149℃ to 275℃).The pref'crred cycle for sheet bakes is 10 minutes in the 350°F to 525°F (177℃ to 275℃) range.In moving—web application (coil or strip coating), a cure cycle of 60 seconds or less at about 525°F yields good results.These cited examples, of course, are for vinyl chloride dispersion systems.Fluorinated dispersion coatings require substantially higher temperatures (approximately 550°F to 600°F (288℃ to 316℃)) for proper film formation.
Since fusion of the dispersed particles is the major objective in the curing procedure, the baking cycle for a given application depends on how quickly the wet film reachcs fusing tempcraturc.When this critical temperature is reached, the tiny, partially solvated particles quickly coalesce into a homogeneous coating.Problems of thermal degradation will occur if the coating is subjectcd to tempcratures in excess of 500°F (260℃) for vinyl chloride dispersion; degradation will occur at tcmperatures in excess of 600°F (316℃) for vinyl or vinylidene fluoride dispersions for prolonged periods.
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